CN215599846U - Bionic human body venipuncture teaching aid - Google Patents

Abstract

The utility model relates to a bionic human body venipuncture teaching aid which comprises a bionic bone, a bionic subcutaneous tissue, a bionic blood vessel and a bionic skin, wherein the bionic subcutaneous tissue is detachably placed on the bionic bone, a blood vessel placing groove is formed in the bionic subcutaneous tissue, the bionic blood vessel is detachably placed on the blood vessel placing groove, and the bionic skin is coated on the outer surfaces of the bionic subcutaneous tissue, the bionic blood vessel and the bionic bone. Above-mentioned bionical human venipuncture teaching aid, this puncture teaching aid can simulate real human position, and the user can simulate real human puncture when carrying out the puncture exercise on this venipuncture teaching aid, makes the exercise more be close clinically.

Description

Bionic human body venipuncture teaching aid

Technical Field

The utility model relates to the technical field of medical teaching aids, in particular to a bionic human body venipuncture teaching aid.

Background

Subcutaneous venipuncture is one of the most common medical procedures in hospitals and is an important means for clinical diagnosis and treatment. Venipuncture generally adopts two methods in clinic: one is visual method, namely, the blood vessel is positioned in a naked eye mode, and the position of the blood vessel can be seen by naked eyes as the position of the vein of part of the population is shallow and also is very prominent; the other is the touch method, which requires many years of clinical experience and distinguishes the position of the blood vessel by touching the skin to distinguish the tactile sensation of the blood vessel and the surrounding tissue. However, in practical applications, the venous access Difficulty (DVA) often occurs due to special situations of patients, for example, patients who are infants, children, obese patients, edema patients and the like cannot easily see veins, or patients who are chemotherapy patients, patients with poor elasticity of blood vessels, first aid, shock, patients with sharply reduced blood volume, patients with blood vessel collapse and the like for many times, and further, the venous puncture of medical staff is prone to be unsuccessful for many times.

At present, the vein puncture is mainly operated manually clinically, whether the vein puncture can be successfully performed by one needle completely depends on the experience of medical care personnel, namely whether the puncture is successful and whether the vein transfusion is missed or not is determined by selecting a blood vessel part, a puncture needle inserting angle, a puncture depth, a blood vessel blood returning needle inserting angle, a blood vessel indwelling position and the like, and for medical care students nursing in a health school and medical care personnel who do not have long clinical working time, the blood vessel is accurately selected, and the needle inserting angle and the depth are controlled with certain difficulty.

Chinese patent (patent No. 201910484639.4) discloses a method for manufacturing human bionic blood vessel by using 3D printing in combination with a rollover process, the bionic blood vessel made by the above method is closer to a human body structure, students are closer to clinic when puncture injection teaching aids of the bionic blood vessel are applied in puncture, however, the venipuncture injection teaching aids in the existing market can only simulate a blood vessel shape, so that students or medical staff can not simulate other parts of intravenous injection and the structure of the human blood vessel in each age level, practice in a large amount on the product can not improve the clinical actual operation ability, and the existing teaching aids do not have real human body touch feeling, the position of the blood vessel can not be well judged, and the distance from clinical application is far.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a bionic human body venipuncture teaching aid which can simulate the touch of a real human body, and the practice puncture on the puncture teaching aid is closer to clinical application.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a bionical human venipuncture teaching aid, including bionical skeleton, bionical subcutaneous tissue, bionical blood vessel and bionical skin, bionical subcutaneous tissue can dismantle to place on bionical skeleton, be equipped with the blood vessel standing groove on the bionical subcutaneous tissue, bionical blood vessel can dismantle to place on the blood vessel standing groove, bionical skin cladding in bionical subcutaneous tissue bionical blood vessel with the surface of bionical skeleton.

As a preferable scheme, a connecting block is arranged between the bionic bones.

Preferably, the bionic bone is one or more combinations of human bones.

As a preferred scheme, it further is equipped with the blood vessel interface, the blood vessel interface embedding is to the tip of bionical blood vessel, be equipped with the draw-in groove on the blood vessel interface, the draw-in groove with the tip butt of bionical blood vessel.

