A waterproof craniotomy saw

Abstract

This utility model relates to a waterproof craniotomy saw, belonging to the field of craniotomy tool technology. It includes: a saw body, a drive assembly, a heat-conducting structure, and a heat-dissipating structure. A sealed drive cavity is formed inside the saw body. The drive assembly and the heat-conducting structure are installed inside the drive cavity. The heat-conducting structure is made of heat-conducting material and is thermally connected to the drive assembly. The heat-dissipating structure installed outside the drive cavity is thermally connected to the heat-conducting structure. The heat-conducting structure can conduct the heat generated by the drive assembly to itself, while the heat-dissipating structure can accelerate the dissipation of heat in the heat-conducting structure. With the cooperation of the heat-conducting structure and the heat-dissipating structure, the heat generated by the drive assembly can be discharged to the outside of the drive cavity without the need for gas flow for heat dissipation. Thus, the drive cavity can be set in a sealed form, allowing the craniotomy saw to be directly washed with water or soaked for cleaning.

Description

Technical Field

[0001] This utility model relates to the field of craniotomy tools, specifically to a waterproof craniotomy saw. Background Technology

[0002] A craniotomy saw is an auxiliary craniotomy device used for cutting the skull and is widely used in neurosurgery. Due to its high operating speed and long operating time, the craniotomy saw generates a significant amount of heat during operation. To ensure proper functioning and prevent overheating, existing craniotomy saws are typically equipped with cooling fans or similar heat dissipation devices. These devices dissipate heat from the device's interior through airflow, thereby maintaining the device's temperature within a safe range.

[0003] However, this heat dissipation design has significant drawbacks. Due to the presence of the cooling fan, the internal structure of the craniotomy saw cannot be completely sealed, preventing direct washing or soaking. In practical use, cleaning and disinfection of the equipment are crucial; any residual blood, tissue, or other contaminants can become a breeding ground for bacteria, increasing the risk of postoperative infection. Therefore, existing craniotomy saws typically require complex disassembly and manual cleaning after each use. This not only increases the workload for operators but can also lead to wear or damage to equipment components, shortening the equipment's lifespan.

[0004] Therefore, there is an urgent need for a waterproof craniotomy saw that can be directly washed with water. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a waterproof craniotomy saw that dissipates heat through thermal conduction. This ensures the normal operation of the craniotomy saw while maintaining its internal drive structure and circuit components in a sealed working environment, thereby improving the waterproof performance of the craniotomy saw.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A waterproof craniotomy saw includes: a saw body, wherein a sealed drive cavity is formed inside the saw body;

[0008] A drive assembly, which is installed in the drive cavity, is capable of providing driving force to the working tool of the craniotomy saw;

[0009] A thermally conductive structure is installed inside the drive cavity. The thermally conductive structure is made of a thermally conductive material and is thermally connected to the drive assembly.

[0010] A heat dissipation structure is installed outside the drive cavity and is thermally connected to the heat-conducting structure. The heat dissipation structure can accelerate the heat dissipation of the heat-conducting structure.

[0011] Preferably, the drive assembly includes a drive motor and a control circuit. The drive motor is connected to an external power supply through the control circuit. The heat-conducting structure includes a motor mounting base and a circuit board mounting base. The drive motor is in contact with the motor mounting base, and the control circuit is in contact with the circuit board mounting base.

[0012] Preferably, the motor mounting base is a cylindrical structure, and the inner wall of the cylindrical structure is in contact with the outer wall of the drive motor.

[0013] Preferably, the cross-section of the drive cavity is rectangular, and the circuit board mounting base coincides with the diagonal of the rectangular structure.

[0014] Preferably, the heat dissipation structure includes a grille radiator, which includes a heat exchange plate and a heat dissipation plate. The heat exchange plate is thermally connected to the heat-conducting structure, and the heat dissipation plate is installed on the side of the heat exchange plate away from the heat-conducting structure. The heat dissipation plate can accelerate the dissipation of heat in the grille radiator.

