A composite device for autologous bone harvesting and bone treatment

Abstract

The present invention relates to the field of bone processing technology, and specifically to a composite device for autologous bone harvesting and bone processing, comprising: a bone harvesting auxiliary device and a bone processing device; the bone harvesting auxiliary device comprises: a bone harvesting caliper, a guide sleeve and a depth-limiting Steinmann pin; the bone processing device comprises: a bone box, a fixing assembly and a cutting assembly. The composite device for autologous bone harvesting and bone processing of the present invention can accurately harvest materials based on preoperative imaging measurement results to avoid waste of resources. During the operation, the device can obtain cancellous bone, unicoral bone, bicortical bone and tricortical bone. At the same time, bone products of various shapes and sizes, such as bone particles, bone strips, bone slices, bone blocks, etc., can be prepared according to the requirements of the bone grafting area.

Description

Technical Field

[0001] The present invention relates to the technical field of bone treatment, in particular to a composite device for autologous bone harvesting and bone treatment. Background Art

[0002] Nonunion, bone defects, bone atrophy, osteonecrosis, difficulty in bone fusion (due to certain spinal instabilities, pseudarthrosis, or metabolic diseases), and conditions requiring revision orthopedic surgery are difficult to treat in orthopedics, with an overall incidence exceeding 10%. Improper management can lead to long-term functional impairment or even disability. These orthopedic conditions often require multiple, major, and complex surgeries, posing a significant threat to patients' quality of life and their families' finances.

[0003] Autologous bone grafting is one of the most commonly used techniques in orthopedics. It can solve the problems of bone induction, bone formation, bone conduction, and bone support. It is the "Go l den-Standard" for treating complex orthopedic diseases such as nonunion, bone defects, orthopedic revision surgery, etc.

[0004] The most common method for autologous bone grafting is to harvest the iliac crest. However, the limited bone supply in the iliac crest makes it difficult to fill large bone defects. When the required volume exceeds 70cc, other bone graft materials are often mixed in. The proportion, contact surface, and material morphology of the mixture of iliac crest and other bone graft materials directly impact the clinical efficacy of autologous bone grafting.

[0005] At this time, bone strips, bone particles, and bone slices with appropriate shapes can achieve a bone grafting effect with twice the result with half the effort, thereby reducing the amount of autologous bone removed. At the same time, when removing autologous bone, the most commonly used surgical instruments for clinical surgeons are bone knives and bone hammers, which often make it difficult to ensure the precise amount of bone removed, and are prone to complications such as iatrogenic fractures, bleeding, hematoma and infection, and muscle and nerve damage. Furthermore, for the morphological processing of autologous bone, the most commonly used surgical instruments for clinical surgeons are bone scissors and bone knives, which often make it difficult to ensure a uniform shape and size, and are extremely time-consuming and risky due to contamination caused by repeated cutting. Therefore, there is an urgent need for a simple and lightweight surgical instrument system for autologous bone removal and bone processing in the clinic. Summary of the Invention

[0006] In view of this, the present invention proposes a composite device for autologous bone harvesting and bone processing, which is mainly intended to solve the problem of how to ensure accurate bone harvesting and on-demand bone morphology processing during the autologous bone harvesting and bone processing process, while reducing the difficulty and risk of bone harvesting and bone processing.

[0007] In one aspect, the present invention provides a composite device for autologous bone harvesting and bone treatment, comprising:

[0008] bone harvesting assist devices and bone processing devices;

[0009] The bone removal auxiliary device comprises:

[0010] A bone caliper comprising four bone calipers and four first knobs, wherein the four bone calipers intersect in pairs and are connected at intersections by the first knobs;

[0011] The first knob is used to adjust the tightness of the two bone-harvesting rulers and is also used to set the planned bone-harvesting area.

