Knee arthroscopic surgery vascular nerve protection device

Abstract

The invention belongs to the technical field of orthopedic sports medicine surgery, and discloses a knee arthroscopic surgery vascular nerve protection device which comprises a foldable protection baffle which is a folding fan-shaped baffle and is composed of a folding baffle and fixing plates, the fixing plates are fixed to the two end faces of the folding plate, and a folding element is arranged at the tail end of the protection baffle; the propeller is a slender rod-shaped object, one end of the propeller is connected with the guide-in opening of the protection baffle, the other end of the propeller is provided with an operating handle, the length of the propeller is larger than that of the protection baffle, and the propeller can move in the axis direction of the protection baffle so as to move the position of the protection baffle; and the controller is electronic equipment, is electrically connected with the folding element of the protective shell and the operating handle of the propeller, and can control the opening and closing angle of the protective baffle and the movement of the propeller.

Description

Technical Field

[0001] The invention belongs to the technical field of orthopedic sports medicine surgery, and in particular relates to a blood vessel and nerve protection device for knee arthroscopy surgery. Background Art

[0002] Knee arthroscopy is a common orthopedic surgery, mainly used to treat knee arthritis, cruciate ligament injury, meniscus injury and cartilage injury. Knee arthroscopy usually adopts a minimally invasive method, by making several small incisions of about 5 mm to 1 cm on the knee, and then inserting the arthroscopic device, through the matching camera and tools, to inspect and repair the synovium, cartilage, ligaments and other structures inside the knee joint.

[0003] Although knee arthroscopy has many advantages, such as less trauma, faster recovery, and fewer complications, it also has some risks and challenges, one of which is how to protect the blood vessels and nerves behind the knee joint. There are many important blood vessels and nerves behind the knee joint, such as the popliteal vein, popliteal artery, tibial nerve, etc. These blood vessels and nerves are responsible for the blood supply and sensory conduction of the knee joint and lower limbs. If they are damaged during surgery, it will lead to serious consequences such as bleeding, infection, limb numbness, and dysfunction.

[0004] Currently, in order to protect the blood vessels and nerves behind the knee joint, surgeons usually need to use fingers or tools such as pliers at the incision to push the blood vessels and nerves to one side to avoid contact with the catheter and tools. However, this method has the following disadvantages:

[0005] First, the operation is inconvenient and requires one hand or an assistant, which affects the efficiency and quality of the operation.

[0006] Second, insufficient protection. Due to the different locations and shapes of blood vessels and nerves, it is sometimes difficult to completely advance them, and they may still be hit or punctured by catheters and tools.

[0007] Third, the protection is not long-lasting. Since blood vessels and nerves have a certain elasticity and mobility, they sometimes rebound or shift during surgery and are exposed to the danger zone again.

[0008] Therefore, there is an urgent need for a new vascular nerve protection device for knee arthroscopic surgery that can effectively solve the above problems and improve the safety and effectiveness of knee arthroscopic surgery. Summary of the invention

[0009] In view of the problems existing in the prior art, the present invention provides a vascular nerve protection device for knee arthroscopic surgery.

[0010] The present invention is implemented as follows: a vascular nerve protection device for knee arthroscopy surgery, comprising:

[0011] A foldable protective baffle, which is a folding fan-shaped baffle, composed of a folding baffle and a fixed plate, wherein the fixed plate is fixed to both end surfaces of the folding plate, and a folding element is provided at the end of the protective baffle;

[0012] A propeller, which is a thin and long rod, one end of which is connected to the inlet of the protective baffle, and the other end of which is provided with an operating handle, the length of which is greater than the length of the protective baffle, and the propeller can be moved along the axial direction of the protective baffle to move the position of the protective baffle;

[0013] A controller is an electronic device which is electrically connected to the folding element of the protection baffle and the operating handle of the propeller and can control the opening and closing angles of the protection baffle and the movement of the propeller.

[0014] Furthermore, the folding element is a piezoelectric material that can be deformed under the action of voltage or current.

[0015] Furthermore, the controller can send different electrical signals according to the needs during the operation to adjust the opening and closing angle and speed of the protective baffle.

