CN214671388U - Venipuncture model - Google Patents

Abstract

The utility model relates to the technical field of training models, and discloses a venipuncture model, which comprises a chest model and at least one large arm model rotationally connected with the chest model; the upper arm model comprises an upper arm skin layer; the upper arm skin layer comprises a subcutaneous tissue layer, a dermis layer and an epidermis layer which are sequentially distributed and connected from inside to outside. The utility model provides a venipuncture model is true and highly spent, more accords with clinical actual operation sight.

Description

Venipuncture model

Technical Field

The utility model relates to a training model technical field especially relates to a venipuncture model.

Background

Venipuncture is the most basic technical operation in clinical care, and the success of one-time puncture plays an important role in clinical treatment and rescue. In order to facilitate the practice of venipuncture by a medical trainee, a medical venipuncture model is commonly used in training. The medical venipuncture model is a simulated human body model. The existing venipuncture model completely simulates the upper half body design of normal adults, has harmonious proportion and obvious body surface marks, and comprises a sternal notch, sternocleidomastoid muscle, clavicle, ribs and the like. The practicer can refer to the model to perform the procedures of measurement, puncture, tube placement and the like according to the standardized procedure.

However, the included angle between the large arm model and the chest model of the arm of the existing venipuncture model is less than 90 degrees, and the shoulder joint is fixed and cannot be unfolded outwards, so that the clinical practical operation scene is not met. Moreover, the existing model only has one layer of epidermis, and is influenced by the material of the model, so that the hand feeling of the model is poor and is different from the hand feeling of actual puncture.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the vein puncture model is high in degree of reality and better accords with clinical actual operation scenes.

In order to achieve the above object, the present invention provides a venipuncture model, which comprises a chest model and at least one large arm model rotatably connected with the chest model; the upper arm model comprises an upper arm skin layer; the upper arm skin layer comprises a subcutaneous tissue layer, a dermis layer and an epidermis layer which are sequentially distributed and connected from inside to outside.

Optionally, the thickness of the subcutaneous tissue layer is 0.6mm to 0.8 mm; the thickness of the corium layer is 0.4 mm-0.6 mm; the thickness of the surface layer is 0.15 mm-0.25 mm.

Optionally, the chest model further comprises a neck model rotatably connected to the chest model.

Optionally, the chest model comprises a chest catheter and a chest skin layer wrapped outside the chest catheter; the chest skin layer comprises three chest skin layers which are sequentially distributed from inside to outside and are connected; the material of each chest skin layer is silica gel.

Optionally, the breast model further comprises a breast frame; the chest frame is arranged in the chest skin layer, and the chest catheter is encircled outside the chest frame; an infusion port catheter is arranged between the chest frame and the chest skin layer.

Optionally, the forearm model further comprises a forearm catheter disposed inside the subcutaneous tissue layer;

the large arm catheter and the chest catheter are both silica gel catheters.

Optionally, the inner diameters of the large arm catheter and the chest catheter are both 3 mm-5 mm;

the distance between the large arm catheter and the large arm skin layer is 10-25 mm;

the distance between the chest catheter and the chest skin layer is 10 mm-25 mm.

Optionally, the large arm catheter and/or the chest catheter have a vascular interface with external threads on the end of the vascular interface.

Optionally, still include transfer line and infusion bag, the one end of transfer line with infusion bag is connected, the other end of transfer line with blood vessel interface detachably connects.

Optionally, a pump body detachably connected with the blood vessel interface is further included.

The utility model provides a pair of venipuncture model compares with prior art, and its beneficial effect lies in: the utility model discloses a big arm model can rotate around the chest model, simulates the scene that the puncture was accomplished to the rotatable patient arm of medical personnel under real scene, highly is close with the clinical operation sight of reality, is favorable to the practitioner to practise the puncture technique. The large arm skin layer comprises a subcutaneous tissue layer, a dermis layer and an epidermis layer which are sequentially arranged from inside to outside, so that real human skin is simulated, and the sense of reality of exercise operation is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a venipuncture model according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the venipuncture model after the large arm model of the embodiment of the present invention is rotated;

fig. 3 is a schematic cross-sectional structure diagram of a venipuncture model according to an embodiment of the present invention;

FIG. 4 is a schematic view of a subcutaneous tissue layer, a dermal layer, and an epidermal layer of an embodiment of the present invention;

fig. 5 is a schematic structural view of the neck model according to the embodiment of the present invention when it rotates.

