JP2019122622A - Surgical instrument - Google Patents

Abstract

To provide a surgical instrument having high operability and reliability.SOLUTION: A surgical instrument 1 includes a tip 11 and a grip 12. The tip is inserted into the body of a patient during a surgical operation, and the grip is gripped by a surgeon during a surgical operation. A metal portion 12A is formed of a rigid material such as stainless steel. At least the tip is provided with a through hole 1A, and in a surgical operation, the tip is abutted against a bone to press the bone.SELECTED DRAWING: Figure 1

Description

  The present invention relates to surgical instruments.

  Conventionally, a medical instrument (a surgical instrument) including a tip portion and a grip portion is known (see, for example, Patent Document 1). The through hole is formed in the medical device described in Patent Document 1. Further, Patent Document 1 describes an example in which the tip end portion is curved.

JP 2017-196539 A

By the way, the medical instrument described in patent document 1 is used for a spinal compression fracture treatment. Moreover, in the medical device described in Patent Document 1, the through hole is used as an injection path for injecting cement into the vertebral body. In particular, in the medical device described in Patent Document 1, the distal end portion is configured to be articulated so that cement can be injected at a desired position in the vertebral body. As a result, in the medical instrument described in Patent Document 1, the configuration of the distal end becomes complicated, and the operability of the distal end decreases (that is, the operation of the distal end becomes complicated). In addition, the reliability of the tip portion is reduced (that is, the tip portion is easily broken).
That is, although a large number of medical instruments used for treatment of spinal compression fractures have been proposed in the past, surgical instruments having high operability and reliability for reducing a bone damaged by, for example, a traffic accident exist. I did not.

  In view of the above problems, the present invention aims to provide a surgical instrument having high operability and reliability.

  One embodiment of the present invention is a surgical instrument comprising a tip and a grip, wherein the tip is constituted by a rigid member, and at least the tip comprises a through hole; Sometimes the tip is a surgical instrument that is abutted against a bone to press the bone.

  In a surgical instrument according to an embodiment of the present invention, a guide wire may be inserted into the through hole at the time of surgery, and the tip may be guided to the bone by the guide wire.

  In the surgical instrument according to one embodiment of the present invention, the tip may include a curved portion.

  In the surgical instrument according to one embodiment of the present invention, at the time of a surgical operation, the tip is inserted into the inside of a patient's body, and pressing a pressed site from the inside of the body toward the outside of the body Good.

  In the surgical instrument according to one embodiment of the present invention, the grip portion may include an identification portion that indicates the bending direction of the bending portion.

  One embodiment of the present invention is a surgical instrument comprising a tip and a grip, wherein the tip is constituted by a rigid member and comprises a curved portion, said surgical tip The tip is a surgical instrument that abuts against the spine to press the spine.

  In the surgical instrument according to one embodiment of the present invention, at the time of a surgical operation, the tip is inserted into the interior of a vertebral body, and the pressing site of the vertebral body is directed from the inside of the vertebral body to the outside of the vertebral body. You may press.

  In the surgical instrument according to an embodiment of the present invention, the curved portion may include a tapered conical portion, and the conical portion may be disposed at the distal end of the curved portion.

  In the surgical instrument according to one embodiment of the present invention, the tip of the conical portion may be chamfered.

  In the surgical instrument according to one embodiment of the present invention, the grip portion may include an identification portion that indicates the bending direction of the bending portion.

  According to this invention, a surgical instrument having high operability and reliability can be provided.

It is sectional drawing which shows an example of a structure of the surgical instrument of 1st Embodiment. It is the enlarged view which looked at the surgical instrument of 1st Embodiment along the central axis line of the through-hole from the upper left side of FIG. It is the enlarged view which looked at the surgical instrument of 1st Embodiment along the central axis of the through-hole from the right side of FIG. It is a figure which shows the application example of the surgical instrument of 1st Embodiment at the time of a surgical operation. It is sectional drawing which shows an example of a structure of the surgical instrument of 2nd Embodiment. It is the enlarged view which looked at the surgical instrument of 2nd Embodiment along the central axis line of the bending part from the upper left side of FIG. It is the enlarged view which looked at the surgical instrument of 2nd Embodiment along the central axis of the straight part from the right side of FIG. It is a figure which shows the application example of the surgical instrument of 2nd Embodiment at the time of a surgical operation.

  Hereinafter, embodiments of the surgical instrument of the present invention will be described with reference to the drawings.

