A visualized simulation flexor tendon suture training platform

Abstract

This utility model relates to a visual simulation training platform for flexor tendon suturing. Its overall shape is a human hand model, including fingers, palm, and wrist. It also includes: a simulated skin layer mounted on the outer surface of the hand model; grooves on the palm-facing side of the fingers; a bone layer mounted in the grooves of the fingers to simulate the five digits of the human hand; and a tendon mounted in the grooves of the fingers on the surface of the bone layer. The tendon includes a fingertip segment and a root segment, with the fingertip segment connected to the fingertip and the root segment connected to a spring-loaded capacitive pressure sensor via a spring. A certain gap is maintained between the fingertip and root segments. The operation process and results are visualized, enabling effective real-time monitoring of the tension received by the simulated tendon during suturing, and allowing assessment of any defects in the suturing process and the stability of the suturing result based on the tension.

Description

Technical Field

[0001] This utility model relates to the field of medical training equipment technology, and in particular to a visual simulation flexor tendon suturing training platform. Background Technology

[0002] The hand is an indispensable organ for normal human life, work, and study, and it is also a common type of injury in various accidents. Hand injuries often involve tendon damage, requiring surgical repair. In actual clinical practice, improper tendon suturing can lead to tendon adhesions, affecting hand function. Therefore, medical students and doctors need to continuously practice tendon suturing techniques to fully master the skills and ensure tendon healing and functional recovery after anastomosis. In medical education, teaching models are important tools to help medical students and doctors master surgical techniques. However, traditional tendon suturing teaching aids usually only provide practice with simple suturing methods, have low visual simulation, and lack the anatomical structure of the hand. Traditional tendon models do not possess the characteristic of natural retraction of tendon ends in real tendon injuries, and cannot monitor and provide feedback on the suturing effect during the suturing process. Furthermore, hand injuries are often complex, frequently accompanied by damage to skin, bone, and tendons. Traditional tendon suturing teaching aids cannot meet the practice requirements for complex injury situations, which limits the learner's understanding and mastery of the key points of tendon suturing techniques.

[0003] The published patent CN2919418Y, a medical surgical operation training kit, allows for training or skills assessment in basic surgical operations such as incision, suturing, instrument knotting, and suture cutting, as well as hand surgical operations such as tendon suturing, vascular anastomosis, nerve suturing, and treatment of common hand injuries, as needed. However, this utility model patent only provides practice in simple suturing methods, has poor stability, cannot simulate real flexor tendon injuries, cannot monitor and provide feedback on the suturing effect during the suturing process, and cannot simulate tendon suturing for complex injuries.

[0004] Therefore, developing a tendon suturing teaching aid with high simulation of appearance and structure, natural retraction characteristics of tendon ends, and the ability to monitor and provide feedback on suturing effects and simulate comprehensive injuries is of great significance for the skills training of medical students and the technical improvement of doctors, so as to popularize and improve the treatment level of hand injuries. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a visual simulation flexor tendon suturing training platform. This platform features the natural retraction characteristics of tendon ends, the ability to monitor and provide feedback on suturing effectiveness, and simulates comprehensive injuries. This facilitates medical students and doctors' understanding and mastery of key techniques during tendon suturing practice, thereby better popularizing and improving the treatment level of hand injuries. Specifically, the technical solution of this invention to achieve the above objectives is as follows:

[0006] A visual simulation training platform for flexor tendon suturing, its overall shape being a human hand model, including fingers, palm, and wrist; also includes:

[0007] A simulated skin layer is installed on the outer surface of the hand model; the fingers have grooves on the palm side;

[0008] A bone layer is installed in the slot of the finger section to simulate the bones of the five fingers of a human hand.

[0009] A tendon is installed in a slot in the finger and located on the surface of the bone layer; the tendon includes a fingertip segment and a finger root segment, the end of the fingertip segment is connected to the fingertip, and the end of the finger root segment is connected to a spring-type capacitive pressure sensor via a spring; a certain gap is left between the fingertip segment and the finger root segment;

[0010] A spring-type capacitive pressure sensor includes an elastic connection part, a display part, and a control part; the elastic connection part is disposed and installed in the palm of the hand, and its connection point passes through the inside of the palm and connects to the root segment of the finger at the root of the finger; the display part and the control part are disposed and installed on the wrist and connected to the elastic connection part along the outside of the palm.