In the figure, 1, a chest model; 11. a chest catheter; 12. a chest skin layer; 2. a large arm model; 21. a large arm catheter; 22. the upper arm skin layer; 221. a subcutaneous tissue layer; 222. a dermis layer; 223. a skin layer; 3. a neck model.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms used in the present invention are used in the description of the present invention, and it should be understood that the terms "center", "front", "back", "left", "right", "inside", "outside", and the like used in the present invention are used as the terms of the orientation or the positional relationship shown in the drawings, and are only for convenience of description of the present invention and simplification of the description, and do not indicate or imply that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It should be understood that "left" and "right" in the present invention are directions based on the human body; the words "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of the mannequin.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, the venipuncture model of the preferred embodiment of the present invention comprises a chest model 1 and at least one large arm model 2 rotatably connected to the chest model 1; the forearm model 2 comprises a forearm skin layer 22; the upper arm skin layer 22 includes a subcutaneous tissue layer 221, a dermal layer 222 and an epidermal layer 223 which are sequentially distributed and connected from the inside to the outside. The epidermis layer 223 is disposed outermost, the subcutaneous tissue layer 221 is disposed innermost, and the dermis layer 222 is disposed between the subcutaneous tissue layer 221 and the epidermis layer 223. The subcutaneous tissue layer 221, the dermal layer 222 and the epidermal layer 223 in this embodiment are all made of silicone.

Based on the technical scheme, the large arm model 2 simulates the large arm of the human body and is connected to the left side or the right side of the chest model 1. The big arm model 2 is rotatably connected on the chest model 1, and the big arm model 2 can rotate around the chest model 1 to simulate the rotation of the arms of a human body around shoulder joints. In the process of using the venipuncture model, a practicer can completely puncture the venipuncture model according to the central vein or transfusion port catheterization process by matching with other trainees, so that the clinical practical operation situation is met, and the degree of reality is high. The forearm model 2 includes a forearm frame simulating a forearm skeleton, a forearm catheter 21 simulating a blood vessel, and a forearm skin layer 22 simulating skin. The great arm conduit 21 is arranged around the great arm frame and is positioned inside the subcutaneous tissue layer 221; the forearm skin layer 22 is wrapped around the forearm frame and the forearm catheter 21. The upper arm skin layer 22 comprises three layers, namely a subcutaneous tissue layer 221, a dermis layer 222 and an epidermis layer 223, and simulates three layers of skin of a human body, so that the rubber residue is less, the hand feeling of puncture and skin breaking is closer, and the tunnel type picc catheterization operation can be conveniently practiced.

The venipuncture model further comprises a hinge, and the chest model 1 and the large arm model 2 are connected on the chest model 1 in a rotatable mode through the hinge. The hinge in this embodiment is a spherical joint at the end of the THK rod, simulating a shoulder joint, and allowing an outward rotation angle of 90 °.

Specifically, as shown in fig. 4, for closer reality, the thickness of the subcutaneous tissue layer 221 is defined as a, a ═ 0.6mm to 0.8 mm; the thickness of the dermis layer 222 is defined as b, and b is 0.4mm to 0.6 mm; the thickness of the epidermis 223 is defined as c, which is 0.15mm to 0.25mm, and is close to the actual human skin thickness. The subcutaneous tissue layer 221 in this embodiment is 0.7mm thick, the dermal layer 222 is 0.5mm thick, the epidermal layer 223 is 0.2mm thick, and the upper arm skin layer 22 is 1.4mm thick.

In addition, the venipuncture model also comprises a neck model 3 rotatably connected to the chest model 1. The neck model 3 simulates the neck of a human body, so that a practicer can conveniently puncture the neck. The neck model 3 is connected with the chest model 1 by a THK rod end spherical joint, so that the neck model 3 can rotate 45 degrees left and right relative to the chest model 1 (see figures 1 and 5), and in actual operation, the lower jaw of a patient can be close to the chest of the patient.

The chest skin of current vein puncture model is made by rubber, in order to improve the sense of reality of exercise operation, the utility model provides a chest model 1 includes chest frame, chest pipe 11 and wraps up in the chest skin layer 12 in the chest pipe 11 outside. Wherein the chest frame simulates the ribs of a human body, the chest catheter 11 simulates the blood vessels positioned in the chest, and the chest skin simulates the skin of the human body. The chest frame is arranged inside the chest skin layer 12 and the chest catheter 11 is looped outside the chest frame. The chest skin layer 12 comprises three chest skin layers 12 which are sequentially distributed from inside to outside and are connected; the materials of the chest skin layers 12 are all silica gel, are close to the real skin tissue of a human body, are more close to the skin hand feeling during the placement and maintenance of the transfusion port, and are convenient for a practicer to better master the layering technical details of the bag.

The chest skin of the existing venipuncture model is wrapped on the periphery of a chest frame from front to back, and a practicer cannot perform the infusion port implantation operation and maintenance exercise. In order to improve the functional comprehensiveness of the venipuncture model, an infusion port catheter is arranged between the chest frame and the chest skin layer 12. The infusion port catheter is specifically arranged at the right chest, so that the venipuncture model has all functions of peripheral and central venipuncture catheter practice comprehensively.