[0015] Preferably, the saw body includes a tubular shell with openings at both ends. One end of the shell is provided with a sealing end cap, and the other end of the shell is sealed to the heat exchange plate. The heat exchange plate is in contact with the heat-conducting structure.

[0016] Preferably, the heat dissipation structure further includes a cooling fan, which is electrically connected to an external power supply. The cooling fan is installed inside the grille radiator and is oriented towards the heat dissipation plate.

[0017] Preferably, the device further includes a battery assembly, which is installed on the side of the heat dissipation structure away from the drive assembly. The side of the battery assembly near the heat dissipation structure has a connector slot, in which a power supply contact is provided. The side of the heat dissipation structure near the battery assembly has a connector plate that matches the connector slot. The connector plate is electrically connected to the drive assembly. The end of the connector plate near the battery assembly has a contact that matches the power supply contact, and the contact is electrically connected to the power supply contact.

[0018] Preferably, a connection knob is provided at the end of the battery assembly away from the heat dissipation structure, and a connection rod is provided on the connection knob. A mounting hole is provided through the battery assembly, and a connection hole is provided at the end of the plug-in plate near the battery assembly. The connection rod passes through the mounting hole and connects to the connection hole to lock the battery assembly to the side of the heat dissipation structure away from the drive component.

[0019] Preferably, the battery also includes a waterproof battery housing, the battery assembly is installed inside the waterproof battery housing, the waterproof battery housing has a first extension at one end near the heat dissipation structure, the first extension is annular and surrounds the edge of the end face of the waterproof battery housing, the heat dissipation structure has a second extension at one end near the battery assembly, the first extension and the second extension are inserted into each other and sealed together, and the waterproof battery housing is sealed at one end away from the heat dissipation structure.

[0020] The present invention achieves the following technical advantages over the prior art:

[0021] The waterproof craniotomy saw disclosed in this utility model is provided with a heat-conducting structure made of heat-conducting material. The drive component used to drive the working tool is thermally connected to the heat-conducting structure, and the heat-conducting structure is thermally connected to a heat dissipation structure located outside the drive cavity. The heat-conducting structure can conduct the heat generated by the drive component to itself, while the heat dissipation structure can accelerate the dissipation of heat in the heat-conducting structure. With the cooperation of the heat-conducting structure and the heat dissipation structure, the heat generated by the drive component can be discharged to the outside of the drive cavity without the need for gas flow to dissipate heat. This allows the drive cavity where the drive component is installed to be set in a sealed form, improving the sealing effect of the craniotomy saw and enabling the craniotomy saw to be directly washed with water or soaked for cleaning. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of one embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the heat-conducting structure in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram showing the cooperation between the heat-conducting structure and the heat-dissipating structure in one embodiment of the present invention;

[0027] Figure 5 This is a cross-sectional schematic diagram of a waterproof craniotomy saw in one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the heat dissipation structure in one embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of a battery assembly in one embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the plug-in board in one embodiment of the present invention.

