TWI851151B - Teaching phantom for ultrasound-assisted calcification aspiration and its manufacturing method - Google Patents

Abstract

A teaching phantom for ultrasound-assisted calcification aspiration includes an egg and a tissue that covers the outer side of the egg and contains fiber and has a water content of 70-98%. The egg includes a cooked and powdered yolk part for simulating calcification crystallization, a protein part covering the yolk part, and an eggshell covering the yolk part and the protein part and having a treatment area suitable for irradiation by an ultrasound probe. The tissue is used to simulate muscle tissue and can be used in conjunction with ultrasound imaging to truly simulate the environment in which calcification crystallization is formed in the negative pressure environment of muscle tissue, thereby providing simulation training for calcification aspiration. In addition, the present invention also provides a method for manufacturing a teaching phantom for ultrasound-assisted calcification aspiration of the present invention.

Description

Teaching phantom for ultrasound-assisted calcification aspiration and its manufacturing method

The present invention relates to a teaching phantom and a manufacturing method, and in particular to a teaching phantom for ultrasound-assisted calcification aspiration and a manufacturing method thereof.

Calcification aspiration is mainly used to treat calcific tendinitis. It is usually performed in conjunction with ultrasound imaging. After confirming the affected area where calcification crystals accumulate, the needle of the syringe is inserted into the affected area. The syringe is repeatedly pushed, injected, and pulled to aspirate, so that the calcification crystals are gradually extracted due to the constant change in pressure, in order to achieve the treatment goal without surgery.

As for the feature that calcification aspiration needs to be performed with ultrasound imaging, although phantoms that are specially designed for ultrasound imaging are available to meet the needs of practice, it is difficult to completely simulate the muscles, affected tissues, and even calcification crystals from the outside to the inside, and to form a closed and negative pressure space that is the same as the actual affected area, considering that the procedure requires repeated pushing, injection, and pulling during the procedure. In the absence of effective practice, many doctors can only accumulate experience in actual operations. Therefore, when performing calcification aspiration on patients, it is natural that the difference between the feel and practice, or the difference in experience and skills, may lead to poor treatment results or even side effects.

Therefore, the purpose of the present invention is to provide a teaching phantom and its manufacturing method for ultrasound-assisted calcification aspiration that can be easily manufactured and provide high-fidelity simulation training.

Therefore, the teaching phantom of the ultrasound-assisted calcification aspiration of the present invention includes an egg and a tissue covering the outer side of the egg and containing fibers and having a water content of 70-98%.

The egg includes a cooked and powdered yolk for simulating calcification crystals, an egg white covering the yolk, and an egg shell covering the yolk and the egg white and having a treatment area suitable for irradiation by an ultrasonic probe.

This tissue is used to simulate muscle tissue.

In addition, the manufacturing method of the teaching phantom of ultrasound-assisted calcification aspiration of the present invention includes a preparation step, a first processing step, a second processing step, and a molding step.

The preparatory step is to prepare an egg and a simulated powder for adding water to prepare a texture.

The first treatment step is to ripen a yolk portion of the egg and thin a portion of an eggshell of the egg using an acidic solution to form a treatment area suitable for irradiation by an ultrasonic probe.

The second processing step is to dissolve the simulated powder in 55-65 times the weight of water to form a colloidal solution.

The molding step includes a positioning sub-step of placing the egg in a mold, a filling sub-step of pouring the colloid solution into the mold, and a manufacturing sub-step of waiting for the colloid solution to solidify to form a tissue body covering the egg, and taking the manufactured teaching phantom out of the mold.

The effect of the present invention is that the teaching phantom made by the manufacturing method of the teaching phantom for ultrasound-assisted calcification aspiration of the present invention is not only easy to obtain materials and can be manufactured in simple steps, but also can simulate muscles by using the tissue body, and simulate the difference in touch close to the affected part by using the texture difference between the egg white part and the tissue body, and then simulate the calcified tissue by using the yolk part, not only can a negative pressure environment similar to the actual situation be simply created, but also the use of the ultrasound probe can be smoothly coordinated through the treatment area of the egg shell, so that the demand for high-simulation simulation training can be met.

