Method for disinfecting bone tissue and disinfecting and rinsing apparatus

Abstract

The application relates to the technical field of cleaning and disinfection, and discloses a bone tissue disinfection method and a disinfection and flushing device, which comprise a cabinet body, a control panel fixedly installed on the upper portion of the cabinet body and a sealed box door hinged to the bottom of the cabinet body. The cabinet body is completely sealed after the sealed box door is closed. A spraying tray is fixedly installed at the bottom side of the disinfection cavity of the cabinet body. A bone tissue placing basket is slidably arranged above the spraying tray. Two groups of rotatable spraying arm assemblies are symmetrically arranged at the top inner side of the disinfection cavity of the cabinet body. The control panel is electrically connected with a liquid supply system and a rotatable spraying arm assembly driving mechanism. The bone tissue disinfection method and the disinfection and flushing device can stably clamp various types of ex vivo bone tissues in tubular, block and fragment forms through layered cross limiting support flaps and vertical positioning insertion rods. The bone blocks cannot slide and stack, the bone blocks are prevented from sliding and falling off, and the bone blocks are prevented from being mutually shielded to form flushing dead angles.

Description

Technical Field

[0001] This invention relates to the field of cleaning and disinfection technology, specifically to a method for disinfecting bone tissue and a disinfection rinsing device. Background Technology

[0002] In orthopedic surgery, autologous bone and allogeneic bone transplantation are the core methods for repairing bone defects. During the harvesting, transportation and storage of excised bone tissue, it may be contaminated with blood, soft tissue debris, epidermal bacteria and environmental microorganisms. If it is not thoroughly disinfected and rinsed before being implanted into the human body, it is very easy to cause postoperative wound infection, osteomyelitis and rejection inflammation. In severe cases, it may lead to surgical failure and secondary debridement surgery, which greatly increases the patient's pain and medical risks.

[0003] Medical staff repeatedly rinsed the bone fragments with hand-held rinsing syringes. The unstable water pressure made it difficult to remove dirt and bacteria hidden in bone crevices, deep within bone trabeculae, and in the medullary cavity. The low standardization of manual operation resulted in significant differences in rinsing time and intensity among different medical staff, making the disinfection effect uncontrollable. At the same time, the lack of unified collection of rinsing waste liquid easily led to cross-contamination of the operating table and the floor, posing a high risk of exposure to pathogens to medical staff.

[0004] Traditional disinfection cabinets have fixed spray arms at the bottom, which can only spray upwards in one direction. This makes it impossible to form a wrapping water flow to the top and sides of the bone tissue in the basket, resulting in insufficient rinsing and disinfection of the upper surface and side end of the bone pieces. Furthermore, the spray pipes lack a rotating hinge structure, creating blind spots in the spray coverage area. This leads to extremely poor uniformity in disinfection when large bone segments or multiple pieces of bone tissue are processed simultaneously.

[0005] Conventional basketball hoops only have simple vertical bars for restraint, allowing the bone blocks to easily slide and stack. The porous bone tissue at the bottom completely adheres to the basket's base, preventing water from flowing through the bottom of the bone blocks to create convection for rinsing. Without a tiered, raised, and perforated flow-guiding structure, rinsing wastewater accumulates at the bottom of the bone blocks, and bacteria and debris repeatedly adhere to the bone tissue, significantly reducing disinfection and rinsing efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a method and equipment for disinfecting bone tissue, addressing the problems mentioned in the background art. Conventional baskets with only simple vertical bars for restraint allow bone blocks to slide and stack easily. The porous bone tissue bottom is completely flush against the basket's base, preventing water flow from penetrating the bottom surface of the bone blocks to create convection for rinsing. Without a layered, raised, and perforated flow-guiding structure, rinsing wastewater accumulates at the bottom of the bone blocks, leading to repeated adhesion of bacteria and debris to the bone tissue, significantly reducing disinfection efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for disinfecting bone tissue, comprising the following steps:

[0008] Step 1: Pre-treatment and decontamination. The operator first removes the soft tissue, fascia, bone marrow, and blood clots from the bone surface. The scalpel peels off the attached muscles and periosteum. Then, the bone marrow cavity is flushed with physiological saline under high pressure. The medullary cavity curette is used to clean the intramedullary fat and hematopoietic tissue. The bone fragments are washed with running water to remove grease and dirt, and then trimmed into bone segments of the required size.

[0009] Step 2: Auxiliary disinfection. Before disinfection, the pre-treated bone tissue is first soaked in anhydrous ethanol to dissolve the fat in the bone, then rinsed repeatedly with sterile saline until there is no floating oil, and finally soaked at room temperature with nonionic surfactant to remove cell debris.

[0010] Step 3: Disinfection and rinsing. The operator soaks the bone tissue in medical ethanol, then in povidone-iodine, and finally puts the pre-treated bone tissue into the disinfection and cleaning equipment, and rinses it thoroughly with sterile saline solution multiple times to remove residual disinfectant.