[0031] The components include: 1. Working tool; 2. Heat-conducting structure; 3. Heat dissipation structure; 4. Drive motor; 5. Control circuit; 6. Motor mounting base; 7. Circuit board mounting base; 8. Heat exchange plate; 9. Heat sink; 10. Sealed end cap; 11. Housing; 12. Cooling fan; 13. Battery assembly; 14. Insertion slot; 15. Power supply contact; 16. Insertion plate; 17. Electrical contact; 18. Connecting rod; 19. Connecting knob; 20. Connecting hole; 21. Waterproof battery shell; 22. First extension; 23. Second extension; 24. Power switch; 25. Speed ​​adjustment knob; 26. Power indicator light; 27. Mounting hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The purpose of this invention is to provide a waterproof craniotomy saw. With the cooperation of a heat-conducting structure and a heat-dissipating structure, the heat generated by the drive component can be discharged to the outside of the drive cavity without the need for gas flow heat dissipation. This allows the drive cavity to be set in a sealed form, so that the craniotomy saw can be directly washed with water.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] refer to Figure 1-8The waterproof craniotomy saw disclosed in this embodiment includes: a saw body, a drive assembly, a heat-conducting structure 2, and a heat dissipation structure 3. The saw body has a sealed drive cavity, and the drive assembly is installed inside the drive cavity. The drive assembly provides driving force to the working blade 1 of the craniotomy saw. The heat-conducting structure 2 is also installed inside the drive cavity and is made of a heat-conducting material. The heat-conducting structure 2 is thermally connected to the drive assembly. When the temperature of the drive assembly rises due to continuous operation, the heat-conducting structure 2 can conduct the heat generated by the drive assembly to itself. The heat dissipation structure 3 is installed outside the drive cavity and is thermally connected to the heat-conducting structure 2. The heat dissipation structure 3 accelerates the dissipation of heat from the heat-conducting structure 2. Because the heat-conducting structure 2 has good thermal conductivity, the heat generated by the drive component can be quickly transferred to the outside of the drive cavity in combination with the heat dissipation structure 3. Therefore, there is no need for air convection between the inside and outside of the drive cavity to quickly conduct the heat generated by the drive component to the outside of the drive cavity. This allows the drive cavity to be set in a completely sealed form, which greatly improves the overall sealing performance of the craniotomy saw, allowing the craniotomy saw to be directly washed with water or soaked in cleaning solution.

[0036] Those skilled in the art will understand that a thermally conductive connection refers to the transfer of heat between two components through direct contact or an intermediate material.

[0037] In a preferred embodiment, the drive assembly includes a drive motor 4 and a control circuit 5. The drive motor 4 is connected to an external power supply via the control circuit 5, which controls the operating state of the drive motor 4. The heat-conducting structure 2 includes a motor mounting base 6 and a circuit board mounting base 7. The drive motor 4 is in contact with the motor mounting base 6, and the control circuit 5 is in contact with the circuit board mounting base 7. The control circuit 5 also generates heat during operation, and the heat-conducting structure 2 enables the control of the operating temperature of the control circuit 5.

[0038] In a preferred embodiment, the motor mounting base 6 has a cylindrical structure, with its inner wall in contact with the outer wall of the drive motor 4. The cylindrical design of the motor mounting base 6 effectively increases the contact area between the drive motor 4 and the motor mounting base 6, achieving the technical effect of accelerating heat transfer.

[0039] Preferably, the gap between the drive motor 4 and the motor mounting base 6 is filled with a thermally conductive material with excellent thermal conductivity to further improve the thermal conductivity.

[0040] In a preferred embodiment, the drive cavity has a rectangular cross-section, and the circuit board mounting base 7 coincides with the diagonal of the rectangular structure. Since the length of the diagonal of the rectangular structure is greater than the length of any one side, arranging the circuit board mounting base 7 to coincide with the diagonal of the rectangular structure increases the usable area of ​​the circuit board mounting base 7, thereby making the craniotomy saw structure more compact.

[0041] Preferably, both sides of the circuit board mounting base 7 can be used to mount the control circuit 5, thus avoiding the problem of mutual interference between the various structures in the control circuit 5.

[0042] Those skilled in the art will understand that the aforementioned cross section refers to the cross section obtained by cutting the drive cavity along the direction perpendicular to the extension of the saw blade.

[0043] In a preferred embodiment, the heat dissipation structure 3 includes a grille radiator, which comprises a heat exchange plate 8 and a heat dissipation plate 9. The heat exchange plate 8 is thermally connected to the heat conduction structure 2, and the heat dissipation plate 9 is installed on the side of the heat exchange plate 8 away from the heat conduction structure 2. The heat dissipation plate 9 can accelerate the dissipation of heat in the grille radiator. The arrangement of the heat dissipation plate 9 greatly increases the heat dissipation area of ​​the heat dissipation structure 3, achieving the technical effect of improving the heat dissipation efficiency of the drive cavity.