As a preferable scheme, a one-way soft plug valve is further arranged on the blood vessel interface and is arranged in the blood vessel interface.

As a preferable scheme, a pressurizing device is further arranged, and the pressurizing device is connected with the bionic blood vessel.

The utility model has the beneficial effects that: above-mentioned bionical human venipuncture teaching aid, this puncture teaching aid can simulate real human position, and the user can simulate real human puncture when carrying out the puncture exercise on this venipuncture teaching aid, makes the exercise more be close clinically.

Drawings

FIG. 1 is a schematic combination diagram of a bionic human venipuncture teaching aid according to the present invention;

FIG. 2 is a schematic structural diagram of a biomimetic bone according to the present invention;

FIG. 3 is a cross-sectional view of a biomimetic blood vessel in accordance with the present invention;

fig. 4 is a cross-sectional view of a vascular interface in accordance with the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 and fig. 2, a bionical human venipuncture teaching aid, including bionical skeleton 1, bionical hypodermis 2, bionical blood vessel 3 and bionical skin 4, bionical hypodermis 2 can be dismantled and place on bionical skeleton 1, bionical blood vessel 3 can be dismantled and set up on bionical hypodermis 2, bionical skin 4 cladding is in bionical hypodermis 2, bionical blood vessel 3 and bionical skeleton 1's surface, can simulate real human condition, the user can simulate real human condition of puncturing when puncturing the exercise on this venipuncture teaching aid, it is more clinical to make the exercise. Bionic skeleton 1 is one or more combination of human skeleton, bionic skeleton 1 can be the skeleton at each position of whole body promptly, bionic human venipuncture teaching aid can be bionical arm, bionical low limbs, bionical thorax, positions such as bionical pelvic cavity, can simulate puncture human position everywhere, in this embodiment, only use bionic human venipuncture teaching aid to be bionical back of the hand puncture teaching aid for the example, then bionic skeleton 1 is including phalanx 11, carpal bone 12, ulna 13 and radius 14, phalanx 11, carpal bone 12, ulna 13 and radius 14 are with real human back of the hand structural connection. Bionic skeleton 1 still includes the connecting block (not shown in the figure), connects through the connecting block between phalange 11, carpal bone 12, ulna 13 and the radius 14, and the connecting block can be with each bionic skeleton 1 reciprocal anchorage, prevents that bionic skeleton 1 is not hard up to break away from, and the connecting block is silica gel, can simulate the cartilage structure on the true human body, makes can rotation each other between phalange 11, carpal bone 12, ulna 13 and the radius 14, simulates true human activity condition.

Further, the bionic blood vessel 3 is fixed with the outline of the blood vessel through a structural adhesive according to the position and the shape of the blood vessel of the anatomical part of the human blood vessel, a blood vessel placing groove is arranged on the bionic subcutaneous tissue 2, the bionic blood vessel 3 after being fixed in shape can be detachably placed on the blood vessel placing groove, the bionic blood vessel 3 can be fixed, and the bionic blood vessel 3 is prevented from deviating when the puncture is practiced. Bionic blood vessel 3 is made by silicon rubber, bionic skin 4 is the bionic silica gel piece, bionic skin 4's thickness is 0.3-1.5mm, and can simulate the skin structure of different age layers, can let the user simulate the different skin thickness of puncture, the crowd of different skin structures, strengthen clinical operability, bionic blood vessel 3 is formed by silicon rubber preparation, be convenient for really simulate puncture blood vessel sensation, bionic subcutaneous tissue 2 is including bionical fat and bionical muscle, can simulate real human body, bionic subcutaneous tissue 2 is the sponge, be convenient for tailor, the sculpture, and the material is soft, and is rich in elasticity, the sense of touch of the real human subcutaneous tissue of simulation that can be better.

