JP2010011929A - Suture instrument for bone graft - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily join a bone prosthetic material to an autologous bone in a suture instrument for bone graft. <P>SOLUTION: This suture instrument for bone graft includes suture threads 1a and 1b made of two biocompatible materials, and two hard portions 1c disposed at both ends of the suture threads 1a and 1b. This constitution can facilitate operation for passing the suture threads 1a and 1b through through-holes in the bone prosthetic material and the autologous bone, eliminate complicated work for passing a suture needle while adjusting the positions of the bone prosthetic material and the autologous bone in the body, and reduce the burden on a doctor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bone graft suturing device.

  Conventionally, as an operation to treat diseases caused by compression of the spinal cord, a bone filling material made of artificial bone in the gap between the vertebral arch, which is the posterior part of the spinal canal surrounding the spinal cord, is cut vertically. A laminoplasty operation is performed in which the spinal cord is decompressed by expanding the spinal canal (see, for example, Non-Patent Document 1).

  In such a laminoplasty operation, in order to fix and transplant the bone grafting material between vertebral arches that are autologous bones, a through hole having a diameter of about 2 mm is provided on the cut surface of the vertebral arch. A similar through hole is also provided in the bone prosthetic material, and the bone prosthetic material is fastened to the vertebral arch by tying the bone prosthetic material inserted into the incision and each through hole of the vertebral arch through sutures. At this time, in order to increase the fixing force of the bone grafting material and prevent its position and orientation from deviating, the two sutures are fastened in a diagonal manner on the bone grafting material, and are fastened in a so-called plowed shape. Yes.

Naruo Orthopedic Hospital web page, Hakuzan Communication, No. 36, Cervical Surgery 2, [Search May 2008], Internet <URL: http://www.naruoseikei.com/hakuzan/hakuzan36.pdf >

  However, it is difficult to pass a suture thread through a small through hole provided in a wet autologous bone, and in the conventional method, a bone prosthetic material is inserted between the incised vertebral arches and then arranged side by side. Since the surgical needle and suture thread are passed through the three through-holes, it is necessary to work while making fine adjustments in the body so that the position of the small opening matches the surface where the vertebral arch and bone grafting material meet, which is a heavy burden on the doctor. It has become. In addition, due to the complexity of the operation, inconveniences such as the suture being detached from the needle during the operation tend to occur, which hinders the progress of the operation.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a bone graft suturing tool capable of easily fastening a bone grafting material and an autologous bone.

In order to achieve the above object, the present invention provides the following means.
The present invention provides a bone graft suturing device comprising a suture composed of a plurality of biocompatible materials and two needle-like hard portions arranged at intervals in the longitudinal direction of the suture.

  According to the present invention, the bone graft suturing device is provided with two needle-like hard portions spaced apart in the longitudinal direction thereof, and using each hard portion in the same manner as a surgical needle, The bone grafting suture tool can be sutured from two locations. One hard part of such a bone grafting suture tool is passed through the through hole of the bone filling material in advance outside the body so that the hard parts are arranged on both sides of the bone filling material. The hard portions arranged on both sides of the bone grafting material are passed from the cut surface side to the through holes of the cut vertebral arch while leaving the bone grafting material outside the body. Then, a bone filling material is inserted between the vertebral arches in the body, and a plurality of sutures extending outward from each through hole of the vertebral arch are branched up and down to tie each suture in a brushed shape on the bone filling material. Then, the bone grafting material can be fastened and transplanted to the incision portion of the vertebral arch using the bone grafting suture tool.

  In this case, according to the present invention, it is only necessary to pass the hard portion separately through the bone filling material and each through hole of the vertebral arch, so that the bone filling material and the small through hole of the vertebral arch can be aligned in the body. The complicated operation of passing the surgical needle while adjusting the position of the material is eliminated, and the suture thread can be easily passed through the bone grafting material and the vertebral arch.

Therefore, by using the bone grafting suture tool, it is possible to reduce the troublesome operation in the operation and the burden on the doctor, and to easily fasten the bone filling material and the vertebral arch.
In the said invention, the said hard part may be arrange | positioned at the both ends of the said suture.
In the above invention, the number of sutures may be two.

In the above invention, the sutures may have different colors.
If there are multiple similar sutures in the surgical site and some of the sutures are not visible due to tissue, etc., it is necessary to check by pulling a part of the sutures to determine the sutures. Don't be. However, according to the present invention, the colors of the sutures constituting the bone graft suturing device are made different from each other, so that even when the suture is hidden in the bone filling material or the own bone and the middle of the suture cannot be seen, A plurality of sutures can be discriminated, and the sutures of the same color need only be tied together at the time of fastening, so that the confusingness during the operation can be eliminated.

In the above invention, the hard portion may be a surgical needle.
By doing in this way, the operation which lets a hard part pass to the small through-hole provided in the bone grafting material or the own bone can be made easy.

Moreover, in the said invention, the said hard part may harden | cure a part of said suture with an adhesive agent, and may be comprised.
In this way, the suture can be guided by using the hard portion instead of the surgical needle, so that the surgical needle becomes unnecessary, and there is no inconvenience that the suture comes out of the surgical needle. In addition, the hard part can be given moderate hardness and its shape can be maintained stably. The shape such as the height can be easily changed.

  When the hard part is a surgical needle, the maximum diameter of the bone graft suturing device is the combined width of the surgical needle and two sutures. The hard part is hardened by hardening the suture with an adhesive. By forming it, the diameter can be reduced to the width of two suture threads, and even a small through-hole can pass the hard part with a sufficient space in the radial direction.