[0011] Furthermore, a bone tissue disinfection and rinsing device, which adopts the disinfection and cleaning device of step three of the bone tissue disinfection method, includes a cabinet and a control panel fixedly installed on the upper part of the cabinet. The cabinet forms a closed disinfection chamber, and a sealed door is hinged to the bottom of the cabinet. When the sealed door is closed, the cabinet is completely sealed.

[0012] A spray tray is fixedly installed on the bottom side of the disinfection chamber of the cabinet. A bone tissue placement basket is slidably mounted on the top of the spray tray. Two sets of rotatable spray arm assemblies are symmetrically mounted on the inner top of the disinfection chamber of the cabinet. The control panel is electrically connected to the liquid supply system and the drive mechanism of the rotatable spray arm assembly, and is used to set the rinsing time, spray water pressure, disinfectant ratio, spray arm rotation angle and disinfection program.

[0013] Furthermore, the spray tray includes a base frame, diverting spray channels, a perforated raised pad, and support strips. The base frame is internally divided into several independent diverting spray channels, and support strips are spaced above the diverting spray channels. The perforated raised pad is detachably laid on the support strip. The base frame is fixed to the bottom of the disinfection chamber of the cabinet. Multiple independent diverting spray channels are integrally formed inside, and each channel corresponds to a row of positioning rod components in the basket to achieve zoned flow guidance. The support strip is horizontally erected above the base frame, and the perforated raised pad is laid flat on the top surface of the support strip, forming a lower permeable gap between the perforated raised pad and the base frame.

[0014] Furthermore, the diversion spray channels are independent flow-guiding grooves, with each channel corresponding to a set of positioning rod assemblies. Both ends of the diversion spray channels connect to the waste liquid collection chamber at the bottom of the cabinet. The perforated raised pad is filled with permeable perforations, forming a lower flow-guiding gap between the perforated raised pad and the support strip. During bone tissue rinsing, the rinsing fluid flows downwards through the gaps in the supporting base plate and the gaps in the bone tissue, falling onto the perforated raised pad. The water flows through the permeable holes of the perforated raised pad into the lower gap, quickly converging into the diversion spray channels. The diversion spray channels adopt an inclined flow-guiding design at both ends, allowing waste liquid to quickly converge towards the waste liquid chamber at the bottom of the cabinet, preventing water accumulation on the tray surface. The independent zoned channels prevent the accumulation of large amounts of waste liquid on one side, which could lead to localized water pressure backflow, ensuring smooth water flow under each set of bone blocks and preventing secondary pollution caused by the accumulation of dirt and bacteria on the bottom surface of the bone tissue.

[0015] Furthermore, the rotatable spray arm assembly includes a cavity fixing joint, a rotating hinge connecting rod, a water supply hose, and a spray head. The cavity fixing joint is fixed to the inner wall of the cabinet, and the cavity fixing joint is movably connected to the spray head via the rotating hinge connecting rod. The water supply hose connects the cavity fixing joint and the spray head, and this water supply hose is externally connected to a disinfection and rinsing liquid supply system. After the bone tissue is placed inside the metal frame, the operator closes the sealed cabinet door. After closing, the silicone sealing ring at the edge of the door presses against the end face of the cabinet, completely sealing the disinfection chamber, preventing the wastewater and microbial aerosols generated by the spray from diffusing outwards. The cavity fixing joint is pre-embedded and fixed to the inner wall of the top of the cabinet. The fluid channel is opened inside and connected to the external disinfection and rinsing fluid supply pipeline. Physiological saline and disinfectant are introduced into the rotating hinge rod. The rotating hinge rod has a built-in double universal shaft and a micro drive motor. It receives electrical signals from the control panel and synchronously performs up and down swinging and horizontal circular rotation. The water supply hose is made of flexible and pressure-resistant material. It follows the full-angle twisting and swinging of the spray head without bending or blocking the fluid channel, and continuously and stably delivers the rinsing fluid.

[0016] Furthermore, the rotating hinge link is a dual-axis universal hinge structure, and the water delivery hose is a flexible, pressure-resistant silicone tube, adapted to the full-angle rotation of the spray head without bending or clogging. The end face of the spray head has multi-directional spray micro-holes, which can simultaneously spray disinfectant rinsing solution downwards and obliquely. The end face of the spray head is distributed with multi-directional inclined spray micro-holes, spraying out a fan-shaped high-pressure water curtain. During the coarse rinsing stage, the spray head swings significantly to expand the spray coverage area and remove large pieces of dirt. During the disinfectant stage, the spray head rotates at a low speed, and the water curtain continuously wraps around the top surface, both sides, and bone gaps of the bone tissue. The disinfectant solution fully penetrates the trabeculae and deep medullary cavity. During the fine rinsing stage, the water pressure is increased, and the entire area is rotated to rinse away residual disinfectant.

