A double shoulder bone knife capable of realizing accurate positioning and controllable direction in operation

Abstract

The application provides a double-shoulder bone knife capable of realizing accurate positioning and direction control in operation, which comprises a bone knife body, a cutting edge for cutting solid tissue, a positioning support connected with the bone knife body for indicating the position and posture of the double-shoulder bone knife, and a cutting edge positioning module designed separately from the double-shoulder bone knife for calibrating the cutting edge. In the connection between the positioning support and the bone knife body, there are an active state in which the positioning support rotates along the bone knife body and a locked state in which the positioning support is locked at a certain rotation angle. In the application, the accurate mechanical structure and auxiliary system realize accurate control of the position and direction of the bone knife in the operation process, and improve the accuracy and safety of the operation.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a double shoulder bone scalpel that enables precise intraoperative positioning and directional control. Background Technology

[0002] In traditional periacetabular osteotomy, the positioning and directional control of the bilateral shoulder osteotomy blades mainly rely on the surgeon's experience and feel, which greatly limits the accuracy and repeatability of the surgery. Precise positioning and directional control are key factors in improving the success rate of the surgery and the patient's recovery.

[0003] Therefore, there is an urgent need to develop a double-shoulder bone cutter that can achieve precise intraoperative positioning and directional control. Summary of the Invention

[0004] The problem addressed in this application is the urgent need to develop a dual-shoulder bone cutter that enables precise intraoperative positioning and directional control.

[0005] To address the aforementioned problems, this application provides a dual-shoulder osteotome capable of precise intraoperative positioning and directional control, comprising:

[0006] The bone scalpel body has a blade for cutting solid tissue;

[0007] A positioning bracket, connected to the bone blade body, is used to indicate the position and orientation of the shoulder bone blades;

[0008] The blade positioning module, designed separately from the double shoulder bone knife, is used to calibrate the blade.

[0009] The connection between the positioning bracket and the bone knife body includes an active state in which the positioning bracket rotates along the bone knife body, and a locked state in which the positioning bracket is locked at a certain rotation angle.

[0010] Furthermore, the blade positioning module includes a display frame and a blade groove. The shape of the blade groove is adapted to the blade. The display frame is used to indicate the position and orientation of the blade positioning module when the blade is inserted into the blade groove.

[0011] Furthermore, the bone knife body includes a gripping part and a cutting part, the gripping part is rotatably connected to the positioning bracket, and the cutting part is provided with the blade; the gripping part and the cutting part are detachably connected.

[0012] Furthermore, the cutting part is long and rod-shaped, with an annular groove and a quick-connect groove arranged sequentially in the forward direction at the rear end; the front end of the gripping part is provided with a quick-connect component and a buffer component arranged sequentially in the rearward direction; the quick-connect component and the quick-connect groove are adapted to perform quick connection; the buffer component and the annular groove are adapted to perform buffering.

[0013] Furthermore, the annular groove is provided at the tail end of the cutting part, and is an annular groove formed by indentation along the outer side of the cutting part, and the longitudinal section of the annular groove is triangular; the buffer is an annular buckle with a corresponding shape, and the buffer is independently provided with respect to the gripping part.

[0014] Furthermore, the front end of the gripping part is provided with a columnar opening, and the buffer is disposed in the cylindrical space at the bottom of the columnar opening; the buffer is connected to the cylindrical space by a first spring and a second spring.

[0015] Furthermore, the first spring and the second spring abut against the front end face and the rear end face of the buffer member, respectively, to restrict the buffer member; the other ends of the first spring and the second spring are fixed in the cylindrical space.

[0016] Furthermore, the spring constant of the second spring is greater than that of the first spring.

[0017] Furthermore, a rotatable component is nested on the outer side of the gripping part, and the rotatable component is fixedly connected to the positioning bracket.

[0018] Furthermore, the outer side of the gripping part is recessed inward to form a thin shaft; a roller is provided on the thin shaft, and the rotatable part has a cylindrical through hole, which is sleeved on the roller so that the rotatable part can rotate around the thin shaft.

