Percutaneous guide plate for early femoral head necrosis scraping bone grafting

Abstract

The utility model provides a percutaneous guide plate for early femoral head necrosis scraping bone grafting, and relates to the technical field of medical instruments, the percutaneous guide plate comprises: a panel attached to a hip joint part of a human body; the panel comprises a front edge and a lower edge, the front edge is attached to the anterior superior spine, and the lower edge is attached to the thighbone greater trochanter; the connecting rod is used for guiding the puncturing tool; the guide needle can penetrate through the puncture channel; the two ends of the connecting rod are fixedly connected with the panel and the connecting rod respectively. The percutaneous guide plate for the early femoral head necrosis scraping bone grafting operation is simple in structure, easy to operate and high in stability, the correction function of the percutaneous guide plate can be achieved through sliding of the sliding piece in the sliding groove, lateral loads in the bending process are effectively eliminated, errors caused by lateral force are avoided, and the percutaneous guide plate is suitable for the early femoral head necrosis scraping bone grafting operation. And the accuracy and the reliability of a test result are ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a percutaneous guide plate for scraping and bone grafting in early femoral head necrosis. Background Technology

[0002] Avascular necrosis of the femoral head is caused by various factors leading to impaired blood circulation in the femoral head. Obstructed venous return results in insufficient arterial perfusion, leading to intraosseous hypertension and bone necrosis, ultimately causing joint destruction. Currently, the number of patients is surging, with alcoholic and hormone-induced avascular necrosis of the femoral head accounting for as much as 90%. It is most common in young and middle-aged adults and can affect multiple joints. Once diagnosed, without active and effective measures, more than 80% of patients will experience femoral head collapse and functional loss within 1 to 4 years, necessitating total joint replacement.

[0003] For early-stage avascular necrosis of the femoral head, curettage and bone grafting is one of the main clinical treatments. This surgery aims to remove necrotic bone tissue and implant a healthy bone graft to promote bone repair. However, due to the lack of external positioning devices, it is often difficult to accurately insert the guide pin into the ideal central position of the femoral head in one operation under anteroposterior and lateral fluoroscopy of the hip joint. Repeated manipulations during the operation to adjust the position of the guide pin in the anteroposterior and lateral views not only damage the bone structure within the femoral head but also increase the operation time and X-ray exposure for both medical staff and patients.

[0004] Therefore, it is of great significance to provide a percutaneous guide plate that can accurately locate the needle insertion point. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to solve the problem that the existing technology cannot provide a percutaneous guide plate that can accurately locate the needle entry point, this utility model provides a percutaneous guide plate for early femoral head necrosis curettage and bone grafting. This percutaneous guide plate can accurately locate the needle entry point, thereby reducing the number of times the patient has to undergo repeated radiation positioning during the operation and shortening the operation time.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A percutaneous guide plate for curettage and bone grafting in early-stage femoral head necrosis, comprising:

[0008] A panel is fitted to the hip joint of the human body; the panel includes a front edge and a lower edge, wherein the front edge is fitted to the anterior superior iliac spine and the lower edge is fitted to the greater trochanter of the femur;

[0009] Connecting rod, used to guide the puncture tool;

[0010] It also includes a puncture channel through which the guide needle can pass; both ends of the connecting rod are fixedly connected to the panel and the connecting rod, respectively.

[0011] Optionally, the transdermal guide plate is made of biocompatible material and is fabricated using a 3D printing process.

[0012] Optionally, the connecting rod has a C-shaped structure.

[0013] Optionally, the puncture channel has a pointed end close to the human skin and a flat end away from the human skin.

[0014] Optionally, the tip is located away from the connection between the connecting rod and the puncture channel, while the flat end is located near the connection between the connecting rod and the puncture channel.

[0015] Optionally, the panel is a wave-shaped panel that matches the shape of the skin surface of the human hip joint area.

[0016] Optionally, the thickness of the panel is 3-5 mm.

[0017] Optionally, the panel is provided with markings to indicate the applicable side of the guide plate.

[0018] The beneficial effects of this utility model are:

[0019] This invention relates to a percutaneous guide plate for early-stage femoral head necrosis curettage and bone grafting. The plate is highly compatible with the skin of the patient's hip joint, allowing for precise preoperative simulation of puncture and enabling accurate puncture in a single procedure. This avoids deviations in the needle insertion point, shortens positioning time, reduces the number of times the patient needs repeated radiation localization during surgery, and shortens the overall surgical time. Furthermore, the percutaneous guide plate is quick to manufacture and inexpensive, making it highly valuable for clinical application. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the right percutaneous guide plate used in early femoral head necrosis scraping and bone grafting in this utility model;

[0022] In the diagram: 1-panel; 11-leading edge; 12-lower edge; 13-marker; 2-connecting rod; 3-puncture channel; 31-tip; 32-flat end. Detailed Implementation

[0023] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] To address the problem in existing technologies of not being able to provide a percutaneous guide plate that can accurately locate the needle insertion point, this utility model provides a percutaneous guide plate for early-stage femoral head necrosis curettage and bone grafting. (See [reference]). Figure 1 As shown, the percutaneous guide plate includes: a panel 1, which is fitted to the hip joint of the human body; the panel 1 includes an anterior edge 11 and a lower edge 12, wherein the anterior edge 11 is fitted to the anterior superior iliac spine and the lower edge 12 is fitted to the greater trochanter of the femur; a connecting rod 2 for guiding the puncture tool; and a puncture channel 3 through which the guide needle can pass; the two ends of the connecting rod 2 are fixedly connected to the panel 1 and the connecting rod 2 respectively.

