JP2017113291A - Fracture treatment tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of screw members as far as possible, used for a plate fixation method which is a surgical treatment method, to simplify and quicken a treatment surgery.SOLUTION: A fracture treatment tool 10 comprises: a bone pad plate 12 arranged along a fracture portion 11A of a bone 11; screw members 13 for fixing the bone pad plate 12 to the bone 11; and annular clips 14 for reinforcement of fixation of the bone pad plate 12. By enhancing fixation force of the annular clip, the screw member 13 can be omitted and fixation of the bone pad plate can be performed by only the annular clips 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fracture treatment device, and particularly to a fracture treatment device suitable for reducing the number of fixing screws when a bone pad is fixed to a bone.

  Fracture treatment is generally performed in orthopedics. As an example of a surgical treatment procedure in orthopedics, there is a method of treating a fractured bone by applying a plate to the fracture site (“plate fixation method”). In this surgical treatment, the tissue around the fracture site is incised to expose the fracture site, the fracture site is adjusted and the fracture site is returned to the state before the fracture, and then the required plate Is placed so as to span the fracture site, and a screw member is embedded in the bone through a screw hole formed in the plate to fix the plate to the bone. The plate functions as a bone pad for the fracture site, thereby strengthening the fixation of bone parts (bone fragments) located on both sides of the fracture site. The plate suppresses the movement of the fracture site, reduces the stress generated in the fracture site due to external force, and promotes healing of the fractured bone.

  As a conventional document disclosing a fracture treatment tool based on the above-described conventional “plate fixing method”, the following Patent Document 1 can be typically cited. In patent document 1, when the fracture site | part is pressed, the friction which arises between a plate and a bone is made into a problem. This problem has been addressed in the past by bending the shape of the plate to match the contour geometry of the bone appearance. However, bending the plate during the operation is a problem because it is not preferable as a work from the viewpoint of therapeutic measures. Therefore, the invention of Patent Document 1 proposes a spacer disposed between the plate and the bone in order to solve the problem.

  Further, Patent Documents 2 and 3 below are given as conventional techniques related to the present invention.

  Patent Document 2 relates to a fracture joint tool, and in the description of the background art, the “plate fixing method” is described in FIG. 3. In the “plate fixation method” shown in FIG. 3, when a fracture occurs in the ulna, the plate (61) is applied to the outer surface of the fracture site of the ulna and the plate is used, for example, using six screws (62). (61) is fixed to the ulna.

  Patent Document 3 relates to a medical waterproof protector, and discloses a fastener as a means for fixing when a medical waterproof cover is attached and fixed to a patient's arm or leg. This fastener is attached so as to tighten the entire circumference of the arm and leg from the outside of the skin.

JP-T 2009-525155 (paragraphs 0002 to 0006) WO2010 / 005076 (paragraph 0005, FIG. 3) Japanese Patent Laying-Open No. 2005-66301 (FIGS. 5 to 8)

  According to the conventional “plate fixing method”, a bone pad is disposed at the fracture site, and the bone plate is coupled and fixed to the fracture site with a screw member. Since only the screw member is used as the coupling means for attaching the bone pad to the bone, when the plate has a long shape, the screw member is attached to both ends and the middle portion of the plate, and at least four or more It was essential to use a large number of screw members. In order to embed the screw member in the bone, it is necessary to make a screw hole for embedding the screw member in the bone tissue. For this reason, the burden is placed on the bone to be treated, and it is also a problem in terms of rapid bone recovery in fracture treatment. As a result, in the “plate fixation method” which is a surgical treatment, it has been strongly desired to reduce the number of screw members used.

  In view of the above problems, an object of the present invention is to provide a fracture treatment tool that can reduce the number of screw members as much as possible by a plate fixing method, which is a surgical treatment, and can simplify and speed up a treatment operation. There is to do.

  In order to achieve the above object, a fracture treatment device according to the present invention is configured as follows.

