CN220305899U - Venipuncture model - Google Patents

Abstract

The utility model relates to the technical field of medical teaching appliances, and provides a venipuncture model, which comprises the following components: the simulated subcutaneous tissue comprises a simulated skin layer, a simulated blood vessel and a simulated subcutaneous tissue layer which are detachably connected, wherein the simulated subcutaneous tissue layer is provided with a groove, the simulated blood vessel is arranged in the groove, and the simulated skin layer covers the simulated blood vessel and the outer side of the simulated subcutaneous tissue layer. When the venipuncture model is used for a set number of times, at least one of the simulated skin layer, the simulated blood vessel and the simulated subcutaneous tissue layer can be detached and replaced with a new one, so that the waste caused by directly discarding the venipuncture model is avoided, and the cost is saved. The venipuncture model has the advantages of simple structure, strong practicability, convenient replacement, convenient operation and long service life.

Description

Venipuncture model

Technical Field

The utility model relates to the technical field of medical teaching appliances, in particular to a venipuncture model.

Background

Venipuncture is one of the most basic medical techniques for medical staff, and when a school or a medical teaching unit performs venipuncture practice in clinical nursing teaching, in order to prevent the damage of a vein of a real person caused by venipuncture operation or the damage of a liquid medicine to the body of the real person, a scheme of canceling the real person practice is generally adopted, and only a model is used for practicing venipuncture, so that the requirement for simulation practice is increased.

In the related art, the model for practicing venipuncture and injection puncture has the following problems: (1) The matched equipment has complex structure, messy devices and large occupied space, and the back and forth transportation is time-consuming and labor-consuming; (2) The requirements on the place where the model is placed are high, the model can not be independently finished by one person in operation sometimes, the simulation performance is insufficient, the simulated skin and the simulated blood vessel are damaged and scrapped after being used for multiple needle insertion, and the service life is short; (3) the model has high price and high cost; (4) The problems that the liquid accumulated under the skin can not be discharged due to the failure of the model puncture or long-term repeated puncture, etc.

Disclosure of Invention

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides the venipuncture model which has the advantages of simple structure, strong practicability, easy replacement of the simulated skin layer and the simulated blood vessel and long service life.

The present utility model provides a venipuncture model comprising:

the simulated subcutaneous tissue comprises a simulated skin layer, a simulated blood vessel and a simulated subcutaneous tissue layer which are detachably connected, wherein the simulated subcutaneous tissue layer is provided with a groove, the simulated blood vessel is arranged in the groove, and the simulated skin layer covers the simulated blood vessel and the outer side of the simulated subcutaneous tissue layer.

According to the venipuncture model provided by the embodiment of the utility model, after the venipuncture model is used for a set number of times, at least one of the simulated skin layer, the simulated blood vessel and the simulated subcutaneous tissue layer can be disassembled and replaced with a new one, so that the waste caused by directly discarding the venipuncture model is avoided, and the cost is saved. Meanwhile, the problem that accumulated liquid under the skin cannot be discharged due to failure of model puncture or long-term repeated puncture, so that articles on a bed are polluted due to wetting in the training process can be avoided. The venipuncture model has the advantages of simple structure, strong practicability, convenient replacement and convenient operation.

According to one embodiment of the utility model, the inside of the simulated subcutaneous tissue layer is provided with a bonding layer which is detachably connected with the simulated skin layer.

According to one embodiment of the utility model, the first sticking buckle part is arranged on the outer side of the simulated skin layer, the second sticking buckle part is arranged on the outer side of the attaching layer, and the simulated skin layer and the attaching layer are mutually adhered and fixed through the adhesion of the first sticking buckle part and the second sticking buckle part.

According to one embodiment of the present utility model, a third fastening part is disposed on the inner side of the simulated skin layer, a fourth fastening part is disposed on the inner side of the attaching layer, and the simulated subcutaneous tissue and the simulated blood vessel are fixed between the simulated skin layer and the attaching layer by adhering the third fastening part and the fourth fastening part.

