JP2011212179A - Template for inserting guide pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a template for inserting a guide pin capable of measuring a correct inserting point and an inserting angle before inserting the guide pin in a bone inside, and easily inserting the guide pin at the correct position and angle in the bone without giving heavy burden to a patient.SOLUTION: The template 1 for inserting the guide pin which enables a guide pin used for guiding when an osteosynthesis implant is inserted in a bone inside inserted at a correct position with a correct angle in the bone inside beforehand, includes a rod-like standard member 2 positioned along the bone in the longitudinal direction, a rod-like angle display member 3 connected to the standard member 2 with one end for showing the predetermined angle to the standard member 2, and a rod-like inserting guide member 4 which protrudes oppositely to the angle display member 3 from the one end of the angle display member 3 and detects the position when the guide pin is inserted.

Description

  The present invention relates to guide pin insertion for inserting a guide pin for use as a guide when inserting an osteosynthesis implant into bone in the treatment of various fractures in advance at an appropriate position and angle of the fracture site. About templates.

  In the treatment of a femoral neck fracture or the like, an osteosynthesis implant is inserted into a bone, and the fractured portion is fixed and reinforced by fixing in the inserted state. Specifically, first, as shown in FIG. 16A, the skin near the upper end of the diaphysis 10 is incised from the side of the human body, and the angle guide 11 is laterally inserted through the incision. It installs in the predetermined position of the upper end part. From this state, while observing the X-ray irradiation image, while rotating the guide pin 13 having a male screw portion at the tip from the insertion hole 12 of the angle guide 11 by a hand drill or the like, a predetermined inside of the bone head 14 is obtained. Screw into position.

  Next, the angle guide 11 is removed while the guide pin 13 is inserted. And as shown in FIG.16 (b), the lag screw 15 (osseous implant) which has an external thread part in a front-end | tip part is provided in the axial support hole 16a of the tube plate 16 for fixing to the side of the diaphysis part 10. As shown in FIG. Pass through. The lag screw 15 has a diameter larger than that of the guide pin 13 and is formed in a cylindrical shape so that the guide pin 13 can be passed through the lag screw 15. Further, the tube plate 16 includes a substantially plate-shaped main body portion 16b and a shaft support portion 16c that supports the lag screw 15, and an angle between the extending direction of the main body portion 16b and the extending direction of the shaft support portion 16c. For example, θ is set to 135 degrees and 145 degrees in advance.

  Next, the rear end portion of the guide pin 13 that is still in the bone is inserted from the insertion hole 15a at the front end of the lag screw 15, and the lag screw 15 is pushed toward the front end portion of the guide pin 13, Feed to a predetermined position. Then, the lag screw 15 is screwed in using the wrench 17 until the tip of the lag screw 15 reaches a predetermined position in the bone head 14. And the guide pin 13 is removed with the lag screw 15 screwed in.

Thereafter, as shown in FIG. 16C, the impactor 18 as a pushing tool is used to insert the shaft support portion 16 c of the tube plate 16 into the bone, and the main body portion 16 b comes into close contact with the diaphyseal portion 10. Until the tube plate 16 is pushed in. In this state, as shown in FIG. 16 (d), the screw 19 is inserted into the predetermined shaft support hole 16a and the mounting hole 16d of the main body portion 16b, and the tube plate 16 and the lag screw 15 are firmly fixed. Finally, the incised skin is sutured to complete a series of treatments. According to these procedures, the bone head 14
Is fixed to the diaphysis 10 and reinforced, and the fracture can be appropriately joined.

  Here, as described above, since the angle θ between the extending direction of the main body portion 16b of the tube plate 16 and the extending direction of the shaft support portion 16c is determined in advance, the guide pin 13 for guiding the lag screw 15 is determined. The angle at which the length direction when the guide pin 13 is inserted and the direction of the bone axis of the diaphysis 10 exactly matches the angle θ, and the guide pin 13 passes through the planned insertion position of the bone head 14. In addition, it is necessary to accurately insert the guide pin 13 at a predetermined angle from a predetermined insertion point.

