KR102266894B1 - Screw guide device for calcaneus fracture osteosynthesis - Google Patents

Abstract

In one embodiment of the present invention, in the screw guide device for guiding the pipe screw inserted into the calcaneus, one side is connected to the metal plate by using a connecting screw fastened to one or more grooves formed in the metal plate fixed to the calcaneus, It provides a screw guide device for calcaneal fracture surgery comprising a guide part formed on the other side to have one or more guide grooves into which the canal screw is inserted into the calcaneus and the canal screw that is inserted into the calcaneus to guide the canal screw is inserted.

Description

Screw guide device for calcaneal fracture osteosynthesis {SCREW GUIDE DEVICE FOR CALCANEUS FRACTURE OSTEOSYNTHESIS}

The present invention relates to a screw guide device for osseointegration of calcaneus fractures, and more particularly, by inserting and fixing screws into the calcaneus so as not to collide with screws fastened to a metal plate fixed to the calcaneus during calcaneal fracture surgery, thereby improving the fixation of the surgical site. It relates to a screw guide device for calcaneal fracture osseointegration.

The calcaneus is one of the tarsal bones in the so-called heel region, and the upper surface is loaded with the talus, making joints on three surfaces, and the front is in contact with the cubic bone in the articular surface.

When a calcaneal fracture occurs due to a fall, etc., as shown in Fig. 1a, after exposing the fracture site through an extensive incision, several screws are inserted into the area to apply and fix a metal plate that can be fixed. Method of performing calcaneal fracture surgery. In the case of calcaneal fractures, the patient falls from a high place. Most of the time, the cortical bone on the outside of the calcaneus bulges out and stimulates the muscles and skin. Therefore, there is a need for a metal plate that can press and fix the cortical bone protruding from the outside.

In the case of a conventional metal plate, as shown in FIG. 1a, a screw is fixed through a metal plate on the joint surface and the metal plate is manufactured to be large so that it can cover a large area of the calcaneus.

In the case of a conventional metal plate, as shown in Figure 1b, the screw is fixed to the joint surface area through the metal plate, and the back of the metal plate is fixed toward the bottom of the back of the calcaneus.

In the case of the calcaneal fracture surgical method using such a metal plate, since the incision site is wide, it is difficult to seal the wound after application and fixation of the metal plate, or there is a risk of bacterial infection later, and there is a problem that is accompanied by great pain after surgery. In order to solve this problem, a minimally invasive surgical method for performing calcaneal fracture surgery with minimal incision was studied, and thus, as shown in FIG. 1b , minimally invasive surgery that can be applied to calcaneal fracture surgery even with a minimal incision. (invasiveness) A metal plate was developed.

However, in the case of a minimally invasive metal plate, since it must be applicable even with a minimal incision, the minimally invasive metal plate cannot be applied to a wide area of the calcaneus, and because the minimally invasive metal plate is fixed using a minimum screw for a minimum area, the conventional There was a problem that it could not be fixed with more screws than a general metal plate, which eventually led to a weakening of the fixing power of the metal plate.

The present invention has been devised to solve the above problems, and the main technical problem to be achieved by the present invention is to insert and fix a screw into the calcaneus so as not to collide with the screw fastened to the metal plate fixed to the calcaneus during calcaneal fracture surgery. An object of the present invention is to provide a screw guide device for osteosynthesis of calcaneal fractures that can improve the fixation force of the bone.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

One embodiment of the present invention in order to solve the above technical problem, in the screw guide device for guiding the pipe screw to be inserted into the calcaneus, one side using a connection screw fastened to one or more grooves formed in the metal plate fixed to the calcaneus For calcaneal fracture surgery including a guide part connected to the metal plate and formed on the other side to have one or more guide grooves connected to the metal plate and inserted into the canal screw inserted into the calcaneus and the guide steel wire inserted into the calcaneus to guide the canal screw A screw guide device is provided.

In this embodiment, it is inserted into the one or more guide grooves may further include an inner guide to prevent the guide wire inserted into the calcaneus from coming out to the outside of the calcaneus.

In this embodiment, the inner guide, a first member in contact with the skin of the calcaneus, a second member protruding in the outward direction of the calcaneus by the distance between the skin of the calcaneus and the calcaneus, the one or more guide grooves It may include a mounting jaw formed along the outer periphery to be mounted, and a fixing bolt and a fixing nut to be fixed to the one or more guide grooves.

In this embodiment, the one or more guide grooves have a hollow rectangular parallelepiped shape with an upper surface and a lower surface parallel to each other, the distance between the upper surface and the lower surface is equal to the width of the guide steel wire, and the left and right space of the guide steel wire Position adjustment may be possible.