[0017] Furthermore, the bone tissue placement basket includes a positioning slide rail, a metal frame, a positioning sliding wheel assembly, a supporting base plate, and positioning rod assemblies. The positioning sliding wheel assembly is fixedly installed on the outer walls of both sides of the metal frame. The positioning slide rail is set on the inner wall of the disinfection chamber of the cabinet corresponding to the positioning sliding wheel assembly. The supporting base plate is fixedly connected to the bottom of the metal frame, and several positioning rod assemblies are arranged in a vertical array on the supporting base plate. When the operator opens the sealed cabinet door, the sealed cabinet door folds downward along the bottom hinge axis without upward obstruction or interference. The positioning slide rail is fixed to the left and right inner walls of the disinfection chamber of the cabinet. The positioning sliding wheel assembly is assembled on both sides of the metal frame, and the rollers are engaged in the positioning slide rail. The operator smoothly pulls the basket outward to load the material and pushes it inward to the disinfection station. The rollers limit the basket to prevent it from shifting left or right or tipping over.

[0018] Furthermore, the positioning sliding wheel assembly includes silent sliding rollers, and the positioning slide rail is an inwardly recessed limiting groove. The bone tissue placement basket is pulled in and out of the cabinet's disinfection chamber via the positioning sliding wheel assembly along the positioning slide rail. After being pulled out, the positioning sliding wheel assembly engages to limit and prevent the basket from shifting. The metal frame is a hollow metal frame with no enclosed baffles on all sides, allowing side spray water to directly pass through the frame to rinse the sides of the bone tissue. A supporting base plate is welded to the bottom, and the supporting base plate is covered with long, permeable slits, allowing the falling rinsing liquid to directly pass through the base plate into the spray tray below.

[0019] Furthermore, the positioning insert assembly includes a base plate mounting seat, a positioning insert body, a limiting end, a limiting support wing, and a wing fixing ring. The base plate mounting seat is fixed to the surface of the supporting base plate. The positioning insert body is vertically fixedly installed at the center of the base plate mounting seat. The limiting end is provided at the top of the positioning insert body. The positioning insert body is layered and fixed to the limiting support wing through the wing fixing ring. Multiple sets of positioning insert assemblies are arrayed on the supporting base plate as dedicated limiting tooling for bone tissue. The base plate mounting seat is threaded to the supporting base plate, and the inserts can be detached and replaced to adapt to different sizes of bone tissue. The positioning insert body is vertically upward, and the diameter of the limiting end at the top is enlarged to prevent the bone block from sliding upward and detaching from the insert.

[0020] Furthermore, the positioning insert assembly includes at least two layers of limiting support wings, with the upper and lower layers arranged in a cross-shaped staggered pattern. The edges of the limiting support wings are rounded and chamfered. A permeable drainage gap is reserved between the limiting support wings and the supporting base plate. The diameter of the limiting end is larger than the diameter of the main body of the positioning insert, used to restrict the upward slippage of bone tissue. The wing fixing rings are layered and sleeved on the insert body, with each layer fixing the cross-shaped staggered limiting support wings. The bone blocks can be locked between two layers of wings, limited vertically and horizontally, preventing them from tipping over or stacking. A permeable gap is reserved between the wings, allowing the rinsing fluid to pass through the wings and contact the upper and lower surfaces of the bone blocks, forming a vertical convection rinsing effect. During loading, tubular and block-shaped bones are vertically inserted into the main body of the positioning insert, with long and short bones clamped in layers. A spray gap is reserved between the bones to ensure that each piece of bone tissue is exposed to multi-angle spray water flow.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (i) The bone tissue disinfection method and disinfection rinsing equipment adopts a rotatable spray arm assembly with a universal rotating hinge. The spray nozzle can swing and rotate at multiple angles throughout the entire area to form a wrap-around water curtain, which solves the defects of traditional fixed spraying that only rinses in one direction and has blind spots for disinfection on the sides and top of bone tissue. The disinfectant solution can fully penetrate the porous bone trabeculae and deep medullary cavity, greatly improving the disinfection effect of deep bacteria.

[0023] (ii) The bone tissue disinfection method and disinfection rinsing equipment, with layered cross-shaped limiting support wings and vertical positioning rods, can firmly clamp various types of excised bone tissues such as tubular, block, and fragmented tissues. The bone pieces will not slide or stack, avoiding the formation of rinsing dead corners by the bone pieces blocking each other. The limiting end prevents the bone pieces from slipping and falling off, reducing operation losses.

[0024] (III) The bone tissue disinfection method and disinfection rinsing equipment have a double-layer permeable drainage structure with a supporting base plate and a hollow raised pad. The bottom of the bone tissue is completely suspended, and the rinsing liquid can form a convection rinsing from top to bottom and from bottom to top. The sewage is quickly guided downward and will not accumulate at the bottom of the bone block to cause secondary adhesion of bacteria and blood clots.

