A spliced abdominal puncture model

Abstract

The application discloses a spliced abdominal puncture model, and particularly relates to the field of medical auxiliary devices, which comprises a simulation trunk model and a detachable spliced simulation skin, wherein the detachable spliced simulation skin is provided with a first mark point, and the lower abdomen of the simulation trunk model is provided with a second mark point. The detachable spliced simulation skin and the modified auxiliary assembly are matched, the modified auxiliary assembly is put into the installation groove according to the requirement in the actual practice process, the external shape of the detachable spliced simulation skin is influenced, the fat layer under the abdomen is simulated by the multi-layered pad plate, the flexible deformation pad is lifted and deformed into the shape of the protruding "small belly", and whether the selection of the anesthesia point is correct or not is determined according to the liquid storage cavity position of the collected "anesthesia injection", so that the single standard body shape puncture training of the traditional puncture model is avoided, the determination of the puncture point of the patient with different body shapes is adapted by the exerciser, and the operation on the patients with different body shapes in the subsequent actual operation is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary equipment, more particularly, the present application relates to a spliced abdominal puncture model. BACKGROUND

[0002] Abdominal puncture is an operation process of puncturing the abdominal cavity of a patient with fluid accumulation in the abdominal cavity for diagnosis and treatment. In the clinical treatment process, abdominal puncture operation is applied a lot, but the selection of puncture point and the operation process have certain difficulty, and it is difficult to accurately operate the patient during the learning process without practice. Therefore, it is necessary to practice puncture before medical personnel perform operation, and the essential human model for practicing puncture in the prior art is used.

[0003] Although the human model in the prior art has achieved a realistic shape, thereby ensuring the accurate needle position during practice and providing the practitioner with a real puncture simulation effect, the existing simulation torso model is a standard model, but the height, weight and fatness of actual patients are not fixed, and the puncture practice using only the standard model cannot guarantee the determination of the puncture point of patients with different body types, thereby causing the "distortion" of puncture practice and affecting the exercise effect of the puncture ability of medical personnel. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiment of the present application provides a spliced abdominal puncture model, and the technical problem to be solved by the present application is how to train medical personnel to perform abdominal puncture on patients with different body types, so that the medical personnel trained in actual treatment ability.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a spliced abdominal puncture model, comprising a simulation torso model and a detachable spliced simulation skin, the bottom leg root of the simulation torso model is provided as a horizontal placement surface, the first identification point is provided on the detachable spliced simulation skin, the second identification point is provided at the lower abdomen position of the simulation torso model, the first identification point is provided as the navel identification point of the simulation torso model, and is used for puncture point comparison and positioning; the second identification point is provided as the bladder external positioning identification point of the simulation torso model, and is used for displaying error puncture behavior prompt;

[0006] The hip and back of the simulation torso model are both provided as a plane, and the hip and back of the simulation torso model are both provided with anti-skid pads at the plane position, the operation cavity is provided at the waist of the simulation torso model, and the puncture direction detection assembly is provided in the operation cavity;

[0007] The simulation torso model comprises a model body, an installation slot is arranged at an abdominal cavity position of the model body, and a detachable spliced simulation skin is installed in the installation slot; an auxiliary component for changing the shape of the outer surface of the detachable spliced simulation skin is arranged in the installation slot, so as to simulate the abdominal state of patients with different body types; a receiving cavity is arranged at a pelvic cavity position of the simulation torso model, the receiving cavity is communicated with the installation slot at the top, and a bladder simulation component is arranged in the receiving cavity; and a display liquid is arranged in the bladder simulation component.

[0008] In a preferred embodiment, an extrusion plate is arranged at a position of the inner wall of the receiving cavity, and a telescopic spring is arranged between the extrusion plate and the inner wall of the receiving cavity.

[0009] The second identification point comprises an identification slot, the identification slot is communicated with the receiving cavity through the simulation torso model, and a display pad is arranged in the identification slot, the display pad is made of water-absorbing materials such as cotton or sponge.

