TWI563961B - An external fixator and its adjusting module thereof - Google Patents

Description

Extra-orbital fixator and its adjustment component

The present invention relates to an extra-orbital fixator, and more particularly to an extra-orbital fixator for use in bone grafting or bone lengthening. The invention further relates to an adjustment assembly for the bone external fixator.

For the treatment of patients with open fractures, after the treatment and debridement of the bone injury, some bone and soft tissue defects may occur in the bone injury, so the doctor will fix a conventional bone external fixator 9 At the bone lesion, the bone and soft tissue of the bone lesion are regenerated.

Referring to FIG. 1 , the conventional external bone fixator 9 includes a plurality of ring frames 91 which are respectively arranged at the opposite ends of the bone injury by a plurality of bone nails 92 (hereinafter Referred to as the broken bone B1〞 and the broken bone B2〞), a plurality of support rods 93 are arranged between the adjacent two ring frames 91, and the lengths of the plurality of support rods 93 can be adjusted, thereby adjusting the adjacent two The distance between the ring frames 91.

The doctor can adjust the length of the plurality of support rods 93 to enlarge the distance between the adjacent two ring frames 91, so that the distance between the broken bone B1 and the broken bone B2 is gradually opened, and the broken bone B1 can be broken. B2 gradually regenerates to form bone and soft tissue.

However, the conventional external fixator 9 is disposed on the broken bone B1 and the broken bone B2, and cannot directly cover the limb of the patient. The conventional external fixator 9 also has more complicated components, and the conventional use The extra-orbital fixator 9 is not only bulky but also has a heavy weight problem, and thus it is burdensome to the patient's daily life, which is inconvenient.

The present invention provides an extra-orbital fixator having a smaller volume and a lighter weight than the conventional bone external fixator described above to reduce the burden on the patient's daily life.

The invention further provides an adjusting component of the external fixator, which can be attached to the limb of the patient, and reduces the volume and weight of the adjusting component of the external fixator, thereby avoiding inconvenience to the daily life of the patient.

An external bone fixer comprising: a bone plate comprising a plurality of bone positioning holes; and an adjusting component having a sliding rail and a first positioning member disposed on the sliding rail, the adjusting component further comprising a bone coupling member, the bone coupling member is slidably disposed on the sliding rail, the first positioning member has a first joint portion, and the first joint portion is slidably disposed on the bone plate, the adjusting component The adjusting screw is further disposed on the first positioning member, wherein the bone plate further comprises a plurality of coupling holes, the first positioning member is provided with a first bone plate coupling hole, the first bone plate The pair of bonding holes is located at the first bonding portion, and the pair of first bone plate bonding holes is located at one of the plurality of bonding holes.

The bone external fixator of the present invention, wherein the adjusting screw has a connecting head and a shaft, and the bone engaging member is provided with a retaining hole facing the first positioning member, the adjusting screw The shaft extends into the anti-drop hole.

The bone external fixation device of the present invention, wherein the bone coupling member is further provided with a through hole, the through hole communicates with the anti-departure hole, and the shaft ring is provided with a detachment preventing groove, the anti-detachment groove is away from the head, the prevention The groove is aligned to the through hole.

In the external bone fixator of the present invention, the first bone plate coupling hole is a long hole.

The bone external fixator of the present invention, wherein the adjusting component further comprises a second positioning component, and the second positioning component is disposed on the sliding rail.

In the bone external fixator of the present invention, the second positioning member has a second joint portion, and the second joint portion is slidably disposed on the bone plate.

The bone external fixator of the present invention, wherein the bone plate further comprises a plurality of bonding holes, The second positioning member is provided with a second bone plate bonding hole, the second bone plate bonding hole pair is located at the second bonding portion, and the second bone plate bonding hole pair is located at one of the plurality of bonding holes.

In the external bone fixator of the present invention, the second bone plate coupling hole is a long hole.

In the bone external fixator of the present invention, the bone positioning hole is a figure eight hole.

The bone external fixator of the present invention, wherein the bone engaging member is provided with at least one bone engaging hole.

In the external bone fixator of the present invention, the at least one bone engaging hole is a figure eight hole.

In the bone external fixator of the present invention, the first joint portion is integrally formed on the first positioning member.

In the bone external fixator of the present invention, the first joint portion is slidably disposed on the first positioning member.

