Gastrointestinal anastomosis training kit

Abstract

To provide a digestive tract anastomosis training kit by which a user can train anastomosis of a digestive tract.SOLUTION: A digestive tract anastomosis training kit 1 is used for training anastomosis between a first digestive tract and a second digestive tract having a smaller inner diameter than that of the first digestive tract. The digestive tract anastomosis training kit 1 includes: a first tube 2 as a model of the first digestive tract and a second tube 3 as a model of a second digestive tract, the second tube having a smaller inner diameter than that of the first tube.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a gastrointestinal anastomosis training kit.

Background Art

[0002] Conventionally, an organ model for surgical training has been known (see Patent Document 1 below).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The organ model as described in Patent Document 1 can only reproduce the texture of the organ and is difficult to use for training assuming an actual surgical procedure.

[0005] For example, when closing the artificial anus after temporary artificial anus construction, the inner diameter of the intestinal tube on the oral side and the inner diameter of the intestinal tube on the anal side may be different, and the difficulty of anastomosis is high. Therefore, training assuming an actual surgical procedure is desired.

[0006] The present invention provides a gastrointestinal anastomosis training kit capable of training the anastomosis of the gastrointestinal tract.

Means for Solving the Problems

[0007] The present invention [1] is a gastrointestinal anastomosis training kit used for training the anastomosis of a first gastrointestinal tract and a second gastrointestinal tract, including a first tube that is a model of the first gastrointestinal tract, and a second tube that is a model of the second gastrointestinal tract and has an inner diameter smaller than the inner diameter of the first tube.

[0008] This configuration includes a first tube and a second tube having an inner diameter smaller than the inner diameter of the first tube.

[0009] Therefore, training in anastomosis between the first and second tubes allows for training in anastomosis between the first digestive tract and the second digestive tract, which has a smaller inner diameter than the first digestive tract.

[0010] The present invention [2] includes the gastrointestinal anastomosis training kit of [1], wherein the first and second gastrointestinal tracts are the gastrointestinal tracts of a low birth weight infant, and the second gastrointestinal tract is the gastrointestinal tract more anal than the first gastrointestinal tract.

[0011] This configuration allows for training in the complex gastrointestinal anastomosis procedure for low-birth-weight infants.

[0012] The present invention [3] includes the gastrointestinal anastomosis training kit according to [1] or [2] above, wherein the difference between the inner diameter of the first tube and the inner diameter of the second tube is 5 mm or more.

[0013] This configuration allows for training in anastomosis procedures between gastrointestinal tracts with significant differences in inner diameter.

[0014] The present invention [4] includes any one of the gastrointestinal anastomosis training kits described in [1] to [3] above, wherein the first tube and the second tube are made of a soft resin.

[0015] With this configuration, it is possible to obtain first and second tubes that have viscoelastic properties similar to those of the actual intestinal tract.

[0016] The present invention [5] further includes any one of the gastrointestinal anastomosis training kits described in [1] to [4] above, comprising a support for supporting the first tube and the second tube, the support being a model of the surgical field.

[0017] According to such a configuration, by setting the first tube and the second tube on the support base and performing training, training can be carried out assuming the actual surgical field.

[0018] The present invention [6] further includes an air introduction device for introducing air into the anastomosed first tube and second tube, and at least one of the first tube and the second tube has a connection portion connectable to the air introduction device, and includes the gastrointestinal anastomosis training kit according to any one of [1] to [5] above.

[0019] According to such a configuration, the anastomosed first tube and second tube can be connected to the air introduction device, and air can be sent into the anastomosed first tube and second tube.

[0020] Thereby, when measuring the pressure (leak pressure) when air begins to escape from the anastomosis portion between the first tube and the second tube, it is possible to confirm whether the anastomosis between the first tube and the second tube is appropriate.

[0021] The present invention [7] further includes a container capable of storing water and immersing the anastomosed first tube and second tube in the stored water, and includes the gastrointestinal anastomosis training kit according to [6] above.

[0022] According to such a configuration, when measuring the leak pressure in a state where the anastomosed first tube and second tube are immersed in water, the leaked air becomes bubbles.

[0023] Thereby, when the anastomosis between the first tube and the second tube is insufficient, the portion where the anastomosis is insufficient can be specified by the bubbles.

Effect of the Invention

[0024] According to the gastrointestinal anastomosis training kit of the present invention, gastrointestinal anastomosis surgery can be trained.