[0010] In a preferred embodiment, the bladder simulation component comprises a flexible air bag, the display liquid is arranged in the inner cavity of the flexible air bag, and an inlet one-way valve is arranged at one side of the flexible air bag, for supplementing the display liquid in the inner cavity of the flexible air bag.

[0011] The display liquid is physiological saline mixed with bright pigments.

[0012] In a preferred embodiment, a fixing hole is arranged at the connection between the installation slot and the detachable spliced simulation skin.

[0013] The detachable spliced simulation skin comprises a flexible deformation pad and a shaping frame, the shaping frame is fixedly connected with the edge of the flexible deformation pad, a plurality of fixing protrusions are fixedly arranged at the bottom of the shaping frame, and the fixing protrusions are inserted into the fixing hole.

[0014] In a preferred embodiment, the auxiliary component for changing the shape comprises a plurality of disc-shaped pad plates with increasing sizes, the pad plate comprises a disc pad body, and a plurality of liquid storage cavities are arranged in the disc pad body in a circular array, the height of the liquid storage cavities is less than the thickness of the disc pad body, and the disc pad body is made of light-transmitting rubber material.

[0015] In a preferred embodiment, the puncture direction detection component comprises a plurality of layers of indication pads with different colors and an identification ruler, the plurality of layers of indication pads are arranged in an integrated manner, and each layer of indication pad is made of flexible light-transmitting material.

[0016] An adjusting slot is arranged at the connection between the indication pad and the identification ruler, for adjusting the relative position between the identification ruler and the indication pad.

[0017] The identification ruler comprises a ruler body, and identification lines are arranged on the ruler body.

[0018] In a preferred embodiment, the anti-skid pad comprises a main plate, a plurality of anti-skid protrusions are uniformly fixed on one side of the main plate, and the smooth surface of the main plate without the anti-skid protrusions is fixedly connected with the buttock and back plane position of the model main body.

[0019] In a preferred embodiment, the cross-sectional shape of the extrusion plate is set as a circular arc shape, and the maximum elastic force of the telescopic spring is less than the stress intensity of the flexible air bag.

[0020] Technical effects and advantages of the present application:

[0021] 1. According to the present application, the modified auxiliary assembly is placed in the installation slot according to the needs during the actual practice process, so as to affect the external shape of the detachable spliced simulation leather, the multi-layered pad plate simulates the fat layer under the abdomen, the flexible deformation pad is lifted and deformed into a raised "small belly" shape, and whether the selection of the anesthesia point is correct or not is determined according to the liquid storage cavity position of the "anesthetic injection liquid", so as to avoid the single standard body puncture training of the traditional puncture model, and make the practitioner adapt to the determination of the puncture point of patients with different body shapes, thereby meeting the operation of patients with different body shapes in the subsequent operation.

[0022] 2. According to the present application, the relative position of the bladder and the abdominal cavity in the model is simulated by setting the bladder simulation assembly, different amounts of display liquid can be filled into the flexible air bag through the inlet one-way valve, the condition of the increased volume of the bladder caused by urine retention is simulated, and the coloring display of the second identification point during the puncture simulation practice can alert the practitioner to prompt the patient to urinate before the operation and change the selection position of the puncture point of the patient who has not urinated, so as to train the medical personnel to accurately determine the puncture point according to the different conditions of the patients.

[0023] 3. According to the present application, the puncture direction detection assembly is set, the puncture operation is performed through the detachable spliced simulation leather, the depth of the needle tip of the puncture needle penetrating into the indication pad is observed through the operation cavity, whether the puncture depth meets the puncture requirement is determined, the position of the identification ruler in the adjusting groove is adjusted, so that the relative position of the identification line on the ruler body and the puncture needle penetrating into the indication pad coincides, so as to verify whether the puncture angle of the puncture needle meets the requirement of "slowly penetrating into the abdominal cavity at a vertical angle" required by the puncture operation, so as to intuitively identify the error operation of the practitioner after the operation, help the practitioner to understand the error operation, and ensure the exercise effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0025] Figure 2 It is a schematic diagram of the overall disassembled state structure of the present application.

