WO2006118207A1 - Upper respiratory airway insertion practicing device - Google Patents

Abstract

[PROBLEMS] To provide a simple and practicable upper respiratory airway insertion practicing device for securing an airway by using an upper respiratory airway capable of increasing skill by accurately reproducing troubles which may be produced when the upper respiratory air way or a trachea using the upper respiratory airway is inserted so that an operator can understand a proper method of using the upper respiratory airway. [MEANS FOR SOLVING PROBLEMS] This upper respiratory airway insertion practicing device comprises a pharynx groove part (2) of an upwardly opened recessed shape in cross section, a palate plate (3) vertically formed at one end of the pharynx groove part (2) and having a flat surface-shaped or a recessed surface-shaped palate surface, a rhinopharynx (8) opened near the connection part of the palate plate (3) to the pharynx groove part (2), a soft palate piece (4) suspended to the rhinopharynx (8), and a movable lower jaw part vertically formed at the center of the pharynx groove part (2).

Description

 Specification

 Upper airway airway training device

 Technical field

 The present invention relates to an upper airway airway insertion practice device that is inserted into a human upper airway, such as a laryngeal mask airway, and performs artificial respiration.

 Background art

 [0002] A tubular device that couples a ventilator and a patient's airway to ventilate the lungs is generally called an airway. Traditionally, endotracheal intubation, in which the airway is also inserted into the trachea under surveillance by a laryngoscope, has been used frequently. However, endotracheal intubation may be difficult to insert into the trachea. In addition, endotracheal intubation, in which an airway is inserted into a trachea that normally contains only gas, has a risk of damaging the airway epithelium by impairing capillary blood flow in the trachea, which is highly invasive to the human body. In addition, the laryngoscope and muscle relaxant used during endotracheal intubation may cause various complications.

 [0003] Therefore, in recent years, airways above the glottis, that is, not staying in the upper airway and inserted into the trachea, such as the Laryngeal Mask Airway and the esophageal closed airway, have been developed. (See Non-Patent Document 1).

 [0004] The laryngeal mask airway is the earliest among the several types of upper airway airways and has been most widely used in clinical practice. FIG. 12 is a view showing a state in which the laryngeal mask 'airway 100 is attached to the patient's head 200. In Fig. 12, the respiratory system around the patient's head 200 is shown, with the larynx 201, oral cavity 202, pharynx 203, esophagus 204, anterior dentition 205, hard palate 206, soft palate 207, nasopharynx 208, the epiglottis 209, the laryngeal vestibule 210, and the trachea 211 are shown. The laryngeal mask 'airway 100 includes an air tube 101, a cuff 102, and an inflating tube 103.

The airway tube 101 is a tube that couples a ventilator (not shown) and the larynx 201 to ventilate the air in the lung, and is inserted from the oral cavity 202 to reach the lower part of the pharynx 203. The cuff 102 is an annular air sac that surrounds the tip of the airway tube 101. The cuff 102 is in close contact with the wall of the pharynx 203, and the larynx 201 and the airway tube 101 are hermetically connected to each other. It functions as a seal that prevents the air flowing through the tube 101 from leaking into the esophagus 204 and pharynx 203 other than the trachea 211. The cuff 102 is deaerated and inserted into the pharynx 203 in a deflated state, positioned at a normal position, and then inflated by injecting air with a pump (not shown) through the inflating tube 103. Further, when the airway tube 101 is removed from the pharynx 203, the air in the cuff 102 is discharged through the inflating tube 103.

 [0006] When inserting the laryngeal mask 'airway 100 into the patient's pharynx 203, press the back of the cuff 102 against the hard palate 206 with appropriate force and orientation, and attach the tip of the cuff 102 to the hard palate 206. In this manner, slide along the curve of the hard palate 206 and the soft palate 207, guide it to the lower part of the pharynx 203, and push it in until the operator feels that the cuff 102 hits the bottom of the pharynx 203.

 As described above, the airway tube 101 is inserted into the pharynx 203 of the patient by the operator, but it is difficult to practice an appropriate insertion method only by reading the explanation of the insertion procedure. This is because the strength of the force required to bring the cuff 102 into close contact with the hard palate 206 and the direction in which the force that changes with the insertion process is applied are not fully understood by verbal explanation alone. Improper insertion can cause the cuff 102 to be inserted in an undesirable location, causing various problems. For example, if the cuff 102 enters the laryngeal vestibule 210 or the nasopharynx 208, the air tube 101 and the trachea 211 are not coupled, making ventilation difficult. Further, if the cuff 102 is not inserted sufficiently, the air flowing through the airway tube 101 leaks to the pharynx 203 and the esophagus 204, so that efficient ventilation cannot be performed. Also, repeated insertion and removal for accurate positioning of the cuff 102 causes trauma and harmful reflections. Therefore, it is necessary for the surgeon to acquire a technique that enables the cuff 102 to be accurately positioned by groping, and training equipment has been proposed.

