JPS60260986A - Simulated organ for artificial autopsy body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a simulated organ for practical training, and more particularly to a simulated organ suitable for a dissected body for training used as a substitute for a cadaver for Mrf'J training.

[Prior art]

Dissection training is also required at various schools such as university medical schools and the Baka Nursing School, but in recent years there has been a shortage of cadavers for training and it is becoming increasingly difficult to obtain them. For this reason, it is difficult for university medical schools to secure the necessary number of cadavers for dissection training, and various schools are currently unable to conduct dissection training.

Despite this, no attempt has been made so far to create a human body model that can be used for dissection training instead of a cadaver. Human models for school education, nursing model dolls as auxiliary teaching materials for nursing training or clinical learning, gastric lavage/injection models, etc. have been known, but it is unlikely that these can be used as cadaver substitutes for dissection training. It's not something.

[Purpose of the invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an artificial dissected body that can be satisfactorily used as a substitute for a cadaver for dissection training, and particularly to provide a simulated organ for use therein.

The purpose of trying to donate such a simulated organ is itself a completely new idea, and has never been attempted before.

Now, in order for an artificial dissected body to achieve the same results in dissection training as an actual cadaver, the following two points are important. Firstly,
Each component of the artificial dissected body is equivalent to the corresponding part of the actual cadaver in terms of color, size, shape (external shape and internal structure), hardness, tactility, sense of incision using dissecting tools, etc., within the range that can be observed with the naked eye. To be. Second, it can be dissected using the same method used for dissecting cadavers. Therefore, in other words, the object of the present invention can be said to be to provide a human anatomical body that exactly meets the above conditions.

[Structure of the invention]

The present inventors focused on the fact that in order to realize a simulated organ that meets the above conditions, the selection of materials is an important factor in terms of manufacturing technology and physical properties of the resulting product, and conducted research. As a result, they arrived at silicone rubber and completed the present invention.

That is, the present invention provides a simulated organ for an artificial anatomy made of silicone rubber.

The silicone rubber used in the present invention is particularly suitable for room temperature
1 sulfur type (RTV) silicone rubber is preferred, and can be selected from many types of commercially available products depending on the desired hardness, etc. A conventional method can be used to mold the RTV silicone rubber into the shape of the intended organ, and specifically, it can be molded by the method described below. To color the simulated organ in a desired color, the outer surface may be painted after molding, or silicone rubber mixed with pigments, dyes, etc., such as silicone color or acrylic color, may be used.

The objects of the simulated organs of the present invention are all types of organs that make up the human body, such as hollow organs such as the stomach, intestines, uterus, and bladder, and lungs, liver, kidneys, pancreas, breasts, ovaries, and lungs. ,
Parenchymal organs such as testis, thyroid, adrenal gland, penis, and scrotum can be mentioned.

Taking the stomach as an example, a method for manufacturing a simulated hollow organ is to divide a real stomach excised from a corpse vertically into two, make a mold of each half using RTV silicone rubber, and then A female mold is used to mold RTV silicone rubber for each half of the stomach. The desired mock-up is fabricated by joining the two molded bodies of the resulting stomach halves.

be able to. The bonding is performed using the same RTV silicone rubber or adhesive as the molded body. The female mold produced above can be used repeatedly, and many copies of the same shape can be easily produced. The pre-simulation produced in this way is an accurate copy of the real thing in both its external shape and internal structure, and by appropriately selecting the silicone color, the hardness and the feeling of dissection using dissecting tools are also equivalent to the real thing.

Female molds made of silicone rubber may deteriorate and crack after repeated use, but this female mold can be used to make archival cheek molds made of metal. For example, the female mold of the silicone mold 11 can be easily duplicated when necessary.

Another method for producing hollow organs is, for example, by
- Seal the denum side exit I, inject RTV silicone rubber from the esophagus side entrance, harden it, and take a mold of the inside of the stomach. The outer stomach of the mold is removed, and a thin layer of latex containing, for example, a vulcanizing agent is applied to the surface of the mold and cured to form a core made of a thin rubber film. This core is extremely flexible and stretchable, allowing it to be removed from the mold without tearing.

On the other hand, a female mold of the external shape of the stomach is also made, the core is placed inside the female mold, and the core is inflated like a balloon with air, water, etc. At this time, hold it so that there is a gap between the female mold and the core that corresponds to the thickness of the stomach,
RTV silicone rubber is injected into the gap and cured.

By removing the female mold and core, the desired mock-up can be obtained. The core deflates when the air, water, etc. inside it is removed, so it can be removed from the hole on the esophagus side or duodenum side before the simulation.

According to this method, a simulated hollow organ without joints can be manufactured. The female mold and core can be used repeatedly.

The method for manufacturing a simulated hollow organ has been described above using the stomach as an example, but most other hollow organs can be manufactured in the same manner.

