Teaching model for skin suture

Abstract

The invention belongs to the technical field of skin simulation suturing, and particularly relates to a skin suturing teaching model which comprises a tool kit, a fitting ring is arranged at the top of the outer cambered surface of the tool kit, a placement cavity is formed in the upper surface of the tool kit, and a tension assembly is connected to the surface of one side of the tool kit in a penetrating mode. The tension assembly comprises a tension shaft connected to one side of the tool kit in a penetrating mode, the outer arc face of the end, penetrating through the tool kit, of the tension shaft is sleeved with a positioning bolt, and the outer arc face of the positioning bolt abuts against the lower surface of the attaching ring. A large-area and irregularly-shaped wound can be restored, a teacher can quickly adjust the crack state of the model according to teaching requirements in the nursing teaching process, students can carry out skin suturing exercises at different difficulty levels, and the suturing ability of the students to cope with complex wounds is practically improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of skin simulation suture, and specifically relates to a teaching model for skin suture. Background Art

[0002] Skin suture is a basic skill that medical staff must master in clinical practice. It is used to handle skin wounds, promote wound healing, reduce the risk of infection, and minimize scar formation as much as possible. With the help of specific suture instruments and suture materials, the skin damage caused by surgery, trauma, etc. is sutured and repaired to restore the continuity and integrity of the skin. It is the most commonly used method, with each stitch tied separately. It is applicable to the suture of various tissues such as skin, subcutaneous tissue, and fascia. The advantages are simple operation, the breakage of one suture does not affect other parts, and it has less impact on local blood circulation.

[0003] Previous teaching mostly relied on theoretical explanations and simple simulation demonstrations. Teachers explained the steps and key points of skin suture in class through pictures, videos or simple demonstrations on models. However, students lacked real operation experience and it was difficult to intuitively understand and master the feel of suture, force control, and suture techniques for different tissue layers. This teaching method often led to situations such as nervousness and inexperience when students performed actual operations, affecting the suture effect and the healing of patients.

[0004] Therefore, the present invention provides a product of a teaching model for skin suture. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A teaching model for skin suture according to the present invention includes a tool set box. A fitting ring is provided at the top of the outer arc surface of the tool set box. A placement cavity is opened on the upper surface of the tool set box. A tension component is connected through one side surface of the tool set box. The tension component includes a tension shaft connected through to one side of the tool set box. A positioning bolt is sleeved on the outer arc surface of one end of the tension shaft passing through the tool set box. The outer arc surface of the positioning bolt abuts against the lower surface of the fitting ring. An extension end A is provided on one side of the outer arc surface of the positioning bolt. A limit clamping ring is movably sleeved on the outer arc surface of the tension shaft on the side away from the positioning bolt. An extension end B is provided on one side surface of the limit clamping ring near the positioning bolt. The extension end B and the extension end A are in the same plane. A gasket is attached to one side of the limit clamping ring. A through hole is opened in the middle of one side surface of the gasket. The gasket is movably connected to the tension shaft through the through hole on one side. A filling ring abuts against the through hole on the inner arc surface of the gasket. An expansion ring A is connected to the outer arc surface of one side edge of the filling ring.

[0007] One end face of the tension axis is provided with a threaded section. The top of the outer arc surface of the filling ring is connected with an expansion ring B. A conical spring is fixedly installed on the outer arc surface of the extension end A, and one end of the conical spring is fixedly installed in the outer arc surface of the extension end B.

[0008] The number of the filling rings is two. The inner arc surface of one of the filling rings is sleeved on the threaded section, and the inner arc surface of the other filling ring is sleeved in the tension axis. The inner arc surface of the gasket is sleeved on the threaded section, and one side of the gasket abuts against a rubber pad.

[0009] Inner concave conical cavities are provided on the inner arc surfaces of the expansion ring A and the expansion ring B. A bent end is provided on the top of the outer arc surface of the expansion ring A, and the bent end on the top of the expansion ring A and the bent end on the top of the expansion ring B are placed opposite to each other.