JP 2003-339727 A

  However, in the above-described treatment, the guide pin 13 must be inserted relying on intuition and experience while looking at the X-ray irradiation image. Therefore, it is extremely difficult to accurately insert the guide pin 13 at a time. There's a problem. In addition, the guide pin 13 is inserted into the bone using the angle guide 11. In this insertion process, the guide pin 13 is not noticed that the angle guide 11 installed on the surface of the diaphysis 10 is inclined, and the guide pin 13 There was also a problem of continuing the insertion work.

  As a result of the above problems, the guide pin 13 often deviates from the planned insertion position of the bone head 14 or from the angle θ. In such a case, the guide pin 13 must be removed once and then reinserted. Therefore, there is a problem that an excessive burden is imposed on the patient. Furthermore, since it is necessary to insert the angle guide 11 into the body before the guide pin 13 is inserted, a wide area of the patient's skin must be incised, which places a heavy burden on the patient and a large surgical mark. There was also a problem of remaining.

  The present invention has been made to solve such a problem, and it is possible to accurately determine the proper insertion point and insertion angle before inserting the guide pin into the bone, which places a heavy burden on the patient. It is an object of the present invention to provide a guide pin insertion template in which a guide pin can be easily inserted at an appropriate position and angle in the bone without giving.

  The object of the present invention is to insert a guide pin, which is used as a guide when inserting an osteosynthesis implant into a bone, in advance at an appropriate position at an appropriate angle inside the bone. A template, a rod-shaped reference member disposed along the length direction of the bone, a rod-shaped angle display member having one end connected to the reference member and indicating a predetermined angle with respect to the reference member; The guide pin insertion template includes a rod-shaped insertion guide member that protrudes from the one end portion of the angle display member to the opposite side of the angle display member and serves as a register when inserting the guide pin.

  In the guide pin insertion template, the reference member, the angle display member, and the insertion guide member may be formed of a metal material different from a metal material that forms the guide pin inserted into the bone. preferable.

  The reference member, the angle display member, and the insertion guide member are preferably made of a titanium alloy.

  Moreover, it is preferable that the said angle display member is equipped with the implant selection means for the size confirmation of the osteosynthesis implant inserted in the inside of a bone.

  Moreover, it is preferable that the said implant selection means is an uneven | corrugated | grooved part formed in the side edge of the said angle display member.

  Moreover, it is preferable to provide the rod-shaped collar part which protrudes in the opposite side to the said reference member from the said one end part of the said angle display member.

  Moreover, it is preferable that the said angle display member is provided with the opening window extended in the direction parallel to the axis line of the said insertion guide member.

  According to the present invention, before inserting the guide pin into the bone, the proper insertion point and insertion angle can be obtained accurately, and the proper position and angle within the bone can be obtained without imposing a heavy burden on the patient. A guide pin insertion template in which a guide pin can be easily inserted can be provided.

It is a perspective view which shows the template for guide pin insertion which concerns on this invention. It is a top view of the template for guide pin insertion shown in FIG. It is a side view of the template for guide pin insertion seen from the arrow A direction in FIG. It is a schematic block diagram which shows the use condition of the template for guide pin insertion shown in FIG. It is explanatory drawing which shows the marking given on the human body skin when performing a preoperative plan using the template for guide pin insertion shown in FIG. It is explanatory drawing which shows the marking given on the human body skin when performing a preoperative plan using the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is a principal part enlarged plan view which shows the modification of the template for guide pin insertion shown in FIG. It is explanatory drawing which shows the insertion process of the conventional guide pin and osteosynthesis implant.

  Hereinafter, a guide pin insertion template according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a guide pin insertion template 1 according to the present invention, and FIG. 2 is a plan view thereof. 3 is a side view when viewed from the direction of arrow A in FIG. 2, and FIG. 4 is a schematic configuration diagram showing a usage state of the guide pin insertion template 1. As shown in FIG.