[0025] (iv) The bone tissue disinfection method and disinfection rinsing equipment, with the sealed box door and cabinet forming a completely sealed disinfection chamber, prevents the bacterial sewage and microbial aerosols generated by the spray from spreading outward, avoiding cross-infection of the operating table and medical staff, and greatly reducing the risk of nosocomial infection.

[0026] (v) The bone tissue disinfection method and disinfection rinsing equipment are flexible water delivery hoses that can be adapted to the full-angle movement of the spray head, eliminating the problem of water blockage due to pipe bends. The water pressure is stable throughout the spray process, and the water pressure is adjustable for the coarse rinsing, disinfection, and rinsing processes, making it suitable for bone tissues with different levels of contamination. The two sets of symmetrical spray arms work synchronously, and the spray coverage is uniform when multiple pieces of bone tissue in the basket are treated simultaneously. Multiple sections of bone tissue can be disinfected in a single batch, improving the efficiency of clinical treatment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an internal schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is an internal schematic diagram of the cabinet structure of the present invention;

[0030] Figure 4 This is an enlarged schematic diagram of structure A of the present invention;

[0031] Figure 5 This is a schematic diagram of the bone tissue placement basket structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the spray tray structure of the present invention;

[0033] Figure 7 This is a cross-sectional schematic diagram of the spray tray structure of the present invention;

[0034] Figure 8 This is a disassembled schematic diagram of the bone tissue placement basket structure of the present invention;

[0035] Figure 9 This is a disassembled schematic diagram of the positioning rod assembly structure of the present invention;

[0036] Figure 10 This is an enlarged schematic diagram of structure B of the present invention;

[0037] Figure 11 This is a flowchart illustrating the bone tissue disinfection method of the present invention.

[0038] In the diagram: 1. Cabinet; 2. Control panel; 3. Sealed door; 4. Spray tray; 41. Base frame; 42. Diverted spray channel; 43. Hollowed-out raised pad; 44. Support bar; 5. Rotatable spray arm assembly; 51. Cavity fixing joint; 52. Rotary hinge connecting rod; 53. Water supply hose; 54. Spray nozzle; 6. Bone tissue placement basket; 61. Positioning slide rail; 62. Metal frame; 63. Positioning sliding wheel assembly; 64. Bearing base plate; 65. Positioning insert rod assembly; 651. Limiting support wing; 652. Base plate mounting seat; 653. Positioning insert rod body; 654. Limiting end; 655. Wing fixing ring. Detailed Implementation

[0039] Example 1, as Figure 11 As shown, the present invention provides a technical solution: a method for disinfecting bone tissue, comprising the following steps:

[0040] Step 1: Pre-treatment and decontamination. The operator first removes the soft tissue, fascia, bone marrow, and blood clots from the bone surface. The scalpel peels off the attached muscles and periosteum. Then, the bone marrow cavity is flushed with physiological saline under high pressure. The medullary cavity curette is used to clean the intramedullary fat and hematopoietic tissue. The bone fragments are washed with running water to remove grease and dirt, and then trimmed into bone segments of the required size.

[0041] Step 2: Auxiliary disinfection. Before disinfection, the pre-treated bone tissue is first soaked in anhydrous ethanol to dissolve the fat in the bone, then rinsed repeatedly with sterile saline until there is no floating oil, and finally soaked at room temperature with nonionic surfactant to remove cell debris.

[0042] Step 3: Disinfection and rinsing. The operator soaks the bone tissue in medical ethanol, then in povidone-iodine, and finally puts the pre-treated bone tissue into the disinfection and cleaning equipment, and rinses it thoroughly with sterile saline solution multiple times to remove residual disinfectant.

[0043] Example 2, based on Example 1, such as Figures 1 to 7 As shown, a further bone tissue disinfection and rinsing device, which adopts the disinfection and cleaning device of step three of the bone tissue disinfection method, includes a cabinet 1 and a control panel 2 fixedly installed on the upper part of the cabinet 1. The cabinet 1 forms a closed disinfection chamber inside, and a sealing door 3 is hinged to the bottom of the cabinet 1. When the sealing door 3 is closed, the cabinet 1 is completely sealed.

[0044] A spray tray 4 is fixedly installed on the bottom side of the disinfection chamber of the cabinet 1. A bone tissue placement basket 6 is slidably mounted on the top of the spray tray 4. Two sets of rotatable spray arm assemblies 5 are symmetrically mounted on the inner side of the top of the disinfection chamber of the cabinet 1. The control panel 2 is electrically connected to the liquid supply system and the drive mechanism of the rotatable spray arm assembly 5, and is used to set the rinsing time, spray water pressure, disinfectant ratio, spray arm rotation angle and disinfection program.

