Ilium block implantation conveyor for arthroscopic surgery

Abstract

The utility model discloses an arthroscopic surgery iliac bone block imbedding conveyer, including left / right L guide plate, support, adjusting piece, left / right L guide plate on the support, the two guide plate involution constitutes iliac bone block transfer passage, the adjusting piece is provided on the adjusting support, and the adjusting piece is provided on the adjusting support. The folding distance between the left L-shaped guide plate and the right L-shaped guide plate is adjusted by shifting the adjusting piece so as to change the cross section size of the channel. According to the conveyor, the size of the cross section of the channel can be adjusted, the conveyor is suitable for implantation of iliac blocks of different specifications, complex multi-layer soft tissue can be pushed aside, the iliac blocks are rapidly and accurately conveyed to the scapula glenoid bone defect position, and it is ensured that the iliac blocks are accurately fixed so that better healing can be achieved. Due to the design of the conveyor, the time of an iliac block implantation operation is obviously shortened, side injuries and complications caused by the tedious operation process are reduced, and better prognosis of a patient is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to an iliac bone block placement delivery device for arthroscopic surgery. Background Technology

[0002] Shoulder instability can lead to varying degrees of pathological changes in soft tissues and bones, including the joint capsule, glenohumeral ligament, labrum, and glenoid fossa. In recent years, more and more scholars have begun to focus on the assessment of bone defects, rather than solely on soft tissue injuries, because in cases of severe glenoid bone defects, repairing only the soft tissues has a high failure rate. Currently, it is generally accepted that bone augmentation surgery, such as coracoid process transposition or iliac bone grafting, is appropriate for glenoid bone defects of 20%–25% or more. Iliac bone grafting has a history of over 100 years and its efficacy is well-established. Traditionally, iliac bone grafting is performed through open surgery; however, with the widespread adoption of arthroscopic techniques, some scholars have attempted to perform this surgery arthroscopically. However, the lack of specialized endoscopic instruments makes arthroscopic iliac bone grafting extremely difficult.

[0003] After the iliac bone fragment is prepared, it needs to be transported from outside the body to the joint cavity via an arthroscopic approach. Due to the many layers of soft tissue in the shoulder, the standard arthroscopic approach incision is too small to allow for placement. Even if the incision is enlarged, it is often time-consuming and laborious to adjust the position of the iliac bone fragment, which also causes greater trauma and defeats the purpose of minimally invasive surgery. Therefore, there is an urgent need to develop a dedicated iliac bone fragment placement delivery device to help the iliac bone fragment be accurately and quickly transported from outside the body to the predetermined position in the joint cavity. Utility Model Content

[0004] This invention provides an iliac bone graft placement delivery device for arthroscopic surgery, which solves the problems of difficult iliac bone graft placement and significant trauma in existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An iliac bone graft delivery device for arthroscopic surgery includes a left L-guide plate, a right L-guide plate, a support, and an adjusting component. The left and right L-guide plates are mounted on the support and form a bone graft delivery channel for the iliac bone graft. The adjusting component is disposed on an adjusting support, and the cross-sectional size of the iliac bone graft delivery channel is adjusted by moving the adjusting component to adjust the mating distance between the left and right L-guide plates.

[0007] Furthermore, the left L-guide plate and / or the right L-guide plate are provided with scale lines for measuring the depth of the iliac bone.

[0008] Furthermore, the bracket is configured as a left bracket and a right bracket, and the upper end of the left bracket and the right bracket are provided with threaded holes, and the adjusting component is an adjusting screw that passes through the threaded holes.

[0009] Furthermore, a scale is fixedly installed on the right bracket, and the other end of the scale is located in a slot fixedly installed on the left bracket, allowing the scale to slide within the slot.

[0010] Furthermore, a guide rod is fixedly installed at the lower end of the right bracket, and a mounting hole is provided at the lower end of the left bracket, allowing the left bracket to slide along the guide rod installed in the mounting hole.

[0011] Furthermore, the cross-sections of the left L-shaped guide plate and the right L-shaped guide plate are L-shaped, and the two L-shaped guide plates together form an insertion channel for the iliac bone.

[0012] As a further optimization of this utility model, a second connector is fixedly installed on the left bracket, and a left L-shaped guide plate is fixedly installed on the second connector; a first connector is fixedly installed on the right bracket, and a right L-shaped guide plate is fixedly installed on the first connector.

[0013] Furthermore, a top rod is slidably installed in the insertion channel, with a handle at one end and an anti-slip protrusion on the end face of the other end.