  The guide pin insertion template 1 is used to insert a guide pin 13 used as a guide when inserting an osteosynthesis implant into a bone in advance at an appropriate position at an appropriate angle inside the bone. As shown in FIGS. 1 to 4, the reference member 2, the angle display member 3, and the insertion guide member 4 are provided.

  The reference member 2 is a plate-like rod-shaped member disposed along the length direction of the bone, and is formed from a metal material. Further, side hole position confirmation means 21 is formed on one side edge 2 a along the longitudinal direction of the reference member 2. The side hole position confirmation means 21 includes a plurality of convex portions 21a to 21d protruding from the reference member 2, and each convex portion 21a to 21d is in an osteosynthesis implant (tube plate 16) fixed to the bone. It corresponds to the position of the mounting hole for screw insertion.

  The angle display member 3 is a plate-like rod-like member having one end connected to the reference member 2 and showing a predetermined angle with respect to the reference member 2, and is formed of a metal material. The angle of the angle display member 3 with respect to the reference member 2 is an angle corresponding to the angle formed by the tube plate 16 fixed to the bone and the lag screw 15 inserted and installed in the shaft support portion 16c of the tube plate 16. Is set to The angle display member 3 has an opening window 31 as shown in the figure. The opening window 31 is formed to extend in a direction parallel to an axis Z1 of the insertion guide member 4 described later. In addition, side edges constituting the opening window 31 and both side edges 31a and 31b along the longitudinal direction of the angle display member 3 are configured to be parallel to each other. Further, these side edges 31a and 31b are configured to be parallel to the axis Z2 in the longitudinal direction of the angle display member 3. Implant selection means 32 for confirming the size of the osteosynthesis implant (lag screw 15) inserted into the bone is provided at the distal end of the angle display member 3. The implant selection means 32 is configured by an uneven portion formed on the side edge of the angle display member 3. The concavo-convex portions are arranged in this order from the most distal end side of the angle display member 3 in the order of a convex portion 32a indicating an L size osteosynthesis implant (lag screw 15), a concave portion 32b indicating an M size, and a convex portion 32c indicating an S size. L, M, and S are engraved in the vicinity of each convex portion and concave portion. These markings may be displayed in any manner as long as the size of the osteosynthesis implant (lag screw 15) can be identified. For example, the markings may be large, medium, small, or 1 , 2 and 3 may be displayed.

  The insertion guide member 4 is a plate-like rod-like member that serves as a register when inserting the guide pin 13, and is configured to protrude from one end of the angle display member 3 to the opposite side of the angle display member 3. Yes. The insertion guide member 4 is also made of a metal material. The longitudinal center axis Z1 of the rod-shaped insertion guide member 4 and the longitudinal center axis Z2 of the opening window 31 formed in the angle display member 3 are configured to be parallel to each other.

  The reference member 2, the angle display member 3, and the insertion guide member 4 described above are formed of a metal material, but are formed of a metal material different from the metal material forming the guide pin 13 inserted into the bone. Is preferred. In particular, it is preferable to form the guide pin 13 from a metal material having a specific gravity lighter than the specific gravity of the metal material. In general, since the guide pin 13 is made of stainless steel, the reference member 2, the angle display member 3, and the insertion guide member 4 are preferably made of titanium alloy or aluminum. The material for forming the reference member 2, the angle display member 3, and the insertion guide member 4 is preferably a metal material from the viewpoint of X-ray permeability, but sterilization treatment such as autoclave sterilization, gas sterilization, radiation sterilization, and plasma sterilization. It is also possible to form with a resin that can be used. When resin or the like is used, X-rays pass through the reference member 2, the angle display member 3, and the insertion guide member 4, and therefore, those containing metal powder such as barium sulfate and bismuth oxide are preferable.