[0012] The guide sleeves include four guide sleeves, one end of which is connected to the first knob and is used to control the direction and hold the bone caliper;

[0013] Four depth-limiting Steinmann pins are disposed inside the guide sleeve and are used to tightly attach and fix the bone caliper to the bone;

[0014] The bone processing device comprises:

[0015] The bone box has a partition in the middle and a bone drawer in the lower part, and the bone drawer is used to collect the finished bone products;

[0016] Wherein, a groove is provided on the partition;

[0017] A fixing assembly, comprising an extrusion rod and a push rod, wherein the extrusion rod is arranged on a side wall of the bone box and extends into the interior of the bone box, and the push rod is arranged on the top surface of the bone box and extends into the interior of the bone box, for fixing the bone to prevent slippage and flipping;

[0018] The cutting assembly includes a rocker and a cutting blade, one end of the rocker is disposed on a groove of a partition inside the bone box, and the rocker is located at the upper portion of the bone drawer. The cutting blade is disposed on the rocker and close to the inner wall of the bone box. The length of the cutting blade is greater than the height of the bone box so that the cutting blade has a lateral arc curvature.

[0019] The rocker is provided with a thread on the outer wall of one end located inside the bone box, for assisting in pushing the bone block;

[0020] The bone drawer is an L-shaped structural connecting plate, one end of the bone drawer is parallel to the bottom surface of the bone box, and the other end of the bone drawer is parallel to the side wall of the bone box.

[0021] In some embodiments of the present application, a second through hole is formed on the first knob, and one end of the second through hole extends out of the first knob, and an outer side wall of the second through hole located outside the first knob and an inner side wall of the second through hole are provided with threads;

[0022] The first knob is sequentially connected to one of the sliders on the two slide rails, and the second through hole corresponds to the position of the first through hole on the two sliders.

[0023] In some embodiments of the present application, the guide sleeve is a hollow structure, and the outer wall of one end of the guide sleeve is provided with anti-slip grooves, the inner wall of the other end of the guide sleeve is provided with threads, the other end of the guide sleeve is threadedly connected to the first knob, and the first through hole of the first knob extends into the guide sleeve.

[0024] In some embodiments of the present application, the depth-limiting pin is a cylindrical bone pin, and one end of the depth-limiting pin is provided with a thread, and a depth-limiting disk is further provided near the end of the depth-limiting pin provided with the thread, and the diameter of the depth-limiting disk is greater than the diameter of the second through hole;

[0025] The depth-limiting Steinmann pin is arranged inside the guide sleeve, and the end of the depth-limiting Steinmann pin with a thread faces the end of the guide sleeve with a thread, and the end of the depth-limiting Steinmann pin with a thread extends into the first knob.

[0026] In some embodiments of the present application, the two long sides of the bone removal ruler are provided with conical slopes, and the bone removal ruler and the first knob are both provided with scales.

[0027] In some embodiments of the present application, the push rod includes:

[0028] a first connecting plate, which is arranged on the outside of the bone box;

[0029] a second connecting plate, which is disposed on an outer side wall of the bone box;

[0030] A main spring, two ends of which are respectively connected to the opposite side walls of the first connecting plate and the second connecting plate;

[0031] a first connecting rod, one end of which passes through the main spring and is connected to a side wall of the first connecting plate, and the other end of which passes through the second connecting plate and the outer side wall of the bone box in sequence and extends into the interior of the bone box;

[0032] Auxiliary springs, including a plurality of auxiliary springs, both ends of which are respectively connected to the two opposite side walls of the first connecting plate and the second connecting plate;

[0033] The third connecting plate is arranged inside the bone box, and one side wall of the third connecting plate is connected to the other end of the first connecting rod, and the other side wall of the third connecting plate is provided with a tooth-like protrusion.

[0034] In some embodiments of the present application, the extrusion rods are provided in two groups, including:

[0035] a fourth connecting plate, which is arranged on the top of the bone box;

[0036] a fifth connecting plate, which is disposed inside the bone box;

[0037] a sixth connecting plate disposed inside the bone box, wherein the upper surface of the sixth connecting plate is connected to the lower surface of the fifth connecting plate, and three sides of the sixth connecting plate are in contact with the corresponding inner sidewalls of the bone box;

[0038] a second connecting rod, one end of which is connected to the lower surface of the fourth connecting plate, the other end of which passes through the top surface of the bone box and extends into the interior of the bone box and is connected to the upper surface of the fifth connecting plate, and the outer side wall of the second connecting rod is provided with a thread;

[0039] The limiting connecting plate is an L-shaped structure and is arranged on one side of the sixth connecting plate.