[0026] This invention relates to a percutaneous guide plate for early-stage femoral head necrosis curettage and bone grafting. The plate is highly compatible with the patient's hip joint skin, allowing for precise preoperative simulation and accurate single-pass puncture during surgery. This avoids deviations in the guide needle insertion point, shortens positioning time, and reduces the number of times the patient needs repeated radiation localization during surgery, thus shortening the overall surgical time. Furthermore, the percutaneous guide plate is quick and inexpensive to manufacture, possessing high clinical application value and being easy to promote and use. Moreover, this percutaneous guide plate can be combined with ceramic rod technology, making it suitable for minimally invasive surgery to treat femoral head necrosis, providing patients with a safer, more economical, and effective treatment option.

[0027] In this invention, the left percutaneous guide plate used for treating femoral head necrosis is mirror-symmetrical to the right percutaneous guide plate.

[0028] Specifically, this invention preferably uses a percutaneous surgical guide made of biocompatible materials, manufactured using 3D printing technology. It can be personalized based on the patient's individual CT scan and body surface scan data, ensuring a precise fit between the guide and the patient's hip joint skin. This personalized design not only improves surgical accuracy and patient comfort but also helps reduce errors during the procedure.

[0029] The preferred connecting rod 2 of this invention has a C-shaped structure, which allows doctors to operate the guide plate more stably and comfortably, thereby improving surgical efficiency.

[0030] To ensure that the puncture tool can accurately reach the predetermined puncture position, the puncture channel 3 of this invention preferably has a pointed tip 31 close to the human skin and a flat end 32 away from the human skin; the pointed tip 31 helps to conform to the human skin; furthermore, the pointed tip 31 is preferably away from the connection between the connecting rod 2 and the puncture channel 3, and the flat end 32 is close to the connection between the connecting rod 2 and the puncture channel 3.

[0031] The preferred panel 1 of this utility model is a wave-shaped panel, which matches the shape of the skin surface of the human hip joint, so that the guide plate can better fit the skin surface of the hip joint, enhancing the stability and positioning accuracy of the guide plate.

[0032] The preferred thickness of panel 1 in this utility model is 3-5mm.

[0033] The preferred panel 1 of this utility model is provided with a mark 13 to indicate the applicable side of the guide plate; the mark 13 on the panel 1 helps to quickly determine the correct direction of use of the guide plate, further improving the efficiency and safety of the operation.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A percutaneous guide plate for early femoral head necrosis curettage bone grafting, characterized in that, include: Panel (1) is attached to the hip joint of the human body; the panel (1) includes an anterior edge (11) and a lower edge (12), wherein the anterior edge (11) is attached to the anterior superior iliac spine and the lower edge (12) is attached to the greater trochanter of the femur; Connecting rod (2) is used to guide the puncture tool; And a puncture channel (3) through which the guide needle can pass; the two ends of the connecting rod (2) are fixedly connected to the panel (1) and the connecting rod (2) respectively.

2. The percutaneous guide for debridement and bone grafting of early stage femoral head necrosis according to claim 1, characterized in that, The transdermal guide plate is made of biocompatible material and is fabricated using a 3D printing process.

3. The percutaneous guide for debridement and bone grafting of early stage femoral head necrosis according to claim 1, wherein, The connecting rod (2) has a C-shaped structure.

4. The percutaneous guide for debridement and bone grafting of early stage femoral head necrosis according to claim 1, wherein, The puncture channel (3) has a pointed end (31) close to the human skin and a flat end (32) away from the human skin.

5. The percutaneous guide for debridement and bone grafting of early stage femoral head necrosis according to claim 4, characterized in that, The tip (31) is away from the connection between the connecting rod (2) and the puncture channel (3), and the flat end (32) is close to the connection between the connecting rod (2) and the puncture channel (3).

6. The percutaneous guide for debridement and bone grafting of early stage femoral head necrosis of claim 1, wherein, The panel (1) is a wave-shaped panel that matches the shape of the skin surface of the human hip joint.

7. The percutaneous guide for debridement and bone grafting of early femoral head necrosis according to claim 6, characterized in that, The thickness of the panel (1) is 3-5mm.

8. The percutaneous guide plate for early-stage femoral head necrosis curettage and bone grafting as described in claim 7, characterized in that, The panel (1) is provided with a mark (13) to indicate the applicable side of the guide plate.

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