In the bone external fixator of the present invention, the second joint portion is slidably disposed on the second positioning member.

In the bone external fixator of the present invention, the second joint portion is slidably disposed on the second positioning member.

The bone external fixator of the present invention can reduce the burden on the daily life of the patient by attaching the bone plate and the adjusting component disposed on the limb of the patient with a small volume and a light weight.

The adjustment component of the bone external fixator of the present invention can be applied to the limb of the patient for use, thereby eliminating the inconvenience to the daily life of the patient.

〔this invention〕

1‧‧‧ bone plate

11‧‧‧ bone positioning hole

12‧‧‧Combination hole

2‧‧‧Adjusting components

21‧‧‧Slide rails

21a‧‧‧ first end

21b‧‧‧second end

22‧‧‧First positioning piece

221‧‧‧ first perforation

222‧‧‧ first joint

222’‧‧‧ First Joint Department

223‧‧‧First bone plate joint hole

224‧‧‧ screw holes

23‧‧‧Bone joints

231‧‧‧Second perforation

232‧‧‧Bone bonding hole

233‧‧‧Protection

234‧‧‧through hole

24‧‧‧Adjusting screw

241‧‧‧ head

242‧‧‧ shaft

2421‧‧‧Protection

25‧‧‧Second positioning parts

251‧‧‧ third perforation

252‧‧‧Second junction

252’‧‧‧Second junction

253‧‧‧Second bone plate joint hole

B1‧‧‧Bone bone

B2‧‧‧Bone bone

B3‧‧‧Broken bone

B1’‧‧‧ proximal bone

B2’‧‧‧ distal bone

D‧‧‧Protection prevention

N1‧‧‧ first bone nail

N2‧‧‧Second bone nail

S‧‧‧ screws

[study]

9‧‧‧

91‧‧‧ ring frame

92‧‧‧ bone nails

93‧‧‧Support rod

B1‧‧‧Bone bone

B2‧‧‧Bone bone

Fig. 1 is a schematic view showing the state of use of a conventional external fixator.

Fig. 2 is an exploded perspective view showing an embodiment of the bone external fixator of the present invention.

Figure 3 is a perspective exploded view of another embodiment of the adjustment assembly of the present invention.

Fig. 4 is a schematic view showing the combined state of the bone external fixator of the present invention applied to bone transport.

Fig. 5 is a schematic view showing the state of bonding of the external fixation device of the present invention applied to another perspective of bone transportation.

Fig. 6 is a schematic view showing the state of use of the bone external fixator of the present invention applied to bone transport.

Fig. 7 is a schematic view showing the combined state of the bone external fixator of the present invention applied to bone lengthening.

Fig. 8 is a schematic view showing the state of bonding of the external fixation device of the present invention applied to another perspective of bone elongation.

The above and other objects, features and advantages of the present invention will become more <RTIgt; When the defect area of the bone and soft tissue commonly used in the bone injury of the patient is large, the medical system can fix the opposite ends of the bone injury (hereinafter referred to as the B1〞, the broken bone B2〞, such as the 4th. (5), and obtain the bone of the broken bone B1 toward one end of the broken bone B2 (hereinafter referred to as the broken bone B3〞) as a bridge between the broken bone B1 and the broken bone B2, gradually making the broken bone B3 moves from the broken bone B1 toward the broken bone B2, so that the bone and soft tissue between the broken bone B1, the broken bone B3, and the broken bone B3 and the broken bone B2 can be regenerated. This is a general knowledge in the technical field to which the present invention pertains, and will not be described herein.

Referring to FIG. 2, an embodiment of the external fixator of the present invention comprises: a bone plate 1 and an adjustment component 2, wherein the bone plate 1 can be coupled to the opposite ends of the bone injury portion (ie, the above 〝Bone 〝B1〞 and 〝Bone BB2〞).