[0010] An inclined guide is movably connected to the outer arc surface of the threaded section close to the expansion ring A. One end of the inclined guide is provided with a columnar end, and a hook-shaped end is provided on one side of the columnar end. A deformation groove is provided between the columnar end and the hook-shaped end, and the outer arc surface of the hook-shaped end is placed in the inner concave conical cavity.

[0011] A transmission assembly is sleeved on the outer arc surface of the threaded section close to the expansion ring B. The transmission assembly includes a threaded sleeve ring A movably sleeved on the outer arc surface of the threaded section. The outer arc surface of the threaded sleeve ring A is movably connected with a first connecting plate. Pin shafts are provided at the bottoms of both side surfaces of the first connecting plate, and the first connecting plate is connected to the threaded sleeve ring A through the pin shafts at both bottoms of the side surfaces.

[0012] The middle of one side surface of the first connecting plate is movably connected with a second connecting plate through a rotating shaft, and a supporting surface is provided on the upper surface of the first connecting plate.

[0013] A rotary lock pin is fixedly installed on the side of the second connecting plate far away from the first connecting plate. The second connecting plate is movably connected with a connecting rod through the rotary lock pin on one side, and a threaded sleeve ring B is fixedly installed at one end of the connecting rod.

[0014] The inner arc surface of the threaded sleeve ring B is threadedly connected to the outer arc surface of the threaded section. One end of the threaded section penetrates through the side surface of the tool kit and is fixedly installed with a knob. A nut is sleeved close to the tool kit on the threaded sleeve ring B, and a compression spring is fixedly installed between the threaded sleeve ring B and the nut.

[0015] The top of the inner arc surface of the tool kit is sleeved with a skin model. Subcutaneous tissue is provided on the lower surface of the skin model. The lower surface of the skin model is attached to the top of the first connecting plate. A suture opening is provided on the upper surface of the skin model, and the suture opening is placed between the expansion ring A and the expansion ring B.

[0016] The beneficial effects of the present invention are as follows: 1. The tension component can simulate a variety of ranges of injured fissures of different patients. It can simulate both small and regular surgical incisions and restore large-area and irregularly shaped traumatic wounds. During the nursing teaching process, teachers can quickly adjust the fissure state of the model according to teaching needs, enabling students to carry out skin suture practice at different difficulty levels and effectively improving students' suture ability to handle complex wounds.

[0017] 2. By observing the changes of the inclined guide under different clamping states through the tension component and the inclined guide, the relationship between the needle insertion angle and the wound shape can be more intuitively understood, quickly mastering the correct suture technique and reducing tissue damage caused by improper needle insertion angle.

[0018] 3. Through the tension component and the transmission component, the dynamic simulation of the suture opening size is realized. Students can intuitively observe how their operations affect the wound shape, and then make timely adjustments to the angle, strength, and position of the needle insertion, improving the pertinence and effectiveness of the practice. In addition, the model can also simulate skin tissues with different tensions and elasticities by adjusting the pitch of the threaded section to meet diverse teaching needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a schematic cross-sectional structure diagram of the overall skin model of the present invention; Figure 2 is an overall three-dimensional view of the present invention; Figure 3 is a schematic connection overall structure diagram of the tension component and the transmission component in the present invention; Figure 4 is a partial cross-sectional structure diagram of the tension component in the present invention; Figure 5 is a schematic cross-sectional structure diagram of the whole in the present invention; Figure 6 is a structural diagram of the inclined guide in the present invention; Figure 7 is a disassembled structure diagram of the transmission component in the present invention; Figure 8 is a schematic back structure diagram of the transmission component in the present invention.