1:Eggs

10: Yolk part

11: Protein section

12: Eggshell

120: Processing area

2: Organization

2’: Colloidal solution

20: Simulated powder

40: Preparatory steps

41: First processing step

42: Second processing step

421: Add substeps

422: Seasoning sub-step

43: Molding step

431: Positioning sub-step

432: Filling sub-step

433: Degassing sub-step

434: Create sub-steps

50:Mold room

51: Ultrasonic probe

52: Syringe

521: Needle

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a cross-sectional view illustrating an embodiment of an article of a teaching phantom for ultrasound-assisted calcification aspiration of the present invention; FIG. 2 is a block flow chart illustrating an embodiment of a method of manufacturing a teaching phantom for ultrasound-assisted calcification aspiration of the present invention; FIG. 3 is a flow chart illustrating each step of the method embodiment in conjunction with FIG. 2; and FIG. 4 is a schematic diagram illustrating the use of the article embodiment for practicing ultrasound-assisted calcification aspiration.

Referring to FIG. 1 , an embodiment of an object of the teaching phantom of the ultrasonic assisted calcification aspiration of the present invention is made by a method embodiment of the manufacturing method of the teaching phantom of the ultrasonic assisted calcification aspiration of the present invention as shown in FIG. 2 . The method embodiment includes a preparation step 40, a first processing step 41, a second processing step 42, and a molding step 43.

Referring to FIG. 2 and FIG. 3 together with FIG. 1, the preparation step 40 is to prepare an egg 1 and a simulated powder 20 for adding water to prepare a tissue 2. Specifically, the simulated powder 20 is agar powder or highly absorbent resin powder, so that after preparation, a colloidal structure can be formed that can simulate muscle fibers due to the presence of cellulose and can contain a water content close to that of real muscle due to the property of being able to absorb a large amount of water. Among them, the simulated powder 20 is preferably agar powder that can be easily dissolved in water and adjusted, and can form agar jelly after being left to harden.

The first treatment step 41 is to ripen the yolk 10 of the egg 1 so that the yolk 10 forms a powder structure that is physically similar to the calcified tissue in the affected part, and to thin a portion of the eggshell 12 of the egg 1 using an acid solution to form a treatment area 120 suitable for irradiation by an ultrasonic probe 51 (see FIG. 4 ). Specifically, the acid solution is hydrochloric acid, and as long as a portion of the eggshell 12 is exposed to hydrochloric acid, the calcium carbonate component that mainly constitutes the eggshell 12 will be eroded and thinned to form the treatment area 120. In the treatment area 120 where the thickness of the egg shell 12 is relatively thin, the ultrasound waves emitted by the ultrasound probe 51 can pass smoothly, so as to facilitate observation of the position of the yolk part 10 through the ultrasound imaging mechanism.

The second processing step 42 includes an adding sub-step 421 of adding the simulated powder 20 into water to form a semi-finished solution, and a seasoning sub-step 422 of heating the semi-finished solution and continuously stirring to completely dissolve the simulated powder 20 in water to form the colloidal solution 2'. Specifically, in the adding sub-step 421, 10 grams of the simulated powder 20 is dissolved in 55-65 times the weight of water, preferably 60 times, that is, 600 grams of room temperature pure water, to form a colloidal solution 2'. In the seasoning sub-step 422, the heating and stirring actions are mainly used to help the to-be-made powder 20 to be dissolved in the water, and the continuous stirring action is used to avoid the to-be-made powder 20 that is not completely dissolved from settling at the bottom and possibly causing overheating and scorching.

The molding step 43 includes a positioning sub-step 431 of placing the egg 1 in a mold chamber 50, a filling sub-step 432 of pouring the colloid solution 2' into the mold chamber 50 until the egg 1 is completely covered, a degassing sub-step 433 of removing a plurality of bubbles in the colloid solution 2', and a manufacturing sub-step 434 of waiting for the colloid solution 2' to solidify to form a tissue body 2 covering the egg 1, and taking the manufactured teaching phantom out of the mold chamber 50. Among them, in the positioning sub-step 431, the main thing is to cooperate with the shape of the mold chamber 50, and use the processing area 120 and the position expected to be operated by a syringe 52 (see Figure 4) during operation as a relative reference, so that the processing area 120 can correspond to the position of the ultrasonic probe 51 relative to the position where the subsequent operation is to be performed. In the degassing sub-step 433, it is mainly to remove the bubbles that are inevitably generated in the colloid solution 2' before solidification, and avoid the formation of pores after the colloid solution 2' solidifies to form the tissue 2. In addition to creating the required negative pressure environment, it also ensures the quality of the overall structural consistency of the tissue 2.