A first fracture treatment device (corresponding to claim 1) includes a bone pad disposed along a bone fracture site, a screw member for fixing the bone pad to the bone, and fixing the bone pad. And an annular clip for reinforcement.
In the above fracture treatment device, in the “plate fixation method” of orthopedic surgical treatment, the number of screw members can be reduced as much as possible without reducing the fixation performance. Speeding up can be realized.

The second fracture treatment device (corresponding to claim 2) is constituted by a bone pad plate arranged along the bone fracture site and an annular clip for fixing the bone pad plate to the bone.
In the above fracture treatment tool, in the “plate fixation method” of orthopedic surgical treatment, the fixation force or fixation performance of the annular click is increased, so that the bone pad plate can be boned with only the annular clip without using a screw member. It is possible to firmly attach to the fracture site of the patient, thereby further simplifying treatment and treatment and speeding up healing.

  In the third fracture treatment device (corresponding to claim 3), the screw member is preferably disposed at both ends of the bone pad, and the annular clip is disposed at an intermediate part of the bone pad. It is characterized by. In this configuration, both ends of the bone pad are fixed with screw members, and the middle part is fixed with an annular clip, so that the fixing structure can be simplified and sufficient fixing performance can be maintained. It becomes.

  In the fourth fracture treatment device (corresponding to claim 4), in the above configuration, preferably, the annular clip has a gap, and the annular clip surrounds the bone pad and the bone via the gap. It is characterized by being fitted toward the bone from the outside of the bone pad. In this configuration, the annular clip has the shape of the capital letter “C” of the alphabet and has a shape that can be easily attached to the bone pad and bone.

  In the fifth fracture treatment device (corresponding to claim 5), preferably, at least two annular clips are provided along the longitudinal direction of the bone pad. According to this configuration, it is possible to realize a stable fixing state of the bone pad plate using as few annular clips as possible.

  A sixth fracture treatment device (corresponding to claim 6) is characterized in that, in the above-described configuration, a guide groove for accommodating the annular clip is preferably formed at a surface portion where the annular clip contacts the bone pad. To do. According to this configuration, it is possible to prevent the annular clip from moving in the longitudinal direction of the bone pad or the longitudinal direction of the bone, and it is possible to stably hold the arrangement location of the annular clip at the same location. .

  The seventh fracture treatment device (corresponding to claim 7) is characterized in that, in the above configuration, the curved shape of the annular clip is preferably formed in accordance with the location of the bone to be arranged. According to this configuration, the bone pad can be firmly attached to the bone by the annular clip, and the fixing performance of the bone pad can be improved.

  In the above configuration, the eighth fracture treatment device (corresponding to claim 8) preferably has another annular clip facing the bone from the back side of the bone so as to surround the gap between the annular clips attached from the outside. It is characterized by being fitted. According to this structure, possibility that the annular clip attached from the bone pad and the outside of the bone will come off is reduced as much as possible, and the fixing performance can be improved.

  According to the fracture treatment tool according to the present invention, in the surgical treatment of the plate fixing method by orthopedics, the fixation performance of the bone pad is reinforced by using the annular clip having a specific shape. The number of screw members to be fixed to the bone can be reduced as much as possible. As a result, the operation of the surgical treatment can be simplified and speeded up, the burden on the patient can be reduced, and the healing of the bone can be accelerated. Can do. Furthermore, by improving the fixing performance and the like of the annular clip, it becomes possible to fix only by the annular clip without using a screw member, and further simplify and speed up the surgical operation, and the patient's operation. The burden can be reduced and bone healing can be accelerated.

1 is an exploded perspective view showing a first embodiment of a fracture treatment tool according to the present invention. It is an assembly perspective view which shows the use condition of the fracture treatment tool of 1st Embodiment. It is a top view which shows the use condition of the fracture treatment tool of 1st Embodiment. It is the sectional view on the AA line in FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a figure similar to FIG. 4 which shows 2nd Embodiment of the fracture treatment tool which concerns on this invention.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments (examples) of the present invention will be described below with reference to the accompanying drawings.

