A bone plug molding tool for packing a femoral intramedullary positioning hole

Abstract

The utility model belongs to the medical and health technical field, especially a bone bolt plastic tool for filling femoral intramedullary positioning hole, first handle is included, the utility model discloses a tool is composed of first handle, second handle, pin shaft, first spring piece and second spring piece, and first handle and second handle are fixed together simply and conveniently, can replace the fixing of traditional rivet, makes the instrument simple, and use is more convenient, the anti -skidding strip on first handle and second handle, first spring piece and second spring piece keep the hand feeling of doctor use, through the bite cooperation of anti -skid groove and triangular block, will carry out extrusion and plastic to bone bolt, makes its form gradually tend to the original form of femoral intramedullary positioning hole, can shape the bone bolt that matches with femoral intramedullary positioning hole, not only has improved the operation efficiency, also avoided a series of complications of bone bolt incomplete covering, thereby solved the problem of bone bolt preparation by hand finishing, improved the operation efficiency and reduced the operation time.

Description

Technical Field

[0001] This utility model relates to the field of medical and health technology, specifically to a bone plug shaping tool for filling the positioning hole in the femoral medulla oblongata. Background Technology

[0002] Total knee arthroplasty (TKA) is a reliable and effective treatment for end-stage knee osteoarthritis, significantly relieving knee pain symptoms and improving knee function. Literature reports that postoperative blood loss in TKA can reach 1000–1500 mL. Excessive bleeding may lead to hematoma formation within the wound or joint cavity, increasing the risk of infection; it can also worsen postoperative swelling and pain, affecting knee function recovery; and it increases the rate of allogeneic blood transfusions, transfusion-related risks, and medical costs. The main sources of bleeding during TKA include bleeding from the femoral and tibial osteotomy surfaces, bleeding from the femoral medullary positioning foramen, and bleeding from soft tissues after release. After prosthesis placement, careful hemostasis is performed using electrocautery, with the femoral medullary positioning foramen becoming the primary source of postoperative bleeding. Intraoperative closure of the reamed femoral medullary cavity with bone plugs can significantly reduce postoperative bleeding.

[0003] However, current methods for preparing bone plugs to fill the medullary cavity have the following drawbacks: bone plugs prepared by hand often fail to fully cover the positioning holes in the matching femoral medullary cavity due to poor shaping. This not only results in unsatisfactory hemostasis but also allows intramedullary bleeding to flow into the femoral medullary cavity, increasing the risk of vascular embolism. Therefore, we propose a bone plug shaping tool for filling the positioning holes in the femoral medullary cavity to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a bone plug shaping tool for filling intramedullary positioning holes in the femoral bone marrow, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A bone plug molding tool for filling intramedullary positioning holes in the femoral spine includes a first handle, a second handle rotatably connected to the first handle, a first connecting part on the first handle, a second connecting part on the second handle, mounting holes on both the first and second connecting parts, a common pin on both mounting holes, and stops welded to both ends of the pin, a rectangular block fixedly connected to one side of the top of the first handle, the rectangular block having multiple anti-slip grooves, a cylindrical sleeve fixedly connected to the top of the second handle, a plurality of triangular blocks fixedly connected to one end of the cylindrical sleeve in an annular shape, the triangular blocks cooperating with the anti-slip grooves, a first spring plate fixedly connected to one side of the first handle, the first spring plate having a locking part, a second spring plate fixedly connected to one side of the second handle, the second spring plate having a locking groove, the locking groove engaging with the locking part.

[0009] Furthermore, multiple anti-slip strips are fixedly connected to the other side of both the first and second grips.

[0010] Furthermore, both the first grip and the second grip are made of high-strength, corrosion-resistant alloy materials.

[0011] Furthermore, the diameter of the pin is smaller than the diameter of the mounting hole, and the surface of the pin is smoothed.