  In addition, various methods can be adopted to manufacture the above-described guide pin insertion template 1. For example, a plate-like titanium alloy plate is formed by wire cutting, electric discharge machining, a machining center, or the like. Can be manufactured by integrally cutting the shape including the reference member 2, the angle display member 3, and the insertion guide member 4. Alternatively, each of the reference member 2, the angle display member 3, and the insertion guide member 4 may be formed separately from a plate-shaped titanium alloy plate, and each member may be assembled by welding or the like. Further, when the guide pin insertion template 1 is formed from a single metal plate, the longitudinal central axis Z1 of the insertion guide member 4 described above coincides with the longitudinal central axis Z2 of the opening window 31. It will be. In this embodiment, the guide pin insertion template 1 is formed by integrally cutting a shape including the reference member 2, the angle display member 3, and the insertion guide member 4 from a single metal plate. Yes. Moreover, the suitable thickness range of the template 1 for guide pin insertion is 1 mm-5 mm, when forming a metal material as a raw material. In the case of 5 mm or more, there is a concern about the influence on the X-ray permeability and the increase in the total weight of the guide pin insertion template 1, and in the case of 1 mm or less, there is a concern about strength problems and warpage during processing. However, the present invention is not limited to these and can be set as appropriate. Moreover, when forming resin as a raw material, 3 mm-10 mm are suitable. In the case of 3 mm or less, there is a concern about the problem of strength, but it can be appropriately set depending on the material used. If it is 10 mm or more, it is sufficient in terms of strength, but an increase in the overall weight is a concern. However, this can also be set as appropriate depending on the material used.

  Next, a method of using the guide pin insertion template 1 according to the present embodiment configured as described above will be described by taking a case of treating a femoral neck fracture as an example. In general, in the case of a femoral neck fracture, as described above, the bone head 14 is inserted into the bone head 14 shown in FIG. The treatment of fixing and joining to the upper end of 10 is performed. Therefore, in order to accurately insert the lag screw 15 into the bone head, it is necessary to insert the guide pin 13 at an appropriate position and angle in advance.

  First, a method of using the guide pin insertion template 1 at the time of preoperative planning before inserting the guide pins 13 will be described. First, the guide pin insertion template 1 is placed from above the skin in front of the fracture of the patient's femoral neck. In this state, X-rays are irradiated from the front of the patient, and the obtained front X-ray irradiation image is confirmed. Here, FIG. 4 corresponds to a forward X-ray irradiation image viewed from the front of the patient. Since the guide pin insertion template 1 is formed of a metal material, the guide pin insertion template 1 is displayed on the front X-ray irradiation image.

  Next, the position of the guide pin insertion template 1 is adjusted while viewing the front X-ray irradiation image. Specifically, the side edge 10a on the outer side of the diaphysis 10 projected on the X-ray irradiation image and the other side edge 2b of the reference member 2 of the guide pin insertion template 1 are overlapped with each other at an angle. The guide pin insertion template 1 is arranged so that the central axis Z2 of the display member 3 (the central axis of the opening window 31) and the position where the guide pin 13 is to be inserted overlap.

  While maintaining this state, marking M1 along the other side edge 2b of the reference member 2 is applied on the skin, and marking M2 along the central axis Z2 of the angle display member 3 is applied on the skin. Similarly, starting from the positions of the convex portions 21a to 21d as the side hole position confirmation means 21, a marking M3 parallel to the protruding direction of the convex portions 21a to 21d is applied on the skin. Furthermore, the marking from the position of each convex part 21a-21d is started from the intersection of marking line M1 along the other side edge 2b of the reference member 2 and marking line M2 along the central axis Z2 of the angle display member 3. A marking M4 parallel to the line M3 is applied on the skin. Next, X-ray irradiation is performed from the side of the patient to obtain a side X-ray irradiation image, and using this side X-ray irradiation image, the position of the central axis in the longitudinal direction of the diaphysis is confirmed. A marking M5 along the central axis is applied on the skin. The state where the markings M1 to M5 are applied is shown in FIGS.