[0014] In this invention, the surgeon can easily adjust the cross-sectional size of the bone graft placement channel by means of an adjustable component on the support to accommodate iliac bone grafts of different sizes and shapes, ensuring the accuracy and safety of placement. The advantage of this design lies in its high flexibility and adaptability. The adjustable component allows the delivery system to meet diverse surgical needs; whether the iliac bone graft is of a moderate size or a unique shape, it can be perfectly adapted by adjusting the cross-sectional size of the bone graft placement channel. The placement channel also ensures that the iliac bone graft reaches the predetermined fixed position precisely through the soft tissue in front of the glenoid fossa, greatly improving the efficiency and success rate of the surgery.

[0015] From a treatment perspective, the application of this iliac bone graft delivery device significantly improves surgical precision and patient outcomes. Because it ensures precise implantation of the iliac bone graft into the predetermined location, it contributes to better bone healing and functional recovery. Furthermore, its design reduces surgical trauma and complications, providing patients with a better treatment experience and a faster recovery process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure at angle one;

[0018] Figure 3 for Figure 1 Schematic diagram of angle two;

[0019] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0020] In the diagram, 1-right bracket, 2-1-right L-guide plate, 2-2-left L-guide plate, 3-guide rod, 4-adjusting screw, 5-left bracket, 6-pin, 7-connector one, 8-connector two, 9-scale line, 10-scale ruler, 11-slot, 12-top rod, 13-top rod, 14-handle, 15-anti-slip protrusion. Detailed Implementation

[0021] like Figures 1-4 As shown, an iliac bone graft delivery device for arthroscopic surgery includes a left L-shaped guide plate 2-2, a right L-shaped plate 2-1, a support, and an adjusting component. The left L-shaped guide plate 2-2 and the right L-shaped plate 2-1 are mounted on the support, forming a bone graft delivery channel 2 for the iliac bone graft. In this embodiment, the cross-section of the left L-shaped guide plate 2-2 and the right L-shaped plate 2-1 is L-shaped, i.e., the adjusting component of the L-shaped left L-shaped guide plate 2-2 and the right L-shaped plate 2-1 is set on the adjusting support. The cross-sectional size of the iliac bone graft delivery channel is adjusted by moving the adjusting component to adjust the mating distance between the left L-shaped guide plate and the right L-shaped guide plate. The adjusting component of this delivery device is set on the support. By finely adjusting this adjusting component, the surgeon can easily adjust the cross-sectional size of the bone graft delivery channel to accommodate iliac bone grafts of different sizes and shapes. This adjustability not only improves the applicability of the delivery device but also greatly enhances its flexibility and practicality during surgery.

[0022] A scale line 9 for measuring the depth of iliac bone insertion is provided on the left L-guide plate 2-2, allowing the surgeon to visually judge the depth of the iliac bone block during implantation, thereby ensuring the accuracy and safety of the implantation. The support consists of a left support 5 and a right support 1, both with threaded holes at their upper ends. In this embodiment, the adjusting component is an adjusting screw 4 passing through the threaded hole. This design allows the adjusting screw 4 to withstand large axial forces and torques while maintaining high precision. Alternatively, other devices that can change the cross-sectional size of the bone block insertion channel, such as a sliding plate or a pneumatic adjustment device, can be used. This design versatility provides surgeons with more options to meet the needs of different surgical scenarios.

[0023] A scale 10 is fixedly mounted on the right support, with its other end located within a slot 11 fixedly mounted on the left support, allowing the scale to slide within the slot 11. The other end of the scale 10 is embedded in a specially designed slot on the left support. This design enables the scale to slide smoothly and precisely within the slot, providing not only an intuitive visual reference but also significantly improving the accuracy and convenience of the operation. By observing the scale readings, the surgeon can quickly and accurately determine and adjust the size of the bone graft insertion channel, thereby ensuring the smooth and precise implantation of the iliac bone graft, greatly improving the efficiency and safety of the surgery.

[0024] A guide rod 3 is fixedly installed at the lower end of the right bracket 1, and an installation hole is provided at the lower end of the left bracket 5, which can slide along the guide rod 3 installed in the installation hole.

[0025] A second connector 8 is fixedly installed on the left support 5, and a left L-shaped guide plate 2-2 is fixedly installed on the second connector 8; a first connector 7 is fixedly installed on the right support 1, and a right L-shaped plate 2-1 is fixedly installed on the first connector 7. The first connector 7 and the second connector 8 are respectively fixed to the supports by pins 6. A push rod 13 is slidably installed in the insertion channel. One end of the push rod 13 has a handle 14, and the other end has an anti-slip protrusion 15. When the iliac bone block is obstructed during insertion into the predetermined position anterior to the glenoid cavity of the joint cavity, the push rod 13 can be used to assist its forward movement.