The teaching phantom made by the embodiment of the method is the article embodiment of the teaching phantom of the ultrasound-assisted calcification aspiration of the present invention. The article embodiment comprises the egg 1, and the tissue 2 coated on the outer side of the egg 1 and containing fiber and having a water content of 70-98%. The egg 1 comprises the yolk 10 which is ripened and in powder form for simulating calcification crystallization, a protein 11 coating the yolk 10, and the eggshell 12 coating the yolk 10 and the protein 11 and having the treatment area 120 suitable for irradiation by the ultrasound probe 51. In addition, in this embodiment of the article, the water content of the tissue 2 is preferably 73%, which is similar to real muscle tissue, so it can be used to simulate muscle tissue.

Referring to FIG. 4 , when the article is used in this embodiment, the ultrasonic probe 51 can irradiate the egg 1 through the position of the treatment area 120 of the eggshell 12. By ultrasonic imaging of the yolk portion 10 of the egg 1, the user can confirm the position of the yolk portion 10 used to simulate the calcified tissue. Then, the user can operate the syringe 52 to make a needle 521 of the syringe 52 pierce from the tissue 2 toward the yolk portion 10. By virtue of the fact that the tissue 2 contains cellulose and has a water content similar to that of muscle tissue, the feeling of piercing muscle tissue can be simulated. Finally, when the user confirms that the needle 521 has punctured the yolk 10 based on ultrasound imaging, the syringe 52 can be repeatedly pushed, injected, and pulled to aspirate, thereby causing the pressure of the yolk 10 simulating a negative pressure environment to continuously change until the yolk 10 simulating calcification crystals is extracted by the syringe 52, thus completing the simulation operation of ultrasound-assisted calcification aspiration.

In summary, the teaching phantom and its manufacturing method of ultrasound-assisted calcification aspiration of the present invention can be simply manufactured by using easily available materials, so as to use the tissue 2 of the embodiment of the article to simulate the muscle, and through the texture difference between the egg white part 11 and the tissue 2 of the egg 1, simulate the difference in touch close to the affected part, and then use the yolk part 10 to simulate the calcified tissue. In addition to simply creating a negative pressure environment that is the same as the actual situation, it can also smoothly cooperate with the use of the ultrasound probe 51, thereby responding to the needs of high-simulation simulation training. Therefore, the purpose of the present invention can be achieved.

However, the above is only an example of the implementation of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

1:Eggs

10: Yolk part

11: Protein section

12: Eggshell

120: Processing area

2: Organization

Claims (7)

A teaching phantom for ultrasound-assisted calcification aspiration includes: an egg, including a cooked and powdered yolk for simulating calcification crystals, a protein covering the yolk, and an eggshell covering the yolk and the protein and having a treatment area suitable for irradiation by an ultrasound probe; and a tissue covering the outer side of the egg and containing fibers, and having a water content of 70-98%, thereby simulating muscle tissue. A teaching phantom for ultrasound-assisted calcification aspiration as described in claim 1, wherein the tissue is selected from agar jelly or a highly absorbent polymer. A method for making a phantom for teaching ultrasound-assisted calcification aspiration includes: a preparation step of preparing an egg and a phantom powder for adding water to prepare a tissue; a first treatment step of ripening a yolk portion of the egg and thinning a portion of an eggshell of the egg using an acid solution to form a treatment area suitable for irradiation by an ultrasound probe; a second treatment step of A processing step is performed to dissolve the simulated material powder in 55-65 times the weight of water to form a colloidal solution; and a molding step includes a positioning sub-step of placing the egg in a mold chamber, a filling sub-step of pouring the colloidal solution into the mold chamber, and a manufacturing sub-step of waiting for the colloidal solution to solidify to form a tissue body covering the outside of the egg, and taking the manufactured teaching simulated body out of the mold chamber. The method for manufacturing a teaching phantom for ultrasound-assisted calcification aspiration as described in claim 3, wherein in the first treatment step, the acidic solution is hydrochloric acid. The manufacturing method of the teaching phantom for ultrasound-assisted calcification aspiration as described in claim 3, wherein the second processing step includes an adding sub-step of adding the phantom powder into water to form a semi-finished solution, and a seasoning sub-step of heating the semi-finished solution to completely dissolve the phantom powder in water to form the colloidal solution. The method for manufacturing a teaching phantom for ultrasound-assisted calcification aspiration as described in claim 3, wherein the molding step further includes a degassing sub-step between the filling sub-step and the manufacturing sub-step, and the degassing sub-step is to remove at least one bubble in the colloid solution. A method for producing a teaching phantom for ultrasound-assisted calcification aspiration as described in any one of claims 3 to 6, wherein the phantom powder is agar powder or highly absorbent resin powder.

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