[0040] In some embodiments of the present application, the cutting assembly further comprises:

[0041] a second knob disposed on an outer side wall of the bone box close to the cutting blade, and having a scale disposed on the second knob, and used for adjusting the lateral arc curvature of the cutting blade;

[0042] In some embodiments of the present application, the cutting assembly further comprises a sleeve, the sleeve being fixedly sleeved on the rocker and passing through a side wall of the bone box away from the push rod;

[0043] The other end of the rocker passes through the sleeve, the outer side wall of the bone box and the second knob in sequence, and a grip is provided on the other end of the rocker.

[0044] In some embodiments of the present application, the cutting blade is a flat arc blade or a curved tooth blade.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The bone extraction auxiliary device involved in the present invention is characterized in that the bone extraction caliper can be arbitrarily combined into various shapes, and can accurately remove bone blocks of suitable shape and volume according to preoperative imaging data and actual needs during surgery. The depth-limiting Steinmann wire has a pressurizing function, which can press the bone extraction caliper against the bone surface, avoiding iatrogenic fractures caused by uneven use of bone knives or excessive force, and reducing the risk of bone debris splashing. The bone extraction caliper has a conical surface, similar to a periosteal stripper, which can flexibly push the periosteum, reduce bleeding, and improve the exposure efficiency of the surgical area. In addition, by connecting a guide sleeve or a depth-limiting Steinmann wire, important anatomical structures can be shielded, blood vessels, nerves and muscles can be protected, the risk of iatrogenic injury can be reduced, and retractors can be replaced to save manpower while achieving the goal of small incisions and minimally invasive surgery. Even in cases where the patient has thick fat and a deep wound, it can be operated by one person without the need for additional retractors, reducing the need for surgical assistants.

[0047] Furthermore, the bone processing device of the present invention can prepare various bone products of different shapes and sizes, such as bone blocks, bone slices, bone strips, bone particles, etc., according to the shape of the bone grafting area.

[0048] Furthermore, the combined autologous bone harvesting and processing device of the present invention enables precise sampling based on preoperative imaging measurements, avoiding waste of resources. During surgery, the device can harvest cancellous bone, unicoronary bone, bicortical bone, and tricortical bone. Furthermore, bone products of varying shapes and sizes can be prepared based on the morphology of the grafted area. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiment below. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. In the accompanying drawings:

[0050] Figure 1 A schematic structural diagram of a bone caliper provided in an embodiment of the present invention;

[0051] Figure 2 A schematic structural diagram of a guide sleeve and a depth-limiting Steinmann pin provided in an embodiment of the present invention;

[0052] Figure 3 A cross-sectional view of a bone treatment device provided by an embodiment of the present invention;

[0053] Figure 4 A front view of a bone treatment device provided by an embodiment of the present invention;

[0054] Figure 5 A schematic structural diagram of a cutting blade provided in an embodiment of the present invention.

[0055] In the figure: 1. Bone ruler; 2. First knob; 3. Slide rail; 4. Second through hole; 5. Guide sleeve; 6. Anti-slip groove; 7. Depth-limiting Steinmann pin; 8. Depth-limiting plate; 9. Bone box; 10. Bone drawer; 11. First connecting plate; 12. Second connecting plate; 13. Main spring; 14. First connecting rod; 15. Secondary spring; 16. Third connecting plate; 17. Fourth connecting plate; 18. Fifth connecting plate; 19. Sixth connecting plate; 20. Second connecting rod; 21. Limit connecting plate; 22. Second knob; 23. Rocker; 24. Grip; 25. Cutting blade; 26. Flat arc blade; 27. Curved tooth blade; 28. Partition. DETAILED DESCRIPTION

[0056] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] See Figure 1-5 As shown, this embodiment provides a composite device for autologous bone harvesting and bone treatment, comprising:

[0058] bone harvesting assist devices and bone processing devices;

[0059] The bone removal auxiliary device comprises:

[0060] The bone caliper comprises four bone calipers 1 and four first knobs 2, wherein the four bone calipers 1 intersect with each other in pairs, and the intersections are connected by the first knobs 2;

[0061] The first knob 2 is used to adjust the tightness of the two bone-harvesting rulers 1 and is also used to set the planned bone-harvesting area.