 [0008] For example, Patent Document 1 discloses an auxiliary device for performing insertion training of the laryngeal mask 'airway 100 using the doll for tracheal intubation training disclosed in Patent Document 2 and the like. Patent Document 3 discloses a doll for performing insertion training of the laryngeal mask “airway 100”.

Patent Document 1: Japanese Utility Model Publication No. 7-33350 Patent Document 2: JP 59-30582

 Patent Document 3: Japanese Unexamined Patent Publication No. 2000-214765

 Non-patent literature l: JR Brimacombe et al., Translated by Keisuke Amaha, “All about laryngeal mask”, Diagnosis and Treatment, 1998, pp.1-26

 Disclosure of the invention

 Problems to be solved by the invention

 [0009] The doll disclosed in Patent Document 1 and the like (hereinafter referred to as "conventional doll") faithfully reproduces the shape of the larynx 201, trachea 211, etc., so that it can be used for actual endotracheal intubation. There is an advantage that you can have a close experience. However, since the face and skin are also reproduced, there is a problem that the apparatus is large and expensive. In addition, since it is difficult for the user to visually recognize the insertion process during practice, understanding of the behavior of the airway tube 101 and the deformation of the cuff 102 in the pharynx 203 is hindered. .

 [0010] In addition, since traditional dolls are primarily intended for endotracheal intubation training, they are not sufficient for training of the laryngeal mask 'Airway 100, and it is difficult for the surgeon to understand the correct insertion method. . In addition, the following troubles peculiar to the laryngeal mask 'Airway 100' are not reproduced faithfully, and sufficient practice effects cannot be obtained! / With nephew! There is a problem.

 (1) Trouble that the cuff 102 hitting the pharynx 203 is turned back through the hard palate 206 and the soft palate 207, and it enters the nasopharynx 208.

 (2) Trouble where the cuff 102 is placed inside the pharynx 203 with the cuff 102 turned over and the edge of the cuff 102 turned over.

 (3) A trouble in which the leading edge of the cuff 102 hits the front upper tooth row 205 and the leading edge of the cuff 102 is turned over.

 (4) Trouble that the tip of the cuff 102 gets into the laryngeal vestibule 210 due to improper preparation or insertion procedure of the cuff 102 before insertion.

[0011] In addition, in the conventional doll, the soft palate 207 is made of a hard material, and the shape of the soft palate 207 in a state where a human stands up (the state where the tip of the soft palate 207 hangs down under the foot due to gravity) is modeled. It has become. When inserting the laryngeal mask 'Airway 100 with this doll, the cuff 102 is guided by the model of the soft palate 207 and smoothed under the pharynx 203. Led by On the other hand, since the insertion of the actual laryngeal mask 'airway 100 is performed with the patient lying down, the tip of the soft palate 207 hangs down toward the occipital region. Since the soft palate 207 is relaxed due to a decrease in patient consciousness or administration of a muscle relaxant, it also deforms when the linear mask 'airway 100 is pressed. For this reason, the laryngeal mask airway 100 is not smoothly guided to the pharynx 203 and enters the nasopharynx 208. That is, there is a problem that such a phenomenon cannot be accurately reproduced with a conventional doll.

[0012] The present invention has been made in view of such circumstances, and it is possible to accurately reproduce the trouble that occurs when the upper airway airway is inserted and to allow the operator to understand an appropriate insertion method. An object of the present invention is to provide a simple and practical upper airway insertion practice device. Means for solving the problem

 [0013] The first configuration of the upper airway airway insertion practice device of the present invention is an upper airway airway insertion practice device for performing training for inserting the upper airway airway into the upper airway, the upper side of which is open. A pharyngeal groove portion formed in a curved surface without a palate, a palate member standing on one end of the pharyngeal groove and having a palate-shaped surface that opens toward the other end side, and the pharyngeal groove portion of the palate member A nasopharyngeal opening that opens in the vicinity of the connecting portion, and a soft palate-shaped soft palate piece that hangs down from the nasopharyngeal opening.

