Disposable grinding head with cooling function

Abstract

The utility model relates to a disposable grinding head with a cooling function, and belongs to the field of medical instruments. The grinding machine comprises a driving motor and is structurally characterized by further comprising a handle assembly, a grinding head assembly and a transmission assembly, the handle assembly comprises a handle body, a handle front seat, a handle rear seat and a heat conduction inner core, the handle front seat and the handle rear seat are installed at the two ends of the handle body respectively, and the heat conduction inner core is installed in the handle body. A handle cooling channel is formed between the outer wall of the heat conduction inner core and the inner wall of the handle body, the driving motor is installed in the heat conduction inner core, the grinding head assembly is installed on the handle front base and connected with a motor shaft of the driving motor through a transmission assembly, and the handle body is provided with a water inlet connector. A connecting joint is arranged on the handle front seat, the water inlet joint is communicated with the handle cooling channel, and the handle cooling channel is communicated with the connecting joint.

Description

TECHNICAL FIELD

[0001] The utility model relates to a disposable grinding head with cooling function belongs to the field of medical instruments. BACKGROUND

[0002] In the surgical operation of orthopedics, the surgical position of the bone is often ground by the grinding head, and the motor electric grinding head needs to be rotated for operation. The motor will heat up after working for a period of time. The current grinding head device does not have the function of cooling the motor, which reduces the service life of the motor. In addition, most of the grinding heads cannot be replaced, and need to be sterilized before use after use. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming the above -mentioned insufficient in the prior art, and provides a disposable grinding head with cooling function with reasonable structure design.

[0004] The utility model discloses a disposable grinding head with cooling function adopts the technical scheme of solving the above -mentioned problem: this disposable grinding head with cooling function, including drive motor, its structure characteristics at: still including handle assembly, grinding head subassembly and transmission assembly, handle assembly includes handle main part, handle front seat, handle rear seat and heat conduction inner core, handle front seat and handle rear seat are installed at both ends of handle main part respectively, the heat conduction inner core is installed in handle main part, and handle cooling channel is formed between the outer wall of heat conduction inner core and the inner wall of handle main part, drive motor is installed in heat conduction inner core, grinding head subassembly is installed on handle front seat, and grinding head subassembly is connected through transmission assembly with the motor shaft of drive motor.

[0005] Further, the handle main part is provided with a water inlet connector, the handle front seat is provided with a connecting connector, the water inlet connector is communicated with the handle cooling channel, and the handle cooling channel is communicated with the connecting connector.

[0006] Further, the grinding head subassembly is installed on the handle front seat through a lock catch, a lock catch cavity is arranged in the lock catch, a lock catch spring is arranged in the lock catch cavity, and the two ends of the lock catch spring are respectively abutted with the lock catch cavity and the handle front seat.

[0007] Further, the grinding head subassembly includes a grinding head outer seat, a grinding head inner seat, a grinding head outer sleeve, a cooling pipe, a grinding head inner rod and a connecting rod, the grinding head outer sleeve is connected with the grinding head outer seat, the cooling pipe is connected with the grinding head inner seat, the grinding head inner rod is connected with the connecting rod, the grinding head inner seat is arranged in the grinding head outer seat, the grinding head inner rod is arranged in the cooling pipe, and the cooling pipe is arranged in the grinding head outer sleeve, a grinding head cooling channel is formed between the outer wall of the grinding head inner seat and the inner wall of the grinding head outer seat, and between the outer wall of the cooling pipe and the inner wall of the grinding head outer sleeve.

[0008] Further, the outer seat of the grinding head is provided with a water outlet joint, which is communicated with the grinding head cooling channel, and the grinding head cooling channel is communicated with the connecting joint.

[0009] Further, the transmission assembly comprises a transmission shaft, a transmission pin, a transmission sleeve, a lock ring, a skeleton oil seal, a transmission bearing and a transmission spring, the skeleton oil seal is arranged between the transmission shaft and the handle body, the transmission bearing is arranged between the transmission sleeve and the handle body, the transmission sleeve is connected with the motor shaft of the driving motor through the lock ring, the transmission shaft is arranged on the transmission sleeve through the transmission pin, the transmission pin is located in the transmission pin sliding groove arranged on the transmission sleeve, and the transmission spring is located in the transmission sleeve, and the two ends of the transmission spring are respectively abutted with the transmission shaft and the motor shaft of the driving motor.

[0010] Further, the transmission shaft is inserted with the connecting rod.