[0021] In the figure: 1. Tool kit; 101. Fitting ring; 102. Placing cavity; 2. Tension assembly; 21. Tension shaft; 22. Positioning bolt; 23. Extension end A; 24. Limit snap ring; 25. Extension end B; 26. Spacer; 27. Filler ring; 28. Expansion ring A; 281. Concave conical cavity; 282. Bent end; 29. Threaded section; 210. Rubber pad; 211. Expansion ring B; 212. Conical spring.

[0022] 3. Inclined guide; 31. Cylindrical end; 32. Hooked end; 33. Deformation groove.

[0023] 4. Transmission assembly; 41. Threaded collar A; 42. First connecting plate; 43. Pin shaft; 44. Second connecting plate; 45. Support surface; 46. Turn lock pin; 47. Link; 48. Threaded collar B; 49. Compression spring.

[0024] 5. Skin model; 51. Subcutaneous tissue; 52. Suture opening. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0026] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown in the figure, the tool kit 1 described in the embodiment of the present invention includes a fitting ring 101 provided at the top of the outer arc surface of the tool kit 1, a placement cavity 102 is opened on the upper surface of the tool kit 1, and a tension assembly 2 is connected through one side surface of the tool kit 1. The tension assembly 2 includes a tension shaft 21 connected through to one side of the tool kit 1. The tension shaft 21 passes through the outer arc surface of one end of the tool kit 1 and is sleeved with a positioning bolt 22. The outer arc surface of the positioning bolt 22 abuts against the lower surface of the fitting ring 101. One side of the outer arc surface of the positioning bolt 22 is provided with an extension end A 23. A limit retaining ring 24 is movably sleeved on the outer arc surface of the tension shaft 21 away from the positioning bolt 22. One side surface of the limit retaining ring 24 near the positioning bolt 22 is provided with an extension end B 25. The extension end B 25 and the extension end A 23 are in the same plane. One side of the limit retaining ring 24 is attached with a gasket 26. A through hole is opened in the middle of one side surface of the gasket 26. The gasket 26 is movably connected to the tension shaft 21 through the through hole on one side. A filling ring 27 abuts against the through hole on the inner arc surface of the gasket 26. One side edge of the outer arc surface of the filling ring 27 is connected with an expansion ring A 28. A threaded section 29 is provided on one side end surface of the tension shaft 21. The top of the outer arc surface of the filling ring 27 is connected with an expansion ring B 211. A conical spring 212 is fixedly installed on the outer arc surface of the extension end A 23. One end of the conical spring 212 is fixedly installed in the outer arc surface of the extension end B 25. The number of the filling rings 27 is two. The inner arc surface of one of the filling rings 27 is sleeved on the threaded section 29, and the inner arc surface of the other filling ring 27 is sleeved in the tension shaft 21. A rubber pad 210 abuts against the inner arc surface of the gasket 26 sleeved on one side of the threaded section 29. Inner concave conical cavities 281 are provided on the inner arc surfaces of both the expansion ring A 28 and the expansion ring B 211. A bent end 282 is provided on the top of the outer arc surface of the expansion ring A 28. The bent end 282 at the top of the expansion ring A 28 and the bent end 282 at the top of the expansion ring B 211 are placed opposite to each other.

[0027] In the skin tissue model system, the whole device is stably installed in the middle of one side of the tool kit 1 through the positioning bolt 22 on one side. Inside the hollow structure of the inner arc surface, the tension shaft 21 passes through it, playing a role of support and linkage. The expansion ring A 28 sleeved on the outer arc surface, and all related components on one side of it are movably sleeved with the tension shaft 21, ensuring good flexibility. When the expansion ring A 28 between the limit retaining ring 24 and the gasket 26 on the surface is subjected to a lateral extrusion force, according to Figure 5 As shown in the figure, the expansion ring A 28 can achieve linear movement from left to right, or relative movement with the expansion ring B 211.