According to one embodiment of the utility model, the artificial body model further comprises an artificial body model, wherein the artificial subcutaneous tissue layer is integrally and fixedly connected with the artificial body model, or the artificial subcutaneous tissue layer is detachably connected with the artificial body model.

According to one embodiment of the utility model, the simulated vessel segments comprise a first simulated vessel segment and a second simulated vessel segment in communication, the first simulated vessel segment corresponding to the inside of the arm and the second simulated vessel segment corresponding to the outside of the arm.

According to one embodiment of the utility model, the simulated blood vessel is provided with a liquid inlet and a liquid outlet.

According to one embodiment of the present utility model, further comprising: the liquid storage device is detachably connected with the liquid inlet of the simulated blood vessel and is provided with a liquid adding port;

the liquid collecting device is detachably connected to the liquid outlet of the simulated blood vessel;

the liquid storage device is connected with the first flow speed adjusting device, and/or the liquid collecting device is connected with the second flow speed adjusting device.

According to one embodiment of the present utility model, further comprising: the laser lamp is connected to the simulated skin layer and is suitable for illuminating and checking the needle inserting condition of the arm model.

According to one embodiment of the utility model, the simulated subcutaneous tissue layer comprises a memory sponge and/or the simulated skin layer comprises a thermoplastic elastomer material and/or the simulated blood vessel comprises a latex material.

In addition to the technical problems, features of the structural solutions and advantages brought by the technical solutions with these technical features described above, other technical features of the present utility model and advantages brought by these technical features will be further described with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of a simulated skin layer, simulated blood vessels, simulated subcutaneous tissue layer and a conformable layer provided by an embodiment of the present utility model;

FIG. 2 is an assembly view of a simulated skin layer, simulated blood vessels, simulated subcutaneous tissue layer and a conformable layer provided by an embodiment of the present utility model.

FIG. 3 is a schematic view of a venipuncture model according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a simulated vascularity inside an arm of a venipuncture model such as an arm model according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a simulated vascularity of an arm outside of a venipuncture model, such as an arm model, according to an embodiment of the present utility model;

FIG. 6 is an expanded view of a sheet-worn venipuncture model provided in an embodiment of the present utility model;

fig. 7 is a schematic diagram of a venipuncture model according to an embodiment of the present utility model worn on a simulated body model.

Reference numerals:

110. simulating a skin layer; 111. a first sticking buckle part; 112. a third sticking buckle part;

120. simulating a blood vessel; 121. a first simulated vessel segment; 122. a second simulated vessel segment; 123. a liquid inlet; 124. a liquid outlet;

130. simulating a subcutaneous tissue layer;

140. a bonding layer; 141. a second sticking buckle part; 142. a fourth sticking buckle part;

150. a liquid storage device;

160. a liquid collecting device;

170. a first flow rate adjustment device;

180. a second flow rate adjustment device;

190. and simulating the body model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, and are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Referring to fig. 1 and 2, the present utility model provides a venipuncture model including: the simulated skin layer 110, the simulated blood vessel 120 and the simulated subcutaneous tissue layer 130 which are detachably connected are provided with grooves, the simulated blood vessel 120 is arranged in each groove, and the simulated skin layer 110 covers the simulated blood vessel 120 and the outer side of the simulated subcutaneous tissue layer 130.

According to the venipuncture model provided by the embodiment of the utility model, after the venipuncture model is used for a set number of times, at least one of the simulated skin layer 110, the simulated blood vessel 120 and the simulated subcutaneous tissue layer 130 can be detached and replaced with a new one, so that the waste caused by directly discarding the venipuncture model is avoided, and the cost is saved. Meanwhile, the problems of damage and loopholes of the simulated skin layer 110 and the simulated blood vessel 120 caused by puncture failure of the vein model or repeated puncture for a long time can be solved by replacing a new material, the phenomenon that articles on a bed are wetted in a training process is avoided, meanwhile, when puncture fails, the needle point is positioned outside the simulated blood vessel, liquid overflowed from the needle point (the liquid can be understood as liquid in an infusion bottle) can be remained at the inner side of the simulated skin, the liquid accumulated at the inner side of the simulated skin can not be discharged, the exercise of subsequent vein puncture can be influenced, the original old material can be replaced by replacing the new material, and the problem that the liquid accumulated at the inner side of the simulated skin can not be discharged is solved. The venipuncture model provided by the embodiment of the utility model has the advantages of simple structure, strong practicability, convenience in replacement, convenience in operation and long service life.