[0044] In a preferred embodiment, the saw body includes a tubular housing 11 with openings at both ends. A sealing end cap 10 is provided at one end of the housing 11, and the housing 11 is sealed to the sealing end cap 10. The other end of the housing 11 is sealed to a heat exchange plate 8, which is in contact with the heat-conducting structure 2. The housing 11, the heat exchange plate 8, and the sealing end cap 10 form a driving cavity, thus allowing the heat exchange plate 8 to directly contact the heat-conducting structure 2 within the driving cavity, achieving the technical effect of improving the heat exchange efficiency between the heat exchange plate 8 and the heat-conducting structure 2.

[0045] Preferably, the sealing end cap 10 has a working hole for the drive motor 4 to be connected to the working tool 1 for transmission, and the working hole is sealed.

[0046] In a preferred embodiment, the end of the housing 11 near the grid radiator is sealed by a heat-conducting plate with good thermal conductivity. The heat exchange plate 8 is thermally connected to the heat-conducting structure 2 through the heat-conducting plate. The heat exchange plate 8 and the heat-conducting plate are detachable, so that different specifications of grid radiators can be replaced to adapt the craniotomy saw to different working environments.

[0047] Preferably, the shell 11 has a cross-section that is circular, rectangular, or other similar in shape.

[0048] In a preferred embodiment, the heat dissipation structure 3 also includes a cooling fan 12, which is electrically connected to an external power supply. The cooling fan 12 is installed inside the grille radiator, and the airflow path of the cooling fan 12 corresponds to that of the heat dissipation plate 9, thereby further accelerating the diffusion of heat in the heat dissipation plate 9.

[0049] More preferably, the cooling fan 12 is made of plastic, which will not be corroded by cleaning fluid. Additionally, the power cord of the cooling fan 12 is wrapped with waterproof material, and the connection point between the power cord and the cooling fan 12 is waterproofed.

[0050] In a preferred embodiment, the waterproof craniotomy saw also includes a battery assembly 13. The battery assembly 13 is installed on the side of the heat dissipation structure 3 away from the drive assembly. A connector slot 14 is provided on the side of the battery assembly 13 closest to the heat dissipation structure 3, and a power supply contact 15 is provided in the connector slot 14. A connector plate 16 matching the connector slot 14 is provided on the side of the heat dissipation structure 3 closest to the battery assembly 13. The connector plate 16 is electrically connected to the drive assembly. A contact point 17 matching the power supply contact 15 is provided at the end of the connector plate 16 closest to the battery assembly 13. The contact point 17 and the power supply contact 15 are electrically connected through contact. When the battery assembly 13 is used as an external power source to power the drive assembly, the power supply contact 15 in the battery assembly 13 and the contact point 17 on the connector plate 16 are connected by a connector, enabling quick installation and removal of the battery assembly 13.

[0051] Preferably, the plug-in board 16 is electrically connected to the drive assembly via a waterproof wire. Specifically, one end of the waterproof wire is electrically connected to the plug-in board 16, and the other end of the waterproof wire is electrically connected to the control circuit 5 of the drive assembly to provide the energy required for the drive motor 4 to operate.

[0052] More preferably, the waterproof craniotomy saw is provided with a through hole for connecting the waterproof wire to the drive assembly and the plug plate 16, and the waterproof wire and the through hole are sealed and filled with waterproof adhesive.

[0053] In a preferred embodiment, when the cooling fan 12 is powered by the battery assembly 13 as an external power source, the cooling fan 12 is electrically connected to the battery assembly 13 via a waterproof wire. The cavity created when laying the waterproof wire is sealed and filled with waterproof adhesive to ensure the airtightness of the craniotomy saw.

