KR20190044967A - Fracture reduction traction device and fracture reduction system capable of fine adjustment in biaxial degree of freedom - Google Patents

Abstract

The present invention relates to a traction device for fracture reduction capable of micro adjustment of a biaxial freedom degree, and a fracture reduction system. The traction device for fracture reduction includes: a coupling unit which tracts a fractured bone by being fixated on one side of the fractured bone in order to align the longitudinal axis of a bone dislocated by fracture; a first driving unit which advances and retreats the coupling unit in the axial direction; and a second driving unit which rotates the coupling unit based on the axis. The present invention includes an affected part fixing device including: a chamber which has an accommodation unit of a single quotation mark (′) shape where the other side of the fractured bone is seated; and at least one adjustment unit which is included in the accommodation unit and adjusts a degree of protruding from the accommodation unit. The coupling unit is driven in two directions in order to tract and rotate one side of a fractured bone to reduce bone fracture, and the other side of the bone can be finely adjusted for bonding as the adjustment unit pressurizes the fractured bone in two directions.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traction apparatus for fracture reduction and a fracture reduction system capable of finely adjusting two-

[0001] The present invention relates to a traction device for fracture reduction and a fracture reduction system, which comprises a traction device for bifurcating a bifurcated fracture to traverse and rotate the fractured bone, and a traction device for traction of the fracture, The present invention relates to a fracture reduction system including a foreign body fixation device.

Surgical treatment of the arms, legs, and pelvis fractures consists of reduction and fixation of the fragments. These surgeries usually involve two or three surgeons. The reason for the relatively large number of medical staffs is that the fracture site of the patient must be pulled with great force for the reduction of the fracture, and the femoral bone reaches a maximum of 200 to 400N. In addition, since the traction site should be maintained for a long time after traction of the affected part of the patient, the surgeon is required to bear a large physical burden.

FIG. 1 shows a process of reducing a fractured bone. Referring to FIG. 1, in the process of fracture disconnection, when the continuity of the bone is completely lost or discontinuously disappeared by the external force as in the present example, As shown in FIG. For bone joining, first, one end of the fractured bone must be trained to align with the longitudinal axis. Thereafter, the fractured bone is pivoted by pushing the cut face of the fractured bone to fit, thereby conquering the fractured bone.

In the conventional case, a dedicated operating table for fracture surgery for pulling down and pulling the fracture in the form of pulling and fixing the foot portion is commercially available, but fine adjustment of the bone fragments is still difficult. Korean Patent No. 10-1564717 discloses a bone traction device and a fracture reduction device (hereinafter abbreviated as 'prior art') including the bone traction device. In the above-mentioned prior art, both the first bone fragment and the second bone fragment separated from each other are fixed through the fixing pins (201, 301, FIG. 4). Further, the structure for retracting the bone fragments by pulling and pivoting is performed by a separate holding member 190 (see FIG. 4). To be more precise, in the preceding document, the side piece to be pulled can be adjusted by two axes, while the side piece to be joined is fixed by the fixing pin 201. In this case, depending on the position of the affected part of the fractured bone or the state of the cut surface of the bone, the operation can be made easier if the biaxial fine adjustment of both bone fragments is possible.

Korean Patent No. 10-1564717

An object of the present invention is to provide a traction device for fracture reduction and an affected part fixation device which adjusts one side of the fractured fragment to the far side from the heart by traction and rotation and performs fine adjustment of the other side of the fragment to two axes. Accordingly, the present invention aims to provide a medical fracture reduction system that minimizes incision and invasive procedures of the affected part, and minimizes damage to adjacent muscles, while minimizing fracture reduction.

In order to achieve the above object, the present invention provides a traction apparatus for traction of a fractured bone, the traction apparatus for traction of a fractured bone, wherein the traction bone is fixed to a fractured bone to align the longitudinal axis of the bone with the fractured bone, A fastening portion for pulling the fastener; A first driving part for moving the coupling part in the direction of the axis; And a second driving unit that rotates the coupling unit with respect to the axis, wherein the coupling unit is driven by two axes so as to pull and rotate the fractured bone for reduction.

Preferably, the fastening portion includes: a fixing pin for inserting and fixing the fractured bone; A clamp which clamps both ends of the fixing pin and surrounds the affected part; And a connection line having one end connected to the clamp and the other end connected to the second driving unit and transmitting the rotational force of the second driving unit.

Preferably, the fastening portion includes: a fixing pin for inserting and fixing the fractured bone; A clamp which clamps both ends of the fixing pin and surrounds the affected part; And a connecting line to which one end is connected to the clamp and the other end is connected to the first driving unit and to which the advancing / retreating driving force of the first driving unit is transmitted, and the first driving unit is provided on the second driving unit, The rotational force of the motor can be transmitted.