First Embodiment
FIG. 1 is a cross-sectional view showing an example of the configuration of the surgical instrument 1 according to the first embodiment.
In the example shown in FIG. 1, the surgical instrument 1 includes a tip 11 and a grip 12. The tip 11 is inserted inside the patient's body at the time of surgery. The grip 12 is gripped by the surgeon during a surgical operation. The grip portion 12 includes a metal portion 12A and a resin portion 12B. The metal portion 12A is formed of a rigid material such as stainless steel, for example. The resin portion 12B is formed of a resin material that can be easily grasped by a surgeon during a surgical operation.
The metal portion 12A and the tip portion 11 are configured by one member. That is, the tip portion 11 is formed of a rigid material (that is, a non-flexible material), similarly to the metal portion 12A. In addition, the metal portion 12A and the tip portion 11 are provided with the through holes 1A. A known guide wire (not shown) used at the time of surgery is inserted into the through hole 1A.

FIG. 2 is an enlarged view of the surgical instrument 1 of the first embodiment from the upper left side of FIG. 1 along the central axis of the through hole 1A. FIG. 3 is an enlarged view of the surgical instrument 1 of the first embodiment from the right side of FIG. 1 along the central axis of the through hole 1A.
In the example shown in FIGS. 1 to 3, the distal end portion 11 includes a curved portion 11A and a straight portion 11B. The central axis of the straight portion 11B extends in a straight line. The central axis of the curved portion 11A extends in an arc shape. The through hole 1A is formed along the central axis of the curved portion 11A and the straight portion 11B. The curved portion 11A includes a chamfered portion 11A3 that has been chamfered.
The grip portion 12 includes an identification portion 12C1 that indicates the direction in which the bending portion 11A bends (the upper side in FIG. 1). The identification unit 12C1 is colored in a first color such as red, for example. Moreover, the grip part 12 is provided with the identification part 12C2 which shows the direction (lower side of FIG. 1) of the opposite side to the direction which the curved part 11A curves. The identification unit 12C2 is colored in a second color different from the first color such as blue, for example.
In the example shown in FIGS. 1 to 3, the total length M0 of the surgical instrument 1 is, for example, 300 mm. The diameter M1 of the curved portion 11A and the straight portion 11B is, for example, 4 to 5 mm. The length (arc length) M2 of the curved portion 11A is, for example, 20 mm. The amount of warpage M3 of the curved portion 11A is, for example, 3 to 5 mm. The diameter M4 of the through hole 1A is, for example, 2 mm.

FIG. 4 is a view showing an application example of the surgical instrument 1 according to the first embodiment at the time of surgery.
In the example shown in FIG. 4, the surgical instrument 1 is used, for example, to reduce the spine S fractured due to a traffic accident or the like. In detail, it is used, for example, to return the vertebral body V deformed concavely to a convex shape as shown by a broken line in FIG.
At the time of surgery, a guide wire (not shown) is first inserted into, for example, the pedicle. Then, a hole S1 for inserting the tip 11 into the vertebral body V is formed in the spine S by a drill (not shown) guided by a guide wire.
Then, the guide wire is inserted into the through hole 1A of the surgical instrument 1 and the tip 11 of the surgical instrument 1 is guided to the hole S1 of the spine S by the guide wire.
Next, the surgeon who grips the grip portion 12 of the surgical instrument 1 brings the distal end portion 11 of the surgical instrument 1 into contact with the pressed portion V1 of the vertebra V.
Next, the surgeon presses the region to be pressed V1 from the inside of the vertebral body V toward the outside of the vertebral body V (the left side in FIG. 4) by the distal end portion 11 of the surgical instrument 1. As a result, for example, the vertebral body V that has been deformed, for example, in a concave shape due to a traffic accident, is returned to a convex shape (a normal state shown by a solid line in FIG. 4).
In the example shown in FIG. 4, the surgical instrument 1 of the first embodiment is applied to surgery on the spine, but in other examples, the surgical instrument 1 of the first embodiment is a spinal column such as a patella. It may apply to surgery of bones other than.

As described above, the surgical instrument 1 according to the first embodiment includes the distal end portion 11 and the grip portion 12 configured by a rigid member. At the time of surgery, the tip 11 is brought into contact with the bone and presses the bone.
Therefore, according to the surgical instrument 1 of the first embodiment, the operability can be improved more than in the case where the bone is pressed by the medical instrument described in, for example, Patent Document 1 (that is, the surgeon performs surgery It makes the instrument easier to handle) and can improve its reliability (that is, it reduces the risk of failure).

The surgical instrument 1 of the first embodiment is provided with a through hole 1A. At the time of surgery, a guide wire is inserted into the through hole 1A, and the distal end 11 is guided to the bone by the guide wire.
Therefore, according to the surgical instrument 1 of the first embodiment, the operability of the surgical instrument 1 can be improved more than when the guide wire can not be used.