[0016] Furthermore, the diameter of the protective baffle is less than 5 mm in the retracted state and greater than 10 mm in the expanded state.

[0017] Furthermore, the length of the protective baffle is between 5 cm and 10 cm.

[0018] The present invention provides a vascular nerve protection device for knee arthroscopic surgery, comprising:

[0019] A foldable protective baffle, which is designed in a folding fan shape, consists of a folding baffle and a fixed plate, wherein the fixed plate is fixed to both end surfaces of the folding baffle, and a folding element is provided at the end of the protective baffle;

[0020] A pusher for inserting the protective baffle into the knee joint;

[0021] a controller, electrically connected to the protective baffle and the propeller, for controlling the deformation of the folding element by sending electrical signals, thereby controlling the unfolding and closing of the protective baffle;

[0022] Among them, when the controller sends an expansion signal, the folding element responds and generates an outward force, causing the folding baffle to expand outward to form a protective barrier to prevent the catheter and tools during the operation from touching the blood vessels and nerves; when the controller sends a closing signal, the folding element causes the folding baffle to contract inward, and the protective baffle is back in a closed and folded state for easy removal.

[0023] Among them, the folding element is made of memory metal material or piezoelectric material, and can deform when receiving the electrical signal sent by the controller, thereby controlling the expansion and closing of the protective baffle; the protective baffle, thruster and controller are designed to be lightweight, especially suitable for minimally invasive knee arthroscopic surgery, and the protective baffle can be inserted into the joint through a small incision to achieve efficient protection of blood vessels and nerves.

[0024] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0025] First, the technical solution of the present invention is to address the deficiencies of the existing methods for protecting vascular nerves during knee arthroscopy surgery, and proposes a vascular nerve protection device for knee arthroscopy surgery. The device can automatically separate the vascular nerves from the operating area during knee arthroscopy surgery to form a safe operating space, preventing the vascular nerves from being damaged by catheters and tools while not affecting the surgical operation and field of view, and is easy to insert and remove.

[0026] The technical solution of the present invention has the following creative technical effects:

[0027] First, it improves the safety of knee arthroscopy. The protective baffle can automatically separate the blood vessels and nerves from the operating area, forming a safe operating space, which can effectively prevent the blood vessels and nerves from being damaged by catheters and tools, and reduce the occurrence of serious consequences such as bleeding, infection, limb numbness, and functional disorders.

[0028] Second, it improves the efficiency and quality of knee arthroscopy. Since the expansion and closing of the protective baffle are controlled by the electrical signal of the controller, it does not require manual operation and does not require the use of a hand or an assistant, which can save surgical time and human resources.

[0029] Third, it improves the applicability and versatility of knee arthroscopic surgery. Since the diameter and length of the protective baffle can be adjusted according to the size of the incision and the location of the blood vessels and nerves, it can adapt to different types and cases of knee arthroscopic surgery. At the same time, the material and structure of the protective baffle are simple and economical, and can be easily manufactured and used.

[0030] Second, the present invention adopts a foldable protective baffle, which can automatically shrink and expand according to the electrical signal of the controller to adapt to different incision sizes and blood vessel and nerve positions; the present invention adopts a thruster, which can move along the axial direction of the protective baffle to push the protective baffle in and out, and the operating handle of the thruster can be electrically connected to the controller to control the position of the protective baffle; the present invention adopts a controller, which can send different electrical signals according to the needs of the operation to adjust the opening and closing angle and speed of the protective baffle, and the controller can also display the working status and parameters of the protective baffle to facilitate the doctor's monitoring and adjustment.

[0031] The present invention can effectively protect the blood vessels and nerves behind the knee joint, reduce the risks and complications of surgery, and improve the safety and effect of surgery; the present invention can simplify the operation of the surgery, save time and human resources for the surgery, and improve the efficiency and quality of the surgery; the present invention can adapt to different types and cases of knee arthroscopy surgery, and has high applicability and versatility; the materials and structures of the present invention are simple and economical, have low costs and maintenance expenses, and have strong market competitiveness.

