JP6860162B2 - Blood vessel puncture practice model - Google Patents

Description

The present invention relates to a model for practicing vascular puncture.

In order to puncture a blood vessel, it is necessary to visually or palpate the vein under the skin and then puncture the indwelling needle.
It may be difficult to confirm the veins due to individual differences among patients, so practice is required. However, practice models are commercially available because they cannot be practiced by patients for humanitarian reasons.

In many known practice models, the simulated blood vessels are placed in grooves provided in the simulated tissue or embedded in the simulated tissue, so that one to several types of pre-prepared blood vessels run, depth, and I could only practice with the thickness (Example: Patent Document 1).
Patent Document 2 discloses a method for relatively easily creating an arbitrary blood vessel running and thickness with a resin sheet. However, in order to carry out these, equipment for welding is required, and it is difficult for a person practicing vascular puncture to actually create it.
Patent Document 3 discloses a model in which simulated blood vessels can be arbitrarily arranged between the simulated muscle layer and the simulated skin layer. However, in this model, the simulated skin is simply placed on the simulated blood vessel placed on the simulated muscle layer, so that the simulated skin is greatly raised only in the simulated blood vessel and the position of the blood vessel can be easily known. Furthermore, an empty space was created between the simulated tissue and the simulated skin on both sides of the simulated blood vessel, and this space gave a feeling significantly different from that of the human body at the time of palpation.

Real Kaihei 2-53067 JP 2013-68712 JP 2014-153482

The difficulty of puncturing the blood vessel (running of the blood vessel, shape (thickness) of the blood vessel, depth of the blood vessel (depth from the upper surface of the simulated epidermis of the blood vessel or the upper simulated tissue)) can be freely set, and palpation similar to that of a living body can be performed. A possible vascular puncture practice model is provided.

In order to enable the running of blood vessels and the arbitrary setting of the shape of blood vessels in the above-mentioned problems, the present inventors have provided a sheet in which blood vessels of any shape are provided with spikes that can be arranged in any running in the lower simulated tissue. The thickness of the upper simulated tissue and / or the thickness of the lower simulated tissue is not constant, or the thickness of the upper simulated tissue, in order to include, and to allow arbitrary setting of the depth of the blood vessel of the above-mentioned task. A blood vessel puncture practice model was prepared in which the sum of the thickness and the thickness of the lower simulated tissue was made constant.

That is, the present invention is as follows.
1. 1. A vascular puncture practice model that includes an upper simulated tissue, a simulated blood vessel, and a lower simulated tissue that includes a seat with spikes that allow the simulated blood vessel to be placed on any run.
2. 3. The depth of the simulated blood vessel from the upper surface can be freely set because the thickness of the upper simulated tissue and / or the thickness of the lower simulated tissue is not constant. Blood vessel puncture practice model.
3. 3. The blood vessel according to item 1 above, wherein the sum of the thickness of the upper simulated tissue and the thickness of the lower simulated tissue is constant, and the depth of the simulated blood vessel from the upper surface of the upper simulated tissue can be freely set. Puncture practice model.

The present invention can provide a blood vessel puncture practice model in which the difficulty level of blood vessel puncture (running of blood vessels, shape (thickness) of blood vessels, depth of blood vessels) can be freely set, and palpation similar to that of a living body can be performed. it can.

Overall view of the blood vessel puncture practice model of the present invention (x-axis means vertical direction, y-axis direction means horizontal direction). Cross-sectional view of the blood vessel puncture practice model of the present invention (the z-axis means the vertical direction, the left side is one end and the right side is the other end when viewed from the front).

Hereinafter, embodiments for carrying out the present invention will be described, but the scope of the claims is not limited at all.

(Vascular puncture practice model of the present invention)
The overall view of the blood vessel puncture practice model 1 of the present invention is shown in FIG. 1, and the cross-sectional view is shown in FIG.

