Debridement device for exposed wound surface of built-in object after cranioplasty

Abstract

The invention relates to the technical field of medical instruments, and provides a debridement device for an exposed wound surface of an implant after a skull plasty, the debridement device comprises a handle, a tube body, a debridement piece, a control mechanism and a flushing / negative pressure adsorption assembly, the tube body is rotatably connected with the handle, the debridement piece is detachably arranged at the far end of the tube body, the debridement piece can deviate relative to the radial direction of the tube body, and the control mechanism is arranged on the control mechanism. The control mechanism is operably arranged at the near end of the tube body, deformation holes distributed in the axial direction of the tube body are formed in the tube body, and the control mechanism is connected with the deformation holes through a transmission inhaul cable so that operation of an operator on the control mechanism can be synchronously transmitted to the deformation holes. The device can adapt to the curved surface appearance and the porous structure of skull implants such as a titanium mesh and a titanium plate, so that the debridement piece can be effectively attached to the inner side surface of the implants in the operation process and go deep into pores of the implants, attachments (such as fester, blood clots and necrotic tissues) are efficiently and thoroughly removed, and the debridement quality and the operation effect are remarkably improved.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, specifically a debridement device for the exposed wound surface of implants after cranioplasty. Background Technology

[0002] Following severe traumatic brain injury, intracranial tumor surgery, or decompressive craniectomy for intracranial hemorrhage, various degrees of skull defects often occur, seriously threatening the patient's brain safety and quality of life. To restore skull integrity, protect brain tissue, and improve appearance, cranioplasty is commonly used clinically for repair, with biocompatible metallic materials such as titanium mesh and titanium plates widely used as implant materials. However, cranioplasty also carries certain postoperative complication risks, among which implant exposure is one of the more serious complications. The occurrence of this complication may be related to various factors such as the patient's overall condition, scalp condition, surgical design and technique, and postoperative low intracranial pressure. Despite various preventative measures implemented in clinical practice, it is still difficult to completely avoid such situations.

[0003] In theory, once an implant becomes exposed, there is a risk of bacterial contamination, colonization, and secondary infection, especially with prolonged exposure, where the infection rate increases significantly. In this case, the implant becomes a potential source of infection. According to current clinical practice, it is generally recommended to remove the exposed implant, repair the wound, and then perform a second implantation surgery once the infection is controlled and local conditions permit. However, this approach has the following significant problems: patients need to undergo multiple surgeries, increasing physical trauma, financial burden, and psychological stress; multiple surgeries increase the risk of brain injury, especially since the brain tissue is already relatively vulnerable after the initial surgery; and the doctor-patient relationship is easily affected, as the multiple surgeries, long recovery period, and uncertain treatment outcomes can easily lead to dissatisfaction and questioning from patients and their families.

[0004] Therefore, wound debridement and repair while preserving the implants are of significant clinical importance. In recent years, some clinical studies and practices have attempted wound repair while preserving titanium mesh or plates, achieving some success (see Chu Wanli, Hao Daifeng, Zhao Jingfeng, et al., "Clinical Strategies for Preservation of Exposed Implants in Chronic Wounds and Wound Repair"). However, many challenges remain in practice, with difficult debridement being a key technical bottleneck restricting the implementation of this strategy.

[0005] To adapt to the physiological structure of the brain, implanted titanium meshes or plates are typically designed as spherical structures with a certain curvature to achieve good adhesion to the underlying dura mater. Simultaneously, to facilitate postoperative drainage and tissue integration, they often employ a porous mesh structure, as shown in the instruction manual. Figure 1The image on the right. While this structure offers clinical advantages, it also presents significant challenges in debridement, specifically in the following aspects: 1. Difficulty in debridement within cavities: Exposure of implants after cranioplasty is often accompanied by local hemorrhage and effusion, leading to the formation of potential cavities between the dura mater and the titanium mesh, as shown in the instruction manual. Figure 1 The left image shows the cavity. This cavity often accumulates pus, blood clots, and inflammatory granulation tissue, and is closely attached to the dura mater surface. Due to the dense pore design of the titanium mesh structure, ordinary debridement instruments cannot effectively reach and remove the contents of the cavity. Simultaneously, excessive pressure on the dura mater must be avoided, further increasing the difficulty of debridement. II. Limited Debridement of the Surface of the Implant: The porous structure of the titanium mesh allows for treatment of its exposed surface (near the scalp) using conventional debridement methods. However, its inner surface (near the dura mater) and the interior of the pores often adhere to contaminants such as necrotic tissue, pus, and blood clots, which are difficult to effectively reach and thoroughly remove with traditional debridement tools, thus becoming a potential source of infection. Currently, there is a lack of dedicated debridement devices for such implants in clinical practice. Debridement operations largely rely on traditional instruments, making it difficult to achieve efficient, thorough, and safe debridement. In view of the above problems, there is an urgent need to develop a debridement device for the exposed wound surface of implants after cranioplasty. Summary of the Invention