[0011] Further, a circular truncated cone structure is arranged on the transmission shaft, and the circular truncated cone structure is matched with the skeleton oil seal.

[0012] Further, the outer wall of the heat-conducting inner core is provided with a supporting ring, and the supporting ring is provided with an opening for the flow of cooling water.

[0013] Further, the outer wall of the inner seat of the grinding head and the outer wall of the cooling pipe are provided with grooves for the flow of cooling water.

[0014] Compared with the prior art, the utility model has the advantages that: the handle cooling channel arranged between the handle body and the heat-conducting inner core can cool the motor in the heat-conducting inner core, so that the motor does not overheat during operation and the service life is affected, the grinding head cooling channel arranged between the outer wall of the inner seat of the grinding head and the inner wall of the outer seat of the grinding head and between the outer wall of the cooling pipe and the inner wall of the outer sleeve of the grinding head can cool the inner rod of the grinding head, so that the normal operation of the operation can be ensured, the skeleton oil seal arranged on the transmission shaft sleeve can realize sealing when the handle assembly is not installed with the grinding head assembly, so that water cannot enter, and the handle assembly can be subjected to high-temperature and high-pressure disinfection, and the grinding head assembly is a disposable product which can be replaced after use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the three-dimensional structure schematic diagram of the disposable grinding head with the cooling function of the utility model embodiment.

[0016] Figure 2 is the cross-sectional structure schematic diagram of the disposable grinding head with the cooling function of the utility model embodiment.

[0017] Figure 3 is the cross-sectional structure schematic diagram of the disposable grinding head (without the grinding head assembly) with the cooling function of the utility model embodiment.

[0018] Figure 4 is a three-dimensional structure schematic diagram of the heat conduction inner core of the embodiment of the utility model.

[0019] Figure 5 is a three-dimensional structure schematic diagram of the grinding head inner seat of the embodiment of the utility model.

[0020] Figure 6 is a three-dimensional structure schematic diagram of the cooling pipe of the embodiment of the utility model.

[0021] In the drawing: handle assembly 1, grinding head assembly 2, driving motor 3, transmission assembly 4,

[0022] Handle main body 11, handle front seat 12, handle rear seat 13, heat conduction inner core 14, water inlet joint 15, connecting joint 16, lock catch 17, lock catch cavity 18, support ring 19, valve 190, opening 191,

[0023] Grinding head outer seat 21, grinding head inner seat 22, grinding head outer sleeve 23, cooling pipe 24, grinding head inner rod 25, connecting rod 26, water outlet joint 27, slotted 28

[0024] Transmission shaft 41, transmission pin 42, transmission sleeve 43, lock ring 44, skeleton oil seal 45, transmission bearing 46, circular table structure 47. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings and through the embodiment, the following embodiment is the explanation of the utility model and the utility model is not limited to the following embodiment.

[0026] EMBODIMENT

[0027] Referring to Figures 1 to 6 The structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by the person skilled in the art, and are not used to limit the limiting conditions that the utility model can be implemented, so they do not have the substantial meaning of technology, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect that the utility model can produce and the purpose that the utility model can achieve, it should still fall within the scope that the technical content disclosed by the utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "intermediate" and "one" in the specification are only for the convenience of clear understanding of the description, and are not used to limit the scope that the utility model can be implemented, the change or adjustment of relative relationship, without substantially changing the technical content, is also regarded as the scope that the utility model can be implemented.

[0028] The disposable grinding head with cooling function in the embodiment comprises a handle assembly 1, a grinding head assembly 2, a driving motor 3 and a transmission assembly 4. The handle assembly 1 comprises a handle main body 11, a handle front seat 12, a handle rear seat 13 and a heat-conducting inner core 14. The handle front seat 12 and the handle rear seat 13 are respectively installed at two ends of the handle main body 11. The heat-conducting inner core 14 is installed in the handle main body 11 and a handle cooling channel is formed between the outer wall of the heat-conducting inner core 14 and the inner wall of the handle main body 11. The driving motor 3 is installed in the heat-conducting inner core 14. The grinding head assembly 2 is installed on the handle front seat 12 and connected with the motor shaft of the driving motor 3 through the transmission assembly 4.

[0029] The handle main body 11 is provided with a water inlet joint 15 and the handle front seat 12 is provided with a connecting joint 16. The water inlet joint 15 is communicated with the handle cooling channel and the handle cooling channel is communicated with the connecting joint 16. The grinding head assembly 2 is installed on the handle front seat 12 through a lock catch 17. The lock catch 17 is provided with a lock catch cavity 18 and a lock catch spring is arranged in the lock catch cavity 18. The two ends of the lock catch spring are respectively abutted with the lock catch cavity 18 and the handle front seat 12.

