JP2025020561A - Training device for bone surgery using simulated bone or joint tissue composed of simulated bone - Google Patents

Abstract

[Problem] To provide a bone surgery training device using a simulated bone or joint tissue composed of the simulated bone, which can easily and reliably reproduce actual surgery, and a manufacturing method thereof. [Solution] A bone surgery training device using a simulated bone 1 is formed by a target site determination step (STEP 10), a fat part attachment step (STEP 11), a muscle part placement step (STEP 12), a blood vessel part placement step (STEP 13), a subcutaneous tissue part placement step (STEP 14), and a skin part formation step (STEP 15). [Selected Figure] Figure 1

Description

The present invention relates to a surgical training device that is composed of simulated bone and soft tissue arranged in an anatomical position to mimic a real living body.

Conventionally, as shown in Patent Document 1 below, this type of human body model involves acquiring morphological and positional data of bones, muscles, and skin through image analysis of the human body, and forming simulated bones and muscles based on this acquired data, as well as forming a mold for creating a model of at least a portion of the external shape of the human body. A known human body model is then constructed by placing simulated bones and muscles inside the mold and filling the remaining areas with a material for forming simulated skin.

JP 2017-596997 A

While these conventional human body models are more faithful to the structure of the actual human body, they are bulky and inappropriate as training tools primarily intended for bone surgery.

On the other hand, although simulated bones have long been available as training equipment for bone surgery, even if surgical training is conducted with the bone itself exposed, it is far removed from actual surgery, where the field of vision is limited by muscles, etc.

The present invention aims to provide a bone surgery training device that uses simulated bones and structures (joint tissues) placed in anatomical positions that can easily and reliably reproduce actual surgery, and a method for manufacturing the same.

The bone surgery training instrument using the simulated bone or joint tissue composed of the simulated bone according to the first invention is as follows:
A fat portion that is an elastic plastic body having a color corresponding to adipose tissue and that is attached to a training target portion of the simulated bone;
A muscle portion that is arranged to cover the fat portion and is an elastic plastic body having a color corresponding to muscle tissue;
A tubular vascular portion corresponding to a blood vessel, the vascular portion being arranged adjacent to the fat portion and the muscle portion;
a subcutaneous tissue portion that is an elastic plastic body having a color corresponding to subcutaneous tissue and that is arranged so as to cover the entire part including the muscle portion;
a film-like skin portion corresponding to skin, the film-like skin portion being covered so as to cover a surface of the subcutaneous tissue portion;
The fat portion, the muscle portion, the blood vessel portion, the subcutaneous tissue portion and the skin portion are partially formed in a portion of the simulated bone that is to be trained.

According to the bone surgery training device using the simulated bone or joint tissue formed from the simulated bone of the first invention, by sequentially arranging elastic plastic bodies having colors corresponding to fat, muscle, and subcutaneous tissue on the simulated bone or joint tissue formed from the simulated bone, it is possible to easily and reliably form biological tissues, etc. that need to be handled during bone or joint surgery in association with the simulated bone or joint tissue.

In addition, by providing a tube-shaped vascular section that corresponds to blood vessels, surgical training can be performed that takes into account the blood vessels that require special attention during bone surgery.

Furthermore, by wrapping the simulated bone with fat, muscle, blood vessels, and subcutaneous tissue, it is possible to integrate these parts and reproduce the skin, including its surface, by wrapping the simulated bone with a film-like skin.

Here, by partially forming fat, muscle, blood vessels, subcutaneous tissue, and skin in the area that is the training target for simulated bone or joint tissue composed of simulated bone, a simple configuration that is primarily intended for bone surgery can be realized, unlike a large-scale human body model.

On the other hand, the area of the simulated bone or joint tissue made of the simulated bone that is the subject of training is provided with skin, subcutaneous tissue, muscle, blood vessels, and fat, which correspond to the skin membrane, skin, muscle, blood vessels, and fat that the surgeon must take into account before reaching the bone or joint during surgery. Therefore, after treating these in the same way as in an actual surgery, training can be performed to expose the area of the simulated bone or joint tissue made of the simulated bone that is the subject of training.

In addition, each part is designed in a color and layout that corresponds to actual biological tissue, allowing the surgeon performing the procedure to train while being aware of which biological tissue they are treating.

Furthermore, the simulated bone or joint tissue area formed by the simulated bone that is the subject of training and exposed by the procedure can also be made to reproduce the surgical field by muscles, just as the field of view is actually limited by muscles, making it possible to simulate surgery such as resection of the simulated bone itself in a manner that is close to the actual surgery.

