Multifunctional orthopedic saw for orthopedic surgery

Abstract

The application discloses a multifunctional orthopedic saw for orthopedic surgery, which comprises an orthopedic saw body, a trigger guard assembled on a trigger mounting area of the orthopedic saw body, a finger buckle assembled on the trigger of the orthopedic saw body, a sliding block slidingly arranged on the length direction of the trigger guard, a limiting rod vertically slidingly penetrating through the finger buckle, the upper end of the limiting rod vertically slidingly matched with the sliding block, a limiting boss arranged on the trigger guard, and the limiting boss abuttingly matched with the limiting rod. The multifunctional orthopedic saw for orthopedic surgery is provided, the elastic reset member arranged at the bottom end of the limiting rod is in an arc state when not operated, so that a continuous downward pulling force is applied to the limiting rod, the limiting boss on the trigger guard is kept in abutment and limiting, the stroke of the finger buckle moving inward is locked, the finger buckle is prevented from pressing the trigger, the equipment is prevented from being accidentally started under the working conditions of instrument transmission and hand slipping, and the operation safety is improved.

Description

Technical Field

[0001] This invention relates to the field of orthopedic saw technology, and more specifically to a multifunctional orthopedic surgical saw. Background Technology

[0002] Orthopedic saws are specialized instruments for orthopedic osteotomy and bone reshaping surgeries. They are classified into manual orthopedic saws and electric orthopedic saws according to their power source. Manual orthopedic saws are driven by human power and are suitable for small and delicate osteotomy surgeries. Electric orthopedic saws have a built-in motor that drives the saw blade to oscillate at high frequency, resulting in higher cutting efficiency. They are widely used in various large and medium-sized orthopedic surgeries, and the mainstream structure is a handheld oscillating saw.

[0003] The handheld electric orthopedic saw has a T-shaped layout, including the main unit, the front plug, and a long rectangular handle. The handle area has a button-type trigger that controls the start and stop of the saw blade. During clinical operation, the physician holds the handle with one hand and pulls the trigger inward with his finger to start the internal motor, which drives the front swing saw to swing back and forth. When the finger is released, the trigger returns to its original position under the internal spring, and the saw blade stops working simultaneously. The entire process is controlled by the action of pulling the trigger with the finger to start and stop the device.

[0004] The trigger of the aforementioned electric orthopedic saw is completely exposed, without any front-mounted limiting or blocking structure, and it does not have an independent front-mounted mechanical anti-accidental triggering structure. In scenarios such as instrument transfer, adjustment of the surgical area, instrument placement, and slippage of the surgeon's hand during surgery, foreign objects or hands can easily directly impact or squeeze the exposed trigger. The device can be started directly without any prior operation, and there is no prior unlocking condition required to trigger the device. This results in a high risk of accidental activation and poor overall safety of the machine during surgery. Summary of the Invention

[0005] In view of the above-mentioned problems existing in the prior art, one aspect of the present invention is to provide a multifunctional orthopedic surgical saw to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides a multifunctional orthopedic surgical saw, comprising an orthopedic saw body, and further comprising: a trigger guard, which is mounted on the trigger mounting area of ​​the orthopedic saw body; a finger catch, which is mounted on the trigger of the orthopedic saw body; a slider slidably disposed along the length direction of the trigger guard; a limiting rod, which is vertically slidably disposed through the finger catch, the upper end of the limiting rod being vertically slidably engaged with the slider; a limiting boss, which is disposed on the trigger guard, the limiting boss abutting against the limiting rod; and an elastic reset member, which is disposed on... The bottom end of the limiting rod abuts against the finger buckle; an intersecting clamp-type adaptive triggering component is disposed on the finger buckle, the intersecting clamp-type adaptive triggering component includes a first clamp and a second clamp that are cross-hinged; the first clamp and the second clamp are respectively provided with a first arc clamp and a second arc clamp at the end facing the finger buckle inlet; the plates of the first clamp and the second clamp are both abutting against the elastic reset member, when the finger buckle is fastened, the two clamps rotate crosswise around the hinge point, and the plates synchronously squeeze the elastic reset member to generate deformation, which drives the limiting rod to slide upward.

[0007] Preferably, the trigger is a button, and the finger clip is a circular structure connected to the button.

[0008] Preferably, the trigger guard has an overall concave structure, and the width of the trigger guard is greater than the width of the finger catch.

[0009] Preferably, the trigger guard is provided with a groove that slides with the slider.

[0010] Preferably, the limiting rod is provided with a limiting protrusion that abuts against the limiting boss.

[0011] Preferably, each of the limiting protrusions is a round rod structure, and each of the limiting bosses is a rectangular structure.

[0012] Preferably, the elastic reset element is an elastic sheet, and the elastic sheet has an arc-shaped structure.

[0013] Preferably, the orthopedic saw body is composed of a main unit, a plug, and a handle connected together.

[0014] Preferably, the plug is located at the end of the main unit, and a oscillating saw is inserted into the plug.

[0015] Preferably, the handle has an overall elongated rectangular handle structure, and a bottom cover is provided on the handle.