[0032] Third, as auxiliary evidence of the inventiveness of the claims of the present invention, it is also reflected in the fact that the technical solution of the present invention solves the technical problems that people have always been eager to solve but have never been successful:

[0033] The technical solution of the present invention solves a technical problem that people have long been eager to solve but have never been successful, namely, how to effectively protect blood vessels and nerves during knee arthroscopy surgery to prevent them from being damaged by catheters and tools, thereby reducing the risks and complications of the surgery and improving the safety and effectiveness of the surgery.

[0034] Fourth, the vascular nerve protection device for knee arthroscopic surgery of the present invention has shown significant technological progress compared with the prior art through its unique design and working principle, which is mainly reflected in the following aspects:

[0035] 1. Enhanced surgical safety: Through the foldable fan-shaped protective baffle design, the present invention effectively prevents surgical instruments from directly contacting the blood vessels and nerves behind the knee joint, significantly reducing the risk of damage to blood vessels and nerves during surgery. This is crucial to improving surgical safety and reducing the incidence of postoperative complications.

[0036] 2. Operational flexibility and convenience: The expansion and contraction of the protective baffle is controlled by the electrical signal sent by the controller. The present invention realizes the rapid deployment and recovery of the protective baffle, and improves the operational flexibility and convenience during the operation. This electric control operation method is more efficient and accurate than the traditional manual adjustment method, especially in a small surgical space.

[0037] 3. Precise vascular and nerve protection: The introduction of folding elements allows the protective baffle to be accurately unfolded to the appropriate position and size according to surgical needs, providing a customized protection solution for surgery. This precise protection not only ensures the safety of important structures in the surgical area, but also provides greater freedom for surgical operations.

[0038] 4. Simplified surgical process: By designing the protective baffle to be directly inserted and removed through the surgical incision, the present invention simplifies the surgical process and avoids the complicated installation and removal process. This design optimizes the workload in the surgical preparation and end stages, thereby shortening the surgical time and improving the working efficiency of the operating room.

[0039] 5. Improved patient satisfaction: Through the above-mentioned technological advances, the present invention can reduce the damage caused by surgery to the blood vessels and nerves behind the knee joint, thereby alleviating the patient's postoperative pain, speeding up recovery, and reducing the risk of long-term complications, ultimately improving patient satisfaction and the success rate of surgery.

[0040] The knee arthroscopic surgery vascular nerve protection device of the present invention has achieved significant technical progress in surgical safety, operational convenience, vascular nerve protection accuracy, simplified surgical process and patient satisfaction through innovative design and working mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural diagram of a vascular and nerve protection device for knee arthroscopy surgery provided by an embodiment of the present invention in an expanded state;

[0042] Figure 2 It is a structural diagram of a vascular and nerve protection device for knee arthroscopy surgery provided by an embodiment of the present invention in a semi-expanded state;

[0043] Figure 3 It is a structural diagram of a vascular nerve protection device for knee arthroscopy surgery provided by an embodiment of the present invention in a closed state;

[0044] Figure 4 It is a structural diagram of a propeller of a vascular nerve protection device for knee arthroscopy surgery provided by an embodiment of the present invention;

[0045] Figure 5 It is a structural diagram of a controller of a vascular nerve protection device for knee arthroscopy surgery provided by an embodiment of the present invention;

[0046] In the figure: 1. protective baffle; 2. thruster; 3. controller; 4. folding baffle; 5. fixing plate; 6. folding element; 7. cavity; 8. groove or protrusion; 9. operating handle; 10. incision; 11. blood vessels and nerves; 12. bones; 13. catheter; 14. tools; 15. power switch; 16. electrical signal output terminal; 17. electrical signal input terminal; 18. display screen; 19. button. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] The following are two specific embodiments of the vascular nerve protection device for knee arthroscopic surgery of the present invention:

[0049] Embodiment 1

[0050] This embodiment provides a vascular nerve protection device for knee arthroscopic surgery, which is particularly suitable for complex knee arthroscopic surgery, such as posterior cruciate ligament reconstruction. The device includes a foldable protective baffle, which is designed in a folding fan shape and consists of a folding baffle and a fixing plate. The fixing plate is fixed to the two end surfaces of the folding baffle to ensure the stability of the baffle when unfolding and folding. A folding element is provided at the end of the protective baffle, which is made of a memory metal material and has the characteristic of changing shape in response to an electrical signal.

