CN102657551B - Fixed connection of implant with stable angle - Google Patents

Abstract

The invention provides a system and a method for fixedly connecting an implant to a bone with a stable angle. The method comprises the following steps: manufacturing at least one hole in the bone by using a bone drill; placing the implant at the expected position of the bone; and connecting the implant with the bone so as to prevent the implant from being rotated around the attached point of the implant. In addition, the invention provides the system applied to the method. The system comprises the bone drill (40), the implant (20) and an ultrasonic welder (50) for fixedly connecting the implant to the bone (10) with a stable angle. The system also comprises a connecting component (60) for connecting the implant and the bone.

Description

The angle stabilization of implant is affixed

The divisional application that the application's to be the applying date be JIUYUE in 2007 18 days, application number are 200780100687.4, denomination of invention is the application for a patent for invention of " angle stabilization of implant is affixed ".

Technical field

The present invention relates to system and method implant being solidly connected to bone.The invention particularly relates to and implant angle stabilization is solidly connected to the system and method for bone.

Background technology

Usually the known bone by affixed fracture treats fracture.Each fragment of bone is aligned each other the part be separated can be grown together again.Must each several part be made over a period relative to each other to keep relative stability, to allow healing.Rigid plaster in the outside of the breaking portion of health by such as plaster bandage can be fixed by the fragment of fractured bone under many circumstances.The bone block of fracture is aligned each other and is kept in position by rigid plaster.In some cases, particularly for more complicated fracture, each bone block ruptured must be connected to each other directly.In these cases, by the program of operating on by fracture fixation or reduction, screw or nail is wherein utilized implant to be arranged in health.

But have been found that fixing bone parts does not always grow together as desired like that.In addition, the method for operating on of traditional fracture fixation is along with relatively serious damage and lose blood.In addition, the Periprosthetic fracture of---particularly joint implant---is needed implant to carry out affixed device.

Fixing head has been advised to be used in said method.First outside according to each fracture, plate is preshaped patient, then by nail or screw, plate is connected to bone or the bone fragments of fracture via operation.These plates have extra advantage: they can fix particularly less fragment and stable fracture.When more complicated fracture, this mode makes sclerite to be reliably connected each other or with multiple fragment.

But these fixing heads can not be fastening ideally.Especially when fracture relates to musculoskeletal system and sclerite is exposed to different shearings in motor process.Therefore, for the fracture needs relating to musculoskeletal system, there is the affixed implant of improvement.

Summary of the invention

The invention provides a kind of system comprising implantation plate, bone drill and the supersonic welder be made up of polymeric material.This system also comprises the pin be made up of polymeric material, and this pin is used for implantation plate to be connected with bone.This pin is optional from following group: pin, conical shaping pin, plug, upspring type hook plug (springing up hook plug), multiple tooth plug, screw, conical forming screw, ladder pin (graded pin), twice shaping pin (twice formed pin), triangle shaping pin or asymmetric shaping pin or have and thicken the pin of head.At polymer pin by when fusing together with implant, implant material should be the same with the material of polymer pin or at least similar.

According to illustrative embodiments, the invention provides a kind of system comprising plate, there is in this plate the opening of formation.This opening is asymmetrical.This system also comprises brill.Adopt this brill in order to form opening and the hole in the bone of adjoining plate.This system also comprises can pin in insertion opening.Also comprise supersonic welder within the system.This supersonic welder is suitable for applying energy to pin, so that fusing pin is at least partially, thus that pin is in bone attached and be attached on plate, thus the rotary motion of preventing board.

Another embodiment of the invention provides a kind of angle stabilization implant for fracturing affixed.This implant comprises the plate being suitable for being arranged on bone.Plate and bone have the first opening and the second opening respectively.This first opening and the second opening substantial alignment also have the shape of asymmetrical.Provide the pin being configured as and can inserting in the first opening and the second opening, and this pin received energy can be sold at least partially in order to fusing.The molten material of pin can solidify in the first opening and the second opening, to be welded on bone and plate by pin, thus forms the implant of the angle stabilization that cannot rotate relative to bone.

The present invention also comprises a kind of method substantially with following steps: make at least one hole in bone, and implant and bone angle stabilization are connected by the desired locations place on bone, and finally settle implant.According to illustrative embodiments, can drill jig be used in the process to set up at least one hole in bone, or also can use guiding device, implant angle stabilization can be fastened on bone by means of this guiding device.According to another illustrative embodiments, can set labelling, first this labelling is used for drill jig or model are aimed on bone, in order to prepare at least one hole in bone, then implant and labelling is aligned and therefore accurately places implant.According to another illustrative embodiments of the inventive method, to liquefy implant material by applying ultrasonic energy to material, thus implant material is flow at least one hole described and in addition the implant angle stabilization be placed on bone is fixed.By ultrasonic energy also liquefiable Connection Element, this Connection Element is set through implant entering at least one hole described be formed in bone, thus makes it reliably settle in bone on the one hand and place of portion and implant material are melted together in its back-end on the other hand.