[0016] In the above technical solution, the present invention provides a multifunctional orthopedic surgical saw with the following beneficial effects: This invention, by setting a mechanical anti-accidental contact limiting structure on the basis of the orthopedic saw body, consists of a trigger guard, a finger catch, a slider, a limiting rod, a limiting boss, and an elastic reset member. When not in operation, the elastic reset member at the bottom of the limiting rod is in an arc-shaped state, thereby applying a continuous downward pulling force to the limiting rod, keeping the limiting rod and the limiting boss on the trigger guard in contact and limiting, thus locking the inward movement of the finger catch. The system restricts trigger presses to prevent accidental activation during instrument transfer, surgical area adjustments, or hand slippage, thus improving surgical safety. During normal surgical activation, the operator inserts their finger into the trigger and abuts against the bottom of the limiting rod. The finger's insertion compresses the elastic reset element, causing deformation and pushing the limiting rod upwards. The limiting rod then disengages from the limiting boss, releasing the locking mechanism. The operator can then pull the trigger inwards, activating the system. The slider follows the trigger, sliding synchronously along the trigger guard. Figure 5 As shown in the diagram, the trigger guard is mounted in the trigger mounting area of ​​the orthopedic saw body, serving a basic function of preventing accidental triggering. After releasing the finger lever trigger, the elastic reset component deforms and automatically pulls down the limit rod, which then re-engages with the limit boss. The intersecting clamp-type adaptive trigger assembly, composed of the first and second clamps hinged together, adapts to different operating habits of left-handed and right-handed users through the first and second arc clamps located on the left and right sides of the finger lever inlet. Regardless of which side the finger enters from and presses against the corresponding arc clamp, the two clamps can be synchronously retracted through the cross-hinged linkage, symmetrically squeezing the plate body. The elastic reset component deforms under pressure, simultaneously pushing the limiting rod upward to complete the assisted unlocking. This structure expands the effective triggering area and improves the fault tolerance rate of unlocking triggering. It can avoid the critical dangerous state of incomplete unlocking when the finger is bloodied and slips during operation or when the operation is misaligned. At the same time, the lever effect reduces the resistance of finger pressing and reduces finger soreness and fatigue during long-term surgery. The symmetrical compression force form can also ensure that the elastic reset component deforms evenly and the limiting rod rises and falls smoothly, reducing the failure of uneven wear and jamming. Under normal conditions, the elastic reset component pushes against the two clamps in the opposite direction, which can keep the two arc clamps in a self-tensioned open state. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partially enlarged schematic diagram of the initial state of the finger buckle of the present invention; Figure 3 This is a partially magnified structural diagram of the finger buckle in its initial state from another perspective. Figure 4 This is a partially enlarged structural diagram of the limiting protrusion and the limiting boss of the present invention when they are about to separate; Figure 5 This is a partial enlarged structural diagram of the present invention after the finger buckle is activated; Figure 6 This is a partially enlarged schematic diagram of the exploded structure of the limiting rod and slider of the present invention; Figure 7 This is a schematic diagram of the intersecting clamp type adaptive triggering component structure of the present invention; Figure 8 This is a schematic diagram of the explosion of the first and second clamping plates of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Orthopedic saw body; 2. Trigger guard; 3. Limiting rod; 4. Slider; 5. First clamping plate; 6. Second clamping plate; 7. Side seat; 1.1. Plug part; 1.2. Oscillating saw; 1.3. Button; 1.4. Finger buckle; 1.5. Handle; 1.6. Bottom cover; 1.7. Trigger guide sleeve; 2.1. Slide groove; 2.2. Limiting boss; 2.3. Guide frame; 2.4. Guide channel; 3.1. Limiting protrusion; 3.2. Elastic reset component; 4.1. Guide groove; 5.1. Through groove; 5.2. First arc clamp; 6.1. Narrow plate part; 6.2. Second arc clamp; 7.1. Boss. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-8 This multi-functional orthopedic surgical saw addresses the problem of electric orthopedic saws having completely exposed triggers without a pre-positioned limiting or blocking structure or an independent pre-positioned mechanical anti-accidental activation mechanism. In situations such as instrument transfer, surgical area adjustment, instrument placement, and surgeon's hand slippage, the exposed trigger is easily impacted or squeezed by foreign objects or the surgeon's hand. The device can be directly activated without any pre-operation, lacking the necessary pre-activation unlocking conditions, resulting in a high risk of accidental activation and poor overall surgical safety.

