Endoscope training kit

Abstract

To provide an endoscope training kit capable of performing training of endoscopic examination or endoscopic treatment using a mucosal model in a state close to an actual hollow organ.SOLUTION: An endoscope training kit 1 is used for training of endoscopic examination or endoscopic treatment for a hollow organ, and includes a mucosal model holding body 20 that holds a mucosal model of the hollow organ on a cylindrical inner wall and a housing 10 that stores the mucosal model holding body 20 inside and supports the mucosal model holding body 20 such that a cylindrical central axis of the inner wall faces a direction intersecting a vertical direction. The mucosal model holding body 20 has a first holding body 21 and a second holding body 22 separated from each other on a plane along the central axis, and a configuration in which the mucosal model is stored inside by joining the first holding body 21 and the second holding body 22 to each other, and the mucosal model can be removed by separating the first holding body 21 and the second holding body 22 from each other.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an endoscopy training kit. [Background technology]

[0002] In recent years, endoscopic treatments such as endoscopic submucosal dissection (ESD) and endoscopic mucosal resection (EMR) have been performed for tumors in the mucosal tissues of hollow organs such as the esophagus, stomach, large intestine, and small intestine. In addition, endoscopic examinations such as biopsy and cytology are also performed before and after these endoscopic treatments.

[0003] Such endoscopic examinations and treatments require advanced techniques, and surgical training is conducted to improve the techniques or the quality of medical procedures. Organ models that mimic organ mucosa have been proposed for use in surgical training (e.g., Patent Document 1).

[0004] The mucosal tissue model described in Patent Document 1 comprises a simulated mucosal layer and a simulated submucosal layer, a liquid injection section provided inside either the simulated mucosal layer or the simulated submucosal layer, and a simulated blood vessel in the layer below the simulated mucosal layer, which is said to enable reproduction of bleeding or perforation, which can be problematic in actual resection or dissection surgery. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2021 / 132204 Summary of the Invention [Problem to be solved by the invention]

[0006] When training using a mucosal tissue model such as that described in Patent Document 1, a training kit is required in which the mucosal tissue model is positioned and fixed in a state similar to that of an actual organ, but there are problems such as the lack of suitable training kits or the high cost or long time required to produce them.

[0007] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide an endoscopic training kit that allows training in endoscopic examination or endoscopic treatment using a mucosal model that is similar to a state of an actual tubular organ. [Means for solving the problem]

[0008] In order to achieve the above object, the endoscopic training kit according to the present invention comprises: An endoscopy training kit used for training in endoscopic examination or endoscopic treatment of hollow organs, a mucosa model holder having a cylindrical inner wall therein and holding the mucosa model of the hollow organ on the inner wall; a housing that stores the mucosa model holder therein and supports the mucosa model holder so that the central axis of the cylindrical shape of the inner wall faces in a direction intersecting the vertical direction, The mucosa model holder has a first holder and a second holder that are separated from each other by a plane along the central axis of the cylindrical shape, and is configured so that the mucosa model can be stored inside by joining the first holder and the second holder to each other, and the mucosa model can be removed by separating the first holder and the second holder.

[0009] The first holder and the second holder may each have an elastic layer having a predetermined thickness in a direction from the inner wall of the cylindrical shape toward the outer periphery.

[0010] The first holder and the second holder may each have an electrode sheet disposed on a surface of the inner wall and extending in a direction parallel to the central axis.

[0011] The endoscopy training kit further includes an electrode device to which a return electrode plate for use with an endoscopic energy device is attached, The first holder and the second holder of the mucosa model holder have connection pins on their outer peripheries that are electrically connected to the electrode sheets, The electrode device and the connection pin of the mucosa model holder may be connected by a connection cable.

[0012] The endoscopy training kit further includes a cylindrical rod having a diameter smaller than a diameter of the inner wall of the mucosal model holder, the mucosa model has a predetermined thickness and elasticity, and has a rectangular shape; The mucosal model may be wrapped around the cylindrical rod and placed on the inner wall of either the first holder or the second holder, and the other holder may cover the mucosal model. After that, the cylindrical rod may be removed in the direction of the central axis, so that the mucosal model is placed on the inner wall of the mucosal model holder.

[0013] The endoscopy training kit may further include an insertion tubular body having a tubular shape continuing from the inner wall of the mucosa model holder, through which an endoscope is inserted.

