TWI394553B - External fixation for orthopedics - Google Patents

Description

Orthopedic external fixation device

The present invention relates to an external fixation device for orthopedics, which transmits a bone nail through a device portion of the adjusting member and a first clamping member provided on the column portion through a rotation stroke of an adjusting member and a changing fixing direction. The second clamping member is implanted in a proper position to fix the fracture to fix the fracture, so as to solve the disadvantages of the conventional technique that the replacement of a long needle seat and a short needle seat is inconvenient.

According to the current human skeleton, it is easy to cause fractures when there is an accident. Traditionally, the fixed bones of the fractured bones are mostly fixed by the plaster model. After the plaster model is hardened, the injured area is fixed. Or use the splint to clamp the fracture, and then use the bandage to wrap and fix, but in this way, the fracture is completely covered and fixed, which is thick and airtight, and the fracture is prone to sultry heat, and the action is also inconvenient.

In addition, some special symptom fractures need to be fixed by special medical treatment, and the above-mentioned fixation method is not suitable for the fracture of these special symptoms. Therefore, it is necessary to fix the fractures of these special symptoms with an auxiliary device. Fracture recovery with special symptoms can be faster.

However, at present, the external fixation frame for bone 1 is referred to in the first figure, which is a Republic of China Patent Publication No. 200843690, which is composed of a long needle seat 10, a short needle seat 11 and a joint group 12, The ball end 1201 of the ball screw 120 in the connecting group 12 is movably placed in a receiving space of a fixed cap 121 and a concave end of the short needle seat 11 along a long axis. The fixing direction of the external bone fixing frame 1 can be adjusted according to the requirements, and the plurality of bone nails are inserted into the first fixing hole 100 and the second fixing hole 111 respectively provided by the long needle holder 10 and the short needle holder 11 respectively. The bone nail fixes the bone of the special symptom fracture, so that the injured bone can accelerate the recovery, but the conventional external fixation frame 1 has the following disadvantages:

First, the conventional external fixation frame for bone 1 needs to adjust its fixation direction according to the wound condition of the fracture, and the fixation method only provides horizontal fixation or vertical fixation. If the fracture of the fracture is healed better or the fracture is fixed more firmly, The angle and position that the nail can be adjusted are limited, and the bone nail can not be adjusted and implanted in the optimal position of the human bone to fix the fracture, so that the bone scar can be better in healing.

2. If the fracture site needs to be fixed in three dimensions or other fixation methods, the external bone fixation bracket 1 should be disassembled to replace the long needle seat 10 or the short needle seat 11 which can provide three-dimensional fixation and other fixation methods, and then reassemble. It is quite inconvenient for medical personnel to review the use of the external fixation frame for bone 1 and to disassemble and assemble the different long needle holder 10 or short needle holder 11.

It can be seen that the long needle seat 10 or the short needle seat 11 of the conventional external fixation frame 1 cannot directly provide a three-dimensional fixation manner and other fixation methods. When the fracture site is to be fixed by three-dimensional fixation and other fixation methods, the medical personnel need to pass through. Disassemble and assemble and replace different long needle holders 10 or short needle holders 11 to provide three-dimensional fixation and other fixation methods, as well as the adjustment angle and position of the nails at the fracture points. Therefore, how to directly provide three-dimensional fixation, Other fixed methods and the angle and position of the nail fixation can be used to enter the optimal position of the external fixation device for orthopedics, which is the subject of the patent application of the present invention, to meet the needs of reality.

In view of the above-mentioned conventional external fixation for bone, there are still many defects; therefore, the inventors have finally developed and designed an "outer fixation device for orthopedics" of the present invention after long-term efforts and experiments.

An object of the present invention is to provide an external fixation device for orthopedics, in which a clamp body is sandwiched between a rod body and an adjustment member, and the clamp member is changed at different angles on the rod body to allow the adjustment member to provide a proper fixing direction. In order to achieve the purpose of easy operation.

Another object of the present invention is to provide an external fixation device for orthopedics, wherein a clamp body is provided with a rod body and an adjusting member, and the adjusting member is pivotally mounted on the clamp group, and has a rotation stroke, and Change the horizontal or vertical direction so that the adjustment piece does not need to be replaced.