The simulated skin layer 110 comprises thermoplastic elastomer material, the simulated skin layer 110 can comprise inlet thermoplastic elastomer mixed glue material, the outer surface of the simulated skin is formed according to the actual skin state of a real person, and the simulated skin layer 110 with various types and specifications can be formed. Such as: the skin type of different age groups can be adopted, so that the skin of young people is compact and elastic; the skin of middle-aged people has fine lines, slight color spots and slight looseness; the skin of the elderly has poor elasticity, and is loose and aged. The touch feeling of the venipuncture model is real, lifelike, the appearance and the skin color form are attractive, the model is convenient to disinfect, clean, disassemble, assemble and replace, and the like, and the touch feeling of the venipuncture model is full and elastic.

The simulated blood vessel 120 comprises latex materials, the simulated blood vessel 120 can adopt latex materials with small needle holes after puncture with falling feel and needle drawing, the needle holes can be ignored, the problem of liquid leakage and seepage is avoided, and the use of a venipuncture model is ensured. The simulated blood vessel 120 may be manufactured in a variety of sizes, covering blood vessel features of various ages, such as: the blood vessels in the young period are full and elastic, and the blood vessels in the old period are thin in wall and low in elasticity. The specific specification of the simulated blood vessel 120 can be selected according to the actual requirements, and is not limited herein.

The simulated subcutaneous tissue layer 130 comprises a memory sponge, the memory sponge can simulate structures such as connective tissues, the simulated blood vessel 120 can be inlaid in the memory sponge, the simulated skin surface cannot be bulged, certain force is required during pressing, the real touch feeling of a human body can be simulated, and the artificial subcutaneous tissue layer is durable, not easy to damage, long in service life and not easy to collapse.

The venipuncture model of the present utility model includes various types and specifications, such as: the simulated skin layer 110 of a young person may be designed to be compact and elastic, and the simulated blood vessel 120 may be designed to be full and elastic; the simulated skin layer 110 of a middle aged person may be designed to have fine lines, slight stains, and slight laxity, and the simulated blood vessel 120 may be designed to be full and elastic; the simulated skin layer 110 of the elderly may be designed to have poor skin elasticity, loose aging, etc., and the simulated blood vessel 120 may be designed to have thin vessel walls and low elasticity. The venipuncture model can be designed according to the age group, and can also be designed according to the different body states of patients. Such as: the blood vessel of the obese patient is deeper, a simulated subcutaneous tissue layer 130 can be covered on the simulated blood vessel 120, and then a simulated skin layer 110 is covered on the simulated subcutaneous tissue layer 130, so that the skin state of the obese patient is simulated; the tissue space of the patient suffering from edema has excessive body fluid accumulation, the skin is thin, a cavity can be arranged in the simulated subcutaneous tissue layer 130, the fluid can be injected into the cavity, and meanwhile, the thin simulated skin layer 110 is arranged, so that the skin state of the patient suffering from edema is simulated. It can be appreciated that different types and specifications of venipuncture models can facilitate the operator to practice the puncture needle insertion operation on patients in different states, and are beneficial to random strain of the operator in difficult-to-predict, complex and changeable clinical work.

The venipuncture model of the utility model is provided with the simulated skin layer 110, the simulated blood vessel 120 and the simulated subcutaneous tissue layer 130 with different models so as to simulate clinical patients with different ages and different accurate states, and can help an operator to walk into the clinic, face different blood vessel states of different patients, have no confusion and fast adapt to clinical work.