Brief Description of the Drawings

[0025] [Figure 1] Figure 1 is a configuration diagram of a gastrointestinal anastomosis training kit. [Figure 2] Figure 2 is a cross-sectional view of the first tube and the second tube shown in Figure 1. [Figure 3] Figure 3 shows a state in which the first tube and the second tube shown in Figure 1 are set on the support base. [Figure 4] Figure 4 shows a state in which the first tube and the second tube shown in Figure 3 are anastomosed. [Figure 5] Figure 5 is an explanatory diagram for explaining the leak test of the anastomosed first tube and second tube. [Figure 6] Figure 6 is a correlation diagram showing the correlation between the number of experiences of intestinal anastomosis in low birth weight infants and the leak pressure measured by the leak test shown in Figure 5.

Mode for Carrying Out the Invention

[0026] 1. Gastrointestinal anastomosis training kit The configuration of the gastrointestinal anastomosis training kit 1 will be described.

[0027] The gastrointestinal anastomosis training kit 1 shown in Figure 1 is used for training the anastomosis of the first gastrointestinal tract and the second gastrointestinal tract. The inner diameter of the second gastrointestinal tract is smaller than the inner diameter of the first gastrointestinal tract. Specifically, the first gastrointestinal tract and the second gastrointestinal tract are the gastrointestinal tracts of low birth weight infants. The second gastrointestinal tract is the gastrointestinal tract on the anal side of the first gastrointestinal tract. The gastrointestinal anastomosis training kit 1 is used, for example, for training intestinal anastomosis when closing the artificial anus after temporary artificial anus construction in low birth weight infants. Specifically, the gastrointestinal tract includes the esophagus, duodenum, jejunum, ileum, colon, and rectum.

[0028] The gastrointestinal anastomosis training kit 1 includes a first tube 2, a second tube 3, and a support base 4.

[0029] (1) First tube Tube 12 is a model of the first digestive tract. Tube 12 is, for example, a model of the proximal intestinal tract of a low birth weight infant when closing an artificial anus. The inner diameter of the proximal intestinal tract of a low birth weight infant when closing an artificial anus is usually between 12 mm and 18 mm. Therefore, if Tube 12 is a model of the proximal intestinal tract of a low birth weight infant when closing an artificial anus, the inner diameter of Tube 12 is, for example, between 12 mm and 18 mm.

[0030] The thickness of the wall of the first tube 2 is, for example, 0.5 mm or more and 2 mm or less.

[0031] The first tube 2 is made of resin. The first tube 2 has viscoelastic properties similar to those of the intestinal tract of a low birth weight infant. The first tube 2 is made of, for example, a soft resin, specifically an acrylic resin. Preferably, the surface of the first tube 2 is wet. Preferably, the first tube 2 is made of hydrogel, specifically a hydrophilic acrylic resin. The inner surface of the first tube 2 has irregularities that mimic the inner surface of the intestinal tract. The first tube 2 is manufactured, for example, using a 3D printer.

[0032] As shown in Figure 2, in the direction in which the first tube 2 extends, the first tube 2 has one end E1 and the other end E2 as an example of a connection part.

[0033] End E1 is the end to be anastomosed. End E1 is open.

[0034] The other end E2 can be connected to a cuff checker 6 (see Figure 5) via a connecting tube 5 (see Figure 5). The connecting tube 5 and cuff checker 6 will be described later. The other end E2 is closed. The other end E2 has a through hole 21. The through hole 21 leads to the internal space of the first tube 2. With the first tube 2 and the cuff checker 6 connected via the connecting tube 5, the through hole 21 receives the tip 5B (see Figure 5) of the connecting tube 5. In more detail, the other end E2 functions as a connector as specified in ISO 594-1, ISO 594-2, or ISO 80369-7.

[0035] (2) Second tube The second tube 3 is a model of the second digestive tract. The second tube 3 is, for example, a model of the anal end of the intestine of a low birth weight infant when closing an artificial anus. The inner diameter of the anal end of the intestine of a low birth weight infant when closing an artificial anus is usually between 5 mm and 10 mm. Therefore, if the second tube 3 is a model of the anal end of the intestine of a low birth weight infant when closing an artificial anus, the inner diameter of the second tube 3 is, for example, between 5 mm and 10 mm. In other words, the inner diameter of the second tube 3 is smaller than the inner diameter of the first tube 2. The difference between the inner diameter of the first tube 2 and the inner diameter of the second tube 3 is, for example, 5 mm or more, preferably 7 mm or more. If the difference between the inner diameter of the first tube 2 and the inner diameter of the second tube 3 is greater than or equal to the above lower limit, training simulating a highly difficult surgery can be conducted. The difference between the inner diameter of the first tube 2 and the inner diameter of the second tube 3 is usually 12 mm or less.