[0006] This invention provides a debridement device for exposed wounds after cranioplasty, aiming to solve the problems of inconvenience and poor flexibility in handling titanium mesh in existing technologies. Specific implementation methods are as follows: A debridement device for the exposed wound surface after cranioplasty, including a handle; A tube body, which is rotatably connected to a handle; A cleaning component, which is detachably mounted on the distal end of the tube body, is capable of radial displacement relative to the tube body; A control mechanism is operably disposed on the proximal end of the tube body, wherein the tube body is provided with deformation holes distributed along its axial direction, and the control mechanism is connected to the deformation holes via a transmission cable so that the operator's operation on the control mechanism is synchronously transmitted to the deformation holes. The control mechanism includes a first ball head, and the tube body is disposed in a first ball socket corresponding to the first ball head to form a ball joint connection with it. At least two transmission cables are provided, and the two transmission cables are respectively connected to the relative positions of the first ball head to construct a first position direction and a second position direction of the debridement component based on the deformation hole. A flushing / negative pressure adsorption assembly, wherein the tube body has an installation channel, the flushing / negative pressure adsorption assembly is disposed in the installation channel, and the flushing / negative pressure adsorption assembly is connected to the debridement component.

[0007] As a further embodiment of the present invention, the control mechanism further includes a trigger, which is disposed on the first ball head, and the tube body is provided with a guide rail corresponding to the trigger. The trigger is operably slidably disposed on the guide rail and can move in a first position direction and a second position direction.

[0008] As a further aspect of the present invention, the control mechanism further includes a locking member, which is operably disposed on the guide rail for limiting the trigger on the guide rail.

[0009] As a further aspect of the present invention, the tube body is provided with an elastic support member, which is connected to the first ball head and is used to ensure that the first ball head is always supported by the elastic support member when it changes direction.

[0010] As a further embodiment of the present invention, the distal end of the tube body is hinged to the debridement component, the deformation hole is formed on the second ball head, the debridement component is rotatably disposed in the deformation hole, the debridement component is provided with a third ball head corresponding to the second ball head, the third ball head is provided with a groove along its central axis, which is at least one slit penetrating along the axial direction of the third ball head, the outer diameter of the third ball head is changed by the elastic contraction of the groove, so as to realize the detachable connection between the third ball head and the second ball head.

[0011] As a further embodiment of the present invention, the third ball head is divided into hemisphere a and hemisphere b by a groove, and the hemisphere a and hemisphere b are connected by a connecting rod, wherein the central axis of the connecting rod is on the same straight line as the center of the third ball head; The connecting rod is a cylindrical structure with a diameter smaller than the opening diameter of the deformation hole, so as to allow the cleaning component to shift along the axial direction of the tube.

[0012] As a further embodiment of the present invention, a limiting groove is provided on the second ball head, the limiting groove extending from the opening of the second ball head toward its center, and a limiting block is provided on the third ball head corresponding to the limiting groove, the limiting block cooperating with the limiting groove to limit the rotation of the third ball head in the axial direction of the second ball head.

[0013] As a further embodiment of the present invention, the second ball head is provided with a relief groove, and at least two relief grooves are provided, the two relief grooves respectively corresponding to the offset paths of the cleaning member in the first position direction and the second position direction.

[0014] As a further embodiment of the present invention, the cleaning component is provided with fasteners, and the third ball head is provided with a through hole corresponding to the fastener. The third ball head achieves the contraction or expansion of the groove by cooperating with the fastener and the through hole.

[0015] As a further embodiment of the present invention, the debridement component has a flow channel, which is connected to the outside through an outlet. The flow channel is connected to the irrigation / negative pressure adsorption component through a serpentine tube to realize the delivery of irrigation fluid or the suction of waste fluid and tissue debris.