 [0014] According to this configuration, the human organ existing in the insertion path of the upper airway airway is modeled to the extent necessary and sufficient for the practice of the upper airway airway insertion. Effective practice of this becomes possible.

 [0015] When the hard palate arch is tall (large curvature! /), It is difficult to slide the cuff along the hard palate, so the upper airway airway approaches the mouth slightly diagonally. The proach method is adopted, but if the groove inner surface of the palate member is formed into a palate shape that simulates the human palate, the behavior of the upper airway airway can be accurately reproduced when the slight lateral approach method is executed. Here, the palate shape is a concave curved shape with a central portion recessed with respect to the peripheral portion, the horizontal cross-sectional shape of the palate member is the curvature on the frontal surface of the human hard palate, and the vertical cross-sectional shape is the curvature on the sagittal surface. Each is simulated.

[0016] It should be noted that the shape of the palate on the inner surface of the groove of the palate member may be formed in a flat shape connected by a concave curved surface. There are individual differences in the arch (curvature) of the human hard palate, which may be simulated on a flat surface. The The pharyngeal groove is rounded at the corners of the cross section and formed into a curved surface with no corners, so that it accurately simulates the cross-sectional shape of the human pharynx, thus improving the practice effect.

 [0017] A second configuration of the upper airway airway insertion practice device of the present invention is characterized in that, in the first configuration, the soft palate piece is formed of a flexible member.

[0018] According to this configuration, since the soft palate piece is formed of the flexible member, it is possible to reproduce the trouble that the upper airway airway pushes up the soft palate and gets into the nasopharynx, thereby improving the practice effect. Here, the flexible member is not limited to rubber. A material capable of reproducing the flexibility of the human soft palate can be appropriately selected and used.

[0019] In the third configuration of the upper airway airway insertion practice device of the present invention, in the first or second configuration, the pharyngeal groove portion on the opposite side to the side where the palate member is erected A pharyngeal front plate, which is a plate that covers a part of the pharynx, is provided.

[0020] According to this configuration, since the pharyngeal front plate simulating the anterior wall of the human pharynx is provided, and a partial cross section of the pharyngeal groove is a closed cross section, it is possible to reproduce the trouble that the cuff is bent in the pharynx. The learning effect is improved.

 [0021] In the fourth configuration of the upper airway airway insertion practice device of the present invention, in the third configuration, the pharyngeal front plate includes a lump-shaped laryngeal piece protruding toward the inside of the pharyngeal groove. It is characterized by.

[0022] According to this configuration, since the laryngeal piece is provided on the pharyngeal front plate to simulate the human larynx, it is possible to confirm by touch that the force does not advance when it hits the larynx, and the insertion process is completed. improves.

 [0023] The fifth configuration of the upper airway airway insertion practice device of the present invention is that, in the fourth configuration, the laryngeal piece extends from the bottom surface of the pharyngeal groove to the direction of the nasopharyngeal opening. It is characterized by the formation of a laryngeal mouth that is an opening hole.

 [0024] According to this configuration, the laryngeal piece has the laryngeal mouth and simulates the cavity of the human larynx, so that the trouble of the cuff getting into the larynx can be reproduced, and the practice effect is improved.

[0025] A sixth configuration of the upper airway airway insertion practice device of the present invention is the fifth configuration, wherein, in the fifth configuration, the laryngeal mouth in a bent state on the side of the laryngeal piece facing the nasopharyngeal opening. Equipped with a flexible laryngeal piece that is sized to substantially close the opening. It is characterized by.

 [0026] When the upper airway airway is actually inserted into a person's upper airway, the epiglottis is pushed and bent by the upper airway way to close the larynx, and the upper airway airway may not be properly installed . According to the sixth configuration, the epiglottis is simulated by the epiglottis piece, and an abnormal wearing state in which the epiglottis piece closes the laryngeal mouth when the upper airway airway is inserted can also be simulated. Therefore, it is possible to carry out upper airway airway insertion training in accordance with more actual cases. At the same time, tracheostomy can be performed using the upper airway airway, but tracheostomy becomes difficult when the epiglottis closes the pharyngeal mouth. Therefore, it is possible to practice tracheal intubation using the upper airway airway according to the actual case.

 [0027] In a seventh configuration of the upper airway airway insertion practice device of the present invention, in the first to fifth configurations, the upper end of the palate member is linear or isolated toward the pharyngeal groove. The upper dentition protrusion which is a protrusion formed in the shape is formed.