[0026] Figure 3 It is a schematic view of the side view cut structure of the present application.

[0027] Figure 4 It is a schematic view of the structure of the present application Figure 3 It is an enlarged view of the structure of A part in the present application.

[0028] Figure 5 It is a schematic view of the structure of the bladder simulation assembly 16 of the present application.

[0029] Figure 6 It is a schematic view of the structure of the modified auxiliary assembly of the present application.

[0030] Figure 7 It is a schematic view of the cross section structure of the cushion plate of the present application.

[0031] Figure 8 It is a schematic view of the structure of the puncture direction detection assembly of the present application.

[0032] Figure 9 It is a schematic view of the structure of the identification ruler of the present application.

[0033] Figure 10 It is a schematic view of the detachable spliced simulation skin of the present application.

[0034] Figure 11 It is a schematic view of the anti-skid pad structure of the present application.

[0035] The reference signs are: 1 simulation torso model, 2 detachable spliced simulation skin, 3 first identification point, 4 second identification point, 5 anti-skid pad, 6 operation cavity, 7 puncture direction detection assembly;

[0036] 11 model main body, 12 installation groove, 13 modified auxiliary assembly, 14 fixed hole, 15 storage cavity, 16 bladder simulation assembly, 17 display liquid, 18 extrusion plate, 19 extension spring;

[0037] 131 round pad main body, 132 liquid storage cavity;

[0038] 161 flexible air bag, 162 inlet one-way valve;

[0039] 21 flexible deformation pad, 22 shaping frame, 23 fixed protrusion tooth;

[0040] 41 identification groove, 42 display pad;

[0041] 51 main plate, 52 anti-skid protrusion;

[0042] 71 indication pad, 72 identification ruler, 73 adjustment groove;

[0043] 721 ruler body, 722 identification line. DETAILED DESCRIPTION

[0044] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0045] Embodiment 1

[0046] Please refer to Figure 1 The present application provides a spliced abdominal puncture model, which comprises a simulation torso model 1 and a detachable spliced simulation skin 2. The bottom of the simulation torso model 1 is provided with a horizontal placement surface at the leg root. The detachable spliced simulation skin 2 is provided with a first identification point 3, which is set as the navel identification point of the simulation torso model 1 and is used for puncture point comparison and positioning.

[0047] Specifically, when performing abdominal puncture, the puncture point needs to be determined according to the patient's body position. The specific puncture point determination method is as follows:

[0048] ① Abdominal puncture point in supine position: intersection point of the middle and outer 1 / 3 of the line connecting the navel and the left anterior superior iliac spine of the left lower abdomen;

[0049] ② Abdominal puncture point in supine position: 1 cm above the midpoint of the line connecting the navel and the pubic symphysis, and 1.5 cm to the left or right;

[0050] ③ Abdominal puncture point in lateral position: intersection of the horizontal line of the navel and the extension of the anterior axillary line or the midaxillary line;

[0051] Therefore, when puncturing in any position, the navel position needs to be determined, which is used as the "reference point" for determining the puncture point. Therefore, the first identification point 3 is set on the simulation model according to the human body proportion, which can ensure the smooth progress of the puncture work.

[0052] Please refer to Figure 2 The simulation torso model 1 comprises a model main body 11. An installation groove 12 is arranged at the abdominal cavity position of the model main body 11, which is used for installing the detachable spliced simulation skin 2. A modified auxiliary assembly 13 is arranged inside the installation groove 12, which is used for changing the external shape of the detachable spliced simulation skin 2, simulating the abdominal state of patients with different body types. A fixing hole 14 is arranged at the connection between the installation groove 12 and the detachable spliced simulation skin 2.