According to another embodiment, the present invention also comprises a kind of affixed method of fracturing, and wherein, implant is placed on bone, and this implant has the first vertical axis of the end face perpendicular to implant.Get out the first hole and the second hole in bone, the first hole and the second hole form the first angle and the second angle respectively with vertical axis.The fusing at least partially of implant is shifted onto in the first hole and the second hole.The implant material of fusing is allowed to solidify in the first hole and the second hole, to obtain angle stabilization attached of implant for bone.

Affixed other method of fracturing teaches and to be placed on by plate on bone and to form at least one opening in plate and bone.This opening is asymmetrical.Pin is inserted in opening, and energy is applied in order to fusing pin at least partially to pin, thus pin to be attached in bone and to be attached on plate, thus the rotary motion of preventing board.

Affixed other method of fracturing teaches and is placed on bone by plate, and this plate has the vertical axis of the thickness extending through plate.In bone to form the first opening relative to the first angle of axis and to form the second opening with the second angle relative to vertical axis.Melt described plate by applying energy and the molten material of plate flow in the first opening and the second opening, so that the connection that angulation is stable between plate and bone when solidified.

The object of this invention is to provide system and method implantation plate being solidly connected to bone, wherein, implant plate and be connected in the mode of angle stabilization with bone.

This object is realized by the theme of each independent claims.Further illustrative embodiments is described in each dependent claims.

Accompanying drawing explanation

With reference to following accompanying drawing, the present invention is described by illustrative embodiments.

Fig. 1 schematically shows, according to the present invention first illustrative embodiments, implant angle stabilization is secured to method on bone in four frameworks.

Fig. 2 schematically shows the second illustrative embodiments according to method of the present invention.

Fig. 3 schematically shows the 3rd illustrative embodiments according to method of the present invention.

Fig. 4 schematically shows the 4th illustrative embodiments according to method of the present invention.

Fig. 5 schematically shows the 5th illustrative embodiments according to method of the present invention.

Fig. 6 schematically shows the 6th illustrative embodiments according to method of the present invention.

Fig. 7 schematically shows the 7th illustrative embodiments according to method of the present invention.

Fig. 8 schematically shows the 8th illustrative embodiments according to method of the present invention.

Fig. 9 schematically shows the 9th illustrative embodiments according to method of the present invention.

Figure 10 schematically shows the tenth illustrative embodiments according to method of the present invention.

Detailed description of the invention

Fig. 1 shows the implantation plate 20 be directly installed on cortical bone 10.Implant plate 20 to be made up of the material of such as medical grade plastic, such as, be made up of poly-lactic acid material (PLLA (poly (l-lactic acid)), PLDLA (L/DL-polylactic acid)).The material used can be absorbable.Each in Fig. 1-10 has four frameworks, it illustrates the step of method illustrated in each figure.Drill through by means of Kirschner wire 40 and implant plate 20 and bone 10, mutually intersect to make brill mouth 11 and 12.Bore mouth 11 and 12 should preferably intersect with the interface of bone 10 at implantation plate 20.Drill jig 30 or other guiding device be applicable to can be used to ensure that cross point is positioned at the interface of plate 20 and bone 10.Show as the framework 1 in Fig. 1, implant plate 20 and be placed on bone 10.Drill jig 30 is placed on plate 20.Drill jig 30 has two passages 31 and 32, makes Kirschner wire or alternately makes brill can be advanced in order to get out opening 11 and 12 by described passage.In addition, drill jig 30 has through hole 33, and it receives and guides supersonic welder.

First, Kirschner wire 40 reciprocates through the passage 31 of drill jig 30 to and fro, in order to be formed not only by implanting plate 20 but also by the first opening 11 of bone 10.Next, as shown in the framework 2 in Fig. 1, Kirschner wire 40 reciprocates through the second channel 32 of drill jig 30 to and fro, to form the second opening 12 in implantation plate 20 and bone 10.Two openings 11,12 are intersecting with the interface plane place between bone 10 at implantation plate 20.