[0014] The first holder and the second holder may have a hollow semi-cylindrical shape, and the inner diameter of the mucosal model when held on the inner walls of the first holder and the second holder may be the same as the inner diameter of the tubular organ.

[0015] The housing may have a hollow, semi-cylindrical upper and lower housing parts with an inner diameter that allows the mucosa model holder to be stored without any gaps, and may be configured so that the mucosa model holder can be installed or removed by lifting the upper housing part relative to the lower housing part.

[0016] The endoscope training kit includes: a housing leg portion that supports the housing from below; The device may further include a tubular body leg portion that supports the insertion tubular body from below.

[0017] The endoscopy training kit includes two or more of the mucosal model holders, Two or more of the mucosa model holders may be arranged in a vertical row so that the directions of the central axes are aligned with each other. [Effects of the Invention]

[0018] According to the present invention, a mucosal model holder that holds a mucosal model on the inner wall of a cylindrical shape is supported by a housing, making it possible to conduct training in endoscopic examination or endoscopic treatment using a mucosal model that is in a state that is close to that of an actual luminal organ. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a perspective view showing the appearance of an endoscope training kit according to a first embodiment of the present invention. [Figure 2] FIG. 1 is a side view showing the appearance of an endoscope training kit. [Figure 3] FIG. 1 is a perspective view showing the appearance of an endoscope training kit. [Figure 4] FIG. 2 is a perspective view showing a state in which the housing is open. [Figure 5] FIG. 10 is a perspective view showing a state in which the housing and the mucosa model holder are unfolded. [Figure 6] (a) is an oblique view of the second holder on which the mucosa model is placed, (b) is a side view of the mucosa model holder as viewed in the axial direction, and (c) is a cross-sectional view of the mucosa model holder in a plane perpendicular to the axial direction. [Figure 7] (a) is a cross-sectional view of a flattened mucosal model, and (b) is a cross-sectional view showing the state in which a swelling liquid has been injected into the mucosal model. [Figure 8] FIG. 10 is a diagram showing the configuration of an endoscope training kit when using an electric scalpel. [Figure 9] FIG. 10 is a side view of the endoscope training kit when using an electric scalpel, as seen from the rear. [Figure 10]1(a) to 1(d) are diagrams showing the procedure for placing a mucosal model on a mucosal model holder. [Figure 11] 1(a) to 1(d) are diagrams illustrating the procedure of endoscopic submucosal dissection. DETAILED DESCRIPTION OF THE INVENTION

[0020] Embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, the same or equivalent parts are designated by the same reference numerals. In the following embodiments, the terms "have," "include," or "contain" also mean "consist of" or "consist of."

[0021] (Embodiment) The endoscopic training kit 1 according to this embodiment is a kit used for training in endoscopic examination or endoscopic treatment. For example, the endoscopic training kit 1 is used for training in endoscopic treatment such as endoscopic submucosal dissection (ESD) and endoscopic mucosal resection (EMR). The endoscopic training kit 1 can also be used for training in endoscopic examinations such as biopsy and cytology that are performed before and after these endoscopic treatments.

[0022] The endoscopic training kit 1 includes a mucosal model that mimics the mucosa of a hollow organ, and is used to perform treatment on this mucosal model using an endoscope. The endoscopic training kit 1 according to this embodiment is a training kit designed to perform treatment on a mucosal model that mimics the mucosa of the esophagus. The endoscopic examination or endoscopic treatment that is the subject of training is arbitrary, and may be, for example, the examination or treatment of early-stage cancer or benign tumors.

[0023] In the endoscopic training kit 1, it is assumed that the endoscopic cable passes through a lumen that simulates the esophagus. In the following explanation, the insertion direction of the endoscopic cable is referred to as the axial direction, the side of the endoscope's insertion port in the axial direction is referred to as the front, the side opposite the insertion port is referred to as the rear, the position perpendicular to the axial direction and horizontally away is referred to as the side, the side of the installation stand for the endoscopic training kit 1 is referred to as the bottom, and the side opposite the installation stand is referred to as the top.

[0024] Figures 1 to 3 are diagrams showing the appearance of an endoscopic training kit 1 according to this embodiment, where Figure 1 is a perspective view seen from the side and above, Figure 2 is a side view seen from the side, and Figure 3 is a perspective view seen from the rear and above.