[0028] Meanwhile, the coordinated movement of the expansion ring A28 and the expansion ring B211 on the tension axis 21 can control the size of the suture opening 52. With this feature, the model can simulate a variety of ranges of injured fissures in different patients, including both small and regular surgical incisions and large and irregularly shaped traumatic wounds. During the nursing teaching process, teachers can quickly adjust the fissure state of the model according to teaching needs, allowing students to carry out skin suture practice at different difficulty levels, effectively improving students' suture ability to handle complex wounds. In addition, the model is also reserved with a data acquisition interface, and a pressure sensor can be connected later to quantify the operation force when students suture, providing a more scientific and objective basis for teaching evaluation.

[0029] As Figure 5 and Figure 6 shown, a tilt guide 3 is movably connected to the outer arc surface of the expansion ring A28 near the threaded section 29. One end of the tilt guide 3 is provided with a cylindrical end 31, and a hook-shaped end 32 is provided on one side of the cylindrical end 31. A deformation groove 33 is provided between the cylindrical end 31 and the hook-shaped end 32, and the outer arc surface of the hook-shaped end 32 is placed in the inner concave conical cavity 281.

[0030] In the design of the professional nursing teaching model, the inner concave conical cavity 281 of the expansion ring A28 and the tilt guide 3 provide targeted suture needle angle guidance for students. The tilt guide 3 is sleeved in the inner concave conical cavity 281. When the expansion ring A28 and the expansion ring B211 approach each other under the action of the tension axis 21, the cylindrical end 31 of the tilt guide 3 will move linearly until one side end face thereof closely abuts against the bottom surface of the inner concave conical cavity 281. As the expansion ring B211 continues to approach, it gradually forms a stable clamping state with the expansion ring A28.

[0031] The tilt guide 3 is made of an elastic material and has excellent deformation ability. When the expansion ring B211 approaches the hook-shaped end 32, the hook-shaped end 32 will be subjected to a squeezing force, and thus will bend, compressing the internal space of the deformation groove 33. This process causes the inclined surface angle at the top of the hook-shaped end 32 to change dynamically, which can flexibly adapt to different angles when the suture needle is inserted, helping students easily find and maintain the correct needle insertion angle during practice.

[0032] Moreover, when students simulate suture operations, by observing the changes of the tilt guide 3 in different clamping states, they can more intuitively understand the relationship between the needle insertion angle and the wound shape, quickly master the correct suture technique, and reduce tissue damage caused by improper needle insertion angle. Also, due to the elastic characteristics of the tilt guide 3 simulating the force deformation of real skin tissue during suture, students can obtain a more clinically realistic operation experience during practice, enhancing the sense of reality and control of the suture operation.

[0033] As Figure 3 ,Figure 5 , Figure 7 and Figure 8 As shown in Figure 8 , a transmission component 4 is sleeved on the outer arc surface of the threaded section 29 near the expansion ring B211. The transmission component 4 includes a threaded sleeve ring A41 movably sleeved on the outer arc surface of the threaded section 29. The outer arc surface of the threaded sleeve ring A41 is movably connected to a first connecting plate 42. The bottom of both side surfaces of the first connecting plate 42 is provided with a pin shaft 43. The first connecting plate 42 is connected to the threaded sleeve ring A41 through the pin shafts 43 at both bottom sides. The middle of one side surface of the first connecting plate 42 is movably connected to a second connecting plate 44 through a rotating shaft. The upper surface of the first connecting plate 42 is provided with a supporting surface 45. A rotating lock pin 46 is fixedly installed on the side of the second connecting plate 44 away from the first connecting plate 42. The second connecting plate 44 is movably connected to a connecting rod 47 through a rotating lock pin 46 on one side. One end of the connecting rod 47 is fixedly installed with a threaded sleeve ring B48. The inner arc surface of the threaded sleeve ring B48 is threadedly connected to the outer arc surface of the threaded section 29. One end of the threaded section 29 penetrates through the outer surface of one side of the tool kit box 1 and is fixedly installed with a knob. A nut is sleeved near the tool kit box 1 on the threaded sleeve ring B48. A compression spring 49 is fixedly installed between the threaded sleeve ring B48 and the nut. The top of the inner arc surface of the tool kit box 1 is sleeved with a skin model 5. The lower surface of the skin model 5 is provided with subcutaneous tissue 51. The lower surface of the skin model 5 is attached to the top of the first connecting plate 42. The upper surface of the skin model 5 is provided with a suture opening 52. The suture opening 52 is placed between the expansion ring A28 and the expansion ring B211.