As shown in the framework 3 in Fig. 1, drill jig 30 is positioned to be implanted on plate 20.Next, apply pressure F and vibration U by the supersonic welder 50 be directed in through hole 33, to make the implant material of implantation plate 20 melt in the region of boring mouth 11 and 12, and a part for material flows in these openings.As shown in framework 4, because material flows in opening 11 and 12, plate 20 is made to be fixed to bone 10.In the above described manner, the plate 20 being fixed to bone 10 is angle stabilization, that is, plate cannot rotate.The gradient of the passage 31,32 in drill jig 30 depends on the thickness implanting plate 20.Bone plate 20 is contained in bone 10 as the tooth root of jaw.The variant of the illustrative embodiments of the method can have four the boring/openings arranged with 90 degree each other instead of the boring that two reverse.The thickness of plate 20 on demand can be thicker or thinner.Like this, more polymer can flow in the opening 11 and 12 in bone 10.Its objective is, after the collision of pressure F and ultrasound wave vibration U has made the abundant fusing of plate 20, there is the enough plate thickness stayed.Like this, shear stress can be avoided under load afterwards.

Fig. 2 shows the second illustrative embodiments of the present invention.Herein, implant plate 20 to be connected in the mode of angle stabilization with bone 10.Framework 1 shows the drill jig 30 be placed on bone 10.Next, bone 10 arranges labelling 15.Then, as shown in the framework 2 in Fig. 2, by helicoid hydraulic motor 40, screwed hole 13 is inserted in bone 10.This helicoid hydraulic motor 40 is inserted by the opening 35 in drill jig 30 and directed, in order to form screwed hole 13 in bone 10.Then usage flag 15 is in order to be placed on implant 20 in desired locations together with drill jig 30.Next, supersonic welder 50 and the opening 35 in drill jig 30 are aligned, this opening 35 is for utilizing tap 40 to carry out manufacturing hole 13.Framework 3 in Fig. 2 shows the use of supersonic welder 50, in order to fusing (that is, liquefy) implant plate 20 material and in the screwed hole 13 that the material of fusing is flow in bone 10.Fusing is completed by applying pressure F via supersonic welder 50 pairs of implants 20 and vibrating U.The framework 4 of Fig. 2 shows the implant 20 utilizing illustrated method in Fig. 2 to be attached to bone 10.

Be different from the first illustrative embodiments, do not make openings/apertures penetrate and implant plate 20 itself, and therefore prevent the formation of crumb.Herein, only bone 10 is provided with screwed hole 13.Boring point and point attached by supersonic welder 50 are that the drill jig 30 by aligning with labelling 15 limits.Can repeat said process to form a more than hole, then implant material to flow in hole and hardening.Supersonic welder 50 is by ultrasound wave vibration U and power F produce power, and it is suitable for being liquefied by implant material in threaded openings 13 region.Due in supersonic welder 50 and the shallow depression 25 in implanting the implantation plate 20 of position that plate 20 contacts, therefore the position of screwed hole 13 is visible.By the material of each point of impingement place reinforcement plate 20 at supersonic welder, depression 25 can be avoided or at least can reduce expression.

Fig. 3 shows the 3rd illustrative embodiments illustrated according to method of the present invention.3rd embodiment uses preshaped implantation plate 20.Plate 20 has the geometry of the function of the polymer pin that also can complete other illustrative embodiments.The implantation plate 20 of the 3rd illustrative embodiments comprises projection 22, and the size of projection is fabricated to slip in the hole 13 in bone 10.The position of implanting the projection 22 in plate 20 needs very accurately and accordingly locating of the screwed hole 13 in bone 10.Such as, this controls by drill jig 30.

As shown in the framework 1 in Fig. 3, first, drill jig 30 is placed on bone 10.Next, tap 40 is utilized to form threaded openings 13 in bone 10.In the process forming opening 13, the hole 35 in drill jig 30 is used for guide vanes screw tap 40.Next, implantation plate 20 is placed on bone 10, projection 22 is projected in each boring 13 (that is, opening).Liquefied by implant material by supersonic welder 50 now, this supersonic welder 50 is formed with the leading section of the point be inserted in projection 22.As shown in the framework 2 and 3 in Fig. 3, cause implant material to melt like this and adapt with the screw thread that formed in the opening 13 in bone 10.In the 3rd illustrative embodiments, the preliminarily stabilised of fracture has come in the opening 13 by the projection 22 implanting plate 20 being inserted in bone 10.Projection 22 can be formed as the shape of the cone with central through hole 23, that is, through hole 23 can be formed through and implant plate 20 also longitudinally by projection 22.The end of supersonic welder 50 is applicable to this hole 23.The diameter of end is greater than the opening in plate 20, and is not only applied to vertically but also radially by pressure in threaded openings 13 in bone 10 and implants on plate, and material is reliably flow in the screw thread of the screwed hole in bone 10.The implant 20 of the 3rd embodiment represents highly stable system, because it only comprises single parts.

