JP5649676B2 - Injection practice tool - Google Patents

Description

  The present invention relates to an injection practice tool for medical personnel such as doctors and nurses. More specifically, the present invention relates to an injection practice tool that reproduces a state close to an actual injection sensation and improves the practice effect.

Injection is an indispensable technique for medical personnel such as doctors and nurses, and the lack of skills immediately hurts the viewer. However, improvement of injection technology has largely depended on the accumulated experience of each medical staff, and there has been no injection practice tool for effective training.
Patent Document 1 discloses an invention of an injection practice instrument in which a simulated blood vessel is disposed between a lower simulated muscle layer and an upper simulated muscle layer, and an injection needle is inserted from above the upper simulated muscle layer. Patent Document 2 describes an invention of a blood vessel injection simulator in which an artificial blood vessel is disposed between a base provided with a sponge and an artificial skin provided with a gel material, and a needle is inserted from above the artificial skin. The idea that an angry state (congestion state) can be simulated by using a belt is disclosed.
The invention described in Patent Document 1 is that a polyurethane gel material is used as a simulated muscle layer and a polyurethane material is used as a simulated blood vessel, thereby realizing an injection practice tool that is strong and close to the feel of the human body.

JP 2007-206379 A Japanese Utility Model Publication No. 10-161522

In the injection practice tool described in Patent Document 1, a polyurethane gel material having semi-fluidity is used as a simulated muscle layer. Since a gel material is used, handling is not always easy. For example, the upper simulated muscle layer is not easy to manufacture because the inside of the bag-like body is filled with a polyurethane gel material, and the injection needle penetrates the bag-like body to pierce the simulated blood vessel, so that it is repeated for a long time. It is difficult to use. Moreover, it was not possible to reproduce the angered state using the actual tourniquet.
In the invention described in Patent Document 2, it is possible to reproduce an angered state using a tourniquet, but by simply tying a simulated blood vessel (artificial blood vessel) with the tourniquet, the internal pressure of the blood vessel It is difficult to reproduce a realistic state because it is not possible to sufficiently raise the image.

In view of the above-mentioned drawbacks of the prior art, an object is to realize an injection practice tool that can easily realize an angry state where internal pressure is applied to a simulated blood vessel, practice in a realistic state, and improve the practice effect more It is an invention.
Another object of the present invention is to provide an injection practice tool that is easy to handle and can reliably reproduce, for example, a certain anger state, and is easy to prepare before use and clean up after use. It is the purpose.

The invention according to claim 1, which achieves the above object, is characterized in that the simulated muscle layer 2 is adhered to the upper surface of the main body 1 which is vertically long and bulges in the center in the width direction so as to form a substantially semi-cylindrical shape as a whole. The simulated blood vessel 3 is arranged on the simulated muscle layer 2, the upper portion of the simulated blood vessel 3 is covered with the simulated skin layer 4, and an injection needle is inserted from above to simulate the injection.
A simulated skin layer 4 covering the upper side of the simulated blood vessel 3 is stretched on a frame 5 disposed on the upper surface of the main body 1, and the simulated blood vessel 3 is pressed against the upper surface of the main body 1, thereby simulating the simulated blood vessel 3 with the simulated muscle layer 2. And the simulated skin layer 4.

The simulated blood vessel 3 has a tubular shape with a closed end formed of a flexible material such as natural rubber, and the open end is connected to the simulated blood bag 6. The simulated blood bag 6 is made of a flexible material and sealed with simulated blood.
A simulated blood bag accommodating portion 7 for accommodating the simulated blood bag 6 is formed at one end portion in the longitudinal direction of the main body 1. The simulated blood vessel 3 is extended on the simulated muscle layer 2 from the simulated blood bag 6 accommodated in the simulated blood bag accommodating portion 7. In the simulated blood bag accommodating portion 7 of the main body 1, a holding tool 8 for the accommodated simulated blood bag 7 is provided, and the simulated blood bag 6 is compressed by the pressing tool 8, whereby the simulated blood bag 6 and the simulated blood vessel 3 The pressure of the simulated blood can be increased.