[0045] Furthermore, the spray tray 4 includes a base frame 41, diverting spray channels 42, a perforated raised pad 43, and support bars 44. The base frame 41 is internally divided into several independent diverting spray channels 42, and support bars 44 are spaced apart above the diverting spray channels 42. The perforated raised pad 43 is detachably laid on the support bars 44. The base frame 41 is fixed to the bottom of the disinfection chamber of the cabinet, and multiple independent diverting spray channels 42 are integrally formed inside. Each channel corresponds to a row of positioning rod assemblies 65 in the basket to achieve zoned flow guidance. The support bars 44 are horizontally erected above the base frame 41, and the perforated raised pad 43 is laid flat on the top surface of the support bars 44, forming a lower permeable gap between the perforated raised pad 43 and the base frame 41.

[0046] Furthermore, the diversion spray channels 42 are independent flow guiding grooves, and each diversion spray channel 42 corresponds to a set of positioning rod assemblies 65. The two ends of the diversion spray channels 42 are connected to the waste liquid collection chamber at the bottom of the cabinet 1. The hollowed-out raised pad 43 is covered with water-permeable hollow holes, and a lower flow guiding gap is formed between the hollowed-out raised pad 43 and the support strip 44. During bone tissue rinsing, the rinsing fluid from top to bottom passes through the gaps in the supporting base plate 64 and the bone tissue gaps and falls to the hollowed-out raised pad 43. The water flows through the water-permeable holes of the hollowed-out raised pad 43 into the lower gap and quickly flows into the diversion spray channels 42. The diversion spray channels 42 adopt a diagonal flow guiding design at both ends, and the waste liquid quickly flows along the channel to the waste liquid chamber at the bottom of the cabinet, preventing water accumulation on the tray surface. Independent zoned flow channels can prevent the accumulation of large amounts of waste liquid on one side, which can lead to local water pressure backflow. This ensures smooth water flow under each set of bone blocks and prevents dirt and bacteria from accumulating on the bottom surface of the bone tissue, causing secondary pollution.

[0047] Furthermore, the rotatable spray arm assembly 5 includes a cavity fixing joint 51, a rotating hinge connecting rod 52, a water supply hose 53, and a spray head 54. The cavity fixing joint 51 is fixed to the inner wall of the cabinet 1, and the cavity fixing joint 51 is movably connected to the spray head 54 through the rotating hinge connecting rod 52. The water supply hose 53 connects the cavity fixing joint 51 and the spray head 54, and the water supply hose 53 is externally connected to a disinfection and rinsing liquid supply system. After the bone tissue is placed inside the metal frame 62, the operator closes the sealed box door 3. After closing, the silicone sealing ring at the edge of the box door presses against the end face of the cabinet 1, completely sealing the disinfection chamber, preventing the wastewater and microbial aerosols generated by the spray from spreading outwards. The cavity fixing joint 51 is pre-embedded and fixed on the inner wall of the top of the cabinet 1. A fluid channel is opened inside and connected to an external disinfection and rinsing supply pipeline. Physiological saline and disinfectant are introduced into the rotating hinge connecting rod 52. The rotating hinge connecting rod 52 has a built-in double universal rotating shaft and a micro drive motor. It receives electrical signals from the control panel 2 and synchronously performs up-and-down swinging and horizontal circular rotation. The water supply hose 53 is made of flexible and pressure-resistant material. It follows the spray nozzle 54 to twist and swing at all angles without bending or blocking the fluid channel, and continuously and stably delivers the rinsing liquid.

[0048] Furthermore, the rotating hinge link 52 is a dual-axis universal hinge structure, and the water supply hose 53 is a flexible, pressure-resistant silicone tube, adapted to the full-angle rotation of the spray nozzle 54 without bending or blocking water. The end face of the spray nozzle 54 has multi-directional spray micro-holes, which can simultaneously spray disinfectant rinsing solution downwards and obliquely. The end face of the spray nozzle 54 is distributed with multi-directional inclined spray micro-holes, spraying out a fan-shaped high-pressure water curtain. During the coarse rinsing stage, the nozzle swings significantly to expand the spray coverage area and remove large pieces of dirt. During the disinfectant stage, the nozzle rotates at a low speed, and the water curtain continuously wraps the top surface, both sides, and bone gaps of the bone tissue. The disinfectant solution fully penetrates the trabeculae and deep medullary cavity. During the fine rinsing stage, the water pressure is increased, and the entire area is rotated to rinse away residual disinfectant.