[0025] As shown in Figures 1 to 3, the endoscopy training kit 1 comprises a housing 10 and a mucosa model holder 20 that is stored inside the housing 10 and holds a mucosa model inside. Figures 1 to 3 show a configuration in which two mucosa model holders 20 stored in two housings 10 are arranged vertically in the axial direction, but the numbers of housings 10 and mucosa model holders 20 are each the same arbitrary number of 1 or more, for example, 1 to 3 each. The directions of the central axes of the one or more housings 10 and mucosa model holders 20 coincide with the axial direction.

[0026] The endoscopic training kit 1 further includes an insertion tubular body 40 having a tubular shape continuing from the frontmost mucosal model holder 20 among the one or more mucosal model holders 20, housing legs 11 that support each housing 10 from below, tubular body legs 41 that support the insertion tubular body 40 from below, and a base 50 to which the housing legs 11 and tubular body legs 41 are fixed.

[0027] More specifically, the endoscopy training kit 1 is basically composed of one housing 10, one mucosa model holder 20, and an insertion tubular body 40. Other mucosa model holders 20 may be sequentially connectable to the axial rear of the mucosa model holder 20 (the opposite side of the insertion tubular body 40). In this case, another housing 10 is further provided for storing the other mucosa model holders 20 to be connected. One or more housing legs 11 supporting each of the one or more housings 10 may be fixed to a single pedestal, or one pedestal may be provided for each set of mucosa model holder 20, housing 10, and housing leg 11. FIGS. 1 to 3 illustrate a configuration in which two housing legs 11 are fixed to a single pedestal, the two housing legs 11 support the two housings 10, and the two mucosa model holders 20 stored in the two housings 10 are connected to each other.

[0028] The housing 10 and the mucosa model holder 20 may have a latch mechanism to fix them to each other so that their relative positions do not shift. For example, a protrusion may be provided on either the inner periphery of the housing 10 or the outer periphery of the mucosa model holder 20, and a recess into which the protrusion fits may be provided on the other.

[0029] As shown in FIGS. 1 to 3, the housing 10 includes a hollow, semi-cylindrical upper housing 12 and a lower housing 13 having an inner diameter large enough to accommodate the mucosa model holder 20 without any gaps inside. The lower housing 13 may be integrated with the housing legs 11. The hollow semi-cylindrical shape has a semi-cylindrical cavity inside, and has an outer peripheral surface and an inner peripheral surface that have the same or parallel central axes. The shapes of the outer peripheral surface and the inner peripheral surface may be any shape, such as a semi-cylinder or semi-elliptical cylinder.

[0030] 4, the housing 10 can be opened and closed by lifting the upper housing part 12 relative to the lower housing part 13, and by opening the housing 10, the mucosa model holder 20 can be placed in or removed from the housing 10. The upper housing part 12, the lower housing part 13, and the housing legs 11 that constitute the housing 10 are formed of a resin such as PLA (Poly-Lactic Acid), for example.

[0031] Fig. 4 is a perspective view showing the state in which the housing 10 is open. In Fig. 4, one end of the upper housing 12 is rotatably connected to the lower housing 13 in the horizontal direction perpendicular to the axial direction, and the other end can be opened and closed relative to the lower housing 13. The other end is provided with a housing engagement part 14, which locks the housing 10 when it is closed.

[0032] The mucosa model holder 20 has a hollow semi-cylindrical shape and includes a first holder 21 and a second holder 22 that are separated from each other by a plane along the central axis of the hollow semi-cylindrical shape. Similar to the housing 10, the hollow semi-cylindrical shapes of the first holder 21 and the second holder 22 have a semi-cylindrical cavity therein and have an outer peripheral surface and an inner peripheral surface that have the same or parallel central axes, but the shape of the inner peripheral surface is semi-cylindrical. Figure 4 shows the first holder 21 and the second holder 22 joined together and stored in the lower housing part 13.

[0033] 5 is a perspective view showing the housing 10 and mucosa model holder 20 in an unfolded state, prior to installation of the mucosa model 205. As shown in Fig. 5, the first holder 21 and second holder 22 of the mucosa model holder 20 each have a semi-cylindrical inner wall 210, and the joining surface 211 of the first holder 21 and the joining surface 221 of the second holder 22 join together to form the cylindrical inner wall 210 that holds the mucosa model 205.

