Reciprocating boning device

Abstract

The invention provides a reciprocating boning device. A module mounting groove for mounting a driving module and a waterway connecting pipe for filling water are arranged in a handle; the supporting structure is arranged in the handle and is connected with one end of the driving module; a fluid channel gap is formed in the end, close to the driving module, of the supporting structure and used for fluid to pass through. One end of the insertion part is connected with the handle; the other end of the insertion part is connected with the flat filing assembly; the water inlet channel penetrates through the fluid channel gap of the supporting structure, the far end of the module installation groove, the interior of the insertion part and the flat file assembly and is used for allowing cooling liquid to circulate. The fluid channel gap between the driving module and the supporting structure is adopted, the structural design is greatly simplified, vibration and noise are reduced, the operation comfort is improved, and meanwhile the water inlet channel is arranged so that lubrication, cooling and pressure maintaining of the operation space can be provided.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and specifically to a reciprocating bone removal device. Background Art

[0002] In bone removal surgeries, the performance of electric flat files has a crucial impact on surgical efficiency and safety. As a key tool during the surgery, the electric flat file needs to be able to efficiently and accurately remove the tissue on the bone surface while ensuring safety and patient comfort during the surgery.

[0003] Many current flat file designs on the market have obvious deficiencies. First of all, many flat files lack water inlet channels, which means that the file head and the surgical area cannot be effectively cooled during the surgery. Since bone removal surgeries usually generate a large amount of heat, the lack of a cooling mechanism will cause the file head to overheat, which may damage the bone tissue and even lead to more serious surgical complications. In addition, the overheated file head will also limit the working speed of the flat file because it needs to stop frequently for cooling, thus reducing the surgical efficiency.

[0004] Many existing flat file designs use an eccentric connecting rod structure to convert the rotational motion of the motor into the reciprocating linear motion of the flat file head. Although this structure can achieve motion conversion to a certain extent, it often leads to problems such as complex structure and large vibration. The complex structure not only increases the manufacturing cost and maintenance difficulty, but also may affect the reliability and durability of the flat file. And the large vibration will affect the stability and accuracy of the surgical operation, increasing the surgical risk. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a reciprocating bone removal device to at least solve one of the problems mentioned in the above background art. The present invention can significantly improve thermal management and also improve the bone grinding efficiency, meeting the clinical requirements for high-efficiency and low-damage surgical tools.

[0006] To achieve the above purpose, the present invention is realized through the following technical solutions: A reciprocating bone removal device includes a handle, a support structure, an insertion part, a flat file assembly, and a water inlet channel. A module installation groove for installing a drive module and a waterway connecting pipe for water filling are provided inside the handle. The support structure is arranged inside the handle and is connected to one end of the drive module. A fluid channel gap is provided at one end of the support structure close to the drive module for fluid to pass through. One end of the insertion part is connected to the handle, and the other end of the insertion part is connected to the flat file assembly. The water inlet channel passes through the fluid channel gap of the support structure, the distal end of the module installation groove, the inside of the insertion part, and the flat file assembly for the coolant to flow through.

[0007] In a reciprocating boning device provided by the present invention, the driving module includes an outer fixed ring, a bearing, and an elastic sealing ring. One end of the outer fixed ring is connected to the support structure, and the other end of the outer fixed ring is connected to the bearing. An elastic sealing ring is arranged between one end of the outer fixed ring away from the support structure and the bearing. The elastic sealing ring is provided with an elastic boss for preventing liquid from flowing outside the handle.

[0008] In a reciprocating boning device provided by the present invention, an inner sliding assembly is arranged inside the outer fixed ring, and a second positioning pin is arranged on the side of the outer fixed ring.

[0009] In a reciprocating boning device provided by the present invention, the inner sliding assembly includes a spring, an inner sliding ring, and a connecting pipe. One end of the inner sliding ring close to the bearing is provided with a contact pin. The other end of the inner sliding ring away from the contact pin is connected to the connecting pipe. The spring is sleeved on one end of the connecting pipe close to the inner sliding ring and is connected to the inner sliding ring for stabilizing the reciprocating motion of the inner sliding ring. A first positioning groove is arranged on the side of the inner sliding ring for cooperating with the second positioning pin on the side of the outer fixed ring to complete the positioning of the driving module.

[0010] In a reciprocating boning device provided by the present invention, the motion assembly includes a motor front fork and a spatial cam. The motor front fork is connected to one end of the spatial cam, and the other end of the spatial cam is connected to the contact pin for completing the reciprocating motion of the inner sliding ring. A spatial cam groove is arranged on the spatial cam, and an installation groove is arranged at a position near the highest point of the spatial cam groove. The installation groove abuts against the contact pin to apply a contact pressure to the contact pin.

[0011] In a reciprocating boning device provided by the present invention, a multi-layer pipe device is arranged inside the insertion part. The multi-layer pipe device includes an outer pipe, a middle pipe, and an inner pipe. The inner pipe is located inside the outer pipe, and the middle pipe is located between the inner pipe and the outer pipe. The first positioning pin is arranged at one end of the middle pipe for fixing the connection between the outer pipe and the middle pipe. A fixing piece is also arranged on the middle pipe for fixing the connection between the inner pipe and the middle pipe.

[0012] In a reciprocating boning device provided by the present invention, a first connecting pipe is arranged at one end of the outer pipe away from the first positioning pin. One end of the first connecting pipe is connected to the middle pipe, and the other end of the first connecting pipe is provided with a third groove and a bearing installation section. The third groove is connected to the bearing installation section.