In this embodiment, the structural adhesive may be a thermoplastic resin adhesive, a low-temperature dual-curing adhesive, or a rubber-type adhesive, which facilitates molding of the biomimetic blood vessel 3. Wherein, the thermoplastic resin adhesive is prepared by taking thermoplastic resin such as polymethacrylate, polyvinyl acetal and the like as main raw materials, and the thermoplastic resin adhesive becomes soft when heated and becomes hard when cooled, and has better adhesiveness and elasticity; the low-temperature dual-curing adhesive is prepared by compounding acrylic resin and hydrogenated epoxy resin; the rubber type adhesive is prepared from synthetic rubber or modified natural rubber such as chloroprene rubber, nitrile rubber, polysulfide rubber and the like.

Referring to fig. 3 and 4, a blood vessel interface 31 is arranged on the bionic blood vessel 3, the blood vessel interface 31 is embedded into the bionic blood vessel 3, the bionic blood vessel 3 is clamped by the two blood vessel interfaces 31, the blood vessel interface 31 is conical, so that the end of the blood vessel interface 31 is conveniently connected with the bionic blood vessel 3, a clamping groove 311 is arranged on the blood vessel interface 31, the clamping groove 311 is abutted against the end part of the bionic blood vessel 3, the bionic blood vessel 3 can be clamped, and a plurality of clamping grooves 311 are arranged, so that the bionic blood vessels 3 with different sizes can be fixed. The blood vessel interface 31 is further provided with a one-way soft plug valve 32, the one-way soft plug valve 32 is arranged in the blood vessel interface 31, and the one-way soft plug valve 32 seals blood in the bionic blood vessel 3 to prevent the blood in the bionic blood vessel 3 from flowing out of the one-way soft plug valve 32.

It is further provided with a pressurizing device which is connected with the bionic blood vessel 3. In this embodiment, the pressurizing device may be a needle tube, and a certain amount of blood is injected into the bionic blood vessel 3 through the needle tube, so that the pressure inside the bionic blood vessel 3 is greater than the external pressure; the pressurizing device can also continuously provide blood for the bionic blood vessel 2 in an intravenous injection mode for the blood in the transfusion bottle so as to maintain the blood pressure in the bionic blood vessel 3.

This bionic human venipuncture teaching aid is when using, at first injects a certain amount of blood into bionical blood vessel 3 through the needle tubing, makes the pressure in bionical blood vessel 3 be greater than external pressure, when puncturing, because there is the pressure differential between the needle tubing of puncture usefulness and bionical blood vessel 3, the blood in bionical blood vessel 3 can flow in order to release pressure to the needle tubing to reach the effect of blood backward flow when the simulation puncture is successful. In addition, the blood in the blood bag or the transfusion bottle can be continuously supplied to the bionic blood vessel 3 by the intravenous injection method to maintain the blood pressure in the bionic blood vessel 3, the effect of blood backflow can be simulated when the puncture is successful, and the blood in the blood bag or the transfusion bottle flows into the bionic blood vessel 3 by the intravenous injection method when the blood in the bionic blood vessel 3 flows back to the puncture needle tube for exercise. If the user needs to change the shape of the bionic blood vessel 2, the bionic skin 4 can be firstly torn off, the bionic blood vessel 3 is peeled off from the bionic subcutaneous tissue 2, the bionic blood vessel 3 is heated to soften the resin composite material, and the resin composite material is peeled off from the bionic blood vessel 3; and fixing the contour of the bionic blood vessel 3 by the resin composite material again according to the position and the shape of the new blood vessel, engraving sponge again according to the contour of the bionic blood vessel 3 to prepare new bionic subcutaneous tissue, and combining to form a new bionic human body venipuncture teaching aid.

Referring to fig. 1 and fig. 2, a method for manufacturing the bionic human venipuncture teaching aid includes the following steps:

step 0, determining parameters of a bionic bone 1 of a bionic human body, the thickness and the size of a bionic subcutaneous tissue 2, the type and the trend of a bionic blood vessel 3 and the thickness of a bionic skin 4; in this embodiment, the bionic dorsum manus is selected as an example.