The bone plate 1 has two opposite side edges. The bone plate includes a plurality of bone positioning holes 11 and a plurality of coupling holes 12, and the plurality of first nails N1 are respectively disposed in the plurality of positioning holes 11 The bone plate 1 is simultaneously positioned at the opposite ends of the bone lesion (ie, the broken bone B1〞, the broken bone B2〞, as shown in FIGS. 4 and 5), and the plurality of bone positioning holes 11 The internal thread can be respectively provided, so that the plurality of first nails N1 can be screwed to the plurality of bone positioning holes 11 to make the first The nail N1 cannot be excessively drilled into the broken bone B1 and the broken bone B2. Moreover, the plurality of coupling holes 12 are respectively provided with a plurality of screws S locked therein, thereby securing the combination of the bone plate 1 and the adjusting component 2, and the plurality of coupling holes 12 can also be respectively provided. The internal thread prevents the plurality of screws S that are locked and threaded from being loosened due to an external force collision. In addition, the plurality of bone positioning holes 11 can be formed as a splayed hole, so that the doctor can adjust the relative position of the bone plate 1 and the broken bone B1 and the broken bone B2 to prevent the setting of the plurality of first bone nails N1. And the broken bone B1, the nerve bundle of the broken bone B2, the plurality of bonding holes 12 can also be a figure eight hole to finely adjust the relative position of the bone plate 1 and the adjusting component 2.

The adjusting component 2 has a sliding rail 21 having a first end 21a and a second end 22a. The sliding rail 21 is disposed along the direction of the long bone at the bone damage. Thereby, the bone and soft tissue of the bone damage can be grown in the direction of the long bone, as described below. The adjusting component 2 further includes a first positioning member 22, a bone coupling member 23 and an adjusting screw 24. The first positioning member 22 is disposed on the first end 21a of the sliding rail 21, and the bone coupling member 23 is The adjusting screw 24 is screwed to the first positioning member 22, so that the adjusting screw 24 can be rotated to the bone coupling member by rotating the adjusting screw 24. One end of the 23 can be moved toward the second end 21b to push the bone engaging member 23 coupled to the sliding rail 21 so that the bone engaging member 23 can move along the sliding rail 21 toward the first end 21a. In the embodiment, the slide rails 21 are two long rods, and the first positioning member 22 and the bone joint member 23 respectively have two first through holes 221 for the two long rods to be inserted (as shown in FIG. 3). And two second through holes 231 to improve the stability of movement of the bone coupling member 23 along the slide rail 21.

The first positioning member 22 has a first joint portion 222 , and the first joint portion 222 is slidably disposed on the bone plate 1 along opposite side edges of the bone plate 1 . The first joint portion 222 can be integrally formed on the first positioning member 22 (such as the first joint portion 222' shown in FIGS. 7 and 8), or in the embodiment, the first joint portion The 222 is slidably disposed on the first positioning member 22, and the relative position of the bone plate 1 and the adjustment assembly 2 can be adjusted. The first The positional member 22 further includes a first bone plate coupling hole 223. The first bone plate coupling hole 223 is located at the first joint portion 222, and may be located at one of the plurality of joint holes 12 for being worn on In the embodiment, the first bone plate coupling hole 223 can be a long hole, so that the first positioning member 22 can be adjusted according to different body types of each patient. The relative position of the bone plate 1.

In addition, the first positioning member 22 further includes a screw hole 224 for the adjusting screw 24 to be screwed on the screw hole 224, so that the doctor rotates the adjusting screw 24, the adjustment The screw 24 can push the bone engaging member 23 coupled to the slide rail 21 such that the bone engaging member 23 can move along the sliding rail 21 toward the second end 21b.

The bone engaging member 23 is further provided with at least one bone engaging hole 232, and at least one second nail N2 can be respectively disposed in the at least one bone engaging hole 232, thereby positioning the bone binding member 23 on the broken bone B3. The at least one osseointegration hole 232 can also be a splayed hole, so that the doctor can avoid damaging the nerve plexus of the broken bone B3 by positioning the at least one second bone nail N2.

The adjusting screw 24 has a connecting head 241 and a shaft 242 protruding from one end of the first positioning member 22, and the shaft 242 can have a right-handed thread to make the shaft The 242 is screwed to the screw hole 224, and the shaft 242 is not connected to one end of the head 241 to be coupled to the bone coupling member 23, according to which the doctor rotates the adjusting screw 24 clockwise. One end of the head 241 that is not connected to the 242 can be moved toward the second end 21b to force the bone coupling member 23 to move along the slide rail 21 toward the second end 21b. The shaft 242 can also have a left-handed thread and rotate the adjustment screw 24 counterclockwise to force the bone engaging member 23 to move toward the second end 21b.