[0019] Furthermore, a pressing member is provided near the thin shaft portion of the gripping part. The pressing member has an inverted U-shaped structure, with one end extending out of the gripping part for pressing; the other end extends from one side of the thin shaft to abut against the cylindrical through hole.

[0020] Furthermore, the inner wall of the cylindrical through hole is provided with a plurality of slots near one end of the pressing member. The slots are adapted to the shape of one end of the pressing member to lock the rotatable member in place.

[0021] Furthermore, the blade is crescent-shaped, high on both sides and low in the middle, and the heat treatment hardness of the blade is 52-56 HRC.

[0022] Furthermore, the width of the blade ranges from 1.5cm to 3cm.

[0023] Furthermore, the blade and the tail end axis of the cutting part form an inward arc transition angle of 30 degrees.

[0024] In this application, through a precise mechanical structure and auxiliary system, the position and direction of the bone scalpel during the operation are precisely controlled, thereby improving the accuracy and safety of the operation. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of the double shoulder bone scalpel of this application;

[0026] Figure 2 This is a cross-sectional schematic diagram of the double shoulder bone scalpel of this application;

[0027] Figure 3 This is a cross-sectional schematic diagram of the grip portion of the double-shoulder bone scalpel in this application;

[0028] Figure 4 This is a schematic diagram illustrating the detachable connection of the double shoulder bone scalpels in this application;

[0029] Figure 5 This is a diagram showing the internal structure of the rotatable double-shoulder bone scalpel component of this application;

[0030] Figure 6 This is a structural diagram of the rotatable double-shoulder bone scalpel component of this application.

[0031] Explanation of reference numerals in the attached drawings: 1-Bone blade body; 10-Holding part; 11-Rotating part; 12-Thin shaft; 13-Roller; 14-Pressing part; 15-Cylindrical through hole; 16-Slot; 17-Quick connector; 18-Buffer part; 20-Cutting part; 21-Annular groove; 22-Quick connector groove; 23-First spring; 24-Second spring; 25-Third spring; 3-Positioning bracket. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings. Although exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0033] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0034] In traditional periacetabular osteotomy, the positioning and directional control of the bilateral shoulder osteotomy blades mainly rely on the surgeon's experience and feel, which greatly limits the accuracy and repeatability of the surgery. Precise positioning and directional control are key factors in improving the success rate of the surgery and the patient's recovery.

[0035] Conventional double shoulder scalpels typically achieve precise positioning by using a fixed positioning frame (an external positioning device can determine the exact position of the double shoulder scalpels through the positioning frame). However, the positioning range of this fixed positioning frame is limited. If the external positioning device is within this range, positioning can be achieved; otherwise, positioning cannot be achieved.

[0036] Furthermore, the use of dual-shoulder osteotome requires adaptation to different directions depending on the left and right sides of the acetabulum. For example, when performing osteotomy on the left acetabulum, the fixed positioning frame may face to the right, and vice versa. However, for external positioning devices, due to surgical needs, they may be set on a fixed side (such as the left or right side). This can lead to situations where the dual-shoulder osteotome cannot be positioned during surgery, or the direction of the dual-shoulder osteotome is restricted (in order to be positioned, the positioning frame of the dual-shoulder osteotome must face a specific position, which restricts the direction of the osteotome).

[0037] During the operation, if there is a lack of precise control over the bone scalpel, even minor errors in the surgical process may lead to unsatisfactory surgical results or even complications such as ischial fractures or posterior column fractures, causing great pain to the patient.

[0038] Therefore, developing a dual-shoulder bone scalpel that can achieve precise intraoperative positioning and directional control not only meets clinical needs but also conforms to the current trend of medical technology development, and has significant growth potential and application value.

[0039] To address the aforementioned issues, this application provides a novel double-shoulder bone scalpel capable of rotating the positioning frame to achieve precise and controllable positioning direction, thereby avoiding any impact on positioning accuracy.

[0040] In this application, the direction perpendicular to the axis and pointing towards the axis is "inside", and the direction perpendicular to the axis and away from the axis is "outside"; the direction along the axis and pointing towards the blade on the probe is "front", and the direction along the axis and away from the blade is "back".