[0053] Please refer to Figure 10 The detachable spliced simulation skin 2 comprises a flexible deformation pad 21 and a shaping frame 22. The shaping frame 22 is fixedly connected with the edge of the flexible deformation pad 21. A plurality of fixing protrusions 23 are fixedly arranged at the bottom of the shaping frame 22, and the fixing protrusions 23 are inserted into the fixing hole 14.

[0054] The detachable splicing between the simulation torso model 1 and the detachable splicing simulation skin 2 is realized by the insertion of the fixed protruding teeth 23 and the fixed holes 14. On the one hand, only the detachable splicing simulation skin 2 can be replaced, so that the model can be used for a long time. A large number of puncture holes left on the detachable splicing simulation skin 2 can cause the loss of the “hand feeling” of puncture behavior or provide an indication of the “accurate puncture point” to the practitioner, so that the practitioner cannot truly and effectively practice the abdominal puncture work. On the other hand, the detachable splicing simulation skin 2 can be placed in the installation slot 12 according to the needs during actual practice, so as to affect the external shape of the detachable splicing simulation skin 2, simulate the abdominal state of a patient with a large belly, avoid the single standard body puncture training of the traditional puncture model, and enable the practitioner to adapt to the determination of the puncture point of patients with different body shapes, thereby meeting the operation of patients with different body shapes in subsequent practice.

[0055] Please refer to Figures 6-7 The modified auxiliary assembly 13 is composed of multiple groups of disc-shaped pads with increasing sizes. The pad includes a circular pad body 131 and multiple liquid storage cavities 132 arranged in a circular array inside the circular pad body 131. The height of the liquid storage cavity 132 is less than the thickness of the circular pad body 131, and the circular pad body 131 is made of light-transmitting rubber material.

[0056] In this embodiment, multiple groups of pads are placed in the installation slot 12 according to the actual patient abdominal shape to be simulated. The pads are placed in a way that the outer diameter of the pads decreases from top to bottom, so that the small-size pads at the top protrude from the installation slot 12, and the protruding pads do not affect the normal insertion of the fixed protruding teeth 23 and the fixed holes 14, ensuring the normal splicing between the simulation torso model 1 and the detachable splicing simulation skin 2. During this period, the protruding pads interfere with the flexible deformation pad 21 according to its stepped arrangement, so that the flexible deformation pad 21 is lifted and deformed into a “small belly” shape, thereby simulating the abdominal shape of a “fat person”. In this process, the user can simulate the abdominal shape of a “fat person” of different sizes according to the number of pads selected, and the setting of the shaping frame 22 not only facilitates the corresponding position of the fixed protruding teeth 23 and the fixed holes 14, but also avoids the interference of the position of the pads with the deformation of the flexible deformation pad 21, which affects the tightness of the contact position between the simulation torso model 1 and the detachable splicing simulation skin 2.

[0057] On this basis, the skin is routinely disinfected 2-3 times with a determined puncture point as the center during the abdominal puncture operation, and then local infiltration anesthesia is performed from the skin to the parietal peritoneum with anesthetic injection solution. The setting of the liquid storage cavity 132 can collect the "anesthetic injection solution" during the simulation of anesthetic injection, so as to open the detachable spliced simulation skin 2 after the operation, and determine whether the selection of the anesthetic point is correct according to the position of the liquid storage cavity 132 collecting the "anesthetic injection solution". At this time, the "anesthetic injection solution" can be selected as a test solution with bright color, so as to more conveniently enable the user to find the injection point of the anesthetic operation. This work can help the user to practice accurate anesthetic work under the interference of different thicknesses of "fat layers". The flexible deformation pad 21 is set as a non-light-transmitting material to simulate the performance of real anesthetic injection work.