[0062] There are four guide sleeves 5, one end of which is connected to the first knob 2 and is used to control the direction and hold the bone caliper;

[0063] Four depth-limiting Steinmann pins 7 are provided inside the guide sleeve 5 and are used to attach and fix the bone caliper to the bone;

[0064] The bone processing device comprises:

[0065] The bone box 9 has a partition 28 in the middle and a bone drawer 10 in the lower part, and the bone drawer 10 is used to collect the finished bone products;

[0066] Wherein, the partition plate 28 is provided with a groove;

[0067] A fixing assembly, comprising an extrusion rod and a push rod, wherein the extrusion rod is provided on a side wall of the bone box 9 and extends into the interior of the bone box 9, and the push rod is provided on the top surface of the bone box 9 and extends into the interior of the bone box 9;

[0068] The cutting assembly includes a rocker 23 and a cutting blade 25. One end of the rocker 23 is disposed on a groove of a partition 28 inside the bone box 9, and the rocker 23 is located at the upper portion of the bone drawer 10. The cutting blade 25 is disposed on the rocker 23 and close to the inner wall of the bone box 9. The length of the cutting blade 25 is greater than the height of the bone box 9 so that the cutting blade 25 has a lateral arc curvature.

[0069] Furthermore, a thread is provided on the outer side wall of one end of the rocker 23 located inside the bone box 9 for assisting in pushing the bone block.

[0070] The bone drawer 10 is an L-shaped structural connecting plate, one end of the bone drawer 10 is parallel to the bottom surface of the bone box 9 , and the other end of the bone drawer 10 is parallel to the side wall of the bone box 9 .

[0071] It can be understood that the composite device for autologous bone harvesting and bone treatment provided in this embodiment achieves convenient bone harvesting and efficient treatment of autologous bones by combining a bone harvesting auxiliary device and a bone treatment device.

[0072] The design of the bone caliper allows the surgeon to precisely measure and locate the bone fragment to be removed. By adjusting the first knob 2, the surgeon can easily control the tightness of the caliper 1 to accommodate bones of varying shapes and sizes. The guide sleeve 5 and depth-limiting Steinmann pin 7 ensure precision and safety during the bone extraction process, preventing accidental injury to blood vessels, nerves, muscles, and iatrogenic fractures.

[0073] The design of the bone box 9 not only provides an enclosed space for storing and handling bone fragments, but also the bone drawer 10 allows the surgeon to conveniently collect and process the finished bone. The squeezing rod and push rod of the fixing assembly effectively secure and move the bone fragments, making subsequent cutting more precise and smooth. The rocker 23 and cutting blade 25 of the cutting assembly allow the surgeon to easily adjust the cutting thickness and angle, achieving efficient bone cutting.

[0074] The entire device cleverly combines the two steps of bone harvesting and bone processing, significantly enhancing the safety and accuracy of the operation through precise bone harvesting assistance and efficient bone processing.

[0075] In a specific embodiment of the present application, the bone caliper further comprises:

[0076] A slide rail 3 is provided in the middle of the bone removal ruler 1 and is parallel to the long side of the bone removal ruler 1. The slide rail 3 is a hollow structure;

[0077] The sliders include eight sliders, two of which are slidably arranged on one of the slide rails 3 , and a first through hole is provided on the slider, and a thread is provided on the inner side wall of the first through hole.

[0078] In a specific embodiment of the present application, a second through hole 4 is formed on the first knob 2, and one end of the second through hole 4 extends out of the first knob 2, and an outer wall of the end of the second through hole 4 located outside the first knob 2 and an inner wall of the second through hole 4 are provided with threads;

[0079] The first knob 2 is sequentially connected to one of the sliders on the two slide rails 3 , and the second through hole 4 corresponds to the position of the first through holes on the two sliders.

[0080] It can be understood that the bone caliper achieves more accurate and flexible planning areas and bone removal operations by adding the design of the slide rail 3 and the slider, and the clever combination of the first knob 2 and these components.