 [0028] According to this configuration, since the upper dent row projection is provided at the upper end of the palate member and simulates the upper dent row of a human, the cuff turning up in the oral cavity, which is likely to occur in a human body with anterior teeth, can be accurately performed. Can be reproduced, improving the practice effect.

 [0029] In an eighth configuration of the upper airway airway insertion practice device of the present invention, in the sixth configuration, a plurality of upper dent row protrusions having different shapes or dimensions are provided. The pallet member is detachably connected to the palate member.

 [0030] There are individual differences in the shape and size of the dentition, and some or all of the teeth may be missing. If there are no teeth at all, the upper airway airway can be easily attached to the hard palate, making insertion easier. On the other hand, if the teeth are long or if the teeth are non-uniform, it is difficult to make the upper airway airway adhere to the hard palate, making it difficult to insert properly. According to this configuration, since the plurality of upper dent protrusions having different shapes or sizes are attached / detached / replaced independently, anatomical individual differences such as tooth shape 'size and presence / absence of teeth, and the accompanying upper airway airway Differences in the difficulty of insertion are reproduced, and practice according to the difficulty becomes possible.

[0031] In a ninth configuration of the upper airway airway insertion practice device of the present invention, in the first to seventh configurations, the palate member rotates around the connection portion with respect to the pharyngeal groove portion. Solid It is characterized by being connected freely.

 [0032] According to this configuration, since the palatal member is pivotally and fixedly connected to the pharyngeal groove, it is possible to practice insertion by simulating the difference in the angle of the patient's head and neck, Practice effect is improved.

 [0033] A tenth configuration of the upper airway airway insertion practice device of the present invention includes the plurality of palate members having different shapes or sizes in the first to eighth configurations, and the palate member is the It is characterized in that it is detachably connected to the pharyngeal groove.

 [0034] There are individual differences in the shape and size of the hard palate, and patients with a large curvature of the hard palate and patients with a pronounced concave or convex surface of the hard palate have insufficient cuff pressure on the hard palate. This method is difficult to insert. According to this configuration, the palatal member having a different shape and dimension can be replaced and practice can be performed while changing the conditions up to a form in which the formability that is easy to insert is difficult, so that the practice effect is improved.

 [0035] An eleventh configuration of the upper airway airway insertion practice device of the present invention includes a plurality of soft palate pieces having different shapes, sizes, or hardness in the first to ninth configurations, The soft palate piece is detachably connected to the palate member.

 [0036] There are individual differences in the shape and hardness of the soft palate, and the hardness of the soft palate changes depending on the level of consciousness of the patient and the administered drug. According to this configuration, it is possible to reproduce the difference in the difficulty of insertion due to such differences between individuals and consciousness levels, so that the practice effect is improved.

 [0037] A twelfth configuration of the upper airway airway insertion practice device of the present invention is characterized in that in the first to tenth configurations, a part or all of the configuration members are configured by a transparent member.

 [0038] According to this configuration, since some or all of the constituent members are made of transparent members, the behavior of the airway tube and the cuff deformation in the upper airway airway insertion practice device can be directly observed, improving the practice effect. To do.

[0039] In the thirteenth configuration of the upper airway airway insertion practice device of the present invention, in the first to twelfth configurations, the palate portion is provided on the side of the pharyngeal groove portion where the palate member is erected. A lower jaw member that is erected opposite to the material and has a surface that faces the palate member in a shape simulating a tongue surface, and the upper end of the lower jaw member is linearly directed toward the palate member. A lower dentition protrusion, which is a protrusion formed in the shape of a circle or an arc, is formed.

[0040] As described above, by placing the lower jaw member formed with the lower dentition protrusion and the tongue surface facing the palate member, it is possible to practice insertion of the upper airway airway in the state where the lower jaw is present. It becomes possible. Therefore, when beginners practice, insertion practice can be performed in a state closer to the actual human body.

 The invention's effect

 [0041] As described above, the upper airway airway insertion practice device of the present invention requires an organ related to the insertion of the upper airway airway among the organs from the human oral cavity to the larynx for the upper airway airway insertion practice. Model enough! Therefore, the trouble that occurs when the upper airway airway is inserted can be accurately reproduced, allowing the operator to understand the appropriate insertion method and improving the skill. Further, since the upper airway insertion practice device of the present invention is composed of relatively simple parts, it is easy to manufacture, can be provided at low cost, and contributes to the popularization of the upper airway airway.

 Brief Description of Drawings

 FIG. 1 is a three-side view of an upper airway airway insertion practice device according to Embodiment 1 of the present invention.