[0041] This application provides a dual-shoulder bone scalpel that enables precise intraoperative positioning and directional control. The structure of the dual-shoulder bone scalpel is as follows: Figures 1-5 As shown, the dual-shoulder bone scalpel, which enables precise intraoperative positioning and directional control, comprises:

[0042] The bone scalpel body 1 has a blade for cutting solid tissue;

[0043] The positioning bracket 3 is connected to the bone knife body 1 and is used to indicate the position and posture of the shoulder bone knives;

[0044] The blade positioning module (not shown in the figure) is a separate design from the double shoulder bone knife and is used to calibrate the blade.

[0045] In the connection between the positioning bracket 3 and the bone knife body 1, the positioning bracket 3 has an active state of rotating along the bone knife body 1, and the positioning bracket 3 is locked in a locked state at a certain rotation angle.

[0046] In this application, by setting the positioning frame to be rotatable, the orientation of the positioning frame can be adjusted as needed in actual use, so as to achieve precise positioning and directional control during the operation.

[0047] In this application, through a precise mechanical structure and auxiliary system, the position and direction of the bone scalpel during the operation are precisely controlled, thereby improving the accuracy and safety of the operation.

[0048] Furthermore, the blade positioning module includes a display frame and a blade groove. The shape of the blade groove is adapted to the blade. The display frame is used to indicate the position and orientation of the blade positioning module when the blade is inserted into the blade groove.

[0049] In this application, the blade groove is a slot that uniquely matches the blade's orientation, ensuring that the blade can only be inserted into the groove in one specific orientation. The blade groove and the display holder have a fixed relative position. When the blade is inserted into the groove, the corresponding coordinates of the groove can be determined via the display holder, thus determining the blade's orientation and coordinates. At this time, the positioning bracket on the bone knife body is also simultaneously identified, thereby determining the relative position of the positioning bracket and the blade's orientation. This relative position allows for real-time determination of the blade's orientation during subsequent use of the bone knife.

[0050] In this application, the blade positioning module is used to position and correct the position and orientation of the bone knife blade.

[0051] Furthermore, the bone knife body 1 includes a gripping part 10 and a cutting part 20. The gripping part 10 is rotatably connected to the positioning bracket 3, and the cutting part 20 is provided with the blade. The gripping part 10 and the cutting part 20 are detachably connected.

[0052] In this application, the gripping part is used for handheld operation, and the cutting part is used for cutting bone tissue. The gripping part 10 and the cutting part 20 are detachably connected, allowing the gripping part and the cutting part to be separated, thereby enabling the replacement of different cutting parts.

[0053] In this application, the connection between the gripping part and the cutting part is a unique orientation connection, meaning that the cutting part can only be connected to the gripping part in a preset orientation. In this way, the orientation of the gripping part and the cutting part is uniquely determined after connection (if it is not uniquely determined, it means that the relative angle between the cutting part and the gripping part cannot be determined, and accurate measurement during surgery cannot be performed), avoiding the situation where the cutting part is rotated before reconnection.

[0054] Furthermore, the cutting part 20 is in the shape of a long rod, with an annular groove 21 and a quick-connect groove 22 arranged sequentially in the forward direction at the rear end; the front end of the gripping part 10 is provided with a quick-connect member 17 and a buffer member 18 arranged sequentially in the rearward direction; the quick-connect member 17 and the quick-connect groove 22 are adapted to perform quick connection; the buffer member 18 and the annular groove 21 are adapted to provide cushioning.

[0055] In this application, combined with Figure 4 As shown, along the direction from the rear end to the front end of the cutting part, an annular groove 21 and a quick-connect groove 22 are arranged in sequence; wherein, the annular groove 22 is adapted to the buffer member 18 and is elastically connected to each other.

[0056] In this application, after the cutting part is inserted into the holding part, the quick-connect member 17 engages with the quick-connect slot, thereby locking the cutting part and achieving a fixed connection. The specific engaging structure is not limited in this application and will not be described in detail.

[0057] In this application, the fit between the buffer and the annular groove is used to buffer the insertion action of the cutting part and prevent failure to insert according to the preset size. The buffer and the annular groove are elastically fitted to prevent the occurrence of insufficient buffering.