Moreover, in the said invention, it is preferable that the said hard part is about 20 mm in length.
By doing so, the bone prosthetic material and the hard part have the same length, and the operation of passing the hard part through the through hole of the bone prosthetic material becomes easy.

  According to the present invention, the bone prosthetic material and the autologous bone can be easily fastened.

A bone graft suturing device 1 according to an embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 1, the bone graft suturing device 1 according to this embodiment includes two suture threads 1 a and 1 b and two needle-like hard portions disposed at both ends of the suture threads 1 a and 1 b. 1c. The sutures 1a and 1b have different colors. Further, the hard portion 1c is formed, for example, by bonding and hardening the tips of the sutures 1a and 1b using a photo-curing resin, an epoxy-based, polyurethane-based, or silicon-based adhesive.

The operation of the bone graft suturing device 1 according to this embodiment configured as described above will be described below.
In order to fasten the bone prosthetic material A to the vertebral arch B that is an autologous bone using the bone grafting sewing tool 1 according to the present embodiment, as shown in FIG. An incision is made in the longitudinal direction at the central position in the vertical direction, and a small through hole D for passing the bone graft suturing tool 1 is provided in each cut surface C. Further, the bone grafting material A is also provided with a through hole E for allowing the bone graft suturing device 1 to pass therethrough.

  In advance, one of the hard portions 1c is passed through the through hole E of the bone grafting material A in advance so that the hard portions 1c are disposed on both sides thereof. With the bone grafting material A placed outside the body, each hard portion 1c is passed through each through hole D of the vertebral arch B from the cut surface C side, and then the bone grafting material A is inserted into the incision of the vertebral arch B. To do. Then, as shown in FIG. 3, the two suture threads 1 a and 1 b that protrude outward from each through hole D of the vertebral arch B are vertically branched so as to cross each other on the bone grafting material A. When the suture threads 1a and 1b are tied together, the bone grafting material A can be fastened to the vertebral arch B and transplanted by the bone grafting suture tool 1.

  As described above, according to the bone graft suturing device 1 according to the present embodiment, the hard portion 1c can be separately passed through the through holes D and E of the vertebral arch B and the bone grafting material A. Therefore, it is not necessary to perform the complicated operation of passing the surgical needle through the through holes D and E while aligning the through holes D and E in the body, and each penetration of the vertebra B and the bone prosthesis A can be easily performed as compared with the conventional method. There is an advantage that the suture threads 1a and 1b can be passed through the holes D and E. In addition, there is an advantage that the nurse can omit the front of the doctor by passing it through the one hard portion 1c to the through hole E of the bone grafting material A in advance.

  In addition, according to the present embodiment, both ends of the sutures 1a and 1b are hardened with an adhesive, so that the hard portion 1c is appropriately hardened to keep its shape stable, and the hard portion 1c is used as a surgical needle. The sutures 1a and 1b can be guided by operating in the same manner. At the same time, there is an advantage that the surgical needle is not required and there is no inconvenience that the suture thread is removed from the surgical needle during the operation.

  When the surgical needle is used, the maximum value of the diameter of the bone graft suturing device 1 is the combined width of the surgical needle and the two suture threads 1a and 1b. According to this embodiment, the bone graft suture is used. The diameter of the tool 1 can be reduced to the combined width of the two sutures 1a and 1b, and even the small through holes D and E can pass the hard part 1c with a sufficient space in the radial direction. There are advantages.

  Moreover, when forming the hard part 1c, shapes, such as the length and thickness, can be changed, or the hardness can be changed with the kind of adhesive agent. Further, for example, by using a biological material such as a sealing agent or fibrin glue or an adhesive absorbed by the living body, the influence on the living body can be reduced, and the hard portion 1c can be left in the body without being excised.

  In addition, when the two sutures 1a and 1b are the same color, the discrimination between the suture 1a and the suture 1b existing in the surgical site is confused. However, by making the colors of the sutures 1a and 1b different from each other, Easy to distinguish. In addition, since the doctor only has to tie the sutures 1a and 1b of the same color when fastening, the operation becomes easy.

In the present embodiment, the hard portion is configured by curing both ends of the suture with an adhesive. However, instead of this, a surgical needle may be used.
By doing in this way, operation which passes the hard part 1c through the through-holes D and E can be made easy.

Moreover, in this embodiment, it is preferable that the said hard part is about 20 mm in length.
By doing in this way, the hard part 1c becomes comparable length as the bone grafting material A, and the operation which lets the hard part 1c pass to the through-hole E of the bone grafting material A becomes easy.

1 is an overall configuration diagram showing a bone graft suturing device according to an embodiment of the present invention. It is a figure which shows the process of fastening a bone prosthetic material to a vertebral arch using the suture tool for bone transplants. It is a figure which shows the time of completion | finish of a fastening of a bone substitute material and a vertebral arch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bone grafting suturing tool 1a Suture 1b Suture 1c Hard part A Bone prosthesis B B vertebra C Cut surface D Puncture of vertebral arch E

Claims (7)

  A bone graft suturing device comprising: a suture made of a plurality of biocompatible materials; and two needle-like hard portions arranged at intervals in the longitudinal direction of the suture.   The bone graft suturing device according to claim 1, wherein the hard portions are arranged at both ends of the suture thread.   The bone graft suturing device according to claim 1 or 2, wherein the number of the sutures is two.   The bone graft suturing device according to any one of claims 1 to 3, wherein the sutures have different colors.   The bone graft suturing device according to any one of claims 1 to 4, wherein the hard portion is a surgical needle.   The bone graft suturing device according to any one of claims 1 to 5, wherein the hard portion is formed by curing a part of the suture with an adhesive.   The bone graft suturing device according to any one of claims 1 to 6, wherein the hard portion has a length of about 20 mm.

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