Bone cutting tool with positioning function

Abstract

The bone cutting tool comprises a main grab handle, one end of the main grab handle is vertically connected with an auxiliary grab handle, the other end of the main grab handle is connected with a positioning identification frame, and one end of the auxiliary grab handle is provided with an electric swing saw mechanism used for cutting. The positioning mark frame and the NDI equipment are used in a matched mode, real-time positioning is carried out on the pendulum data, and therefore higher stability and cutting precision are achieved, it is ensured that the cutting plane is smoother, the angle of each plane is easier to control, the influence of human factors in the operation process is reduced, and the safety and success rate of the operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of surgical tools, in particular to a bone cutting tool with positioning. BACKGROUND

[0002] The electric pendulum saw is a surgical tool used in orthopedic surgery, mainly used for cutting bones. Its cutting method is achieved by up and down vibration, which makes the incision smooth and the cutting speed fast, and is suitable for various orthopedic surgeries, such as spinal surgery, joint replacement surgery, bone cutting section surgery, fracture treatment, etc. In the electric pendulum saw, the eccentric shaft is mainly used to realize the oscillation function of the saw blade, which is connected with the connecting rod or other transmission components, so that the saw blade oscillates horizontally, increases the cutting speed, reduces the friction heat between the saw blade and the material, and helps to remove the debris generated during cutting. In addition, the eccentric shaft can also be used to balance the movement of the electric pendulum saw, and by setting appropriate eccentric weight, the vibration generated by the reciprocating movement of the saw blade can be offset, so that the sawing process is more stable. The design of the eccentric shaft also allows the adjustment of its eccentricity, so that the amplitude of the saw blade oscillation can be adjusted according to the needs of different cutting applications, optimizing the cutting performance, improving the work efficiency, and enhancing the comfort and safety of use.

[0003] For the above-mentioned related technology, the inventors believe that the following defects exist: the existing electric pendulum saw is all manually held, and the flatness of the cutting section and the relative angle of each plane all depend on the technical level of the doctor, so there is room for improvement. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the present application provides a bone cutting tool with positioning, which aims to solve the above problems.

[0005] A bone cutting tool with positioning, comprising a main handle, one end of the main handle is connected with a secondary handle perpendicularly, the other end is connected with a positioning identification frame, and one end of the secondary handle is installed with an electric pendulum saw mechanism for cutting.

[0006] By adopting the above technical scheme, the positioning identification frame and the NDI equipment are used together to realize real-time positioning of the pendulum saw, so as to have higher stability and cutting precision, ensure that the cutting plane is more smooth, and the angle of each plane is easier to control, which reduces the influence of human factors on the operation process and improves the safety and success rate of the operation.

[0007] Optionally, an installation block is connected to the outer side wall of the secondary handle, and a connecting interface for connecting with an external mechanical arm is formed in the installation block.

[0008] By adopting the above technical scheme, the connecting interface is connected with the external mechanical arm, so as to install the bone cutting tool on the mechanical arm, thereby increasing the stability of the bone cutting tool through the mechanical arm.

[0009] Optionally, a power interface is arranged on one side of the mounting block adjacent to the connecting interface.

[0010] Optionally, the electric swing saw mechanism comprises a housing mounted at one end of the auxiliary handle and a saw blade for cutting, the housing is internally provided with a positioning member and a pressing mechanism for fixing the saw blade, the pressing mechanism comprises a limiting pressure rod, a limiting knob, a connecting member, a jacking column and a limiting spring, one end of the connecting member is threadedly connected with the housing and the other end is threadedly connected with the limiting knob, the limiting pressure rod comprises a limiting pressure plate and a limiting rod connected with the limiting pressure plate, one end of the limiting rod away from the limiting pressure plate penetrates through the positioning member and extends into the connecting member, a connecting hole is formed in the connecting member for the limiting rod to extend into, one end of the limiting rod is connected with a limiting ring, the limiting spring is sleeved on the limiting rod, one end of the limiting spring abuts against the positioning member and the other end abuts against the limiting ring, the jacking column is connected with the limiting knob, the jacking column is clamped into the connecting hole, and one end of the jacking column is aligned with the limiting rod.

[0011] By adopting the above technical scheme, when the saw blade needs to be replaced, the limiting knob is rotated to move the limiting knob upward along the connecting member, the limiting knob drives the jacking column to move, the jacking column lifts the limiting rod, the limiting rod lifts the limiting pressure plate, so that the limiting pressure plate no longer presses the saw blade, and then the saw blade can be taken down and replaced.

[0012] Optionally, the positioning identification frame is connected with a fixing block, a fixing groove for clamping one end of the main handle is formed in the fixing block, the positioning identification frame is connected with the main handle through bolts, and a fixing hole for the bolts to penetrate through is formed in the bottom wall of the fixing groove.