[0022] As a further technical solution proposed in this invention, the orthopedic saw body 1 includes: a trigger guard 2, which is mounted on the trigger mounting area of ​​the orthopedic saw body 1; a finger catch 1.4, which is mounted on the trigger of the orthopedic saw body 1; a slider 4 is slidably disposed along the length of the trigger guard 2; a limiting rod 3, which is vertically slidably disposed through the finger catch 1.4, and the upper end of the limiting rod 3 is vertically slidably engaged with the slider 4; a limiting boss 2.2, which is disposed on the trigger guard 2, and the limiting boss 2.2 abuts against the limiting rod 3; and an elastic reset member 3.2, which is disposed on the limiting rod 3. The bottom end of the finger buckle 1.4 abuts against it; the intersecting clamp type adaptive triggering component is set on the finger buckle 1.4, and the intersecting clamp type adaptive triggering component includes a first clamping plate 5 and a second clamping plate 6 that are cross-hinged; the first clamping plate 5 and the second clamping plate 6 are respectively provided with a first arc clamp 5.2 and a second arc clamp 6.2 at the end facing the entrance of the finger buckle 1.4; the plate bodies of the first clamping plate 5 and the second clamping plate 6 abut against the elastic reset member 3.2; when it is fastened into the finger buckle 1.4, the two clamping plates cross-rotate around the hinge point, and the plate bodies synchronously squeeze the elastic reset member 3.2 to generate a shape. The change causes the limiting rod 3 to slide upwards. Specifically, a mechanical anti-accidental triggering limiting structure is set on the orthopedic saw body 1, consisting of a trigger guard 2, a finger catch 1.4, a slider 4, a limiting rod 3, a limiting boss 2.2, and an elastic reset member 3.2. In normal, non-operational state, the elastic reset member 3.2 at the bottom of the limiting rod 3 is in an arc shape, thus applying a continuous downward pulling force to the limiting rod 3. This keeps the limiting rod 3 in contact with the limiting boss 2.2 on the trigger guard 2, thereby locking the inward movement of the finger catch 1.4, limiting the finger catch 1.4 from pressing the trigger, and preventing accidental triggering. To prevent accidental activation of the equipment during procedures such as transfer of medical instruments, adjustment of the surgical area, and hand slippage, this system enhances surgical safety. During normal surgical activation, the operator inserts their finger into the finger catch 1.4, which abuts against the bottom of the limiting rod 3. As the finger enters the finger catch 1.4, it compresses the elastic reset element 3.2, causing deformation and pushing the limiting rod 3 upwards. The limiting rod 3 then disengages from the limiting boss 2.2, releasing the limiting lock. The operator can then smoothly pull the finger catch 1.4 inwards. The finger catch 1.4, in conjunction with the trigger 1.3, activates the equipment. The slider 4 slides synchronously along the trigger guard 2, following the finger catch 1.4. Figure 5As shown in the diagram, the trigger guard 2 is mounted on the trigger mounting area of ​​the orthopedic saw body 1, serving a basic function of preventing accidental triggering. After the trigger is released and the finger latch 1.4 is reset, the elastic reset component 3.2 deforms and resets, automatically pulling down the limit rod 3. The limit rod 3 and the limit boss 2.2 re-fit and lock together. The intersecting clamp-type adaptive trigger assembly, composed of the first clamp plate 5 and the second clamp plate 6, can adapt to different operating habits of left and right hands through the first arc clamp 5.2 and the second arc clamp 6.2 located on the left and right sides of the finger latch 1.4 entrance. This allows the two clamp plates to retract synchronously through the cross-hinged linkage, regardless of which side the finger is inserted from and presses against the corresponding arc clamp. The elastic reset component 3.2 is deformed by symmetrical compression of the plate body, and the limiting rod 3 is pushed upward simultaneously to complete the assisted unlocking. This structure expands the effective triggering area and improves the fault tolerance rate of unlocking triggering. It can avoid the critical dangerous state of incomplete unlocking when the finger is bloodied and slips during operation or when the operation is misaligned. At the same time, the lever effect reduces the resistance of finger pressing and reduces finger soreness and fatigue during long operation. The symmetrical compression force form can also ensure that the elastic reset component 3.2 deforms evenly and the limiting rod 3 rises and falls smoothly and evenly, reducing the failure of uneven wear and jamming. Under normal conditions, the elastic reset component 3.2 pushes against the two clamps in the opposite direction, which can keep the two arc clamps in a self-tensioned open state.

[0023] In this embodiment, the bending arc, pressing resistance, and rebound force of the elastic reset element 3.2 can be flexibly selected and adjusted by those skilled in the art according to different surgical conditions. In some embodiments, for long-term joint replacement surgery, an elastic sheet with low pressing resistance and a gentle arc can be used to reduce the soreness and fatigue of the fingers from prolonged pressing. In other embodiments, for emergency trauma surgery and scenarios with frequent instrument transfer, an elastic sheet with stronger rebound force and a larger arch arc can be used to enhance the downward pressing force on the limiting rod 3 under normal conditions, adapting to diverse clinical needs. The arc-shaped middle section of the elastic reset element 3.2 is fixedly connected to the bottom end of the limiting rod 3, and the left and right ends of the elastic sheet abut against the circular finger buckle 1.4 respectively. On the lower inner wall of the inner ring, a force-bearing structure with two-end support and a fixed middle section is formed. The arc-shaped middle section is fixedly connected to the bottom end of the limiting rod 3, which can evenly and centrally transmit the rebound tension of the entire elastic reset piece 3.2 to the limiting rod 3, without the problem of unilateral force deviation or tension imbalance. The downward pulling force is stable and continuous when normally locked. At the same time, the integrated fixing structure is firmly assembled, and the elastic reset piece 3.2 and the limiting rod 3 will not loosen or separate after multiple compression deformations. In actual clinical operation, the internal diameter of the finger buckle 1.4 needs to reserve sufficient movement margin. Therefore, the internal space of the finger buckle 1.4 is larger than the thickness of the doctor's finger. If the intersecting clamp type adaptive trigger component is not set, the finger When inserting the finger into the finger clip 1.4, there will be a gap in movement. The operator needs to actively adjust the finger position and consciously align and press the elastic reset element 3.2 to complete the unlocking. When the doctor's gloves are stained with blood, the field of vision is limited, or there are individual differences in finger size, the finger can easily shift inside the finger clip 1.4, resulting in a situation where the finger is inserted but cannot effectively press the elastic reset element 3.2. This requires repeated adjustments to the finger posture, increasing the workload during the operation. However, through the intersecting clamp-type adaptive trigger component, the first arc clamp 5.2 and the second arc clamp 6.2, which open outward, form a flared guide inlet. During the process of inserting the finger into the finger clip 1.4, regardless of whether the finger size is larger or smaller, the finger can easily shift. With the little finger positioned anywhere within the inner cavity of the finger clip 1.4—left, right, or center—it can contact either the first arc clamp 5.2 or the second arc clamp 6.2. Through the cross-hinged transmission of the clamps, the force of the inserted finger is transmitted to the elastic reset element 3.2 to complete the unlocking process. The operator does not need to manually adjust the finger position to align with the elastic reset element 3.2. This structure can accommodate doctors' fingers of different thicknesses, eliminating the alignment difficulties caused by the internal gaps of the finger clip 1.4. The finger insertion action and the unlocking trigger action are continuous and synchronous, lowering the manual operation threshold for unlocking. Even under conditions of surgical tension, glove slippage, or obstructed vision by the surgical area, unlocking can still be achieved stably and quickly.