[0081] First, the provision of slide rails 3 allows the slider to slide on bone rudder 1, allowing the surgeon to adjust the slider's position as needed during the bone extraction process, thereby more precisely controlling the use of bone rudder 1. Slide rails 3 are parallel to the long side of bone rudder 1, ensuring the stability of the slider's movement and making measurements more accurate.

[0082] Secondly, the first through hole on the slider and the threaded design on its inner wall provide a connection with the first knob 2. This design makes the connection between the slider and the first knob 2 more stable and not easy to fall off, thereby improving the safety of the bone removal ruler 1.

[0083] Furthermore, the second through hole 4 on the first knob 2 not only allows the first knob 2 to be conveniently connected to other components and is not prone to loosening, but also makes the bone ruler 1 more stable during use, thereby improving the accuracy of operation.

[0084] Finally, the first knob 2 is sequentially connected to a slider on the two slide rails 3, making the bone ruler 1 more flexible when used. At the same time, the second through hole 4 corresponds to the position of the first through hole on the two sliders, ensuring the accuracy and stability of the connection.

[0085] In a specific embodiment of the present application, the guide sleeve 5 is a hollow structure, and the outer wall of one end of the guide sleeve 5 is provided with anti-slip grooves 6, and the inner wall of the other end of the guide sleeve 5 is provided with threads. The other end of the guide sleeve 5 is threadedly connected to the first knob 2, and the first through hole of the first knob 2 extends into the guide sleeve 5.

[0086] In a specific embodiment of the present application, the depth-limiting Steinmann pin 7 is a cylindrical bone pin, and one end of the depth-limiting Steinmann pin 7 is provided with a thread, and a depth-limiting plate 8 is further provided near the end of the depth-limiting Steinmann pin 7 provided with the thread, and the diameter of the depth-limiting plate 8 is greater than the diameter of the second through hole 4;

[0087] The depth-limiting Steinmann pin 7 is arranged inside the guide sleeve 5 , and the end of the depth-limiting Steinmann pin 7 with a thread faces the end of the guide sleeve 5 with a thread, and the end of the depth-limiting Steinmann pin 7 with a thread extends into the first knob 2 .

[0088] In a specific embodiment of the present application, the two long sides of the bone removal ruler 1 are provided with conical inclined surfaces, and the bone removal ruler 1 and the first knob 2 are both provided with scales.

[0089] It is understood that the guide sleeve 5 in this embodiment is a hollow structure, and the outer wall of one end has anti-slip grooves 6, which can increase stability during operation. The inner wall of the other end is threaded and can be screwed into the first knob 2, matching the outer wall thread of the first knob 2 for connection with the first knob 2. The other end of the guide sleeve 5 is threadedly connected to the first knob 2, so that the length of the entire device can be adjusted during use. The depth-limiting Steinmann pin 7 is a cylindrical bone pin with a thread at one end and a depth-limiting plate 8 at the other end near the thread. The diameter of the depth-limiting plate 8 is larger than the diameter of the second through hole 4, which can prevent the depth-limiting Steinmann pin 7 from penetrating too deeply into the bone during use. The depth-limiting Steinmann pin 7 is arranged inside the guide sleeve 5, with the threaded end facing the threaded end of the guide sleeve 5, so that the depth-limiting Steinmann pin 7 can be moved within the guide sleeve 5 by rotating the first knob 2.

[0090] The two long sides of the bone ruler 1 have tapered bevels, which can facilitate operation during surgery. The bone ruler 1 and the first knob 2 are both provided with scales, which enable accurate measurement and positioning during surgery.

[0091] In a specific embodiment of the present application, the push rod includes:

[0092] a first connecting plate 11 , which is arranged outside the bone box 9;

[0093] A second connecting plate 12, which is provided on an outer side wall of the bone box 9;

[0094] A main spring 13, two ends of which are connected to the opposite side walls of the first connecting plate 11 and the second connecting plate 12 respectively;

[0095] A first connecting rod 14, one end of which passes through the main spring 13 and is connected to a side wall of the first connecting plate 11, and the other end of which passes through the second connecting plate 12 and the outer wall of the bone box 9 in sequence and extends into the interior of the bone box 9;

[0096] Auxiliary springs 15, including a plurality of auxiliary springs, both ends of which are connected to the opposite side walls of the first connecting plate 11 and the second connecting plate 12;

[0097] The third connecting plate 16 is disposed inside the bone box 9 , and one side wall of the third connecting plate 16 is connected to the other end of the first connecting rod 14 . The other side wall of the third connecting plate 16 is provided with a tooth-like protrusion.