[0013] In a reciprocating bone removal device provided by the present invention, the flat file assembly includes a second connecting pipe, a file head bending section, and a bone removal file head. One end of the file head bending section is connected to the bone removal file head, the other end of the file head bending section is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the drive shaft.

[0014] In a reciprocating bone removal device provided by the present invention, the bearing installation section includes a fixed seat and a second positioning groove. The fixed seat is located inside the bearing installation section. The second positioning groove is provided at one end of the bearing installation section close to the third groove. A positioning boss is provided above the fixed seat, and a liquid channel relief groove is provided below the fixed seat. The positioning boss is connected to the second positioning groove.

[0015] In a reciprocating bone removal device provided by the present invention, a liquid channel boss is further provided along the length direction of the inner tube. The liquid channel boss is in contact with the outer surface of the inner tube. First and second grooves that are offset from each other are further provided along the horizontal direction of the inner tube to ensure contact between the liquid and the drive shaft.

[0016] Advantages of the present invention:

[0017] 1. For a reciprocating bone removal device provided by the present invention, according to the surgical requirements, the doctor can timely open the waterway connecting pipe inside the handle, so that the cooling liquid can smoothly enter and pass through the waterway connecting pipe, pass through the fine gaps of the support structure, and continuously flow to the distal end of the module installation groove. The cooling liquid flows from the insertion part to the flat file assembly and flows in the preset path, timely taking away the heat generated during the operation of the flat file assembly, ensuring the stable operation of the device at high speed. The lubricating effect of the coolant reduces the friction between the flat file and the bone tissue, improves the smoothness and efficiency of the operation, and effectively cools the working area. The coolant also helps to remove the debris generated during the operation and finally is smoothly discharged through a special liquid channel, ensuring the clarity of the surgical field and the smoothness of the operation without obstruction.

[0018] 2. Compared with the traditional complex eccentric connecting rod structure, this device adopts an innovative drive module and support structure. This design not only greatly simplifies the overall structure, reduces the vibration and noise levels during operation, but also significantly improves the comfort during the surgical operation process, bringing a smoother and more efficient surgical experience to medical staff.

[0019] 3. The connection between the spatial cam and the abutting pin ingeniously achieves the smooth and controllable reciprocating motion of the inner sliding ring. This not only enhances the stability and predictability of the grinding head movement, effectively reduces the vibration and noise caused by unsteady movement, optimizes the surgical environment, but also improves the comfort and feel of the operator, making the surgical process smoother. This mechanism reduces the risk of misoperation during the surgical process, provides more precise and safe surgical control for the doctor, and further ensures the surgical safety and treatment effect of the patient.

[0020] 4. The cooperation of the spring and the elastic sealing ring in this application not only ensures the tightness and sealing performance of the device, improves its practicality, but also makes the device simple to disassemble and maintain, easy to clean and operate better. This prevents the performance degradation or damage of the instrument caused by long-term use or improper cleaning. At the same time, it can also extend the service life of the equipment, and improve the reliability and stability of the device operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a reciprocating bone removal device provided by an embodiment of this application;

[0022] Figure 2 It is a schematic diagram of a reciprocating bone removal device with a waterway connecting pipe provided by an embodiment of this application;

[0023] Figure 3 It is a partial exploded view of a reciprocating handle and its bone removal device provided by an embodiment of this application:

[0024] Figure 4 It is a schematic diagram of the inside of the handle of a reciprocating handle and its bone removal device provided by an embodiment of this application:

[0025] Figure 5 It is a partial enlarged view of a reciprocating handle and its bone removal device provided by an embodiment of this application;

[0026] Figure 6 It is an exploded schematic diagram of a bone removal rasp with an internal liquid channel provided by an embodiment of this application;

[0027] Figure 7 It is a schematic diagram of the inner tube structure of a bone removal rasp with an internal liquid channel provided by an embodiment of this application;

[0028] Figure 8 It is a schematic diagram of the fixed seat structure of a bone removal rasp with an internal liquid channel provided by an embodiment of this application;

[0029] Figure 9 It is a partial enlarged schematic diagram of a bone removal rasp with an internal liquid channel provided by an embodiment of this application;

[0030] 1. Handle

[0031] 2. Driving module; 21. Outer fixed ring; 211. Inner sliding component; 2111. Spring; 2112. Connecting pipe; 2113. Inner sliding ring; 21131. First positioning groove; 21132. Contact pin; 212. Second positioning pin; 22. Bearing; 23. Elastic sealing ring; 231. Sealing boss;

[0032] 3. Module installation groove;

[0033] 4. Moving component; 41. Spatial cam; 411. Spatial cam groove; 4111. Installation groove; 42. Motor front fork;

[0034] 5. Waterway connecting pipe;

[0035] 6. Insertion part; 61. Insertion part mounting hole; 611. Third positioning groove;

[0036] 7. Multilayer pipe device; 71. Outer pipe; 72. Middle pipe; 721. First positioning pin; 722. Fixed piece;

[0037] 73. Inner pipe; 731. Liquid channel boss; 732. First groove; 733. Second groove; 734. Driving shaft;

[0038] 8. Flat file assembly; 81. Second connecting pipe; 82. File head bending section; 83. Deboning flat file;

[0039] 9. Water inlet channel;

[0040] 10. Support structure;

[0041] 20. First connecting pipe;

[0042] 30. Bearing installation section; 301. Fixed seat; 3011. Liquid channel relief groove; 3012. Positioning boss; 302. Second positioning groove;

[0043] 40. Third groove; Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0045] Embodiment 1

[0046] The applicant has found that in the existing technology, electric flat files mostly adopt an eccentric connecting rod structure. The design principle is to effectively convert the rotational motion of the motor into the reciprocating linear motion of the flat file, thereby realizing the bone removal operation. The eccentric connecting rod structure enables the rotational motion to be converted into the required linear motion through the cooperation of the connecting rod and the eccentric wheel. However, due to the interaction between the connecting rod and the eccentric wheel, relatively large vibrations are likely to occur. These vibrations not only reduce the accuracy of the operation but may also cause unnecessary damage to the surgical site, thus affecting the safety of the operation and the recovery of the patient. Therefore, there is an urgent need for a reciprocating handle and its bone removal device in clinical practice.