[0051] During the operation, the doctor first inserts the protective baffle and the pusher into the posterior compartment of the knee joint through the incision. The protective baffle and the pusher are connected to the controller placed on the operating table through wires. When the doctor needs to unfold the protective baffle, the controller sends an electrical signal to the folding element. The folding element is acted upon by the voltage, generating an outward force, causing the folding baffle to expand outward to form a protective barrier to prevent the surgical catheter and tools from touching the blood vessels and nerves. At this time, the diameter of the protective baffle is larger than the width of the incision to ensure an effective protection range.

[0052] When the operation is completed and the device needs to be removed, the doctor again sends an opposite electrical signal to the folding element through the controller, and the folding element causes the folding baffle to retract inward, and the protective baffle is back in a closed and folded state, with a diameter smaller than the width of the incision, making it easy to remove through the incision.

[0053] Embodiment 2

[0054] This embodiment provides a vascular nerve protection device for minimally invasive knee arthroscopy. The device also includes a foldable protective baffle with a fan-shaped design, which is composed of a foldable baffle and a fixed plate made of a lightweight alloy material to ensure the lightness and durability of the device. A folding element based on piezoelectric material is provided at the end of the folding baffle, which can deform when stimulated by an electrical signal.

[0055] In minimally invasive surgery, due to the small incision, higher requirements are placed on the size and flexibility of the device. The protective baffle in this embodiment is in a closed and folded state in the initial state, which is convenient for insertion into the knee joint through a small incision. The controller sends an electrical signal, and the piezoelectric material folding element responds and deforms, causing the folding baffle to expand outward to form a protective barrier whose diameter is larger than the incision width, effectively preventing blood vessels and nerves from being damaged during surgery.

[0056] After the operation, the controller sends a reverse electrical signal, the folding element returns to its original state, the folding baffle retracts inward, and the device is in a closed folded state again, making it easy to remove from the incision. The design of this device not only meets the requirements of minimally invasive surgery for device size, but also achieves efficient protection of blood vessels and nerves through precise electrical control.

[0057] The knee arthroscopy surgery blood vessel and nerve protection device provided by the present invention is designed for use in knee arthroscopy surgery to protect the blood vessels and nerves behind the knee joint from being damaged by surgical instruments. The core of the device consists of a foldable protective baffle, a propeller and a controller. The following is its detailed working principle:

[0058] Design and function of the protective baffle: The protective baffle adopts a folding fan-shaped design, consisting of a folding baffle and a fixed plate, where the fixed plate is located at both end surfaces of the folding baffle. A folding element is installed at the end of the protective baffle, which is the key component for the protective baffle to be unfolded and folded.

[0059] Control and operation: The controller is placed on the operating table and is electrically connected to the protective baffle and the propeller. When the controller sends an electrical signal to the folding element of the protective baffle, the folding element generates an outward or inward force according to the nature of the electrical signal.

[0060] When the controller sends an electrical signal to subject the folding element to voltage or current, the folding element generates an outward force. This force causes the folding baffle to expand outward, putting the protective baffle in an unfolded state. In this state, the diameter of the protective baffle is larger than the width of the incision, forming a protective barrier to prevent catheters and tools during surgery from touching the blood vessels and nerves behind the knee joint.

[0061] When the controller sends an opposite electrical signal, the folding element causes the folding baffle to retract inward, and the protective baffle returns to a closed folded state. In this state, the diameter of the protective baffle is smaller than the width of the incision, making it easier to insert or remove the protective baffle through the surgical incision.

[0062] The blood vessel and nerve protection device for knee arthroscopy surgery of the present invention provides effective protection for blood vessels and nerves behind the knee joint through a controllable folding baffle, reducing the risk of injury during surgery. The use of a controller makes the deployment and contraction of the protection baffle simple and convenient, improving the safety and efficiency of the surgery. In addition, the foldable design of the device makes it easy to carry and store, and is suitable for various knee arthroscopy surgery occasions.