[0058] Embodiment 2:

[0059] Based on Embodiment 1, please refer to Figures 2-5 , this embodiment further limits the simulation torso model 1 as follows:

[0060] Please refer to Figure 2 , a second identification point 4 is arranged at the lower abdominal position of the simulation torso model 1. The second identification point 4 is set as an external positioning identification point of the bladder of the simulation torso model 1, and is used to display an error puncture behavior prompt. Please refer to Figure 4 , the second identification point 4 includes an identification groove 41, which is connected in communication with the receiving cavity 15 through the simulation torso model 1. A display pad 42 is arranged inside the identification groove 41. The display pad 42 is set as a water-absorbing material such as cotton or sponge material;

[0061] Please refer to Figures 3-4 , the pelvic cavity position of the simulation torso model 1 is provided with a receiving cavity 15. The top of the receiving cavity 15 is connected in communication with the mounting groove 12. A bladder simulation assembly 16 is arranged inside the receiving cavity 15. The bladder simulation assembly 16 is provided with a display liquid 17. An extrusion plate 18 is arranged at the inner wall position of the receiving cavity 15. A telescopic spring 19 is arranged between the extrusion plate 18 and the inner wall of the receiving cavity 15. The cross-sectional shape of the extrusion plate 18 is set as a circular arc shape. The maximum elastic force of the telescopic spring 19 is less than the stress intensity of the flexible air bag 161.

[0062] Please refer to Figures 4-5 , the bladder simulation assembly 16 includes a flexible air bag 161. The display liquid 17 is arranged in the inner cavity of the flexible air bag 161. An inlet one-way valve 162 is arranged at one side of the flexible air bag 161, which is used to supplement the display liquid 17 in the inner cavity of the flexible air bag 161.

[0063] The display liquid 17 is set as physiological saline mixed with bright pigments;

[0064] In the present embodiment, when the model is prepared before the puncture work is performed, the length of the retractable spring 19 is first contracted by pressing the extrusion plate 18, and then the bladder simulation assembly 16 is inserted into the receiving cavity 15 to simulate the relative position of the bladder and the abdominal cavity in the model, and the display liquid 17 simulates urine. Before the puncture operation is performed, the patient is required to urinate, so as to reduce the volume of the bladder and avoid the situation that the puncture needle pierces the bladder due to improper puncture operation. However, in the actual treatment process, the patient cannot urinate smoothly due to preoperative tension, or the medical personnel forget to remind the patient to urinate, so that the volume of the bladder increases during the actual puncture operation, which interferes with the direction of the needle or the selection of the puncture point during the puncture operation.

[0065] In the present embodiment, the bladder simulation assembly 16 is used as a simulated bladder. Before the bladder simulation assembly 16 is placed in the receiving cavity 15, the user can fill different amounts of display liquid 17 into the flexible air bag 161 through the inlet one-way valve 162, so as to change the apparent volume of the flexible air bag 161, simulate the situation that the volume of the bladder increases due to urine retention, and simulate the situation that the volume of the bladder increases due to urine retention. If the volume of the bladder simulation assembly 16 is too large during the puncture operation, the puncture needle will be pierced, and the display liquid 17 will seep into the receiving cavity 15. The display pad 42 absorbs the display liquid 17 mixed with bright-colored physiological saline (if the display pad 42 has absorbed the display liquid 17 during a single operation, the display pad 42 can be replaced separately after the display liquid 17 remaining in the receiving cavity 15 is cleaned at the end of the operation), which is colored on the outside of the simulated torso model 1, prompting the user that the puncture operation is failed and the bladder is pierced. The setting of the extrusion plate 18 and the retractable spring 19 provides a certain extrusion force to the bladder simulation assembly 16, so that the display liquid 17 can be smoothly discharged from the puncture hole position of the flexible air bag 161 when the flexible air bag 161 is pierced. The coloring display of the second identification point 4 during the puncture simulation practice can alert the practitioner to remind the patient to urinate before the operation and to change the selection position of the puncture point for the patient who does not urinate, so as to train the medical personnel to accurately determine the puncture point according to different patient conditions.