After this illustrative embodiments described uses extra Connection Element 60.This Connection Element 60 is used for connecting implants plate 20 and bone 10.4th illustrative embodiments of the present invention schematically shows in four frameworks of Fig. 4.Conical tap 40 shown in the framework 1 of Fig. 4, it manufactures conical threaded holes 13 also simultaneously by bone 10 in implantation plate 20.Next, in framework 2, illustrate and conical studs 60 is inserted in hole 13.The cone angle of conical studs 60 and the angle automatching of tap 40.Framework 3 in Fig. 4 shows the pin 60 liquefied by supersonic welder 50.The liquefied material of pin 60 fills up the cavity in threaded openings 13, and is melted together with the implant material implanting plate 20.The penetration depth of tap 40 depends on plate thickness and is correspondingly limited by stopping means 41.Threaded openings 13 is that the structure of bone 10 provides simple probability, and supports fusion process by generating the restriction position with high local energy density simultaneously.

Fig. 5 shows the continuous frame of the 5th illustrative embodiments of the present invention.Be similar to the 4th illustrative embodiments, herein, made by tap 40 hole (being alternately referred to as opening) 13 drill through simultaneously and implant plate 20 and bone 10.Screw 60 is screwed in this hole 13.Like this, implantation plate 20 is made preliminarily to be stabilized in bone 10.Implant is attached for the final angle stabilization of bone 10 is by power F and ultrasound wave vibration U being applied to screw 60 and obtaining by means of supersonic welder 50.Thus, the screw thread liquefaction of screw 60 and the material of liquefaction are molded as and adapt with the screw thread in the hole 13 in bone 10.In addition, head of screw 61 is melted together with the adjacently situated surfaces implanting plate 20.

Because make to insert the materials liquefy of screw 60 owing to applying ultrasound wave vibration U and power F, so can make smooth by the bar inserting screw in variant preferably, that is, the screw thread of threaded is optional.In addition, the processing of implanting plate 20 and bone 10 completes by drilling and tapping gang tool.Drilling depth is provided by boring stopping means 41.Anterior threaded section 43 produces screwed hole 13 in bone 10, and the boring part 42 subsequently of drilling and tapping gang tool produces smooth hole in implantation plate 20.The material fusing of polymer pin 60, and then hardening in screwed hole 13, which provide and implant good fix of plate 20 in bone 10.By stem knob 61 or head of screw 61 being welded together with implantation plate 20, the affixed of the angle stabilization of the implant in bone 10 can be guaranteed.

6th illustrative embodiments of the present invention shown in Figure 6.The method utilizing the 6th embodiment to implement is similar to the method according to the 5th illustrative embodiments.Difference is herein, forms through hole 14 in bone 10, and non-threaded holes 13.This through hole 14 drills through the cortical section implanting plate 20 and bone 10.The key benefit of this solution shows the simple program for preparing bone 10 and implantation plate 20.As shown in the framework 1 in Fig. 6, brill 40 is utilized to perform the simple program manufacturing smooth hole 14.Next, polymer pin 60 to be inserted in hole 14 and to be promoted by supersonic welder 50 by surgeon.The diameter of polymer pin 60 is a bit larger tham the diameter in the hole 14 in bone 10.Diameter difference is approximately 0.1 to 0.2mm ideally.

Via ultrasonic energy the melting pin 60 with the material of bone 10 contact position that supersonic welder 50 applies.The material of fusing is transmitted through the below of the cortical section of hole 14 and bone 10 by moving of pin 60.The material of fusing is again hardening at this place, and provides reinforcement 62 in the below of the cortical section of bone 10, obtains fixing reliably thus.Be conical due to the head 61 implanting opening in plate 20 and polymer pin 60 and formed and closely cooperate and weld together under the effect of ultrasonic energy, therefore polymer pin 60 also welds with the polymeric material implanting plate 20.

7th illustrative embodiments of the present invention has been shown in Fig. 7.In the 7th embodiment, plug 60 is used to replace polymer pin or the screw of earlier embodiments.As shown in the framework 1 in Fig. 7, hole 14 is formed in simultaneously implants in plate 20 and bone 10.Brill 40 is used to be used for forming hole 14.As shown in the framework 2 in Fig. 7, plug 60 is inserted in hole 14.First, the breech lock 63 formed at the front end place of plug 60 is pressed against on the bar 64 of plug.Once leading edge has been perforated through the cortical section of bone 10, breech lock 63 has extended from bar 64 and has been anchored on bone 10 by plug 60.