The adjusting component 2 can further include a second positioning component 25, and the two positioning components 25 are also disposed on the sliding rail 21, for example, can be disposed on the sliding rail. The second end 21b of the second positioning member 22 is located between the first positioning member 22 and the second positioning member 25, and the sliding can be prevented by the setting of the second positioning member 25. The second end 21b of the rail 21 is exposed to the outside. As described above, in the embodiment, the slide rail 21 is a two-long rod, and the second positioning member 25 has a third through hole 251 through which the two long rods are passed.

The second positioning member 25 has a second joint portion 252. The second joint portion 252 is slidably disposed on the bone plate 1 along opposite side edges of the bone plate 1. The second joint portion 252 can be integrated. The second positioning member 25 (such as the second joint portion 252' shown in FIGS. 7 and 8) is formed or formed in the second positioning member 25 so as to be slidably disposed in the embodiment. The second positioning member 25 further includes a second bone plate coupling hole 253. The second bone plate coupling hole pair is located at the second joint portion 252, and may be located at one of the plurality of coupling holes 12 for wearing. The screw S is disposed in the coupling hole 12, and the second bone plate coupling hole 253 can be a long hole, so that the second positioning member 25 can be adjusted. The relative position of the bone plate 1.

Continuing to refer to FIG. 3, in another embodiment of the adjusting assembly 2 of the present invention, the bone engaging member 23 may further be provided with a retaining hole 233 and a through hole 234, and the retaining hole 233 is located in the bone coupling member. The through hole 234 is connected to the one end of the first positioning member 22, and the through hole 234 is connected to the anti-drop hole 233. At this time, the shaft 242 of the adjusting screw 24 can be provided with a retaining groove 2421 to extend the shaft 242. When the anti-drop hole 233 is prevented, the anti-drop groove 2421 can be located at the through hole 234, and can be positioned by using an anti-dropper member D, so that the adjusting screw 24 does not come out due to an external force to lift the adjusting screw. 24 and the bonding stability of the bone binding member 23. In the embodiment, the anti-drop groove 2421 is disposed on the ring groove of the shaft 242 away from one end of the head 241, so that the setting of the anti-drop member D does not affect the rotation of the adjusting screw 24. . In addition, the reverse rotation of the adjusting screw 24 (if the shaft 242 has a right-handed thread, the reverse rotation means rotating in a counterclockwise direction), the bone engaging member 23 is driven from the second end. 21b moves toward the first end 21a, so that the surgeon can be prevented from excessively rotating the adjusting screw 24, and the broken bone B3 is moved too far toward the second end 21b, thereby affecting the bone and soft tissue regeneration at the bone damage. effectiveness.

Please refer to Figures 4 and 5, the doctor can give priority to a number of first bone nails N1 Positioning the bone plate 1 on the broken bone B1 and the broken bone B2, and the first positioning member 22, the bone coupling member 23 and the second positioning member 25 are disposed on the sliding rail 21, the first positioning member 22 and the second positioning member 25 are respectively disposed on the first end 21a and the second end 21b of the sliding rail 21, and the bone coupling member 23 is slidably disposed on the first positioning member 22 and the second Between the positioning members 25, the adjusting screw 24 is screwed to the screw hole 224, so that one end of the shaft 242 not connected to the head portion 241 extends into the anti-drop hole 233, and the anti-drop member D is extended. The through hole 234 is located in the detachment preventing groove 2421 (not shown), so that the adjusting screw 24 is not released by an external force, and the second nail N2 is inserted through the bone engaging hole 232, and The combination is positioned on the broken bone B3 to complete the setting of the external fixator.

Referring to FIG. 6 , the doctor can rotate the adjusting screw 24 so that the shaft 242 is not connected to one end of the head 241 and moves from the first end 21 a toward the second end 21 b to make the bone. The coupling member 23 can be moved toward the second end 21b. For example, the bone coupling member 23 can be moved 1 mm toward the second end 21b every day, so that the bone between the broken bone B1 and the broken bone B2 can be made. The soft tissue is regenerated at an appropriate rate to complete the treatment of the bone lesion.

In addition, the external fixator can be applied to the bone extension surgery, that is, the patient is used for treating the long and short legs. The doctor cuts the long bone to form a proximal bone B1' which is closer to the patient's trunk, and is closer to the patient's torso. The distal distal bone B2' causes the distal bone B2' to gradually move away from the torso, and the bone and soft tissue between the proximal bone B1' and the distal bone B2' can also be regenerated.