  A representative first embodiment of a fracture treatment device according to the present invention will be described with reference to FIGS. In this embodiment, the screw member and the annular clip are used in combination as means for fixing the bone pad to the fracture site of the bone, but the screw member is not an essential member. By increasing the fixing force or fixing performance of the annular clip, the use of the screw member can be omitted.

  As shown in FIG. 1, this fracture treatment tool 10 is formed by connecting a bone pad 12 to a bone 11 and a bone pad 12 arranged so as to touch a required surface portion of the bone 11 where the fracture site 11 </ b> A exists. For example, three screw members (locking screws) 13 for fixing to the bone 11 and the bone pad 12 fixed to the bone 11 are arranged so as to surround the bone 11 and the bone pad 12 integrally. And, for example, two annular clips 14 for reinforcing the fixation state of the bone pad 12 to the bone 11. In FIG. 1, the bone pad plate 12, the three screw members 13, and the two annular clips 14 are shown in a disassembled state in which the mounting positional relationship is properly maintained before assembly. Yes. In FIG. 1, the attachment / assembly relationship is shown by an arrow 15 drawn by a one-dot chain line.

  In the fracture site 11A of the bone 11, there are a crack-like fracture site 11A-1 and bone fragments 11A-2 located on both sides thereof. As the bone 11 having the fracture site 11A, any bone that forms the skeleton of a human body is targeted, but a bone having a certain length is preferable.

  The bone pad 12 has a required length corresponding to the length of the fracture site 11A of the long bone 11 and preferably has a thin plate shape. In the positional relationship shown in FIG. 1, the bone pad 12 is arranged based on a contact or non-contact relationship along the longitudinal direction of the fracture site 11 </ b> A, as shown in FIG. 2. In FIG. 2, illustration of the tissue around the bone 11 is omitted. In actual treatment, the tissue around the fracture site 11A of the bone 11 is incised, the fracture site 11A is exposed, the fracture site 11A-1 is adjusted, and the fracture site 11A is restored to the state before the fracture, Thereafter, the bone pad 12 is placed so as to span the bone fragments 11A-2 on both sides of the fracture site 11A-1. The material of the bone pad 12 is preferably a metal, but any material can be used as long as it has a required strength.

  Further, on the outer surface (upper side in the drawing) of the bone pad 12, a substantially linear groove 12 </ b> A is formed in the width direction of the bone pad 12 in correspondence with the location where each of the two annular clips 14 is disposed. , 12B are formed. The groove shapes of the grooves 12 </ b> A and 12 </ b> B are formed to match the shape of the corresponding annular clip 14. When the two annular clips 14 are attached to the bone rest plate 12, the substantially middle part of each annular clip 14 is disposed while being guided by the grooves 12A and 12B. The shape, number and formation position of the groove are appropriately determined according to the shape, number and mounting position of the annular clip to be used.

  Further, the bone rest plate 12 is formed with holes 12C through which the screw members 13 are inserted at respective locations where the three screw members 13 are attached. The number and formation position of the holes are appropriately determined according to the number of screw members used and the mounting position.

  In addition, when providing the bone pad 12 in the fracture site | part 11A of the bone 11, a spacer member can also be arrange | positioned among them.

  The screw member 13 is a so-called rocking screw. In the “plate fixing method”, the screw member 13 is a well-known means for fixing a plate to a bone. In this embodiment, in order to fix the bone pad 12 to the bone 11, in principle, the three screw members 13 are used, but the number is arbitrary. In this embodiment, the three screw members 13 are arranged in accordance with the shape of the end portions at the positions of both end portions of the bone plate 12, but the arrangement positions of the screw members can be arbitrarily determined.