[0049] Example 3, based on Example 1, such as Figure 5 , Figure 8 , Figure 9 and Figure 10As shown, the bone tissue placement basket 6 further includes a positioning slide rail 61, a metal frame 62, a positioning sliding wheel assembly 63, a supporting base plate 64, and a positioning rod assembly 65. The positioning sliding wheel assembly 63 is fixedly installed on the outer walls of both sides of the metal frame 62. The positioning slide rail 61 is set on the inner wall of the disinfection chamber of the cabinet 1 corresponding to the positioning sliding wheel assembly 63. The supporting base plate 64 is fixedly connected to the bottom of the metal frame 62. Several positioning rod assemblies 65 are arranged vertically in an array on the supporting base plate 64. When the operator opens the sealed box door 3, the sealed box door folds downward along the bottom hinge axis without upward obstruction or interference. The positioning slide rail 61 is fixed to the left and right inner walls of the disinfection chamber of the cabinet. The positioning sliding wheel assembly 63 is assembled on both sides of the metal frame 62. The rollers are inserted into the positioning slide rail 61. The operator smoothly pulls the basket outward to load the material and pushes it inward to the disinfection station. The rollers limit the basket to prevent it from shifting left or right or tipping over.

[0050] Furthermore, the positioning sliding wheel assembly 63 includes silent sliding rollers, and the positioning slide rail 61 is an inwardly recessed limiting groove. The bone tissue placement basket 6 is pulled in and out of the disinfection chamber of the cabinet 1 via the positioning sliding wheel assembly 63 along the positioning slide rail 61. After being pulled out, the positioning sliding wheel assembly 63 engages to limit and prevent the basket from shifting. The metal frame 62 is a hollow metal frame without any closed baffles on all sides, allowing the side spray water to directly pass through the frame to rinse the sides of the bone tissue. The bottom is welded with a supporting base plate 64, which is covered with long, permeable slits, allowing the falling rinsing liquid to directly pass through the base plate into the spray tray 4 below.

[0051] Furthermore, the positioning insert assembly 65 includes a base plate mounting seat 652, a positioning insert body 653, a limiting end 654, a limiting support wing 651, and a wing fixing ring 655. The base plate mounting seat 652 is fixed to the surface of the supporting base plate 64. The positioning insert body 653 is vertically fixedly mounted at the center of the base plate mounting seat 652. The limiting end 654 is provided at the top of the positioning insert body 653. The positioning insert body 653 is fixed to the limiting support wing 651 in layers through the wing fixing ring 655. Multiple sets of positioning insert assemblies 65 are arrayed on the supporting base plate 64 as a dedicated limiting tooling for bone tissue. The base plate mounting seat 652 is threadedly fixed to the supporting base plate 64. Inserts that can be detached and replaced to adapt to bone tissue of different sizes are provided. The positioning insert body 653 is vertically upward, and the diameter of the limiting end 654 at the top is enlarged to prevent bone fragments from sliding upward and detaching from the insert.

[0052] Furthermore, the positioning insert assembly 65 includes at least two layers of limiting support wings 651. The upper and lower layers of limiting support wings 651 are arranged in a cross-shaped staggered pattern. The edges of the limiting support wings 651 are rounded and chamfered. A water-permeable drainage gap is reserved between the limiting support wings 651 and the supporting base plate 64. The diameter of the limiting end 654 is larger than the diameter of the positioning insert body 653, which is used to restrict the upward slippage of bone tissue. The wing fixing rings 655 are layered and sleeved on the insert body, with each layer fixing the cross-shaped staggered limiting support wings 651. The bone block can be locked between the two layers of wings, and is limited both vertically and horizontally, preventing it from tipping over or stacking. A water-permeable gap is reserved between the wings, allowing the flushing fluid to pass through the wings and contact the upper and lower surfaces of the bone block, forming vertical convection flushing. During loading, tubular and block bones are vertically inserted into the positioning rod body 653, with long and short bones clamped in layers and spray gaps reserved between bones to ensure that each bone tissue can be exposed to multi-angle spray water flow.

[0053] When in use, when the operator opens the sealed box door 3, the sealed box door folds down along the bottom hinge axis without upward obstruction or interference. The positioning slide rail 61 is fixed to the left and right inner walls of the disinfection chamber of the cabinet. The positioning sliding wheel group 63 is assembled on both sides of the metal frame 62. The rollers are inserted into the positioning slide rail 61. The operator can smoothly pull the basket outward to load the material and push it inward to the disinfection station. The roller limit prevents the basket from shifting left and right or tipping over.

[0054] The metal frame 62 is a hollow metal frame with no closed baffles around it. The side spray water can directly pass through the frame to rinse the side of the bone tissue. The bottom is welded with a supporting base plate 64, which is covered with long water-permeable gaps. The falling rinsing liquid can directly pass through the base plate and enter the spray tray 4 below.

[0055] Multiple positioning rod assemblies 65 are arrayed on the support base plate 64 as a dedicated limiting tool for bone tissue. The base plate mounting seat 652 is threadedly fixed on the support base plate 64. The rods can be detached and replaced to adapt to different sizes of bone tissue. The main body 653 of the positioning rod is vertically upward, and the diameter of the top limiting end 654 is enlarged to prevent the bone block from sliding upward and detaching from the rod.