Another object of the present invention is to provide an external fixation device for orthopedics, which comprises a rod body and an adjusting member, and a fixing device is provided on the device portion and the column portion to provide a different fixing of the bone nail. The way to the proper position of the implant bone is to achieve a firm fixation.

In order to facilitate the review committee to have a further understanding and understanding of the technical means and operation process of the present invention, the embodiments are combined with the drawings, and the details are as follows.

Please refer to the second, third (A), third (B), four (A) and four (B) drawings respectively, which are respectively an exploded schematic view and a combined schematic diagram of the external fixation device 2 for orthopedics according to the present invention. It can be seen that the orthopedic external fixation device 2 is composed of a rod body 21, at least one clamp group 22 and at least one adjustment member 23.

The clamp group 22 is divided into an upper clamp member 221 and a lower clamp member 222. A central portion is provided with a first recess 223 for clamping the rod body 21, and one end of the clamp assembly 22 is provided with a first lock. The second hole 225 is formed in the second hole 226, and the second groove 226 is corresponding to the second groove 226. One of the two locking holes 225 is provided with a first pivoting portion 227; when the upper clamping member 221 and the lower clamping member 222 are combined, the second recess 226 is a U-shaped groove.

The adjusting member 23 is pivotally disposed on the clamp unit 22 and has a rotation stroke. The adjusting member 23 is formed by a device portion 231 and a column portion 232. The device portion 231 is provided with at least one first portion. a sliding groove 2311, and at least one first holding member 2312 is disposed on the first sliding groove 2311; the cylindrical portion 232 is disposed at an intersection with the device portion 231, and a third locking portion is disposed around each of the four sides of the front end portion a second pivoting portion 2322 is disposed on the outer periphery of the third locking hole 2321, and the third locking portion 2321 and the second pivoting portion 2322 are available for the at least one The adjusting member 23 is pivotally disposed at the first pivoting portion 227 of the second recess 226 of the clamp unit 22, and a second sliding slot 2323 is respectively disposed around the four sides of the middle portion of the cylindrical portion 232. The slot 2323 can be respectively provided with at least one second clamping member 2324, and a through hole 2325 is formed in an axial direction of the front end portion of the cylindrical portion 232, and the through hole 2325 is interconnected with the second sliding slot 2323; A pivoting portion 227 is in contact with the second pivoting portion 2322 to increase the frictional force.

In the present invention, the orthopedic external fixation device 2 further includes at least one displacement member 25, which can be sleeved on the rod body 21, so that the clamp group 22 is sandwiched between the displacement members 25 to change different angles, and the displacement The piece 25 has a displacement stroke.

In the present invention, one end of the first clamping member 2312 and the second clamping member 2324 are respectively provided to stop the first clamping member 2312 and the second clamping member 2324 from the first sliding slot. 2311 and the limiting end 23121, 23241 of the second sliding slot 2323, and a limiting hole 23122, 23242 is provided at the limiting end 23121, 23241; the limiting hole 23122, 23242 is for at least one bone nail 26 ( Inserted as shown in Figure 5 to be implanted in the bones of the human body.

In the present invention, the other ends of the first clamping member 2312 and the second clamping member 2324 are respectively provided with a threaded portion 23123, 23243, and a screw cap 23124, 23244 is provided corresponding to the threaded portion 23123, 23243.

In the present invention, the first sliding groove 2311 and the second sliding groove 2322 and the nut 23124, 23234 further include a locking washer 23125, 23245.

In the present invention, the orthopaedic external fixation device 2 further includes a plurality of locking members 24 for locking the first locking hole 224 and the second locking hole 225 to fix the clamping group 22 It is locked to the rod body 21.

Please refer to the fifth to seventh embodiments, which are respectively schematic views of an embodiment of the external fixation device 2 for orthopedics according to the present invention. As can be seen from the respective figures, the above-mentioned members are assembled into the external fixation device 2 for the orthopedics, and the clamp group 22 is The lock fastener 24 is locked to the first locking hole 224 (as shown in the second figure), the second locking hole 225, and the third locking hole 2321, so that the clamp group 22 sandwiches the rod body. 21 and clamping the adjusting member 23, the first groove 223 of the clamp group 22 is correspondingly contacted with the outer annular surface of the rod body 21, so that the clamp group 22 can be moved according to the structure of the outer annular surface. Adjust different angles.