[0034] The housing 10 supports the mucosa model holder 20 so that the central axis of the cylindrical shape of the inner wall 210 of the mucosa model holder 20 faces a direction intersecting the vertical direction. More preferably, as shown in Figures 1 to 5, the housing 10 supports the mucosa model holder 20 so that the central axis of the cylindrical shape of the inner wall 210 faces a direction perpendicular to the vertical direction and the central axis is horizontal.

[0035] The detailed configuration of the mucosa model holder 20 will be explained using Fig. 6. Fig. 6(a) is a perspective view of the second holder 22 on which the mucosa model 205 is placed, (b) is a side view of the mucosa model holder 20 as viewed in the axial direction, and (c) is a cross-sectional view of the mucosa model holder 20 in a plane perpendicular to the axial direction indicated by the dashed dotted line A in Figs.

[0036] As shown in Figures 5 and 6(a), first holder 21 and second holder 22 each have elastic layer 201 that has a predetermined thickness in the direction from semi-cylindrical inner wall 210 toward the outer periphery. Elastic layer 201 is made of a material with a predetermined elasticity, and for example, urethane foam sponge is used for elastic layer 201. Elastic layer 201 is intended to reproduce the texture of esophageal muscle, and the thickness and elasticity of elastic layer 201 are determined in accordance with the texture of esophageal muscle.

[0037] The outer peripheral portions surrounding the elastic layer 201 of the first holder 21 and the second holder 22 are formed of a resin such as PLA (Poly-Lactic Acid), similar to the housing 10. The outer peripheral portions surrounding the elastic layer 201 of the first holder 21 and the second holder 22 and the housing 10 may be produced using a 3D printer.

[0038] As shown in Fig. 5, an electrode sheet 202 is provided on the semi-cylindrical inner wall 210 of the first holder 21 and the second holder 22. More specifically, the electrode sheet 202 extends in a direction parallel to the central axis of the mucosa model holder 20 on the semi-cylindrical surface (inner wall 210) of the elastic layer 201. The electrode sheet 202 has a function equivalent to that of a return electrode plate that receives high-frequency current radiated from an energy device such as an electric scalpel when the energy device is used. The electrode sheet 202 is made of a material with a certain degree of conductivity, and stainless steel, for example, is used for the electrode sheet 202.

[0039] 5 and 6(a), the first holder 21 and the second holder 22 may further include a valve model 208 at the axial rear end of the inner wall 210. The valve model 208 has the shape of a thin meniscus, and imitates the EG junction (Esophagogastric Junction).

[0040] As shown in Fig. 6(a), a mucosal model 205 simulating the mucosa of a hollow organ is placed on the inner wall 210 of the first holder 21 or the second holder 22. Specifically, the mucosal model 205 is placed on either the first holder 21 or the second holder 22 and covered with the other, so that the mucosal model 205 is placed on the inner wall 210 of the mucosal model holder 20, as shown in the cross-sectional view of Fig. 6(c). In this case, it is preferable that the inner diameter of the mucosal model 205 held in the mucosal model holder 20 is the same as the inner diameter of the target hollow organ.

[0041] That is, with the mucosa model 205 placed on the inner wall 210, the mucosa model holder 20 can hold the mucosa model 205 inside by joining the joining surface 211 of the first holder 21 and the joining surface 221 of the second holder 22 to each other. Also, the mucosa model 205 can be removed by separating the first holder 21 and the second holder 22 from each other.

[0042] As shown in FIG. 6( c), the electrode sheet 202 is provided between the elastic layer 201 and the mucosa model 205. The electrode sheet 202 is electrically connected to connection pins 207 provided on the outer peripheries of the first holding body 21 and the second holding body 22. The connection pins 207 are provided to protrude from the outside of the first holding body 21 and the second holding body 22. More specifically, as shown in FIG. 6( b), notches 206 are formed at the front or rear axial ends of the first holding body 21 and the second holding body 22, and two connection pins 207 provided in the notches 206 at both ends are electrically connected to the electrode sheet 202. For example, stainless steel is used for the electrode sheet 202, and free-cutting brass is used for the connection pins 207.

[0043] In FIG. 6(a), the mucosa model 205 is depicted as having a cylindrical shape, but the mucosa model 205 may have a predetermined thickness and elasticity and may also have a rectangular shape. A cylinder may also be formed by rolling the rectangular mucosa model 205 in one direction. FIG. 7(a) is a cross-sectional view of the flattened mucosa model 205 along the thickness direction. The mucosa model 205 is made of any material and has elasticity similar to that of the mucosa of a hollow organ. For example, the mucosa model 205 is made of konjac and contains a certain amount of moisture.