In this way, the bone surgery training device using the simulated bone or joint tissue composed of the simulated bone of the first invention can easily, reliably, and safely reproduce actual surgery as training that does not cause damage to blood vessels, etc., and limits crushing of muscle tissue to a minimum.

The bone surgery training instrument using a simulated bone or a joint tissue constituted by the simulated bone according to the second invention is the first invention,
The present invention is characterized in that it further comprises a thread-like nerve portion corresponding to a nerve, which is arranged adjacent to the muscle portion.

The bone surgery training device of the second invention, which uses a simulated bone or joint tissue composed of a simulated bone, can easily and reliably reproduce nerves, which are biological tissues that need to be handled during bone and joint surgery, by arranging thread-like nerve parts that correspond to nerves adjacent to muscle parts.

In this way, the bone surgery training device using the simulated bone or joint tissue composed of the simulated bone of the second invention makes it possible to easily and reliably reproduce actual surgery, including nerves, including training that does not cause nerve damage.

The third invention relates to a training instrument for bone surgery using a simulated bone or a joint tissue formed from the simulated bone, the training instrument for bone surgery using the first invention,
The artificial bone or the artificial bone-constituted joint tissue is characterized in that it further comprises either or both of a resin ligament portion corresponding to a ligament and a fiber bundle tendon tissue portion corresponding to tendon tissue, arranged adjacent to the artificial bone or the artificial bone-constituted joint tissue.

According to the bone surgery training device of the third invention using a simulated bone or joint tissue composed of a simulated bone, by arranging either or both of a resin ligament portion equivalent to a ligament and a fiber bundle tendon tissue portion equivalent to tendon tissue adjacent to the simulated bone or joint tissue composed of a simulated bone, it is possible to easily and reliably reproduce ligaments and tendons, which are biological tissues that need to be dealt with during bone and joint surgery.

In this way, the bone surgery training device using the simulated bone or joint tissue formed from the simulated bone of the third invention makes it possible to easily and reliably reproduce actual surgery, including ligaments and tendons, including training that does not cause damage to the ligaments and tendons.

The training instrument for bone surgery using a simulated bone or a joint tissue constituted by the simulated bone according to the fourth invention is any one of the first to third inventions,
The blood vessel portion is filled with a liquid that resembles blood.

According to the fourth invention, a training device for bone surgery using a simulated bone or joint tissue composed of a simulated bone, by inserting a liquid resembling blood (e.g., a red liquid) into the blood vessels, it is possible to easily and reliably reproduce the texture of blood vessels and the situation when blood vessels are damaged in the same way as in actual surgery.

In this way, the bone surgery training device using the simulated bone or joint tissue composed of the simulated bone of the fourth invention can easily and reliably reproduce blood vessels that must be taken into consideration during actual surgery with greater realism.

A method for producing a simulated bone or a surgical training instrument for joint tissues formed from a simulated bone according to the fifth aspect of the present invention comprises the steps of:
A target part determination step of determining a part to be a training target of the simulated bone;
a fat portion attachment step of attaching a fat portion, which is an elastic plastic body having a color corresponding to adipose tissue, to the part to be trained determined by the target part determination step;
a muscle portion arrangement step of arranging a muscle portion which has a color corresponding to muscle tissue and is an elastic plastic body so as to cover the fat portion applied in the fat portion application step;
a blood vessel portion arranging step of arranging a tubular blood vessel portion corresponding to a blood vessel adjacent to the fat portion affixed in the fat portion affixing step and the muscle portion arranged in the muscle portion arranging step;
a subcutaneous tissue portion arrangement step of covering the site with a subcutaneous tissue portion that has a color corresponding to subcutaneous tissue and is an elastic plastic body so as to cover the entire site including the muscle portion arranged in the muscle portion arrangement step;
a skin portion forming step of covering a surface of the subcutaneous tissue portion, the entire site of which is covered by the subcutaneous tissue portion arranging step, with a film-like skin portion corresponding to skin;
The fat portion applied in the fat portion application step, the muscle portion arranged in the muscle portion arrangement step, the blood vessel portion arranged in the blood vessel portion arrangement step, the subcutaneous tissue portion arranged in the subcutaneous tissue portion arrangement step, and the skin portion covered in the skin portion formation step are partially formed in the area that is to be the training target of the simulated bone determined in the target area determination step.