As the framework 3 in Fig. 7 illustrates, then by applying ultrasonic energy via supersonic welder 50 to plug 60 and the rearward end of plug 60 can being made to liquefy, and be welded to implant material thus.Therefore, plate 20 is connected together with the cortical section of bone 10.Be pushed during welding process to prevent polymer plug 60 and therefore in bone 10, become loosening, the rope (not shown) be incorporated in plug can be provided.Utilize this rope, during fusion process, plug 60 can be pulled to supersonic welder 50.Like this, plug 60 can be used, when making snap lock be latched in stretching, extension, be held against the cortical section of bone 10 at the leading edge place of plug 60.

Fig. 8 shows the 8th illustrative embodiments of the present invention.In the 8th illustrative embodiments, use plug 60 fixing for the implantation plate 20 on bone 10.In this case, fill in 60 and comprise tooth 65 on the surface of the bar part of this plug 60.The bar of plug 60 has longitudinal gap, and this gap allows bar to be radially pressed.Such permission promotes plug 60 passing hole 14, and the diameter in this hole 14 is less than the shank diameter of the plug 60 in non-compressed state.

Ideally, by conical bone drill 40 by hole drill to implantation plate 20 and bone 10 in.Bore the degree of depth of stopping means 41 limiting holes 14 at 40 places, and prevent hole 14 from being formed too dark in bone 10.By plug 60 is inserted in hole 14 dearly, implantation plate 20 is anchored in bone 10.Tooth 65 near the head being positioned at plug 60 plays the effect with the hook of the inner abutment of bone 10.On the other hand, the tooth formed along bar blocks in bone in boring 14.By supersonic welder 50, plug 60 is welded with implantation plate 20.The coniform shape in hole 14 allows plug to be anchored in hole 14.The suitable accurate geometry of tooth 65 or for fill in 60 lamellas be fixed can reduce when supersonic welder 50 to be shifted onto on plug 60 in case will plug with implant the motion that may cause when plate 20 welds together.

Fig. 9 schematically shows the 9th illustrative embodiments of the present invention.One of this embodiment is characterised in that and is formed in tri-angle-holed 16 in bone 10.Implant in plate 20 formed not there is rotational symmetry and be greater than tri-angle-holed 16 hole.Alternately, the non-rotationally-symmetrical forming other shape any in plate 20 and bone 10 can implanted.Non-rotationally-symmetrical (or alternately asymmetrical hole) refers to following hole, that is: make due to the shape in pin and hole and matching size the hole that the pin of complementary shape cannot rotate wherein.The example in asymmetrical hole is slotted hole or tri-angle-holed.Coupling pin is respectively oblong or leg-of-mutton and its its size is fabricated to fit closely in hole.As shown in the framework 1 in Fig. 9, this hole such as by boring 40 formation, this brill 40 grinding or centrifugal swing on side.Can use those skilled in the art can other known method carry out manufacturing hole.Then polymer pin 60 is introduced and have in the hole 16 of the cross section similar with the cross section in hole 16.Polymer pin 60 has the screwed hole 66 extended longitudinally in the core of pin 60.The end of the suitable shaping of supersonic welder 50 is connected to screwed hole 66.Polymer pin 60 is fully screwed on the end of supersonic welder, makes it screw further again.

In addition, the length of pin 60 makes pin 60 be projected into exceed in the bone 10 of cortical bone layer.In this position, apply moment of torsion M together with the ultrasound wave vibration U from supersonic welder 50, and the assembly of supersonic welder and polymer pin rotates about 60 degree.Herein, can expect making supersonic welder and creep into row instrument to combine.

Finally, pin 60 is by the region that is melted in the cortical bone layer of bone 10.But polymer pin runs into less rotary resistance in extending beyond in the region of bone 10 cortical layer of two ends of pin 60.Leading edge due to pin 60 is in the softer part of the contiguous cortical bone layer of bone, and the rotation of the assembly of supersonic welder 50 and pin 60 causes the pin part generation dislocation being arranged in softer bone, and as shown in the framework 3 of Fig. 9.Similarly, also there is dislocation relative to the part of contiguous bone 10 cortical section of pin 60 in the part being arranged in the pin 60 implanting plate 20.Like this, polymer pin 60 is from the below of cortical bone layer and the top locking in implantation plate 20.Therefore, anti-shotpin 60 is pulled out by from bone 10.The extra locking of polymer pin 60 is obtained by being melted together with the material implanting plate 20 by pin 60.Therefore, the connection of implantation plate 20 for the angle stabilization of bone 10 is obtained.