Referring to fig. 7, the venipuncture model of the present utility model may include a simulated body model 190, and the simulated subcutaneous tissue layer 130 may be integrally and fixedly connected with the simulated body model 190, and at this time, the simulated skin layer 110 and the simulated blood vessel 120 are replaced to avoid puncture failure, so that the service life is greatly prolonged. Of course, the simulated subcutaneous tissue layer 130 may also be removably attached to the simulated body model 190, facilitating replacement of the simulated subcutaneous tissue layer 130.

The venipuncture model of the present utility model may be a one-piece wearable design structure, that is, as shown with reference to fig. 1 and 2, the inside of the simulated subcutaneous tissue layer 130 is provided with an adhesive layer 140, and the adhesive layer 140 is detachably connected with the simulated skin layer 110. It will be appreciated that the venipuncture model is a sheet-like structure and can be directly rolled on the dummy body model 190, and the lamination layer 140 can closely adhere to the dummy body model 190. Compared with the traditional venipuncture model which needs to be carried back and forth, has large volume, wastes time and labor when in use, the sheet-type venipuncture model can be directly worn on the simulation body model 190, so that the trouble of carrying back and forth is avoided, and the sheet-type venipuncture model is light in weight, small in occupied space and convenient to store.

The bonding layer 140 comprises non-woven fabrics, and the non-woven fabrics have the advantages of good strength, no toxicity, no harm, strong antibacterial property, light weight and low cost, and can meet the medical sanitary requirements.

Wherein, the venipuncture model is wearable on the simulated body model 190 (refer to fig. 7), when the simulated body model 190 is an arm model, not only can the exercise of intravenous infusion, blood drawing and indwelling needle operation be completed by pricking and loosening the tourniquet, but also the exercise of forearm vein net intravenous infusion, blood drawing and indwelling needle technology can be performed. Of course, the venipuncture model can also be worn on the arm of a real person, and the damage to the real person can be avoided when the venipuncture model is used for training.

The following examples illustrate a sheet-type wearable structure using a venipuncture model.

Referring to fig. 2, a first fastening part 111 is provided on the outer side of the skin-like layer 110, a second fastening part 141 is provided on the outer side of the adhesive layer 140, and the first fastening part 111 and the second fastening part 141 are adhered to each other to adhere the skin-like layer 110 and the adhesive layer 140 to each other and fix the skin-like layer at a predetermined position. It can be appreciated that, the simulation body models 190 with different specifications can be adopted by different medical institutions, different institutions and the like, the sizes of the simulation body models are also quite different, the simulation body models 190 with different specifications can be matched with the venipuncture model through the adhesion of the first fastening part 111 and the second fastening part 141, the first fastening part 111 and the second fastening part 141 can be provided with the magic tape, the magnetic fastener and the like, compared with the zipper design, the simulation body models have better inclusion, can be worn according to the thickness of the simulation body models 190, and have strong practicability, high inclusion, good suitability and wide application.

The inner side refers to the opposite side of the simulated skin layer 110 and the adhesive layer 140; the outer side refers to the opposite side of the simulated skin layer 110 and the adhesive layer 140.

Wherein the preset position may be understood as a position where the venipuncture model is stably fixed on the dummy body model 190. For a simulated body model 190 of the same specification, the preset position may be unchanged; the preset position may be varied for different specifications of the simulated body model 190.

Of course, the skin-like layer 110 and the adhesive layer 140 may be adhered to each other and fixed at a predetermined position, or may be adhered to each other to form a ring shape.

In addition, the sheet wearing type venipuncture model can also be directly worn on a human body, and a simulation body model can be omitted.

Referring to fig. 2, a third fastening part 112 is provided on the inner side of the simulated skin layer 110, a fourth fastening part 142 is provided on the inner side of the adhesive layer 140, and the third fastening part 112 and the fourth fastening part 142 are adhered to each other so that the simulated subcutaneous tissue layer 130 and the simulated blood vessel 120 are fixed between the simulated skin layer 110 and the adhesive layer 140. It will be appreciated that the long-term exercise may damage a portion of the material of the venipuncture model, and the simulated skin layer 110 and the adhesive layer 140 are adhered by the third fastening part 112 and the fourth fastening part 142, so that the simulated skin layer 110 and the adhesive layer 140 are detachably connected, and the damaged simulated skin layer 110, the simulated blood vessel 120, the simulated subcutaneous tissue layer 130 and other materials are replaced conveniently. The third fastening portion 112 and the fourth fastening portion 142 may be a hook and loop fastener, a magnetic fastener, or the like.