[0098] It will be appreciated that in this embodiment, the design of the first connecting plate 11 and the second connecting plate 12 establishes a secure connection between the push rod and the bone box 9. This structure not only ensures the stability of the push rod on the bone box 9, but also allows the push rod to maintain a stable motion trajectory when subjected to external forces. The arrangement of the main spring 13 and the secondary spring 15 imparts a certain degree of elasticity to the push rod, allowing it to freely expand and contract within a certain range. This design not only makes the push rod more flexible during operation but also effectively absorbs and cushions external impact forces, protecting the bone box 9 and the push rod itself from damage. The first connecting rod 14 passes through the main spring 13 and the second connecting plate 12, then extends into the interior of the bone box 9 and connects to the third connecting plate 16. This design allows the push rod's movements to be smoothly transmitted to the interior of the bone box 9, ensuring continuous and stable operation. The tooth-like protrusions on the third connecting plate 16 can be customized according to specific needs, and the tooth-like protrusions can be used to cooperate with other structures within the bone box 9.

[0099] In a specific embodiment of the present application, the extrusion rods are provided in two groups, including:

[0100] a fourth connecting plate 17, which is arranged on the top of the bone box 9;

[0101] a fifth connecting plate 18 , which is disposed inside the bone box 9 ;

[0102] a sixth connecting plate 19 disposed inside the bone box 9, wherein the upper surface of the sixth connecting plate 19 is connected to the lower surface of the fifth connecting plate 18, and the three sides of the sixth connecting plate 19 are in contact with the corresponding inner sidewalls of the bone box 9;

[0103] A second connecting rod 20, one end of which is connected to the lower surface of the fourth connecting plate 17, and the other end of which passes through the top surface of the bone box 9 and extends into the interior of the bone box 9 and is connected to the upper surface of the fifth connecting plate 18, and the outer wall of the second connecting rod 20 is provided with a thread;

[0104] The limiting connecting plate 21 is an L-shaped structure and is disposed on one side of the sixth connecting plate 19 .

[0105] As can be appreciated, the combination of the fourth connecting plate 17, the fifth connecting plate 18, and the sixth connecting plate 19 in this embodiment forms a sturdy support structure. The design of the sixth connecting plate 19 is particularly ingenious. Not only is it tightly connected to the fifth connecting plate 18, but its three sides also contact the inner wall of the bone box 9. This significantly enhances the stability of the connection between the extrusion rod and the bone box 9 and the rigidity of the overall structure. The design of the second connecting rod 20 allows for adjustment by the physician. The outer wall of the second connecting rod 20 is threaded, allowing it to mate with corresponding threaded interfaces for precise lifting or fixing. This design allows the height or position of the extrusion rod to be adjusted according to actual needs, adapting to different usage scenarios or operational requirements. The design of the limiting connecting plate 21 further enhances the functionality of the extrusion rod. As an L-shaped structure, the limiting connecting plate 21 effectively prevents the material within the bone box 9 from overflowing or shifting during the extrusion process. Furthermore, it works in conjunction with other components to ensure uniform extrusion pressure on the material within the bone box 9, thereby improving production efficiency and product quality.

[0106] In a specific embodiment of the present application, the cutting assembly further includes:

[0107] a sleeve, the sleeve being fixedly sleeved on the rocker 23 and passing through the side wall of the bone box 9 away from the push rod;

[0108] A second knob 22 is provided on one end of the sleeve passing through the bone box 9, and a scale is provided on the second knob 22. The second knob 22 is used to adjust the lateral arc curvature of the cutting blade 25;

[0109] The other end of the rocker 23 passes through the sleeve, the outer wall of the bone box 9 and the second knob 22 in sequence, and a grip 24 is provided on the other end of the rocker 23 .