[0063] like Figure 1 As shown, the blood vessel and nerve protection device for knee arthroscopy surgery of the present invention comprises a foldable protective baffle, which is a folding fan-shaped baffle, composed of a folding baffle and a fixing plate, the fixing plate is fixed to the two end surfaces of the folding plate, and a folding element is provided at the end of the protective baffle; a foldable protective baffle 1, a propeller 2 and a controller 3, wherein the protective baffle 1 and the propeller 2 are inserted into the inside of the knee joint through an incision 10, and the controller 3 is placed on the operating table and electrically connected to the protective baffle 1 and the propeller 2. The protective baffle 1 is a folding fan-shaped baffle, composed of a folding baffle 4 and a fixing plate 5, the fixing plate 5 is fixed to the two end surfaces of the folding plate 4, and a folding element 6 is provided at the end of the protective baffle;

[0064] like Figure 2 As shown, when the controller 3 sends an electrical signal, the folding element 6 of the protective baffle 1 is acted upon by a voltage or current, generating an outward force, causing the folded baffle of the protective baffle 1 to expand outward. At this time, the protective baffle 1 is in an unfolded state, preventing the blood vessels and nerves 11 from being touched by the catheter 13 and the tool 14, and the diameter thereof is greater than the width of the incision 10;

[0065] like Figure 3 As shown, when the controller 3 sends an opposite electrical signal, the folding element 6 of the protective baffle 1 causes the folding baffle of the protective baffle 1 to retract inward, and the protective baffle 1 is in a closed folded state again, and its diameter is smaller than the width of the incision 10;

[0066] like Figure 4As shown, the propeller 2 is a slender rod, one end of which is connected to the inlet 4 of the protective baffle 1, and the other end is provided with an operating handle 9, whose length is greater than the length of the protective baffle 1, and can be moved along the axial direction of the protective baffle 1 to move the position of the protective baffle 1; the operating handle 9 of the propeller 2 can be electrically connected to the electrical signal input terminal 17 of the controller 3 to receive the electrical signal of the controller 3. According to the different electrical signals, the propeller 2 can move along the axial direction of the protective baffle 1 to promote the insertion and removal of the protective baffle 1. At the same time, the operating handle 9 of the propeller 2 can also be electrically connected to the electrical signal output terminal 16 of the controller 3 to send electrical signals to the controller 3. According to the different electrical signals, the controller 3 can control the opening and closing angle and speed of the protective baffle 1.

[0067] like Figure 5 As shown, the controller 3 is an electronic device, which is electrically connected to the folding element 6 of the protective baffle 1 and the operating handle 9 of the propeller 2. It can control the opening and closing angles of the protective baffle 1 and the movement of the propeller 2. It is provided with a power switch 15, an electrical signal output terminal 16, an electrical signal input terminal 17, a display screen 18 and some buttons 19.

[0068] The vascular nerve protection device for knee arthroscopy surgery of the present invention is composed of three main components, namely a foldable protective baffle 1, a propeller 2 and a controller 3. The protective baffle 1 is fan-shaped and consists of a foldable baffle 4 and a fixed plate 5. The end of the foldable baffle 4 is opened and closed by a folding element 6. During surgery, the protective baffle 1 is inserted into the joint through the knee joint incision 10. When the controller 3 sends an electrical signal to the folding element 6, the folding baffle 4 expands outward under the action of voltage or current, isolating the vascular nerve 11 from the catheter 13 and the tool 14 to protect them from damage. When the surgery is over, the controller 3 sends an opposite electrical signal, and the foldable baffle 4 shrinks inward to a closed state, making it easy to remove it.

[0069] The pusher 2 is a long and thin rod that can move along the axis of the protective baffle 1. One end of the pusher 2 is connected to the inlet 4 of the protective baffle 1, and the other end is provided with an operating handle 9. The pusher 2 can receive signals through the electrical signal input terminal 17 of the controller 3, and push the protective baffle 1 in and out according to the signal instructions. The operating handle 9 of the pusher 2 can also feed back information to the electrical signal output terminal 16 of the controller 3 to control the opening and closing angle and speed of the protective baffle 1, thereby ensuring the accurate operation of the protective device during surgery.