The framework 1 of Fig. 9 illustrates method step, and wherein, hole 16 is formed in implants in plate 20 and bone 10.Details A shows the cross section in hole 16.In the framework 2 of Fig. 9, polymer pin 60 is shown, this polymer pin 60 has been screwed onto stopping means on the end of supersonic welder always and puts it in hole 16.Details B shows the cross-sectional view in hole 16, and wherein polymer pin 60 is inserted in hole.The framework 3 of Fig. 9 is shown in the situation being applied the polymer pin 60 after moment of torsion M by supersonic welder 50.Implanting the distortion of end regions relative to central area can seeing the main body of pin 60 in plate 20 and the region below the cortical section of bone 10.Details C shows the upward view of the leading section of polymer pin 60, and this leading section reverses 60 degree relative to hole 16.The framework 4 of Fig. 9 finally show and the polymer pin 60 being in its final position implanted plate 20 and weld together.

Figure 10 shows the tenth illustrative embodiments of the present invention.Compared with above-mentioned embodiment, the opening 13 of the tenth embodiment is formed in pairs.Figure 10 shows the equipment 40 with two parallel brills, and these two parallel drilled through the one-level gear drive of the drive connection with 1: 1 and reverse sync.Use the opening 13 boring and be used for making by implanting plate 20 and bone 10 simultaneously.Brill is inserted in bone 10, implants plate 20 until stopping means 41 contacts and prevent brill to be advanced further.Can to opening 13 machining screw.Next, be inserted into by pin 60 in opening 13, pin 60 has by the coupling cylindrical arms 67 in bridge portion 68.The size of arm 67 is fabricated to be inserted in opening 13.Next, supersonic welder 50 is made to contact with polymer pin 60.

As shown in the framework 3 of Figure 10, supersonic welder 50 pairs of polymer pins 60 apply power F and ultrasound wave vibration U.The material of frame 60 melts by ultrasonic energy, and molten material flows in the screwed hole 13 that is formed in bone 10.Pin also melts at pin 60 and the interface of implanting plate 10.Pin 60 is melted together to make to be formed in bone 10 with implantation plate 20 has dual fixing stabilisation systems.In order to promote fusion process, bridge portion 68 provides sharp shaped material 69.This sharp shaped material produces the region of high-energy-density, and promotes fusing thus.

Allow fracture stabilization according to method and system of the present invention, wherein implantation plate is arranged on bone.Implanting plate is angle stabilization, that is, plate is attached thus plate cannot be rotated around attachment point.Utilize the fracture stabilization of system and method for the present invention can be combined with the use of less invasive techniques to carry out.Affixed by implanting the angle stabilization of plate on bone, relatively little operation wound and relative less losing blood and reliably fixing in osteoporotic bone can be realized.Although can encounter disadvantageous condition when complicated fracture, their retentivity of implant maintenance, until the fractures in osteoporosis bone completes.Connecting at implant, firmly angle stabilization between Connection Element and bone causes the quite high initial stage to be stablized and lower loosening rate.

It should be pointed out that the various aspects of the system and method for the present invention described in the context of an embodiment also can be combined with other embodiment clearly do not mentioned at system and method.Depend on the position of fracture and implant the size of plate, bone can be provided with one, two, three or more holes.In order to prepare hole on bone, utilizing labelling to control the location of implantation plate and/or implanting on plate or on bone, directly using drill jig can be attached to principle in each described illustrative embodiments.In addition, the variant free optional (with imagining) in each mentioned illustrative embodiments of the form (or shape) of the variant implanting the form (or shape) of the boring in plate and bone and the polymer pin implanting plate self or collaborative work with it.Bore hole (or hole or opening or boring) and the form (or shape) therefore also having polymer pin can be conical, stair-stepping, straight, screw thread or smooth or their any combination.The implantation plate of each embodiment and the material of pin can be absorbable.In addition, material can be selected from poly-lactic acid material race, such as, be selected from PLLA or PLDLA.

Hereinafter, illustrative embodiments of the present invention is described.

According to first embodiment of the invention for implant angle stabilization is solidly connected to the system of bone, it comprises: for preparing the instrument at least one hole in bone; Supersonic welder; For described instrument to prepare at least one hole described and/or the drill jig for supersonic welder in desired locations; And implant, it has can by the fluidised material of supersonic welder, in order to make implant affixed on bone place angle stabilization ground.