[0026] The use and working principle of this utility model are as follows:

[0027] During the surgery, the surgeon first adjusted the left and right L-shaped plates of the delivery device to their minimum size. Then, under arthroscopic guidance, the delivery device was placed in the predetermined bone graft position anterior to the glenoid fossa via an anterior approach, carefully separating the anterior soft tissue and adhering closely to the glenoid bone defect. Next, the surgeon adjusted the size of the delivery device interface according to the size of the iliac bone graft interface. The glenoid bone tunnel traction suture was retrieved through the delivery device channel. The elastic fixation suture and anterior anti-rotation suture of the iliac bone graft were pulled out from the bone tunnel posteriorly through the traction suture. Then, by pulling the suture and using a push rod to push, the iliac bone graft was delivered and placed in the predetermined position anterior to the glenoid fossa within the joint cavity. A miniature steel plate was inserted through the elastic fixation suture for fixation, and the anti-rotation suture was used to suture the anterior labral tissue.

[0028] This utility model, when used in conjunction with two other utility models, has the following advantages.

[0029] 1. Integrated Design. This invention, along with two other utility models, covers all key aspects of the entire surgical process for autologous iliac bone grafting to the glenoid cavity. The entire process utilizes specialized surgical instruments, forming an integrated design. Surgeons can complete all surgical steps simply by following the instrument operation manual.

[0030] 2. Standardized Operation. Performing autologous iliac bone graft surgery of the glenoid fossa requires manual operation or the use of simple instruments if specialized surgical instruments are unavailable. This demands a high level of skill from the surgeon, is subjective, and results in unstable surgical pathways and poor repeatability. This invention, along with two other supporting inventions, standardizes each important surgical step, effectively reducing human error.

[0031] 3. Considerations for universality. This utility model and its two accompanying utility models are based on arthroscopic minimally invasive surgery design. The instrument design places greater emphasis on precision and accuracy. All instruments have mm graduations and can be seamlessly integrated with existing arthroscopic minimally invasive surgery instruments and consumables. For example, a small oscillating saw can be used for osteotomy, an exchange rod can be used to enter and exit the joint approach, a hollow needle with a limited depth can be used to remove the inner core, PDS sutures or metal guide wires can be used for suture fixation of transplanted iliac bone blocks, and a miniature steel plate can be used for suture fixation.

Claims

1. An iliac bone block placement delivery device for arthroscopic surgery, characterized by, The application relates to a left L guide plate, a right L guide plate, a support, and an adjusting piece, wherein the left L guide plate and the right guide plate are installed on the support, the left L guide plate and the right L guide plate are closed to form an implantation channel of an iliac bone block, the adjusting piece is arranged on the adjusting support, the distance between the left L guide plate and the right L guide plate is adjusted by rotating the adjusting piece, and the section size of the iliac bone block conveying channel is adjusted.

2. The iliac crest block placement delivery device of claim 1, wherein, Scale lines for measuring the depth of the iliac bone are arranged on the left L guide plate and / or the right L guide plate.

3. The iliac crest block placement delivery device of claim 2, wherein, The support is arranged as a left support and a right support, screw holes are arranged at the upper ends of the left support and the right support, and the adjusting piece is an adjusting screw rod penetrating the screw holes.

4. The iliac crest block placement delivery system of claim 3, wherein, A scale ruler is fixedly installed on the right support, the other end of the scale ruler is located in a clamping groove fixedly installed on the left support, and the scale ruler can slide in the clamping groove.

5. The iliac crest block placement delivery system of claim 4, wherein the at least one bone screw is configured to be inserted into the iliac crest block and into the ilium of the patient. A guide rod is fixedly installed at the lower end of the right support, and a mounting hole is arranged at the lower end of the left support, so that the left support can slide along the guide rod installed in the mounting hole.

6. The iliac crest block placement delivery system of claim 5, wherein, The sections of the left L guide plate and the right L guide plate are in L shapes, and the implantation channel of the iliac bone is formed by closing the two L-shaped guide plates.

7. The iliac crest block placement delivery system of claim 6, wherein, A connecting piece two is fixedly installed on the left support, and a left L guide plate is fixedly installed on the connecting piece two; and a connecting piece one is fixedly installed on the right support, and a right L guide plate is fixedly installed on the connecting piece one.

8. The iliac crest block placement delivery system of claim 6, wherein, A top rod is slidingly installed in the implantation channel, a handle is arranged at one end of the top rod, and an anti-skid convex is arranged on the end face of the other end of the top rod.

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