[0036] The ratio of the inner diameter of the second tube 3 to the inner diameter of the first tube 2 (inner diameter of the second tube 3 / inner diameter of the first tube 2) is, for example, 4 / 5 or less, preferably 1 / 2 or less, and for example, 1 / 5 or more.

[0037] Furthermore, the wall thickness of the second tube 3 is the same as the wall thickness of the first tube 2.

[0038] The material of the second tube 3 is the same as the material of the first tube 2. The second tube 3 is made of, for example, a soft resin, specifically an acrylic resin. Preferably, the second tube 3 is made of a hydrogel, specifically a hydrophilic acrylic resin.

[0039] In the direction in which the second tube 3 extends, the second tube 3 has one end E11 and the other end E12 as an example of a connection.

[0040] One end, E11, is the end to be anastomosed. One end, E11, is open.

[0041] The other end E12 can be connected to the cuff checker 6 (see Figure 5) via the connecting tube 5 (see Figure 5). The other end E12 is closed. The other end E12 has a through hole 31. The through hole 31 leads to the internal space of the second tube 3. The through hole 31, like the through hole 21 of the first tube 2, can also receive the end 5B (see Figure 5) of the connecting tube 5. The other end E12, like the other end E2 of the first tube 2, functions as a connector as specified in ISO 594-1, ISO 594-2, or ISO 80369-7.

[0042] (2) Support stand As shown in Figure 3, the support base 4 supports the first tube 2 and the second tube 3. The support base 4 is a model of the surgical field. The support base 4 has a base 41, two rubber bushings 42A and 42B, and a circle 43.

[0043] The base 41 extends in the vertical direction. The base 41 has a roughly box shape. As shown in Figure 1, the base 41 has two through holes 411A and 411B. The through hole 411B is positioned away from the through hole 411A. The distance between the through holes 411A and 411B is, for example, 5 mm or more and 10 mm or less. The diameters of the through holes 411A and 411B are, for example, 20 mm or more and 30 mm or less. The distance between the center of the through hole 411A and the center of the through hole 411B is, for example, 30 mm or more and 40 mm or less.

[0044] The rubber bushing 42A closes the through hole 411A. The rubber bushing 42A has a slit 421A. The slit 421A has a cross shape. As shown in Figure 3, with the slit 421A open, the first tube 2 passes through the slit 421A. With the first tube 2 passing through the slit 421A, one end E1 of the first tube 2 protrudes upward from the base 41. With the first tube 2 passing through the slit 421A, the rubber bushing 42A supports the first tube 2.

[0045] As shown in Figure 1, the rubber bushing 42B closes the through hole 411B. The rubber bushing 42B has a slit 421B. The slit 421B has a cross shape. As shown in Figure 3, with the slit 421B open, the second tube 3 passes through the slit 421B. With the second tube 3 passing through the slit 421B, one end E11 of the second tube 3 protrudes upward from the base 41. With the second tube 3 passing through the slit 421B, the rubber bushing 42B supports the second tube 3.

[0046] Circle 43 restricts the surgical field. Circle 43 has a cylindrical shape. The inner diameter of Circle 43 is, for example, 120 mm or more and 150 mm or less. Circle 43 can be placed on a base 41. When Circle 43 is placed on the base 41, Circle 43 surrounds two rubber bushings 42A and 42B. The first tube 2 is passed through the slit 421A of rubber bushing 42A, and the second tube 3 is passed through the slit 421B of rubber bushing 42B. When Circle 43 is placed on the base 41, Circle 43 surrounds one end E1 of the first tube 2 and one end E11 of the second tube 3.

[0047] 2. Training method using a gastrointestinal anastomosis training kit Next, we will explain the training method using the gastrointestinal anastomosis training kit 1.

[0048] (1) Gastrointestinal anastomosis training To begin training using the gastrointestinal anastomosis training kit 1, first pass the first tube 2 through the rubber bushing 42A, pass the second tube 3 through the rubber bushing 42B, and if necessary, place the circle 43 on the base 41.

[0049] Next, using surgical instruments, one end E1 of the first tube 2 and one end E11 of the second tube 3 are anastomosed, as shown in Figure 4. The end E1 of the first tube 2 and the end E11 of the second tube 3 are anastomosed so that the inner surface of the first tube 2 and the inner surface of the second tube 3 are connected.