Wherein the simulated subcutaneous tissue layer is provided with grooves, which are not illustrated in fig. 2; in fig. 2, the first fastening part and the third fastening part are fixed to the simulated skin layer, the second fastening part and the fourth fastening part are fixed to the adhesive layer, and in order to facilitate indication of the relative positions of the inner side and the outer side, the first fastening part and the third fastening part, and the second fastening part and the fourth fastening part are indicated by an exploded state.

Here, regarding the partial material of the venipuncture model, which is damaged by the long-time exercise, it should be noted that the partial material may be at least one of the simulated skin layer 110, the simulated blood vessel 120, and the simulated subcutaneous tissue layer 130, that is, may be the simulated skin layer 110, the simulated blood vessel 120, the simulated subcutaneous tissue layer 130, may be the simulated skin layer 110 and the simulated blood vessel 120, may be the simulated skin layer 110 and the simulated subcutaneous tissue layer 130, or may be the simulated skin layer 110, the simulated blood vessel 120, and the simulated subcutaneous tissue layer 130. The venipuncture model provided by the embodiment of the utility model can be replaced according to actual conditions, and has the advantages of good practicability and low maintenance cost.

The simulated body model 190 may be an entire body model, a calf model, or an arm model, and the following embodiments will be described with reference to the case where the venipuncture model is applied to the arm model.

Referring to fig. 3 to 6, the simulated blood vessel 120 includes a first simulated blood vessel segment 121 and a second simulated blood vessel segment 122 that are communicated, the first simulated blood vessel segment 121 corresponding to the inside of the arm and the second simulated blood vessel segment 122 corresponding to the outside of the arm. The first simulated blood vessel segment 121 is arranged on the inner side of the arm, the second simulated blood vessel segment 122 is arranged on the outer side of the arm, the vein distribution of the arm of a human body can be simulated, the simulated blood vessels 120 with various specifications and covering various age groups can be manufactured, and an operator can conveniently identify and distinguish the vein blood vessels. Venipuncture and phlebotomy are the most commonly used treatment and care techniques in hospital clinics, and are also the operational skills that medical personnel must master, with successful venipuncture and venous catheterization being a necessary clinical risk management.

Fig. 5 and 6 do not directly observe the simulated blood vessel in actual use.

It should be noted that, the simulated blood vessel 120 may be a vein distribution of a human body, an artery distribution of a human body, or both a vein distribution and an artery distribution of a human body, which is convenient for an operator to identify a vein blood vessel and an artery blood vessel, and has a good simulation effect.

Referring to fig. 3 and 4, the simulated blood vessel 120 is provided with a liquid inlet 123 and a liquid outlet 124, and liquid is suitable for entering the simulated blood vessel 120 through the liquid inlet 123, and can flow out of the simulated blood vessel 120 through the liquid outlet 124 after flowing through the simulated blood vessel 120.

The distribution of the simulated blood vessels is shown in fig. 3, and the simulated blood vessels are not directly observed in actual use. Fig. 4 does not directly observe the simulated blood vessel in actual use.

When the simulated blood vessel 120 simulates the distribution of the venous blood vessel of the human body, referring to fig. 3 and 4, the liquid inlet 123 and the liquid outlet 124 may be both arranged at the elbow of the arm model, and then the simulated blood may be input into the simulated blood vessel 120, so as to simulate the unidirectional flow of the venous blood, so that the blood flow direction in the simulated blood vessel 120 is the same as the blood flow direction of the human body, further improving the simulation effect, having strong sense of reality of the venipuncture model, and being convenient for the operator to correctly distinguish the blood flow direction.