[0016] Due to the adoption of the above technical solutions, the beneficial technical effects of the present invention are as follows: 1. The present invention, through the offset setting between the debridement component and the tube body, can adapt to the curved shape and porous structure of intracranial implants such as titanium mesh and titanium plate. This allows the debridement component to effectively fit the inner surface of the implant during operation and penetrate deep into its pores, thereby achieving efficient and thorough removal of attached materials (such as pus, blood clots, necrotic tissue, etc.), thus significantly improving the quality of debridement and surgical results. 2. The control mechanism of the present invention is connected to the tube body by a ball joint structure and cooperates with the transmission cable to make the cleaning component rotate between the first position direction and the second position direction, thereby adapting to the cleaning needs of different angles and positions; 3. The debridement component of this invention achieves detachable connection with the tube body through the elastic fit structure of the third ball head and the deformation hole of the second ball head, thereby realizing independent cleaning and sterilization of the debridement component, effectively avoiding cross-infection, and thus improving the safety of the device in clinical use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the built-in object in the background art of this invention; Figure 2 This is a schematic diagram of a debridement device for the exposed wound surface of an implant after cranioplasty, according to a specific embodiment of the present invention. Figure 3 This is a cross-sectional view of a debridement device for the exposed wound surface of an implant after cranioplasty, according to a specific embodiment of the present invention. Figure 4 For the present invention Figure 3 Enlarged view of the structure of section A; Figure 5 For the present invention Figure 3 Enlarged view of the structure of section B; Figure 6 This is a schematic diagram of the drive mechanism and the tube body drive connection in a specific embodiment of the present invention; Figure 7 This is an exploded view of the connection between the debridement component and the tube body in a specific embodiment of the present invention; Figure 8 This is a cross-sectional view of the connection between the debridement component and the tube body in a specific embodiment of the present invention; Figure 9 This is a partial cross-sectional view of the debridement component in a specific embodiment of the present invention; Figure 10This is a partial schematic diagram of the flushing / negative pressure adsorption assembly in a specific embodiment of the present invention; Figure 11 This is a state diagram showing the state of the debridement component being offset relative to the tube body by the control mechanism in a specific embodiment of the present invention; Figure 12 This is a diagram showing the working state of the upward-pushing locking component in a specific embodiment of the present invention; Figure 13 This is a schematic diagram of the locking component in a specific embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Handle, 2. Tube body, 3. Wound cleaning component, 4. Irrigation / negative pressure adsorption assembly, 5. Control mechanism, 6. Elastic support component, 7. Motor, 8. Drive gear 11. First friction part, 21. First ball socket; 22. Mounting channel; 23. Guide rail; 24. Second ball socket; 25. Rack; 26. Driven gear; 27. Slide groove; 28. Clearance groove. 31. Hemisphere a, 32. Hemisphere b, 33. Connecting rod, 34. Groove, 35. Fastener, 36. Rod-shaped structure, 37. Brush layer, 38. Limiting block, 39. Through hole. 361. First pipe; 362. Adsorption chamber; 363. Adsorption pore; 364. Second pipe; 365. Liquid outlet. 41. Adsorption tube; 42. Flushing tube; 43. Main pipe. 51. Trigger; 52. Gear; 53. First ball head; 54. First position direction; 55. Second position direction; 56. Second ball head; 57. Limiting groove. 511. Second friction part, 541. First proximal sphere; 542. First transmission cable; 543. First distal sphere. 551. Second proximal sphere; 552. Second transmission cable; 553. Second distal sphere. 61. Support plate; 62. First universal joint fork; 63. Second universal joint fork; 64. Cross shaft; 65. Tension spring. 91. Locking slider; 92. Locking button; 93. Linkage rod; 94. Spring. Detailed Implementation

[0019] The specific embodiments of the present invention are described below with reference to the accompanying drawings and examples: It should be noted that the structures, proportions, sizes, etc. illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification, so that those skilled in the art can understand and read them, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0021] Combination Figures 2 to 13 As shown, this invention provides a debridement device for exposed wounds after cranioplasty, including a handle 1, a tube 2, a debridement component 3, a control mechanism 5, and an irrigation / negative pressure adsorption assembly 4. The handle 1 is for the doctor to hold, and its shape is modified according to the natural grip shape of the human hand, with an arc surface that naturally conforms to the thumb to reduce hand fatigue. A first friction part 11 is provided on the arc surface to ensure a stable and comfortable grip. The outer surface of the handle 1 is made of medical-grade silicone or thermoplastic elastomer (TPE) material, which provides a good tactile feel and increases friction to prevent hand slippage due to sweat during surgery. The tube 2 is rotatably connected to the handle 1, and the debridement component 3 is detachably mounted on the distal end of the tube 2. The debridement component 3 can be offset radially relative to the tube 2 to adapt to the debridement needs of the wound inside the titanium mesh.

[0022] In this embodiment, as Figure 6As shown, the tube body 2 serves as the connecting component between the handle 1 and the debridement piece 3. Its proximal end is rotatably connected to the handle 1. The rotatable connection between the tube body 2 and the handle 1 can be a common form in the prior art, such as a mechanical bearing-type rotating structure or a spherical friction fit structure, which will not be elaborated in this specification. To realize the rotation function of the tube body 2 along the central axis of the handle 1 and to further improve the operational flexibility and debridement effect of the debridement piece 3, this device also includes a drive mechanism on the handle 1. The drive mechanism includes a motor 7 and a drive gear 8 located at the output end of the motor 7. The tube body 2 is provided with a driven gear 26 meshing with the drive gear 8. Under the action of the motor 7, the drive gear is driven to rotate, thereby driving the driven gear 26 to rotate synchronously, thus driving the tube body 2 to rotate along the central axis of the handle 1. The automatic rotation driven by the motor 7 can continuously and evenly cover the debridement area outside the titanium mesh, avoiding the problems of blind spots or uneven debridement that exist in manual operation. The automatic rotation of the debridement piece 3 can also reduce the need for doctors to manually adjust the angle of the tube body 2, thereby reducing the fatigue caused by long-term surgical operations.