  Here, the range indicated by B in FIGS. 5 and 6 (the range defined between the marking M3 and the marking M4 that is provided on the most knee side among the plurality of markings M3) is the osteosynthesis implant. This is a range necessary for installation, and on the marking M5 shown in FIG. 6, the center of this range B is the starting point of skin incision. Since soft tissue exists between the bone and the body surface, and this soft tissue is easy to stretch, the skin incision starting from the starting point has its relative position with respect to the diaphyseal part 10 due to the elongation of the soft tissue. Can be changed. Therefore, even if the incision length of the skin incision is made as small as possible, the insertion of the guide pin 13 and the installation of the osteosynthesis implant can be performed without any problem.

  Next, while viewing the front X-ray irradiation image again, the outer side edge 10a of the femur projected on the X-ray irradiation image, and the other side edge 2b of the reference member 2 of the guide pin insertion template 1 The guide pin insertion template 1 is arranged so that the central axis Z2 of the angle display member 3 (the central axis of the opening window 31) overlaps with the position where the guide pin 13 is to be inserted. To do. Then, a skin incision having a predetermined length starting from the start point is formed.

  Thereafter, the guide pin 13 is inserted through the skin incision while viewing the front X-ray irradiation image and the side X-ray irradiation image. At the time of insertion, the insertion guide member 4 of the guide pin insertion template 1 and the guide pin 13 are inserted so that the insertion work proceeds while the guide pin 13 contacts the bone. The insertion operation is advanced so that the guide pin 13 overlaps both the center axis Z2 of the third opening window 31 and the insertion guide member 4.

  If it can be confirmed from the X-ray irradiation image that the tip of the guide pin 13 has reached the predetermined position, the insertion operation of the guide pin 13 is completed. Thereafter, the size of the osteosynthesis implant (lag screw 15) to be inserted into the bone from the position of the distal end portion of the guide pin 13 with respect to the implant selecting means 32 formed at the distal end portion of the angle display member 3 is confirmed, and a suitable implant (lag The screw 15) is selected.

  After that, as shown in FIG. 16B, the lag screw 15 is inserted from the rear end portion of the guide pin 13 that is still in the bone, and is pushed toward the front end portion of the guide pin 13 until it reaches a predetermined position. Send it in. And as shown in FIG.16 (c), using the impactor 18 as a pushing tool, the axial support part 16c of the tube plate 16 is inserted in a bone, and the main-body part 16b contacts the diaphyseal part 10 closely. Until the tube plate 16 is pushed in. In this state, as shown in FIG. 16 (d), the screw 19 is inserted into the predetermined shaft support hole 16a and the mounting hole 16d of the main body portion 16b, and the tube plate 16 and the lag screw 15 are firmly fixed. The screw 19 can be inserted easily and reliably based on the positions of the side hole position confirmation means 21 and the insertion guide member 4 displayed in the X-ray irradiation image. Finally, the incised skin is sutured to complete a series of treatments.

  According to the guide pin insertion template 1 according to the present invention, as described above, the appropriate insertion point and insertion angle are obtained before the guide pin 13 is inserted, and the obtained insertion angle and insertion point are determined. Based on this, the guide pin 13 can be accurately inserted. In addition, since the proper insertion angle and insertion point are required before the guide pin 13 is inserted, the incision range of the patient's skin can be suppressed as much as possible, and the burden on the patient can be reduced. You can make the operation trace inconspicuous.

  The guide pin insertion template 1 according to the present invention includes a rod-shaped insertion guide member 4 that serves as a register when the guide pin 13 is inserted. Since the insertion guide member 4 is configured to extend on the opposite side to the angle display member 3, it is disposed between a bone such as a roughly bone and the human body surface on the X-ray irradiation image. . Therefore, in the procedure of inserting the guide pin 13 while viewing the X-ray irradiation image, the guide pin 13 and the insertion guide member are checked for overlap before the guide pin 13 is inserted into the bone. 13 can be reliably inserted into the bone at the correct position and angle.