[0056] The wing fixing ring 655 is layered and sleeved on the rod body. Each layer is fixed with cross-shaped limiting support wing 651. The bone block can be locked between the two layers of wing 651 and is limited in the upper and lower and left and right directions, so it will not tilt or stack. Water-permeable gaps are reserved between the wing 655, and the flushing liquid can pass through the wing 655 to contact the upper and lower surfaces of the bone block to form an upper and lower convection flushing.

[0057] During loading, tubular and block bones are vertically inserted into the positioning rod body 653, with long and short bones clamped in layers and spray gaps reserved between bones to ensure that each bone tissue can be exposed to multi-angle spray water flow.

[0058] After the bone tissue is placed inside the metal frame 62, the operator closes the sealed door 3. After closing, the silicone sealing ring at the edge of the door presses against the end face of the cabinet 1, completely sealing the disinfection chamber. The sewage and microbial aerosols generated by the spray cannot diffuse outward.

[0059] The cavity fixing joint 51 is pre-embedded and fixed on the inner wall of the top of the cabinet 1. A fluid channel is opened inside and connected to an external disinfection and rinsing supply pipeline. Physiological saline and disinfectant are introduced into the rotating hinge connecting rod 52. The rotating hinge connecting rod 52 has a built-in double universal rotating shaft and a micro drive motor. It receives electrical signals from the control panel 2 and synchronously performs up-and-down swinging and horizontal circular rotation. The water supply hose 53 is made of flexible and pressure-resistant material. It follows the spray nozzle 54 to twist and swing at all angles without bending or blocking the fluid channel, and continuously and stably delivers the rinsing liquid.

[0060] The spray nozzle has 54 end faces with multi-directional inclined spray micro-holes that spray out a fan-shaped high-pressure water curtain. During the coarse rinsing stage, the nozzle swings significantly to expand the spray coverage area and remove large pieces of dirt. During the disinfection stage, the nozzle rotates at a low speed, and the water curtain continuously wraps around the top surface, both sides, and bone gaps of the bone tissue. The disinfectant fully penetrates the trabeculae and deep medullary cavity. During the fine rinsing stage, the water pressure is increased, and the entire area is rotated to rinse away any residual disinfectant.

[0061] The base frame 41 is fixed to the bottom of the disinfection chamber of the cabinet. Inside, multiple independent diversion spray channels 42 are integrally formed. Each channel corresponds to a row of positioning rod components 65 in the basket to achieve zoned flow. The support bar 44 is horizontally mounted above the base frame 41. The hollowed-out lifting pad 43 is laid flat on the top surface of the support bar 44, and a lower water-permeable gap is formed between the hollowed-out lifting pad 43 and the base frame 41.

[0062] During bone tissue rinsing, the rinsing fluid flows downwards through the gaps in the supporting base plate 64 and the spaces between the bone tissue, falling onto the perforated raised pad 43. The water flows through the permeable holes of the perforated raised pad 43 into the lower gaps and quickly converges into the diversion spray channel 42. The diversion spray channel 42 adopts a design with inclined guides at both ends, allowing waste liquid to quickly converge into the waste liquid tank at the bottom of the cabinet along the channel, preventing water accumulation on the tray surface. The independent zoned channels can avoid the accumulation of a large amount of waste liquid on one side, which can cause local water pressure backflow, ensuring smooth water flow under each group of bone blocks and preventing dirt and bacteria from accumulating on the bottom surface of the bone tissue and causing secondary pollution.

Claims

1. A method for disinfecting bone tissue, characterized in that, Includes the following steps: Step 1: Pre-treatment and decontamination. The operator first removes the soft tissue, fascia, bone marrow, and blood clots from the bone surface. The scalpel peels off the attached muscles and periosteum. Then, the bone marrow cavity is flushed with physiological saline under high pressure. The medullary cavity curette is used to clean the intramedullary fat and hematopoietic tissue. The bone fragments are washed with running water to remove grease and dirt, and then trimmed into bone segments of the required size. Step 2: Auxiliary disinfection. Before disinfection, the pre-treated bone tissue is first soaked in anhydrous ethanol to dissolve the fat in the bone, then rinsed repeatedly with sterile saline until there is no floating oil, and finally soaked at room temperature with nonionic surfactant to remove cell debris. Step 3: Disinfection and rinsing. The operator soaks the bone tissue in medical ethanol, then in povidone-iodine, and finally puts the pre-treated bone tissue into the disinfection and cleaning equipment, and rinses it thoroughly with sterile saline solution multiple times to remove residual disinfectant.