 FIG. 2 is a perspective view of the upper airway airway insertion practice device according to the first embodiment.

 FIG. 3 is a diagram showing a relationship between an upper airway airway insertion practice device according to Example 1 and a human respiratory organ.

 FIG. 4 is a perspective view showing a modified example of the upper airway airway insertion practice device according to the first embodiment.

 FIG. 5 is a perspective view showing a state where the upper airway airway is correctly inserted into the upper airway airway insertion practice device according to the first embodiment.

 FIG. 6 is a side view showing another modification of the upper airway airway insertion practice device according to the first embodiment.

FIG. 7 is a plan view and a sectional view showing an upper airway airway insertion practice device according to Embodiment 2 of the present invention. FIG. 8 is a plan view and a sectional view showing an upper airway airway insertion practice device according to Embodiment 2 of the present invention.

 FIG. 9 is a perspective view of the lower jaw member 15 in FIGS. 7 and 8.

 FIG. 10 is a perspective view of the upper airway airway insertion practice device 1 ′ in FIGS. 7 and 8.

 FIG. 11 is a perspective view showing a modification of the upper airway airway insertion practice device 1 according to the second embodiment.

 FIG. 12 is a view showing a state in which a laryngeal mask 'airway is attached to a patient.

Explanation of symbols

 1, 1 'Upper airway airway insertion practice device

 2 Pharyngeal groove

 3, 3 'palate

 4 Soft palate pieces

 5 Pharyngeal front plate

 6, 6 'laryngeal fragment

 7, 7 'Upper teeth

 8 Nasopharyngeal opening

 9 Laryngeal mouth

 10 Butterfly nut

 15 Mandibular member

 16 Lower teeth

 17 Tongue

 17a Tongue

 18 epiglottis

 19 Positioning groove

 20 Wing nut

 100 laryngeal mask 'Airway

101 airway tube 103 Inflating tube

 200 patient's head

 201 larynx

 202 oral cavity

 203 Pharynx

 204 Esophageal

 205 front upper dentition

 206 Hard palate

 207 Soft palate

 208 Nasopharynx

 209 epiglottis

 210 Larynx vestibule

 211

 BEST MODE FOR CARRYING OUT THE INVENTION

 The best mode for carrying out the present invention will be described below with reference to the drawings.

 Example 1

 FIG. 1 is a three-sided view of an upper airway airway insertion practice device according to Example 1 of the present invention,

 (a) is a side view, (b) is a plan view, and (c) is a rear view as seen from line A—A in (a). FIG. 2 is a perspective view of the above airway airway insertion practice device. FIG. 3 is a view showing the relationship between the upper airway air insertion practice device and the human respiratory organ. As shown in FIG. 1 and FIG. 2, the upper airway airway insertion practice device 1 includes a pharyngeal groove 2, a palate member 3, a soft palate piece 4, a pharyngeal front plate 5, and a laryngeal piece 6.

[0046] The pharyngeal groove 2 is formed in a groove shape that simulates the human pharynx 203. The pharyngeal groove 2 is made of a member made of hard plastic (thermosetting resin, styrene resin, acrylic resin, polypropylene, etc.) or semi-rigid plastic (polyethylene, fluorine resin, etc.). The bottom surface of the pharyngeal groove 2 corresponds to the rear wall of the pharynx 203, and the side surface corresponds to the side wall of the pharynx 203. The groove in the pharyngeal groove 2 is shaped into a curved surface with no corners, and the cross-sectional shape is U-shaped. It mimics the cross-sectional shape of the human pharynx 203. The groove width of the pharyngeal groove 2 is substantially the same as the diameter of the human pharynx 203. The pharyngeal groove 2 also serves as a base for the upper airway airway insertion practice device 1.

 The palatal member 3 is erected on one end of the pharyngeal groove 2 (hereinafter, this end is referred to as “rear end” and the opposite end is referred to as “front end”). The pharyngeal groove 2 is formed in a spoon-like concave curved surface that opens and opens in the direction of the front end, simulating a human hard palate 206. The palate member 3 is also made of a hard plastic or semi-rigid plastic member. On the upper end of the palate member 3, an upper dent row projection 7 simulating a human front upper dent row 205 is formed. In addition, a nasopharyngeal opening 8 simulating a human nasopharyngeal cavity 208 is opened at the lower end of the palate member 3, that is, in the vicinity of the connection portion with the pharyngeal groove 2. A rubber soft palate piece 4 simulating a human soft palate 207 is attached to the nasopharyngeal opening 8 to block a part of the nasopharyngeal opening 8. A recess having a depth corresponding to the thickness of the soft palate piece 4 is formed around the nasopharyngeal opening 8, and the soft palate piece 4 is fitted into the recess. The material of the soft palate piece 4 is not limited to rubber, and various materials having appropriate flexibility for simulating the human soft palate 207 can also be selected.