[0023] In this embodiment, the titanium mesh typically has a complex three-dimensional structure, including an uneven surface and various angles. By adjusting the angle of the cleaning component 3 and forming a "hook" shape with the tube body 2, compared to straight or planar cleaning components 3, the "hook" shape can contact the inner surface of the titanium mesh in multiple directions, thereby increasing the actual contact area and improving cleaning efficiency. Figure 3 , Figure 4 and Figure 5As shown, the tube body 2 has an installation channel 22, and the control mechanism 5 is operably disposed on the proximal end of the tube body 2. The tube body 2 is provided with deformation holes distributed along its axial direction. The control mechanism 5 is connected to the deformation holes through transmission cables so that the operator's operation on the control mechanism 5 is synchronously transmitted to the deformation holes. The control mechanism 5 includes a first ball head 53. The tube body 2 is disposed in a first ball socket 21 corresponding to the first ball head 53, which forms a ball joint connection with it. There are at least two transmission cables, which are respectively connected to the relative positions of the first ball head 53 to construct a first position direction 54 and a second position direction 55 for the debridement component 3 to deform based on the deformation holes. Specifically, the first ball head 53 is located at the control end of the control mechanism 5, forming a ball-and-socket joint with the first ball socket 21 on the tube body 2. This ball-and-socket joint includes the first ball head 53 and the first ball socket 21. The first ball-and-socket joint allows the control mechanism 5 to rotate and tilt in multiple degrees of freedom. Through the operator's operation of the control mechanism 5, the debridement component 3 can be switched between the first position direction 54 and the second position direction 55. The debridement component 3 is located on the distal end of the tube body 2, directly contacting and treating the exposed surface of the cranioplasty titanium mesh. The debridement component 3 is connected to the distal end of the tube body 2 by a ball joint. This ball joint is a second ball-and-socket joint, which includes a second ball head 56 and a second ball socket 24. The second ball-and-socket joint serves as the actuator of the control mechanism 5. It drives the transmission cable to work through the first ball-and-socket joint to adjust the tension of the two transmission cables, thereby causing the second ball socket 24 to deflect. This, in turn, causes the debridement component 3 connected to the second ball head 56 to shift. By adjusting the debridement component 3, the contact force between the debridement component 3 and the inner wound surface of the titanium mesh can be increased, thereby more effectively removing attached materials such as tissue debris, blood clots, or biofilms.

[0024] In one specific embodiment, to achieve precise control of the debridement component 3 in the first position direction 54 and the second position direction 55, the control mechanism 5 transmits the operator's movements by setting at least two transmission cables. The two transmission cables are a first transmission cable 542 and a second transmission cable 552, which are respectively connected to the first proximal ball 541 and the second proximal ball 551 of the first ball head 53. The first proximal ball 541 and the second proximal ball 551 are symmetrically arranged along the central axis of the first ball head 53. The other ends of the first transmission cable 542 and the second transmission cable 552 are respectively connected to the first distal ball 543 and the second distal ball 553 of the second ball socket 24. The first transmission cable 542 and the second transmission cable 552 can transmit the rotation direction of the first ball socket joint to the second ball socket joint. By controlling the tension difference between the first transmission cable 542 and the second transmission cable 552 through the control mechanism 5, the debridement component 3 can be switched between the first position direction 54 and the second position direction 55.

[0025] In one specific embodiment, the control mechanism 5 further includes a trigger 51, which has a second friction part 511 to provide contact friction with the operator, preventing slippage during operation and thus improving the stability and control accuracy of the operation. The trigger 51 is disposed on the first ball head 53 and integrally formed therewith. The tube body 2 has a guide rail 23 corresponding to the trigger 51 and can move along a set path under the guidance of the guide rail 23. The trigger 51 is operably slidably disposed on the guide rail 23 and can move in a first position direction 54 and a second position direction 55. When the operator moves the trigger 51, the trigger 51 slides along the guide rail 23, thereby causing the first ball head 53 to deflect. The deflection of the first ball head 53 is transmitted to the second ball socket 24 through the transmission cable connected to it (such as the first transmission cable 542 and the second transmission cable 552), thereby causing the cleaning component 3 to shift to the first position direction 54 or the second position direction 55 under the change of the tension of the transmission cable. This allows for the adjustment of the angle of the cleaning component 3 relative to the axis of the tube body 2, thereby improving the adaptability and flexibility of the cleaning process of the inner side of the titanium mesh.