  In addition, the guide pin insertion template 1 is configured such that the angle display member 3 includes the implant selection means 32. Therefore, an osteosynthesis implant (lag) having the most preferable length for a patient undergoing a fracture treatment. The screw 15) can be easily selected. As a result, once the lag screw 15 is inserted into the bone, it is possible to reliably prevent the occurrence of a situation where it becomes clear that the lag screw 15 is not suitable for the patient.

  Further, since the guide pin insertion template 1 is formed of a metal material different from the metal material forming the guide pins 13 inserted into the bone, the X-ray transmittance of the guide pin insertion template 1 is increased. And the X-ray transmittance of the guide pin 13 can be different from each other. As a result, the X-ray transmission image of the guide pin 13 and the guide pin insertion template 1 can be clearly distinguished in the X-ray irradiation image, and the positional relationship between the two can be easily and reliably grasped. Is possible. In particular, when the guide pin insertion template 1 is formed of a metal material having a specific gravity lighter than the specific gravity of the metal material forming the guide pin 13, the X-ray guide pin insertion is lighter in specific gravity than the guide pin 13. Since it becomes easy to permeate | transmit the template 1 for a guide, the guide pin 13 which has overlapped with the template 1 for guide pin insertion can be visually recognized reliably, and the workability | operativity of an operation can be improved.

  Moreover, since the opening window 31 is formed in the angle display member 3, the area | region of the angle display member which overlaps with the guide pin 13 on an X-ray irradiation image can be reduced. As a result, the insertion angle and insertion position of the guide pin 13 inserted into the bone can be confirmed easily and reliably, and the efficiency of the insertion operation of the guide pin 13 can be improved.

  Further, if the guide pin insertion template 1 according to the present embodiment is used, the guide pin 13 can be accurately inserted into the bone without inserting the angle guide into the body as in the prior art. When the guide pin 13 is inserted using an angle guide, it is necessary to incise the patient's skin over a wide range in order to insert the angle guide into the body, but the guide pin insertion template 1 is used. In such a case, since the angle guide inserted into the body is not necessary, the incision range of the skin can be suppressed as much as possible, the burden on the patient can be reduced, and the operation trace can be made inconspicuous.

  The guide pin insertion template 1 according to one embodiment of the present invention has been described above, but the specific configuration of the guide pin insertion template 1 is not limited to the above embodiment. In the above embodiment, as an implant selection means 32 for confirming the size of the osteosynthesis implant (lag screw 15) to be inserted into the bone, the uneven portion formed on the side edge of the angle display member 3 is exemplified. However, the shape of the concavo-convex portion is not limited to the shape shown in FIG. 2, and for example, a shape as shown in FIG. 7 or FIG. 8 can be adopted. Further, without providing the shape of these uneven portions or the like, together with these shapes, selection of implants corresponding to the convex portion 32a indicating L size, the concave portion 32b indicating M size, and the convex portion 32c indicating S size in FIG. The implant selection means 32 can also be formed by changing the X-ray transmittance by changing the thickness of the means 32.

  Further, for example, as shown in FIG. 9, the implant selecting means 32 may be configured by a plurality of granular members 321 embedded along the longitudinal direction of the angle display member 3. Here, each granular member 321 is formed of a metal material different from the metal material forming the angle display member 3. Even with such a configuration, it is possible to easily select the size of the lag screw 15 to be installed on the femoral neck based on the position of the granular member 321 displayed in the X-ray irradiation image.

  Moreover, in the said embodiment, you may comprise so that the angle of the angle display member 3 with respect to the reference member 2 can be changed variously. Specifically, as shown in FIG. 10, the reference member 2 and the angle display member 3 may be connected via a fixing screw 35. An angle meter (not shown) that displays an angle formed by the reference member 2 and the angle display member 3 is preferably attached to the reference member 2 or the angle display member 3. In this way, by connecting the reference member 2 and the angle display member 3 via the rotating member, the insertion angle of the guide pin 13 can be easily changed in various ways, 130 °, 135 °, 140 °. The single guide pin insertion template 1 can cope with individual osteosynthesis implants (lag screw 15 and tube plate 16) having various installation angles. In addition, it is possible to select an osteosynthesis implant (lag screw 15 and tube plate 16) having the most preferable installation angle for a patient undergoing a fracture treatment such as a femoral neck fracture.