According to the manufacturing method of the fifth invention for a bone surgery training device using a simulated bone or joint tissue composed of a simulated bone, elastic plastic bodies having colors corresponding to fat, muscle, and subcutaneous tissue are sequentially arranged on the simulated bone, so that biological tissues that need to be handled during bone or joint surgery can be easily and reliably formed in association with the simulated bone or joint tissue.

In addition, by providing a tube-shaped vascular section that corresponds to blood vessels, surgical training can be performed that takes into account the blood vessels that require special attention during bone surgery.

In addition, by wrapping the fat, blood vessels, muscle, and subcutaneous tissue sections on the simulated bone with a film-like skin section, these can be integrated and the skin, including its surface, can be reproduced.

Here, by partially forming fat, muscle, blood vessels, subcutaneous tissue, and skin in the area that is the training target for simulated bone or joint tissue composed of simulated bone, a simple configuration that is primarily intended for bone surgery can be realized, unlike a large-scale human body model.

On the other hand, the area targeted for training on the simulated bone contains skin, subcutaneous tissue, muscle, blood vessels, and fat, which correspond to the skin membrane, skin, muscle, blood vessels, and fat that the surgeon must consider before reaching the bone or joint during surgery. Therefore, after treating these in the same way as in an actual surgery, training can be performed to expose the simulated bone and joint tissue areas targeted for training.

In addition, each part is designed in a color and layout that corresponds to actual biological tissue, allowing the surgeon performing the procedure to train while being aware of which biological tissue they are treating.

Furthermore, the simulated bone and joint tissue areas that are the subject of training and exposed during the procedure can be made to reproduce the surgical field by muscle areas, just as the field of view is actually limited by muscles, making it possible to simulate surgeries such as resection of the simulated bone or joint tissue in a manner that is close to the actual surgery.

In this way, the manufacturing method of the fifth invention for a training device for bone surgery using a simulated bone or joint tissue formed from a simulated bone makes it possible to easily and reliably reproduce actual surgery.

1 is a flowchart showing the steps of a method for manufacturing a bone surgery training instrument using a simulated bone according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing the contents of the target portion determination step (STEP 10) of FIG. 1; FIG. 2 is an explanatory diagram showing the fat portion formed in the fat portion attachment step (STEP 11) in FIG. 1 . FIG. 2 is an explanatory diagram showing the muscle portion formed in the muscle portion arrangement step (STEP 12) of FIG. 1 . FIG. 2 is an explanatory diagram showing a blood vessel portion formed in the blood vessel portion arranging step (STEP 13) in FIG. 1 . FIG. 2 is an explanatory diagram showing a subcutaneous tissue portion formed in the subcutaneous tissue portion arranging step (STEP 14) in FIG. 1 . FIG. 2 is an explanatory diagram showing a skin portion formed in the skin portion forming step (STEP 15) in FIG. 1 . FIG. 2 is an explanatory diagram showing a method of using a bone surgery training instrument using a simulated bone according to an embodiment of the present invention. 6 is an explanatory diagram showing a method of using the bone surgery training instrument using a simulated bone according to an embodiment of the present invention, subsequent to FIG. 5 . 7 is an explanatory diagram showing a method of using the bone surgery training instrument using a simulated bone according to an embodiment of the present invention, subsequent to FIG. 6 . 8 is an explanatory diagram showing a method of using the bone surgery training instrument using a simulated bone according to an embodiment of the present invention, subsequent to FIG. 7 . FIG. 1 is an explanatory diagram showing an example of a bone surgery training tool using joint tissue constituted by a simulated bone according to an embodiment of the present invention.

As shown in FIG. 1, in this embodiment, the manufacturing method of a bone surgery training device using a simulated bone 1 includes a target area determination step (STEP 10), a fat attachment step (STEP 11), a muscle placement step (STEP 12), a blood vessel placement step (STEP 13), a subcutaneous tissue placement step (STEP 14), and a skin formation step (STEP 15).

The simulated bone 1 is, for example, the femur shown in FIG. 2A, and is supported by a number of support rods 3, 4, and 5 on a base 2. The support rods 3-5 and the simulated bone 1 are supported by inserting the insertion parts 3A-5A at the tips of the support rods 3-5 through through holes provided in the simulated bone 1, and may be more firmly fixed by screwing wing nuts (not shown) onto the threads cut into the insertion parts 3A-5A as appropriate.

First, in the target area determination step (STEP 10), an area to be used for bone surgery training is determined for the simulated bone 1 shown in FIG. 2A. For example, the case where the femoral condyle is used as the target T will be described below.