 [0048] A pharyngeal front plate 5 on a flat plate is provided on the front end side of the pharyngeal groove 2 so as to cover the pharyngeal groove 2. The pharyngeal front plate 5 simulates the front wall of the human pharynx 203 (more precisely, the posterior surface of the tongue and the region including the tongue base). The pharyngeal front plate 5 is made of a transparent acrylic plate, and the inside of the pharyngeal groove 2 can be observed through the pharyngeal front plate 5.

 [0049] On the front end side of the pharyngeal groove part 2, a laryngeal piece 6 is formed in a lump shape so as to protrude toward the groove inner side of the pharyngeal groove part 2. The laryngeal piece 6 is a small block of hard plastic, and is adhered and fixed to the pharyngeal front plate 5. The laryngeal piece 6 simulates a larynx 201 protruding from a human pharynx 203.

FIG. 4 is a perspective view showing a modified example of the upper airway airway insertion practice device 1 according to the first embodiment. This modification is characterized in that the laryngeal piece 6 is formed with a laryngeal mouth 9 that opens in the direction from the bottom surface of the pharyngeal groove 2 to the direction of the nasopharyngeal opening 8. The laryngeal mouth 9 simulates the laryngeal cavity of the human larynx 201 (the space from the laryngeal vestibule 210 to the trachea 211)! By providing this laryngeal mouth 9, the trouble that the cuff 102 gets into the larynx 201 can be reproduced. The

 FIG. 5 is a perspective view showing a state in which the laryngeal mask 'airway 100 is correctly inserted into the upper airway airway insertion practice device 1 according to the first embodiment. As shown in FIG. 5, in the normal wearing state, the cuff 102 of the laryngeal mask 'airway 100 is positioned to wrap the laryngeal piece 6. In this state, when the cuff 102 is inflated with air, the cuff 102 comes into close contact with the pharyngeal front plate 5 and the laryngeal mask 'airway 100 is tightly coupled with the human larynx 201 (see Fig. 12). Simulated.

 FIG. 6 is a side view showing another modification of the upper airway insertion practice device 1 according to the first embodiment. In this modification, the pharyngeal groove 2 and the palate member 3 are configured as separate parts. The palate member 3 is pivotally supported by the pharyngeal groove 2, and the angle formed by the palate member 3 and the pharyngeal groove 2 can be changed. The wing nut 10 is a nut for fixing the palate member 3 at an arbitrary angle. The means for fixing the palate member 3 at an arbitrary angle is not limited to the wing nut 10, and various known means can be appropriately selected and used.

 [0053] When inserting the laryngeal mask 'airway 100, the neck force is usually bent and the head is pushed out (sniffing position) so that the axial force between the oral cavity 202 and the pharynx 203 is 0 ° or more. Like that. However, the angle formed by the axis of the oral cavity 202 and the pharynx 203 may not necessarily be 90 ° due to differences in the patient's physique. Therefore, if the angle between the palatal member 3 and the pharyngeal groove 2 is changed in various ways and the practice of inserting the laryngeal mask 'airway 100' is practiced, the practice effect is further improved.

[0054] There are individual differences in the shape and size of the front upper tooth row 205. Also, some or all of the teeth may be missing. Therefore, the upper dent row protrusion 7 is configured as a member separate from the palate member 3, and the upper dent row protrusion 7 is detachable from the palate member 3. In addition, a plurality of upper tooth protrusions 7 having different dimensions and shapes are provided, and the upper tooth protrusions 7 can be replaced. If you practice insertion while exchanging these upper dent protrusions 7, you can practice under different conditions, so the training effect will improve. In addition, if the upper dent row projection 7 is removed, it is possible to simulate a patient in which all the teeth have fallen. The means for detachably connecting the upper dent row projection 7 to the palate member 3 may be appropriately selected from known fastening means such as a clip using a screw or a panel. [0055] In addition, the size and shape of the hard palate 206 vary among individuals and varies greatly depending on the patient. On the other hand, the laryngeal mask airway 100 is inserted by pressing the cuff 102 against the hard palate 206 and sliding the cuff 102 along the arcuate curve of the hard palate 206. Therefore, the difficulty of inserting the laryngeal mask 'airway 100 varies depending on the size and shape of the hard palate 206. Therefore, if a plurality of palate members 3 having different dimensions and shapes are prepared and the insertion practice is performed while replacing the palate member 3, the practice can be performed under different conditions, and the practice effect is improved.