[0050] (2) Confirmation of the anastomosis status Next, training using the gastrointestinal anastomosis training kit 1 allows you to check the anastomosis status.

[0051] To check the anastomosis status, first remove the anastomosed first tube 2 and second tube 3 from the support base 4.

[0052] Next, as shown in Figure 5, the cuff checker 6 is connected to the first tube 2 via the connecting tube 5. Specifically, the base end 5A of the connecting tube 5 is connected to the cuff checker 6, and the tip 5B of the connecting tube 5 is pressed into the through hole 21. This connects the first tube 2 and the cuff checker 6 via the connecting tube 5. The other end E12 of the second tube 3 is ligated with a clip or the like. This closes the through hole 31 of the second tube 3.

[0053] Next, the cuff checker 6 is operated to deliver air from the cuff checker 6 to the first tube 2 via the connecting tube 6. In other words, the connecting tube 5 and the cuff checker 6 are an example of an air introduction device for introducing air into the anastomotic first tube 2 and second tube 3.

[0054] Then, the pressure (leak pressure) inside the first tube 2 and the second tube 3 when air begins to escape from the anastomosis between the first tube 2 and the second tube 3 is measured with the cuff checker 6.

[0055] When the first tube 2 and the second tube 3 are properly anastomosed, air is less likely to escape from the anastomosis between the first tube 2 and the second tube 3. Therefore, when the first tube 2 and the second tube 3 are properly anastomosed, the cuff checker 6 can measure a leak pressure above a predetermined value. The predetermined value is, for example, 4 hPa.

[0056] On the other hand, if the anastomosis between the first tube 2 and the second tube 3 is insufficient, the leak pressure will fall below a predetermined value.

[0057] By measuring the leak pressure, it is possible to confirm whether the anastomosis between the first tube 2 and the second tube 3 is appropriate.

[0058] Furthermore, when the leak pressure is measured as described above while the anastomotic first tube 2 and second tube 3 are immersed in water, the leaked air forms bubbles.

[0059] This allows for the identification and review of areas where the anastomosis between the first tube 2 and the second tube 3 is insufficient, based on the presence of air bubbles.

[0060] 3. Effects (1) According to the gastrointestinal anastomosis training kit 1, as shown in Figure 1, it comprises a first tube 2 and a second tube 3 having an inner diameter smaller than the inner diameter of the first tube 2.

[0061] Therefore, training in anastomosis between the first tube 2 and the second tube 3 allows for training in anastomosis between the first digestive tract and the second digestive tract, which has a smaller inner diameter than the first digestive tract.

[0062] (2) According to the gastrointestinal anastomosis training kit 1, the first tube 2 and the second tube 3 are models of the gastrointestinal tract of a low birth weight infant.

[0063] Therefore, it allows for training in the highly complex gastrointestinal anastomosis procedure for low-birth-weight infants.

[0064] (3) According to the gastrointestinal anastomosis training kit 1, the difference between the inner diameter of the first tube 2 and the inner diameter of the second tube 3 is 5 mm or more.

[0065] Therefore, it allows for training in anastomosis procedures between gastrointestinal tracts with large differences in inner diameter.

[0066] (4) According to the gastrointestinal anastomosis training kit 1, the first tube 2 and the second tube 3 are made of acrylic resin.

[0067] Therefore, it is possible to obtain a first tube 2 and a second tube 3 that have viscoelastic properties similar to those of the actual intestinal tract.

[0068] (5) According to the gastrointestinal anastomosis training kit 1, as shown in Figures 1 and 3, the kit includes a support stand 4 for supporting the first tube 2 and the second tube 3, which is a model of the surgical field.

[0069] Therefore, by setting the first tube 2 and the second tube 3 on the support stand 4 and training, it is possible to train while simulating the actual surgical field.

[0070] (6) According to the gastrointestinal anastomosis training kit 1, as shown in Figure 2, the first tube 2 and the second tube 3 have a connecting portion (other end E2 or other end E12) that can be connected to the connecting tube 5.

[0071] Therefore, as shown in Figure 5, the anastomotic first tube 2 and second tube 3 can be connected to the cuff checker 6 via the connecting tube 5, allowing air to be supplied into the anastomotic first tube 2 and second tube 3.

[0072] This allows us to measure the pressure (leak pressure) at which air begins to escape from the anastomosis between the first tube 2 and the second tube 3, and confirm whether the anastomosis between the first tube 2 and the second tube 3 is proper.