  Moreover, in the said embodiment, as shown in FIG. 11, you may provide the rod-shaped collar part 5 which protrudes from the one end part of the angle display member 3 on the opposite side to the reference | standard member 2. As shown in FIG. By adopting such a configuration, for example, when a tube plate having a plate-like portion extending to the greater femoral trochanter side is installed on the bone, the tube plate installation area (installation length) in the patient's femur It can be used as a measure of whether or not there is a problem, and the tube plate can be selected efficiently.

  Moreover, in the said embodiment, although the side hole position confirmation means 21 is formed in one side edge 2a along the longitudinal direction of the reference member 2, the formation position of this side hole position confirmation means 21 is the reference member. For example, it may be formed on the other side edge 2 b of the reference member 2. Moreover, although the some convex part 21a-21d which protrudes from the reference member 2 is illustrated as the side hole position confirmation means 21, it is not specifically limited to such a shape, For example, as shown in FIGS. In addition, various shapes can be employed. In FIG. 14, the convex portion 21 a formed in the vicinity of the insertion guide member 4 has a shape that is integral with the insertion guide member 4. Further, for example, as shown in FIG. 15, the side hole position confirmation means 21 may be configured by a plurality of granular members 211 embedded along the longitudinal direction of the reference member 2. Here, each granular member 211 is formed of a metal material different from the metal material forming the reference member 2. Even in such a configuration, the position of the mounting hole for screw insertion in the osteosynthesis implant (tube plate 16) fixed to the bone is grasped based on the position of the granular member 211 shown in the X-ray irradiation image. Is possible.

  In addition, the method for using the guide pin insertion template 1 according to the present invention has been described by taking the case of treating a femoral neck fracture as described above. Needless to say, it can also be used for fractures other than femoral neck fractures. For example, it can be used for treatment of various fractures such as humeral neck fractures, forearm fractures, and tibial fractures.

DESCRIPTION OF SYMBOLS 1 Guide pin insertion template 2 Reference | standard member 2a One side edge 2b The other side edge 21 Side hole position confirmation means 3 Angle display member 31 Opening window 32 Implant selection means 4 Insertion guide member Z1 Axis Z2 of insertion guide member Angle display Axis of member (axis of opening window)

Claims (7)

A guide pin insertion template for inserting a guide pin to be used as a guide when inserting an osteosynthesis implant into the inside of a bone in an appropriate position with an appropriate angle in the bone in advance,
A rod-shaped reference member arranged along the length direction of the bone;
A rod-shaped angle display member having one end connected to the reference member and indicating a predetermined angle with respect to the reference member;
A guide pin insertion template provided with a rod-shaped insertion guide member that protrudes from the one end portion of the angle display member to the opposite side of the angle display member and serves as a register when inserting a guide pin.   The guide pin insertion template according to claim 1, wherein the reference member, the angle display member, and the insertion guide member are formed of a metal material different from a metal material that forms a guide pin inserted into a bone.   The guide pin insertion template according to claim 1 or 2, wherein the reference member, the angle display member, and the insertion guide member are made of a titanium alloy.   The guide pin insertion template according to any one of claims 1 to 3, wherein the angle display member includes an implant selection means for confirming a size of an osteosynthesis implant inserted into a bone.   The guide pin insertion template according to claim 4, wherein the implant selecting means is an uneven portion formed on a side edge of the angle display member.   The guide pin insertion template according to any one of claims 1 to 5, further comprising a rod-shaped brim portion that protrudes from the one end portion of the angle display member to the side opposite to the reference member.   The guide pin insertion template according to any one of claims 1 to 6, wherein the angle display member includes an opening window extending in a direction parallel to an axis of the insertion guide member.