More specifically, the large arm catheter 21 and the chest catheter 11 are both silicone catheters. When the venipuncture model is produced, a producer presets a silica gel catheter according to the human anatomy structure to simulate the human vein. The inner diameters of the large arm catheter 21 and the chest catheter 11 are both 3 mm-5 mm, and are similar to the thickness of a human blood vessel. The distance between the large arm catheter 21 and the large arm skin layer 22 is 10 mm-25 mm; the distance between the chest catheter 11 and the chest skin layer 12 is 10 mm-25 mm. The practitioner can practice vein puncture under the ultrasonic guidance to the vein puncture model.

Further, the large arm catheter 21 and/or the chest catheter 11 have a vascular interface, the end of which has an external thread. The blood vessel interface is a spiral interface, is convenient for being connected with the outside of external parts to simulate a treatment site. For example, the venipuncture model further comprises an infusion tube and an infusion bag, one end of the infusion tube is connected with the infusion bag, and the other end of the infusion tube is detachably connected with the blood vessel interface. Through transfer line and infusion bag, simulate real infusion scene, satisfy conventional exercise demand. As another example, the venipuncture model also includes a pump body removably connected to the vascular interface. Liquid is pumped into the silica gel conduit through the pump body, blood flow is simulated, and a practicer can conveniently practice the technique of puncturing.

The utility model discloses a working process does: the neck model 3 and the large arm model 2 are both rotationally connected to the chest model 1 to simulate human joints. The material of the chest skin layer 12 in the chest model 1 and the material of the large arm skin layer 22 in the large arm model 2 are both silica gel. And the chest skin layer 12 and the large arm skin layer 22 both comprise three silica gel layers, three layers of skin tissues of a human body are simulated, and the real touch feeling is improved. The transfusion port catheter is embedded at the inner side of the chest skin layer 12, so that a practicer can conveniently practice peripheral and central venipuncture catheters.

To sum up, the embodiment of the utility model provides a venipuncture model, its big arm model can rotate around chest model, simulates the scene that the puncture was accomplished to the rotatable patient arm of medical personnel under real scene, highly is close with the clinical operation sight of reality, is favorable to the practitioner to practise the puncture technique. The large arm skin layer comprises a subcutaneous tissue layer, a dermis layer and an epidermis layer which are sequentially arranged from inside to outside, so that real human skin is simulated, and the sense of reality of exercise operation is greatly improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. A venipuncture model is characterized by comprising a chest model and at least one large arm model which is rotatably connected with the chest model; the upper arm model comprises an upper arm skin layer; the upper arm skin layer comprises a subcutaneous tissue layer, a dermis layer and an epidermis layer which are sequentially distributed and connected from inside to outside.

2. The venipuncture model of claim 1, wherein said subcutaneous tissue layer has a thickness of 0.6mm to 0.8 mm; the thickness of the corium layer is 0.4 mm-0.6 mm; the thickness of the surface layer is 0.15 mm-0.25 mm.

3. The venipuncture model of claim 1 further comprising a neck model rotatably attached to said chest model.

4. The venipuncture model of any one of claims 1 to 3, wherein said chest model comprises a chest catheter and a chest skin layer wrapped around the outside of said chest catheter; the chest skin layer comprises three chest skin layers which are sequentially distributed from inside to outside and are connected; the material of each chest skin layer is silica gel.

5. The venipuncture model of claim 4, wherein said thoracic model further comprises a thoracic frame; the chest frame is arranged in the chest skin layer, and the chest catheter is encircled outside the chest frame; an infusion port catheter is arranged between the chest frame and the chest skin layer.

6. The venipuncture model of claim 4, wherein said large arm model further comprises a large arm catheter disposed inside said subcutaneous tissue layer;

the large arm catheter and the chest catheter are both silica gel catheters.

7. The venipuncture model of claim 6, wherein the inner diameters of said large arm catheter and said chest catheter are both 3mm to 5 mm;

the distance between the large arm catheter and the large arm skin layer is 10-25 mm;

the distance between the chest catheter and the chest skin layer is 10 mm-25 mm.

8. The venipuncture model of claim 6, wherein said large arm catheter and/or said chest catheter has a vascular interface with external threads on the end of said vascular interface.

9. The venipuncture model of claim 8, further comprising a fluid tube and an infusion bag, wherein one end of the fluid tube is connected to the infusion bag, and the other end of the fluid tube is detachably connected to the blood vessel port.

10. The venipuncture model of claim 8 further comprising a pump body removably connected to said vascular interface.

Images