Bone file

Abstract

The utility model relates to the technical field of orthopedic medical instruments, in particular to a bone file which comprises a file, the file comprises a file handle and a file tooth plate, the file tooth plate comprises an arc-shaped file plate and a plurality of file tooth sets evenly arranged on one side of the arc-shaped file plate, and tooth blades of the file tooth sets deviate from the file handle. The center line of the arc where the arc-shaped file board is located is parallel to or coincides with the center line of the file handle. According to the bone file, the arc-shaped file plate is of the arc-shaped plate-shaped structure, the file tooth sets are only arranged on one side face of the arc-shaped file plate, control is easy when bone tissues are filed, and soft tissues of non-working parts are effectively prevented from being accidentally injured by the file teeth.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic medical instruments, in particular to a bone rasp. Background Art

[0002] During orthopedic surgery, it is often necessary to file down some parts of the bone. This is done using a bone rasp. When using a bone rasp, the tooth surface of the bone rasp is usually used to file back and forth on the bone to file down bone spurs or protrusions.

[0003] The existing Chinese patent CN117530746A discloses a surgical file, including a handle and a cutter head, the cutter head including a cutter head body, the cutter head body is hollow, a plurality of file teeth distributed in an array are arranged on the cutter head body, a slag hole groove is provided between adjacent file teeth on the cutter head body, a collecting groove is provided on the cutter handle, the cutter head and the cutter handle are detachably fixedly connected, when the cutter head and the cutter handle are installed and fixed, the cutter handle is installed in the hollow part of the cutter head body, the slag hole groove is connected to the collecting groove, and the collecting groove is slidably connected to a cover plate at the slot for closing the slot. In the file, the file teeth fixed on the cutter head body are used to file bones or other tissues, and the setting of the slag hole groove enables the broken slag to enter the interior of the cutter head body through the slag hole groove, and then enter the cutter handle for storage, which can reduce the time of repeated cleaning, save operation time, and facilitate operation.

[0004] However, in orthopedic or spinal surgery, when bone files are used to process bone tissue, there are often soft tissues such as blood vessels or nerve tissues near the processing location. The multiple file teeth arranged on both sides of the file of the above patent are easy to accidentally damage the soft tissues in non-working areas. In severe cases, secondary injuries are caused, increasing the patient's pain. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a bone rasp to at least solve the problem that the multiple rasp teeth arranged on the front and back sides of the existing bone rasp are easy to accidentally damage the soft tissue in the non-working part when processing bone tissue.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] The utility model discloses a bone rasp, comprising a file, wherein the file comprises a file handle and a file tooth plate, wherein the file tooth plate comprises an arc-shaped file plate and a plurality of file tooth groups evenly arranged on the outer side of the arc-shaped file plate, and the center line of the arc where the arc-shaped file plate is located is parallel to or coincides with the center line of the file handle.

[0008] The bone rasp adopting the above technical solution has an arc-shaped file plate with an arc-shaped plate structure and a file tooth group arranged only on one side of the arc-shaped file plate. When grinding bone tissue, it is easy to control and effectively avoids the file teeth from accidentally damaging soft tissue in non-working parts.

[0009] In some embodiments, the arc-shaped file plate has a chip removal groove between two adjacent file tooth groups, and the file tooth group includes two tooth edges arranged opposite to each other.

[0010] In some embodiments, a connecting plate is connected between the file handle and the arc-shaped file plate, one end of the connecting plate is vertically connected to one end of the file handle, and the other end of the connecting plate is vertically connected to the arc-shaped file plate.

[0011] In some embodiments, the file handle and the curved file plate are both located on the same side of the connecting plate.

[0012] In some embodiments, the interior of the file handle has a through hole penetrating the entire file handle.

[0013] In some embodiments, the bone file further includes a drive adapter assembly for driving the file to swing back and forth, the drive adapter assembly including a transmission shaft, a reciprocating connecting rod, and an input shaft, a first eccentric column is fixed to the end of the transmission shaft away from the file handle, the first eccentric column is eccentrically arranged with the transmission shaft, a second eccentric column is fixed to one end of the input shaft, the second eccentric column is eccentrically arranged with the input shaft, the first eccentric column and the second eccentric column are respectively inserted at opposite ends of the reciprocating connecting rod, and the transmission shaft and the input shaft are respectively located on opposite sides of the reciprocating connecting rod, and the center lines of the transmission shaft and the input shaft are parallel and do not overlap.

[0014] In some embodiments, a support tube is sleeved on the transmission shaft.

[0015] In some embodiments, the bone file further comprises an outer shell and a spiral water cooling jacket, a water injection channel is formed between the outer shell and the spiral water cooling jacket, the support tube is inserted into the outer shell, a water injection chamber is formed between an end surface of the support tube away from the file handle and the transmission shaft and the inner wall of the outer shell, the water injection chamber is connected with the water injection channel, and the water injection chamber is connected with the hollow interior of the file handle.