[0044] The mucosal model 205 may also include multiple layers with different elastic moduli or thicknesses. For example, as shown in FIG. 7( a), simulated layers of a mucosal layer 2051, a submucosal layer 2052, and a muscular layer 2053 may be included, in that order from top to bottom. Such a mucosal model 205 can be injected with a distension liquid used in actual endoscopic treatment or a distension liquid specifically for the mucosal model 205. FIG. 7( b) shows a state in which distension liquid is injected into the submucosal layer 2052 with an injection needle 601 from an injection tube through which the endoscope cable 60 passes, forming a distension in the submucosal layer 2052. In the example of FIG. 7( b), the submucosal layer can gel in response to the distension liquid, making it possible to cut the mucosal model 205 without the distension liquid leaking out.

[0045] The endoscopic training kit 1 further has a configuration for using an energy device such as an endoscopic electric scalpel. For example, when actually performing endoscopic submucosal dissection (ESD) on a living body, a return electrode plate 71 is attached to the living body, and a high-frequency current is emitted from the electric scalpel 602 to incise mucosal tissue or stop bleeding. To accommodate the use of such an energy device such as the electric scalpel 602, the endoscopic training kit 1 further includes an electrode device 80 to which the return electrode plate 71 is attached, and a connection cable 82 that electrically connects the electrode device 80 to the electrode sheet 202 of the mucosa model holder 20, as shown in FIG. 8 .

[0046] Fig. 8 is a diagram showing the configuration of the endoscopic training kit 1 when using an electric scalpel, and Fig. 9 is a perspective view of a portion of the endoscopic training kit 1 when using an electric scalpel, viewed from the front. As shown in Fig. 9, a notch 206 provided at the axial front end of the mucosa model holder 20 is provided with two connection pins 207 that are electrically connected to the electrode sheets 202 of the first holder 21 and the second holder 22. Two connection clips 83 provided at one end of two connection cables 82 are attached to these two connection pins 207.

[0047] 8, two connection clips 83 provided at the other ends of two connection cables 82 are attached to connection terminals 81 provided at the corners of the electrode device 80. This establishes electrical continuity between the electrode sheets 202 of the first holding body 21 and the second holding body 22 and the electrode device 80.

[0048] A return electrode 71 and an electric scalpel 602 used in endoscopic submucosal dissection (ESD) are connected to a high-frequency current generator 70 via electric scalpel cables 72 and 73, respectively. The electric scalpel cable 73 on the electric scalpel 602 side passes through the inside of the endoscope cable 60. When the return electrode 71 is attached to the electrode device 80, electrical conduction is established between the return electrode 71 and the electrode sheet 202 of the mucosa model holder 20, and the electrode sheet 202 therefore serves as the return electrode 71 for the electric scalpel 602.

[0049] An example of the procedure for training in endoscopic submucosal dissection (ESD) using the endoscope training kit 1 configured in this manner will be described.

[0050] First, we will explain the procedure for setting up the endoscopic training kit 1. First, the mucosa model 205 is placed on the mucosa model holder 20. Figures 10(a) to 10(d) are views showing the procedure for setting the mucosa model 205 on the mucosa model holder 20.

[0051] First, a rectangular mucosa model 205 is wrapped around a cylindrical rod 30 as shown in Figure 10(a). The cylindrical rod 30 is a rod having a cylindrical shape with a diameter smaller than the diameter of the inner wall 210 of the mucosa model holder 20 by the thickness of the mucosa model 205, and may be one that is included in the endoscopy training kit 1.

[0052] Next, as shown in FIG. 10(b), the mucosa model 205 wrapped around the cylindrical rod 30 is placed on the inner wall 210 of either the first holder 21 or the second holder 22. FIG. 10(b) shows the case where the mucosa model 205 is placed on the inner wall of the second holder 22. Here, the first holder 21 and the second holder 22 include an elastic layer 201 that supports the outer periphery of the mucosa model 205 and an electrode sheet 202 that is placed along the inner wall 210, and the cylindrical mucosa model 205 is placed on the surfaces of the elastic layer 201 and the electrode sheet 202.