[0024] In another embodiment of the present invention, the trigger is a button 1.3, and the finger clip 1.4 is specifically a circular ring structure, which is connected to the button 1.3. Furthermore, the circular ring structure of the finger clip 1.4 allows the doctor's fingers to be fully inserted and gripped, the fingers are evenly stressed, and the gripping process is stable. The ring is integrally connected to the button 1.3, the transmission path is short, the finger movements can be directly transmitted to the button 1.3, the transmission is lag-free, the start and stop response is sensitive, the ring outline is regular, there are no sharp edges, and it will not scratch the hands of medical staff during the operation.

[0025] In another embodiment of the present invention, the trigger guard 2 is generally concave in shape, and the width of the trigger guard 2 is greater than the width of the finger catch 1.4. The trigger guard 2 is provided with a groove 2.1 that slides with the slider 4. Further, as... Figure 6 As shown in the diagram, the slider 4 has a guide groove 4.1 that slides with the limiting rod 3. The trigger guard 2 has a concave structure and its width is greater than that of the finger buckle 1.4. The concave cavity can accommodate the finger buckle 1.4, slider 4, and limiting rod 3 as a whole, forming an external physical shield. On the one hand, it can prevent foreign objects from directly hitting the finger buckle 1.4, achieving a basic anti-accidental touch effect. The concave wrap-around structure provides comprehensive protection, and the guard's width, which is greater than that of the finger buckle 1.4, allows for sufficient space for movement and prevents the finger buckle 1.4 from sliding left or right. Interference occurs, and the slide groove 2.1 can limit the sliding trajectory of the slider 4, so that the slider 4 can only move smoothly along the length of the guard frame, preventing the slider 4 from deviating. The slider 4 is provided with a guide groove 4.1 that slides vertically with the limiting rod 3. The guide groove 4.1 forms a vertical guiding constraint on the limiting rod 3, and the limiting rod 3 can only slide vertically up and down along the guide groove 4.1. The slide groove 2.1 and the guide groove 4.1 form a two-way guiding structure, which constrains the movement trajectory in the horizontal and vertical directions respectively. The entire sliding fit structure has high motion accuracy and stable operation.

[0026] In another embodiment of the present invention, the limiting rod 3 is provided with a limiting protrusion 3.1 that abuts against the limiting protrusion 2.2. Each limiting protrusion 3.1 is specifically a round rod structure, and each limiting protrusion 2.2 is specifically a rectangular structure. Further, the limiting rod 3 is configured such that the limiting protrusion 3.1 and the limiting protrusion 2.2 abut against each other to achieve locking and positioning, as shown below. Figure 2 and Figure 3 As shown in the diagram, when the elastic reset component 3.2 is in its initial state, the limiting rod 3 abuts against the limiting boss 2.2 via the limiting protrusion 3.1. Under the abutting engagement, the locking finger latch 1.4 is locked, preventing the trigger from being pressed. The rectangular limiting boss 2.2 has a flat contact surface, which can form a stable contact with the limiting protrusion 3.1. The combination of the round rod and the rectangular plane has high alignment tolerance, and does not require extremely high alignment accuracy during assembly, reducing the difficulty of component processing and assembly. The abutting and separating process is smooth, and the lifting and sliding will not jam. The unlocking and automatic reset actions are smooth and stable.