[0070] The controller 3 is the core control device of the whole system, and is electrically connected to the folding element 6 of the protective baffle 1 and the operating handle 9 of the propeller 2. The controller 3 includes a power switch 15, an electrical signal output terminal 16, an electrical signal input terminal 17, a display screen 18, and an operation button 19. The surgeon can send electrical signals through the controller 3 to control the opening and closing angles of the protective baffle 1 and the moving distance of the propeller 2, and view the status information of the device in real time through the display screen 18 to ensure the smooth progress of the operation and the effective protection of the blood vessels and nerves 11. The controller 3 provides precise opening and closing control and propulsion operation to ensure the safety and efficiency of the whole process.

[0071] The working principle and use method of the technical solution of the present invention are as follows:

[0072] Before the knee arthroscopy surgery, the protective baffle 1 is aligned with the blood vessel nerve 11 at the incision 10, and then the protective baffle 1 is pushed along the direction of the blood vessel nerve 11 to the junction of the bone 12 and the blood vessel nerve 11 by the pusher 2. At this time, the protective baffle 1 is in a contracted state, and its diameter is smaller than the width of the incision 10, which does not affect the closure of the incision 10;

[0073] During knee arthroscopy, an electrical signal is sent through the controller 3, so that the folding element 6 of the protective baffle 1 is acted upon by a voltage or a current, thereby generating an outward force, so that the folding baffle of the protective baffle 1 expands outward. At this time, the protective baffle 1 is in an unfolded state, so as to prevent the blood vessels and nerves 11 from being touched by the catheter 13 and the tool 14.

[0074] After the knee arthroscopy surgery, an opposite electrical signal is sent through the controller 3, and the folding element 6 of the protective baffle 1 and the folding baffle of the protective shell 1 shrink inward. At this time, the protective baffle 1 is in a closed folded state again, and its diameter is smaller than the width of the incision 10. The protective baffle 1 is then pulled out of the incision 10 along the direction of the blood vessels and nerves 11 by the thruster 2, thereby completing the recovery of the protective baffle 1.

[0075] Example: Vascular and nerve protection device for knee arthroscopy

[0076] In a specific embodiment, the arthroscopic knee surgery blood vessel and nerve protection device is used in minimally invasive arthroscopic knee surgery, using a small incision to achieve efficient protection of blood vessels and nerves. The core components of the device include a foldable protective baffle 1, a propeller 2 and a controller 3.

[0077] First, the folding protective baffle 1 is made of a memory metal material, which will deform after receiving the electrical signal sent by the controller 3. When performing surgery, the doctor inserts the protective baffle 1 into the joint through a small incision 10 on the knee joint. Through the controller 3, the electrical signal is transmitted to the folding element 6, and the memory metal material will deform outward according to the received electrical signal, pushing the folding baffle 4 to expand outward, isolating the blood vessels and nerves 11 in the joint, and preventing the catheter 13 and the tool 14 from contacting these key parts.

[0078] The deployment and closing operation of the protective baffle 1 is precisely controlled by the controller 3. The controller 3 is lightweight and easy for doctors to operate on the operating table. It controls the opening and closing angles of the protective baffle and is electrically connected to the pusher 2. The pusher 2 helps doctors push the protective baffle 1 into or out of the knee joint by operating the handle 9, and receives feedback signals through the controller 3 to achieve precise control of the position and state of the baffle.

[0079] The device is lightweight and is particularly suitable for minimally invasive knee arthroscopy. Since memory metal material or piezoelectric material is used as the folding element 6, the device can be inserted into the joint through a smaller incision without affecting the surgical operation. The advantage of the device is that it can effectively protect the blood vessels and nerves in the knee joint to avoid damage during the operation, thereby ensuring the safety of the operation and the quality of the patient's postoperative recovery.