[0026] To limit the movement of trigger 51, control mechanism 5 also includes locking element 9, such as... Figure 12 , Figure 13 As shown, the locking element 9 is located on the outside of the tube body 2 and is operably mounted on the guide rail 23 to fix the trigger 51 on the guide rail 23. The locking element 9 includes, but is not limited to, one or more combinations of locking sliders, knob locks or snap locks, to apply a fixing force to the trigger 51 when needed to prevent the cleaning element 3 from shifting during operation. In this embodiment, the locking component 9 includes a slidable locking slider 91, and its action is controlled by a locking button 92. The tube body 2 has a groove 27 corresponding to the locking slider 91, and the locking slider 91 is slidably disposed in the groove 27. The bottom surface of the locking slider 91 has a pressing surface, which abuts against the trigger 51. The locking slider 91 is driven to move by a connecting rod 93 linked to the locking button. A spring 94 is provided between the locking slider and the groove 27 of the tube body 2. The spring 94 presses the pressing surface of the locking slider 91 against the trigger 51. By pushing the locking button 92 upward, the locking button 92 drives the connecting rod 93 and the locking slider 91 to move. The spring 94 deforms and compresses, causing the pressing surface to move in the opposite direction to the trigger 51, thereby unlocking the trigger 51. When the locking button 92 is released, the spring 94 returns to its deformation and drives the locking slider 91 to move towards the trigger 51 and press against the trigger 51, thereby limiting the trigger 51 on the guide rail 23.

[0027] In one specific embodiment, the trigger 51 has multiple teeth 52, and the tube body 2 has a rack 25 corresponding to the teeth 52. The rack 25 extends along the length of the guide rail 23. During the sliding process, the trigger 51 generates friction through the meshing of the teeth 52 and the rack 25, thereby achieving uniform deflection of the first ball head 53. When the operator pushes or pulls the trigger 51, the trigger 51 slides along the guide rail 23, at which time the teeth 52 and the rack 25 mesh. During engagement, frictional resistance is generated between tooth 52 and rack 25. This frictional resistance can effectively reduce the sliding speed of trigger 51, thereby achieving uniform deflection of the first ball head 53. Through the meshing friction between tooth 52 and rack 25, trigger 51 slides at a uniform speed, avoiding sudden changes in the angle of the debridement component 3 due to excessively fast operation. This allows for precise control of the deflection angle of the debridement component 3. In addition, the existence of frictional resistance between tooth 52 and rack 25 can also effectively prevent trigger 51 from sliding due to accidental contact or vibration, thereby preventing unexpected deviation of the debridement component 3 and improving the safety and stability of the surgical procedure.

[0028] In this embodiment, the tube body 2 is provided with an elastic support 6, which is connected to the first ball head 53 to ensure that the first ball head 53 is always supported by the elastic support 6 when it changes direction. When the operator applies an operating force to the first ball head 53 through the control mechanism 5, causing it to deflect in multiple degrees of freedom, the elastic support 6 provides continuous support to the first ball head 53, preventing it from deflecting unexpectedly due to gravity or external forces in the absence of operation, and ensuring the stability of the cleaning component 3 at the set angle.

[0029] In one specific embodiment, the elastic support 6 includes a support plate 61 connected to the inner wall of the tube 2, a universal joint disposed between the support plate 61 and the first ball joint 53, and a tension spring 65 sleeved on the universal joint. The first universal joint fork 62 and the second universal joint fork 63 of the universal joint are respectively connected to the opposite surfaces of the first ball joint 53 and the support plate 61. The universal joint's cross shaft 64 is disposed between the two universal joint forks, transmitting power and allowing deflection. The universal joint's needle roller bearing is located between the cross shaft 64 journal and the universal joint fork hole, used to reduce friction and achieve smooth power transmission. The support plate 61 is a rigid structural component made of metal, and its shape is circular according to the internal space of the tube 2. When the operator pushes or pulls the trigger 51, the first ball joint 53 deflects in multiple directions. At this time, the universal joint allows the first ball joint 53 to remain connected to the support plate 61 and also allows for flexible rotation in different directions. In this embodiment, the distal end of the tube body 2 is hinged to the debridement component 3. A deformation hole is formed on the second ball head 56, and the debridement component 3 is rotatably disposed in the deformation hole. The debridement component 3 is provided with a third ball head corresponding to the second ball head 56. The third ball head has a groove 34 opened along its central axis, which is at least one slit extending along the axial direction of the third ball head. The outer diameter of the third ball head is changed by the elastic contraction of the groove 34, so as to realize the detachable connection between the third ball head and the second ball head 56. The second ball head 56 is located at the distal end of the tube body 2, and its shape matches the third ball head, forming a tight and detachable mating structure. The deformation hole size of the second ball head 56 is smaller than the initial outer diameter of the third ball head, so that the third ball head enters and retracts from the opening of the second ball head 56. Since the groove 34 gives the third ball head a certain elastic deformation capability, it can undergo radial contraction when subjected to external force, thereby changing its outer diameter. Therefore, through the elastic contraction of the groove 34, the third ball head can be easily inserted into or pulled out of the second ball head 56, thereby realizing the quick assembly and disassembly function with the second ball head 56.