In this embodiment, the one or more guide grooves, the outer surface is provided to coincide with the outer surface of the metal plate is formed so that the guide steel wire does not come out to the outside of the calcaneus, some or all of the inner surface may be perforated

In this embodiment, the guide wire and the related pipe screw may be inserted from the rear of the calcaneus through the one or more guide grooves so as not to come into contact with the screw inserted into the calcaneus.

According to the present invention, strong fixation of the calcaneal fracture surgical site is possible by inserting and fixing an additional screw in a part where the fixation force may be weak while using a minimally invasive metal plate. At this time, it does not collide with several locking screws fastened to the minimally invasive metal plate. The canal screw can be fixed at the back of the calcaneus to prevent it.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

Figure 1a is a view for explaining a conventional calcaneal fracture surgery, Figure 1b is a view for explaining a minimally invasive metal plate calcaneus fracture surgery.
2 is a view illustrating a minimally invasive metal plate and a drill guide applied to the present invention.
Figure 3 is a view for explaining that the metal plate of Figure 2 is fixed to the calcaneus.
4 is a view illustrating a screw guide device for calcaneal fracture osteosynthesis according to an embodiment of the present invention.
5 is a view showing a state in which the screw guide device for calcaneal fracture osteosynthesis and the metal plate of FIG. 2 are fixed to the calcaneus from top to bottom according to an embodiment of the present invention.
6 is a view showing a state in which the inner guide of the screw guide device for calcaneal fracture osteosynthesis according to an embodiment of the present invention is coupled to the guide groove.
7 is a view illustrating a state after performing calcaneal fracture surgery using the screw guide device for osseointegration of calcaneal fractures and the metal plate of FIG. 2 according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include water, equivalents and substitutes. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the size, shape, and shape of each component shown in the drawings may be variously modified, and for the same / similar parts with respect to the entire specification Identical/similar reference numerals have been assigned.

The suffix "part" for the components used in the following description is given or mixed in consideration of only the ease of writing the specification, and does not have a meaning or role distinct from each other by itself. In addition, in describing the embodiments disclosed in the present specification, when it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, detailed descriptions thereof are omitted.

Throughout the specification, when a part is said to be “connected (connected, contacted, or coupled)” with another part, this means not only when it is “directly connected (connected, contacted, or coupled)” but also refers to another member in the middle. It also includes the case of "indirectly connected (connected, contacted, or combined)" between them. Also, when a part "includes (provides or provides)" a component, it does not exclude other components unless otherwise stated, but further "includes (provides or provides)" other components. means you can

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes a plural expression unless the context clearly indicates otherwise, and components implemented in a dispersed form may be implemented in a combined form unless there is a special limitation. In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Also, terms including ordinal numbers such as first, second, etc. used herein may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

As used herein, the outer side refers to the outer region of the calcaneus, and indicates the direction in which the blade of the foot is based on the heel of the person, and the inner side refers to the inner region of the calcaneus, which is opposite to the direction in which the blade of the foot is based on the heel. Indicates the direction (inward direction).

Figure 2 is a diagram illustrating a metal plate and a drill guide applied to the present invention, Figure 3 is a diagram illustrating that the metal plate of Figure 2 is fixed to the calcaneus, Figure 4 is an embodiment of the present invention It is a view illustrating a screw guide device for osseointegration of calcaneal fractures according to an example, and FIG. 5 is a screw guide device for calcaneal fracture osseointegration according to an embodiment of the present invention and the metal plate of FIG. 2 is combined. 6 is a view showing that the inner guide of the screw guide device for calcaneal fracture osteosynthesis according to an embodiment of the present invention is coupled to the guide groove, and FIG. 7 is an embodiment of the present invention As a drawing to explain the appearance after performing calcaneal fracture surgery using the screw guide device for osseointegration of calcaneus fracture according to Fig. 2 and the metal plate of Fig. 2, there may be omitted reference numerals in some drawings, but in other drawings Elements denoted by the same reference numerals are identical and include identical sub-elements.

Before describing the screw guide device for calcaneal fracture osseointegration according to an embodiment of the present invention, a metal plate and a drill guide applied to the present invention will be first described with reference to FIGS. 2 and 3 .

Metal plate 110 is fixed to the calcaneus, one end is formed in a bent downward form, the metal plate 110 is formed with a screw thread, the first to eighth screw grooves (111; 112) that can be fastened to the locking screw (111a); 113; 114; 115; 116; 117; 118) are formed.

The drill guide 120 has a screw portion 121 formed at one end so as to be fastened to at least one of the first to eighth screw grooves 111; 112; 113; 114; 115; 116; 117; 118; 1 to 8 screw grooves (111; 112; 113; 114; 115; 116; 117; 118) to guide the screw fastened to at least one of the metal plate 110 is used to drill the fixed calcaneus.