Preferably, the first driving unit includes: a first motor for generating power; And a guide rail having a predetermined length and accommodating the first motor and guiding the power generated in the first motor in the longitudinal direction.

Preferably, the second driving unit includes: a second motor for generating power; And a motor bracket accommodating the second motor and transmitting the power generated by the second motor to the coupling portion by a rotational force, the motor bracket being received on the guide rail, And the second driving unit may be driven forward and backward along the longitudinal direction of the guide rail.

Preferably, the second driving unit may include a second motor for generating a rotational force and a guide rail for receiving the first driving unit, and the first driving unit may be provided on the guide rail, It is possible to rotate by a rotational force.

Preferably, the pulling apparatus for fracture reduction according to the present invention may further include a support unit for supporting the first driving unit and including a pulling lift on the base, the height of the first driving unit being adjustable.

In addition, the present invention provides a bone grafting device comprising: a fastening part for fastening a fractured bone to one side of a fractured bone to align a longitudinal axis of the bone with the fractured bone; A first driving part for moving the coupling part in the direction of the axis; And a second driving unit that rotates the coupling unit with respect to the axis, and a chamber having a shape of 'shaped' in which the other side of the fractured bone is seated; And a ring fixation device provided in the accommodation portion and including at least one adjustment portion whose degree of protrusion from the accommodation portion is adjusted so that the fastening portion can be tilted in two directions so as to pull and rotate one side of the fractured bone for reduction And the other side of the bone can be finely adjusted for bonding as the adjusting unit presses the fractured bone in the biaxial direction.

Preferably, the lesion fixing apparatus may further include a power section that provides power for adjusting the degree to which the adjustment section protrudes from the accommodating section.

Preferably, the power section includes an adjusting motor for generating a turning force; And a rack and pinion gear for transmitting and rotating the rotational force of the motor in a direction in which the adjusting portion is projected.

Preferably, the adjustment portion is formed of an air tube, and the power portion includes a piston for allowing air to flow in and out of the adjustment portion, so that the degree of protrusion of the adjustment portion from the accommodation portion due to the generation of air pressure can be adjusted.

According to another aspect of the present invention, there is provided a fracture reduction system comprising: a fastening portion for fastening a fractured bone to one side of a fractured bone to align a longitudinal axis of the bone with the fractured bone; A first driving part for moving the coupling part in the direction of the axis; And a second driving unit that rotates the coupling unit with respect to the axis, and a chamber having a shape of 'shaped' in which the other side of the fractured bone is seated; A chamber lift for adjusting a height of the chamber; And a chamber fixture having a chamber base to which the chamber lift is slidably coupled so as to be slidable to the left and right, wherein the fastening portion is driven by two shafts so that one side of the fractured bone can be pulled and pivoted for reduction, Another aspect of the present invention is that the adjustment section can be finely adjusted for bonding as it presses the fractured bone in the biaxial direction.

According to the present invention, there is an advantage that fine bone fragments separated in the course of fracture reduction can be finely adjusted to a total of 4 axes. In this case, the two-degree-of-freedom fracture traction traction device and the incision fixation device are configured to move the bone with less force than the conventional surgery, and the traction, direction, and position at the fracture site can be individually adjusted, It has a possible advantage. In addition, according to the present invention, it is possible to fix and pull with minimized invasion of the affected part, so that the incision of the affected part is not required, and the minute muscle fracture can be reduced while minimizing the peripheral muscle damage.

FIG. 1 shows a process of reducing a fractured bone.
2 illustrates a fracture reduction system in accordance with an embodiment of the present invention.
Figure 3 shows a traction tool for fracture reduction according to an embodiment of the present invention.
FIG. 4 illustrates a lesion fixing apparatus according to an embodiment of the present invention.
5 shows a ring fixation device according to another embodiment of the present invention.
6 shows a ring fixing apparatus according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the exemplary embodiments. Like reference numerals in the drawings denote members performing substantially the same function.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the purpose and effect of the present invention are not limited by the following description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

2 shows a fracture reduction system 1 according to an embodiment of the present invention.

Referring to FIG. 2, the fracture reduction system 1 includes a fracture reduction traction device 3 for traction and rotation of the bone to be inserted into or fixed to one side of the fractured bone fragment of the affected part 7, And a lesion fixing device 5 for fixing and adjusting the other side of the bone fragment. The fracture-pulling traction device 3 and the affected part fixation device 5 according to the present embodiment can perform fixation and fine adjustment of the fractured fragment B1. The other fractured bone fragment B2 can be fixed with a separate surgical device. Hereinafter, the configuration of the present invention will be described by referring to the fractured bone fragment B1 as the fractured bone.