Next, in the fat attachment step (STEP 11), as shown in FIG. 2B, fat 11, which is an elastic plastic body (viscous body) with a color corresponding to fat, is attached to the femoral condyle that was targeted T in the target area determination step (STEP 10).

The elastic plastic body (viscous body) with a color equivalent to fat is made of, for example, yellow clay (wood powder clay) that corresponds to fat, and this yellow clay is applied evenly around the femoral condyle of the target T as the fat portion 11.

Next, in the muscle placement step (STEP 12), as shown in FIG. 3A, the muscle portion 12, which is an elastic plastic body (viscous body) with a color corresponding to muscle, is placed on the target T of the simulated bone 1 to which the fat portion 11 has been attached in the fat portion attachment step (STEP 11), so as to cover the fat portion 11.

The elastic plastic body (viscous body) with a color corresponding to muscle is made of, for example, red clay (wood powder clay) that corresponds to muscle, and this red clay is placed as muscle part 12 (here, multiple muscle parts 12A, 12B corresponding to the quadriceps) so as to cover the fat part 11 of the femoral condyle of the target T.

Next, in the blood vessel portion placement step (STEP 13), as shown in FIG. 3B, a tubular blood vessel portion 13 corresponding to a blood vessel is placed adjacent to the fat portion 11 attached in the fat portion attachment step (STEP 11) and the muscle portion 12 placed in the muscle portion placement step (STEP 12).

The blood vessel portion 13 is simply constructed from a straw, and the blood vessel portion 13 (here, the femoral artery passing under the femur) is placed adjacent to the fat portion 11 and muscle portion 12 on the underside of the femoral condyle of the target T.

In addition, a red liquid that resembles blood may be passed through the tube-shaped blood vessel portion 13 using a pump (not shown) or a balloon filled with red liquid.

Next, in the subcutaneous tissue placement step (STEP 14), as shown in FIG. 4A, the entire target T, including the muscle portion 12 placed in the muscle portion placement step (STEP 12), is covered with a subcutaneous tissue portion, which is an elastic plastic body (viscous body) having a color corresponding to skin.

The elastic plastic body (viscous body) having a color corresponding to skin is made of, for example, clay (wood powder clay) in a flesh-colored manner that corresponds to skin, and this flesh-colored clay serves as the subcutaneous tissue portion 14, covering the entire muscle portion 12 (including the blood vessel portion 13) of the femoral condyle of the target T so as to be hidden.

Next, in the skin portion formation step (STEP 15), as shown in FIG. 4B, the surface of the subcutaneous tissue portion 14 that has covered the entire target T in the subcutaneous tissue portion placement step (STEP 14) is covered with a film-like skin portion 15 that corresponds to a skin membrane.

The film equivalent to the skin membrane is made of, for example, transparent or translucent polyvinylidene chloride (PVDC), and this film is used as the skin portion 15 to cover the entire subcutaneous tissue portion 14 multiple times to form the skin portion.

In addition, in the skin portion forming step (STEP 15), it is preferable to remove the simulated bone 1 that has been formed up to the subcutaneous tissue portion 14 from the support rods 3 to 5 as appropriate, and form the skin portion 15 by rotating either the film or the simulated bone 1, and then fix the simulated bone 1 with the skin portion 15 formed to the support rods 3 to 5 in order to adhere the skin portion 15 to the subcutaneous tissue portion 14.

We will now explain how to use the bone surgery training device that uses the simulated bone 1 constructed as described above.

First, as shown in FIG. 5, the trainee can use a scalpel to incise the skin portion 15 and subcutaneous tissue portion 14 of the target T, which correspond to the dermal membrane and skin, so as to approach the target area of the femur in the same way as in an actual femur surgery.

From this state, the surgeon approaches the target area of the femur by using surgical instruments such as fingers or retractors to push apart the target area X, just as in an actual surgery, as shown in Figure 6.

At this time, at the target site X, the muscle portion 12 has been reached by splitting the subcutaneous tissue portion 14, which can be seen from the fact that the subcutaneous tissue portion 14 and the muscle portion 12 are the flesh-colored and red plastic (clay) colors, respectively.

Furthermore, by approaching the target area of the femur while avoiding the muscle area 12, it is possible to know that the target area, the fatty area 11, has been reached by the color of the yellow plastic body (clay) that constitutes the fatty area 11.

Furthermore, from this state, as shown in Figure 7, the surgeon can use surgical instruments such as his/her fingers or a retractor to approach the target area of the femur, just like in an actual surgery, and remove the fat 11 to expose the surgical target area 1' of the simulated bone 1.