[0013] By adopting the above technical scheme, when the positioning identification frame is installed, only one end of the main handle needs to be clamped into the fixing groove, then the bolts are inserted into the fixing hole and screwed into the main handle, so that the positioning identification frame is fixed on the main handle.

[0014] Optionally, the cross section of the auxiliary handle is polygonal.

[0015] By adopting the above technical scheme, the polygonal shape can make the palm more stable when gripping the auxiliary handle and is not easy to slip.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1. By using the positioning identification frame and the NDI equipment together, the swing is positioned in real time, so that the stability and cutting accuracy are higher, the cutting plane is more flat, and the angle of each plane is easier to control, which reduces the influence of human factors on the operation process and improves the safety and success rate of the operation.

[0018] 2, the connecting interface is connected with the external mechanical arm, so that the bone cutting tool is installed on the mechanical arm, and the stability of the bone cutting tool is increased through the mechanical arm.

[0019] 3, when the saw blade needs to be replaced, the limiting knob is rotated, the limiting knob is moved upward along the connecting piece, the limiting knob drives the jacking column to move, the jacking column lifts the limiting rod, the limiting rod lifts the limiting pressing plate, so that the limiting pressing plate no longer presses the saw blade, and then the saw blade is taken down and replaced.

[0020] 4, when installing the positioning identification frame, only one end of the main handle is clamped into the fixed groove, then the bolt is inserted into the fixed hole and screwed into the main handle, so that the positioning identification frame is fixed on the main handle. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the embodiment of the application.

[0022] Figure 2 is a structural schematic diagram of the positioning identification frame in the embodiment of the application.

[0023] Figure 3 is a sectional view of the electric swing saw mechanism in the embodiment of the application.

[0024] Figure 4 is a structural schematic diagram of the connecting piece and the limiting knob in the embodiment of the application.

[0025] Figure 5 is a structural schematic diagram of the positioning piece in the embodiment of the application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, main handle; 2, auxiliary handle; 21, mounting block; 211, connecting interface; 212, power supply interface; 3, positioning identification frame; 31, fixed block; 311, fixed groove; 312, fixed hole; 4, electric swing saw mechanism; 41, shell; 42, saw blade; 43, positioning piece; 44, limiting pressing rod; 441, limiting pressing plate; 442, limiting rod; 4421, limiting ring; 45, limiting knob; 46, connecting piece; 461, connecting hole; 47, jacking column; 48, limiting spring; 5, fastening screw. DETAILED DESCRIPTION

[0028] For the convenience of understanding the present application, the present application is described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used in the present specification are the same as the meanings commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the related listed items.

[0030] The embodiments of the present application disclose a bone cutting tool with positioning. Referring to Figure 1 and Figure 2 , a main handle 1 is provided, one end of the main handle 1 is fixedly connected with a secondary handle 2, the other end of the main handle 1 is detachably connected with a positioning mark frame 3, and one end of the secondary handle 2 is installed with an electric swing saw mechanism 4 for cutting. By using the positioning mark frame 3 in combination with an NDI device, the swing is positioned in real time, so that higher stability and cutting accuracy are achieved, the cutting plane is ensured to be more flat, and the angles of each plane are also easier to control, which reduces the influence of human factors on the operation process and improves the safety and success rate of the operation.

[0031] Referring to Figure 1 , a mounting block 21 is fixedly connected to the outer side wall of the secondary handle 2, a connecting interface 211 for connecting with an external mechanical arm is formed in the mounting block 21, and a power supply interface 212 is formed in one side of the mounting block 21 adjacent to the connecting interface 211. By connecting the connecting interface 211 with the external mechanical arm, the bone cutting tool is installed on the mechanical arm, and the stability of the bone cutting tool is increased by the mechanical arm.

[0032] Referring to Figure 1 and Figure 2 , a fixed block 31 is fixedly connected to the positioning mark frame 3, a fixed groove 311 for clamping one end of the main handle 1 is formed in the fixed block 31, the positioning mark frame 3 is connected with the main handle 1 through bolts, and a fixed hole 312 for the bolts to pass through is formed in the bottom wall of the fixed groove 311. When the positioning mark frame 3 is installed, only one end of the main handle 1 needs to be clamped into the fixed groove 311, then the bolts are inserted into the fixed hole 312 and screwed into the main handle 1, so that the positioning mark frame 3 is fixed on the main handle 1.

[0033] Reference Figure 1 The secondary handle 2 has a polygonal cross-section, which makes the hand more stable and less prone to slipping when gripping it. A control switch button for starting and stopping the electric oscillating saw is installed at the end of the secondary handle 2 furthest from the electric oscillating saw mechanism 4. The user holds the main handle 1 with their right hand and the secondary handle 2 with their left hand, pressing the switch button with their left thumb.