[0110] In a specific embodiment of the present application, the cutting blade 25 is a flat arc-shaped blade 26 or a curved tooth-shaped blade 27 .

[0111] It is understood that the cutting assembly in this embodiment is equipped with a second knob 22, which is located on the outer wall of the bone box 9, near the cutting blade 25. The second knob 22 is provided with a scale, and the doctor can adjust the lateral curvature of the cutting blade 25 by rotating the knob. This design makes the cutting blade 25 more flexible and can be adjusted according to different cutting requirements and material properties, improving the accuracy and efficiency of cutting. The other end of the rocker 23 passes through the outer wall of the bone box 9 and the second knob 22, and a grip 24 is provided at its end, making it more convenient for the doctor to operate. The grip 24 can easily control the movement of the rocker 23, thereby controlling the cutting thickness and angle of the cutting blade 25. The design of the grip 24 also increases the comfort and stability of operation.

[0112] Specifically, by adjusting the tightening degree of the second knob 22 , the distance between one end of the sleeve where the second knob 22 is located and the other end of the sleeve can be adjusted, thereby adjusting the lateral arc curvature of the cutting blade 25 .

[0113] Specifically, the cutting blade 25 can be a flat arc blade 26 or a curved tooth blade 27. This diversity allows the cutting assembly to adapt to different cutting requirements. The doctor can choose the appropriate type of cutting blade 25 according to actual conditions to improve the cutting effect.

[0114] Specifically, the workflow of the bone removal auxiliary device in this embodiment is as follows: first, expose the bone removal area, connect the guide sleeve 5 to the bone removal caliper, and use the conical slope on the bone removal caliper 1, which is similar to a "periosteal stripper", to push the muscles and periosteum away, while the guide sleeve 5 initially blocks the surrounding tissue. Subsequently, according to the preoperative plan and intraoperative needs, adjust the knob of the bone removal caliper, select the appropriate caliper shape based on the scale and angle of the caliper, simulate the bone removal area, and pre-tighten. Next, design and confirm the shape of the bone removal caliper, screw in the depth-limiting Steinmann wire 7, and use a thin bone knife to remove bones in the central bone removal area or the sliding area.

[0115] Specifically, the bone processing device in this embodiment operates as follows: A bone block is placed in the bone box 9, positioned on the rocker 23. Two sets of squeezing rods and a push rod are used to secure the block, preventing it from tilting or sliding. An appropriate cutting blade 25 is selected, and the second knob 22 is adjusted to the appropriate scale, representing the thickness of the bone product. The handle 24 on the rocker 23 is then shaken to perform the cutting, collecting the cut material from the bone drawer 10. If bone granules are desired, bone strips are repeatedly placed in the bone box 9, performing multiple cutting operations.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A composite device for autologous bone harvesting and bone treatment, characterized in that: include: bone harvesting assist devices and bone processing devices; The bone removal auxiliary device comprises: A bone caliper comprising four bone calipers and four first knobs, wherein the four bone calipers intersect in pairs and are connected at intersections by the first knobs; Wherein, the first knob is used to adjust the tightness of the two bone removal rulers, so as to simultaneously set the shape and size of the bone removal; Four guide sleeves, one end of which is connected to the first knob; Depth-limiting Steinmann pins, including four, are arranged inside the guide sleeve; The bone processing device comprises: The bone box has a partition in the middle and a bone drawer in the lower part, and the bone drawer is used to collect the finished bone products; Wherein, a groove is provided on the partition; A fixing assembly, comprising an extrusion rod and a push rod, wherein the extrusion rod is arranged on a side wall of the bone box and extends into the interior of the bone box, and the push rod is arranged on the top surface of the bone box and extends into the interior of the bone box; The cutting assembly includes a rocker and a cutting blade, one end of the rocker is disposed on a groove of a partition inside the bone box, and the rocker is located at the upper portion of the bone drawer. The cutting blade is disposed on the rocker and close to the inner wall of the bone box. The length of the cutting blade is greater than the height of the bone box so that the cutting blade has a lateral arc curvature. A thread is provided on the outer side wall of one end of the rocker located inside the bone box; The bone drawer is an L-shaped structural connecting plate, one end of the bone drawer is parallel to the bottom surface of the bone box, and the other end of the bone drawer is parallel to the side wall of the bone box.

2. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The bone caliper also includes: A slide rail is provided in the middle of the bone rudiment and is parallel to the long side of the bone rudiment, and the slide rail is a hollow structure; The sliders include eight sliders, two of which are slidably arranged on one of the slide rails, and a first through hole is provided on the slider, and a thread is provided on the inner side wall of the first through hole.

3. The combined device for autologous bone harvesting and bone treatment according to claim 2, characterized in that: A second through hole is formed on the first knob, and one end of the second through hole extends out of the first knob, and threads are provided on an outer side wall of the second through hole at one end outside the first knob and an inner side wall of the second through hole; The first knob is sequentially connected to one of the sliders on the two slide rails, and the second through hole corresponds to the position of the first through hole on the two sliders.

4. The combined device for autologous bone harvesting and bone treatment according to claim 3, characterized in that: The guide sleeve is a hollow structure, and the outer wall of one end of the guide sleeve is provided with anti-slip grooves, and the inner wall of the other end of the guide sleeve is provided with threads. The other end of the guide sleeve is threadedly connected to the first knob, and the first through hole of the first knob extends into the guide sleeve.

5. The combined device for autologous bone harvesting and bone treatment according to claim 4, characterized in that: The depth-limiting pin is a cylindrical bone pin, and one end of the depth-limiting pin is provided with a thread, and a depth-limiting disk is provided near the end of the depth-limiting pin provided with the thread, and the diameter of the depth-limiting disk is greater than the diameter of the second through hole; The depth-limiting Steinmann pin is arranged inside the guide sleeve, and the end of the depth-limiting Steinmann pin with a thread faces the end of the guide sleeve with a thread, and the end of the depth-limiting Steinmann pin with a thread extends into the first knob.

6. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The two long sides of the bone removal ruler are provided with conical inclined surfaces, and the bone removal ruler and the first knob are both provided with scales.

7. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The push rod comprises: a first connecting plate, which is arranged on the outside of the bone box; a second connecting plate, which is disposed on an outer side wall of the bone box; A main spring, two ends of which are respectively connected to the opposite side walls of the first connecting plate and the second connecting plate; a first connecting rod, one end of which passes through the main spring and is connected to a side wall of the first connecting plate, and the other end of which passes through the second connecting plate and the outer side wall of the bone box in sequence and extends into the interior of the bone box; Auxiliary springs, including a plurality of auxiliary springs, both ends of which are respectively connected to the two opposite side walls of the first connecting plate and the second connecting plate; The third connecting plate is arranged inside the bone box, and one side wall of the third connecting plate is connected to the other end of the first connecting rod, and the other side wall of the third connecting plate is provided with a tooth-like protrusion.

8. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The extrusion rods are provided in two groups, including: a fourth connecting plate, which is arranged on the top of the bone box; a fifth connecting plate, which is disposed inside the bone box; a sixth connecting plate disposed inside the bone box, wherein the upper surface of the sixth connecting plate is connected to the lower surface of the fifth connecting plate, and three sides of the sixth connecting plate are in contact with the corresponding inner sidewalls of the bone box; a second connecting rod, one end of which is connected to the lower surface of the fourth connecting plate, the other end of which passes through the top surface of the bone box and extends into the interior of the bone box and is connected to the upper surface of the fifth connecting plate, and the outer side wall of the second connecting rod is provided with a thread; The limiting connecting plate is an L-shaped structure and is arranged on one side of the sixth connecting plate.

9. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The cutting assembly further comprises: a sleeve, the sleeve being fixedly sleeved on the rocker and passing through a side wall of the bone box away from the push rod; a second knob, which is provided on one end of the sleeve passing through the bone box, and is provided with a scale, and is used to adjust the lateral arc curvature of the cutting blade; The other end of the rocker passes through the sleeve, the outer side wall of the bone box and the second knob in sequence, and a grip is provided on the other end of the rocker.

10. The combined device for autologous bone harvesting and bone treatment according to claim 1, characterized in that: The cutting blade is a flat arc blade or a curved tooth blade.

Images