The invention according to claim 2 relates to a specific structure of the frame.
The frame 5 has a shape along the outer surface of the main body 1. A fixing means for the main body 1 is provided at a side edge portion in the longitudinal direction of the frame body 5 having a shape along the outer surface of the main body 1 so that it can be attached to and detached from the main body 1. The frame body 5 is formed with a fold line 9 in an inner portion of the fixing means, and a frame portion in which the simulated skin layer 4 is stretched by bending along the fold line 9 is formed on the upper surface of the main body 1. It is possible to move toward and away.
On the side edge portion opposite to the bend line 9, there is provided locking means that can be freely engaged with and disengaged from the main body 1, that is, locking means that locks the frame body 5 while being pressed against the surface of the main body.

  The invention described in claim 3 relates to the structure of the simulated blood bag accommodating portion 7. The simulated blood bag storage portion 7 formed on the main body 1 is formed as an inclined portion having a certain width adjacent to the longitudinal position of the simulated muscle layer 4 to be attached to the surface of the main body 1. The simulated blood bag 6 is accommodated in the simulated blood bag accommodating portion 7, and the simulated blood vessel 3 protruding from the simulated blood bag 6 toward the front is extended on the simulated muscle layer 2. The simulated blood bag housing 6 is provided with a presser 8 that rotates around the base end of the simulated blood bag housing 7 as a fulcrum and presses the simulated blood bag 6 with a pressing surface 8a formed on the front surface in the rotational direction. That is.

In the invention according to claim 4, a recess that matches the planar shape of the simulated blood bag 6 is formed on the bottom surface of the simulated blood bag housing 7 so that the simulated blood bag 6 does not shift in the simulated blood bag housing 7. Forming place 10.
In the invention according to claim 5, the main body 1 having a substantially semi-cylindrical shape is formed in a shell shape having an open bottom surface, and a back cover 11 made of a flexible material is attached to the bottom surface of the main body 1, and a syringe is attached to the back cover 11. Forming a storage portion 12 for storing a tool such as

According to the first aspect of the present invention, the simulated blood bag 6 is accommodated in the simulated blood bag accommodating portion 7 of the main body 1, the simulated blood vessel 3 is arranged in an arbitrary shape on the simulated muscle layer 2, and the frame body 5 is covered. Therefore, it can be easily set in a state where injection can be practiced. And the positional relationship of a blood vessel and a needle | hook etc. can be visually observed by opening the frame 5 during practice.
Since the simulated blood bag accommodating portion 7 includes a presser 8 for the simulated blood bag 6, the anger state caused by the tourniquet is easily and reliably reproduced by pressing the simulated blood bag 6 with the presser 8. be able to. Since the anger state realized in this way is to pressurize the simulated blood bag 6 to increase the internal pressure, as in the case of actual blood vessel injection, a reverse flow into the syringe is performed in the same manner as in the case of actual blood vessel injection. The blood phenomenon can also be reproduced.

The simulated blood bag 6 is provided in a sealed state with the simulated blood vessel 3 connected and filled with the simulated blood inside, and by making it disposable, it effectively reduces preparation time for the injection practice tool and cleanup time and is effective practice Can be performed. Since the simulated blood bag 6 can be provided at low cost, the maintenance cost can be reduced.
However, the simulated blood bag 6 can be reused. That is, since the simulated blood vessel 3 is punctured by the injection needle by use, it is discarded and only the simulated blood bag, that is, the simulated blood case 14 is collected, filled with the simulated blood, and connected to the new simulated blood vessel 3 Can be reused.

According to the second aspect of the invention, the frame body 5 on which the simulated skin layer 4 is stretched is detachable from the main body 1. Thereby, by preparing a plurality of types of frame members in which simulated skin layers of different materials are stretched and simply replacing the frame member 5, it is possible to easily practice different skin sensations. Moreover, the user owns only the frame, and can be used by appropriately attaching to the main body for joint use.
When the simulated blood vessel 3 is arranged on the simulated muscle layer 2 and the frame body 5 is covered from above, the frame portion can be easily opened and closed by folding it at the folding line of the frame body 5 (forming a living hinge), The pressing state is maintained by the locking means, and the injection practice can be performed with confidence.

  According to the third aspect of the present invention, the simulated blood bag 6 can be easily attached to the main body 1, and the presser that rotates around the base end of the simulated blood bag receiving portion 7 as a presser is operated. By doing so, a certain anger state can be realized, and it can concentrate on the practice of injection.