[0058] Furthermore, the annular groove 21 is provided at the tail end of the cutting part 20, and is an annular groove formed by indentation along the outer side of the cutting part 20, and the longitudinal section of the annular groove 21 is triangular; the buffer member 18 is an annular buckle with a corresponding shape, and the buffer member 18 is independently provided with the gripping part 10.

[0059] In this application, an annular groove with a triangular longitudinal section is provided, and the buffer is also a corresponding triangular buckle. In this way, when the cutting part is inserted, it is easy to pull out; when it is pulled out, it is easy to insert. This avoids affecting the detachable connection of the cutting part.

[0060] In this application, a cross section refers to a planar figure obtained by cutting a geometric or solid object with a plane along a specific direction (usually the axis of the object).

[0061] In this application, a longitudinal section refers to a planar figure obtained by cutting an object with a plane along a direction parallel to the object's axis. Compared to a cross section, a longitudinal section shows more about the shape and changes of the object in the axial direction.

[0062] In short, the cross section is the cross section of an object in the horizontal direction, and the longitudinal section is the cross section of an object in the vertical direction.

[0063] Furthermore, the front end of the gripping part 10 is provided with a columnar opening, and the buffer 18 is disposed in the cylindrical space at the bottom of the columnar opening; the buffer 18 is connected to the cylindrical space by a first spring 23 and a second spring 24.

[0064] Furthermore, the first spring 23 and the second spring 24 abut against the front end face and the rear end face of the buffer member 18 respectively to restrict the buffer member 18; the other end of the first spring 23 and the second spring 24 is fixed in the cylindrical space.

[0065] Furthermore, the spring constant of the second spring 24 is greater than the spring constant of the first spring 23.

[0066] In this application, two springs are provided to achieve the buffering effect of the buffer 18. The second spring has a larger spring constant, so that it is easier for the buffer 18 to rebound back to the preset position after it moves backward.

[0067] Preferably, a trigger is also provided, which is connected to the bottom surface of the cylindrical space at the bottom of the cylindrical opening via a third spring 25 (that is, similar to the arrangement of the second spring 24). The trigger is positioned with a small gap between it and the cutting part in the installed state. Thus, during normal installation, the trigger will not be activated; however, if the cutting part extends too far and fails to achieve fixation (or if the dimensions of the cutting part change), the trigger will be activated, thus reminding the user to replace or reinstall it.

[0068] In this way, by setting a trigger, the accuracy of the cutting part and the gripping part after installation can be guaranteed.

[0069] In this application, the trigger can be an electrical component such as a limit switch, or other components; no specific limitation is made in this application.

[0070] Furthermore, a rotatable component 11 is nested on the outer side of the gripping part 10, and the rotatable component 11 is fixedly connected to the positioning bracket 3.

[0071] The rotatable component is connected to the outside of the grip 10 and can rotate around the axis of the grip; the rotatable component is fixedly connected to the positioning bracket, so that the positioning bracket rotates synchronously when rotating.

[0072] Furthermore, the outer side of the gripping part 10 is recessed inward to form a thin shaft 12; a roller 13 is provided on the thin shaft 12, and the rotatable part 11 has a cylindrical through hole 15 inside, which is sleeved on the roller 13 so that the rotatable part 11 can rotate around the thin shaft 12.

[0073] Among them, the full name of the roller is rolling bearing, which is used to support the rotating shaft and the parts on the shaft, and to maintain the normal working position and rotational accuracy of the shaft.

[0074] In this application, the inner side of the roller is a thin shaft, and the outer side is a rotatable component, so that the rotatable component can rotate flexibly around the thin shaft.

[0075] In this application, the diameter of the thin shaft is smaller than the diameter of the grip portion, thereby forming an inward recess to accommodate the roller and part of the rotatable component.

[0076] Furthermore, a pressing member 14 is provided on the part of the gripping part 10 near the thin shaft 12. The pressing member 14 has an inverted U-shaped structure, with one end extending out of the gripping part 10 for pressing; the other end extends out from one side of the thin shaft 12 to abut against the cylindrical through hole 15.

[0077] In this application, as can be seen from the cross-section, the pressing member has an inverted U-shaped structure with one side longer than the other; the shorter end extends from one side of the thin shaft 12 to abut against the cylindrical through hole of the rotatable member and fix the rotatable member; the longer end extends out of the gripping part, thereby facilitating external pressing.