[0034] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 The electric swing saw mechanism 4 includes a housing 41 mounted on one end of the auxiliary handle 2 and a saw blade 42 for cutting. A positioning element 43 and a clamping mechanism for fixing the saw blade 42 are installed inside the housing 41. The clamping mechanism includes a limiting pressure rod 44, a limiting knob 45, a connecting piece 46, a lifting column 47, and a limiting spring 48. One end of the connecting piece 46 is threaded to the housing 41, and the other end is threaded to the limiting knob 45. A fastening screw 5 for pressing the connecting piece 46 is threaded onto the housing 41. The limiting pressure rod 44 includes a limiting pressure plate 441 and a limiting rod 442 fixedly connected to the limiting pressure plate 441. One end of the limiting rod 442, away from the limiting pressure plate 441, passes through the positioning element 43 and extends into the connecting piece 46. The connecting piece 46 has a connecting hole 461 for the limiting rod 442 to extend into. One end of the limiting rod 442 is fixedly connected to a limiting ring 4421. A limiting spring 48 is sleeved on the limiting rod 442, with one end of the limiting spring 48 pressing against the positioning member 43 and the other end pressing against the limiting ring 4421. The positioning member 43 has several protrusions fixed to one end facing the limiting pressure plate 441. One end of the saw blade 42 has grooves for the protrusions to be inserted. When installing the saw blade 42, the protrusions are inserted into the grooves, and then the limiting pressure plate 441 presses the saw blade 42 firmly, thus installing the saw blade 42. The lifting column 47 is fixedly connected to the limiting knob 45. The lifting column 47 is inserted into the connecting hole 461, with one end of the lifting column 47 aligned with the limiting rod 442. When the saw blade needs to be replaced, rotate the limit knob 45, causing it to move upward along the connecting piece 46. The limit knob 45 drives the lifting column 47 to move, which in turn lifts the limit rod 442. The limit rod 442 then lifts the limit pressure plate 441, thus removing the limit pressure plate 441 from pressing the saw blade 42, making it easier to remove and replace the saw blade 42. A drive component is installed inside the secondary handle 2. The drive component drives the positioning component 43 to rotate reciprocally via a swing fork, which in turn moves the saw blade 42.

[0035] The implementation principle of the positioning bone cutting tool in this application embodiment is as follows: by using the positioning mark frame 3 and the NDI device together, the tool is positioned in real time, thereby achieving higher stability and cutting accuracy, ensuring a flatter cutting plane, and making it easier to control the angles of each plane. This reduces the impact of human factors during the operation and improves the safety and success rate of the operation.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bone-cutting tool with positioning function, characterized in that: Includes a main handle (1), one end of which is vertically connected to a secondary handle (2) and the other end is connected to a positioning mark frame (3), and one end of the secondary handle (2) is equipped with an electric swing saw mechanism (4) for cutting; A mounting block (21) is connected to the outer side wall of the sub-grip (2), and the mounting block (21) is provided with a connection interface (211) for connecting with an external robotic arm; A power interface (212) is provided on one side of the mounting block (21) adjacent to the connection interface (211).

2. The bone-cutting tool with positioning function according to claim 1, characterized in that: The electric swing saw mechanism (4) includes a housing (41) installed at one end of the auxiliary handle (2) and a saw blade (42) for cutting. A positioning element (43) and a clamping mechanism for fixing the saw blade (42) are installed inside the housing (41). The clamping mechanism includes a limiting pressure rod (44), a limiting knob (45), a connecting piece (46), a lifting column (47), and a limiting spring (48). One end of the connecting piece (46) is threaded to the housing (41), and the other end is threaded to the limiting knob (45). The limiting pressure rod (44) includes a limiting pressure plate (441) and a limiting rod (442) connected to the limiting pressure plate (441). 442) The end away from the limiting pressure plate (441) passes through the positioning member (43) and extends into the connecting member (46). The connecting member (46) has a connecting hole (461) for the limiting rod (442) to extend into. One end of the limiting rod (442) is connected to a limiting ring (4421). The limiting spring (48) is sleeved on the limiting rod (442). One end of the limiting spring (48) abuts against the positioning member (43) and the other end abuts against the limiting ring (4421). The lifting column (47) is connected to the limiting knob (45). The lifting column (47) is inserted into the connecting hole (461). One end of the lifting column (47) is aligned with the limiting rod (442).

3. The bone-cutting tool with positioning function according to claim 1, characterized in that: The positioning mark frame (3) is connected to a fixing block (31), and a fixing groove (311) is provided on the fixing block (31) for one end of the main handle (1) to be inserted. The positioning mark frame (3) is connected to the main handle (1) by bolts, and a fixing hole (312) is provided on the bottom wall of the fixing groove (311) for the bolt to pass through.

4. The bone-cutting tool with positioning function according to claim 1, characterized in that: The cross-section of the sub-grip (2) is polygonal.

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