According to the fourth aspect of the present invention, the simulated blood bag 6 can be reliably disposed at a predetermined position of the simulated blood bag storage portion 7 and the simulated blood bag can be efficiently attached.
According to the fifth aspect of the present invention, the storage unit 12 formed on the back cover 11 of the main body 1 can be used to collect items necessary for training such as a syringe, a syringe needle, and a simulated blood bag.

FIG. 1 is a perspective view showing a portable practice of an injection practice tool according to the present invention in a state where a frame of a simulated skin layer is opened; FIG. 2 is a perspective view with the simulated blood bag of FIG. 1 removed, FIG. 3 is a perspective view showing a state in which the frame body of the simulated skin layer is closed, FIG. 4 is a plan view showing a state in which the frame of the simulated skin layer is opened, 5 is a cross-sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a plan view of only the frame, FIG. 8 is a side view of only the frame, FIG. 9 is a perspective view of a simulated blood bag, FIG. 10 is a longitudinal sectional view of a presser mounting portion of the main body.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an injection practice tool according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an embodiment of an injection practice tool according to the present invention, in which the frame of the simulated skin layer is opened, and FIG. 5 is a state of opening the frame of the simulated skin layer of FIG. FIG.

  An injection practice tool according to the present invention includes a main body 1 for adhering a simulated muscle layer 2 on the upper surface, a simulated blood bag 6 connected to a simulated blood vessel 3 disposed on the pseudo muscle layer 2 and supplying simulated blood, A frame body 5 is provided to stretch a simulated skin layer 4 that covers the simulated blood vessel 3. Then, the simulated blood vessel 3 is disposed on the simulated muscle layer 2 of the main body 1, the simulated blood vessel 3 is covered with the simulated skin layer 4 stretched on the frame body 5, and the simulated blood vessel 3 is covered from above the simulated skin layer 4. A needle is inserted to practice vascular injection.

  The main body 1 is made of a strong synthetic resin material such as ABS resin, and is vertically long and bulges in the center in the width direction into a projecting arc shape, and is molded into a kamaboko shape as a whole. Since the main body shape is similar to the curved shape of the arm or leg, the practice effect can be improved. The main body 1 has a shell shape opened downward as a whole, and a back cover 11 is attached to the opened lower surface.

  A simulated muscle layer 2 made of a low-foaming material that reproduces the feel of muscle, such as low-foam urethane, is attached to the surface of the central portion 1 of the main body 1 that bulges in a kamaboko shape. The range in which the simulated muscle layer 2 is applied is wide enough to practice injection on the upper surface of the main body as shown in FIG. In the central region of the range where the simulated muscle layer 2 is attached, a step portion 13 is formed so that the simulated muscle layer 2 is lifted somewhat and the simulated skin layer 4 pressed from above is considered to be in close contact.

The simulated blood vessel 3 disposed on the simulated muscle layer 2 is supplied as a disposable simulated blood bag 6. As shown in FIG. 9, the simulated blood bag 6 connects the simulated blood vessel 3 to a simulated blood case 14 made of, for example, vinyl chloride, which can store simulated blood. The simulated blood case 14 is formed with a flat protruding portion 15 at the base end of a bag (case) in the upper part of the drawing, and a connecting tube (PVC tube) 16 protrudes toward the front, and the connecting tube 16 is made of natural rubber. A blind cylindrical simulated blood vessel 3 formed by a method such as the above is connected, and a cylindrical fixing ring 17 (PVC tube) is attached to the connected portion and integrated. The simulated blood filled in the simulated blood case 14 is colored red to give a sense of reality, and is sealed in a state where air does not enter inside including the simulated blood vessel, and the entire simulated blood bag 6 is sealed and packaged. Is preferred. By keeping the simulated blood bag 6 and the simulated blood vessel 3 free of air, it is possible to prevent bubbles from entering the syringe due to a mixture of liquid and air when the practitioner pricks the needle.
Further, by making the simulated blood bag 6 completely sealed, deterioration of the simulated blood bag 6, particularly the simulated blood vessel 3 made of natural rubber, can be prevented.