[0030] In one specific embodiment, such as Figure 7 and Figure 8As shown, the third ball head is divided into hemispherical head a31 and hemispherical head b32 by a slot 34. Hemispherical head a31 and hemispherical head b32 are connected by a connecting rod 33. The central axis of the connecting rod 33 is on the same straight line as the center of the third ball head. The connecting rod 33 is a cylindrical structure with a diameter smaller than the opening diameter of the deformation hole to allow the cleaning component 3 to shift axially along the tube body 2. Hemispherical head a31 and hemispherical head b32 are two independent but interconnected parts formed by the slot 34. Both hemispherical head a31 and hemispherical head b32 have a certain rigidity and can move relative to each other when subjected to external force. The slot 34 passes through the third ball head along its axial direction, allowing hemispherical head a31 and hemispherical head b32 to adjust their overall outer diameter through elastic deformation, thereby achieving a detachable connection with the second ball head 56. Furthermore, the diameter of the connecting rod 33 is smaller than the opening diameter of the deformation hole on the cleaning member 3, thus allowing the cleaning member 3 to shift axially along the second ball head 56 during operation to accommodate cleaning needs at different angles and positions. In specific applications, the third ball head is aligned with the opening of the second ball head 56, and appropriate pressure is applied, causing the hemispheres a31 and b32 to reduce their outer diameter through the elastic contraction of the slot 34. Once the second ball head 56 is fully inserted, the pressure is released, and the hemispheres a31 and b32 return to their original shape and are locked within the deformation hole of the second ball head 56. At this point, the second ball head 56 and the third ball head form a stable hinged connection, allowing the cleaning member 3 to be adjusted in angle within a certain range. The operator adjusts the angle of the cleaning component 3 through the control mechanism 5. During this process, the connecting rod 33 moves freely in the deformation hole to ensure that the cleaning component 3 can be offset along the axial direction of the tube body 2. By adjusting the tension of the transmission cable, the cleaning component 3 can be offset in different directions as needed, thereby achieving effective cleaning of the wound surface inside the titanium mesh.

[0031] In one specific embodiment, the second ball head 56 is provided with a limiting groove, which extends from the opening of the second ball head 56 toward its center. The third ball head is provided with a limiting block 38 corresponding to the limiting groove. The limiting block 38 cooperates with the limiting groove to limit the rotation of the third ball head in the axial direction of the second ball head 56. The limiting block 38 is provided on the outer wall of the third ball head and located on the equator of the third ball head (i.e., along the direction of the maximum diameter of the third ball head). The limiting block 38 corresponds to the limiting groove, and its shape matches the limiting groove. It can be a rectangular or trapezoidal shape that is embedded in the limiting groove. Its size is slightly smaller than the limiting groove to ensure smooth insertion and removal operations. After the limiting block 38 is embedded in the limiting groove, it can effectively prevent the third ball head from rotating in its axial direction, thereby preventing the cleaning component 3 from rotating and enhancing the stability of the cleaning component 3, avoiding displacement or shaking caused by external forces.

[0032] In one specific embodiment, the cleaning component 3 is provided with a fastener 35, and the third ball head has a through hole 39 corresponding to the fastener 35. The third ball head achieves the contraction or expansion of the slot 34 through the cooperation of the fastener 35 and the through hole. The fastener 35 is connected to the connecting rod 33. The fastener 35 can be a mechanical fastening structure such as a screw or a knob-type locking rod. The through hole 39 is provided on the connecting rod 33 corresponding to the fastener 35. The through hole 39 has an internal thread that cooperates with the fastener 35. Through the cooperation of the fastener 35 and the through hole 39, radial pressure is applied to the connecting rod 33, thereby further applying clamping force to the hemispheres a31 and b32, achieving the contraction or release of the slot 34. During connection, the operator tightens the fastener 35, which enters the through hole 39 through the threaded engagement and applies pressure to the connecting rod 33. The pressure is transmitted through the connecting rod 33 to the hemispheres a31 and b32, bringing them closer together. As a result, the groove 34 is compressed, and the overall outer diameter of the third ball head is reduced. At this time, the third ball head can be pulled out (disassembled) from the second ball head 56, or its locking force with the ball socket can be increased in the installed state.