Then, as shown in Figure 8, the surgeon sets retractors Y and Z above and below the target site X where the surgical site 1' is exposed, just like in an actual surgery. At this time, the surgeon sets the upper retractor Y so that its tip blade is placed between the surgical site 1' and the muscle part 12. In addition, while checking the blood vessel part 13 with his finger, the surgeon sets the lower retractor Z so that the blade of the retractor Z is placed between the surgical site 1' and the blood vessel part 13 (and the muscle part 12).

In this way, the surgical site 1' is exposed from the target site X, and then the surgical site 1' is cut using a bone cutting tool or the like. This makes it possible to train in a way that replicates an actual surgery in which the field of view is limited by muscles, etc., unlike conventional training that uses mock bones in which the entire bone is exposed.

As explained in detail above, according to the bone surgery training device using the simulated bone 1 of this embodiment, plastic bodies having colors corresponding to the fat portion 11, muscle portion 12, and subcutaneous tissue portion 14 are arranged on the simulated bone 1 in order, so that biological tissues that need to be handled during bone surgery can be easily and reliably formed in association with the simulated bone 1.

In addition, by providing a tubular vascular section 13 that corresponds to a blood vessel, surgical training can be performed that takes into account the blood vessels that require special attention during bone surgery.

In addition, by wrapping the fat section 11, muscle section 12, blood vessel section 13, and subcutaneous tissue section 14 on the simulated bone 1 with a film-like skin section 15, these can be integrated, and the skin membrane on the skin surface can be reproduced, allowing cutting with a scalpel, etc. to be performed.

Here, by partially forming the fat portion 11, muscle portion 12, blood vessel portion 13, subcutaneous tissue portion 14, and skin portion 15 only in the area (target T) of the simulated bone 1 that is the subject of training, a simple configuration primarily intended for bone surgery can be realized, unlike a large-scale human body model.

On the other hand, the area (target T) of the simulated bone 1 that is the subject of training includes the skin portion 15, subcutaneous tissue portion 14, blood vessel portion 13, muscle portion 12, and fat portion 11, which correspond to the skin membrane, skin, muscle, blood vessels, and fat that the surgeon must take into consideration before reaching the bone or joint during surgery. Therefore, after treating these in the same way as in an actual surgery, training can be performed to expose the area of the simulated bone that is the subject of training.

In addition, each part 11 to 15 is designed in a color and arrangement that corresponds to actual biological tissue, allowing the surgeon performing the procedure to train while being aware of which biological tissue is being treated.

Furthermore, the surgical area 1' of the simulated bone 1, which is the training subject and exposed by the procedure, can also be made to reproduce the surgical field by the muscle portion 12, etc., just as the field of view is actually limited by muscles, making it possible to simulate surgery such as resection of the simulated bone 1 itself in a manner close to the actual surgery.

In this way, the bone surgery training device using the simulated bone 1 of this embodiment makes it possible to easily and reliably reproduce actual surgery.

In this embodiment, the fat portion 11, the muscle portion 12, and the subcutaneous tissue portion 14 are made of clay (wood powder clay), which is a plastic body having a corresponding color, but this is not limited to this. For example, they may be made of a colored resin material having viscoelasticity.

In addition, in this embodiment, the femur has been described as the simulated bone 1, but it is not limited to a single simulated bone, and it may also be a joint tissue constituted by a simulated bone. Furthermore, in addition to or instead of the above-mentioned fat portion 11, muscle portion 12, blood vessel portion 13, subcutaneous tissue portion 14, and skin portion 15, it may also be provided with a thread-like nerve portion equivalent to a nerve, a ligament portion equivalent to a ligament, and/or a tendon tissue portion equivalent to tendon tissue.

For example, as shown in FIG. 9, a muscle section 12C corresponding to the quadriceps may be arranged for a simulated knee joint, which is a joint tissue between a simulated bone 1, which is a femur, and a simulated bone 1', which is a tibia, and the muscle section 12C may be connected to a simulated bone 10, which is a patella, via a tendon tissue section 16A corresponding to the quadriceps tendon. Similarly, a configuration may be adopted in which the simulated bone 10, which is a patella, and the simulated bone 1', which is a tibia, are connected via a tendon tissue section 16B corresponding to the patellar tendon. The ligament sections 16A and 16B are made of fiber bundles such as fiber bands, and each connection point is appropriately connected and fixed by adhesive, screws, etc.