[0073] Furthermore, by measuring the leak pressure while the anastomotic first tube 2 and second tube 3 are immersed in water, it is possible to identify areas where the anastomosis is insufficient based on the bubbles generated from the leak point.

[0074] 4. Variations Next, I will explain some variations.

[0075] (1) The gastrointestinal anastomosis training kit 1 may also include the above-mentioned connecting tube 5, cuff checker 6, and container 7 (see Figure 5), in addition to the first tube 2, second tube 3, and support stand 4.

[0076] Container 7 can hold water. Container 7 has a volume sufficient to immerse the anastomotic first tube 2 and second tube 3 in the water it holds.

[0077] (2) The air introduction device may be a syringe. Preferably, the syringe is a medical syringe. More specifically, the syringe is a medical syringe that can be connected to a connector specified in ISO 594-1, ISO 594-2, or ISO 80369-7.

[0078] (3) The gastrointestinal anastomosis training kit 1 may include a pump (an example of an air introduction device) and a pressure gauge independent of the pump.

[0079] (4) The use of the gastrointestinal anastomosis training kit 1 is not limited to "training in bowel anastomosis when closing a colostomy in temporary colostomy for low birth weight infants." It can be used for training in any surgical procedure that involves bowel anastomosis. [Examples]

[0080] Next, the present invention will be described based on examples.

[0081] <Examples> Several physicians with experience in intestinal anastomosis of low birth weight infants used the gastrointestinal anastomosis training kit shown in Figure 1 to anastomose the first tube and the second tube.

[0082] Subsequently, the leak pressure of the anastomotic first and second tubes was measured. The results are shown in Figure 6.

[0083] As the number of intestinal anastomoses performed on low birth weight infants increased, the leak pressure of the anastomosed first and second tubes tended to increase.

[0084] Therefore, by using a gastrointestinal anastomosis training kit to train in a way that increases the leak pressure of the anastomosed first and second tubes, it is expected that in actual surgical procedures, the anastomosis can be performed appropriately, just as well as by experienced physicians. [Explanation of Symbols]

[0085] 1. Gastrointestinal Anastomosis Training Kit 2. First tube 3. Second tube 4 Support stand 5. Connecting tubes 6 Cuff Checker 7 Container

Claims

1. A gastrointestinal anastomosis training kit used for training in anastomosis procedures between the first and second gastrointestinal tracts, The above-mentioned first model of the digestive tract, comprising a first tube with a wet surface, The second model of the digestive tract comprises a second tube whose surface is wet and which has an inner diameter smaller than the inner diameter of the first tube. Equipped with, The first tube is, One end is open, The other end is closed and It has, The second tube is, In the training described above, one end of the first tube is anastomosed with the one end of the first tube, and the open end is, The other end is closed and It has, A gastrointestinal anastomosis training kit, wherein at least one of the first tube and the second tube has a connector that can be connected to an air introduction device for introducing air into the anastomosed first tube and second tube.

2. A gastrointestinal anastomosis training kit used for training in anastomosis procedures between the first and second gastrointestinal tracts, The first tube, which is a model of the digestive tract described above, The second model of the digestive tract comprises a second tube having an inner diameter smaller than the inner diameter of the first tube, A base having a first through-hole through which the first tube passes and a second through-hole through which the second tube passes. Equipped with, A gastrointestinal anastomosis training kit, wherein one end of the first tube protrudes upward from the base through the first through-hole, and one end of the second tube protrudes upward from the base through the second through-hole.

3. The first and second gastrointestinal tracts are the gastrointestinal tracts of low birth weight infants. The gastrointestinal anastomosis training kit according to claim 1 or 2, wherein the second gastrointestinal tract is a gastrointestinal tract that is more anal than the first gastrointestinal tract.

4. The gastrointestinal anastomosis training kit according to any one of claims 1 to 3, wherein the difference between the inner diameter of the first tube and the inner diameter of the second tube is 5 mm or more.

5. The gastrointestinal anastomosis training kit according to any one of claims 1 to 4, wherein the first tube and the second tube are made of hydrogel.

6. Furthermore, a support base for supporting the first tube and the second tube, A gastrointestinal anastomosis training kit according to any one of claims 1 to 5, comprising a support stand which is a model of the surgical field.

7. The gastrointestinal anastomosis training kit according to claim 1, further comprising the air introduction device.

8. The gastrointestinal anastomosis training kit according to claim 7, further comprising a container capable of holding water, in which the anastomosed first tube and the second tube can be immersed.

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