[0016] In some embodiments, the transmission shaft is a hollow tubular structure, the hollow interior of the transmission shaft is connected to the hollow interior of the file handle, the transmission shaft has a water inlet hole, the water inlet hole is connected to the hollow interior of the transmission shaft, and the water inlet hole is located in the water injection cavity.

[0017] In some embodiments, a support sleeve for blocking the water injection cavity is installed between the transmission shaft and the outer shell, and a sealing sleeve is sleeved on one end of the support sleeve located in the water injection cavity, one end of the sealing sleeve is sleeved on the transmission shaft, and the other end is sleeved on the support sleeve, and the water inlet hole is located on the outside of the sealing sleeve.

[0018] The bone file of the utility model is connected to an external driving motor through an input shaft. When the driving motor is started, the input shaft rotates. Under the cooperation between the second eccentric column, the reciprocating connecting rod and the first eccentric column, the unidirectional rotation of the input shaft is converted into the reciprocating swing of the transmission shaft, so that the file tooth plate in the file also reciprocates to achieve the grinding of bone tissue. The bone file of the utility model injects water into the spiral channel on the outer wall of the spiral water cooling jacket through an external water injection mechanism. The injected water flows into the water injection cavity, enters the hollow interior of the transmission shaft through the water inlet hole on the transmission shaft, and then flows into the hollow interior of the file handle and flows out from the end surface of the file handle, which is used to flush and cool the grinding position during grinding and further improve the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the bone rasp of the utility model;

[0020] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 It is a structural schematic diagram of the bone rasp of the utility model;

[0022] Figure 4 It is an enlarged structural diagram of a file;

[0023] Figure 5 It is an enlarged structural diagram of the transmission shaft, the reciprocating connecting rod and the input shaft;

[0024] Figure 6 It is an enlarged structural schematic diagram of the spiral water cooling jacket;

[0025] Figure 7 is an enlarged structural schematic diagram of the front housing;

[0026] Among them, there are a file handle 110, a through hole 111, a file tooth plate 120, an arc file plate 121, a file tooth group 122, a tooth blade 1220, a connecting plate 130, a transmission shaft 210, a first eccentric column 211, a water inlet hole 212, a reciprocating connecting rod 220, an input shaft 230, a second eccentric column 231, a support tube 240, a shell 300, a front shell 310, a water injection hole 311, a rear shell 320, a spiral water cooling jacket 400, a spiral channel 410, a notch 420, a support sleeve 510, a sealing sleeve 520, a water injection chamber 001, and a chip removal groove 002. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0028] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Please refer to Figure 1-Figure 7 The bone rasp of the utility model comprises a rasp, and the rasp comprises a rasp handle 110 and a rasp tooth plate 120, and the rasp tooth plate 120 is mounted on the rasp handle 110. The rasp tooth plate 120 comprises an arc rasp plate 121, and a plurality of rasp tooth groups 122 evenly arranged on the outer surface of the arc rasp plate 121, and the arc rasp plate 121 is an arc plate-shaped structure. The tooth edges 1220 of the rasp tooth groups 122 are away from the rasp handle 110, and the center line of the arc where the arc rasp plate 121 is located is parallel to or coincides with the center line of the rasp handle 110.

[0030] The arc file plate 121 is an arc plate structure, and the file tooth group 122 is arranged only on one side of the arc file plate 121. When filing bone tissue, it is easy to control the tooth edge 1220 to file only at the bone tissue position that needs to be filed, effectively avoiding the file teeth from accidentally damaging the soft tissue in the non-working position, and avoiding secondary injury. The center line of the arc where the arc file plate 121 is located is parallel to or coincides with the center line of the file handle 110, which is more labor-saving and conducive to the transmission of kinetic energy when filing, and is also conducive to controlling the filing position of the file tooth plate 120.

[0031] In this embodiment, in order to prevent the accumulation of fine chips generated during the grinding of bone tissue and affect the grinding effect and efficiency, the arc-shaped file plate 121 has a chip removal groove 002 between two adjacent file tooth groups 122. The chip removal groove 002 can discharge the fine chips generated by the grinding and filing under the centrifugal force generated by the reciprocating swing when grinding and filing the bone tissue, so as to prevent the accumulation from affecting the grinding effect. The file tooth group 122 includes two tooth edges 1220 arranged opposite to each other.

[0032] In this embodiment, a connecting plate 130 is fixedly connected between the file handle 110 and the curved file plate 121, one end of the connecting plate 130 is vertically connected to one end of the file handle 110, and the other end is vertically connected to the curved file plate 121, that is, the file handle 110 and the curved file plate 121 are both perpendicular to the connecting plate 130. In order to facilitate the transmission of actions and save more effort, it is preferred that the file handle 110 and the curved file plate 121 are both located on the same side of the connecting plate 130. Of course, the file handle 110 and the curved file plate 121 can also be fixed vertically on opposite sides of the connecting plate 130.

[0033] In this embodiment, the file handle 110 has a through hole 111 that runs through the entire file handle 110, that is, the file handle 110 as a whole is a hollow tubular structure, and water can be passed into the file handle 110. The passed water can flow out from the end surface of the file handle 110 connected to the connecting plate 130, which can achieve flushing and cooling of the file during filing, which is further beneficial to improving the filing effect and efficiency.