[0030] The grinding head assembly 2 comprises a grinding head outer seat 21, a grinding head inner seat 22, a grinding head outer sleeve 23, a cooling pipe 24, a grinding head inner rod 25 and a connecting rod 26. The grinding head outer sleeve 23 is connected with the grinding head outer seat 21. The cooling pipe 24 is connected with the grinding head inner seat 22. The grinding head inner rod 25 is connected with the connecting rod 26. The grinding head inner seat 22 is arranged in the grinding head outer seat 21. The grinding head inner rod 25 is arranged in the cooling pipe 24. The cooling pipe 24 is arranged in the grinding head outer sleeve 23. A grinding head cooling channel is formed between the outer wall of the grinding head inner seat 22 and the inner wall of the grinding head outer seat 21 and between the outer wall of the cooling pipe 24 and the inner wall of the grinding head outer sleeve 23. A water outlet joint 27 is arranged on the grinding head outer seat 21. The water outlet joint 27 is communicated with the grinding head cooling channel. The grinding head cooling channel is communicated with the connecting joint 16. The outer walls of the grinding head inner seat 22 and the cooling pipe 24 are both provided with grooves 28 for cooling water flow.

[0031] The transmission assembly 4 in the embodiment includes a transmission shaft 41, a transmission pin 42, a transmission sleeve 43, a lock ring 44, a skeleton oil seal 45, a transmission bearing 46 and a transmission spring. The skeleton oil seal 45 is arranged between the transmission shaft 41 and the handle body 11, the transmission bearing 46 is arranged between the transmission sleeve 43 and the handle body 11, the transmission sleeve 43 is connected with the motor shaft of the driving motor 3 through the lock ring 44, the transmission shaft 41 is arranged on the transmission sleeve 43 through the transmission pin 42, the transmission pin 42 is located in the transmission pin sliding groove arranged on the transmission sleeve 43, the transmission spring is located in the transmission sleeve 43, and the two ends of the transmission spring are respectively in abutment with the transmission shaft 41 and the motor shaft of the driving motor 3. The transmission shaft 41 is inserted with the connecting rod 26, the circular truncated cone structure 47 is arranged on the transmission shaft 41, the circular truncated cone structure 47 cooperates with the skeleton oil seal 45, and the outer wall of the heat-conducting inner core 14 is provided with a support ring 19, and the support ring 19 is provided with an opening 191 for the flow of cooling water.

[0032] Specifically, the disposable grinding head with a cooling function can be installed on the handle assembly 1 through the lock buckle 17 to fix the grinding head outer seat 21. After the handle assembly 1 is installed, the flat groove of the connecting rod 26 can be inserted into the flat head of the transmission shaft 41, the transmission shaft 41 can be pushed to move towards the driving motor 3 to compress the transmission spring, the transmission pin 42 can move in the transmission pin sliding groove, and the circular truncated cone structure 47 can be separated from the skeleton oil seal 45. After the grinding head assembly 2 is installed, the driving motor 3 drives the transmission sleeve 43 and the lock ring 44 to rotate, the transmission sleeve 43 drives the transmission shaft 41 and the transmission pin 42 to rotate, and the transmission shaft 41 drives the grinding head inner rod 25 to rotate. During work, cooling water can flow into the handle cooling channel through the water inlet connector 15 to cool the driving motor 3, the valve 190 can control the water flow, and the cooling water continues to flow through the water outlet connector 27 to divide into two parts, one part enters the grinding head cooling channel, and the other part flows out of the water outlet connector 27, so that the grinding head inner rod 25 can be cooled.

[0033] After work is completed, the lock buckle 17 can be pressed to separate the lock buckle 17 from the grinding head outer seat 21, and the grinding head assembly 2 and the handle assembly 1 are classified. At this time, the transmission shaft 41 can be popped out under the action of the transmission spring, the circular truncated cone structure 47 arranged on the transmission shaft 41 is just matched with the taper surface of the skeleton oil seal 45, and the skeleton oil seal 45 can play a sealing role. Therefore, the handle assembly 1 can be subjected to high-temperature and high-pressure disinfection.