In detail, referring to Figures 7 and 8, the bone plate 1 is positioned on the proximal bone B1', and the first positioning member 22 and the bone coupling member 23 are arranged and the above-mentioned "bone transport" Similarly, the second positioning member 25 can be selectively disposed between the first positioning member 22 and the bone coupling member 23, and the bone engaging member 23 is oriented toward the second end 21b by rotating the adjusting screw 24. The direction of movement causes the bone and soft tissue between the proximal bone B1' and the distal bone B2' to be regenerated to complete the extension of the long bone.

In summary, the bone external fixator of the present invention can reduce the burden on the daily life of the patient by attaching the bone plate and the adjusting component disposed on the limb of the patient with a small volume and a light weight. efficacy.

Furthermore, the adjustment component of the bone external fixator of the present invention can be applied to the limb of the patient for use, thereby eliminating the inconvenience to the patient's daily life.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧ bone plate

11‧‧‧ bone positioning hole

12‧‧‧Combination hole

2‧‧‧Adjusting components

21‧‧‧Slide rails

21a‧‧‧ first end

21b‧‧‧second end

22‧‧‧First positioning piece

222‧‧‧ first joint

223‧‧‧First bone plate joint hole

224‧‧‧ screw holes

23‧‧‧Bone joints

231‧‧‧Second perforation

232‧‧‧Bone bonding hole

24‧‧‧Adjusting screw

241‧‧‧ head

242‧‧‧ shaft

25‧‧‧Second positioning parts

251‧‧‧ third perforation

252‧‧‧Second junction

253‧‧‧Second bone plate joint hole

N1‧‧‧ first bone nail

N2‧‧‧Second bone nail

S‧‧‧ screws

Claims (15)

An external bone fixer comprising: a bone plate comprising a plurality of bone positioning holes; and an adjusting component having a sliding rail and a first positioning member disposed on the sliding rail, the adjusting component further comprising a bone coupling member, the bone coupling member is slidably disposed on the sliding rail, the first positioning member has a first joint portion, and the first joint portion is slidably disposed on the bone plate, the adjusting component Further comprising an adjusting screw, one end of the adjusting screw is screwed to the first positioning member, wherein the bone plate further comprises a plurality of coupling holes, the first positioning member is provided with a first bone plate coupling hole, the first bone The pair of plate bonding holes is located at the first bonding portion, and the pair of first bone plate bonding holes is located at one of the plurality of bonding holes. The bone external fixator according to claim 1, wherein the adjusting screw has a connecting head and a shaft, and the bone engaging member is provided with a retaining hole facing the first a positioning member, the shaft of the adjusting screw extends into the anti-drop hole. The bone external fixator according to claim 2, wherein the bone engaging member is further provided with a through hole, the through hole is connected to the anti-drop hole, and the shaft ring is provided with a detachment preventing groove. Away away from the head, the anti-drop groove aligns the through hole. The bone external fixator according to claim 1, wherein the first bone plate coupling hole is a long hole. The bone external fixator according to claim 1, wherein the adjusting component further comprises a second positioning component, and the second positioning component is disposed on the sliding rail. The bone external fixator according to claim 5, wherein the second positioning member has a second joint portion, and the second joint portion is slidably disposed on the bone plate. The bone external fixator according to claim 6, wherein the bone plate further comprises a plurality of joint holes, the second positioning member is provided with a second bone plate joint hole, and the second bone plate joint hole pair is located The second bonding portion, and the second bone plate bonding hole pair is located at one of the plurality of bonding holes. The bone external fixator according to claim 7, wherein the second bone plate coupling hole is a long hole. The bone external fixator according to claim 1, wherein the bone positioning hole is a figure eight hole. The bone external fixator according to claim 1, wherein the bone engaging member is provided with at least one bone engaging hole. The bone external fixator according to claim 10, wherein the at least one bone engaging hole is a figure eight hole. The bone external fixator according to claim 1, wherein the first joint is integrally formed on the first positioning member. The bone external fixator according to claim 1, wherein the first joint portion is slidably disposed on the first positioning member. The bone external fixator according to claim 6, wherein the second joint is integrally formed on the second positioning member. The bone external fixator of claim 6, wherein the second joint is slidably disposed on the second positioning member.