  The smaller the number of screw members 13 used, the better.

  The annular clip 14 has an annular shape as a whole, and has a shape similar to the capital letter “C” of the alphabet. As a result, the annular clip 14 is formed by a substantially linear portion 14A located at the intermediate portion, a curved portion 14B having a required curved shape located on both sides thereof, and a gap (notch portion) 14C. The gap 14C is formed as a separation portion between both end portions. The length and shape of the linear portion 14A in the annular clip 14, the curved shape of the curved portion 14B, and the length of the gap 14C are appropriately determined according to the site of the bone 11 to be attached. Therefore, with respect to the two annular clips 14 shown in FIGS. 1 and 2, etc., the left annular clip 14 has a relatively small shape, and the right annular clip 14 has a relatively large shape. ing. As shown in FIGS. 1 and 2, each of the two annular clips 14 has a bone pad 12 such that the straight portion 14A is disposed in the grooves 12A, 12B of the bone pad 12 described above. It is attached to the corresponding part. The material of the annular clip 14 is a metal material or a material (resin material or the like) having a similar strength. When using a metal material, for example, it is made by bending a rod-shaped member so that the curved portion 14B is formed.

  When the fracture treatment tool 10 comprising the bone pad plate 12, the three screw members 13, and the two annular clips 14 shown in FIG. 1 is assembled to the bone 11, the use state shown in FIG. 2 is obtained. The usage state of the fracture treatment device 10 will be described with reference to FIGS. 2 and 3 to 5.

  The bone pad 12 is disposed along the longitudinal direction of the fracture site 11A of the reduced bone 11, and three screw members 13 are screwed into the bone 11 and embedded through the three holes 12C at both ends thereof. A bone pad 12 is fixed to the bone 11. Thereafter, two annular clips 14 are attached to the middle portion of the bone pad 12. This order of installation may be reversed. Each annular clip 14 surrounds the bone rest plate 12 and the bone 11 at each placement position, and passes through the gap 14C from the outside of the bone rest plate 12 (upper side in FIGS. 1 and 2) to the bone 11. Fit in. In the state where the fitting is completed, as shown in FIG. 2, the linear portion 14A of each annular clip 14 is housed as guided in the grooves 12A and 12B.

  In this embodiment, as shown in FIG. 3, the bone pad 12 has two screw members 13 disposed at the end portion (right end portion in FIG. 3) having a relatively large area. An end portion (left end portion in FIG. 3) having a small area is fixed to the bone 11 by providing one screw member 13. Each of the two annular clips 14 is disposed at the middle portion of the bone pad plate 12, and as shown in FIG. Arranged based on the mounting structure. As shown in FIG. 4, the large annular clip 14 is disposed so as to integrally surround the bone pad 12 and the bone 11. The ends of both ends of the annular clip 14 are in contact with the surface on the back side of the bone 11. Based on this attachment relationship, the intermediate part of the bone pad plate 12 can be fixed to the bone 11 and the bone pad plate 12 can be prevented from separating from the bone 11. The same applies to the small annular clip 14. Further, as shown in FIG. 5, by using the screw member 13 and the annular clip 14 together, the fixation of the bone pad 12 to the bone 11 based on the screw member 13 can be reinforced by the annular clip 14.

  In the state of use of the fracture treatment device 10 shown in FIGS. 2 to 5, the bone pad 12 is fixed to the bone 11 with the three screw members 13 arranged at both ends of the bone pad 12. The intermediate part of the bone pad 12 is fixed by two annular clips 14 and complements and reinforces the fixing by the screw member 13. As a result, it is possible to omit the screw member for the intermediate portion of the bone pad plate 12 as compared with the conventional “plate fixation method” treatment operation, and to simplify and speed up the work during the operation. it can.