Step 1, manufacturing a bionic skeleton 1;

wherein, step 1.1, select bionical skeleton mould according to bionical human skeleton parameter, make bionical phalange 11 through mould injection moulding, carpal bone 12, ulna 13 and radius 14, put according to its position after the preparation is accomplished, step 1.2, adopt soft silica gel to fill bionical skeleton clearance and form the connecting block, make and couple together through the connecting block between each bionical skeleton 1, and the connecting block can simulate cartilage joint, make and to simulate real human skeleton crooked between each bionical skeleton 1, when the user carries out the puncture training on this teaching aid, more press close to clinical puncture.

Step 2, selecting a bionic blood vessel;

the bionic blood vessel is manufactured through a 3D printing technology according to the blood vessel distribution and puncture practice requirements on the back of a hand of a real human body, the shape of the bionic blood vessel is changed through the resin composite material, the distribution of the bionic blood vessel is consistent with the blood vessel on the back of the hand of the real human body, the blood vessel interfaces are respectively installed at the end parts of the bionic blood vessel, and blood in the bionic blood vessel is prevented from flowing out.

Step 3, manufacturing a bionic subcutaneous tissue;

wherein, step 3.1, according to the position of 2 sizes of subcutaneous tissue and distribution on the human back of the hand, the sponge is cut out into 2 shapes of real human subcutaneous tissue as bionical subcutaneous tissue 2, step 3.2, according to the distribution position of real human blood vessel on subcutaneous tissue 2, carve the blood vessel standing groove on bionical subcutaneous tissue 2, step 3.3, place bionical blood vessel 3 after having moulded in step 2 in the blood vessel standing groove, can fix bionical blood vessel, prevent bionical blood vessel when carrying out the puncture exercise and remove.

Step 4, combining the bionic bone, the bionic subcutaneous tissue and the bionic skin;

and (3) placing the bionic subcutaneous tissue combined in the step (3) on the bionic bone in the step (1), carrying the bionic subcutaneous tissue and the surface of the bionic bone, and coating the bionic skin on the bionic bone and the bionic subcutaneous tissue to finish the bionic human body arm.

Step 5, connecting a pressurizing device;

the pressurizing device is connected with the bionic blood vessel, a certain amount of blood is injected into the bionic blood vessel through the needle tube, so that the pressure in the bionic blood vessel is larger than the external pressure, or the blood in the blood bag or the hanging bottle is continuously provided for the bionic blood vessel in an intravenous injection mode, the blood pressure in the bionic blood vessel is maintained, when puncture is carried out, the blood in the bionic blood vessel flows into the needle tube to release the pressure due to the fact that pressure difference exists between the needle tube for puncture and the bionic blood vessel, and therefore the effect of blood backflow when the puncture is simulated successfully is achieved.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles of the utility model described in the claims should be included in the claims.

Claims (6)

1. The utility model provides a bionical human venipuncture teaching aid, its characterized in that, including bionical skeleton, bionical subcutaneous tissue, bionical blood vessel and bionical skin, bionical subcutaneous tissue can dismantle to place on bionical skeleton, be equipped with the blood vessel standing groove on the bionical subcutaneous tissue, bionical blood vessel can dismantle to place on the blood vessel standing groove, bionical skin cladding in bionical subcutaneous tissue bionical blood vessel with the surface of bionical skeleton.

2. The bionic human body venipuncture teaching aid of claim 1, wherein a connecting block is arranged between the bionic bones.

3. The bionic human body venipuncture teaching aid of claim 2, wherein the bionic bone is one or more combinations of human bones.

4. A bionic human body venipuncture teaching aid according to any one of claims 1 to 3, further comprising a blood vessel interface embedded in the end of the bionic blood vessel, wherein the blood vessel interface is provided with a clamping groove, and the clamping groove is abutted against the end of the bionic blood vessel.

5. The bionic human body venipuncture teaching aid of claim 4, wherein a one-way soft plug valve is further arranged on the blood vessel interface, and the one-way soft plug valve is arranged in the blood vessel interface.

6. The bionic human body venipuncture teaching aid of claim 4, further comprising a pressurizing device connected with the bionic blood vessel.

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