Straight-moving bone knife

Abstract

The utility model discloses a straight bone knife which comprises a knife head, a knife handle and a handle, the knife head comprises a knife edge, a transition section and a connecting section, the knife edge and the transition section are V-shaped, the connecting section is movably connected with the knife handle, the knife handle is movably connected with the handle, the knife handle is provided with a U-shaped groove, and the U-shaped groove is communicated with the U-shaped groove. The knife head connecting section is provided with a connecting block matched with the U-shaped groove of the knife handle, through holes are formed in the side edge of the connecting block and the side face of the U-shaped groove, pin shafts are arranged in the through holes, the osteotome has the function of adjusting the cutting depth and angle, a doctor can flexibly adjust the osteotome according to the operation requirement, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of orthopedic medical instruments, in particular to a straight osteotome. Background Art

[0002] With the rapid development of medical technology, the update and iteration of medical devices are crucial to surgical results and patient recovery. Among them, bone knives are indispensable tools in orthopedic surgery, and their design and performance directly affect the accuracy and efficiency of the surgery. Traditional bone knives are simple in design and single in function, and often cannot meet the needs of complex surgeries. Therefore, we have developed a new type of medical device bone knife, which aims to improve surgical results and relieve patient pain. Summary of the invention

[0003] In view of the above problems, the utility model aims to provide a straight bone knife.

[0004] A straight bone knife comprises a knife head, a knife handle and a handle, wherein the knife head comprises a blade, a transition section and a connecting section, the blade and the transition section are V-shaped, the connecting section is movably connected to the knife handle, and the knife handle is movably connected to the handle.

[0005] Preferably, the shank is provided with a U-shaped groove, the cutter head connecting section is provided with a connecting block matching with the U-shaped groove of the shank, the side edges of the connecting block and the side faces of the U-shaped groove are provided with through holes, and a pin is arranged in the through hole.

[0006] Preferably, a first turntable is provided on both sides of the connecting block, and two circular holes are provided on the surface of the first turntable. A second turntable is provided on the inner walls of both sides of the U-shaped groove, and a plurality of circular holes matching the surface of the first turntable are provided on the second turntable.

[0007] Preferably, a sliding groove is provided inside the handle, and a plurality of surfaces are provided on the outer wall of the handle which are slidably connected to the surface of the handle, and a limiting hole is provided on one of the surfaces. A through hole is provided at the tail end of the knife handle, and a limiting telescopic rod matching the limiting hole is installed in the through hole, and the limiting telescopic rod includes a fixed rod and a sliding rod slidably connected to the fixed rod, and a spring is provided between the fixed rod and the sliding rod.

[0008] Preferably, the distance between the two circular holes formed on the surface of the first rotating disk is greater than the diameter of the connecting block.

[0009] The beneficial effects of the utility model are:

[0010] 1. The bone knife has the function of adjusting the cutting depth and angle. The doctor can flexibly adjust it according to the surgical needs to improve the surgical efficiency.

[0011] 2. The blade 11 and the transition section 12 are V-shaped and cooperate with each other, which increases the cutting area, enables accurate removal of bones, and effectively reduces damage to surrounding tissues during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural sectional view of the utility model;

[0014] Figure 3 This is the connection structure diagram between the blade head and the handle;

[0015] Figure 4 for Figure 3 Middle partial enlarged picture;

[0016] Figure 5 It is a structural diagram of the first turntable and the second turntable;

[0017] Figure 6 It is the structural diagram of the limiting telescopic rod.

[0018] In the figure: 1, the cutter head 11, the blade 12, the transition section 13, the connecting section 131, the connecting block 2, the shank 21, the U-shaped groove 3, the handle 31, the limiting hole 4, the first turntable 5, the second turntable 6, the limiting telescopic rod 61, the fixing rod 62, the sliding rod 63, and the spring. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, the specific embodiment described in the utility model is aimed at the above-mentioned problem. The utility model aims to provide a straight bone knife, including a knife head 1, a knife handle 2 and a handle 3. The knife head 1 includes a blade 11, a transition section 12 and a connecting section 13. The blade 11 and the transition section 12 are V-shaped, which increases the cutting area, can realize accurate removal of bones, and effectively reduce damage to surrounding tissues during surgery. The connecting section 13 is movably connected to the knife handle 2, and the knife handle 2 is movably connected to the handle 3.