[0027] In another embodiment of the present invention, the elastic reset element 3.2 is specifically an elastic sheet with an arc-shaped structure. Further, in the initial stage when the device is normally idle and not in operation, the arc-shaped elastic sheet maintains its natural curved shape, with both ends abutting against the inner wall of the finger buckle 1.4. Relying on its own arc-shaped rebound tension, it continuously applies downward pulling force to the limiting rod 3, causing the limiting protrusion 3.1 on the limiting rod 3 to stably conform to the limiting boss 2.2, firmly locking the upward space of the limiting rod 3, restricting the inward movement of the finger buckle 1.4, and stably maintaining the anti-accidental touch locking state of the entire machine. When the doctor's finger is inserted into the finger buckle 1.4, it directly abuts against the elastic reset element 3.2. The finger continuously exerts inward force to squeeze the arc-shaped elastic sheet, causing it to deform under pressure. During the deformation of the elastic sheet, the limiting rod 3 simultaneously slides upward until the limiting protrusion 3.1 disengages from the limiting boss 2.2, completing the limiting unlocking. Figure 4 As shown in the status indicator, you can then press the latch 1.4 inwards to activate the device via button 1.3. Figure 5 As shown in the diagram, the arc-shaped elastic sheet experiences uniform force during deformation, with a smooth bending transition and gentle, non-jamming operating resistance, improving the surgical feel. When the surgeon releases the trigger, button 1.3 returns to its original position under the internal spring, and the limiting protrusion 3.1 slides back to its original position on the limiting protrusion 2.2. Figure 4 As shown in the diagram, the doctor's finger then stops pressing the elastic reset piece 3.2. The arc-shaped elastic sheet, which has accumulated potential energy, quickly rebounds and returns to its initial arc shape. The limiting rod 3 is pulled downwards again, and the limiting protrusion 3.1 re-engages with the limiting protrusion 2.2. Figure 2 As indicated, the lockout protection has been restored.

[0028] In this embodiment, the elastic reset element 3.2 is an arc-shaped elastic sheet. The bending direction of the arc is consistent with the direction of the finger's movement when it enters the finger clip 1.4. The arc-shaped elastic sheet is bent and shaped to fit the trajectory of the finger's insertion. The outer surface of the arc is smooth and without sharp edges. After the doctor's finger is inserted into the finger clip 1.4, it can completely fit the curved surface of the arc-shaped elastic sheet, resulting in a larger contact area and preventing single-point pressure. During long-term surgical operations, it can reduce local pressure and soreness of the finger, improve contact comfort, and the arc-shaped structure set along the direction of finger insertion has uniform force transmission, smooth transition of compression deformation, and gentle operation resistance without jamming, further optimizing the surgical operation feel.

[0029] In another embodiment of the present invention, the orthopedic saw body 1 is composed of a main unit, a plug part 1.1, and a handle 1.5 connected together. Furthermore, the main unit, plug part 1.1, and handle 1.5 are connected together. This structure belongs to the general basic configuration of existing handheld electric orthopedic oscillating saws. The main unit provides cutting power to realize the basic cutting function of orthopedic osteotomy and shaping. The plug part 1.1 can quickly replace saw blades of different specifications to adapt to various surgeries. The handle 1.5 provides stable grip support. The three constitute the basic cutting operation carrier of the equipment. The present invention adds an integrated structure composed of a trigger guard 2, a finger buckle 1.4, a slider 4, a limiting rod 3, a limiting protrusion 3.1, a limiting boss 2.2, and an arc-shaped elastic reset component 3.2 on the existing basis, so that the equipment has three independent functions at the same time and realizes the multi-functionality of the equipment.

[0030] The first layer is the basic surgical cutting function, which relies on the main unit, plug 1.1, button 1.3 and circular finger buckle 1.4 to complete routine osteotomy and bone trimming operations. The circular finger buckle 1.4 improves the grip comfort and operation response sensitivity, making it suitable for long-term surgical operations.

[0031] The second layer is a mechanical anti-accidental activation safety protection function. In the normal state where the trigger is not pulled, the arc-shaped elastic reset component 3.2 pulls the limit rod 3 downwards, and the limit protrusion 3.1 and the limit protrusion 2.2 abut against and lock the finger buckle 1.4, eliminating the risk of accidental saw blade activation due to instrument transfer or hand slippage. The bending direction of the arc-shaped elastic reset component 3.2 matches the direction of finger movement when inserted into the finger buckle 1.4, and the curved surface fits the finger, taking into account the feel of unlocking operation. After the doctor inserts his finger into the finger buckle 1.4 and squeezes the elastic reset component 3.2, the limit rod 3 moves upward to unlock, and then the finger buckle 1.4 can be pulled to start the equipment. The mechanical locking structure has stable locking performance.

[0032] The third function is motion guidance. The width of the concave trigger guard 2 is greater than that of the finger buckle 1.4. Together with the slide groove 2.1 and the guide groove 4.1 of the slider 4, a two-way guiding structure is formed, which precisely constrains the movement trajectory of the slider 4 and the limit rod 3, ensuring that the unlocking and pulling operations are smooth and without deviation or jamming interference throughout the entire process.

[0033] In another embodiment of the present invention, the plug portion 1.1 is located at the end of the main unit, and the oscillating saw 1.2 is plugged into the plug portion 1.1. The handle 1.5 is generally a long rectangular handle structure, and a bottom cover 1.6 is provided on the handle 1.5. Furthermore, the plug portion 1.1 is arranged at the end of the main unit, and the oscillating saw 1.2 is assembled to the plug portion 1.1 by a plug-in method. The plug portion 1.1 and the plug-in mating structure between the plug portion 1.1 and the oscillating saw 1.2 are all prior art. The plug-in connection is simple to assemble and disassemble, and different specifications of the oscillating saw 1.2 can be quickly replaced according to different orthopedic surgical osteotomy and grinding needs. Adaptable to various surgical conditions, the disassembly and assembly process requires no additional tools, saving time when changing the saw blade during surgery. The 1.5 handle adopts a long rectangular handle structure, with a flat and regular grip surface and even force distribution, so medical staff are less likely to experience local pressure soreness during long-term operation. The rectangular shape facilitates stable gripping and prevents slippage during operation, improving the stability of surgical operations. The 1.5 handle is equipped with a bottom cover, which forms a closed enclosure of the internal installation space of the 1.5 handle. At the same time, opening the bottom cover allows direct access to the battery inside the 1.5 handle for maintenance and assembly. The 1.5 handle and bottom cover are also based on the mature existing basic structure of orthopedic oscillating saws.