Furthermore, the orthopedic external fixation device 2 can also be provided with an O-ring displacement member 25 (as shown in the second figure) on the rod body 21, so that the clamp group 22 is placed on the displacement member 25, The first groove 223 of the clamp group 22 corresponds to the outer spherical surface of the rod body 21, so that the clamp group 22 can adjust different angles according to the outer spherical surface.

The adjustment member 23 can be adjusted according to the position of the fracture injury, and the medical staff adjusts the direction of the adjustment member 23 according to the condition of the fracture, so that the adjustment member 23 and the rod body 21 can be horizontally oriented (such as the third A). After the figure or the vertical direction (as shown in FIG. 4A), a bone nail 26 (as shown in FIGS. 5 to 7) is used by the first clamping member 2312 (as shown in the second figure). And the limiting hole 23122, 23242 of the second clamping member 2324 is implanted into the human bone to fix the fracture, and the first clamping member 2312 and the second clamping member 2324 can be oriented according to the fracture. The adjustment enables the bone nail 26 to be fixed in a suitable manner (for example, a horizontal fixation method, a vertical fixation method, a three-dimensional fixation method, etc.), so that the fracture portion can heal better.

The second locking hole 225 is locked to the second locking hole 225 and the third locking hole 2321 (as shown in the second figure), so that the second groove 226 of the clamping set 22 is sandwiched by the adjusting member 23 a front end portion, the first pivoting portion 227 and the second pivoting portion 2322 are pivotally connected to each other, thereby having a rotation stroke (as shown in FIG. 3B and FIG. 4B) to rotate the different directions. The adjusting member 234 can adjust the direction of the fracture to be fixed, and the bone nail 26 is implanted into the proper position of the human bone to provide a firm fixation to fix the fracture.

Furthermore, the medical staff can add another set of the clamp group 22, the adjusting member 23 or a set of the clamp group 22, the adjusting member 23 and the displacement member 25 to the rod body 21 according to the injury situation at the fracture. To fix multiple fractures.

Therefore, the design of the present invention is such that the same adjustment member 23 can be used for the external fixation device 2 for orthopedics, and different fixing directions are changed, so that the bone nails 26 are fixed by different means of the members of the adjustment member 23, It is implanted in the proper position of the human skeleton to stabilize the fracture, so that it is not necessary to replace the different adjustment members 23, the operation is simple and stable, and the shortcomings of the conventional technology are solved at the same time.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

1. . . Conventional bone external fixation

10. . . Long needle seat

100. . . First fixing hole

11. . . Short needle seat

110. . . Round hole

111. . . Second fixing hole

12. . . Link group

120. . . Ball screw

1201. . . Ball end

121. . . Fixed cap

2. . . Orthopedic external fixation device

twenty one. . . Rod body

twenty two. . . Fixture set

221. . . Upper clamp

222. . . Lower clamp

223. . . First groove

224. . . First locking hole

225. . . Second locking hole

226. . . Second groove

227. . . First pivot

twenty three. . . Adjustment piece

231. . . Device department

2311. . . First sliding slot

2312. . . First clamping member

23121. . . Limit end

23122. . . Limit hole

23123. . . Thread part

23124. . . Nut

23125. . . washer

232. . . Column

2321. . . Third locking hole

2322. . . Second pivot

2323. . . Second sliding slot

2324. . . Second clamping member

23241. . . Limit end

23242. . . Limit hole

23243. . . Thread part

23244. . . Nut

23245. . . washer

2325. . . Through hole

twenty four. . . Lock firmware

25. . . Displacement member

26. . . Bone nail

The first figure is an exploded perspective view of a conventional external fixation frame for bone;

The second figure is an exploded perspective view of the external fixation device for orthopedics of the present invention;

The third A is a schematic perspective view of the combination of the external fixation device for orthopedics of the present invention;

The third B is a schematic diagram of the rotation stroke of one of the external fixation devices for orthopedics of the present invention;

Figure 4A is a perspective view showing another combination of the external fixation device for orthopedics of the present invention;

Figure 4B is a schematic view showing another rotation stroke of the external fixation device for orthopedics of the present invention;

Figure 5 is a schematic view showing a first embodiment of the external fixation device for orthopedics of the present invention;

Figure 6 is a schematic view showing a second embodiment of the external fixation device for orthopedics of the present invention;

Figure 7 is a schematic view showing a third embodiment of the external fixation device for orthopedics of the present invention.