2. A bone tissue disinfection and rinsing device, characterized in that: Includes a cabinet (1) and a control panel (2) fixedly installed on the upper part of the cabinet (1). The cabinet (1) forms a sealed disinfection chamber inside. The bottom of the cabinet (1) is hinged with a sealed door (3). When the sealed door (3) is closed, the cabinet (1) is completely sealed. The cabinet (1) has a spray tray (4) fixedly installed on the bottom side of the disinfection chamber. A bone tissue placement basket (6) is slidably mounted on the top of the spray tray (4). Two sets of rotatable spray arm assemblies (5) are symmetrically mounted on the inner side of the top of the disinfection chamber of the cabinet (1). The control panel (2) is electrically connected to the liquid supply system and the drive mechanism of the rotatable spray arm assembly (5) for setting the rinsing time, spray water pressure, disinfectant ratio, and spray arm rotation angle disinfection program.

3. The bone tissue disinfection and rinsing device according to claim 2, characterized in that: The spray tray (4) includes a base frame (41), a diversion spray channel (42), a hollowed-out raised pad (43), and a support strip (44). The base frame (41) is divided into several independent diversion spray channels (42). The support strip (44) is arranged at intervals above the diversion spray channels (42). The hollowed-out raised pad (43) can be detachably laid on the support strip (44).

4. The bone tissue disinfection and rinsing device according to claim 3, characterized in that: The diversion spray channel (42) is an independent flow guide groove. Each diversion spray channel (42) corresponds to a set of positioning rod assemblies (65). The two ends of the diversion spray channel (42) are connected to the waste liquid collection chamber at the bottom of the cabinet (1). The hollowed-out lifting pad (43) is filled with water-permeable hollow holes. The hollowed-out lifting pad (43) and the support strip (44) form a lower flow guide gap.

5. The bone tissue disinfection and rinsing device according to claim 2, characterized in that: The rotatable spray arm assembly (5) includes a cavity fixing joint (51), a rotating hinge connecting rod (52), a water supply hose (53), and a spray nozzle (54). The cavity fixing joint (51) is fixed to the inner wall of the cabinet (1). The cavity fixing joint (51) is movably connected to the spray nozzle (54) through the rotating hinge connecting rod (52). The water supply hose (53) is connected between the cavity fixing joint (51) and the spray nozzle (54). The water supply hose (53) is connected to a disinfection and rinsing liquid supply system.

6. The bone tissue disinfection and rinsing device according to claim 5, characterized in that: The rotating hinge link (52) is a double-axis universal hinge structure, and the water supply hose (53) is a flexible pressure-resistant silicone tube that is compatible with the spray nozzle (54) so ​​that it can rotate at all angles without bending or blocking water. The end face of the spray nozzle (54) is provided with multi-directional spray micro-holes, which can spray disinfectant and rinsing liquid downwards and at an angle at the same time.

7. The bone tissue disinfection and rinsing device according to claim 2, characterized in that: The bone tissue placement basket (6) includes a positioning slide rail (61), a metal frame (62), a positioning sliding wheel assembly (63), a supporting base plate (64), and a positioning rod assembly (65). The positioning sliding wheel assembly (63) is fixedly installed on the outer walls of both sides of the metal frame (62). The positioning slide rail (61) is set on the inner wall of the disinfection chamber of the cabinet (1) corresponding to the positioning sliding wheel assembly (63). The supporting base plate (64) is fixedly connected to the bottom of the metal frame (62). Several positioning rod assemblies (65) are arranged vertically in an array on the supporting base plate (64).

8. The bone tissue disinfection and rinsing device according to claim 7, characterized in that: The positioning sliding wheel assembly (63) includes silent sliding rollers, and the positioning slide rail (61) is an inwardly recessed limiting slide groove. The bone tissue placement basket (6) is pulled in and out of the cabinet (1) disinfection chamber along the positioning slide rail (61) via the positioning sliding wheel assembly (63). After being pulled out, the positioning sliding wheel assembly (63) engages to limit and prevent the basket from shifting.

9. A bone tissue disinfection and rinsing device according to claim 7, characterized in that: The positioning rod assembly (65) includes a base plate mounting seat (652), a positioning rod body (653), a limiting end (654), a limiting support wing (651), and a wing fixing ring (655). The base plate mounting seat (652) is fixed on the surface of the supporting base plate (64). The positioning rod body (653) is vertically fixed at the center of the base plate mounting seat (652). The limiting end (654) is provided at the top of the positioning rod body (653). The positioning rod body (653) is fixed to the limiting support wing (651) in layers through the wing fixing ring (655).

10. A bone tissue disinfection and rinsing device according to claim 9, characterized in that: The positioning rod assembly (65) includes at least two layers of limiting support wing pieces (651). The upper and lower layers of limiting support wing pieces (651) are arranged in a cross pattern. The edges of the limiting support wing pieces (651) are rounded and chamfered. A water-permeable drainage gap is reserved between the limiting support wing pieces (651) and the supporting base plate (64). The diameter of the limiting end (654) is larger than the diameter of the positioning rod body (653) to restrict the upward slippage of bone tissue.

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