  Next, a second embodiment of a fracture treatment device according to the present invention will be described with reference to FIG. FIG. 6 is a view similar to FIG. 4 and shows a characteristic configuration of the embodiment. The other configuration is the same as the configuration of the first embodiment described above, and elements that are substantially the same as those of the first embodiment are denoted by the same reference numerals. In this embodiment, another annular clip 21 is further arranged from the back side of the bone 11 with respect to the bone clip plate 12 and the annular clip 14 arranged from the outside (front side) of the bone 11. The shape of the annular clip 21 is substantially the same as the annular clip 14 described above. The annular clip 21 is attached so as to be fitted toward the bone 11 from the back side of the bone 11 so as to surround a portion of the gap 14 </ b> C of the annular clip 14. The annular clip 21 is disposed so as to substantially surround the bone 11 and the bone rest plate 12 by surrounding the annular clip 11. According to this configuration, it is possible to reduce the possibility that the annular clip 14 comes off, and to strengthen the fixation by the annular clip 14.

  The configuration of the fracture treatment tool according to the present invention can be changed as follows.

  In the above-described embodiment, the annular clip 14 is manufactured as a separate member from the bone pad plate 12. However, the curved part 14 </ b> B is extended to the side portions on both sides of the bone pad plate 12 so as to extend the bone pad plate. It is also possible to manufacture the annular clip integrally.

  In the first and second embodiments described above, the three screw members 13 and the two annular clips 14 are used together. However, as described above, the number, shape, form, and the like of the annular clips are changed. Accordingly, it is possible to increase the fixing force or fixing performance of the annular clip and to fix the bone pad 12 to the bone 11 with only the annular clip. In this case, for example, it is preferable to change the shape and structure (addition of an auxiliary member for preventing slack, etc.) such as the thickness and the degree of curvature of the annular clip so as to increase the fixing force. According to this example, since it can fix only with a cyclic | annular clip, use of a screw member can be eliminated completely.

  In addition, although “bone fracture” has been described as an object of bone treatment, application examples of the treatment tool are not limited to this.

  The configurations, shapes, sizes, and arrangement relationships described in the above embodiments are merely schematically shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments, and can be modified in various forms without departing from the scope of the technical idea shown in the claims.

  The fracture treatment device according to the present invention is used for a plate fixing method in the surgical treatment of bone by orthopedics.

DESCRIPTION OF SYMBOLS 10 Fracture treatment tool 11 Bone 11A Fracture site 11A-1 Fracture site 11A-2 Bone fragment 12 Bone pad 12A, 12B Groove 12C Hole 13 Screw member 14 Annular clip 14A Linear part 14B Bending part 14C Gap 15 Arrow 21 Annular clip

Claims (8)

  A fracture treatment comprising: a bone rest plate disposed along a bone fracture site; a screw member for fixing the bone rest plate to the bone; and an annular clip for reinforcing the fixation of the bone rest plate. Ingredients.   A fracture treatment tool comprising: a bone rest plate disposed along a bone fracture site; and an annular clip for fixing the bone rest plate to the bone.   The fracture treatment tool according to claim 1, wherein the screw member is disposed at both ends of the bone pad, and the annular clip is disposed at an intermediate part of the bone pad.   The annular clip has a gap, and the annular clip is fitted from the outside of the bone pad plate toward the bone through the gap so as to surround the bone pad plate and the bone. The fracture treatment tool according to any one of claims 1 to 3.   The fracture treatment tool according to any one of claims 1 to 4, wherein at least two of the annular clips are provided along a longitudinal direction of the bone pad.   The fracture treatment tool according to any one of claims 1 to 5, wherein a guide groove for accommodating the annular clip is formed at a surface portion where the annular clip contacts the bone pad.   The fracture treatment tool according to any one of claims 1 to 6, wherein the curved shape of the annular clip is formed in accordance with the location of the bone to be arranged.   The fracture treatment tool according to claim 4, wherein another annular clip is fitted from the back side of the bone toward the bone so as to surround the gap of the annular clip.