[0012] Furthermore, the anti-slip grooves on the rectangular block are serrated.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a bone plug shaping tool for filling the intramedullary positioning hole of the femoral bone marrow, which has the following beneficial effects:

[0015] This invention relates to a tool composed of a first handle, a second handle, a pin, a first spring plate, and a second spring plate. The first and second handles are easily and conveniently fixed together, replacing traditional rivet fixation. This simplifies the instrument and makes it more convenient to use. The anti-slip strips on the first and second handles, along with the first and second spring plates, maintain a comfortable grip for the surgeon. Furthermore, during tool use, the rectangular block on the first handle has an anti-slip groove, which engages with the cylindrical sleeve on the second handle, which has multiple triangular blocks that interlock. This interlocking action compresses and shapes the bone plug, gradually bringing its form closer to the original shape of the femoral medullary cavity positioning hole. This allows for the shaping of a bone plug that matches the femoral medullary cavity positioning hole, improving surgical efficiency and avoiding a series of complications caused by incomplete bone plug coverage. This solves the problem of manually preparing bone plugs, improving surgical efficiency and reducing surgical time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the first grip of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the second grip of this utility model;

[0019] Figure 4 This is a partial three-dimensional structural diagram of the present invention;

[0020] Figure 5 This is a three-dimensional structural diagram of the first spring sheet of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the second spring sheet of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the connection between the pin and the stop block of this utility model.

[0023] In the diagram: 1. First grip; 2. Second grip; 3. First connecting part; 4. Second connecting part; 5. Mounting hole; 6. Pin; 7. Stop block; 8. Rectangular block; 9. Anti-slip groove; 10. Cylindrical sleeve; 11. Triangular block; 12. First spring plate; 13. Engaging part; 14. Second spring plate; 15. Slot; 16. Anti-slip strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figure 1-7As shown, an embodiment of this utility model discloses a bone plug molding tool for filling intramedullary positioning holes in the femoral bone marrow. It includes a first handle 1, a second handle 2 rotatably connected to the first handle 1, a first connecting part 3 on the first handle 1, and a second connecting part 4 on the second handle 2. Both the first connecting part 3 and the second connecting part 4 have mounting holes 5, and the two mounting holes 5 have the same pin 6. Both ends of the pin 6 are welded with stops 7. A rectangular block 8 is fixedly connected to one side of the top of the first handle 1, and the rectangular block 8 has multiple anti-slip grooves 9. A cylindrical sleeve 10 is fixedly connected to the top of the second handle 2, and one end of the cylindrical sleeve 10 is annularly fixedly connected with multiple triangular blocks 11, which cooperate with the anti-slip grooves 9. A first spring plate 12 is fixedly connected to one side of the first handle 1, and the first spring plate 12 has a locking part 13. A second spring plate 14 is fixedly connected to one side of the second handle 2, and the second spring plate 14 has a locking groove 15. The tool, consisting of a first handle 1, a second handle 2, a pin 6, a first spring plate 12, and a second spring plate 14, is engaged with the locking part 13. This simple and convenient method of fixing the first handle 1 and the second handle 2 together replaces the traditional rivet fixation, simplifying the instrument and making it more convenient to use. The anti-slip strips 16, first spring plate 12, and second spring plate 14 on the first handle 1 and the second handle 2 maintain the feel of the doctor's hand. At the same time, when using the tool, the anti-slip groove 9 on the rectangular block 8 on the first handle 1 and the multiple triangular blocks 11 fixedly installed on the cylindrical sleeve 10 on the second handle 2 engage with each other. This engagement compresses and shapes the bone plug, gradually bringing its shape closer to the original shape of the femoral medullary cavity positioning hole. It can shape a bone plug that matches the femoral medullary cavity positioning hole, which not only improves surgical efficiency but also avoids a series of complications caused by incomplete bone plug coverage. This solves the problem of manually trimming and preparing bone plugs, improves surgical efficiency, and reduces surgical time.

[0027] In some embodiments, multiple anti-slip strips 16 are fixedly connected to the other side of the first grip 1 and the second grip 2. The anti-slip strips 16 can significantly increase the friction between the hand and the grip, enabling the doctor to hold the tool more stably during the operation and reduce operational errors caused by hand slippage.

