A water cooling device for an otologic bur

Abstract

The utility model discloses an ear department's flush cooling device of drill, including chuck, the end wall of chuck one end is installed with hollow ring -like casing, the inside between hollow ring -like casing and chuck is provided with inner cutter bar and outer cutter bar, one end of inner cutter bar is provided with inner cutter bar handle, one end of outer cutter bar is provided with outer cutter bar tail, the other end of outer cutter bar tail is provided with the inside of inner cutter bar handle, the other end of inner cutter bar is in proper order and is passed through the inside of outer cutter bar tail and outer cutter bar and is extended to outside and is connected with drill head, the inside of inner cutter bar is provided with first liquid flow cavity, the second liquid flow cavity is provided between the circumferential inner wall of outer cutter bar and the circumferential outer wall of inner cutter bar one end. The utility model has adopted the technology of coolant circulation, can effectively take away the heat that inner cutter bar and outer cutter bar produced when high -speed operation, avoided the heat loss risk, guarantee the continuous stable operation.

Description

Technical Field

[0001] This utility model relates to the field of otological drilling technology, specifically to a water flushing and cooling device for otological drilling. Background Technology

[0002] In microsurgical otology, a medical drill is used to grind away diseased bone tissue in the middle and inner ear. A typical medical drill includes a drill head, an inner blade connected to the drill head, and an outer blade that supports the inner blade. During surgery, the drill is connected to a power handle, which provides the grinding motion. To ensure the safety of the surgery, the drill is usually required to generate little heat. This is because the inside of the ear is densely packed with nerves and has complex and winding cavities. If the drill generates a lot of heat during operation, it may cause thermal damage to sensitive nerves and tissues.

[0003] A search revealed that patent publication number CN221105934U discloses an ear drill, belonging to the field of medical device technology, to solve the problems of excessive frictional heat and instability caused by the rotation of the blade in existing drills. It includes a drill assembly comprising an inner blade, with a drill bit connected to its front end and an inner blade handle connected to its end; an outer blade is sleeved around the inner blade, with a protective wire wrapped around its exterior; an outer blade tail is formed at the end of the outer blade, which is embedded in the inner blade handle; and a handheld component, with the ends of both the inner and outer blades extending into and connected to the handheld component. This novel ear drill is better suited for intra-ear canal surgery, offering a high safety factor, stable operation, and minimal vibration.

[0004] In practical use, the above-mentioned technical solutions utilize a protective wire wrapped around the outer blade as a buffer against the heat generated by the rotational friction of the inner blade, reducing the risk of thermal damage. A protective sleeve on the bent section of the inner blade prevents direct collision and friction between the inner and outer blades, preventing the generation of excessive frictional heat. This also serves as a buffer against the heat generated by the rotational friction of the inner blade, further reducing the risk of thermal damage. However, the cooling methods described above cannot effectively cope with the large amount of heat generated by the high-speed drill, still posing a risk of thermal damage. Furthermore, bone fragments, tissue debris, and other debris generated during the drilling process adhere to the drill bit, requiring frequent cleaning with external equipment, which affects surgical efficiency. Therefore, a water-cooling device for otological drills is designed. Utility Model Content

[0005] In view of the defects or shortcomings of existing ear drills, the purpose of this utility model is to provide a water cooling device for ear drills. It adopts coolant circulation technology, which can effectively remove the heat generated by the inner and outer blades during high-speed operation, avoid the risk of heat loss, and ensure the continuous and stable operation of the surgery.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This utility model provides a water cooling device for an ear drill, including a chuck. A hollow annular shell is installed on the end wall of one end of the chuck. An inner cutter bar and an outer cutter bar are arranged on the inner side between the hollow annular shell and the chuck. An inner cutter bar handle is provided at one end of the inner cutter bar, and an outer cutter bar tail is provided at one end of the outer cutter bar. The other end of the outer cutter bar tail is located inside the inner cutter bar handle. The other end of the inner cutter bar passes through the interior of the outer cutter bar tail and the outer cutter bar in sequence and extends to the outside to connect with the drill bit. The inner blade has a first liquid flow cavity, and the outer blade has a second liquid flow cavity between its inner circumferential wall and the outer circumferential wall at one end. The outer circumferential wall at one end of the inner blade has a drain hole, and the outer circumferential wall of the inner blade has a first inlet pipe. The other end of the first inlet pipe passes through the tail of the outer blade and the outer wall of the chuck and extends to the outside. The outer circumferential wall of the outer blade has an outlet pipe, and the other end of the outlet pipe passes through the outer wall of the chuck and extends to the outside. The hollow annular shell has a drain pipe arranged in a ring array on one end wall, and a second inlet pipe is provided on the circumferential outer wall of the hollow annular shell.