 [0056] In addition, the size and shape of the soft palate 207 vary among individuals and varies greatly depending on the patient. In addition, the hardness of the soft palate 207 varies depending on the patient's level of consciousness and the administered drug. That is, if the patient's level of consciousness is low, the soft palate 207 relaxes and softens. Further, the risk of the force 102 entering the nasopharynx 208 varies depending on the size, shape or hardness of the soft palate 207. Therefore, by preparing a plurality of soft palate pieces 4 of different sizes, shapes, and hardness and practicing insertion while replacing the soft palate pieces 4, it is possible to practice under different conditions, so the practice effect is improved.

 [0057] The soft palate piece 4 is fitted and fixed in the recess formed in the palate member 3 by the elasticity of the soft palate piece 4 itself, but supplementarily using an adhesive, a double-sided tape, and a hook-and-loop fastener. You can detachably connect to palate member 3! /.

 [0058] In the present embodiment, an example in which the upper airway airway insertion practice device 1 is made of hard plastic (or semi-rigid plastic), an acrylic plate, or the like has been described. However, the upper airway way insertion practice device according to the present invention is shown. These materials are not limited to these. Various materials can be appropriately selected and used. For example, if materials that can reproduce the softness of the actual pharynx 203, etc. are used for the pharyngeal groove 2, palate member 3, pharyngeal front plate 5, laryngeal piece 6, etc., insertion practice closer to reality becomes possible. Further, if not only the pharyngeal front plate 5 but also other components are made of a transparent material, the behavior of the airway tube 101 and the deformation of the cuff 102 can be more easily observed.

 [0059] Further, the upper airway airway insertion practice device according to the present invention can be used not only for laryngeal mask airway, but also for other upper airway airway practice (for example, esophageal closed airway).

Example 2 FIG. 7 and FIG. 8 are a plan view and a cross-sectional view showing the upper airway airway insertion practice device 1 ′ according to Embodiment 2 of the present invention. 7 (a) is a side view, FIG. 7 (b) is a plan view, and FIG. 7 (c) is a cross-sectional view taken along the line CC in FIG. 7 (b). Fig. 8 (a) is a rear view taken along line AA in Fig. 7 (a), and Fig. 8 (b) is a sectional view taken along line BB in Fig. 7 (a).

 FIG. 9 is a perspective view of the lower jaw member 15 of FIGS. FIG. 10 is a perspective view of the upper airway insertion practice device 1 ′ of FIGS. 7 and 8.

 [0062] In the upper airway airway insertion practice device 1 'according to the second embodiment, the pharyngeal groove 2, soft palate piece 4, pharyngeal front plate 5, nasopharyngeal opening 8, and lumen laryngeal mouth 9 Since it is the same as that of the first embodiment, the same reference numerals are given and description thereof is omitted.

 [0063] In Example 2, the dentition-like upper dentition 7 'of the palate member 3' is similar to the upper dentition of an actual human, as shown in Fig. 8 (a). It is formed so as to have a bow shape. As a result, the practice of inserting the upper airway airway can be performed in a more realistic state.

 [0064] Further, as shown in Fig. 8 (b), the laryngeal piece 6 'is formed as a smooth curved surface by eliminating the corners of both sides of the surface facing the bottom surface of the pharyngeal groove portion 2, so that the actual human larynx is obtained. The shape is close to. Thus, by making the lower surface of the laryngeal piece 6 ′ a curved surface without corners, the state when the upper airway airway is fixed to the larynx can be reproduced in a more realistic state. At the same time, the state of tracheal intubation using the upper airway way can be reproduced more realistically.

 Furthermore, in Example 2, the lower jaw member 15 is erected on the rear side where the palatal member 3 ′ of the pharyngeal groove 2 is erected so as to face the palatal member 3 ′. At the upper end of the lower jaw member 15, a lower dent protrusion 16 is formed in an arch shape by directing force toward the palate member 3 ′. The lower jaw member 15 simulates a human lower jaw, and the lower dentition process 16 imitates a human lower dentition. Further, on the surface of the lower jaw member 15 facing the palate member 3 ′, a tongue portion 17 simulating a human tongue is formed inside the lower dentition protrusion 16. The tongue surface 17a, which is the surface of the tongue portion 17 facing the palate member 3 ', is substantially the same height as the upper surface of the lower dentition protrusion 16.