Further, in the surgical instrument 1 of the first embodiment, the tip end portion 11 includes the bending portion 11A. Further, at the time of surgery, the distal end portion 11 is inserted into the inside of the patient's body, and presses, for example, the pressed site V1 from the inside of the body toward the outside of the body.
Therefore, according to the surgical instrument 1 of the first embodiment, the operation of pressing the pressed portion V1 from the inside of the body toward the outside of the body is easier than when the non-curved instrument is used. Can.

Further, in the surgical instrument 1 according to the first embodiment, the grip portion 12 includes an identification portion 12C1 that indicates the direction in which the bending portion 11A bends.
Therefore, according to the surgical instrument 1 of the first embodiment, the surgeon can easily recognize the direction in which the bending portion 11A located inside the patient's body bends, although the direction can not be visually recognized. .

Second Embodiment
The surgical instrument 1 of the second embodiment is configured in the same manner as the surgical instrument 1 of the first embodiment described above, except for the points described below. Therefore, the surgical instrument 1 of the second embodiment can exhibit the same effects as the surgical instrument 1 of the first embodiment described above, except for the points described later.

FIG. 5 is a cross-sectional view showing an example of the configuration of the surgical instrument 1 according to the second embodiment.
In the example shown in FIG. 5, the surgical instrument 1 includes the tip 11 and the grip 12 as in the example shown in FIG. 1. The tip 11 is inserted into the inside of the patient's body at the time of surgery, similar to the tip 11 shown in FIG. The grip 12 is configured in the same manner as the grip 12 shown in FIG.
In the example shown in FIG. 5, the metal part 12A and the tip part 11 are comprised by one member similarly to the example shown in FIG. That is, the tip portion 11 is formed of a rigid material (that is, a non-flexible material), similarly to the metal portion 12A.
In the example shown in FIG. 1, although the metal part 12A and the front end part 11 are provided with the through hole 1A, in the example shown in FIG. 5, the metal part 12A and the front end part 11 are not provided with the through hole.

FIG. 6 is an enlarged view of the surgical instrument 1 of the second embodiment from the upper left side of FIG. 5 along the central axis of the bending portion 11A. 7 is an enlarged view of the surgical instrument 1 according to the second embodiment from the right side of FIG. 5 along the central axis of the straight portion 11B.
In the example shown in FIGS. 5 to 7, the tip end portion 11 includes the curved portion 11A and the straight portion 11B, as in the example shown in FIGS. 1 to 3. The central axis of the straight portion 11B extends in a straight line. The central axis of the curved portion 11A extends in an arc shape. The curved portion 11A includes a tapered conical portion 11A1 and a cylindrical portion 11A2 having a substantially uniform thickness. A chamfering process is applied to the tip end portion 11A11 of the conical portion 11A1, and the tip end portion 11A11 is formed, for example, in a spherical shape.
In the example shown in FIGS. 5 to 7, as in the example shown in FIGS. 1 to 3, the identification part 12C1 of the grip part 12 shows the direction in which the bending part 11A bends (upper side in FIG. 5). The identification unit 12C2 indicates the direction opposite to the direction in which the bending portion 11A bends (the lower side in FIG. 5).
In the example shown in FIGS. 5-7, the full length M0 of the surgical instrument 1 is 300 mm, for example similarly to the example shown in FIGS. The diameter M1 of the cylindrical portion 11A2 of the curved portion 11A and the straight portion 11B is, for example, 4 to 5 mm. The total length (arc length) M2 of the conical portion 11A1 and the cylindrical portion 11A2 is, for example, 20 mm. The amount M3 of warpage of the curved portion 11A is, for example, 3 to 5 mm, as in the example shown in FIGS. The length M5 of the conical portion 11A1 is, for example, 3 to 5 mm.

FIG. 8 is a view showing an application example of the surgical instrument 1 of the second embodiment at the time of surgery.
In the example shown in FIG. 8, as in the example shown in FIG. 4, the surgical instrument 1 is used to reduce the spine S fractured due to, for example, a traffic accident. In detail, it is used, for example, to return the vertebral body V deformed concavely to a convex shape as shown by a broken line in FIG.
At the time of surgery, a guide wire (not shown) is first inserted into, for example, the pedicle. Then, a hole S1 for inserting the tip 11 into the vertebral body V is formed in the spine S by a drill (not shown) guided by a guide wire.
The guidewire is then removed from inside the patient's body.
Then, the surgeon who grips the grip portion 12 of the surgical instrument 1 inserts the distal end portion 11 of the surgical instrument 1 into the hole S1 of the spinal column S and abuts on the pressed portion V1 of the vertebral body V. As described above, in the surgical instrument 1 according to the second embodiment, since the tapered conical portion 11A1 is disposed at the distal end of the curved portion 11A of the distal end portion 11, the surgeon takes the distal end portion 11 It can be easily inserted into the hole S1 of the spinal column S.
Next, the surgeon presses the region to be pressed V1 from the inside of the vertebral body V toward the outside of the vertebral body V (the left side in FIG. 8) by the distal end portion 11 of the surgical instrument 1. As a result, for example, the vertebral body V that has been deformed, for example, in a concave shape due to a traffic accident or the like is returned to a convex shape (a normal state shown by a solid line in FIG. 8).