[0007] Preferably, a sealing ring is provided at the connection between the first inlet pipe and the clamp, and the other end of the first inlet pipe is connected to the circulating liquid input pipe through a pipe joint, and the first inlet pipe is connected to the first liquid flow cavity.

[0008] Preferably, a sealing ring is provided at the connection between the liquid outlet pipe and the connector, the other end of the liquid outlet pipe is connected to the circulating liquid output pipe through a pipe connector, and the liquid outlet pipe is connected to the second liquid flow cavity.

[0009] Preferably, the interior of the second inlet pipe is connected to the interior of the hollow annular shell, the other end of the second inlet pipe is connected to the liquid input pipe through a pipe fitting, and the interior of the drain pipe is connected to the interior of the hollow annular shell.

[0010] Preferably, a sealing sleeve is provided between the circumferential outer wall of the other end of the inner tool bar and the circumferential inner wall of the other end of the outer tool bar.

[0011] Preferably, an anti-slip spring is provided between the circumferential inner wall of one end of the chuck and the outer tool bar, and a sealing assembly is provided at the connection between the interior of one end of the chuck and the outer tool bar. The sealing assembly is composed of a waterproof ring and an O-ring. Notches distributed in a ring array are provided on the circumferential outer wall of the other end of the chuck.

[0012] Preferably, spiral grooves are provided on the circumferential inner walls of both the first liquid flow cavity and the second liquid flow cavity.

[0013] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: In this invention, through a series of coordinated structural arrangements, the coolant in the external circulating cooling structure is transported from the first inlet pipe to the first liquid flow cavity. The coolant in the first liquid flow cavity flows from the drain hole to the second liquid flow cavity. The coolant in the second liquid flow cavity is discharged from the outlet pipe and transported back to the circulating cooling structure, thus realizing the circulation of coolant in the first and second liquid flow cavities. Therefore, this invention adopts coolant circulation technology, which can effectively remove the heat generated by the inner and outer blade rods during high-speed operation, ensuring that the inner and outer blade rods are always at a suitable working temperature. This greatly reduces the wear of the inner or outer blade rods caused by overheating, extends the service life of the inner and outer blade rods, avoids the risk of heat loss, and ensures the continuous and stable operation of the surgery.

[0014] In this invention, through the design of a hollow annular shell and a drain pipe, the cleaning fluid in the external cleaning structure is transported from the second inlet pipe to the cavity inside the hollow annular shell. The cleaning fluid in the cavity inside the hollow annular shell is then transported to the drain pipe and discharged. The cleaning fluid discharged from the drain pipe is sprayed onto the drill bit to rinse it. The operator can rinse the drill bit as soon as it is removed from the ear, eliminating the need for frequent rinsing of the drill bit through external cleaning equipment. This avoids the situation where frequent rinsing of the drill bit through external cleaning equipment would affect surgical efficiency and reduce the success rate. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 2 .

[0018] Figure 3 This is a cross-sectional view of the present invention.