2. . . Orthopedic external fixation device

twenty one. . . Rod body

twenty two. . . Fixture set

221. . . Upper clamp

222. . . Lower clamp

223. . . First groove

224. . . First locking hole

225. . . Second locking hole

226. . . Second groove

227. . . First pivot

twenty three. . . Adjustment piece

231. . . Device department

2311. . . First sliding slot

2312. . . First clamping member

23121. . . Limit end

23122. . . Limit hole

23123. . . Thread part

23124. . . Nut

23125. . . washer

232. . . Column

2321. . . Third locking hole

2322. . . Second pivot

2323. . . Second sliding slot

2324. . . Second clamping member

23241. . . Limit end

23242. . . Limit hole

23243. . . Thread part

23244. . . Nut

23245. . . washer

2325. . . Through hole

twenty four. . . Lock firmware

25. . . Displacement member

26. . . Bone nail

Claims (8)

An external fixation device for orthopedics includes: a rod body; at least one clamp group, wherein a central portion is provided with a first groove for clamping the rod body, and one end of the clamp group is provided with a first locking hole The other end is respectively provided with a second locking hole and a second groove, the second locking hole is penetrated through the second groove, and the second groove is disposed on a side corresponding to the second locking hole a first pivoting portion; and at least one adjusting member pivotally disposed on the clamp assembly, having a rotation stroke, comprising: a device portion having at least one first sliding slot disposed thereon, the first sliding slot being disposed Having at least one first clamping member; and a cylindrical portion disposed in an intersecting manner with the device portion, a third locking hole is disposed around each of the four sides of the front end portion, and the third locking hole is disposed in the third locking hole A second pivoting portion is disposed on the outer periphery, and the third locking portion and the second pivoting portion are configured to pivot the at least one adjusting member to the first pivoting of the second recess of the clamp group a second sliding groove is disposed around the four sides of the middle portion of the column portion, and the second sliding portion The groove may be respectively provided with at least one second clamping member, and a through hole is formed in an axial surface of the front end portion of the cylindrical portion, the through hole is inter-connected with the second sliding groove; the orthopaedic external fixing device further includes at least An O-ring displacement member is sleeved on the rod body, so that the clamp group is clamped to the displacement member to change different angles, and the displacement member has a displacement stroke, and the clamp group is clamped On the displacement member, correspondingly contacting the outer spherical surface, so that the clamp group can be based on the outer The spherical surface movement adjusts different angles; the adjusting member can adjust the changing direction so that the adjusting member and the rod body are horizontally or vertically, and after the combination, the adjusting member can be rotated at different angles; and the adjusting member is Rotating stroke and changing the fixed direction, further allowing the plurality of bone nails to pass through the device portion of the adjusting member and the first clamping member and/or other clamping members provided on the column portion, and the direction and angle of the fracture are observed Adjustment, change level fixed mode, vertical fixed mode or three-dimensional fixed mode. The external fixation device for orthopedics according to claim 1, wherein one end of the first clamping member and the second clamping member are respectively provided with a stop for the first clamping member and the second The clamping member is separated from the limiting end of the first sliding slot and the second sliding slot, and a limiting hole is disposed at the limiting end. The external fixation device for orthopedics according to claim 2, wherein the limiting hole is adapted to be inserted into at least one bone nail for implantation into a bone of a human body. The external fixation device for orthopedics according to claim 2, wherein the other ends of the first clamping member and the second clamping member are respectively provided with a threaded portion, and a nut is provided corresponding to the threaded portion. The external fixation device for orthopedics according to claim 4, wherein the first sliding groove and the second sliding groove and the nut further comprise a locking washer. The external fixation device for orthopedics according to claim 5, wherein the external fixation device for orthopedics further comprises a plurality of locks, and the fasteners are used for the fasteners. The first locking hole, the second locking hole and the third locking hole are locked to lock the clamp group to the displacement member. The external fixation device for orthopedics according to claim 6, wherein the clamp assembly is divided into an upper clamp member and a lower clamp member. The external fixation device for orthopedics according to claim 7, wherein the second groove is a U-shaped groove.