(Lower simulated organization)
The lower simulated structure 2 contains an elastic body, for example, a sheet containing silicone rubber as a main component and having a uniform thickness in the range of about 1 to 5 mm, or a sheet having a non-constant (non-uniform) thickness. Since the spike 3 is installed on the seat, the simulated blood vessel 4 described later can be arranged in any running.
Further, the sheet may be water-absorbent, or the water-absorbing pad 14 may be covered on the upper surface or the lower surface of the sheet. In addition, the sheet may have through holes. By absorbing the drug solution and blood into the water absorption pad 14 through the hole, it is possible to prevent the drug solution and blood from accumulating on the upper surface of the sheet of the lower simulated tissue 2.
The thickness of the lower simulated tissue 2 means the length of the lower simulated tissue 2 including the spike 3 in the z-axis direction (see: arrow 11 in FIG. 2).
Further, the spike 3 has a substantially upright shape (approximately the direction of the arrow on the z-axis) having a height of about 2 to 8 mm at intervals of about 2 mm to 8 mm in the vertical and horizontal directions, and the upper surface of the sheet (the surface in contact with the simulated blood vessel 4 described later). It is installed in. Since the spike 3 is preferably an elastic body, it flexes easily, but has a restoring force. Further, the thickness of the lower simulated structure 2 including the spike 3 can be freely adjusted by changing the thickness of the sheet and / or by changing the length of the spike 3.
In addition, in FIG. 1 and FIG. 2, an example in which the thickness of the lower simulated structure 2 is made non-uniform is shown.

(Simulated blood vessel)
The simulated blood vessel 4 includes an elastic body, for example, a flexible tube mainly composed of silicone rubber, and has an outer diameter of about 2 to 8 mm and a wall thickness of about 0.3 to 1.0 mm. The cavity of the simulated blood vessel 4 has a structure capable of flowing simulated blood or storing simulated blood.

(Upper simulated organization)
The upper simulated structure 5 contains an elastic body, for example, a sheet containing silicone rubber as a main component and having a uniform thickness in the range of about 1 to 5 mm, or a sheet having a non-constant (non-uniform) thickness.
The thickness of the upper simulated structure 5 means the length of the upper simulated structure 5 in the z-axis direction (see: arrow 12 in FIG. 2).

(Thickness of upper simulated tissue and lower simulated tissue)
As an example in which the thickness of the upper simulated structure 5 is non-uniform, for example, the upper simulated structure 5 has a wedge shape with one end having a thickness of about 1 mm and the other end having a thickness of about 4 mm. Alternatively, the shape may be such that the shape is inclined from one end to the other end (more specifically, the thickness increases from one end to the other end). Alternatively, the upper simulated tissue 5 has a recessed shape in which the lower surface (the surface facing the lower simulated tissue 2) has a thickness of about 4 mm at both ends and a thickness of about 1 mm near the center, or the thickness of both ends. It may have a chevron shape with a thickness of about 1 mm and a thickness near the center of about 4 mm.
As an example in which the thickness of the lower simulated structure 2 is non-uniform, for example, the lower simulated structure 2 has a wedge shape with one end having a thickness of about 4 mm and the other end having a thickness of about 1 mm. Alternatively, more specifically, the shape may be such that an inclination is provided from one end to the other end (more specifically, the thickness decreases from one end to the other end). Alternatively, the lower simulated tissue 2 has a chevron shape having a thickness of about 1 mm at both ends and a thickness of about 4 mm near the center of the upper surface (the surface facing the upper simulated tissue 5), or the thickness of both ends. It may have a recessed shape having a thickness of about 4 mm and a thickness near the center of about 1 mm.
The lower surface of the upper simulated tissue 5 in which the simulated blood vessel 4 is not installed in the lower simulated tissue 2 is supported by the spike 3. As a result, when the practitioner touches the upper surface of the simulated epidermis 6 or the upper simulated tissue 5, which will be described later, by appropriately adjusting the elasticity, the interval / length of the spike 3, and the elasticity / thickness of the upper simulated tissue 5. You can get a feeling that is very similar to a living body.