[0033] In one specific embodiment, the second ball head 56 is provided with a relief groove 28. At least two relief grooves 28 are provided, each corresponding to the offset path of the cleaning member 3 in the first position direction 54 and the second position direction 55, respectively. Preferably, two relief grooves 28 are provided, located on both sides of the second ball head 56 and symmetrically distributed on both sides of the central axis of the second ball head 56. The relief groove 28 is an arc-shaped groove structure extending outward along the edge of the opening of the second ball head 56. Its length and width can be selected according to the maximum deflection angle of the cleaning member 3. The two relief grooves 28 correspond to the offset paths of the cleaning member 3 in the first position direction 54 and the second position direction 55, respectively, to ensure that the deflection action of the cleaning member 3 in both directions is unimpeded.

[0034] In one specific embodiment, the debridement component 3 further includes a rod-shaped structure 36 connected to the connecting rod 33. The outer wall of the rod-shaped structure 36 is covered with a brush layer 37, which is used to clean the wound surface. The rod-shaped structure 36 serves as a support structure for the brush layer 37, guiding the brush layer 37 to the target cleaning area and also enhancing the overall structural strength of the debridement component 3. Both the outer wall of the rod-shaped structure 36 and the brush layer 37 are made of flexible materials, such as medical silicone, which have good cleaning performance and do not damage the surface of the titanium mesh. During the debridement process, the brush layer 37 can gently brush the inner wall of the titanium mesh, the edges of the wound, and other areas to remove residual tissue, blood clots, or foreign objects.

[0035] In this embodiment, as Figure 3As shown, in order to improve the wound cleaning effect of the titanium mesh, this device is also equipped with a rinsing / negative pressure adsorption component 4. The tube body 2 has an installation channel 22. The rinsing / negative pressure adsorption component 4 is located in the installation channel 22. The rinsing / negative pressure adsorption component 4 is connected to the wound cleaning component 3 to realize the delivery of rinsing fluid or the extraction of waste fluid.

[0036] In one specific embodiment, such as Figure 9 As shown, the debridement component 3 has a flow channel that communicates with the outside through an outlet. The flow channel is connected to the irrigation / negative pressure adsorption assembly 4 through a serpentine tube to facilitate the delivery of irrigation fluid or the suction of waste fluid and tissue debris. The irrigation / negative pressure adsorption assembly 4 includes a main pipe 43 and a first serpentine tube 41 and a second serpentine tube 42 respectively disposed on the main pipe 43. The main pipe 43 serves as the main transmission channel of the irrigation / negative pressure adsorption assembly 4, responsible for connecting external equipment (such as fluid supply equipment or negative pressure equipment) to the first serpentine tube 41 and the second serpentine tube 42. The first serpentine tube 41 and the second serpentine tube 42 extend outward from the tube end of the main pipe 43 and connect to the debridement component 3. Two flow channels are provided on the debridement component 3. The first channel 361 connects to the first serpentine tube 41, and the second channel 364 connects to the second serpentine tube 42. The first channel 361 connects to the first serpentine tube 41 and is used to transfer the negative pressure generated by the external negative pressure device to the debridement component 3. The debridement component 3 has an adsorption chamber 362 connected to the first channel 361 and multiple adsorption holes 363. The multiple adsorption holes 363 are spaced apart along the circumference of the rod-shaped structure 36 and directly connected to the adsorption chamber 362, used to absorb waste fluid or tissue debris near the wound surface. The second channel 364 connects to the second serpentine tube 42 and is used to deliver the irrigation fluid provided by the external fluid supply device to the debridement component 3. The debridement component 3 also has an outlet hole 365 connected to the second channel 364. The outlet hole 365 is located on the side wall of the rod-shaped structure 36 and forms a certain angle with the central axis of the rod-shaped structure 36 so that the liquid can be effectively rinsed onto the wound surface.

[0037] In one specific embodiment, such as Figure 10 As shown, the debridement component 3 is detachably connected to the first serpentine tube 41 and the second serpentine tube 42. The first conduit 361 and the second conduit 364 of the debridement component 3 are respectively connected to the first serpentine tube 41 and the second serpentine tube 42 via quick connectors. The quick connectors can be threaded, snap-fit, or other quick-connect structures suitable for the surgical environment. The connection structure is existing technology, and its specific structural principle will not be described in detail in this specification.

[0038] In this embodiment, a snap-fit ​​connection (not shown in the figure) is used. The snap-fit ​​connection includes snap-fit ​​structures at the ends of the first serpentine tube 41 and the second serpentine tube 42. These structures can be elastic snaps, rotary snaps, or press-fit snaps. Corresponding slots are provided at the inlets of the first pipe 361 and the second pipe 364 of the cleaning component 3. Quick connection and disconnection are achieved by pressing and releasing the snaps. Furthermore, to ensure no leakage occurs during liquid transmission, a sealing ring or O-ring is provided at the quick connector to provide good sealing performance. The cleaning component 3 is detachably connected to the tube body 2, and each component can be independently cleaned, disinfected, or replaced, reducing the risk of cross-infection and extending the service life of the device.