[0019] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0020] In the picture: 100. Inner tool holder; 110. Inner tool holder shank; 120. First liquid flow cavity; 130. First liquid inlet pipe; 140. Drill bit; 150. Drain hole; 200. Hollow annular shell; 210. Second liquid inlet pipe; 220. Liquid outlet pipe; 300. Clamp; 400, outer blade; 410, liquid outlet pipe; 420, second liquid flow cavity; 430, outer blade tail; 500, sealing sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] like Figure 1-4 As shown, a water-cooling device for an ear drill includes a chuck 300. A hollow annular shell 200 is installed on the end wall of one end of the chuck 300. An inner cutter bar 100 and an outer cutter bar 400 are arranged on the inner side between the hollow annular shell 200 and the chuck 300. An inner cutter bar handle 110 is provided at one end of the inner cutter bar 100. An outer cutter bar tail 430 is provided at one end of the outer cutter bar 400. The other end of the outer cutter bar tail 430 is located inside the inner cutter bar handle 110. The other end of the inner cutter bar 100 passes through the interior of the outer cutter bar tail 430 and the outer cutter bar 400 in sequence and extends to the outside to connect with the drill bit 140. The inner blade 100 has a first liquid flow cavity 120 inside, and a second liquid flow cavity 420 is provided between the circumferential inner wall of the outer blade 400 and the circumferential outer wall of one end of the inner blade 100. A drain hole 150 is provided on the circumferential outer wall of one end of the inner blade 100. A first liquid inlet pipe 130 is provided on the circumferential outer wall of the inner blade 100, and the other end of the first liquid inlet pipe 130 passes through the outer blade tail 430 and the outer wall of the chuck 300 in sequence and extends to the outside. A liquid outlet pipe 410 is provided on the circumferential outer wall of the outer blade 400, and the other end of the liquid outlet pipe 410 passes through the outer wall of the chuck 300 and extends to the outside. A drain pipe 220 arranged in a ring array is provided on the end wall of one end of the hollow annular shell 200, and a second inlet pipe 210 is provided on the circumferential outer wall of the hollow annular shell 200.

[0025] A sealing ring is provided at the connection between the first inlet pipe 130 and the clamp 300. The other end of the first inlet pipe 130 is connected to the circulating liquid input pipe through a pipe fitting. The first inlet pipe 130 is connected to the first liquid flow cavity 120. Because a sealing ring is provided at the connection between the first inlet pipe 130 and the clamp 300, the connection between the first inlet pipe 130 and the clamp 300 can be sealed.

[0026] A sealing ring is provided at the connection between the outlet pipe 410 and the connector. The other end of the outlet pipe 410 is connected to the circulating liquid output pipe through a pipe connector. The outlet pipe 410 is connected to the second liquid flow cavity 420. Because a sealing ring is provided at the connection between the outlet pipe 410 and the connector, the connection between the outlet pipe 410 and the connector can be sealed.

[0027] The interior of the second inlet pipe 210 is connected to the interior of the hollow annular shell 200. The other end of the second inlet pipe 210 is connected to the liquid input pipe through a pipe fitting. The interior of the drain pipe 220 is connected to the interior of the hollow annular shell 200.

[0028] A sealing sleeve 500 is provided between the outer circumferential wall of the inner tool bar 100 and the inner circumferential wall of the outer tool bar 400. The sealing sleeve 500 can seal the outer circumferential wall of the inner tool bar 100 and the inner circumferential wall of the outer tool bar 400.

[0029] An anti-slip spring is provided between the circumferential inner wall of one end of the collet 300 and the outer tool bar 400. A sealing component is provided at the connection between the interior of one end of the collet 300 and the outer tool bar 400. The sealing component is composed of a waterproof ring and an O-ring. Notches are provided in a ring-shaped array on the circumferential outer wall of the other end of the collet 300.

[0030] Spiral grooves are provided on the circumferential inner walls of the first liquid flow cavity 120 and the second liquid flow cavity 420. The spiral grooves extend the flow time of the coolant in the first liquid flow cavity 120 and the second liquid flow cavity 420, thereby increasing the absorption of heat by the coolant.