[0078] In this way, when the long end is pressed, the short end moves synchronously towards the axis and no longer abuts against the cylindrical through hole 15, allowing the rotatable part to rotate freely; when the long end is released, the short end moves synchronously away from the axis and abuts against the cylindrical through hole 15, fixing the rotatable part.

[0079] Preferably, a return spring is provided at one long end of the pressing member 14. One end of the return spring abuts against the pressing member 14 and the other end abuts against the gripping part, so that the long end extends outward without external force.

[0080] Furthermore, the inner wall of the cylindrical through hole 15 is provided with a plurality of slots 16 near one end of the pressing member 14. The slots 16 are adapted to the shape of one end of the pressing member 14 to lock the rotatable member 11.

[0081] In this way, the shorter end of the pressing component is inserted into the slot, locking the rotatable component; when pressed, the shorter end of the pressing component is removed from the slot, and the rotatable component can rotate freely.

[0082] Preferably, the multiple slots 16 are evenly distributed along the circumferential direction, which facilitates rotation and locking, and improves the uniformity and accuracy of fixing the rotatable parts.

[0083] Furthermore, the blade is crescent-shaped, high on both sides and low in the middle, and the heat treatment hardness of the blade is 52-56 HRC.

[0084] Furthermore, the width of the blade ranges from 1.5cm to 3cm.

[0085] Furthermore, the blade and the tail end axis of the cutting part 20 form an inward arc transition angle of 30 degrees.

[0086] In this application, through a precise mechanical structure and auxiliary system, the position and direction of the bone scalpel during the operation are precisely controlled, thereby improving the accuracy and safety of the operation.

[0087] In this application, the main body of the bone knife is made of 5Cr15MoV material; the blade is crescent-shaped, higher at both ends and lower in the middle, and the blade width varies from 1.5cm to 3.0cm as needed. The distal end of the blade transitions inward at a 30-degree arc angle to the handle, and all edges of the bone knife are rounded. The heat treatment hardness of the main body of the bone knife is 52-56 HRC.

[0088] In this application, the grip section has an anti-slip function and is designed with a good grip feel, conforming to ergonomics. The end of the handle has a reinforced design suitable for heavy striking and can withstand repeated striking over a long period of time.

[0089] In this application, the grip itself has a laser-engraved direction indicator (an arrow in the middle and dotted lines on both sides, or different colored lines can be used for marking), which can prevent the rotation and locking structure from failing during surgery and can promptly detect and adjust the direction of the bone scalpel blade, thus playing a dual protection role.

[0090] In this application, the double-shoulder bone scalpel is equipped with an adjustable direction control mechanism: pressing the pressing element allows the positioning frame to rotate clockwise or counterclockwise, facilitating bone cutting by the surgeon; releasing the pressing element locks the positioning frame and the bone scalpel body, preventing further rotation. This device allows the surgeon to adjust the direction of the bone scalpel during surgery according to the surgical situation and the patient's condition, and the blade needs to be repositioned and verified after adjustment.

[0091] In this application, the double-shoulder bone scalpel includes a rotating shaft (thin shaft) and a locking mechanism to ensure that the bone scalpel can be fixed in place after being adjusted to the ideal angle.

[0092] In one embodiment, the positioning frame / display frame is provided with a plurality of positioning balls, which are irregularly shaped and suitable for positioning the pose of the optical probe.

[0093] Specifically, the surface of the positioning ball is coated with a coating; this allows for better recognition.

[0094] Specifically, the positioning spheres are arranged in an irregular shape, that is, the shape with the positioning spheres at the top is an irregular shape; by setting them irregularly, it can be avoided that the shape formed by the positioning spheres will be similar to or overlap with the original shape after spatial movement or flipping, thus avoiding interference with positioning.

[0095] Furthermore, the dual-shoulder osteotome device can be connected to the robotic arm. The trolley's screen can clearly display the precise position of the pelvis and osteotome during surgery in real time, allowing the surgeon to operate and adjust accordingly. The computer will also provide corresponding osteotomy planning paths and suggestions in real time.

