A three-sided bone cutter structure

Abstract

The utility model discloses a three -sided formula bone knife structure, include: connecting seat, joint, the joint fixed setting in the upper end of connecting seat, handle, the lower extreme of handle with the upper end of joint is detachably connected, three -sided formula cutter body, three -sided formula cutter body setting in the lower end of connecting seat. Through the application of the utility model, provide a three -sided formula bone knife structure for taking bone, especially applicable to the acquisition operation of double cortex ilium, it can be realized in one insertion process smoothly intercepts double cortex bone piece, shortens the operation time and reduces the trauma to the patient, can carry out multidirectional cutting in the narrow bone surface area through three -sided formula design, reduces the demand of repeatedly changing sword or using other turning cutter, further improves the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a three-sided bone scalpel structure. Background Technology

[0002] In current orthopedic surgery, iliac crest bicortical bone harvesting is a common procedure, frequently performed during bone grafting. Single-edged osteotome tools are commonly used. However, traditional single-edged osteotome tools require repeated adjustments to the cutting direction during bone harvesting, making the procedure cumbersome and time-consuming, and prone to bone fragmentation or soft tissue damage. Furthermore, existing bone harvesting instruments often employ a fixed design with non-replaceable blades, leading to difficulties in cleaning and sterilization, further impacting surgical efficiency and safety. Utility Model Content

[0003] In view of this, and to solve the above problems, the purpose of this utility model is to provide a three-sided bone scalpel structure, comprising:

[0004] Connector;

[0005] A connector, which is fixedly disposed at the upper end of the connector base;

[0006] A handle, the lower end of which is detachably connected to the upper end of the connector;

[0007] The three-sided blade body is disposed at the lower end of the connecting seat;

[0008] The three-sided blade includes a first part, a second part, and a third part, which are connected in sequence. The upper ends of the first part, the second part, and the third part are all fixedly connected to the connecting seat. The lower ends of the first part, the second part, and the third part are all formed with a cutting edge.

[0009] In another preferred embodiment, the connector is arranged in a columnar structure, the connector is coaxially arranged with the handle, and the outer diameter of the handle is larger than the outer diameter of the connector.

[0010] In another preferred embodiment, one of the upper end of the connector and the lower end of the handle is provided with an internal thread, and the other of the upper end of the connector and the lower end of the handle is provided with an external thread, wherein the internal thread and the external thread are threadedly connected.

[0011] In another preferred embodiment, the connector is arranged in a rectangular shape.

[0012] In another preferred embodiment, the first portion, the second portion, and the third portion are all rectangular in shape.

[0013] In another preferred embodiment, an inclined surface is formed on the outer or inner side of the blade portion.

[0014] In another preferred embodiment, the inclined surface forms an angle with respect to the axis of the joint.

[0015] In another preferred embodiment, a chip removal groove is provided on the surface of the three-sided cutter body.

[0016] In another preferred embodiment, a force-bearing surface is formed at the upper end of the handle, and the force-bearing surface is perpendicular to the axis of the handle.

[0017] In another preferred embodiment, it further includes a buffer pad, which is fixedly disposed on the force-bearing surface.

[0018] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art:

[0019] By applying this utility model, a three-sided bone scalpel structure for bone harvesting is provided, which is particularly suitable for the harvesting of bicortical iliac bone. It can successfully cut bicortical bone blocks in a single insertion, shortening the operation time and reducing trauma to the patient. At the same time, the three-sided design allows for multi-directional cutting in a narrow bone surface area, reducing the need for repeated scalpel changes or the use of other rotating tools, further improving surgical efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a three-sided bone knife according to the present invention;

[0021] Figure 2 This is a partial schematic diagram of a three-sided bone knife structure according to the present invention.