Optional from following group according to the instrument of the system of the first embodiment, this group comprises: bone drill, conical bone drill, screw thread bone drill, taper thread bone drill, two bone drill, stepped bone drill, the bone drill with triangular cross section, the bone drill with asymmetrical cross-section and Kirschner wire.

Also can comprise according to the system of the first embodiment the Connection Element connecting described implant and cortex, wherein, Connection Element comprises can by the fluidised material of supersonic welder.In addition, this Connection Element is optional from following group, and this group comprises: pin, conical studs, pin, buckle pin, multiple tooth pin, screw, conical screw, double-pin, stepped pin, triangle pin, asymmetric pin and have and thicken the pin of head.In addition, the material of Connection Element is optional from poly (l-lactic acid) material or L/DL-poly-lactic acid material.

Utilize according to the system of the first embodiment for the first method by being solidly connected to bone with implanting plate angle stabilization, it comprises the steps: to prepare at least one hole in bone; Utilize drill jig in order to prepare at least one hole described in bone; Implantation plate is placed in the desired locations place of bone; And plate and bone angle stabilization ground will be implanted be connected.

First method also can comprise following step: utilize described drill jig to guide for by the equipment that is connected of described implantation plate and described bone angle stabilization ground, wherein, for by described implantation plate and described bone angle stabilization the equipment that is connected can be supersonic welder.

First method also can comprise the steps: that setting labelling is in order to limit the desired locations of described implantation plate at described bone place.

First method also can comprise the steps: described implantation panel material fluidisation, thus at least one hole described that described implantation panel material is flow in described bone, to be connected with described bone by described implantation plate, wherein, implant material is by supersonic welder fluidisation.

First method also can comprise the steps: Connection Element to be inserted by described implantation plate and at least one hole described in being inserted in described bone, in order to described implantation plate is connected with described bone, wherein, implant plate and Connection Element fusible to together with, wherein implant plate and Connection Element is melted together by supersonic welder.

While first method also can comprise the steps: to prepare at least one through hole in described implantation plate, in described bone, prepare at least one hole described.

Utilize second method affixed according to the fracture of the system of first embodiment of the invention, it comprises following step: implant be placed on bone, and described implant has the first vertical axis of the end face perpendicular to described implant; Get out the first hole and the second hole in bone, this first hole and the second hole form the first angle and the second angle respectively with vertical axis; Dissolve implant at least partially; The implant material dissolved is shifted onto in the first hole and the second hole; And allow the implant material dissolved to solidify in the first hole and the second hole, to obtain angle stabilization attached of implant for bone, wherein, described fusing is that the energy by applying to be selected from following group completes, this group comprises: ultrasonic energy and heat energy, wherein, described promotion is by realizing by applying the power that the utensil of described energy executes.

Utilize the third method affixed according to the fracture of the system of first embodiment of the invention, it comprises following step: be placed on by plate on bone; Form threaded openings in bone; By applying energy melting plate and making the molten material of plate flow in the first opening and the second opening, so that the connection that angulation is stable between described plate and described bone when solidified, wherein, described opening is by utilizing the brill being selected from following group to be formed, this group comprises: screw thread bone drill, taper thread bone drill and stepped bone drill, wherein, described fusing is that the energy by applying to be selected from following group has come, this group comprises: ultrasonic energy and heat energy, and wherein, described flowing is by realizing by applying the power that the utensil of described energy executes.

According to second embodiment of the invention for affixed system of fracturing, it comprises: plate, and this plate has opening, and this opening is suitable for aligning with the hole in bone, and this opening is asymmetrical; Bore, this brill is suitable for forming opening and the hole in the bone of adjoining plate; Drill jig, this drill jig is suitable for guiding described brill; The pin in opening and hole can be inserted into; And supersonic welder, this supersonic welder is suitable for applying energy to described pin, to melt described pin at least partially, to be attached to by described pin thus in described bone and to be attached to described plate, thus preventing the rotary motion of described plate.

Can have the bore hole along its longitudinal axis according to the pin of the system of the second embodiment, wherein, described bore hole is attacked screw thread and is suitable for holding the screwed end of described supersonic welder.Pin can have head and main body, wherein, main body be conical at least partially and at least Part II of main body is columniform.Pin can have head and main body, wherein, main body at least partially there is projection.In the main body of pin, gap can be formed.