Next, the production of parenchymal organs will be explained. Parenchymal organs include, for example, the liver, which is filled with liver tissue;
It is composed of filled tissue and tubular bodies, such as the hepatic artery and hepatic vein, which branch in a complicated manner and extend to the periphery. The lungs, kidneys, pancreas, breasts, ovaries, etc. each have in their internal tissues bronchial tubes, renal disks, pancreatic ducts, foraminal ducts, fallopian tubes, etc., which correspond to the hepatic ducts of the liver. To create a simulated parenchymal organ, RTV silicone rubber is first injected into the hepatic duct of a real liver excised from a corpse using a syringe, and allowed to flow to the end of the hepatic duct. After curing, the liver tissue is dissolved away using an alkaline aqueous solution to obtain a primary model of a tubular body such as the liver duct.After dividing this primary tubular body model into several parts so that it can be molded, Make a female mold by molding each using Rgo silicone comb.After applying mold release material to the surface of each female mold,
The intended simulated tubular body is obtained by injecting and curing the RTV silicone rubber and joining the resulting molded body using an adhesive or the RTV silicone rubber. The female mold described above can be used repeatedly to manufacture the simulated tubular body, and if the second female mold deteriorates due to use and develops cracks etc., it can be manufactured from the first model of the tubular body. can. Separately from the tubular body, a female mold with the external shape of 1]FIIldG is prepared by making a mold of the external shape of the actual liver using RT V silicone rubber. After applying a mold release material to the inner surface of this female mold, the simulated tubular body manufactured above is placed and held at a predetermined position inside the female mold, and foamable silicone rubber is injected into the gap and cured. The simulated liver produced in this way has a smooth surface;
The cut surface is a porous tissue that closely resembles the condition of a real liver.

The simulated organs of the present invention have been described above, and the simulated organs produced in this way can be used together with various simulated parts of the human body, such as muscles, various membranes such as the diaphragm, subcutaneous fat, arteries and veins, nerve plexuses, bones, etc. By assembling, an artificial anatomical body can be manufactured.

Of these, most of the outside parts are preferably made of RTV silicone rubber, which has the same hardness as the real thing.
It can be a tactile sensation or a dissection sensation caused by a dissecting tool. Various bones have the same hardness as the real thing by using FRP etc.
It can give strength etc. Other materials include:
Appropriately, latex 7゛″f′-″, soft bicarbonate 1°″, etc.
Wi@Synthetic resin 2 “[・,) can be used.

〔Example〕

Implementation Example 1 - Mock Sea Bream - η Paper γ Water Li A simulated stomach was produced by dividing a real stomach into two and making a mold of each half. RTV series for mold making: J
KE 1402 (manufactured by Shin-Etsu Chemical Co., Ltd., above) was used.
Apply n, 6, and after drying, color with silicone color.
and cured. The obtained molded body of each half of the stomach is R
It was adhered with TV silicone comb KE42.

The simulated stomach produced in this way closely resembled the real stomach in terms of external shape, unevenness of the inner surface, and color, as well as hardness, feel, and sensation of cutting with a scalpel.

Manufacture of Liver - Colored RTV silicone rubber KE24 was injected into the hepatic duct of an actual liver using a syringe and cured. K
E24 flowed into the fine ends of the hepatic ducts. Similarly, colored KE24 was injected into arteries and veins and hardened. The liver was immersed in an alkaline aqueous solution to dissolve and remove the liver tissue. Each branch constituting the obtained primary model of the hepatic duct was cut to make it easy to make a mold, and molded with RTV silicone rubber K.
I made a mold with E1402. Apply release agent barrier coat No. 6 to the inner surface of the mold obtained for each branch, and after drying, apply K
E]2 was injected into every detail using a vacuum wax injector. After curing, the molded body of each branch was removed from the mold and assembled to obtain the desired model of the hepatic duct. In the same way, models of arteries and veins were made and then assembled. on the other hand,
The assembled hepatic duct and the like were placed in a predetermined position in a female mold having the external shape of the liver prepared in advance, and colored foamable RTV silicone rubber K E 51 was injected and hardened. After removing from the mold, R, TV silicone rubber KE42-TS
The membrane prepared in 1 was attached using the same silicone rubber to form the peritoneum. The simulated liver produced in this way closely resembled the real thing both in terms of its appearance and the state of the cut surface, and its hardness, texture, and sensation of cutting with a scalpel closely approximated that of the real thing.

〔Effect of the invention〕

The simulated organ of the present invention and the artificial dissected body using the same include:
Within the scope of observation with the naked eye, they are equivalent to real organs in terms of color, size, shape (external shape and internal structure), hardness, tactile sensation, sense of incision using dissecting tools, etc., and dissection is performed using the same method as normal dissection. be able to. Therefore, it is extremely useful as a substitute for cadavers for dissection training. In addition, actual corpses and organs are difficult to obtain and preserve, and are often contaminated with various bacteria, making them highly dangerous and requiring careful disposal, but the simulated organs of the present invention can be mass-produced. It has the advantage that it does not require special care for storage and is not dangerous. In particular, since actual corpses and organs are prone to decomposition, it is difficult to plan training in advance according to the time of acquisition, or to interrupt dissection once it has started, leave it for a while, and then restart it. Artificial dissected bodies using organs have no fear of decomposition, so they do not restrict training plans, and dissection can be interrupted and restarted at any time to suit learning, making training more effective.

Claims (1)

[Claims]] A simulated organ for an artificial anatomical body made of silicone rubber. 2. The simulated organ according to claim 1, wherein the silicone rubber is room temperature vulcanizable silicone rubber 11.