[0034] According to the above description, during the operation of the nursing teaching model, to control the movement of the expansion ring B211. Specifically, when a student performs a suture operation and inserts the needle, the inner side of the hand naturally contacts the top of the skin model 5, and the gravity of the hand is immediately transmitted to the supporting surface 45 at the top of the first connecting plate 42. Referring to Figure 8 the structure in Figure 8 , during the dynamic process of the student inserting the needle, the supporting surface 45 is stressed and moves downward. The first connecting plate 42 is in a diamond structure. When this structure moves downward, the rear end and the front end will generate reverse upward movements. As one end of the first connecting plate 42 moves upward, the threaded sleeve ring A41 connected to the inside of this end through the pin shaft 43 and the first connecting plate 42 generates displacement along the horizontal threaded section 29. The cooperation between the threaded sleeve ring A41 and the threaded section 29 not only limits the movement range of the first connecting plate 42 but also guides one end of it to advance horizontally. During this process, the expansion ring B211 in contact with the front end of the first connecting plate 42 moves in the direction of the expansion ring A28 under the guiding action of the sleeved threaded section 29, realizing the dynamic simulation of the size of the suture opening 52.

[0035] This student's suture practice brings a highly realistic operation experience. During the student's suture process, the force and movement of each needle insertion make the change of the suture opening 52 highly consistent with the deformation of the wound under force in actual clinical operations. The student can intuitively observe how their operation affects the wound shape, and then make timely adjustments to the angle, force, and position of the needle insertion, improving the pertinence and effectiveness of the practice. In addition, the model can simulate skin tissues with different tensions and elasticities by adjusting the pitch of the threaded section 29, meeting diverse teaching needs, assisting teachers in carrying out hierarchical teaching, and cultivating students' adaptability in the face of different types of wounds. At the same time, the rotation of the threaded section 29 can be controlled by turning the knob on one side to control the opening and closing range of the expansion ring A28 and the expansion ring B211.

[0036] The above front, back, left, right, up, and down are all based on the Figure 1 description in the attached drawings of the specification. According to the standard of the observer's perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the protection scope of the present invention.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching model for skin suturing, characterized in that: The tool box comprises a tool kit (1), wherein a fitting ring (101) is provided on the top of the outer arc surface of the tool box (1), a placement cavity (102) is provided on the upper surface of the tool box (1), and a tension component (2) is connected through one side surface of the tool box (1); The tension assembly (2) comprises a tension shaft (21) which is connected to one side of the tool box (1); the outer arc surface of one end of the tension shaft (21) which passes through the tool box (1) is sleeved with a positioning bolt (22); the outer arc surface of the positioning bolt (22) abuts against the lower surface of the fitting ring (101); one side of the outer arc surface of the positioning bolt (22) is provided with an extension end A (23); the outer arc surface of the tension shaft (21) on the side away from the positioning bolt (22) is movably sleeved with a limit clamp (24); one side of the limit clamp (24) An extension end B (25) is provided on the surface near the positioning bolt (22), and the extension end B (25) and the extension end A (23) are in the same plane. A gasket (26) is attached to one side of the limiting clamp ring (24), and a through hole is opened in the middle of one side surface of the gasket (26). The gasket (26) is movably connected to the tension shaft (21) through the through hole on one side. A filling ring (27) is abutted at the through hole on the inner arc surface of the gasket (26), and an expansion ring A (28) is connected to the edge of one side of the outer arc surface of the filling ring (27).