[0054] In a preferred embodiment, a connection knob 19 is provided at the end of the battery assembly 13 away from the heat dissipation structure 3, and a connecting rod 18 is provided on the connection knob 19. A mounting hole 27 is provided in the battery assembly 13, and the size of the mounting hole 27 matches the size of the connecting rod 18 to ensure that the connecting rod 18 can be inserted into the mounting hole 27. A connection hole 20 is provided at the end of the plug plate 16 near the battery assembly 13, and the position of the connection hole 20 corresponds to that of the connecting rod 18. The connecting rod 18 passes through the mounting hole 27 and connects with the connection hole 20 to lock the battery assembly 13 to the side of the heat dissipation structure 3 away from the drive component.

[0055] Preferably, the connecting rod 18 and the connecting hole 20 are threaded together. The outer wall of the connecting rod 18 is provided with an external thread, and the inner wall of the connecting hole 20 is provided with an internal thread that matches the external thread.

[0056] Furthermore, the connecting rod 18 is fixedly connected to the connecting knob 19, and a slot is provided in the connecting hole 20. A retaining spring that matches the slot is provided on the outer wall of the connecting rod 18. The cooperation between the slot and the retaining spring ensures that the connecting rod 18 will not move along the axial direction of the connecting hole 20 while rotating in the connecting hole 20, so as to prevent the connecting rod 18 from being damaged by bumps.

[0057] In a preferred embodiment, the waterproof craniotomy saw also includes a battery waterproof housing 21. The battery assembly 13 is installed inside the battery waterproof housing 21. A first extension 22 is provided at the end of the battery waterproof housing 21 near the heat dissipation structure 3. The first extension 22 is annular and surrounds the edge of the end face of the battery waterproof housing 21. A second extension 23 is provided at the end of the heat dissipation structure 3 near the battery assembly 13. The first extension 22 and the second extension 23 are interlocked and sealed together. The end of the battery waterproof housing 21 away from the heat dissipation structure 3 is sealed. With the cooperation of the connecting knob 19 and the connecting rod 18, the end face of the battery waterproof housing 21 near the heat dissipation structure 3 can fit tightly against the end face of the heat dissipation structure 3 near the battery waterproof housing 21. Simultaneously, the first extension 22 and the second extension 23 are also sealed together, isolating the insertion slot 14 and the insertion plate 16 from the outside, thus preventing liquid from entering the insertion slot 14 during cleaning of the waterproof craniotomy saw.

[0058] Furthermore, a rubber sealing gasket is provided between the end face of the battery waterproof shell 21 near the heat dissipation structure 3 and the end face of the heat dissipation structure 3 near the battery waterproof shell 21 to improve the sealing performance of the craniotomy saw.

[0059] Preferably, one end of the connecting knob 19 protrudes outside the battery waterproof housing 21, and a sealing rubber gasket is installed between the connecting knob 19 and the battery assembly 13 to form a sealed connection between the two.

[0060] During operation, pressing the power switch 24 at the bottom of the battery assembly 13 starts the craniotomy saw. The speed of the craniotomy saw can be steplessly adjusted using the speed adjustment knob 25 on the saw body. The craniotomy saw performs bone sawing by reciprocating oscillation, and controlling the oscillation angle can avoid damage to soft tissues such as the periosteum. The saw body and battery assembly 13 as a whole can be immersed in liquid for cleaning and disinfection, or the saw body can be immersed in liquid for cleaning and disinfection separately.

[0061] Preferably, the waterproof craniotomy saw is equipped with a power indicator light 26.

[0062] As a preferred embodiment, sealing gaskets can be installed in the gaps between the various structures on the craniotomy saw to improve its sealing effect.

[0063] Preferably, this waterproof craniotomy saw can be used in forensic autopsies or medical fields, depending on the actual needs of the application.