In the present embodiment, the traction device 3 for fracture restoration can fix and pull the fractured bone to fix the bone fragment region in the direction far from the heart. Hereinafter, in this specification, a region of a bone fragment in a direction far from a heart out of fractured bones is referred to as one side, and a region of a bone fragment adjacent to a fracture surface of the fractured bone is referred to as the other side.

In this embodiment, the portion applied to the traction device 3 for fracture reduction does not limit the body part including the lower limbs such as the arm, the shin, and the thigh such as the fracture, but in the present embodiment, do.

The fracture removal traction device 3 may include a coupling part 31, a first driving part 33, a second driving part 35 and a supporting part 37. 3 shows a traction device 3 for fracture reduction according to an embodiment of the present invention. Fig. 3A shows a perspective view of a fracture-pulling traction device 3, and Fig. 3B shows a top view of a fracture-pulling traction device 3. Fig. 3C is a perspective view showing a state in which the connecting line is bent in multiple stages.

Referring to FIG. 3, the fastening portion 31 is fixed to the fractured bone to align the direction of the bone with the longitudinal axis of the fractured bone, and can be driven by a driving portion capable of pulling and rotating the fractured bone. Although the pulling apparatus 3 for fracture reduction according to the present embodiment is configured such that the fastening portion 31 can insert the bone through it, it can be fixed to the bone in another form to perform traction reduction.

The fastening portion 31 may include a fixing pin 311, a clamp 313, and a connecting line 315.

The fixing pin 311 can be connected to the fractured bone. The fixing pin 311 may penetrate the bone in a direction perpendicular to the longitudinal axis of the bone fragment. According to the present embodiment, the fixing pin 311 is inserted through and fixed to the bone as shown in FIG. 2. However, the fixing pin 311 is not inserted in the insertion portion, But may also be embodied in a clamping configuration for pressing and fixing both sides of the affected part. That is, the fixing pin 311 can achieve the intended effect of the present invention as long as it is a means for fixing the ring portion, and may include means for fixing the outside without being inserted into the ring portion.

The clamp 313 can fasten both ends of the fixing pin 311 and cover the affected part. The clamp 313 is an arc-shaped support frame for supporting the fixing pin 311. The clamp 313 surrounds the periphery of the ring portion and generates rotational torque at both ends of the fixing pin 311 when the rotational force is transmitted from the connecting line 315, So that the inserted fragment of the pin 311 can be rotated.

One end of the connecting line 315 is connected to the clamp 313 and the other end of the connecting line 315 is connected to the second driving unit 35 so that the rotational force of the second driving unit 35 can be transmitted. The connecting line 315 may be provided as a torsional tube which is bent while transmitting a rotational force, and may be provided in a multi-folded link structure.

The first driving part 33 can move the fastening part 31 in the direction of the axis of the fractured bone. The first driving unit 33 may include a first motor 331 and a guide rail 333.

The first motor 331 can generate power, and a known motor that provides a rotational force in this embodiment can be used. The first motor 331 is disposed at the rear end of the guide rail 333 and transmits power for advancing and retreating on an axis coinciding with the engaging portion 31. The first driving portion 33 can be vertically adjusted by the pulling lift 371 of the support portion 37 to be described later so as to be adjusted to the shaft aligned with the coupling portion 31. [

The guide rail 333 has a predetermined length and accommodates the first motor 331 and can guide the power generated by the first motor 331 in the longitudinal direction. In this embodiment, the guide rail 333 can be connected to the first motor 331 with a driving screw 3331. The driving screw 3331 is rotated by the rotation of the first motor 331, and the second driving unit 35 can be moved forward and backward in accordance with the thread engagement.

The second driving unit 35 can rotate the fastening unit 31 about the longitudinal axis of the fractured bone. The second driving unit 35 may include a second motor 351 and a motor bracket 353. The second driving unit 35 may be provided on the guide rail 333 of the first driving unit 33. Accordingly, the second driving part 35 is advanced back and forth through the first driving part 33, and the coupling part 31 can be rotated on the guide rail 333.

The second motor 351 can generate power, and a well-known motor that provides a rotational force in this embodiment can be used.

The motor bracket 353 is accommodated on the guide rail 333 so that the second driving part 35 can be driven to advance and retreat along the longitudinal direction of the guide rail 333 by the power of the first motor 331. The motor bracket 353 can transmit the turning force of the second motor 351 to the connecting line 315.