[0011] Furthermore, it also includes a tendon sheath layer; the tendon sheath layer is fixedly installed on the bone layer, and the tendon sheath layer is an arched hollow structure protruding towards the palm, with its axis being the same as the extension direction of the bone in the bone layer; the tendon sheath layer has two segments, with the finger root segment and the finger tip segment respectively located in the two segments of the tendon sheath layer.

[0012] Furthermore, protruding buckles are provided on both sides of the fingertip position within the groove of the finger portion to engage and fix the fingertip segment.

[0013] Furthermore, the elastic connection part includes a body and a clamping end. The clamping end includes a fixed shell, a pressing post, and a clip. The clip is located at the bottom of the fixed shell, and a through hole is provided at the top of the fixed shell. The pressing post is movably installed on the top of the fixed shell through the through hole. The bottom of the pressing post is located directly above the pressing end of the clip, and the opening end of the clip is directly opposite the base of the finger.

[0014] Furthermore, the simulated skin layer is made of a mixture of R-6010A silicone rubber and R-6010B silicone rubber; the tendon is made of ultra-high molecular weight polyethylene; and the bone layer is made of polyvinyl chloride material.

[0015] Furthermore, the tendon sheath layer is made of silicone rubber.

[0016] Furthermore, the gap between the fingertip segment and the finger root segment is between 0.4 and 0.8 cm.

[0017] Furthermore, it also includes a support plate, which is installed on the back of the human hand model and fixedly connected to the palm and wrist respectively, for supporting the human hand model.

[0018] The working principle is as follows: This structure simulates a flexor tendon rupture. During the surgery, the main steps are to locate the retracted tendon within the tendon sheath layer 16 and counteract the flexor tension connecting the proximal ruptured tendon, ensuring a firm suture between the two tendon segments. During suturing, the traction direction is aligned with the tendon retraction direction. This is achieved through a spring-type capacitive pressure sensor's internal spring 15, which directly monitors the tension. The simulated skin layer 4 is composed of a mixture of R-6010A and R-6010B silicone rubber, mimicking the appearance and feel of human skin and providing space and position for tendon suturing, facilitating suturing training. The tendon sheath layer 16 is made of silicone rubber, which is soft and elastic, adapting to and protecting the normal function of the tendon. The tendon is made of ultra-high molecular weight polyethylene (UHMWPE), which has good toughness, wear resistance, and low elasticity, avoiding interference with the tension of the pressure sensor. One side of the tendon is connected to a spring-type capacitive pressure sensor, which monitors changes in tension before and after tendon suturing to reflect the suturing effect in real time. When a flexor tendon ruptures, due to the high tension of the flexor muscle, the proximal end of the ruptured tendon usually retracts into the proximal tendon sheath due to the traction of the flexor muscle. Locating the retracted flexor tendon from the proximal tendon sheath is a crucial and challenging step in the surgical procedure. In the flexor tendon anastomosis model, a spring-loaded capacitive pressure sensor is designed. Spring 15 pulls on the "ruptured" flexor tendon, causing the proximal end to retract into the simulated tendon sheath. This necessitates completing the operation of "locating the retracted flexor tendon from the proximal tendon sheath" during the training process. The bone layer 12 is made of polyvinyl chloride (PVC), a material with good wear resistance and plasticity, which greatly replicates the actual bone structure.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (i) Simulate the real hand structure and the characteristics of flexor tendons, including the simulated layered structure of skin, tendon sheath, tendon, and bone layers, as well as a simulation model that can simulate the elasticity characteristics of ruptured tendons.

[0021] (ii) Visualization of operation process and results: A spring-type capacitive pressure sensor is fixed to one side of the simulated tendon, which can effectively monitor the tension received by the simulated tendon being sutured in real time during the suturing operation, and evaluate whether there are defects in the suturing process and whether the suturing result is stable based on the tension.