Referring to fig. 3, the venipuncture model further includes a liquid storage device 150, the liquid storage device 150 is detachably connected to the liquid inlet 123 of the simulated blood vessel 120, the liquid storage device 150 is provided with a liquid filling port, and the liquid storage device 150 can store the liquid conveyed to the simulated blood vessel 120, so that the conveying stability of the liquid is ensured.

Wherein, the liquid can enter the liquid storage device 150 through the liquid filling port, and the liquid can be simulated blood, so that the human blood can be simulated, and the simulation effect is optimized; the liquid can also be clear water, after the operation is finished, impurities are stored in the simulated blood vessel 120, the clear water can be continuously input into the liquid inlet 123, the clear water can flow into the simulated blood vessel 120, the simulated blood vessel 120 is flushed until the liquid flowing out from the liquid outlet 124 is clear water, namely, the cleaning is finished, and the cleaning of the simulated blood vessel 120 is ensured.

The venipuncture model also includes a fluid collection device 160, and fluid collection device 160 is removably coupled to fluid outlet 124 of simulated blood vessel 120. The liquid collecting device 160 can receive the liquid flowing out of the artificial blood vessel 120, and prevent the pollution of the environment caused by the overflow of the liquid.

Referring to fig. 3, the liquid storage device 150 may be disposed above the venipuncture model, where the liquid storage device 150 is higher than the liquid inlet, and infuses the simulated blood vessel 120 by using the gravity principle, that is, converting gravitational potential energy of the liquid into kinetic energy so as to make the liquid flow, thereby generating the effect of puncturing the blood by the needle, that is, after the venipuncture is successful, the operator can see the blood, and further improving the simulation effect. Compared with the function of realizing unidirectional blood circulation by using the electronic pump, it can be understood that the electronic pump has high cost, and the electronic pump is easy to fail, so that the use experience of an operator is reduced, the complete venipuncture model and matched parts are mailed to a factory during repair, and the repair is performed by professionals, so that the maintenance cost is high. The cost of the liquid storage device 150 and the liquid collecting device 160 is low, and the failure is not easy to happen. Meanwhile, the intravenous puncture model is convenient to clean, when the intravenous puncture model is used up and is expected to be placed for a long time, the simulated blood in the simulated blood vessel 120 is required to be washed cleanly, time and labor are consumed when the intravenous puncture model of the external electronic pump is used for cleaning, the time for washing can be greatly reduced through gravity transfusion, of course, the intravenous puncture model can be externally connected with a needle tube for manual washing, the time for washing the simulated blood vessel 120 can be further reduced, and the cleaning effect is optimized. Of course, a pump body may be provided between the liquid storage device 150 and the artificial blood vessel 120, and the infusion may be performed by the pump body.

The liquid storage device 150 is detachably connected to the liquid inlet 123 of the simulated blood vessel 120, and the liquid collection device 160 is detachably connected to the liquid outlet 124 of the simulated blood vessel 120. After the training operation of the vein operation model is finished, the simulated blood in the liquid storage device 150 can flow into the liquid collection device 160 through the simulated blood vessel 120, when the simulated blood in the liquid storage device 150 is emptied, a large amount of simulated blood is reserved in the liquid collection device 160, the liquid storage device 150 and the liquid collection device 160 can be detached and replaced when the liquid storage device is used next time, the liquid collection device 160 is connected with the liquid inlet 123, the liquid storage device 150 is connected with the liquid outlet 124, the liquid storage device 150 and the liquid collection device 160 are simple in structure, and the simulated blood can be detached and connected with the simulated blood vessel 120, so that the flow operation of the simulated blood is simple.

Referring to fig. 3, the liquid storage device 150 is connected to the first flow rate adjusting device 170, and the first flow rate adjusting device 170 can adjust the flow rate of the liquid flowing into the simulated blood vessel 120, and when the liquid is the simulated blood, can adjust the flow rate of the simulated blood, so as to simulate the flow rate of the human blood, further improve the simulation effect, improve the experience of the operator, and have good learning effect.