[0053] Next, the mucosa model 205 placed on either the first holder 21 or the second holder 22 is covered with the other, and the bonding surface 211 of the first holder 21 is bonded to the bonding surface 221 of the second holder 22. In the example of Figure 10(c), the cylindrical mucosa model 205 placed on the inner wall 210 of the second holder 22 is covered with the first holder 21.

[0054] Thereafter, as shown in FIG. 10(d), the cylindrical rod 30 is removed in the direction of the central axis (axial direction). At this time, because the mucosal model 205 contains moisture, the mucosal model 205 is gently fixed to the inner wall 210 due to the weight of the moisture in the mucosal model 205 and the frictional force between the mucosal model 205 and the inner wall. Furthermore, because the mucosal model 205 has a thick rectangular shape and a certain degree of elasticity, it has an outward force that tries to return to a flat shape when rolled into a cylindrical shape. This outward force also contributes to fixing the mucosal model 205 to the inner wall 210. Furthermore, slight steps or protrusions for hooking the mucosal model 205 may be provided at both axial ends of the inner wall 210 of the mucosal model holder 20. These steps or protrusions make it difficult for the mucosal model 205 to fall out of the mucosal model holder 20.

[0055] In this way, the mucosal model holder 20 holding the mucosal model 205 inside is placed on the lower housing part 13 of the open housing 10, as shown in Figure 4. The mucosal model holder 20 is then fixed from above by the upper housing part 12. When the endoscopic training kit 1 includes two or more mucosal model holders 20, each mucosal model holder 20 is fixed by its respective housing 10. At this time, the mucosal model holders 20 are arranged in a vertical row so that the directions of their central axes coincide with each other.

[0056] Thereafter, the insertion tubular body 40 supported by the tubular body legs 41 is installed at the front end of the inner wall 210 of the mucosa model holder 20 located at the forefront so as to be continuous with the inner wall 210. By inserting the endoscope cable 60 from the insertion tubular body 40 into the endoscope training kit 1 installed in this manner, training in endoscopic examination or endoscopic treatment of the mucosa model 205 can be carried out.

[0057] Next, an example of the procedure for endoscopic submucosal dissection (ESD) using the endoscopy training kit 1 will be described with reference to FIG.

[0058] 8 and 9 , the connection clip 83 at one end of the connection cable 82 is attached to the connection pin 207 of the mucosa model holder 20, and the connection clip 83 at the other end of the connection cable 82 is attached to the connection terminal 81 of the electrode device 80. Then, the return electrode 71 connected to the high-frequency current generator 70 is attached to the electrode device 80. In this state, the endoscope cable 60 including the injection needle 601 and the electric scalpel 602 is inserted from the insertion tubular body 40.

[0059] When the tip of the endoscope cable 60 reaches the mucosa model 205 held on the inner wall 210 of the mucosa model holder 20, a surgical procedure is performed using the injection needle 601 and the electric scalpel 602.

[0060] First, as shown in Fig. 11(a), a mark is made using an electric scalpel 602 at a position several mm inside the resection area to be resected from the mucosa model 205. Next, as shown in Fig. 11(b), a distension liquid is injected from an injection needle 601 into the submucosal layer 2052, which is the layer below the marked position.

[0061] Next, as shown in Fig. 11(c), an incision is made around the periphery of the mark using an electric scalpel 602. The incision is made little by little with the electric scalpel 602 up to the submucosal layer 2052, and as shown in Fig. 11(d), the mucosal layer 2051 and the submucosal layer 2052 in the excision area are peeled off little by little and excised from the mucosal model 205.

[0062] Training using the endoscopic training kit 1 implemented in this manner can be evaluated by separating the first holder 21 and the second holder 22 of the mucosal model holder 20 from each other, removing and spreading out the mucosal model 205, and based on the surface condition of the mucosal model 205.

[0063] As described above, the endoscopic training kit 1 according to the present embodiment is used for training in endoscopic examination or endoscopic treatment of hollow organs, and includes a mucosal model holder 20 that holds a mucosal model 205 of a hollow organ on a cylindrical inner wall 210, and a housing 10 that stores the mucosal model holder 20 therein and supports the mucosal model holder 20 so that the central axis of the cylindrical inner wall 210 faces in a direction intersecting the vertical direction. The mucosal model holder 20 has a first holder 21 and a second holder 22 that are separated from each other along a plane along the central axis. The first holder 21 and the second holder 22 are joined together to hold the mucosal model 205 therein, and the mucosal model 205 can be removed by separating the first holder 21 and the second holder 22. This makes it possible to conduct training in endoscopic examination or endoscopic treatment using a mucosal model 205 that resembles an actual hollow organ.