[0047] In view of this, in order to solve the above problems, the applicant has proposed a reciprocating handle and its bone removal device. Please refer to Figure 3 , Figure 3 which is a partial exploded view of a reciprocating handle and its bone removal device provided by an embodiment of the present application; the reciprocating handle and its bone removal device include: a motion assembly 4, a bearing 22, and an inner sliding assembly 211.

[0048] Among them, the motion assembly 4 may include a spatial cam 41, the bearing 22 may be sleeved outside the motion assembly 4, the inner sliding assembly 211 may include an inner sliding ring 2113, and a contact pin 21132 is provided on the inner sliding ring 2113. The spatial cam 41 is connected to the contact pin 21132 for completing the reciprocating motion of the inner sliding ring 2113.

[0049] The above content realizes the smooth and controllable reciprocating motion of the inner sliding ring 2113 by connecting the spatial cam 41 with the contact pin 21132. This not only enhances the stability and predictability of the grinding head motion, effectively reduces the vibrations and noises generated due to unsteady motion, optimizes the surgical environment, but also improves the comfort and feel of the operator, making the surgical process smoother. This mechanism reduces the risk of misoperation during the surgical process, provides more precise and safe surgical control for the doctor, and further ensures the surgical safety and treatment effect of the patient.

[0050] In this embodiment, it may further include a module installation groove 3. The bearing 22 is installed in the module installation groove 3. The bearing 22 not only ensures the smoothness of rotation but also improves the stability and durability of the overall structure. The motion assembly 4 is also installed on the bearing 22. The motion assembly 4 provides strong power support and can also ensure that the module can operate precisely and efficiently under various complex conditions.

[0051] Refer to Figure 4 as shown in Figure 4It is an internal schematic diagram of a reciprocating handle and its boning device provided by an embodiment of the present application. To further improve the overall performance, the module installation groove 3 may further include a drive module 2 and an elastic sealing ring 23. The drive module 2 is composed of an outer fixed ring 21 and a support structure 10. The outer fixed ring 21 and the support structure 10 can be integrally arranged, which not only simplifies the installation process but also enhances the structural stability. An elastic sealing ring 23 is also provided between the end face near the bearing 22 in the module installation groove 3 and the outer fixed ring 21. The elastic sealing ring 23 can prevent impurities such as dust and moisture from entering, keep the internal environment clean, and can also relieve the impact caused by vibration to a certain extent, prolonging the service life of the module.

[0052] To prevent the possible leakage of liquid during the operation process to the outside of the handle 1, the elastic sealing ring 23 not only has a sealing boss 231 provided inside but also has a corresponding sealing boss 231 provided outside, forming a double guarantee. The sealing bosses 231 provided both inside and outside not only improve the cleanliness and dryness of the operation environment, providing a safer and more reliable operation condition for the doctor, but also effectively extend the service life of the surgical instrument, ensuring its durability and laying a solid foundation for the smooth progress of the operation.

[0053] In addition, referring to Figure 3 , Figure 3 It is a partial exploded view of a reciprocating handle and its boning device provided by an embodiment of the present application. An inner sliding component 211 may be provided inside the outer fixed ring 21. The inner sliding component 211 may further include a spring 2111 and a connecting pipe 2112. One end of the inner sliding ring 2113 far from the abutting pin 21132 is connected to the connecting pipe 2112, enabling the two to work together smoothly for a sliding action. Due to its own elastic characteristics, the spring 2111 is sleeved on one end of the connecting pipe 2112 close to the inner sliding ring 2113 and is tightly connected to the inner sliding ring 2113. Using the elasticity of the spring 2111 itself, it can provide the necessary stable force and buffering effect for the reciprocating movement of the inner sliding ring 2113, ensuring that it can respond flexibly and maintain the smoothness and controllability of the movement during the working process. The precise cooperation of the entire inner sliding component 211 not only improves the performance and reliability of the entire device but also enables it to show more excellent adaptability and durability in the face of complex situations.

[0054] In addition, a second positioning pin 212 can be added to the side of the outer fixed ring 21, and the second positioning pin 212 can cooperate with the first positioning grooves 21131 on both sides of the inner sliding ring 2113 with extremely high precision, so as to achieve tight and stable positioning between the two. This design is not only meticulous, but also effective: it ensures that the inner sliding ring 2113 always moves along an accurate trajectory during the reciprocating motion, avoiding any unnecessary deviation or shaking. This tight positioning and matching can not only enhance the stability of the entire structure, so that the module mounting slot 3 can show excellent stability and durability in the face of various complex working conditions, but also improve the overall performance of the device, and provide a strong guarantee for its reliability and durability in practical applications.

[0055] The motion component 4 may further include a motor front fork 42, which is not only structurally stable but also connected to the space cam 41. Through the efficient drive of the motor front fork 42, the space cam 41 can be driven to rotate stably and powerfully. This design not only enhances the driving force and stability of the motion component 4, but also ensures the accuracy and reliability of the space cam 41 during the rotation process, adding new impetus to the performance improvement of the entire module mounting slot 3, enabling it to cope with various complex situations with ease.