Referring to fig. 3, the liquid collecting device 160 is connected with a second flow rate adjusting device 180, where the second flow rate adjusting device 180 can adjust the flow rate of the liquid flowing out of the simulated blood vessel 120, and when the liquid is simulated blood, the flow rate of the simulated blood can be adjusted, so as to simulate the flow rate of human blood, further improve the simulation effect, improve the experience of an operator, and have good learning effect.

Of course, it is also possible that the liquid storage device 150 is connected with the first flow rate adjusting device 170, the liquid collecting device 160 is connected with the second flow rate adjusting device 180, and by setting the first flow rate adjusting device 170 and the second flow rate adjusting device 180 at the same time, the flow rate of the simulated blood can be optimized, so that the flow rate of the simulated blood is doubly ensured, and the simulation effect is optimized. When the simulated blood needs to be input, the first flow regulating device 170 and the second flow regulating device 180 can be simultaneously opened to enable the simulated blood to flow into the simulated blood vessel 120, and when the simulated blood appears in the liquid collecting device 160, the simulated blood can slowly flow by regulating the first flow regulating device 170 and the second flow regulating device 180 so as to simulate the flow speed of the human blood.

The venipuncture model also includes a laser light (not shown) coupled to simulated skin layer 110, the laser light adapted to illuminate to view the needle penetration of the venipuncture model. After the puncture is completed, an operator can turn on the laser lamp to irradiate and check the puncture condition, and can clearly observe the angle of the needle insertion and the depth of the needle insertion, so that the puncture action is standardized, the success rate of the puncture can be improved, the learning efficiency is high, and the training is convenient.

The laser lamp can be fixedly connected to the simulated skin layer 110, and also can be detachably connected to the simulated skin layer 110, and the laser lamp can be detached from the venipuncture model, so that the laser lamp can irradiate the simulated skin layer 110 from all directions, and an operator can observe the needle insertion condition from any angle conveniently.

The laser lamp can be connected with a power supply and is powered by the power supply; the laser lamp may also be provided with a battery through which power is supplied.

It should be noted that, when the puncture needle is inserted without blood return, the puncture failure can be known, and the blood return after the needle insertion has three states: the vein puncture model provided by the embodiment of the utility model further comprises a laser lamp, wherein the angle and the depth of needle insertion can be observed cleanly by using the laser lamp after the puncture is finished, and the puncture action can be regulated in a directed way.

Taking a venipuncture model with a sheet-type wearable structure as an example, the specific practical operation steps of venipuncture are described:

(1) Wearing the venipuncture model on the simulated body model 190 or a real person;

(2) Adding simulated blood into the liquid storage device 150, connecting the liquid storage device 150 with the liquid inlet 123 of the simulated blood vessel 120, and connecting the liquid collecting device 160 with the liquid outlet 124 of the simulated blood vessel 120;

(3) The liquid storage device 150 may be provided above the venipuncture model, and the liquid storage device 150 and the infusion bag (bottle) may be suspended above the venipuncture model.

(4) The upper and lower first flow regulating devices 170 and the second flow regulating device 180 are opened to allow the simulated blood to flow into the simulated blood vessel 120. When the simulated blood appears in the liquid collecting device 160 for collecting the simulated blood, the first flow regulating device 170 and the second flow regulating device 180 are regulated to enable the simulated blood to slowly flow, so that the flow speed of the blood of a human body is simulated;

(5) Performing a venipuncture procedure: selecting a puncture part; tying a tourniquet; disinfecting skin, optionally with iodophor; blood return can be seen after successful venipuncture, and 'three looseness' can be demonstrated, namely, the tourniquet is loosened, the liquid flow speed regulator of the infusion bag (bottle) is loosened, and the patient (by an operator) is instructed to loosen the fist, so that the operation is the same as that of a real person, and the sense of reality is strong; and (3) fixing the needle head, adjusting the dripping speed and completing venipuncture until the solution in the infusion bag (bottle) is unobstructed.