When drilling the calcaneus by inserting the drill into the screw groove through the drill guide 120, the screw portion 121 of the drill guide 120 engages the screw thread formed in the screw groove and the drill is inserted at a specific angle. The screw fastened to the metal plate 110 and the drilled calcaneus at the specific angle may also be inserted.

Referring to FIGS. 4 to 6 shown to explain the screw guide device 200 for calcaneal fracture surgery, the screw guide device 200 for calcaneal fracture surgery is a device for guiding the associated screw inserted into the calcaneus, and is connected It includes a screw 210 and a guide unit 220 , and may further include an inner guide 240 .

The connecting screw 210 is fastened to one or more grooves formed in the metal plate 110 fixed to the calcaneus and one or more formed (or provided) at one end to be connected to the metal plate 110 .

The guide unit 220 is formed on the other side to have one or more guide grooves 221 into which the canal screw is inserted into the calcaneus and the guide steel wire that is inserted into the calcaneus to guide the canal screw is inserted.

The inner guide 240 is. It is inserted into one or more guide grooves 221 to prevent the guide wire inserted into the calcaneus from coming out of the inner side of the calcaneus.

In addition, the medial guide, the first member 241 in contact with the skin of the calcaneus, the second member 242 protruding outwardly of the calcaneus by the distance between the skin of the calcaneus and the calcaneus, guide grooves 221 ) It includes a mounting jaw 243 formed along the outer periphery so as to be mounted on the, and a fixing bolt 244 and a fixing nut 245 to be fixed to the guide groove 221 .

Here, the guide groove 221 has a hollow rectangular parallelepiped shape with an upper surface and a lower surface parallel to each other, the distance between the upper surface and the lower surface is equal to the width of the induction steel wire (K), and the left and right space of the guide steel wire (K) It may be formed so that position adjustment is possible.

In addition, the guide groove 221 is provided so that the outer surface coincides with the outer surface of the metal plate 110a and is formed to be blocked so that the guide steel wire (K) does not come out to the outside of the calcaneus, a part of the inner surface Or it may be all open (or perforated).

In addition, it is preferable that the guide steel wire and the associated screw are inserted from the rear of the calcaneus through the guide groove 221 so as not to come into contact with the screw inserted into the calcaneus.

Hereinafter, a method of using the screw guide device for calcaneal fracture surgery and a method of performing calcaneal fracture surgery based on this will be described based on the above-described content, but the embodiment of the present invention is not necessarily limited to only the following method, Embodiments of the invention may be implemented with various modifications.

The metal plate 110 has first to eighth screw grooves (111; 112; 113; 114; 115; 116; 117; 118; hereinafter referred to as omitted), that is, eight grooves to which screws are fastened, and each screw groove has It has a thread and is engaged with a locking screw. On the other hand, the screw portion 121 of the drill guide 120 is engaged with the screw groove and is fastened at a predetermined angle to insert the drill, so the drill is inserted at a predetermined angle, and thus the locking screw is also inserted into the metal plate 110 at a predetermined angle. Since the size of the patient's calcaneus is different for each patient, the size of the metal plate can be manufactured by varying the length between the third and fourth screw grooves and the length between the sixth and seventh screw grooves to manufacture metal plates of various sizes.

In the course of surgery, first, if the drill guide 120 is fastened to the first and fifth screw grooves, the metal plate 110 can be easily moved, and therefore, hold the drill guide 120 after making a minimal incision in the calcaneal articular surface. The metal plate 110 is inserted into an appropriate position. After fastening the drill guide 120 to the second, 4, 5, 6, 7, and 8 screw grooves, drilling is performed and the locking screw is inserted at a predetermined position.

The screw guide device 200 for calcaneal fracture surgery is connected to the first and third screw grooves through the connecting screw 210 and fastened to the metal plate 110 . One or more guide grooves, for example, seven guide grooves (221; 222; 223; 224; 225; 226; 227 hereinafter) may be provided in the screw guide device 200 for calcaneal fracture surgery. have. When the guide steel wire is inserted into each guide groove, it is inserted at an appropriate angle to avoid collision with the locking screw fastened to the metal plate 110, respectively. For example, in the guide groove 221, the guide steel wire (K) is inserted into the inlet open to (cdgh), the guide wire (K) comes out through the exit open to (abef), and the guide wire (K) is inserted into the calcaneus bone to insert the sixth And it can proceed without collision between the screws fastened to the seventh screw groove. The guide groove has an upper surface (a-c-g-e) and a lower surface (b-d-h-f) parallel to each other, and the distance between the two surfaces is the same as the guide steel wire. However, the guide steel wire can be moved left and right. For example, the (abcd) surface of the guide groove 221 on the outside coincides with the same surface as the metal plate 110 so that the guide wire (K) does not fall out of the calcaneus bone. . On the other hand, since the size of the calcaneus may be different for each person, the screw guide device 200 for calcaneal fracture surgery is a screw guide device 200 for calcaneal fracture surgery that fits each metal plate 110 according to the length of the metal plate 110. can