[0056] refer to Figure 5 , Figure 5 A partial enlarged view of a reciprocating handle and its bone removal device provided in an embodiment of the present application, a space cam 41 groove can be provided on the space cam 41, and an interference pin 21132 that cooperates with the space cam 41 groove is provided on the inner sliding ring 2113. When the space cam 41 rotates driven by the motor front fork 42, the space cam 41 groove thereon will interact with the interference pin 21132, thereby accurately driving the inner sliding ring 2113 to reciprocate. This design not only ensures the stability and accuracy of the movement of the inner sliding ring 2113, but also greatly improves the dynamic performance and response speed of the entire module mounting slot 3.

[0057] At the same time, the position of the proximal high point of the spatial cam 41 groove is provided with an installation groove 4111, which can facilitate installation and ensure the stability of the structure. When the spatial cam 41 rotates, the spatial cam 41 groove at the proximal high point gives a stable resistance pressure to the resistance pin 21132 through the upper side of the spatial cam 41, thereby achieving a close fit between the two. The elastic characteristics of the spring 2111 also ensure the stability and reliability of the resistance pin 21132 in the rotation process of the spatial cam 41, and also improve the installation efficiency, further enhancing the durability and practicality of the entire module installation groove 3.

[0058] refer to Figure 2 , Figure 4 , Figure 2Schematic diagram of the waterway connection pipe of a reciprocating bone removal device provided by an embodiment of the present application Figure 4 Internal schematic diagram of a reciprocating handle provided by an embodiment of the present application. The reciprocating handle 1 includes a handle 1 that is convenient for holding and connecting a driving motor and a waterway. One end of the handle 1 is provided with a waterway connection pipe 5. Inside the handle 1, there are an insertion part 6 mounting hole and a module mounting groove 3. The upper end of the insertion part 6 mounting hole is provided with a second positioning groove 302 to ensure the precise connection of the insertion part 6. The insertion part 6 is arranged at the distal end of the handle 1, and a reciprocating bone removal device is provided at the distal end of the insertion part 6. This design significantly improves the functionality and practicality of the entire device.

[0059] During use: The rotation of the motor drives the rotation of the motor front fork 42, and then drives the spatial cam 41 to start rotating. As the spatial cam 41 continues to rotate, the groove of the spatial cam 41 drives the abutting pin 21132 to perform corresponding movements, thereby realizing the reciprocating motion mechanism of the inner sliding ring 2113. It should be noted that when the abutting pin 21132 is at the highest point position of the spatial cam 41, the spring 2111 utilizes its inherent elastic potential energy to apply an upward force to the inner sliding ring 2113 to ensure that the abutting pin 21132 is always located in the groove of the spatial cam 41 when passing through the mounting groove 4111.

[0060] Embodiment 2

[0061] The applicant found that in the existing technology, although some electric flat files are provided with liquid channels, the channel diameters are too large and require more space to accommodate, which makes them unable to reach some narrow or complex positions, thus restricting the scope and accuracy of the operation. Therefore, there is an urgent need for a bone removal flat file with an internal liquid channel in clinical practice.

[0062] To solve the above problems, the applicant proposed a bone removal flat file with an internal liquid channel.

[0063] Please refer to Figure 6 , Figure 6 Explosion schematic diagram of a bone removal flat file with an internal liquid channel provided by an embodiment of the present application. The bone removal flat file with an internal liquid channel includes: an outer tube 71, a first connecting pipe 20, an inner tube 73, a middle tube 72, a liquid channel boss 731, a flat file assembly 8, a first positioning pin 721, and a driving shaft 734.

[0064] Wherein, one end of the outer tube 71 may be provided with a first connecting tube 20. The inner tube 73 is disposed inside the outer tube 71. A liquid passage boss 731 may be provided on one side of the inner tube 73. The middle tube 72 is located between the annular cavity formed by the inner tube 73 and the outer tube 71. One end of the middle tube 72 is connected to one end of the first connecting tube 20. A first positioning pin 721 may be provided at the other end of the middle tube 72 for fixing the connection between the outer tube 71 and the middle tube 72. The flat file assembly 8 is connected to the first connecting tube 20. The drive shaft 734 is located in the inner tube 73 and is connected to the flat file assembly 8.

[0065] In the above solution, the inner tube 73 is sleeved on the drive shaft 734, the middle tube 72 is sleeved outside the inner tube 73, and the outer tube 71 is sleeved outside the middle tube 72. The three together form a smooth liquid passage, ensuring that the liquid can flow freely in the passage. In addition, the outer tube 71 and the middle tube 72 are firmly connected by the first positioning pin 721, which not only enhances the structural stability but also facilitates installation and maintenance.

[0066] In this embodiment, referring to Figure 7 , Figure 7 FIG. is a schematic structural diagram of the inner tube of a deboning flat file with an internal liquid passage provided by an embodiment of the present application. First grooves 732 and second grooves 733 that are offset from each other may be provided on both sides of the inner tube 73, which can ensure that the liquid can fully flow through and contact the drive shaft 734, thereby effectively reducing the heat accumulation during the working process. Moreover, the outer tube 71 sleeved outside the middle tube 72 can be flexibly bent according to the surgical requirements, greatly broadening the surgical field of view and providing a broader operating space and a more accurate operating angle for the doctor.