The simulated bone 1, which is the femur, and the simulated bone 1', which is the tibia, may be connected via ligament parts 17A and 17B, which correspond to the lateral collateral ligament and medial collateral ligament on both sides. The ligament parts 17A and 17B are made of a resin material, and each connection point is appropriately connected and fixed by adhesive, screws, etc.

Furthermore, the nerve portion 18 corresponding to the saphenous nerve may be constructed from a thread-like member and placed adjacent to the adjacent simulated bones 1, 1' or muscle portion 12, etc.

By forming a subcutaneous tissue section 14 and a skin section 15 on the joint tissue (fat section 11 and blood vessel section 13 are omitted) made of the simulated bone constructed as described above, a surgical training device for the knee joint can be constructed.

Although the joint tissue has been described as being the knee joint, this is not limited thereto, and the target may be, for example, the elbow joint.

1: simulated bone, 1': surgical site, 11: fat area, 12: muscle area, 13: blood vessel area, 14: subcutaneous tissue area, 15: skin area, T: training site (target), X: target area, Y, Z: retractor.

Claims (5)

A surgical training instrument for a joint tissue comprising a simulated bone or a simulated bone,
A fat portion that is an elastic plastic body having a color corresponding to adipose tissue and is attached to a training target portion of the simulated bone;
A muscle portion that is arranged to cover the fat portion and is an elastic plastic body having a color corresponding to muscle tissue;
A tubular vascular portion corresponding to a blood vessel, the vascular portion being arranged adjacent to the fat portion and the muscle portion;
a subcutaneous tissue portion that is an elastic plastic body having a color corresponding to subcutaneous tissue and that is arranged so as to cover the entire part including the muscle portion;
a film-like skin portion corresponding to skin, the film-like skin portion being covered so as to cover a surface of the subcutaneous tissue portion;
A surgical training instrument for a joint tissue comprising an imitation bone or an imitation bone, characterized in that the fat portion, the muscle portion, the blood vessel portion, the subcutaneous tissue portion and the skin portion are partially formed in the area of the imitation bone that is to be trained. 2. The surgical training instrument for joint tissues comprising the simulated bone or the simulated bone according to claim 1,
A surgical training instrument for a joint tissue made of an imitation bone or an imitation bone, further comprising a thread-like nerve portion corresponding to a nerve and disposed adjacent to the muscle portion. 2. The surgical training instrument for joint tissues comprising the simulated bone or the simulated bone according to claim 1,
A surgical training instrument for joint tissue made of a simulated bone or a simulated bone, further comprising either or both of a resin ligament portion equivalent to a ligament and a tendon tissue portion of fiber bundles equivalent to tendon tissue, arranged adjacent to the simulated bone or the joint tissue made of the simulated bone. The simulated bone or the joint tissue surgery training instrument comprising the simulated bone according to any one of claims 1 to 3,
A surgical training instrument for artificial bone or articular tissues made of artificial bone, characterized in that a liquid resembling blood is passed through the blood vessel portion. A method for producing a surgical training instrument for a joint tissue comprising a simulated bone or a simulated bone, comprising the steps of:
A target part determination step of determining a part to be a training target of the simulated bone;
a fat portion attachment step of attaching a fat portion, which is an elastic plastic body having a color corresponding to adipose tissue, to the part to be trained determined by the target part determination step;
a muscle portion arrangement step of arranging a muscle portion which has a color corresponding to muscle tissue and is an elastic plastic body so as to cover the fat portion applied in the fat portion application step;
a blood vessel portion arranging step of arranging a tubular blood vessel portion corresponding to a blood vessel adjacent to the fat portion affixed in the fat portion affixing step and the muscle portion arranged in the muscle portion arranging step;
a subcutaneous tissue portion arrangement step of covering the entire part including the muscle portion arranged in the muscle portion arrangement step with a subcutaneous tissue portion that has a color corresponding to subcutaneous tissue and is an elastic plastic body;
a skin portion forming step of covering a surface of the subcutaneous tissue portion, the entire site of which is covered by the subcutaneous tissue portion arranging step, with a film-like skin portion corresponding to skin;
A method for manufacturing a surgical training instrument for a joint tissue formed from a simulated bone or a simulated bone, characterized in that the fat portion applied in the fat portion application step, the muscle portion arranged in the muscle portion arrangement step, the blood vessel portion arranged in the blood vessel portion arrangement step, the subcutaneous tissue portion arranged in the subcutaneous tissue portion arrangement step, and the skin portion covered in the skin portion formation step are partially formed in the area that is to be the training target of the simulated bone determined in the target area determination step.

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