[0066] Embodiment 3:

[0067] Based on Embodiment 1, please refer to Figure 3 and Figures 8-11 The present embodiment further limits the simulated torso model 1 as follows:

[0068] Please refer to Figure 3 and Figure 11The hip and back of the simulation torso model 1 are flat, and the flat positions of the hip and back of the simulation torso model 1 are provided with anti-skid pads 5, the anti-skid pads 5 include main plates 51, a plurality of anti-skid convex strips 52 are uniformly and fixedly arranged on one side of the main plates 51, and the smooth surface of the main plates 51 without the anti-skid convex strips 52 is fixedly connected with the flat positions of the hip and back of the model main body 11;

[0069] Referring to Figure 3 and Figures 8-9 The operation cavity 6 is arranged at the waist and back of the simulation torso model 1, and the operation cavity 6 is internally provided with a puncture direction detection assembly 7; the puncture direction detection assembly 7 includes a plurality of layers of indication pads 71 with different colors and a marking ruler 72, wherein the plurality of layers of indication pads 71 are integrally arranged, and each layer of indication pad 71 is made of a flexible light-transmitting material; an adjusting groove 73 is arranged at the connection position of the indication pad 71 and the marking ruler 72, for adjusting the relative position between the marking ruler 72 and the indication pad 71; the marking ruler 72 includes a ruler body 721, and the ruler body 721 is provided with a marking line 722;

[0070] Specifically, the operation cavity 6 is arranged at the waist and back of the simulation torso model 1, so that the self-weight of the model is reduced, thereby facilitating the user to carry the model; in addition, the hip and back of the model main body 11 are flat, so that the stability of the simulation torso model 1 when placed on a plane is ensured, and the simulation torso model 1 in the technical solution is prevented from shaking due to disturbance when the self-weight is reduced by the operation cavity 6, so that the position stability of the model during operation is ensured; and the anti-skid pads 5 are arranged, so that the friction between the main plates 51 and the model placing surface is increased by the anti-skid convex strips 52, and the stability of the simulation torso model 1 during the abdominal cavity puncture practice is further ensured;

[0071] In addition, in the existing puncture operation, the rubber tube end of the puncture needle is clamped with a hemostatic clamp and placed in a sterilization tray, the left hand fixes the skin at the puncture site, the right hand holds the puncture needle, the needle is inserted into the skin at the anesthetized site, and then the needle is inserted into the subcutaneous tissue at an angle of 45-60 degrees, and then the needle is slowly inserted into the abdominal cavity at a vertical angle, at this time the resistance of the needle tip disappears, and in the puncture practice of the model, the puncture operation is performed through the detachable spliced simulation skin 2, the needle tip of the puncture needle punctures to the position of the puncture direction detection assembly 7, the puncture direction detection assembly 7 in the model is the traditional puncture model abdominal fluid collection point, the accuracy of the puncture position is practiced, the operation practice of the abdominal fluid is not separated, after the puncture operation is completed, the teacher can vertically place the simulation trunk model 1, observe the depth of the needle tip of the puncture needle inserted into the indicating pad 71 through the rear operation cavity 6, and determine whether the puncture depth meets the puncture requirement, in addition, the teacher can also adjust the position of the identification ruler 72 in the adjusting groove 73, so that the identification line 722 on the ruler body 721 coincides with the relative position of the puncture needle inserted into the indicating pad 71, so as to verify whether the puncture angle of the puncture needle meets the requirement of “inserting into the abdominal cavity at a vertical angle” required by the puncture operation, so as to intuitively identify the error operation of the practitioner, help the practitioner understand the error operation, and ensure the exercise effect.