[0067] In addition, one end of the outer tube 71 may be provided with a first connecting tube 20. When the first connecting tube 20 is inserted into the outer tube 71, the first connecting tube 20 can be fixed to the outer tube 71 through a welding process, ensuring the firmness and tightness of the connection. The other end of the first connecting tube 20 may also be provided with a third groove 40 and a bearing 22 installation section. The bearing 22 installation section is connected to the third groove 40, providing a reliable support for the precise installation of the bearing 22.

[0068] Meanwhile, the bearing 22 installation section may include a fixed seat 301 and a second positioning groove 302. The fixed seat 301, as the core component of the bearing 22 installation section, is embedded inside the bearing 22 installation section to ensure the precise and stable installation of the bearing 22. The second positioning groove 302 may be provided at one end of the bearing 22 installation section close to the third groove 40, providing a reliable basis for the positioning of the fixed seat 301. Referring to Figure 8 , Figure 8Schematic diagram of the fixed seat structure of a deboning flat file with an internal liquid channel provided by an embodiment of the present application. A positioning boss 3012 can be provided above the fixed seat 301. The setting of the second positioning groove 302 and the positioning boss 3012 further improves the installation accuracy and reliability. A liquid channel relief groove 3011 can also be provided below the mounting seat, effectively preventing the liquid from interfering with the missile installation section of the bearing 22 and providing a channel for the smooth flow of the liquid, thus ensuring the normal operation of the entire structure.

[0069] The applicant provides a deboning flat file with an internal liquid channel, which further includes a flat file assembly 8. The flat file assembly 8 includes a second connecting pipe 81, a file head bending section 82, and a deboning file head 83. One end of the file head bending section 82 is connected to the deboning file head 83 to ensure flexibility during use. The diameter of the deboning file head 83 is carefully considered and can be preferably 3 mm - 10 mm to meet different surgical requirements. Moreover, the deboning file head can be flexibly installed in the third groove 40, improving the convenience of use. The other end of the file head bending section 82 is connected to one end of the second connecting pipe 81, and the other end of the second connecting pipe 81 is connected to the drive shaft 734. The file head bending section 82 is connected to the drive shaft 734 through the second connecting pipe 81. This connection method can be achieved in various ways, such as crimping at both ends, threaded connection, welding, or glue bonding, etc., thus meeting the requirements in different application scenarios. The flat file assembly 8 not only has excellent performance and stability but also can adapt to various complex surgical operations, providing great convenience for doctors.

[0070] In addition, the cross-sectional shape of the file head bending section 82 can be various forms such as circular or waist-shaped. The circular cross-sectional design can provide uniform cutting force and good rotational stability, suitable for most conventional surgical scenarios; while the waist-shaped cross-sectional design can reduce the damage to healthy tissues while ensuring the cutting efficiency, especially suitable for complex surgeries with extremely high precision requirements.

[0071] In terms of material, the file head bending section 82 can also be made of high-strength and corrosion-resistant materials such as stainless steel or titanium alloy. Stainless steel has good mechanical properties and wear resistance, which can meet the strength and durability requirements of most surgical instruments; while titanium alloy, with its light weight, high strength, and good biocompatibility, has become the preferred material for high-end surgical instruments, which can further improve the surgical accuracy and patient comfort.

[0072] To make the inner tube 73 and the middle tube 72 more firmly fixed, a fixing piece 722 can be provided on the middle tube 72. The fixing piece 722 can enhance the connection strength between the inner tube 73 and the middle tube 72 through its own deformation characteristics, and also ensures that the two will not loosen easily due to external forces during use. A first positioning pin 721 can also be provided on the middle tube 72. The outer tube 71 and the middle tube 72 are firmly connected through the first positioning pin 721, so that the bone rasp 83 can withstand greater pressure and vibration during the operation, thus ensuring the accuracy and safety of the operation. This not only enhances the structural stability, but also the connection method of the first positioning pin 721 simplifies the installation and maintenance process. Doctors or technicians can easily disassemble and assemble the outer tube 71 and the middle tube 72 through the first positioning pin 721, which not only improves work efficiency, but also provides great convenience for subsequent cleaning, maintenance and repair work.

[0073] To ensure a more secure fixation between the inner tube 73 and the middle tube 72, a fixing piece 722 can also be added to the middle tube 72. With its excellent deformation characteristics, the fixing piece 722 can effectively enhance the connection strength between the inner tube 73 and the middle tube 72, thus ensuring that the two are not easily loosened even under external forces during the surgical operation. The design of the fixing piece 722 not only improves the overall structural stability, but also provides a solid guarantee for the smooth progress of the operation.

[0074] In a bone rasp 83 with a liquid channel provided in the present application, a handle 1 can also be included. A waterway connecting pipe 5 can be provided inside the handle 1. The waterway connecting pipe 5 is connected to the outer tube 71 to form a smooth liquid transmission channel. The liquid flows through the waterway connecting pipe 5, passes through the liquid channel boss 731 and flows inside the outer tube 71, and then flows out through the liquid channel relief groove 3011.

[0075] To achieve a detachable connection between the second connecting pipe 81 and the drive shaft 734, a threaded connection method can be adopted. Specifically, an internal thread that perfectly matches the external thread of the drive shaft 734 is provided on the inner wall of the second connecting pipe 81. During the assembly process, the drive shaft 734 is inserted into the second connecting pipe 81, and by rotating the drive shaft 734, the two can be tightly locked. This connection method is not only simple to operate, but also stable and reliable, and can withstand a large working load. More importantly, it also has excellent anti-vibration performance, and can ensure the stable connection between the second connecting pipe 81 and the drive shaft 734 even in a complex and changeable environment, improving the working efficiency of the entire bone rasp 83.