2. A teaching model for skin suturing according to claim 1, characterized in that: A threaded section (29) is provided on one end surface of the tension shaft (21); an expansion ring B (211) is connected to the top of the outer arc surface of the filling ring (27); a conical spring (212) is fixedly mounted on the outer arc surface of the extension end A (23); and one end of the conical spring (212) is fixedly mounted in the outer arc surface of the extension end B (25).

3. A teaching model for skin suturing according to claim 2, characterized in that: There are two filling rings (27), wherein the inner arc surface of one of the filling rings (27) is sleeved on the threaded section (29) and the inner arc surface of the other filling ring (27) is sleeved in the tension shaft (21); and a rubber pad (210) is abutted on one side of the inner arc surface of the gasket (26) that is sleeved on the threaded section (29).

4. A teaching model for skin suturing according to claim 2, characterized in that: The inner arc surfaces of the expansion ring A (28) and the expansion ring B (211) are both provided with an inner concave conical cavity (281), and the top of the outer arc surface of the expansion ring A (28) is provided with a bent end (282), and the bent end (282) at the top of the expansion ring A (28) and the bent end (282) at the top of the expansion ring B (211) are placed opposite to each other.

5. A teaching model for skin suturing according to claim 4, characterized in that: The threaded section (29) is movably connected to an outer arc surface of the expansion ring A (28), wherein the inclined guide (3) is provided with a columnar end (31) at one end, a hook-shaped end (32) is provided on one side of the columnar end (31), a deformation groove (33) is provided between the columnar end (31) and the hook-shaped end (32), and the outer arc surface of the hook-shaped end (32) is placed in the concave conical cavity (281).

6. A teaching model for skin suturing according to claim 2, characterized in that: A transmission assembly (4) is sleeved on a side of the outer arc surface of the threaded segment (29) close to the expansion ring B (211); The transmission assembly (4) comprises a threaded collar A (41) movably sleeved on an outer arc surface of a threaded segment (29); the outer arc surface of the threaded collar A (41) is movably connected to a first connecting plate (42); pins (43) are provided at the bottom of both side surfaces of the first connecting plate (42); the first connecting plate (42) is connected to the threaded collar A (41) via the pins (43) at both sides of the bottom.

7. A teaching model for skin suturing according to claim 6, characterized in that: A second connecting plate (44) is movably connected to the middle portion of a side surface of the first connecting plate (42) via a rotating shaft, and a supporting surface (45) is provided on the upper surface of the first connecting plate (42).

8. A teaching model for skin suturing according to claim 7, characterized in that: A rotating lock pin (46) is fixedly mounted on one side of the second connecting plate (44) away from the first connecting plate (42); the second connecting plate (44) is movably connected to a connecting rod (47) via the rotating lock pin (46) on one side; a threaded collar B (48) is fixedly mounted on one end of the connecting rod (47).

9. A teaching model for skin suturing according to claim 8, characterized in that: The inner arc surface of the threaded collar B (48) is threadedly connected to the outer arc surface of the threaded section (29); one end of the threaded section (29) extends to the outside of one side surface of the tool kit (1) and is fixedly mounted with a knob; a nut is sleeved on the threaded collar B (48) near the tool kit (1); a compression spring (49) is fixedly mounted between the threaded collar B (48) and the nut.

10. A teaching model for skin suturing according to claim 6, characterized in that: A skin model (5) is sleeved on the top of the inner arc surface of the tool kit (1); subcutaneous tissue (51) is provided on the lower surface of the skin model (5); the lower surface of the skin model (5) is in contact with the top of the first connecting plate (42); a suture opening (52) is provided on the upper surface of the skin model (5); and the suture opening (52) is placed between the expansion ring A (28) and the expansion ring B (211).

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