[0022] (III) Adjustable process and result monitoring: When performing tendon suturing, the range of reference values ​​for the change in tensile force before and after tendon suturing can be set according to different suturing methods and practice and assessment requirements. When the change in tensile force during the operation is within the set range, it indicates that the operation is effective. When it exceeds the range, the alarm system is triggered to indicate that the operator has made an error and that the tendon is not sutured tightly.

[0023] (iv) Replaceable components can minimize damage caused by repeated use or excessive operation, as well as the problem of decreased monitoring sensitivity;

[0024] (v) A comprehensive training platform: This invention also includes a model of tendon rupture with fracture, which is suitable for comprehensive injury simulation surgery. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present utility model;

[0026] Figure 2 This is a three-dimensional schematic diagram of another embodiment of the present invention;

[0027] Figure 3 This is a front view of an embodiment of the present utility model;

[0028] Figure 4 This is a right view of an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of a partial structure of the finger portion according to an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of a partial structure of the palm portion according to an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the elastic connection part structure according to an embodiment of the present utility model;

[0032] Figure 8 This is a schematic diagram showing the elastic connection part in use according to an embodiment of the present utility model;

[0033] In the diagram: 1—finger part, 11—groove, 12—bone layer, 13—finger tip segment, 14—finger base segment, 15—spring, 16—tendon sheath layer, 17—protruding buckle; 2—palm part; 3—wrist part; 4—simulated skin layer; 5—elastic connection part, 51—fixed shell, 52—downward pressure column, 53—clamp; 6—display part; 7—control part. Detailed Implementation

[0034] like Figure 1-8 As shown, the embodiments of this utility model are as follows:

[0035] A visual simulation training platform for flexor tendon suturing is shaped like a human hand model, including a finger part 1, a palm part 2, and a wrist part 3; it also includes a simulated skin layer 4, a bone layer 12, a tendon, a tendon sheath layer 16, a support plate, and a spring-type capacitive pressure sensor.

[0036] The simulated skin layer 4 is made of a mixture of R-6010A and R-6010B silicone rubber; it simulates the appearance and feel of human skin and provides space and position for suturing tendons, facilitating suturing training. It is installed on the outer surface of the hand model; the finger section 1 has a groove 11 on the palm side.

[0037] The bone layer 12 is made of polyvinyl chloride (PVC), which has good wear resistance and plasticity, and can greatly replicate the structure of real bones. It is installed in the slot 11 of the finger section 1 to simulate the bones of the five fingers of a human hand.

[0038] The tendon is made of ultra-high molecular weight polyethylene (UHMWPE). UHMWPE has good toughness, wear resistance, and low elasticity, which can avoid affecting the tension of the pressure sensor. It is installed in the slot 11 of the finger section 1 on the surface of the bone layer 12. The tendon includes a fingertip segment 13 and a finger root segment 14. The end of the fingertip segment 13 connects to the fingertip, and the end of the finger root segment 14 connects to the spring-type capacitive pressure sensor via a spring 15. A certain gap is left between the fingertip segment 13 and the finger root segment 14. The gap between the fingertip segment 13 and the finger root segment 14 is between 0.4 and 0.8 cm. Protruding buckles 17 are provided on both sides of the fingertip position within the slot 11 of the finger section 1 to lock and fix the fingertip segment 13. The tendon sheath layer 16 is made of silicone rubber, which is soft and elastic, and can adapt to and protect the normal function of the tendon. The tendon sheath layer 16 is fixedly installed on the bone layer 12. It is an arched hollow structure protruding towards the palm, and its axis is the same as the direction of bone extension of the bone layer 12. The tendon sheath layer 16 has two segments, the root segment 14 and the tip segment 13, which are respectively located in the two segments of the tendon sheath layer 16.