Referring to FIG. 3, it can be seen that the second driving unit 35, which provides the rotational force, is disposed on the first driving unit 33 that provides the forward and backward driving force. As another embodiment of the present invention, the fracture reduction system may be implemented with inverted arrangement of the first driving unit 33 and the second driving unit 35. In this case, the first driving part 33 providing the advancing / retreating driving force is connected to the connecting line 315 so that the connecting line 315 is driven forward and backward and the second driving part 35 rotates the first driving part 33, 315 can be performed.

The supporting portion 37 may be provided on the pulling base 373 to support the first driving portion 33 and to adjust the height of the first driving portion 33. The pulling lift 371 supports the lower end of the guide rail 333 and can adjust the position of the driving unit. Accordingly, the height of the first driving part 33 and the second driving part 35 can be adjusted so as to be positioned on the axis of the fragment piece where the coupling part 31 is located.

4 shows a lesion fixing device 5 according to an embodiment of the present invention.

4, the lesion fixing device 5 may include a chamber 51 in which the receiving portion 52 is formed, an adjusting portion 53, and a power portion 55. According to the present embodiment, the bone to which the fractured bone piece is to be joined is fixed by a separate fixation device. In the affected part fixation device 5, Is adjusted to two axes. That is, according to the present embodiment, the cutting side of the fractured bone piece is adjusted in the biaxial direction through the adjusting part 53, and the opposite side of the cutting face is pulled and rotated by the fracture reduction retractor 3, .

The accommodating portion 52 refers to a region where the other side of the user's bone piece is fixed. The receiving portion 53 seats a body in which a fracture such as an arm or a leg is formed in a depressed region of the shape of the chamber 51, and a bone close to a cut surface of the fractured bone is positioned. The chamber 51 means a configuration in which the accommodating portion 53 is formed to fix the affected portion 7 of the user. The receiving portion 53 may be provided to be connected to the chamber 51 with a lid (not shown) positioned above the receiving portion to prevent the body, such as an arm or a leg, from being separated during surgery.

The adjustment portion 53 may be provided in one or more than one of the accommodating portions 52 and the degree of protrusion from the accommodating portion 52 may be adjusted. In this embodiment, the adjustment portion 53 is provided with two portions 53a and 53b at both ends of the x-axis in the accommodating portion 52 and protrudes inward, so that the affected portion can be pressed and fixed, As the pressing force is adjusted, the bone fragments can be adjusted in the x-axis direction. In addition, the adjustment unit 53 is additionally provided with one (53c) in the lower end in the y-axis direction in the accommodating portion 52, and the degree of projecting in the up-and-down direction is adjusted to adjust the skeleton in the y-axis direction.

The power section 55 can provide power for adjusting the degree to which the adjustment section 53 protrudes from the accommodation section 52. [ The power section 55 may be provided in various embodiments according to a method of transmitting power to the adjustment section 53, and Figs. 4, 5, and 6 show different embodiments of the power section 55, respectively.

4A shows a front view of the affected part fixation device 5 and FIG. 4B shows an internal view of the affected part fixation device 5 in an embodiment of the present invention. .

Referring to FIG. 4B, in an embodiment of the power section 55, the power section 55 includes a regulating motor 551 for generating a turning force and a regulating motor 551 for regulating the rotational force of the regulating motor 551 in the direction in which the regulating section 53 projects And rack and pinion gear 553 for switching and delivering. In this case, a plurality of power units 55 may be provided on the chamber 51 in correspondence with the number of the adjustment units 53. In the embodiment of Fig. 4B, the adjustment portion 53 may be provided with a plate having a large end.

5, the adjustment portion 53 is formed of an air tube, and the power portion 55 includes a piston 55 for allowing air to flow in and out of the adjustment portion 53, It is possible to adjust the extent to which the adjustment portion 53 protrudes from the accommodating portion 52 due to the generation of air pressure.

In the embodiment of Figure 5, the adjustment portion 53 may be provided with a tube that can be pneumatically inflated. In this case, a hydraulic device for adjusting the air pressure of the piston 55 is separately provided, and the adjustment unit 53 can be controlled by precisely controlling the air pressure according to the system control.

6, the lesion fixing apparatus 5 may include a chamber 51, a chamber lift 57, and a chamber base 59 in which a receiving portion 52 is formed. In the present embodiment, the accommodating portion 52 of the chamber 51 is not provided with the configuration of the adjusting portion 53 that is separately projected. 6, the chamber 51 itself is vertically and horizontally driven to adjust the position of the affected part 7. The chamber lift 57 can adjust the height of the chamber 51. The chamber base 59 can be coupled such that the chamber lift 57 is slidably drivable from side to side.