[0064] In the endoscopy training kit 1 according to this embodiment, the first holding body 21 and the second holding body 22 each have an elastic layer 201 that has a predetermined thickness in the direction from the cylindrical inner wall 210 toward the outer periphery, thereby reproducing the texture of the esophageal muscles.

[0065] In the endoscopic training kit 1 according to this embodiment, the first holder 21 and the second holder 22 are each installed on the surface of an inner wall 210 and have an electrode sheet 202 extending in a direction parallel to the central axis. The endoscopic training kit 1 further includes an electrode device 80 to which a return electrode plate 71 of an endoscopic energy device is attached. The first holder 21 and the second holder 22 of the mucosa model holder 20 are provided on their outer peripheries with connection pins 207 that are electrically connected to the electrode sheet 202, and the electrode device 80 and the connection pins 207 of the mucosa model holder 20 are connected by a connection cable 82. This allows the electrode sheet 202 in contact with the mucosa model 205 to have the same function as the return electrode plate 71, thereby recreating the environment in which an energy device is used.

[0066] The endoscopic training kit 1 according to this embodiment further includes a cylindrical rod 30 having a diameter smaller than the diameter of the inner wall 210 of the mucosa model holder 20, and the mucosa model 205 has a predetermined thickness and elasticity and is rectangular. The mucosa model 205 is wrapped around the cylindrical rod 30 and placed on the inner wall 210 of either the first holder 21 or the second holder 22. After the other holder covers the mucosa model 205, the cylindrical rod 30 is removed in the axial direction, whereby the mucosa model 205 is placed on the inner wall 210 of the mucosa model holder 20. With this configuration, the mucosa model 205 is loosely fixed to the inner wall 210 of the mucosa model holder 20, allowing training in treatment of the mucosa model 205.

[0067] The endoscopy training kit 1 according to this embodiment further comprises an insertion tubular body 40 having a tubular shape continuing from the inner wall 210 of the mucosa model holder 20 and through which an endoscopic cable 60 is inserted, housing legs 11 that support the housing 10 from below, and tubular body legs 41 that support the insertion tubular body 40 from below. This allows training during endoscopic examination or endoscopic treatment in a situation similar to the esophagus extending in a substantially horizontal direction.

[0068] In the endoscopy training kit 1 according to this embodiment, the first holder 21 and the second holder 22 have a hollow semi-cylindrical shape, and the inner diameter of the mucosa model 205 when held on the inner walls 210 of the first holder 21 and the second holder 22 is the same as the inner diameter of the hollow organ. This allows training in endoscopic examination or endoscopic treatment to be performed on the mucosa model 205, which has a shape that mimics the hollow organ that is the subject of training.

[0069] In the endoscopic training kit 1 according to this embodiment, the housing 10 includes a hollow semi-cylindrical housing upper part 12 and a housing lower part 13 having an inner diameter capable of storing the mucosa model holder 20 without any gaps, and is configured so that the mucosa model holder 20 can be installed or removed by lifting the housing upper part 12 relative to the housing lower part 13. This allows the mucosa model holder 20 to be removed from the housing 10 and separated into two parts, thereby easily installing or removing the mucosa model 205.

[0070] The endoscopic training kit 1 according to this embodiment includes two or more mucosa model holders 20, which are arranged in a vertical row so that the directions of their central axes are aligned with each other. This allows the mucosa models 205 to be arranged to any length.

[0071] The configurations shown in the above-described embodiments are merely examples and can be modified or applied as desired. For example, in the above-described embodiments, a configuration in which one or more mucosal model holders 20 stored in one or more housings 10 are arranged in a vertical row in the axial direction has been described, but the present invention is not limited to this. For example, at least one inner wall 210 of one or more mucosal model holders 20 may have a shape that is partially curved in the extension direction. Furthermore, another configuration may be further provided at the rear end of one or more mucosal model holders 20. For example, a mucosal model simulating the stomach wall present at the end of the esophagus may be arranged.

[0072] In the above embodiment, the use of the electric scalpel 602 in endoscopic submucosal dissection (ESD) has been described as an example of training using the endoscopic training kit 1, but it may also be used for other training. For example, the endoscopic training kit 1 can also be used for training in other endoscopic treatments such as endoscopic mucosal resection (EMR). Furthermore, it can also be used for training in endoscopic examinations such as biopsies and cytology before and after these endoscopic treatments. Furthermore, in training in endoscopic examinations or endoscopic treatments using the endoscopic training kit 1, any energy device other than the electric scalpel 602 may be used.