(6) After the puncture is completed, the needle is pulled out, the first flow speed adjusting device 170 and the second flow speed adjusting device 180 are closed, and the vitamin C tablets can be used for soaking water to clean the simulated skin surface, so that the problem of staining of the iodophor can be solved;

(7) Flushing the simulated blood vessel 120: and (3) disassembling the liquid collecting device 160, wherein a waste water receiving device can be arranged at the liquid outlet 124 of the simulated blood vessel 120, clear water is continuously filled at the liquid adding port of the liquid storing device 150, and the first flow speed adjusting device 170 and the second flow speed adjusting device 180 are opened until clear water flows out of the liquid outlet 124 of the simulated blood vessel 120, namely, the cleaning is finished.

The vein puncture model provided by the embodiment of the utility model is provided with a unidirectional vein simulation blood vessel 120 in the simulation skin; because the simulated blood in the vein simulated blood vessel 120 flows in a single direction, the flow direction of the simulated blood is the same as that of the human body, the simulation effect is good, and an operator can conveniently and correctly distinguish the blood flow direction so as to distinguish vein or artery blood vessels; after successful venipuncture, blood return can be demonstrated, namely, the tourniquet, the loose regulator and the loose fist are loosened, and after solution drip is unobstructed, the dripping speed is fixed and regulated, and the device is as same as the operation on a human body, so that the sense of realism is strong; meanwhile, the first sticking buckle part 111 and the second sticking buckle part 141 are further arranged at the wrist, fingers can be accurately matched when the simulated skin is replaced for the venipuncture model, and the device has the advantages of being simple in structure, strong in practicability, convenient to replace, convenient to operate and the like, and the problems that accumulated liquid under the skin cannot be discharged due to puncture failure of the venipuncture model or long-term repeated puncture, and objects on a bed are polluted due to wetting in a training process can be avoided.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (8)

1. A venipuncture model comprising:

the simulated subcutaneous tissue layer is provided with a groove, the simulated blood vessel is arranged in the groove, and the simulated skin layer covers the simulated blood vessel and the outer side of the simulated subcutaneous tissue layer;

an attaching layer is arranged on the inner side of the simulated subcutaneous tissue layer, and the attaching layer is detachably connected with the simulated skin layer;

the simulation skin layer is characterized in that a first sticking buckle part is arranged on the outer side of the simulation skin layer, a second sticking buckle part is arranged on the outer side of the attaching layer, and the simulation skin layer and the attaching layer are mutually adhered and fixed through the adhesion of the first sticking buckle part and the second sticking buckle part.

2. The model of claim 1, wherein a third fastening portion is provided on the inside of the simulated skin layer, and a fourth fastening portion is provided on the inside of the adhesive layer, and the simulated subcutaneous tissue layer and the simulated blood vessel are fixed between the simulated skin layer and the adhesive layer by the third fastening portion and the fourth fastening portion being adhered.

3. The venipuncture model as claimed in claim 1, further comprising a simulated body model to which the simulated subcutaneous tissue layer is integrally fixedly connected or to which the simulated subcutaneous tissue layer is detachably connected.

4. The model of claim 1, wherein the simulated blood vessel comprises a first simulated blood vessel segment and a second simulated blood vessel segment in communication, the first simulated blood vessel segment corresponding to an inside of an arm and the second simulated blood vessel segment corresponding to an outside of the arm.

5. The model of claim 1, wherein the simulated blood vessel is provided with a fluid inlet and a fluid outlet.

6. The model of venipuncture as claimed in claim 5, further comprising:

the liquid storage device is detachably connected with the liquid inlet of the simulated blood vessel and is provided with a liquid adding port;

the liquid collecting device is detachably connected to the liquid outlet of the simulated blood vessel;

the liquid storage device is connected with the first flow speed adjusting device, and/or the liquid collecting device is connected with the second flow speed adjusting device.

7. The model of any one of claims 1 to 6, further comprising a laser light attached to the simulated skin layer, the laser light adapted to illuminate to view the venipuncture model needle penetration.

8. The venipuncture model as claimed in any of claims 1-6, wherein the simulated subcutaneous tissue layer comprises a memory sponge and/or the simulated skin layer comprises a thermoplastic elastomer material and/or the simulated blood vessel comprises a latex material.