[0076] In addition, the first connecting pipe 20 may have a bent portion. Having a certain angle of the first connecting pipe 20 can not only ensure that the flat file can directly reach the lesion location, thus avoiding unnecessary damage to the surrounding healthy tissues, but also avoid blocking the operator's field of view.

[0077] Generally speaking, the angle of the bent portion can be adjusted within a certain range to meet the requirements of different surgical scenarios. For example, in some complex or narrow surgical areas, a larger bending angle may be required to ensure that the first connecting pipe 20 can reach the lesion site; in other cases, a smaller bending angle may be needed to maintain the stability and precision of the operation. This not only improves the efficiency and success rate of the surgery, but also greatly reduces the operation burden of the doctor during the surgery, providing strong support for the smooth progress of the surgery.

[0078] Working principle: During the surgery, the doctor inserts the file head part of the bone removal file head into the part where the surgery is needed, and uses the bone removal file head of the flat file assembly 8 to perform bone removal operations. The doctor opens the waterway connecting pipe 5 as needed. The liquid first passes through the waterway connecting rod in the handle 1 and smoothly enters the liquid channel boss 731 part of the bone removal flat file 83. Subsequently, these liquids flow along the designed path. During the flowing process, the working area can be cooled and the generated debris can also be helped to be removed. Finally, the liquid flows out through the liquid channel relief groove 3011, ensuring the clarity of the surgical field of view and the smooth progress of the operation.

[0079] Embodiment 3

[0080] The present application also provides a reciprocating bone removal device system, including a reciprocating handle 1 and its bone removal device, a bone removal flat file 83 with a liquid channel inside, and a reciprocating flat file in the above embodiments. The three cooperate with each other to solve the current dilemma of the electric flat file.

[0081] The reciprocating flat file includes a handle 1, a support structure 10, an insertion part 6, a flat file assembly 8, and a water inlet channel 9.

[0082] Among them, a module installation groove 3 for installing a driving module 2 and a waterway connecting pipe 5 for water filling are provided inside the handle 1. The support structure 10 is arranged inside the handle 1 and is connected to one end of the driving module 2. A fluid channel gap is provided at one end of the support structure 10 close to the driving module 2 for fluid to pass through. One end of the insertion part 6 is connected to the handle 1; the other end of the insertion part 6 is connected to the flat file assembly 8. The water inlet channel 9 passes through the fluid channel gap of the support structure 10, the distal end of the module installation groove 3, the inside of the insertion part 6, and the flat file assembly 8 for the coolant to flow through.

[0083] In the above content, the liquid enters through the water channel connecting pipe 5, passes through the fluid channel gap of the supporting structure 10 through the water inlet channel 9, flows to the far end of the module mounting groove 3, and then passes through the outer tube 71 in the insertion part 6. The liquid flows along the liquid channel boss 731 and finally flows out through the liquid channel give way groove 3011. The water inlet channel 9 can provide lubrication, cooling and maintain the pressure of the operating space. When the flat file is running, the water inlet channel 9 can continuously supply coolant to take away heat in time, ensure the stable operation of the equipment at a high speed, and improve the smoothness and efficiency of the operation. In addition, the water inlet channel 9 can also ensure the space and field of view for minimally invasive surgery by maintaining the pressure of the operating space. It can not only significantly improve thermal management, but also improve bone grinding efficiency, meeting the clinical demand for efficient and low-damage surgical tools.

[0084] First, the driving module 2 may include an outer solid ring 21, a bearing 22 and an elastic sealing ring 23. One end of the outer solid ring 21 may be integrated with the support structure 10 to enhance the stability of the overall structure. The other end of the outer solid ring 21 is connected to the bearing 22. An elastic sealing ring 23 may be provided between the end of the outer solid ring 21 away from the support structure 10 and the bearing 22. An elastic boss may be provided on the elastic sealing ring 23 to prevent liquid from flowing out of the handle 1.

[0085] At the same time, an inner sliding component 211 can be provided in the outer fixed ring 21, and a second positioning pin 212 can be provided along the side of the outer fixed ring 21 in the horizontal direction. The inner sliding component 211 may include a spring 2111, an inner sliding ring 2113 and a connecting tube 2112. An interference pin 21132 is provided on the end of the inner sliding ring 2113 close to the bearing 22, and the end of the inner sliding ring 2113 away from the interference pin 21132 is connected to the connecting tube 2112. The spring 2111 is sleeved on the end of the connecting tube 2112 close to the inner sliding ring 2113 and connected to the inner sliding ring 2113, which is used to stabilize the reciprocating motion of the inner sliding ring 2113. A first positioning groove 21131 is provided on the side of the inner sliding ring 2113, which is used to cooperate with the second positioning pin 212 on the side of the outer fixed ring 21 to complete positioning.

[0086] refer to Figure 3 , an inner sliding assembly 211 can be arranged inside the outer fixed ring 21 to enhance its functionality. A second positioning pin 212 can be provided along the horizontal side of the outer fixed ring 21 to lay the foundation for precise positioning. The inner sliding assembly 211 can be composed of a spring 2111, an inner sliding ring 2113 and a connecting tube 2112. An abutment pin 21132 is installed at one end of the inner sliding ring 2113 close to the bearing 22, and the other end is connected to the connecting tube 2112. The spring 2111 is sleeved on one end of the connecting tube 2112 close to the inner sliding ring 2113, and is tightly connected to the inner sliding ring 2113, ensuring that the inner sliding ring 2113 can remain stable during reciprocating motion.