[0028] In some embodiments, the first grip 1 and the second grip 2 are both made of high-strength, corrosion-resistant alloy materials to ensure the durability and reliability of the tool during use.

[0029] In some embodiments, the diameter of the pin 6 is smaller than the diameter of the mounting hole 5, and the surface of the pin 6 is smoothed to reduce the rotational resistance of the pin 6 in the mounting hole 5 and facilitate the smooth rotation of the second grip 2 relative to the first grip 1.

[0030] In some embodiments, the anti-slip groove 9 on the rectangular block 8 is serrated, and the anti-slip groove 9 interlocks with the triangular block 11 to form a bone plug that matches the femoral medullary cavity positioning hole.

[0031] The working principle or structural principle of the tool is as follows: During use, the tool consists of a first handle 1, a second handle 2, a pin 6, a first spring plate 12, and a second spring plate 14. The first handle 1 and the second handle 2 are easily and conveniently fixed together, replacing traditional rivet fixation, simplifying the instrument and making it more convenient to use. The anti-slip strips 16 on the first handle 1 and the second handle 2, along with the first spring plate 12 and the second spring plate 14, maintain the feel for the doctor. Simultaneously, when using the tool, the anti-slip grooves 9 on the rectangular block 8 of the first handle 1 and the cylindrical sleeve 10 of the second handle 2 are fixed together, interlocking with each other. This interlocking action compresses and shapes the bone plug, gradually bringing its shape closer to the original shape of the femoral medullary cavity positioning hole. This allows for the shaping of a bone plug that matches the femoral medullary cavity positioning hole, not only improving surgical efficiency but also avoiding a series of complications caused by incomplete bone plug coverage. This solves the problem of manually preparing bone plugs, improving surgical efficiency and reducing surgical time.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bone plug shaping tool for filling intramedullary positioning holes in the femoral medulla oblongata, comprising a first handle (1), characterized in that: A second grip (2) is rotatably connected to the first grip (1). The first grip (1) has a first connecting part (3), and the second grip (2) has a second connecting part (4). Both the first connecting part (3) and the second connecting part (4) have mounting holes (5). The two mounting holes (5) have the same pin (6). Both ends of the pin (6) are welded with stops (7). A rectangular block (8) is fixedly connected to one side of the top of the first grip (1). The rectangular block (8) has multiple anti-slip grooves (9). The second grip (2) has a first connecting part (3) and a second connecting part (4). A cylindrical sleeve (10) is fixedly connected to the top of the grip (2). A plurality of triangular blocks (11) are fixedly connected to one end of the cylindrical sleeve (10) in an annular shape. The triangular blocks (11) cooperate with the anti-slip groove (9). A first spring plate (12) is fixedly connected to one side of the first grip (1). The first spring plate (12) is provided with a locking part (13). A second spring plate (14) is fixedly connected to one side of the second grip (2). The second spring plate (14) is provided with a slot (15). The slot (15) is engaged with the locking part (13).

2. The bone plug shaping tool for filling intramedullary positioning holes in the femoral medulla according to claim 1, characterized in that: Multiple anti-slip strips (16) are fixedly connected to the other side of the first grip (1) and the second grip (2).

3. The bone plug shaping tool for filling intramedullary positioning holes in the femoral medulla according to claim 2, characterized in that: The first grip (1) and the second grip (2) are both made of high-strength, corrosion-resistant alloy materials.

4. The bone plug shaping tool for filling intramedullary positioning holes in the femoral medulla according to claim 3, characterized in that: The diameter of the pin (6) is smaller than the diameter of the mounting hole (5), and the surface of the pin (6) is smoothed.

5. A bone plug shaping tool for filling intramedullary positioning holes in the femoral medulla as described in claim 4, characterized in that: The anti-slip groove (9) on the rectangular block (8) is serrated.

Images