[0022] In the attached image:

[0023] 1. Connector; 2. Connector; 3. Handle; 4. Three-sided blade; 5. First part; 6. Second part; 7. Third part; 8. Blade; 9. Inclined surface; 10. Chip removal groove; 11. Buffer pad. Detailed Implementation

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

[0025] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0027] like Figure 1 and Figure 2 The diagram illustrates a preferred embodiment of a three-sided bone scalpel structure, comprising: a connecting base 1; a connector 2 fixedly disposed at the upper end of the connecting base 1; a handle 3 detachably connected at its lower end to the upper end of the connector 2; and a three-sided blade 4 disposed at the lower end of the connecting base 1. Furthermore, the detachable connection between the connector 2 and the handle 3 allows for convenient replacement of the three-sided blade 4 as needed for actual surgical operations, facilitating replacement and disinfection maintenance. The handle 3 is used for gripping by the surgeon, and the three-sided blade 4 is used for cutting the bicortical iliac bone, preferably resulting in higher quality and survival rates of the obtained bicortical bone fragments.

[0028] Furthermore, in a preferred embodiment, the three-sided blade 4 includes a first part 5, a second part 6, and a third part 7, which are sequentially connected. The upper ends of the first part 5, the second part 6, and the third part 7 are all fixedly connected to the connecting seat 1. A cutting edge 8 is formed at the lower ends of the first part 5, the second part 6, and the third part 7. Further, the cutting edge 8 of the second part 6 serves as the primary cutting surface for cutting or penetrating the cortical bone, while the cutting edges 8 of the first part 5 and the third part 7 are used for lateral cutting or separation of the cortical bone.

[0029] Furthermore, as a preferred embodiment, the three-sided blade 4 is preferably made of medical-grade materials such as stainless steel, cobalt-chromium alloy, or titanium alloy.

[0030] Furthermore, as a preferred embodiment, the first part 5, the second part 6, and the third part 7 are arranged together in a U-shape along the horizontal direction.

[0031] Furthermore, as a preferred embodiment, the cross-sections of the first part 5, the second part 6, and the third part 7 along the vertical direction are all rectangular.

[0032] Furthermore, as a preferred embodiment, the cross-sections of the first part 5, the second part 6, and the third part 7 along the horizontal direction are all rectangular.

[0033] Furthermore, as a preferred embodiment, the vertical direction is preferably the axial direction of the handle 3, and the horizontal direction is preferably the radial direction of the handle 3.

[0034] Furthermore, in a preferred embodiment, the connector 2 is arranged in a columnar structure, the connector 2 is coaxially arranged with the handle 3, and the outer diameter of the handle 3 is larger than the outer diameter of the connector 2.

[0035] Furthermore, as a preferred embodiment, one of the upper end of the connector 2 and the lower end of the handle 3 is provided with an internal thread, and the other of the upper end of the connector 2 and the lower end of the handle 3 is provided with an external thread, wherein the internal thread and the external thread are threadedly connected.

[0036] Furthermore, as a preferred embodiment, the connecting seat 1 is arranged in a rectangular shape.

[0037] Furthermore, in a preferred embodiment, the first part 5, the second part 6, and the third part 7 are all rectangular in shape.

[0038] Furthermore, as a preferred embodiment, a triangular reinforcing structure is provided between the lower surface of the connecting seat 1 and the upper end of the inner surfaces of the first part 5, the second part 6 and the third part 7.

[0039] Furthermore, in a preferred embodiment, an inclined surface 9 is formed on the outer or inner side of the blade portion 8. Furthermore, the inclined surface 9 makes the lower edge of the blade portion 8 sharper and facilitates guiding the blade portion 8 into the corresponding bone location, thereby achieving precise bone cutting and reducing damage to surrounding tissues.

[0040] Furthermore, as a preferred embodiment, the inclined surface 9 is preferably as follows: Figure 2 The arrangement shown is gradually inclined downwards from the outside to the inside, or not shown is gradually inclined downwards from the inside to the outside.

[0041] Furthermore, as a preferred embodiment, the inclined surface 9 preferably has a certain curvature.