[0034] In another embodiment of the present invention, the orthopedic saw body 1 is provided with a trigger guide sleeve 1.7 connected to the button 1.3. The trigger guide sleeve 1.7 is fitted on the outside of the button 1.3 and the two slide together coaxially. The trigger guide sleeve 1.7 and the sliding assembly structure between the trigger guide sleeve 1.7 and the button 1.3 are all mature existing technologies. The trigger guide sleeve 1.7 is fixed on the handle 1.5 and can form a radial limiting constraint on the button 1.3, allowing the button 1.3 to slide smoothly back and forth along its own axis, preventing the button 1.3 from deviating or tilting during pressing and rebounding, and avoiding uneven wear and jamming problems caused by long-term repetitive use. At the same time, the trigger guide sleeve 1.7 can form a simple shield for the tail of the button 1.3, reducing the intrusion of bone fragments and blood into the fitting gap. The preoperative operation procedure of the orthopedic saw is for medical staff to disassemble the unused parts. For sterile packaging, insert and fix the compatible swing saw 1.2 to the front plug 1.1 of the main unit. Hold the instrument away from the body and gently pull the trigger to test the reciprocating swing function. After confirming that the saw blade is not loose and the trigger rebounds smoothly, place it in the sterile instrument tray for later use. During the operation, the doctor holds the long rectangular handle 1.5 with one hand. When it is necessary to start cutting, the doctor must first insert a finger into the circular finger buckle 1.4 to squeeze the arc-shaped elastic reset piece 3.2. The elastic piece deforms under pressure, causing the limiting rod 3 to move upward. The limiting protrusion 3.1 disengages from the limiting protrusion 2.2 to complete the pre-unlocking. After unlocking, the doctor can then pull the linkage button 1.3 of the finger buckle 1.4 to drive the swing saw 1.2 to reciprocate and cut. Only when the doctor actively inserts a finger to squeeze the elastic piece can the limiting be released. During the operation, instrument scraping or trigger squeezing will not trigger the device to start, improving the safety factor of the operation.

[0035] In another embodiment of the present invention, a through groove 5.1 is provided in the middle of the first clamping plate 5. The through groove 5.1 extends along the length direction of the first clamping plate 5. The width of the through groove is adapted to the thickness of the narrow plate portion 6.1 of the second clamping plate 6. The middle of the second clamping plate 6 narrows inward to form the narrow plate portion 6.1. The thickness of the narrow plate portion 6.1 is less than the thickness of the main body of the second clamping plate 6. The narrow plate portion 6.1 passes through the through groove 5.1. Figure 7 As shown in the diagram, the first clamping plate 5 and the second clamping plate 6 form a cross-hinged structure with a centrally interlocking arrangement. The hinge centers at their intersections remain coaxial. The effective length of the through slot 5.1 is greater than the corresponding length of the narrow plate portion 6.1. This design allows for sufficient movement of the two clamping plates relative to each other, enabling them to smoothly rotate open and close around the hinge rod. Simultaneously, the inner wall of the through slot 5.1 limits the rotational travel of the narrow plate portion 6.1. When the clamping plates open to the preset maximum angle, the side end face of the narrow plate portion 6.1 abuts against the through slot 5.1. On the corresponding inner wall, the physical blocking clamp continues to deflect outward, and the opening angle limit can be achieved without the need for additional independent limiting parts, resulting in higher structural integration. The nested and intersecting fit of the through groove and the narrow plate reduces the overall thickness at the hinge, making the entire intersecting clamp type adaptive trigger component structure more compact. It is suitable for the limited inner cavity installation space of the circular ring finger buckle 1.4. At the same time, the nested fit can form auxiliary constraints on the two clamps in multiple directions, such as up and down and left and right, to avoid radial wobble during the rotation of the clamps and improve the coaxiality and stability of the cross rotation.