FIG. 11 is a perspective view showing a modified example of the upper airway airway insertion practice device 1 according to the second embodiment. In this modified example, the pharyngeal groove 2 and the lower jaw member 15 are configured as separate parts. The lower jaw member 15 is pivotally supported by the pharyngeal groove 2 in the positioning groove 19, and the angle formed by the lower jaw member 15 and the pharyngeal groove 2 is freely changeable. The wing nut 20 is optional for the lower jaw member 15. It is a nut for fixing to the angle. The means for fixing the lower jaw member 15 at an arbitrary angle is not limited to the wing nut 20, and various known means can be appropriately selected and used. In this embodiment, the upper airway airway insertion practice device 1 ′ may be composed of hard plastic (or semi-rigid plastic), acrylic board, etc., but other various materials may be selected and used as appropriate. Can do. For example, if materials that can reproduce the softness of the actual pharynx 203 are used for the pharyngeal groove 2, palatal member 3, pharyngeal front plate 5, laryngeal piece 6, mandibular member 15, tongue 17 etc., it is closer to reality. Insertion practice becomes possible. Further, if not only the pharyngeal front plate 5 but also other components are made of a transparent material, the behavior of the airway tube 101 and the deformation of the cuff 102 can be more easily observed.

Claims

The scope of the claims  [1] An upper airway airway insertion training device for training to insert an upper airway airway into the upper airway,  A pharyngeal groove formed on a curved surface with no corners open on the upper side;  A palatal member having a palate-shaped surface that is erected on one end of the pharyngeal groove portion and that opens toward the other end side by force.  A nasopharyngeal opening that opens in the vicinity of the connecting portion of the palate member with the pharyngeal groove, and a soft palate-shaped soft palate piece that hangs down to the nasopharyngeal opening;  Upper airway airway insertion practice device equipped with.  [2] The upper airway airway insertion practice device according to [1], wherein the soft palate piece is formed of a flexible member. [3] The pharyngeal front plate, which is a plate that covers a part of the pharyngeal groove on the side opposite to the side on which the palate member is erected, is provided. Upper airway airway insertion practice device. 4. The upper airway airway insertion practice device according to claim 3, wherein the pharyngeal front plate includes a lump-shaped laryngeal piece that protrudes toward the inside of the pharyngeal groove. [5] The laryngeal piece is formed with a laryngeal mouth, which is a hole that opens by force in the direction from the bottom of the pharyngeal groove to the direction of the nasopharyngeal opening. Upper airway airway insertion practice device. [6] A laryngeal piece formed into a flexible thin plate having a size that substantially closes the opening of the laryngeal mouth in a bent state on the side facing the nasopharyngeal opening of the laryngeal piece The upper airway airway insertion practice device according to claim 5, further comprising: [7] The upper dentition protrusion, which is a protrusion formed in a straight line shape or an isolated shape by urging toward the pharyngeal groove portion side, is formed on the upper end of the palate member. The upper airway airway insertion practice device according to claim 6. [8] While having a plurality of the above upper dent protrusions having different shapes or dimensions, 8. The upper airway airway insertion practice device according to claim 7, wherein the upper dentition protrusion is detachably connected to the palate member. [9] The upper airway according to any one of claims 1 to 8, wherein the palatal member is connected to the pharyngeal groove portion so as to be rotatable and fixed around the connecting portion. A way insertion practice device.  [10] A plurality of palate members having different shapes or dimensions,  10. The upper airway airway insertion practice device according to claim 1, wherein the palate member is detachably connected to the pharyngeal groove. [11] A plurality of the soft palate pieces having different shapes, dimensions or hardnesses,  11. The upper airway airway insertion practice device according to claim 1, wherein the soft palate piece is detachably connected to the palate member. [12] The upper airway airway insertion practice device according to any one of claims 1 to 11, characterized in that a part or all of the constituent members are made of a transparent member. [13] The lower jaw in which the palatal member of the pharyngeal groove is erected on the side facing the palatal member, and the surface facing the palatal member is shaped like a tongue surface With components  The lower dentition protrusion which is a processus | protrusion formed in the linear form or the arc shape by urging toward the palate member side is formed in the upper end of the said lower jaw member, The Claim 1 thru | or 12 characterized by the above-mentioned. The upper airway airway insertion practice device as described in any of the above.