As shown in FIG. 5 , referring to the state in which the screw guide device 200 for calcaneal fracture surgery is coupled to the metal plate 110 when viewed from the top down, it can be confirmed that the screw is fastened to the screw groove.

Here, the inner surface of one or more guide grooves, for example, the inner surface (e-f-h-g) of the guide groove 221 in order to match the inner and outer widths of the calcaneus can be made open. On the other hand, when inserting the guide wire into the guide groove, the inner guide 240 is inserted into the guide groove from the inside to prevent the guide wire from falling out of the skin. One side of the first member 241 is on the inner skin of the calcaneus. In contact, it is possible to stop the inner guide 240 at an appropriate position so that it does not move outward any more in the guide groove. At this time, the second member 242 is positioned to protrude outward by the distance of the calcaneus from the skin, and when the guide wire is inserted along the outer surface of the second member 242, the guide wire does not fall into the inner side of the calcaneus so that it can be located in the bone. help

Referring to FIG. 6 showing the insertion of the inner guide 240 into the guide groove, the groove in which the fixing bolt 244 and the fixing bolt 244 can be fastened so that the inner guide 240 is fixed to the guide groove. When the fixing nut 245 is tightened after inserting the inner guide 240 into the guide groove because there is a fixing nut 245 with can do.

A patient's fractures have different occurrence patterns and different fracture shapes. After inserting a guide steel wire into several guide grooves to suit each fracture shape, remove the inner guide 240 and release the connecting screw 210 to obtain multiple guides. Since the steel wire can come out through the open inner surface (efhg) of each guide groove, the guide part 220 of the screw guide device 200 for calcaneal fracture surgery can be separated from the metal plate 110 .

Finally, a locking screw is inserted into the first and third screw grooves of the minimally invasive metal plate 110, and the calcaneus can be fixed by inserting the related screw into several guide wires without collision.

As described above, using the screw guide device for calcaneal fracture surgery according to the present invention, it is possible to perform strong fixation of the surgical site by performing additional screw fixation of a part where the fixation force may be weak while using a minimally invasive metal plate, At this time, several related screws can be fixed at the back of the calcaneus so as not to collide with the multiple locking screws fastened to the minimally invasive metal plate.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

Claims (7)

In the screw guide device for calcaneal fracture surgery for guiding the canal screw inserted into the calcaneus so as not to collide with the locking screw fastened to the metal plate fixed to the calcaneus,
One side is connected to the metal plate using a connection screw fastened to one or more grooves formed in the metal plate fixed to the calcaneus, and a guide steel wire inserted into the calcaneus and inserted into the calcaneus and the calcaneus to guide the canal screws is inserted It includes a guide portion that is bent along the rear surface of the calcaneus formed on the other side so as to have one or more guide grooves that are,
The guide groove has an inner side open and an outer side blocked,
Further comprising an inner guide that blocks the inner surface of the guide groove so that the guide steel wire inserted into the guide groove and inserted into the calcaneus does not deviate to the outside of the inner surface of the calcaneus,
The inner guide is a first member in contact with the skin on the side of the calcaneus, a second member protruding in the outward direction of the calcaneus by the distance between the skin and the calcaneus, a mounting jaw formed to be mounted on the periphery of the guide groove, and the A screw guide device for calcaneal fracture surgery, characterized in that it comprises a fixing bolt and a fixing nut formed in the rear so as to be fixed to the guide groove.
delete delete According to claim 1,
The one or more guide grooves have a hollow rectangular parallelepiped shape with an upper surface and a lower surface parallel to each other, the distance between the upper surface and the lower surface is equal to the width of the guide steel wire, and the position of the guide steel wire can be adjusted in the left and right spaces A screw guide device for calcaneal fracture surgery.
delete According to claim 1,
The guide wire and the tube screw guide device for calcaneal fracture surgery, characterized in that inserted from the back of the calcaneus through the one or more guide grooves so as not to come into contact with the screw inserted into the calcaneus.
According to claim 1,
The metal plate is fixed to the articular surface of the calcaneus, the screw guide device for calcaneal fracture surgery, characterized in that the insertion in the upper front direction from the lower back of the calcaneus.

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