[0080] In the arthroscopic knee surgery vascular nerve protection device, the folding element can be made of the following specific metal materials to achieve deformation control. These materials have good memory or shape recovery capabilities and are suitable for the design requirements of the device:

[0081] 1. Nickel-titanium alloy (NiTi alloy)

[0082] Nickel-titanium alloy is one of the most commonly used memory metal materials, with good shape memory effect and superelasticity. It can undergo reversible deformation under certain temperature or electrical signal. In the knee arthroscopy surgical protection device, the nickel-titanium alloy folding element can be expanded or contracted by electrical heating or electrical signal control, and the state of the baffle can be precisely controlled.

[0083] 2. Copper-based memory alloy (CuAlNi alloy or CuZnAl alloy)

[0084] Copper-based shape memory alloy is a relatively economical shape memory alloy with low cost and high shape recovery force. It can also be used as a folding element in knee arthroscopy surgery devices. The folding baffle can be deformed under heating or electrical signals, which is suitable for delicate operations in medical equipment.

[0085] 3. Iron-based memory alloy (FeMnSi alloy)

[0086] Iron-based memory alloys have good strength and durability, while being able to recover their original shape under external stimuli. Although the shape memory effect of iron-based memory alloys is not as good as that of nickel-titanium alloys, they have higher mechanical properties and are suitable for more robust surgical instrument parts.

[0087] These metal materials can achieve the deformation and recovery of folding elements in knee arthroscopic surgical devices through external electrical signals or temperature control, helping the device to complete the protection of blood vessels and nerves.

[0088] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A vascular nerve protection device for knee arthroscopy surgery, characterized in that: include: A foldable protective baffle, which is a folding fan-shaped baffle, composed of a folding baffle and a fixed plate, wherein the fixed plate is fixed to both end surfaces of the folding plate, and a folding element is provided at the end of the protective baffle; A propeller, which is a thin and long rod, one end of which is connected to the inlet of the protective baffle, and the other end of which is provided with an operating handle, the length of which is greater than the length of the protective baffle, and the propeller moves along the axial direction of the protective baffle to move the position of the protective baffle; A controller is an electronic device, which is electrically connected to the folding element of the protective shell and the operating handle of the propeller, and controls the opening and closing angles of the protective baffle and the movement of the propeller.

2. The vascular nerve protection device for knee arthroscopy surgery as claimed in claim 1, characterized in that: The folding baffle is a piezoelectric material that deforms under the action of voltage or current.

3. The vascular nerve protection device for knee arthroscopy surgery as claimed in claim 1, characterized in that: The controller sends different electrical signals according to the needs during the operation to adjust the opening and closing angle and speed of the protective baffle.

4. The vascular nerve protection device for knee arthroscopy surgery as claimed in claim 1, characterized in that: The diameter of the protective baffle is less than 5 mm in the retracted state and greater than 10 mm in the expanded state.

5. The vascular nerve protection device for knee arthroscopy surgery as claimed in claim 1, characterized in that: The length of the protective baffle is between 5 cm and 10 cm.

6. The vascular nerve protection device for knee arthroscopy surgery as claimed in claim 1, characterized in that: include: A foldable protective baffle, which is designed in a folding fan shape, consists of a folding baffle and a fixed plate, wherein the fixed plate is fixed to both end surfaces of the folding baffle, and a folding element is provided at the end of the protective baffle; A pusher for inserting the protective baffle into the knee joint; a controller, electrically connected to the protective baffle and the propeller, for controlling the deformation of the folding element by sending electrical signals, thereby controlling the unfolding and closing of the protective baffle; Among them, when the controller sends an expansion signal, the folding element responds and generates an outward force, causing the folding baffle to expand outward to form a protective barrier to prevent the catheter and tools during the operation from touching the blood vessels and nerves; when the controller sends a closing signal, the folding element causes the folding baffle to contract inward, and the protective baffle is back in a closed and folded state for easy removal.

7. The vascular nerve protection device for knee arthroscopy surgery according to claim 6, characterized in that: The folding element is made of memory metal material or piezoelectric material, and is deformed when it receives an electrical signal sent by a controller, thereby controlling the expansion and closing of the protective baffle. The protective baffle, thruster and controller are lightweight in design and suitable for minimally invasive knee arthroscopic surgery. The protective baffle can be inserted into the joint through a small incision, thereby achieving efficient protection of blood vessels and nerves.

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