  A simulated blood bag accommodating portion 7 is disposed adjacent to the simulated muscle layer 2 at the base end portion of the main body 1. The simulated blood bag accommodating portion 7 is a recess having a width into which the simulated blood case 14 enters, and is formed on an inclined surface that descends from the attachment surface of the simulated muscle layer 2 toward the base, and is disposed on the inclined surface. The simulated blood vessel 3 protruding from the back 6 can be placed on the simulated muscle layer 2 in a natural state.

  On the surface (bottom surface) of the simulated blood bag receiving portion 7, a recess 10 having a shape matching the shape of the simulated blood case 14 of the simulated blood bag 6 is provided so that the simulated blood bag can be set at a fixed position. (Fig. 2). Further, a slit 18 into which the protruding portion 15 protruding from the simulated blood case 14 enters is provided at the inner back (base end portion) of the recess 10. The recess 10 and the slit 18 have an effect that the simulated blood bag 6 can be reliably set at a predetermined position of the simulated blood bag accommodating portion 7.

  In the simulated blood bag storage portion 7, a presser 8 that presses the simulated blood bag 6, specifically, the simulated blood case 14 of the simulated blood bag 6 is disposed. The presser 8 is pivotable toward the front side by supporting the base end portion on the base end portion of the simulated blood bag storage portion 7 with a shaft 19. A pressing surface 8a is formed on the bottom surface of the presser 8 so that the simulated blood bag 6 can be effectively pressed. The pressing surface 8a in the illustrated embodiment is formed by a plurality of narrow end surfaces.

With the above configuration, when the presser 8 is rotated forward (forward), the simulated blood bag 6 in which the pressing surface 8a is disposed in the recess 10 of the simulated blood storage unit 7, specifically, simulated blood. The simulated blood case 14 of the bag 6 is pressed from above, and the internal pressure of the simulated blood filled therein is increased. This increase in internal pressure is the same for the simulated blood in the simulated blood vessel 3, and realizes a state similar to the actual anger state.
Locking claws 20 and 20 are provided at the distal end of the presser 8 and the locking claws 20 and 20 are engaged with locking portions 21 and 21 formed on the main body 1 to maintain an anger state with a constant internal pressure. To be able to. To release the angry state, the locking state by the locking claw is released, and the presser 8 is rotated upward.

The simulated blood vessel 3 disposed on the simulated muscle layer 2 is disposed in a straight line or a meandering state according to the skill of the practitioner.
The upper side of the simulated blood vessel 3 is covered with a simulated skin layer 4. The simulated skin layer 4 that covers the upper side of the simulated blood vessel 3 is stretched over a frame 5 disposed on the upper surface of the main body 1, and the simulated blood vessel 3 is simulated by muscular muscles by pressing the frame 5 against the upper surface of the main body 1. It is sandwiched between layer 2 and simulated skin layer 4.

  As can be understood from FIGS. 7 and 8, the frame body 5 on which the simulated skin layer 4 is stretched has a curved central portion that matches the curved shape of the upper surface of the main body 1 so as to cover the upper surface of the main body 1. Cut out to make a frame. The frame body 5 in the illustrated embodiment is provided with fitting projections 22 and 22 at two front and rear portions as fixing means to the main body 1 on the side edge portion in the longitudinal direction, and the fitting projection 22 is formed on the main body. The entire frame 5 is detachable from the main body 1 by being fitted into the hole 23.

A fold line 9 is formed on the frame 5 in the longitudinal direction of the inner portion of the fitting protrusions 22, 22, and the simulated skin layer 4 is stretched by bending along the fold line 9. The frame portion can be moved toward and away from the upper surface of the main body 1, that is, can be opened and closed. Then, by covering the upper surface of the main body 1 with the frame body 5 and pressing it, a practice state of injection in which the simulated blood vessel 3 exists under the simulated skin layer 4 is realized.
On the side edge of the frame 5 opposite to the side edge on which the fitting protrusions 22 and 22 are provided, locking claws 24 and 24 are provided as locking means that can be freely engaged and disengaged. The state in which the frame 5 is pressed against the surface of the main body can be maintained by being locked in the locking holes 25, 25 formed on the side surface of 1.

The simulated skin layer 4 is perforated by use (practice). Therefore, it is preferable to replace the simulated skin layer 4 as appropriate. Therefore, by making the frame 5 detachable, for example, the user can own only the frame 5 and practice without hesitation and share the main body 1.
In order to attach the simulated skin layer 4 to the frame 5, the simulated skin layer 4 having a desired material or thickness is attached to the frame 5 using, for example, a double-sided adhesive tape according to the skill of the practitioner.
In the drawing, reference numeral 26 denotes a knob for opening the frame.