[0087] Moreover, a first positioning groove 21131 can be provided on the side surface of the inner sliding ring 2113, which is designed to perfectly cooperate with the second positioning pin 212 on the side of the outer fixed ring 21, so as to achieve an accurate and reliable positioning function. Such a structure not only improves the overall stability, but also greatly enhances the convenience and flexibility of use, enabling the component to exhibit excellent performance in various application scenarios.

[0088] To achieve the accurate and stable reciprocating motion of the inner sliding ring 2113, the motion component 4 can include a motor front fork 42 and a spatial cam 41. The motor front fork 42, as the output end of the power source, is firmly connected to one end of the spatial cam 41, ensuring the stable transmission of power. The other end of the spatial cam 41 is connected to the contact pin 21132 on the inner sliding ring 2113, and the rotation of the spatial cam 41 is used to drive the contact pin 21132.

[0089] To optimize the motion trajectory of the spatial cam 41 and strengthen the interaction with the contact pin 21132, a specific spatial cam groove 41 is provided on the spatial cam 41 to enhance the interaction with the contact pin 21132. An installation groove 4111 is provided at a position close to the highest point of the spatial cam groove 41. When the contact pin 21132 is at the highest point of the spatial cam 41, the spring 2111 pushes the inner sliding ring 2113 upward. At this time, the inner sliding ring 2113 has a tendency to move upward, and an acting force opposite to the spring 2111 is applied above the spatial cam 41. Then the position where the installation groove 4111 is set is at the highest point, which can apply a contact pressure to the contact pin 21132, thus ensuring the stability and accuracy of the inner sliding ring 2113 during the reciprocating motion.

[0090] To further improve the performance and functionality of the device, a multi-layer tube device 7 can be provided inside the insertion part 6. The multi-layer tube device 7 can be composed of three layers: an outer tube 71, a middle tube 72, and an inner tube 73, forming a precise and efficient internal structure. The inner tube 73 is located in the innermost layer and is arranged inside the outer tube 71, while the middle tube 72 is located between the inner tube 73 and the outer tube 71, forming a stable and orderly structural layer. In the first layer design, a first positioning pin 721 is provided at one end of the middle tube 72, and its function is to firmly fix the connection between the outer tube 71 and the middle tube 72, ensuring the stability and reliability of the entire multi-layer tube device 7. A fixing piece 722 is also provided on the middle tube 72. This design not only enhances the connection strength between the middle tube 72 and the inner tube 73, but also further improves the structural integrity of the entire device. Such a design not only reflects the extreme pursuit of details, but also ensures the excellent performance of the device in a complex surgical environment.

[0091] Meanwhile, referring to Figure 7, a liquid channel boss 731 is arranged on the side surface of the inner tube 73 along its length direction, which can optimize the flow path of the coolant and ensure that the coolant can fully contact the drive shaft 734, so as to effectively dissipate heat and lubricate. On the side surface of the inner tube 73 along the horizontal direction, a first groove 732 and a second groove 733 which are mutually offset are also arranged. The angles of the first groove 732 and the second groove 733 can be parallel and non-intersecting layouts, which can enhance the structural strength of the inner tube 73, ensure full contact between the liquid and the drive shaft 734, and ensure the cooling and lubrication effects even during high-speed operation.

[0092] In addition, a first connecting pipe 20 can be arranged at one end of the outer tube 71 far from the first positioning pin 721. The first connecting pipe 20 and the outer tube 71 can be fixed by welding. One end of the first connecting pipe 20 is connected to the middle tube 72, and a third groove 40 and a bearing 22 installation section can be arranged at the other end of the first connecting pipe 20. The third groove 40 is connected to the bearing 22 installation section. The designs of these two parts are closely connected, which not only optimize the structure of the connecting pipe 2112, but also provide accurate and stable support for the installation of the bearing 22.

[0093] At the same time, the bearing 22 installation section can include a fixing seat 301 and a second positioning groove 302. As the core component of the bearing 22 installation section, the fixing seat 301 is embedded inside the bearing 22 installation section to ensure the accurate and stable installation of the bearing 22. The second positioning groove 302 can be arranged at one end of the bearing 22 installation section close to the third groove 40, providing a reliable basis for the positioning of the fixing seat 301. Refer to Figure 8 , a positioning boss 3012 can be arranged above the fixing seat 301. The settings of the second positioning groove 302 and the positioning boss 3012 further improve the installation accuracy and reliability. A liquid channel relief groove 3011 can also be arranged below the mounting seat, effectively preventing the liquid from interfering with the bearing 22 installation section and providing a channel for the smooth flow of the liquid, so as to ensure the normal operation of the whole structure.

[0094] At the other end of the insertion part 6, a bone removal device is also provided. The bone removal device may include a flat file assembly 8. The flat file assembly 8 may include a second connecting pipe 81, a file head bending section 82, and a bone removal file head. One end of the file head bending section 82 is connected to the bone removal file head to ensure flexibility during use. The diameter of the bone removal file head is carefully considered and can be preferably 3 mm - 10 mm to meet different surgical requirements. Moreover, the bone removal file head can be flexibly installed in the third groove 40, improving the convenience of use. The other end of the file head bending section 82 is connected to one end of the second connecting pipe 81, and the other end of the second connecting pipe 81 is connected to the drive shaft 734. The file head bending section 82 is connected to the drive shaft 734 through the second connecting pipe 81. This connection method can be achieved in various ways, such as crimping at both ends, threaded connection, welding, or glue bonding, etc., so as to meet the requirements in different application scenarios. The flat file assembly 8 not only has excellent performance and stability but also can adapt to various complex surgical operations, providing great convenience for doctors.