[0064] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0065] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A waterproof craniotomy saw, characterized in that, include: The saw body has a sealed drive cavity inside; A drive assembly is installed in the drive cavity and is capable of providing driving force to the working tool (1) of the craniotomy saw; A heat-conducting structure (2) is installed inside the drive cavity. The heat-conducting structure (2) is made of a heat-conducting material and is thermally connected to the drive assembly. The heat dissipation structure (3) is installed outside the drive cavity and is thermally connected to the heat conduction structure (2). The heat dissipation structure (3) can accelerate the heat dissipation of the heat conduction structure (2).

2. The water-jet craniotomy saw of claim 1, wherein, The drive assembly includes a drive motor (4) and a control circuit (5). The drive motor (4) is connected to an external power supply through the control circuit (5). The heat-conducting structure (2) includes a motor mounting base (6) and a circuit board mounting base (7). The drive motor (4) is in contact with the motor mounting base (6), and the control circuit (5) is in contact with the circuit board mounting base (7).

3. The water-jet craniotomy saw of claim 2, wherein, The motor mounting base (6) is a cylindrical structure, and the inner wall of the cylindrical structure is in contact with the outer wall of the drive motor (4).

4. The water-jet craniotomy saw of claim 2, wherein, The cross-section of the drive cavity is rectangular, and the circuit board mounting base (7) coincides with the diagonal of the rectangular structure.

5. The water-jet craniotomy saw of claim 1, wherein, The heat dissipation structure (3) includes a grid radiator, which includes a heat exchange plate (8) and a heat dissipation plate (9). The heat exchange plate (8) is thermally connected to the heat conduction structure (2). The heat dissipation plate (9) is installed on the side of the heat exchange plate (8) away from the heat conduction structure (2). The heat dissipation plate (9) can accelerate the dissipation of heat in the grid radiator.

6. The water-jet craniotomy saw of claim 5, wherein, The saw body includes a tubular shell (11) with openings at both ends. One end of the shell (11) is provided with a sealing end cap (10), and the other end of the shell (11) is sealed to the heat exchange plate (8). The heat exchange plate (8) is in contact with the heat-conducting structure (2).

7. The water-jet craniotomy saw of claim 5, wherein, The heat dissipation structure (3) also includes a cooling fan (12), which is electrically connected to an external power supply. The cooling fan (12) is installed inside the grille radiator and is positioned facing the heat dissipation plate (9).

8. The water-jet craniotomy saw of claim 1, wherein, It also includes a battery assembly (13), which is installed on the side of the heat dissipation structure (3) away from the drive assembly. The battery assembly (13) has a plug slot (14) on the side near the heat dissipation structure (3). A power supply contact (15) is provided in the plug slot (14). The heat dissipation structure (3) has a plug plate (16) that matches the plug slot (14) on the side near the battery assembly (13). The plug plate (16) is electrically connected to the drive assembly. A power connection contact (17) that matches the power supply contact (15) is provided at one end of the plug plate (16) near the battery assembly (13). The power connection contact (17) is electrically connected to the power supply contact (15).

9. The water-jet craniotomy saw of claim 8, wherein, A connection knob (19) is provided at one end of the battery assembly (13) away from the heat dissipation structure (3). A connecting rod (18) is provided on the connection knob (19). A mounting hole (27) is provided in the battery assembly (13) through the battery assembly (13). A connection hole (20) is provided at one end of the plug plate (16) near the battery assembly (13). The connecting rod (18) passes through the mounting hole (27) and connects to the connection hole (20) to lock the battery assembly (13) to the side of the heat dissipation structure (3) away from the drive component.

10. The water-jet craniotomy saw of claim 8, wherein, It also includes a battery waterproof housing (21), the battery assembly (13) is installed inside the battery waterproof housing (21), the battery waterproof housing (21) is provided with a first extension (22) at one end near the heat dissipation structure (3), the first extension (22) is annular and surrounds the edge of the end face of the battery waterproof housing (21), the heat dissipation structure (3) is provided with a second extension (23) at one end near the battery assembly (13), the first extension (22) and the second extension (23) are inserted into each other and sealed together, and the battery waterproof housing (21) is sealed away from the heat dissipation structure (3).

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