As described above, the back cover 11 is attached to the bottom surface of the main body 1 which is formed in a shell shape and is opened downward. If the back cover 11 is made of an elastomer so that it is relatively flexible and can be freely attached and detached, it is stable and easy to use even when practicing injection. Further, if a box-shaped storage portion 12 is formed in a portion to be inserted into the main body 1 of the back cover 11, a syringe and a syringe needle necessary for practice can be stored in the storage portion 12.
The storage part 12 can be formed in an arbitrary shape, and for example, a storage part for each article can be formed by a partition.

DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Simulated muscle layer, 3 ... Simulated blood vessel, 4 ... Simulated skin layer, 5 ... Frame body, 6 ... Simulated blood bag, 7 ... Simulated blood bag accommodating part, 8 ... Presser, 8a ... Pressing surface, 9 ... folding line, 10 ... recess, 11 ... back cover, 12 ... storage part, 13 ... step part, 14 ... simulated blood case, 15 ... protrusion, 16 ... connecting pipe, 17 ... fixing ring, 18 ... slit, 19 ... Shaft, 20 ... Locking claw, 21 ... Locking part, 22 ... Fitting projection, 23 ... Mounting hole, 24 ... Locking claw, 25 ... Locking hole, 26 ... Knob.

Claims (5)

Vertically, the center in the width direction bulges in a salient arc shape, and a simulated muscle layer is attached to the upper surface of the main body that is formed in a substantially kamaboko shape as a whole, and a simulated blood vessel is placed on the simulated muscle layer, In the injection practice tool that places a simulated skin layer over the blood vessel,
The simulated skin layer is stretched on a frame disposed on the upper surface of the main body, and by pressing the frame against the upper surface of the main body, the simulated blood vessel is sandwiched between the simulated muscle layer and the simulated skin layer,
The simulated blood vessel is made of a flexible material such as natural rubber and has a closed end, and the open end is formed of a flexible material and connected to a simulated blood bag that seals the simulated blood.
Forming a simulated blood bag housing portion for housing the simulated blood bag at one end in the longitudinal direction of the main body, and extending the simulated blood vessel from the simulated blood bag housed in the simulated blood bag housing portion onto the simulated muscle layer; In the simulated blood bag storage portion, a holding tool for the stored simulated blood bag is provided, and the pressure of the simulated blood bag and the simulated blood in the simulated blood vessel can be increased by pressing the simulated blood bag with the pressing tool. An injection practice tool characterized by being able to do so.   The frame body has a shape along the outer surface of the main body, and is provided with fixing means to the main body at the side edge portion in the longitudinal direction so that it can be attached to and detached from the main body 1 and is bent to an inner portion than the fixing means. Forming a line and folding along the fold line, the frame portion with the simulated skin layer stretched can be opened and closed toward the upper surface of the main body, and on the side edge portion opposite to the fold line, 2. The injection practice tool according to claim 1, further comprising a locking means that can be freely engaged and disengaged.   The simulated blood bag storage part formed on the main body is formed as an inclined part having a constant width adjacent to the longitudinal position of the simulated muscle layer attached to the main body, and the simulated blood bag is stored in the simulated blood bag storage part. A simulated blood vessel that protrudes from the simulated blood bag toward the other side is extended and arranged on the simulated muscle layer, and the simulated blood bag housing portion is rotated around the base end of the simulated blood bag housing portion as a fulcrum. The injection practice tool according to claim 1 or 2, wherein a pressing tool that presses the simulated blood bag by a pressing surface formed on the front surface in the moving direction is arranged.   The injection practice tool according to claim 3, wherein a recess that matches the planar shape of the simulated blood bag is formed on the bottom surface of the simulated blood bag housing portion so that the simulated blood bag does not cause misalignment. .   The main body, which has a substantially semi-cylindrical shape, is formed in a shell shape with the bottom open, a flexible back cover is attached to the bottom of the main body, and a storage part for storing tools such as a syringe is formed on the back cover. The injection practice tool according to any one of claims 1 to 4.

Images