[0095] Working principle: During the surgical process, the rotating motor drives the motor front fork 42 to rotate, and then drives the spatial cam 41 to start rotating. As the spatial cam 41 continues to rotate, the groove of the spatial cam 41 drives the abutting pin 21132 to move accordingly, thereby realizing the reciprocating motion mechanism of the inner sliding ring 2113. It should be noted that when the abutting pin 21132 is at the highest point position of the spatial cam 41, the spring 2111 uses its inherent elastic potential energy to apply an upward force to the inner sliding ring 2113 to ensure that the abutting pin 21132 is always located in the groove of the spatial cam 41 when passing through the installation groove 4111.

[0096] Next, the doctor precisely inserts the file head part of the bone removal file head into the required surgical site and uses the bone removal file head of the flat file assembly 8 to perform the bone removal operation. According to the surgical requirements, the doctor timely opens the waterway connecting pipe 5, enabling the liquid to smoothly enter through the waterway connecting pipe 5, pass through the water inlet channel 9 through the fine gaps of the support structure 10, and continuously flow towards the distal end of the module installation groove 3. Subsequently, in the outer tube 71 within the insertion part 6, these liquids flow smoothly along the carefully designed liquid channel boss 731 and finally flow out through the liquid channel relief groove 3011. These liquids flow in the preset path, effectively cooling the working area. Finally, the liquids are smoothly discharged through the liquid channel relief groove 3011, ensuring the clarity of the surgical field and the controllability of the system temperature.

[0097] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0098] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reciprocating bone removal device, characterized in that: include: A handle, wherein the handle is provided with a module installation slot for installing a driving module and a water connection pipe for filling water; A support structure, wherein the support structure is disposed in the handle and connected to one end of the drive module; a fluid channel gap is disposed at one end of the support structure close to the drive module for fluid to pass through; An insertion portion, one end of which is connected to the handle; A flat file assembly, the other end of the insertion portion being connected to the flat file assembly; A water inlet channel passes through the fluid channel gap of the support structure, the far end of the module mounting groove, the interior of the insertion portion and the flat file assembly, and is used for circulating cooling liquid.

2. A reciprocating bone removal device according to claim 1, characterized in that: The driving module comprises an outer fixed ring, a bearing, and an elastic sealing ring; One end of the outer solid ring is connected to the supporting structure, and the other end of the outer solid ring is connected to the bearing. An elastic sealing ring is arranged between the end of the outer solid ring away from the supporting structure and the bearing, and an elastic boss is arranged on the elastic sealing ring.

3. A reciprocating bone removal device according to claim 2, characterized in that: An inner sliding assembly is arranged inside the outer fixed ring, and a second positioning pin is arranged on the side of the outer fixed ring.

4. A reciprocating bone removal device according to claim 3, characterized in that: The inner sliding assembly includes a spring, an inner sliding ring and a connecting tube. A resistance pin is provided on the end of the inner sliding ring close to the bearing. The end of the inner sliding ring away from the resistance pin is connected to the connecting tube. The spring is sleeved on the end of the connecting tube close to the inner sliding ring and connected to the inner sliding ring for stabilizing the reciprocating motion of the inner sliding ring. A first positioning groove is provided on the side of the inner sliding ring for cooperating with the second positioning pin on the side of the outer fixed ring to complete positioning.

5. A reciprocating bone removal device according to claim 4, characterized in that: The motion component includes a motor front fork and a space cam, wherein the motor front fork is connected to one end of the space cam, and the other end of the space cam is connected to the interference pin, so as to complete the reciprocating motion of the inner sliding ring. A space cam groove is provided on the space cam, and a mounting groove is provided near the high point of the space cam groove, and the mounting groove is in contact with the interference pin to give the interference pin interference pressure.

6. A reciprocating bone removal device according to claim 1, characterized in that: A multi-layer tube device is also provided in the insertion part, and the multi-layer tube device includes an outer tube, a middle tube and an inner tube. The inner tube is located inside the outer tube, and the middle tube is located between the inner tube and the outer tube. The first positioning pin is provided at one end of the middle tube for fixing the connection between the outer tube and the middle tube. A fixing plate is also provided on the middle tube for fixing the connection between the inner tube and the middle tube.

7. A reciprocating bone removal device according to claim 6, characterized in that: A first connecting tube is provided at one end of the outer tube away from the first positioning pin, one end of the first connecting tube is connected to the middle tube, and a third groove and a bearing mounting section are provided at the other end of the first connecting tube, and the third groove is connected to the bearing mounting section.

8. A reciprocating bone removal device according to claim 6, characterized in that: A drive shaft is also arranged in the inner tube; The flat file assembly includes a second connecting tube, a file head curved section and a bone removal file head, one end of the file head curved section is connected to the bone removal file head, the other end of the file head curved section is connected to one end of the second connecting tube, and the other end of the second connecting tube is connected to the driving shaft.

9. A reciprocating bone removal device according to claim 7, characterized in that: The bearing mounting section includes a fixed seat and a second positioning groove, the fixed seat is located in the bearing mounting section, the second positioning groove is arranged at one end of the bearing mounting section close to the third groove, a positioning boss is arranged on the side of the fixed seat close to the second positioning groove, a liquid channel yield groove is also arranged on the side of the fixed seat close to the second positioning groove, and the positioning boss is connected to the second positioning groove.

10. A reciprocating bone removal device according to claim 6, characterized in that: A liquid channel boss is also provided along the length direction of the inner tube, and the liquid channel boss is adjacent to the outer surface of the inner tube. In contact with each other, a first groove and a second groove which are staggered with each other are also arranged along the horizontal direction of the inner tube, Used to ensure contact between the liquid and the drive shaft.

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