[0036] In another embodiment of the present invention, side seats 7 are symmetrically arranged on the left and right outer walls of the finger buckle 1.4. The side seats 7 are integrally formed with the finger buckle 1.4 and extend outward along the finger buckle axis. Each side seat 7 has a protrusion 7.1 integrally protruding on the end face facing the finger buckle inlet. The protrusion 7.1 extends radially downward along the finger buckle into the finger buckle inlet. Coaxial hinge holes are opened at corresponding positions of the two protrusions 7.1. A hinge rod passes through the hinge hole. The cross hinge parts of the first clamping plate 5 and the second clamping plate 6 are rotatably fitted on the hinge rod to realize the stable hinged assembly of the two clamping plates at the finger buckle inlet. The downwardly extending structure of the protrusion 7.1 holds the first clamping plate 5 and the second clamping plate 6 together. The hinge point between plate 5 and the second clamping plate 6 is offset outward and downward from the end face of the finger buckle 1.4, effectively expanding the space for the two clamping plates to rotate crosswise. On the one hand, this avoids the clamping plates from scraping and interfering with the inner ring edge of the finger buckle 1.4 during the reciprocating rotation of opening and closing, ensuring smooth and unobstructed rotation of the clamping plates. On the other hand, it provides sufficient space for the elastic reset member 3.2 to deform inward under the pressure of the clamping plate body, ensuring that even when the elastic reset member 3.2 is compressed to its maximum deformation, it will not collide hard with the hinged rod, thus ensuring the complete deformation stroke of the elastic member and guaranteeing sufficient upward unlocking and lifting displacement of the limit rod 3. Figure 3Under the initial normal state shown, the first clamping plate 5 and the second clamping plate 6 maintain an outwardly open posture under the reverse support of the elastic reset member 3.2. The maximum opening angle of the two clamping plates is limited by the mutual abutment of the inner side wall of the through groove 5.1 and the side end face of the narrow plate 6.1. When the clamping plates open to the limit angle, the side wall of the narrow plate 6.1 fits against the corresponding inner wall of the through groove 5.1, physically preventing the clamping plates from continuing to rotate outward, avoiding excessive outward opening of the clamping plates, which could cause the elastic reset member 3.2 to loosen or the hinge position to misalign. During the unlocking operation, the finger presses against the arc clamp on the corresponding side, causing the clamping plates to retract inward around the hinge rod. The low-position hinge fulcrum extending from the boss 7.1 gives the clamping plates a longer effective rotational power arm, and the transmission efficiency of the clamping plate body pressing the elastic reset member 3.2 is higher, making the unlocking operation easier.

[0037] In this embodiment, the first arc clip 5.2 and the second arc clip 6.2 are independent integral rubber components. The bodies of the first clamping plate 5 and the second clamping plate 6 are made of rigid medical plastic substrate. The first arc clip 5.2 is fixedly installed at the end of the first clamping plate 5, and the second arc clip 6.2 is fixedly installed at the end of the second clamping plate 6. The intersection of the clamping plates 5 and 6, the through groove 5.1, the narrow plate portion 6.1, and the hinge assembly portion all maintain a rigid substrate structure. This structural arrangement limits the deformation area to the first arc clip 5.2 and the second arc clip 6.2 at the ends. The elasticity of the rubber component itself achieves contact buffering, avoiding the pain and pressure caused by the rigid structure when the finger is inserted into the finger clip 1.4. The intersecting rotation area of ​​the clamping plates always maintains a rigid state and will not be twisted due to rubber deformation. This ensures the cross rotation accuracy between the through groove 5.1 and the narrow plate portion 6.1, eliminates torque attenuation during rotation, and ensures that the pressing pressure applied by the finger can be completely transmitted to the clamping plate body, thereby squeezing the elastic reset member 3.2. Upon completion of the unlocking action, the first arc clip 5.2 and the second arc clip 6.2 are arranged at an outward tilting angle relative to the entrance of the finger buckle 1.4. The junctions of the first arc clip 5.2 with the first clamp 5 and the second arc clip 6.2 with the second clamp 6 feature gentle bends. The two arc clips form a guide slope on the side facing the entrance of the finger buckle 1.4. During the insertion of the finger into the finger buckle 1.4, there is no need to deliberately align the component; the finger can directly press against the first arc clip 5.2 or the second arc clip 6.2 along the guide slope of the arc clip as it is inserted. The finger insertion action and the clamp triggering action are smooth and synchronized, preventing the finger from slipping across the arc clip surface and failing to trigger the unlocking. The first arc clip 5.2 is made entirely of rubber. 2. The second arc clip 6.2 can adaptively deform when pressed by a finger, conforming to the outer contour of the finger and further accommodating positional deviations when the finger is inserted. The outward tilting angle makes the first arc clip 5.2 and the second arc clip 6.2 form a trumpet-shaped inlet guide structure. No matter whether the finger is inserted from the left, middle or right side of the finger buckle 1.4 inlet, it can press against the corresponding arc clip, converting the axial feeding force of the inserted finger into the torque that drives the first clip 5 and the second clip 6 to rotate around the hinge rod. This improves the triggering fault tolerance of the intersecting clip type adaptive trigger component, reduces the operation alignment accuracy requirements, and allows the unlocking operation to be completed smoothly even if the surgeon wears thick sterile gloves and the surgical area obscures the view.