[0039] Many other changes and modifications can be made without departing from the concept and scope of this invention. It should be understood that this invention is not limited to the specific embodiments, and the scope of this invention is defined by the appended claims.

Claims

1. A debridement device for the exposed wound surface after cranioplasty, characterized in that, Including the handle (1); The tube body (2) is rotatably connected to the handle (1); The cleaning component (3) is detachably disposed on the distal end of the tube body (2), and the cleaning component (3) is capable of being offset radially relative to the tube body (2); A control mechanism (5) is operably disposed on the proximal end of the tube body (2), wherein the tube body (2) is provided with deformation holes distributed along its axial direction, and the control mechanism (5) is connected to the deformation holes by a transmission cable so that the operation of the operator on the control mechanism (5) is synchronously transmitted to the deformation holes; The control mechanism (5) includes a first ball head (53), and the tube body (2) is located in a first ball socket (24) corresponding to the first ball head (53) to form a ball joint connection with it. At least two transmission cables are provided, and the two transmission cables are respectively connected to the relative positions of the first ball head (53) to construct a first position direction (54) and a second position direction (55) of the debridement component (3) based on the deformation hole. The flushing / negative pressure adsorption assembly (4) has an installation channel (22) in the tube body (2), and the flushing / negative pressure adsorption assembly (4) is disposed in the installation channel (22). The flushing / negative pressure adsorption assembly (4) is connected to the debridement component (3).

2. The debridement device for exposed wounds after cranioplasty with implants as described in claim 1, characterized in that, The control mechanism (5) further includes a trigger (51), which is located on the first ball head (53). The tube body (2) is provided with a guide rail (23) corresponding to the trigger (51). The trigger (51) is operably slidably located on the guide rail (23) and can move in the first position direction (54) and the second position direction (55).

3. The debridement device for exposed wounds after cranioplasty with implants as described in claim 2, characterized in that, The control mechanism (5) further includes a locking element operably disposed on the guide rail (23) for limiting the trigger (51) on the guide rail (23).

4. The debridement device for exposed wounds after cranioplasty with implants as described in claim 3, characterized in that, The tube body (2) is provided with an elastic support (6), which is connected to the first ball head (53) so that it is always supported by the elastic support (6) when the first ball head (53) changes direction.

5. The debridement device for exposed wounds after cranioplasty with implants as described in claim 1, characterized in that, The distal end of the tube (2) is hinged to the cleaning component (3). The deformation hole is formed on the second ball head (56). The cleaning component (3) is rotatably disposed in the deformation hole. The cleaning component (3) is provided with a third ball head corresponding to the second ball head (56). The third ball head has a slot (34) along its central axis, which is at least one slit that passes through the axial direction of the third ball head. The outer diameter of the third ball head is changed by the elastic contraction of the slot (34) to realize the detachable connection between the third ball head and the second ball head (56).

6. The debridement device for exposed wounds after cranioplasty with implants as described in claim 5, characterized in that, The third ball head is divided into hemisphere a (31) and hemisphere b (32) by a slot (34). The hemisphere a (31) and hemisphere b (32) are connected by a connecting rod (33). The central axis of the connecting rod (33) is on the same straight line as the center of the third ball head. The connecting rod (33) is a cylindrical structure with a diameter smaller than the opening diameter of the deformation hole, so as to allow the cleaning component (3) to shift axially along the tube body (2).

7. The debridement device for the exposed wound surface after cranioplasty with implants as described in claim 6, characterized in that, The second ball head (56) is provided with a limiting groove, which extends from the opening of the second ball head (56) toward its center. The third ball head is provided with a limiting block (38) corresponding to the limiting groove. The limiting block (38) cooperates with the limiting groove to limit the rotation of the third ball head in the axial direction of the second ball head (56).

8. A debridement device for exposing the wound after cranioplasty with implants, as described in claim 5, characterized in that, The second ball head (56) is provided with a relief groove (28), and there are at least two relief grooves (28). The two relief grooves (28) correspond to the offset paths of the cleaning component (3) in the first position direction (54) and the second position direction (55), respectively.

9. A debridement device for exposing the wound after cranioplasty with implants, as described in claim 5, characterized in that, The cleaning component (3) is provided with a fastener (35), and the third ball head is provided with a through hole (39) corresponding to the fastener (35). The third ball head achieves the contraction or expansion of the slot (34) through the cooperation of the fastener (35) and the through hole.

10. A debridement device for exposing the wound after cranioplasty with implants, as described in claim 1, characterized in that, The debridement component (3) has a flow channel, which is connected to the outside through an outlet. The flow channel is connected to the rinsing / negative pressure adsorption component (4) through a serpentine tube to realize the delivery of rinsing fluid or the suction of waste fluid and tissue debris.

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