Utilize the method affixed according to the fracture of the system of second embodiment of the invention, it comprises the steps: plate to be placed on bone; Drill jig is placed and forms opening in order to drill guide onboard; Make a mark described drill jig is located over the plates to described bone; In plate and bone, form at least one opening, this opening is asymmetrical; Pin is inserted in opening; And energy is applied in order to melt described pin at least partially to described pin, thus described pin to be attached in described bone and to be attached to described plate, to prevent the rotary motion of described plate.

Described opening utilizes the brill being selected from following group to be formed, and this group comprises: bone drill, conical bone drill, screw thread bone drill, taper thread bone drill, two bone drill, stepped bone drill, the bone drill with triangular cross section, the bone drill with asymmetrical cross-section and Kirschner wire.

Energy can apply with the form of ultrasonic energy or heat energy.

Described pin is optional from following group, and this group comprises: conical studs, pin, buckle pin, band alligator nail, screw, conical screw, double-pin, stepped pin, triangle pin, asymmetric pin and have the pin of thickening head.

In addition, the shape of described pin and described opening can be complementary, and wherein, the size of described pin is fabricated to and fits closely in described opening.

According to the angle stabilization implant for fracturing affixed of third embodiment of the invention, it comprises: be suitable for the plate be arranged on bone, this plate and bone have the first opening and the second opening respectively, and this first opening and the second opening substantial alignment also have asymmetrical shape; And pin, this pin is configured as to be inserted in the first opening and the second opening, and can received energy sell at least partially in order to fusing, wherein, the molten material of pin can solidify in the first opening and the second opening, in order to be welded on bone and plate by pin, thus form the implant of the angle stabilization that cannot rotate relative to described bone.

According to first, second, and third embodiment of the present invention, implant or plate and Connection Element or pin can be made up of the material being selected from poly (l-lactic acid) or L/DL-polylactic acid respectively.

Although describe the present invention with reference to particular embodiment herein, it should be pointed out that these embodiments are only illustrating principle of the present invention and application.Thus it should be pointed out that and can make multiple remodeling to illustrational embodiment, and can expect that when not departing from the spirit and scope of the present invention limited by claims other is arranged.

Claims (18)

1., for an affixed system of fracturing, it comprises:

Plate, described plate has opening;

Screw thread bone drill, described brill is suitable for forming screwed hole in the bone of contiguous described plate, and the described opening in described plate and the described hole in described bone are aligned; And

Pin, described pin can be inserted in described opening and described hole; Wherein

Described pin and described plate can liquefy, what make described pin is attached to described plate by described pin thus with being melted together at least partially of described plate at least partially, and make the material of the liquefaction of described pin engage described screwed hole in described bone, to prevent the rotary motion of described plate.

2. the system as claimed in claim 1, it also comprises:

Drill jig, described drill jig is suitable for guiding described brill.

3. system as claimed in claim 1 or 2, wherein, described pin is selected from following group, and this group comprises: conical studs, pin, screw, double-pin, stepped pin, triangle pin, asymmetric pin and have the pin thickening head.

4. system as claimed in claim 1 or 2, wherein, the shape in described pin and described hole is complementary, and the size of described pin is fabricated to and fits closely in described hole.

5. the system as claimed in claim 1, wherein, described screw thread bone drill is taper thread bone drill.

6. system as claimed in claim 1 or 2, it also comprises supersonic welder, and described supersonic welder is suitable for applying energy to described pin and described plate.

7. system as claimed in claim 6, wherein, described brill and described supersonic welder are combined in single handheld device.

8. system as claimed in claim 1 or 2, wherein, described plate is made up of the material being selected from poly (l-lactic acid) or L/DL-polylactic acid.

9. system as claimed in claim 1 or 2, wherein, described pin is made up of the material being selected from poly (l-lactic acid) or L/DL-polylactic acid.

10. the system as claimed in claim 1, wherein, described pin has the bore hole along its longitudinal axis.

11. systems as claimed in claim 10, wherein, described bore hole is attacked screw thread and is suitable for holding the screwed end of supersonic welder.

12. systems as described in claim 1 or 11, wherein, described pin has head and main body, and described main body be at least Part II of conical and described main body is at least partially columniform.

13. systems as described in claim 1 or 11, wherein, described pin has head and main body, and described main body has projection at least partially.

14. systems as claimed in claim 12, wherein, form gap in the main body of described pin.

15. systems as claimed in claim 1 or 2, wherein, the size of described pin is fabricated to and fits closely in described opening.

16. systems as claimed in claim 3, wherein, described pin is buckle pin or band alligator nail.

17. systems as claimed in claim 3, wherein, described screw is conical screw.

18. systems as claimed in claim 13, wherein, form gap in the main body of described pin.