[0073] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. Furthermore, the above-described embodiments are intended to illustrate the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is defined by the claims, not the embodiments. Various modifications made within the scope of the claims and the meaning of the invention equivalent thereto are considered to be within the scope of the present invention. [Industrial Applicability]

[0074] The present invention can be applied to training in endoscopic examination or endoscopic treatment. [Explanation of symbols]

[0075] 1 Endoscopy training kit, 10 housing, 11 housing legs, 12 housing upper part, 13 housing lower part, 14 housing engagement part, 20 mucosa model holder, 21 first holder, 22 second holder, 30 cylindrical rod, 40 insertion tubular body, 41 tubular body legs, 50 base, 60 endoscope cable, 70 high-frequency current generator, 71 return electrode, 72, 73 electric scalpel cable, 80 electrode device, 81 connection terminal, 82 connection cable, 83 connection clip, 201 elastic layer, 202 electrode sheet, 205 mucosa model, 206 notch, 207 connection pin, 208 valve model, 210 inner wall, 211, 221 joint surface, 601 injection needle, 602 electric scalpel, 2051 mucosal layer, 2052 submucosal layer, 2053 muscular layer, 6011 swelling fluid.

Claims

1. An endoscopy training kit used for training in endoscopic examination or endoscopic treatment of hollow organs, a mucosa model holder having a cylindrical inner wall therein and holding the mucosa model of the hollow organ on the inner wall; a housing that stores the mucosa model holder therein and supports the mucosa model holder so that the central axis of the cylindrical shape of the inner wall faces in a direction intersecting the vertical direction, The mucosa model holder has a first holder and a second holder separated from each other by a plane along the central axis of the cylindrical shape, and is configured such that the mucosa model can be stored inside by joining the first holder and the second holder to each other, and the mucosa model can be removed by separating the first holder and the second holder. Endoscopy training kit.

2. the first holder and the second holder each have an elastic layer having a predetermined thickness in a direction from the inner wall of the cylindrical shape toward the outer periphery; The endoscopy training kit according to claim 1 .

3. the first holder and the second holder each have an electrode sheet disposed on a surface of the inner wall and extending in a direction parallel to the central axis; The endoscopy training kit according to claim 1 .

4. The device further includes an electrode device to which a return electrode plate for use with an endoscopic energy device is attached, the first holder and the second holder of the mucosa model holder are provided with connection pins on their outer peripheries, the connection pins being electrically connected to the electrode sheets; The electrode device and the connection pins of the mucosa model holder are connected by a connection cable. The endoscopy training kit according to claim 3.

5. a cylindrical rod having a diameter smaller than the diameter of the inner wall of the mucosa model holder; the mucosa model has a predetermined thickness and elasticity, and has a rectangular shape; With the mucosal model wrapped around the cylindrical rod, the cylindrical rod is placed on the inner wall of one of the first holder and the second holder, and the other holder is used to cover the mucosal model. Thereafter, the cylindrical rod is removed in the direction of the central axis, whereby the mucosal model is placed on the inner wall of the mucosal model holder. The endoscopy training kit according to claim 1 .

6. an insertion tubular body having a tubular shape continuing from the inner wall of the mucosa model holder, through which an endoscope is inserted; The endoscopy training kit according to claim 1 .

7. the first holder and the second holder have a hollow semi-cylindrical shape, and an inner diameter of the mucosal model when the mucosal model is held on the inner walls of the first holder and the second holder is the same as an inner diameter of the hollow organ. The endoscopy training kit according to claim 1 .

8. The housing has a hollow semi-cylindrical housing upper and lower parts each having an inner diameter capable of storing the mucosa model holder without any gaps, and the mucosa model holder can be installed or removed by lifting the upper part of the housing relative to the lower part. The endoscopy training kit according to claim 1 .

9. a housing leg portion that supports the housing from below; and a tubular body leg portion that supports the insertion tubular body from below. The endoscopy training kit according to claim 6.

10. Two or more of the mucosa model holders are provided, The two or more mucosa model holders are arranged in a vertical row so that the directions of the central axes are aligned with each other. The endoscopy training kit according to claim 1 .

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