[0021] The handle 2 is provided with a U-shaped groove 21, and the connecting section 13 of the cutter head 1 is provided with a connecting block 131 that matches the U-shaped groove 21 of the handle 2. Through holes are provided on the side of the connecting block 131 and the side of the U-shaped groove 21, and a pin is arranged in the through hole. The cutter head 1 can rotate through the pin, the U-shaped groove 21 and the connecting block 131.

[0022] A first turntable 4 is provided on both sides of the connecting block 131. Two circular holes are provided on the surface of the first turntable 4. The first turntable 4 rotates along with the connecting block 131. Second turntables 5 are provided on the inner walls on both sides of the U-shaped groove 21. The second turntable 5 is fixed to the inner walls on both sides of the U-shaped groove 21 and does not rotate. A plurality of circular holes matching the surface of the first turntable 4 are provided on the second turntable 5. A through hole for the pin shaft to pass through is provided between the first turntable 4 and the second turntable 5.

[0023] A sliding groove is provided inside the handle 3, and is slidably connected to the surface of the handle 3. The outer wall of the handle 3 is provided with multiple surfaces, and a limiting hole 31 is provided on one of the surfaces. A through hole is provided at the tail end of the knife handle 2, and a limiting telescopic rod 6 that matches the limiting hole 32 is installed in the through hole. The limiting telescopic rod 6 includes a fixed rod 61 and a sliding rod 62 slidably connected to the fixed rod 61, and a spring 63 is provided between the fixed rod 61 and the sliding rod 62.

[0024] The sliding rod 62 protrudes from the through hole and extends to the outer wall of the limiting hole 32 .

[0025] The distance between the two circular holes on the surface of the first rotating disk 4 is greater than the diameter of the connecting block 131, and a pin is inserted to fix the rotating block.

[0026] Working principle:

[0027] The connecting block 131 of the cutter head 1 is connected with the U-shaped groove 21 of the handle 2, so that the first turntable 4 is aligned with the second turntable 5, and the pin is inserted to enable the cutter head 1 to rotate in the U-shaped groove 21. When angle adjustment is required, the two circular holes set on the surface of the first turntable 4 are aligned with the circular holes set on the surface of the second turntable 5, and pins are inserted into the two circular holes set on the surface of the first turntable 4 to fix the rotating block.

[0028] A through hole is provided at the tail end of the knife handle 2, and a limiting telescopic rod 6 matching the limiting hole 32 is installed in the through hole. By pressing the sliding rod 62, the spring 63 is squeezed to shrink into the through hole of the knife handle 2, and the knife handle 2 is moved in the handle 3 to adjust its length to a suitable position. The squeezing force on the spring 63 is released, driving the sliding rod 62 to extend outward to the outside of the limiting hole 32 set in the knife handle 2.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A straight bone knife, comprising a knife head (1), a knife handle (2) and a handle (3), characterized in that: The blade head (1) comprises a blade (11), a transition section (12) and a connecting section (13); the blade (11) and the transition section (12) are V-shaped; the connecting section (13) is movably connected to the blade handle (2); and the blade handle (2) is movably connected to the handle (3).

2. A straight bone knife according to claim 1, characterized in that: The knife handle (2) is provided with a U-shaped groove (21), the connecting section (13) of the knife head (1) is provided with a connecting block (131) matching with the U-shaped groove (21) of the knife handle (2), the side edge of the connecting block (131) and the side surface of the U-shaped groove (21) are provided with through holes, and a pin is arranged in the through hole.

3. A straight bone knife according to claim 2, characterized in that: A first turntable (4) is arranged on both sides of the connection block (131), and two circular holes are provided on the surface of the first turntable (4). A second turntable (5) is arranged on the inner walls of both sides of the U-shaped groove (21), and a plurality of circular holes are provided on the second turntable (5) that match the surface of the first turntable (4).

4. The straight osteotome according to claim 1, characterized in that: The handle (3) is provided with a sliding groove inside and is slidably connected to the surface of the handle (3); the outer wall of the handle (3) is provided with a plurality of surfaces, one of which is provided with a plurality of limiting holes (31); the tail end of the knife handle (2) is provided with a through hole and a limiting telescopic rod (6) matched with the limiting hole (32) is installed in the through hole; the limiting telescopic rod (6) comprises a fixed rod (61) and a sliding rod (62) slidably connected to the fixed rod (61); a spring (63) is provided between the fixed rod (61) and the sliding rod (62).

5. The straight bone knife according to claim 3, characterized in that: The distance between the two circular holes formed on the surface of the first rotating disk (4) is greater than the diameter of the connecting block (131).

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