[0034] Furthermore, it needs to explain, the specific embodiment described in this specification, the shape of zero, component, the name taken etc. can be different, the above-mentioned in this specification is merely an example of the structure of the utility model is made. The equivalent change or simple change made according to the structure, features and principles described in the utility model patent concept, all are included in the protection scope of the utility model patent. The person skilled in the art to which the utility model belongs can make various modifications or supplements or adopt similar ways to replace the specific embodiments described, as long as it does not deviate from the structure of the utility model or beyond the range defined in the claims, it should belong to the protection scope of the utility model.

Claims

1. A disposable grinding head with a cooling function, comprising a drive motor (3), characterized in that: It also includes a handle assembly (1), a grinding head assembly (2) and a transmission assembly (4). The handle assembly (1) includes a handle body (11), a handle front seat (12), a handle rear seat (13) and a heat-conducting inner core (14). The handle front seat (12) and the handle rear seat (13) are respectively installed at both ends of the handle body (11). The heat-conducting inner core (14) is installed inside the handle body (11) and a handle cooling channel is formed between the outer wall of the heat-conducting inner core (14) and the inner wall of the handle body (11). The drive motor (3) is installed inside the heat-conducting inner core (14). The grinding head assembly (2) is installed on the handle front seat (12), and the motor shaft of the grinding head assembly (2) and the drive motor (3) are connected through the transmission assembly (4).

2. The disposable grinding head with cooling function according to claim 1, characterized in that: The handle body (11) is provided with a water inlet connector (15), and the handle front seat (12) is provided with a connecting connector (16). The water inlet connector (15) is connected to the handle cooling channel, and the handle cooling channel is connected to the connecting connector (16).

3. The disposable grinding head with cooling function according to claim 1, characterized in that: The grinding head assembly (2) is mounted on the handle front seat (12) via a latch (17). The latch (17) has a latch cavity (18) and a latch spring. The two ends of the latch spring abut against the latch cavity (18) and the handle front seat (12) respectively.

4. The disposable grinding head with cooling function according to claim 1, characterized in that: The grinding head assembly (2) includes a grinding head outer seat (21), a grinding head inner seat (22), a grinding head outer sleeve (23), a cooling pipe (24), a grinding head inner rod (25), and a connecting rod (26). The grinding head outer sleeve (23) is connected to the grinding head outer seat (21), the cooling pipe (24) is connected to the grinding head inner seat (22), and the grinding head inner rod (25) is connected to the connecting rod (26). The grinding head inner seat (22) is located inside the grinding head outer seat (21), the grinding head inner rod (25) is located inside the cooling pipe (24), and the cooling pipe (24) is located inside the grinding head outer sleeve (23). A grinding head cooling channel is formed between the outer wall of the grinding head inner seat (22) and the inner wall of the grinding head outer seat (21), and between the outer wall of the cooling pipe (24) and the inner wall of the grinding head outer sleeve (23).

5. The disposable grinding head with cooling function according to claim 4, characterized in that: The outer seat (21) of the grinding head is provided with a water outlet connector (27), which is connected to the cooling channel of the grinding head and the cooling channel of the grinding head is connected to the connecting connector (16).

6. The disposable grinding head with cooling function according to claim 1, characterized in that: The transmission assembly (4) includes a transmission shaft (41), a transmission pin (42), a transmission sleeve (43), a locking ring (44), a skeleton oil seal (45), a transmission bearing (46), and a transmission spring. A skeleton oil seal (45) is provided between the transmission shaft (41) and the handle body (11). A transmission bearing (46) is provided between the transmission sleeve (43) and the handle body (11). The transmission sleeve (43) is connected to the motor shaft of the drive motor (3) through the locking ring (44). The transmission shaft (41) is set on the transmission sleeve (43) through the transmission pin (42). A transmission pin groove is provided on the transmission sleeve (43). The transmission pin (42) is located in the transmission pin groove. The transmission spring is located in the transmission sleeve (43), and the two ends of the transmission spring abut against the transmission shaft (41) and the motor shaft of the drive motor (3), respectively.

7. The disposable grinding head with cooling function according to claim 6, characterized in that: The drive shaft (41) is inserted into the connecting rod (26).

8. The disposable grinding head with cooling function according to claim 6, characterized in that: The drive shaft (41) is provided with a frustum-shaped structure (47), which cooperates with the skeleton oil seal (45).

9. The disposable grinding head with cooling function according to claim 1, characterized in that: The outer wall of the heat-conducting inner core (14) is provided with a support ring (19), and the support ring (19) is provided with an opening (191) for the flow of cooling water.

10. The disposable grinding head with cooling function according to claim 4, characterized in that: The inner wall of the grinding head (22) and the outer wall of the cooling pipe (24) are both provided with slots (28) for the flow of cooling water.

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