The sum of the thickness of the upper simulated tissue 5 and the thickness of the lower simulated tissue 2 is constant by adding the length of the upper simulated tissue 5 in the z-axis direction and the length of the lower simulated tissue 2 including the spike 3 in the z-axis direction. It means that the sum (see: arrow 13 in FIG. 2) is constant. The sum of the thicknesses is constant, although the following combinations can be exemplified, but are not particularly limited.
When the thickness of the upper simulated structure 5 increases from one end to the other end, the thickness of the lower simulated structure 2 decreases from one end to the other end (see FIG. 2). ..
When the thickness of the upper simulated structure 5 decreases from one end to the other end, the thickness of the lower simulated structure 2 increases from one end to the other end.
When the lower surface of the upper simulated structure 5 is recessed, the upper surface of the lower simulated structure 2 is chevron-shaped.
When the lower surface of the upper simulated structure 5 has a chevron shape, the upper surface of the lower simulated structure 2 has a concave shape.
In addition, if the sum of the thickness of the upper simulated tissue 5 and the thickness of the lower simulated tissue 2 is made constant, the upper surface of the upper simulated tissue 5 or the upper surface of the simulated epidermis 6 can be made substantially uniform, and the simulated blood vessel 4 can be formed. Since the upper surface of the upper simulated tissue 5 or the upper surface of the simulated epidermis 6 is not raised, the practice model is closer to the living body.

(Simulated epidermis)
The simulated epidermis 6 may be placed on the upper simulated tissue 5 if necessary. The simulated skin 6 may be an elastic body, for example, a sheet containing silicone rubber as a main component. The simulated skin 6 preferably has a structure that can be attached to and detached from the case 7 described later as needed so as not to shift during practice.

(Case)
It is preferable to use the case 7 in which the upper surface (in the direction of the arrow on the z-axis) for accommodating the upper simulated structure 5 and the lower simulated structure 2 is open. A notch 8 for passing the simulated blood vessel 4 may be provided on the side surface (y-axis direction) of the case 7. Further, it is preferable that the case 7 is provided with a hole 10 through which a band is passed so that the blood vessel puncture practice model 1 can be attached to an arm or the like. Further, when the simulated epidermis 6 is used, the simulated epidermis 6 is required for the case 7. It is preferable that the structure has a structure that can be attached and detached according to the above, for example, a structure having a hook-and-loop fastener 9. The case 7 is preferably made of hard plastic or the like so that it can serve as a stopper when the indwelling needle penetrates the simulated blood vessel 4 or the like.

(Difficulty setting for blood vessel puncture practice)
The simulated blood vessel 4 is preferably installed so as to be substantially buried between the spikes 3. Since the simulated blood vessel 4 is an elastic body (flexible), it can be arranged in any running (eg, linear shape, curved shape, etc.) desired by the instructor or the practitioner during the blood vessel puncture practice.
Further, the simulated blood vessel 4 is not installed in a state where it is almost buried between the spikes 3, but even if it is installed on the spike 3, the spike 3 is soft and bends, and the simulated blood vessel 4 is placed on the upper surface of the lower simulated tissue 2 (each spike). It does not protrude significantly from the surface connecting the tips of 3).
When using the blood vessel puncture practice model, the upper simulated tissue 5 is placed on the lower simulated tissue 2, and the simulated epidermis 6 is further covered with the upper simulated tissue 5 if necessary.
In the blood vessel puncture practice model 1 in which the thickness of the upper simulated tissue 5 and the lower simulated tissue 2 is uneven, when the depth of the simulated blood vessel 4 is desired to be deepened, the simulated blood vessel 4 is placed in a portion where the thickness of the lower simulated tissue 2 is thin. In addition, when it is desired to make the depth of the simulated blood vessel 4 shallow, the depth of the simulated blood vessel 4 can be realized according to the purpose of practice by arranging the simulated blood vessel 4 at a thick portion of the lower simulated tissue 2. Further, by changing the shape (particularly thickness) of the tube of the simulated blood vessel 4, it is possible to practice assuming a blood vessel of any shape (particularly thickness).