[0042] Furthermore, as a preferred embodiment, the inclined surface 9 forms an angle with respect to the axis of the joint 2. More preferably, this angle is between 30 and 45 degrees.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0044] Based on the above, this utility model also has the following embodiments:

[0045] In a further embodiment of this utility model, a chip removal groove 10 is provided on the surface of the three-sided blade 4. Furthermore, the chip removal groove 10 allows bone chips generated by the blade 8 during cutting to be discharged outwards, thereby reducing cutting resistance.

[0046] In a further embodiment of the present invention, the lower end of the chip removal groove 10 extends to the blade portion 8, and the upper end of the chip removal groove 10 extends upward.

[0047] In a further embodiment of the present invention, an inlet is formed at the lower end of the chip removal groove 10 at the inclined surface 9.

[0048] In a further embodiment of the present invention, the first part 5, the second part 6 and the third part 7 are each provided with at least one chip removal groove 10. Preferably, the first part 5, the second part 6 and the third part 7 are each provided with two chip removal grooves 10 on their outer or inner sides.

[0049] In a further embodiment of the present invention, a force-bearing surface is formed at the upper end of the handle 3, and the force-bearing surface is arranged perpendicular to the axis of the handle 3.

[0050] In a further embodiment of this utility model, a buffer pad 11 is further included, which is fixedly disposed on the force-bearing surface. Furthermore, the buffer pad 11 is configured to act as the force-bearing end when the handle 3 is struck, thereby optimizing the feel of control during striking.

[0051] In a further embodiment of the present invention, a downward recess is formed on the upper surface of the buffer pad 11.

[0052] In a further embodiment of this invention, at least one scale line is provided on the outer surface of the three-sided blade 4 along the vertical direction. Furthermore, the scale line allows the surgeon to observe the depth of incision in real time, thereby stopping further operation promptly when the predetermined depth is reached.

[0053] In a further embodiment of this utility model, an outward protrusion may be fixedly provided on the outer surface of the three-sided blade 4. The protrusion may be preset at a specified height position relative to the blade portion 8. Furthermore, the protrusion causes the three-sided blade 4 to stop moving after cutting to a specified depth because the protrusion abuts against the bone surface.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-sided bone scalpel structure, characterized in that, include: Connector; A connector, which is fixedly disposed at the upper end of the connector base; A handle, the lower end of which is detachably connected to the upper end of the connector; The three-sided blade body is disposed at the lower end of the connecting seat; The three-sided blade includes a first part, a second part, and a third part, which are connected in sequence. The upper ends of the first part, the second part, and the third part are all fixedly connected to the connecting seat. The lower ends of the first part, the second part, and the third part are all formed with a cutting edge.

2. The three-sided bone scalpel structure according to claim 1, characterized in that, The connector is arranged in a columnar structure and is coaxial with the handle. The outer diameter of the handle is larger than the outer diameter of the connector.

3. The three-sided bone scalpel structure according to claim 1, characterized in that, One of the upper end of the connector and the lower end of the handle is provided with an internal thread, and the other of the upper end of the connector and the lower end of the handle is provided with an external thread. The internal thread and the external thread are threadedly connected.

4. The three-sided bone scalpel structure according to claim 1, characterized in that, The connector is arranged in a rectangular shape.

5. The three-sided bone scalpel structure according to claim 1, characterized in that, The first part, the second part, and the third part are all rectangular in shape.

6. The three-sided bone scalpel structure according to claim 1, characterized in that, An inclined surface is formed on the outer or inner side of the blade.

7. The three-sided bone scalpel structure according to claim 6, characterized in that, The inclined surface forms an angle with respect to the axis of the joint.

8. The three-sided bone scalpel structure according to claim 1, characterized in that, The surface of the three-sided cutter body is provided with a chip removal groove.

9. The three-sided bone scalpel structure according to claim 1, characterized in that, The upper end of the handle has a force-bearing surface, which is perpendicular to the axis of the handle.

10. The three-sided bone scalpel structure according to claim 9, characterized in that, Also includes: A buffer pad is fixedly disposed on the force-bearing surface.

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