[0031] Working principle: During use, the coolant in the external circulating cooling structure is transported from the first inlet pipe 130 to the first liquid flow cavity 120. The coolant in the first liquid flow cavity 120 flows from the drain hole 150 to the second liquid flow cavity 420. The coolant in the second liquid flow cavity 420 is discharged from the outlet pipe 410 and transported back to the circulating cooling structure, realizing the circulation of coolant in the first liquid flow cavity 120 and the second liquid flow cavity 420. Thus, this utility model adopts coolant circulation technology, which can effectively remove the heat generated by the inner tool holder 100 and the outer tool holder 400 during high-speed operation, ensuring that the inner tool holder 100 and the outer tool holder 400 are always at a suitable working temperature, greatly reducing the risk of damage to the inner tool holder 100 or the outer tool holder due to overheating. Wear of the rod 400 extends the service life of the inner and outer blade rods 100 and avoids the risk of heat loss, ensuring the continuous and stable progress of the surgery. The cleaning fluid in the external cleaning structure is delivered from the second inlet pipe 210 to the cavity inside the hollow annular shell 200. The cleaning fluid in the cavity inside the hollow annular shell 200 is delivered to the drain pipe 220 and discharged. The cleaning fluid discharged from the drain pipe 220 is sprayed onto the drill bit 140 to rinse it. The staff can rinse the drill bit 140 as soon as it is removed from the ear, eliminating the need for frequent rinsing of the drill bit 140 through the external cleaning equipment. This avoids the situation where frequent rinsing of the drill bit 140 through the external cleaning equipment would affect the efficiency and success rate of the surgery.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A water-cooling device for an ear drill, comprising a chuck (300), characterized in that: A hollow annular shell (200) is installed on the end wall of one end of the chuck (300). An inner cutter bar (100) and an outer cutter bar (400) are provided on the inner side between the hollow annular shell (200) and the chuck (300). An inner cutter bar handle (110) is provided at one end of the inner cutter bar (100). An outer cutter bar tail (430) is provided at one end of the outer cutter bar (400). The inner side of the inner cutter bar handle (110) is provided at the other end of the outer cutter bar tail (430) and the inner side of the outer cutter bar (400). The other end of the inner cutter bar (100) passes through the interior of the outer cutter bar tail (430) and the outer cutter bar (400) in sequence and extends to the outside to connect with the grinding drill bit (140). The inner blade (100) has a first liquid flow cavity (120) inside. The outer blade (400) has a second liquid flow cavity (420) between its circumferential inner wall and the circumferential outer wall of one end of the inner blade (100). The inner blade (100) has a drain hole (150) on its circumferential outer wall. The inner blade (100) has a first inlet pipe (130) on its circumferential outer wall. The other end of the first inlet pipe (130) passes through the outer blade tail (430) and the outer wall of the chuck (300) and extends to the outside. The outer blade (400) has an outlet pipe (410) on its circumferential outer wall. The other end of the outlet pipe (410) passes through the outer wall of the chuck (300) and extends to the outside. The hollow annular shell (200) has a drain pipe (220) arranged in a ring array on one end wall, and a second inlet pipe (210) is provided on the circumferential outer wall of the hollow annular shell (200).

2. The water cooling device for the ear drill according to claim 1, characterized in that: A sealing ring is provided at the connection between the first liquid inlet pipe (130) and the clamp (300). The other end of the first liquid inlet pipe (130) is connected to the circulating liquid input pipe through a pipe joint. The first liquid inlet pipe (130) is connected to the first liquid flow cavity (120).

3. The water-cooling device for the ear drill according to claim 1, characterized in that: A sealing ring is provided at the connection between the outlet pipe (410) and the connector. The other end of the outlet pipe (410) is connected to the circulating liquid output pipe through a pipe connector. The outlet pipe (410) is connected to the second liquid flow cavity (420).

4. The water cooling device for the ear drill according to claim 1, characterized in that: The interior of the second inlet pipe (210) is connected to the interior of the hollow annular shell (200), and the other end of the second inlet pipe (210) is connected to the liquid input pipe through a pipe joint. The interior of the drain pipe (220) is connected to the interior of the hollow annular shell (200).

5. The water cooling device for the ear drill according to claim 1, characterized in that: A sealing sleeve (500) is provided between the circumferential outer wall of the other end of the inner cutter bar (100) and the circumferential inner wall of the other end of the outer cutter bar (400).

6. The water-cooling device for the ear drill according to claim 1, characterized in that: An anti-slip spring is provided between the circumferential inner wall of one end of the chuck (300) and the outer tool bar (400). A sealing assembly is provided at the connection between the interior of one end of the chuck (300) and the outer tool bar (400). The sealing assembly is composed of a waterproof ring and an O-ring. Notches distributed in a ring array are provided on the circumferential outer wall of the other end of the chuck (300).

7. The water cooling device for the ear drill according to claim 1, characterized in that: Spiral grooves are provided on the circumferential inner walls of the first liquid flow cavity (120) and the second liquid flow cavity (420).

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