As described above, the surgical instrument 1 according to the second embodiment includes the distal end portion 11 formed of a rigid member and having the bending portion 11A, and the grip portion 12. At the time of surgery, the tip 11 is brought into contact with the bone and presses the bone.
Therefore, according to the surgical instrument 1 of the second embodiment, the operability can be improved more than when pressing the spine with the medical instrument described in, for example, Patent Document 1 (that is, the surgeon performs the surgical operation It makes the instrument easier to handle) and can improve its reliability (that is, it reduces the risk of failure).

Further, in the surgical instrument 1 according to the second embodiment, the tip 11 is inserted into the vertebral body V of the patient at the time of surgery, and for example, the pressed portion V1 is from the inside of the vertebral body V Press outwards.
Therefore, according to the surgical instrument 1 of the second embodiment, the pressed portion V1 from the inside of the vertebral body V to the vertebral body than when the pressed portion V1 of the vertebral body V is pressed by the uncurved tool It is possible to facilitate the pressing operation toward the outside of V.

Further, in the surgical instrument 1 according to the second embodiment, as described above, the tapered conical portion 11A1 is disposed at the tip of the curved portion 11A of the distal end portion 11.
Therefore, according to the surgical instrument 1 of the second embodiment, the surgeon can easily insert the distal end portion 11 into the hole S1 of the spine S.

Further, in the surgical instrument 1 of the second embodiment, as described above, the forefront portion 11A11 of the conical portion 11A1 is chamfered.
Therefore, according to the surgical instrument 1 of the second embodiment, the conical portion 11A1 can suppress the possibility of the spine S or the like being damaged.

Further, in the surgical instrument 1 according to the second embodiment, the grip portion 12 includes an identification portion 12C1 that indicates the direction in which the bending portion 11A bends.
Therefore, according to the surgical instrument 1 of the second embodiment, the surgeon can easily recognize the direction in which the bending portion 11A located inside the vertebra V bends, although the direction can not be visually recognized. .

  As mentioned above, although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. . You may combine the structure as described in each embodiment mentioned above.

DESCRIPTION OF SYMBOLS 1 ... Surgical instrument, 11 ... Tip part, 11A ... Curved part, 11A 1 ... Conical part, 11A 11 ... Cutting edge part, 11A 2 ... Cylindrical part, 11A 3 ... Chamfered processing part, 11B ... Straight part, 12 ... Grip part, 12A: metal part, 12B: resin part, 12C1: identification part, 12C2: identification part, 1A: penetration hole, S: spinal column, S1: hole, V: vertebral body, V1: pressed site

Claims (10)

A surgical instrument comprising a tip and a grip, the surgical instrument comprising:
The tip portion is constituted by a rigid member,
At least the tip is provided with a through hole,
At the time of surgery, the tip is pressed against the bone to press the bone
Surgical instruments. At the time of surgery, a guide wire is inserted into the through hole and the tip is guided to the bone by the guide wire.
The surgical instrument of claim 1. The tip comprises a bend.
The surgical instrument according to claim 2. At the time of surgery, the tip is inserted into the inside of the patient's body, and presses the pressed site from the inside of the body toward the outside of the body.
The surgical instrument according to claim 3. The grip portion includes an identification portion that indicates a direction in which the bending portion bends.
The surgical instrument according to claim 3 or 4. A surgical instrument comprising a tip and a grip, the surgical instrument comprising:
The tip portion is constituted by a rigid member, and includes a curved portion,
At the time of surgery, the tip is brought into contact with the spine to press the spine.
Surgical instruments. At the time of surgery, the tip is inserted into the interior of a vertebral body, and presses the pressed portion of the vertebral body from the inside of the vertebral body toward the outside of the vertebral body.
The surgical instrument according to claim 6. The curved portion comprises a tapered cone.
The conical portion is disposed at the tip of the curved portion,
The surgical instrument according to claim 6 or 7. The front end of the conical portion is chamfered.
A surgical instrument according to claim 8. The grip portion includes an identification portion that indicates a direction in which the bending portion bends.
The surgical instrument according to any one of claims 6-9.

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