[0038] In another embodiment of the present invention, a limiting guide frame 2.3 is fixedly connected to each limiting boss 2.2. The limiting guide frame 2.3 is arched and erected above the limiting boss 2.2. The lower ends of both sides of the limiting guide frame 2.3 are connected to the body of the limiting boss 2.2. The inner sidewall of the limiting guide frame 2.3 and the top surface of the limiting boss 2.2 enclose each other to form a guide channel 2.4. The guide channel 2.4 extends along the length of the trigger guard 2. The extension direction of the guide channel 2.4 is parallel to the direction of the slide groove 2.1 on the trigger guard 2. The limiting protrusion 3.1 provided on the upper part of the limiting rod 3 passes through the guide channel 2.4. The limiting protrusion 3.1 can follow the movement of the limiting rod 3 and slide horizontally synchronously along the guide channel 2.4. The channel height of the guide channel 2.4 is the same as that of the limiting protrusion. The diameters of the rods 3.1 are precisely matched, allowing the limiting protrusion 3.1 to slide freely and smoothly inside the channel while forming a circumferential constraint on the limiting protrusion 3.1, suppressing the deflection and wobbling of the limiting protrusion 3.1. The upper guide channel 2.4 cooperates with the guide groove 4.1 inside the slider 4 to construct two independent guide constraint structures at the upper and middle positions of the limiting rod 3. The two guide structures work together to ensure that the limiting rod 3 maintains a vertical posture throughout the entire process of following the finger buckle 1.4 to complete the horizontal buckling displacement, avoiding phenomena such as circumferential rotation and radial offset of the limiting rod 3. This ensures that the assembly position between the bottom end of the limiting rod 3 and the elastic reset part 3.2 and the intersecting clamp-type adaptive trigger component is continuously and accurately aligned, avoiding misalignment and movement jamming caused by component misalignment.

[0039] In this embodiment, the inner space of the limiting guide frame 2.3 and the upper surface of the limiting boss 2.2 enclose each other to form a guide channel 2.4. The guide channel 2.4 is divided into a vertical guide section and a horizontal guide section connected end to end. The vertical guide section is arranged vertically and is used for the vertical lifting and lowering movement of the limiting boss 3.1 when unlocking. The horizontal guide section is arranged along the length of the trigger guard 2 and is used for the horizontal sliding movement of the limiting boss 3.1 during trigger pulling. The limiting boss 3.1 is slidably assembled inside the guide channel 2.4. During the unlocking stage, the limiting boss 3.1 moves along the vertical guide section towards... The device moves upward, disengaging from the locking engagement with the limiting boss 2.2. After unlocking, the finger buckle 1.4 is engaged, and the limiting boss 3.1 enters the horizontal guide section and slides horizontally synchronously with the limiting rod 3. The dimensions of both sections of the guide channel 2.4 are precisely matched with the diameter of the limiting boss 3.1, which can form a circumferential constraint on the limiting boss 3.1, suppressing deflection and swaying. The matching device first unlocks vertically and then engages horizontally in a step-by-step action logic. The arched limiting guide frame 2.3 covers both the vertical and horizontal guide sections. At the same time, the guide channel 2.4 and the guide groove 4.1 of the slider 4 form a double upper and lower guide.

[0040] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multifunctional orthopedic surgical saw, comprising an orthopedic saw body (1), characterized in that, Also includes: Trigger guard (2), which is fitted in the trigger mounting area of ​​the orthopedic saw body (1); Finger clip (1.4), which is mounted on the trigger of the orthopedic saw body (1); The trigger guard (2) is slidably provided with a slider (4) along its length direction. The limiting rod (3) slides vertically through the finger buckle (1.4), and the upper end of the limiting rod (3) slides vertically with the slider (4); A limiting boss (2.2) is provided on the trigger guard (2), and the limiting boss (2.2) abuts against the limiting rod (3); An elastic reset member (3.2) is disposed at the bottom end of the limiting rod (3) and abuts against the finger buckle (1.4); An intersecting clamp type adaptive triggering component is disposed on the finger buckle (1.4). The intersecting clamp type adaptive triggering component includes a first clamp (5) and a second clamp (6) that are cross-hinged. The first clamp (5) and the second clamp (6) are respectively provided with a first arc clamp (5.2) and a second arc clamp (6.2) at the end facing the finger buckle (1.4) entrance; The bodies of the first clamping plate (5) and the second clamping plate (6) are both in contact with the elastic reset member (3.2); When the finger buckle (1.4) is fastened, the two clamps rotate around the hinge point, and the elastic reset piece (3.2) is deformed by the synchronous pressure of the plate body, which drives the limit rod (3) to slide upward.

2. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The trigger is a button (1.3), and the finger clip (1.4) is specifically a circular structure, which is connected to the button (1.3).

3. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The trigger guard (2) has a concave structure, and the width of the trigger guard (2) is greater than the width of the finger buckle (1.4).

4. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The trigger guard (2) is provided with a groove (2.1) that slides with the slider (4).

5. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The limiting rod (3) is provided with a limiting protrusion (3.1) that abuts against the limiting protrusion (2.2).

6. The multifunctional orthopedic surgical saw according to claim 5, characterized in that, Each of the aforementioned limiting protrusions (3.1) is specifically a round rod structure, and each of the aforementioned limiting protrusions (2.2) is specifically a rectangular structure.

7. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The elastic reset element (3.2) is specifically an elastic sheet, which has an arc-shaped structure.

8. The multifunctional orthopedic surgical saw according to claim 1, characterized in that, The orthopedic saw body (1) is composed of a main unit, a plug (1.1) and a handle (1.5) connected together.

9. The multifunctional orthopedic surgical saw according to claim 8, characterized in that, The plug (1.1) is located on the end of the main unit, and a oscillating saw (1.2) is inserted into the plug (1.1).

10. The multifunctional orthopedic surgical saw according to claim 9, characterized in that, The handle (1.5) has an overall elongated rectangular handle structure, and a bottom cover (1.6) is provided on the handle (1.5).

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