[0096] In this application, additional positioning equipment is used to capture and acquire the pose information of the first reference array (grip) and the second reference array (blade).

[0097] In this application, a computer-aided system connected to a positioning device is used to construct a three-dimensional model of the bone knife and the three-dimensional spatial position of the blade positioning module in a virtual scene, and to calibrate the pose of the three-dimensional model of the bone knife in the virtual scene based on the pose information obtained by the positioning device.

[0098] In the description of this application, it should be understood that the terms "high temperature" and "low temperature" are relative temperatures, not absolute temperatures, and are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have an absolute temperature, and therefore should not be construed as a limitation of this application.

[0099] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0100] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0101] In this application, unless otherwise expressly specified and limited, the terms "set up," "connected," "linked," "connected," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0102] In this application, unless otherwise expressly specified and limited, the first feature being "on" or "below" the second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0103] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0104] It should be noted that numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some embodiments, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0105] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A double-shoulder bone scalpel capable of precise intraoperative positioning and directional control, characterized in that, include: The bone scalpel body has a blade for cutting solid tissue; A positioning bracket, connected to the bone blade body, is used to indicate the position and orientation of the shoulder bone blades; The blade positioning module, designed separately from the double shoulder bone knife, is used to calibrate the blade. In the connection between the positioning bracket and the bone knife body, there is an active state in which the positioning bracket rotates along the bone knife body, and a locked state in which the positioning bracket is locked at a certain rotation angle. The bone knife body includes a gripping part and a cutting part. The gripping part is rotatably connected to the positioning bracket, and the cutting part is provided with the blade. The gripping part and the cutting part are detachably connected, and the connection between the gripping part and the cutting part is a unique orientation connection. The cutting part is long and rod-shaped, with an annular groove and a quick-connect groove arranged sequentially in the forward direction at the rear end; the front end of the gripping part is provided with a quick-connect component and a buffer component arranged sequentially in the rearward direction; the quick-connect component and the quick-connect groove are adapted to each other for quick connection; the buffer component and the annular groove are adapted to provide cushioning. The annular groove is an annular groove formed by recessing inward along the outer side of the cutting part at the tail end, and the longitudinal section of the annular groove is triangular; the buffer is an annular buckle with a corresponding shape, and the buffer is independently set from the gripping part.

2. The double shoulder scalpel according to claim 1, which enables precise intraoperative positioning and directional control, is characterized in that... The blade positioning module includes a display frame and a blade groove. The shape of the blade groove is adapted to the blade. The display frame is used to indicate the position and orientation of the blade positioning module when the blade is inserted into the blade groove.

3. The double shoulder scalpel according to claim 1, which enables precise intraoperative positioning and directional control, is characterized in that... A rotatable component is nested on the outer side of the gripping part, and the rotatable component is fixedly connected to the positioning bracket.

4. The double shoulder scalpel according to claim 3, which enables precise intraoperative positioning and directional control, is characterized in that... The outer side of the gripping part is recessed inward to form a thin shaft; a roller is provided on the thin shaft, and the rotatable part has a cylindrical through hole, which is sleeved on the roller so that the rotatable part can rotate around the thin shaft.

5. The double shoulder scalpel according to claim 4, which enables precise intraoperative positioning and directional control, is characterized in that... The gripping part is provided with a pressing member near the thin shaft. The pressing member has an inverted U-shaped structure, with one end extending out of the gripping part for pressing; the other end extends out from one side of the thin shaft to abut against the cylindrical through hole.

6. The double shoulder scalpel according to claim 5, which enables precise intraoperative positioning and directional control, is characterized in that... The inner wall of the cylindrical through hole is provided with multiple slots near one end of the pressing member. The slots are adapted to the shape of one end of the pressing member to lock the rotatable member in place.

7. The double shoulder scalpel according to any one of claims 1-6, characterized in that, The blade is crescent-shaped, high on both sides and low in the middle, and the heat treatment hardness of the blade is 52-56 HRC.

8. The dual-shoulder bone scalpel according to any one of claims 1-6, characterized in that, The blade and the tail end axis of the cutting part form a 30-degree arc transition angle towards the inward side.

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