(Feeling of blood vessel puncture practice model)
The blood vessel puncture practice model 1 of the present invention can realize a feeling close to that of a living body by the spike 3, and enables palpation similar to that of a living body.
More specifically, the spike 3 supports the upper simulated tissue 5 from below (in the z-axis direction), so that when the practitioner touches the upper surface of the upper simulated tissue 5 (simulated epidermis 6), an appropriate repulsion is obtained. It feels like a living body. Further, the portion where the simulated blood vessel 4 is arranged and the portion supported by the spike 3 have different feelings when the practitioner touches the upper surface of the upper simulated tissue 5 (simulated epidermis 6), so that the same as the human body. You can practice knowing the position of blood vessels by palpation.
Further, the simulated blood vessel 4 is almost buried between the spikes 3, and no empty space is created on both sides of the simulated blood vessel 4 (see FIG. 2). Therefore, the upper simulated tissue 5 (and the simulated epidermis 6) placed on the simulated blood vessel 4 does not rise significantly due to the simulated blood vessel 4. That is, since the simulated blood vessel 4 does not excessively protrude from the upper simulated tissue 5 (simulated epidermis 6), the feeling is close to that of the human body.

When using the blood vessel puncture practice model 1 containing simulated blood inside the simulated blood vessel 4, the practitioner appropriately punctured the simulated blood vessel 4 via the upper simulated tissue 5 (simulated epidermis 6). In that case, it can be confirmed that the simulated blood flows back into the indwelling needle. This allows the practitioner to wear the correct puncture operation.
Therefore, the blood vessel puncture practice model 1 can freely set the difficulty level of blood vessel puncture (running of blood vessels, shape (thickness) of blood vessels, depth of blood vessels), which is not found in the conventional practice model, and is closer to clinical practice. Can provide a sensation.

(Use of other vascular puncture practice models)
In the blood vessel puncture practice model 1 of the present invention, the lower simulated tissue 2 including the spike 3 is turned upside down so that the spike 3 does not exist between the upper simulated tissue 5 and the lower simulated tissue 2. Then, the simulated blood vessel 4 can be installed between the upper simulated tissue 5 and the lower simulated tissue 2. In this case, since the simulated blood vessel 4 is not resisted by the spike 3, it can freely move between the upper simulated tissue 5 and the lower simulated tissue 2.
By using it in such a state, since the simulated blood vessel is not buried between the spikes, there is a drawback that the position of the blood vessel is too easy to understand at the time of palpation, but it can be reproduced that the blood vessel escapes at the time of puncture.

We provide a blood vessel puncture practice model in which the difficulty level of blood vessel puncture (running of blood vessels, shape (thickness) of blood vessels, depth of blood vessels) can be freely set, and palpation similar to that of a living body is possible.

1: Blood vessel puncture practice model 2: Lower simulated tissue 3: Spike 4: Simulated blood vessel 5: Upper simulated tissue 6: Simulated epidermis 7: Case 8: Notch for passing simulated blood vessel 9: Hook-and-loop fastener 10: Hole for passing band 11: Arrow 12: Arrow 13: Arrow 14: Water absorption pad

Claims (3)

A vascular puncture practice model that includes an upper simulated tissue, a simulated blood vessel, and a lower simulated tissue that includes a seat with spikes that allow the simulated blood vessel to be placed on any run.
The first aspect of claim 1, wherein the depth of the simulated blood vessel from the upper surface can be freely set because the thickness of the upper simulated tissue and / or the thickness of the lower simulated tissue is not constant. Blood vessel puncture practice model.
The first aspect of claim 1, wherein the sum of the thickness of the upper simulated tissue and the thickness of the lower simulated tissue is constant, and the depth of the simulated blood vessel from the upper surface of the upper simulated tissue can be freely set. Blood vessel puncture practice model.

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