[0072] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms “installation”, “connection”, “connection” should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, “up”, “down”, “left”, “right” and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0073] Secondly: the present application discloses the structure involved in the embodiment of the present application, and other structures can be referred to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0074] Finally: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spliced ​​abdominal puncture model, characterized in that: The simulation torso model (1) is provided with a horizontal placement surface at the bottom of the leg root, and the detachable spliced simulation skin (2) is provided with a first identification point (3), the lower abdomen of the simulation torso model (1) is provided with a second identification point (4), the first identification point (3) is set as the navel identification point of the simulation torso model (1) and is used as a puncture point comparison positioning, and the second identification point (4) is set as the bladder external alignment identification point of the simulation torso model (1) and is used for displaying an incorrect puncture behavior prompt. The buttocks and back of the simulation torso model (1) are provided in a plane, and the buttocks and back of the simulation torso model (1) are provided with anti-skid pads (5) at the plane positions, the simulation torso model (1) is provided with an operation cavity (6) at the waist and back, and the operation cavity (6) is provided with a puncture direction detection assembly (7) inside. The simulation torso model (1) comprises a model main body (11), the model main body (11) is provided with an installation groove (12) at the abdominal cavity position, is used for installing the detachable spliced simulation skin (2), and is provided with a modified auxiliary assembly (13) inside the installation groove (12) and is used for changing the external shape of the detachable spliced simulation skin (2), simulating the abdominal state of patients with different body types, the simulation torso model (1) is provided with a storage cavity (15) at the pelvic cavity position, the top of the storage cavity (15) is communicated with the installation groove (12), and the storage cavity (15) is provided with a bladder simulation assembly (16) inside. The inner wall position of the storage cavity (15) is provided with an extrusion plate (18), the extrusion plate (18) and the inner wall of the storage cavity (15) are provided with a telescopic spring (19) therebetween, the second identification point (4) comprises an identification groove (41), the identification groove (41) penetrates through the simulation torso model (1) and is communicated with the storage cavity (15), and the identification groove (41) is provided with a display pad (42) inside. The modified auxiliary assembly (13) is set as a plurality of disc-shaped pad plates with increasing sizes, the pad plate comprises a circular pad main body (131) and a plurality of liquid storage cavities (132) which are uniformly distributed in a circular array inside the circular pad main body (131), wherein the height of the liquid storage cavity (132) is less than the thickness of the circular pad main body (131), and the circular pad main body (131) is made of a light-transmitting rubber material.

2. The model according to claim 1, wherein: The bladder simulation assembly (16) comprises a flexible air bag (161), the display liquid (17) is arranged in the inner cavity of the flexible air bag (161), and the flexible air bag (161) is provided with an inlet one-way valve (162) on one side, for supplementing the display liquid (17) in the inner cavity of the flexible air bag (161). The display liquid (17) is set as physiological saline mixed with bright pigments.

3. The model according to claim 1, wherein: The installation groove (12) is provided with a fixing hole (14) at the connection position with the detachable spliced simulation skin (2). The detachable spliced artificial leather (2) comprises a flexible deformation pad (21) and a shaping frame (22), the shaping frame (22) is fixedly connected with the flexible deformation pad (21) at the edge, and a plurality of fixed protrusions (23) are fixedly arranged at the bottom of the shaping frame (22), and the fixed protrusions (23) are inserted into the fixed holes (14).

4. The model according to claim 1, wherein: The puncture direction detection assembly (7) comprises a plurality of layers of color different indicating pads (71) and a marking ruler (72), wherein the indicating pads (71) are integrally arranged, and each layer of the indicating pads (71) is made of a flexible light-transmitting material; An adjusting groove (73) is arranged at the connection position of the indicating pad (71) and the marking ruler (72), and is used for adjusting the relative position between the indicating pad (71) and the marking ruler (72); The marking ruler (72) comprises a ruler body (721), and the ruler body (721) is provided with a marking line (722).

5. The model according to claim 1, wherein: The anti-skid pad (5) comprises a main body plate (51), a plurality of anti-skid protrusions (52) are uniformly and fixedly arranged on one side of the main body plate (51), and the smooth surface of the main body plate (51) without the anti-skid protrusions (52) is fixedly connected with the buttock and back plane position of the model main body (11).

6. The model according to claim 2, wherein: The cross-sectional shape of the extrusion plate (18) is arc-shaped, and the maximum elastic force of the telescopic spring (19) is less than the stress intensity of the flexible air bag (161).

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