[0039] The spring-type capacitive pressure sensor includes a spring-loaded connecting part 5, a display part 6, and a control part 7. The spring-loaded connecting part 5 is installed in the palm of the hand part 2, and its connection point passes through the inside of the palm and connects to the root segment 14 of the finger part 1. The display part 6 and the control part 7 are installed on the wrist part 3 and are connected to the spring-loaded connecting part 5 along the outside of the palm. The spring-loaded connecting part 5 includes a body and a clamping end. The clamping end includes a fixed shell 51, a pressing post 52, and a clip 53. The clip 53 is located at the bottom of the fixed shell 51, and the top of the fixed shell 51 is provided with a through hole. The pressing post 52 is movably installed on the top of the fixed shell 51 through the through hole. The bottom of the pressing post 52 is located directly above the pressing end of the clip 53, and the open end of the clip 53 is directly opposite the root position of the finger part 1.

[0040] The support plate is installed on the back of the human hand model and is fixedly connected to the palm part 2 and the wrist part 3 respectively, for supporting the human hand model.

[0041] This structure simulates a flexor tendon rupture. During the simulated surgery, the main steps are to locate the retracted tendon within the tendon sheath layer 16, counteract the flexor tension connecting the proximal ruptured tendon, and securely suture the two tendon segments. During suturing, the traction direction is aligned with the tendon retraction direction. This is achieved through a spring 15 inside a spring-type capacitive pressure sensor, which directly monitors the tension.

[0042] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, or improvements made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A visual simulation flexor tendon suturing training platform, the overall shape of which is a human hand model, including a finger part (1), a palm part (2) and a wrist part (3); characterized in that, include: A simulated skin layer (4) is installed on the outer surface of the hand model; the finger part (1) has a groove (11) on the palm side; A bone layer (12) is installed in the slot (11) of the finger part (1) to simulate the five finger bones of a human hand; A tendon is installed in a slot (11) of the finger portion (1) on the surface of the bone layer (12); the tendon includes a fingertip segment (13) and a finger root segment (14), the end of the fingertip segment (13) is connected to the fingertip, and the end of the finger root segment (14) is connected to a spring-type capacitive pressure sensor via a spring (15); a certain gap is left between the fingertip segment (13) and the finger root segment (14); A spring-type capacitive pressure sensor includes an elastic connection part (5), a display part (6), and a control part (7); the elastic connection part (5) is installed in the palm of the hand part (2), and its connection point passes through the inside of the palm and is connected to the root segment (14) of the finger part (1); the display part (6) and the control part (7) are installed on the wrist part (3) and are connected to the elastic connection part (5) along the outside of the palm.

2. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: It also includes a tendon sheath layer (16); the tendon sheath layer (16) is fixedly installed on the bone layer (12), the tendon sheath layer (16) is an arched hollow structure protruding towards the palm, and its axis is the same as the extension direction of the bone in the bone layer (12); the tendon sheath layer (16) has two segments, the finger root segment (14) and the finger tip segment (13) are respectively located in the two segments of the tendon sheath layer (16).

3. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: The finger section (1) has protruding buckles (17) on both sides of the fingertip position in the groove (11) for engaging and fixing the fingertip segment (13).

4. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: The elastic connecting part (5) includes a body and a clamping end. The clamping end includes a fixed shell (51), a pressing post (52), and a clip (53). The clip (53) is located at the bottom of the fixed shell (51). A through hole is provided at the top of the fixed shell (51). The pressing post (52) passes through the through hole and is movably installed at the top of the fixed shell (51). The bottom of the pressing post (52) is located directly above the pressing end of the clip (53). The opening end of the clip (53) is directly opposite the base of the finger (1).

5. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: The simulated skin layer (4) is made of a mixture of R-6010A silicone rubber and R-6010B silicone rubber; the tendon is made of ultra-high molecular weight polyethylene; and the bone layer (12) is made of polyvinyl chloride.

6. The visual simulation flexor tendon suturing training platform as described in claim 2, characterized in that: The tendon sheath layer (16) is made of silicone rubber.

7. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: The gap between the fingertip segment (13) and the finger root segment (14) is between 0.4 and 0.8 cm.

8. The visual simulation flexor tendon suturing training platform as described in claim 1, characterized in that: It also includes a support plate, which is installed on the back of the human hand model and is fixedly connected to the palm (2) and wrist (3) respectively, for supporting the human hand model.

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