Although not shown in the drawings, in another embodiment of the present invention, the chamber 51 may further include a cover portion that is opened and closed on the upper portion of the receiving portion 52 to prevent separation of the ring portion seated in the receiving portion 52. The cover portion may be provided as a cover detachably coupled to the upper portion of the chamber 51 in a configuration separate from the chamber 51. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. will be. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by all changes or modifications derived from the scope of the appended claims and equivalents of the following claims.

1: fracture reduction system 3: fracture reduction traction system
31: fastening part 311:
313: Clamp 315: Connector
33: first driving part 331: first motor
333: Guide rail 3331: Driving screw
35: second driving part 351: second motor
353: Motor bracket 37: Support
371: Traction lift 373: Traction base
5: Affixing device 51: chamber
52: accommodating portion 53: adjusting portion
55: driving part 551: adjusting motor
553: Rack & pinion gear 55: Piston
57: chamber lift 59: chamber base
7: Infection 8: Medical imaging equipment
9: Control device

Claims (10)

Claims 1. A traction apparatus for traction of a fractured bone,
A fastening portion fixed to the fractured bone to pull the fractured bone to align the direction of the bone with the longitudinal axis of the fractured bone;
A first driving part for moving the coupling part in the direction of the axis; And
And a second driving unit that rotates the coupling unit with respect to the axis,
Wherein the fastening portion is driven by two shafts so as to pull and rotate the fractured bone for reduction.
The method according to claim 1,
The fastening portion
A fixation pin for fixing the fractured bone;
A clamp which clamps both ends of the fixing pin and surrounds the affected part; And
And a connecting line to which one end is connected to the clamp and the other end is connected to the second driving unit to transmit the rotational force of the second driving unit.
The method according to claim 1,
Wherein the first driving unit includes:
A first motor for generating power; And
And a guide rail having a predetermined length and accommodating the first motor and guiding the power generated by the first motor in the longitudinal direction.
The method of claim 3,
Wherein the second driver comprises:
A second motor for generating a power; And
And a motor bracket accommodating the second motor and transmitting the power generated by the second motor to the coupling unit by rotational force,
Wherein the motor bracket is received on the guide rail, and the second driving part is driven forward and backward along the longitudinal direction of the guide rail by the power of the first motor.
The method according to claim 1,
Further comprising a support provided on the traction base for supporting the first driving unit and adjusting the height of the first driving unit.
A fastening portion fixed to one side of the fractured bone for pulling the fractured bone to align the longitudinal axis of the fractured bone with the fractured bone; A first driving part for moving the coupling part in the direction of the axis; And a second driving unit that rotates the coupling unit with respect to the axis,
A chamber in which a receiving portion of a 'shaped' shape on which the other side of the fractured bone is seated; And at least one adjuster provided in the accommodating portion and adjusted in a degree of protrusion from the accommodating portion,
The coupling part is driven by two shafts so that one side of the fractured bone can be pulled and pivoted for reduction, and the other side of the bone can be finely adjusted for bonding as the adjustment part presses the fractured bone in the biaxial direction Fracture reduction system.
The method according to claim 6,
In the affected part fixing device,
Further comprising a power section for providing power for adjusting the degree to which the adjustment section is projected from the accommodating section.
8. The method of claim 7,
The power unit includes:
An adjusting motor for generating a turning force; And
And a rack and pinion gear for transmitting and rotating the rotational force of the adjusting motor in a direction in which the adjusting portion is projected.
8. The method of claim 7,
Wherein,
An air tube,
The power unit includes:
And a piston for allowing air to flow in and out of the adjusting section, wherein the degree of protrusion of the adjusting section from the accommodating section is controlled by the generation of air pressure.
A fastening portion fixed to one side of the fractured bone for pulling the fractured bone to align the longitudinal axis of the fractured bone with the fractured bone; A first driving part for moving the coupling part in the direction of the axis; And a second driving unit that rotates the coupling unit with respect to the axis,
A chamber in which a receiving portion of a 'shaped' shape on which the other side of the fractured bone is seated; A chamber lift for adjusting a height of the chamber; And a chamber fixture having a chamber base to which the chamber lift is slidably coupled to the left and right,
The coupling part is driven by two shafts so that one side of the fractured bone can be pulled and pivoted for reduction, and the other side of the bone can be finely adjusted for bonding as the adjustment part presses the fractured bone in the biaxial direction Fracture reduction system.

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