[0034] In this embodiment, the bone rasp also includes a drive adapter assembly for driving the rasp to reciprocate, and the drive adapter assembly includes a transmission shaft 210, a reciprocating connecting rod 220, and an input shaft 230. Figure 5 A first eccentric column 211 is fixed to one end of the transmission shaft 210 away from the file handle 110, and the first eccentric column 211 is eccentrically arranged with respect to the transmission shaft 210. A second eccentric column 231 is fixed to one end of the input shaft 230, and the second eccentric column 231 is eccentrically arranged with respect to the input shaft 230. The first eccentric column 211 and the second eccentric column 231 are respectively plugged into opposite ends of the reciprocating connecting rod 220, and the transmission shaft 210 and the input shaft 230 are respectively located at opposite sides of the reciprocating connecting rod 220, and the center lines of the transmission shaft 210 and the input shaft 230 are parallel and do not overlap. The input shaft 230 is connected to the rotating shaft of an external driving motor. When the driving motor is started, the input shaft 230 rotates to drive the second eccentric column 231 to rotate eccentrically, thereby driving the reciprocating connecting rod 220 to rotate, and then driving the transmission shaft 210 to swing back and forth under the connection with the first eccentric column 211. The transmission shaft 210 is connected to the file handle 110. The rotation of the transmission shaft 210 drives the file tooth plate 120 in the file to swing back and forth to grind the bone tissue.

[0035] In this embodiment, in order to enhance the rigidity of the transmission shaft 210 , a support tube 240 is sleeved on the transmission shaft 210 .

[0036] In this embodiment, the bone rasp further includes a shell 300 and a spiral water-cooling jacket 400, a water injection channel is formed between the shell 300 and the spiral water-cooling jacket 400, the support tube 240 is inserted into the shell 300, and a water injection chamber 001 is formed between the end surface of the support tube 240 away from the file handle 110 and the transmission shaft 210 and the inner wall of the shell 300, the water injection chamber 001 is connected to the water injection channel, and the water injection chamber 001 is connected to the hollow interior of the file handle 110.

[0037] Specifically, the housing 300 includes a front housing 310 and a rear housing 320. One end of the front housing 310 is inserted into the rear housing 320, and one end of the rear housing 320 is clamped on the outer wall of the front housing 310 and sealed with glue. The support tube 240 is inserted into the front housing 310 and sealed with glue. The front housing 310 has a channel inside, and the end surface of the support tube 240 away from the file handle 110 and the transmission shaft 210 and the hole wall of the channel inside the housing 300 form a water injection chamber 001. The spiral water cooling jacket 400 is located in the rear housing 320, please refer to Figure 6 The spiral water-cooling jacket 400 has a spiral channel 410 on its outer wall, and the spiral water-cooling jacket 400 has a notch 420 at the outlet end of the spiral channel 410. The front housing 310 has a water injection hole 311 at a position corresponding to the notch 420, and the water injection hole 311 is connected to the water injection cavity 001. The transmission shaft 210 is a hollow tubular structure, and the hollow interior of the transmission shaft 210 is connected to the hollow interior of the file handle 110. The transmission shaft 210 has a water inlet hole 212, which is connected to the hollow interior of the transmission shaft 210 and is located in the water injection cavity 001.

[0038] In this embodiment, in order to enhance the sealing performance of the water injection cavity 001, a support sleeve 510 for blocking the water injection cavity 001 is installed between the transmission shaft 210 and the housing 300, and the support sleeve 510 and the front housing 310 are sealed by applying glue. A sealing sleeve 520 is sleeved on one end of the support sleeve 510 located in the water injection cavity 001, one end of the sealing sleeve 520 is sleeved on the transmission shaft 210, and the other end is sleeved on the support sleeve 510, and the water inlet hole 212 is located on the outside of the sealing sleeve 520.

[0039] The bone rasp of the utility model is connected to an external driving motor through an input shaft 230. When the driving motor is started, the input shaft 230 rotates. Under the cooperation between the second eccentric column 231, the reciprocating connecting rod 220, and the first eccentric column 211, the unidirectional rotation of the input shaft 230 is converted into the reciprocating swing of the transmission shaft 210, so that the file tooth plate 120 in the file also reciprocates to achieve the grinding of bone tissue. The bone rasp of the utility model injects water into the spiral channel 410 on the outer wall of the spiral water cooling jacket 400 through an external water injection mechanism. The injected water flows into the water injection hole 311 through the gap, and then enters the water injection chamber 001. The water enters the hollow interior of the transmission shaft 210 through the water inlet hole 212 on the transmission shaft 210, and then flows into the hollow interior of the file handle 110, and flows out from the end surface of the file handle 110, which is used to flush and cool the grinding position during grinding, and further improve the grinding efficiency.

[0040] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A bone rasp, characterized in that: The invention comprises a file, which comprises a file handle and a file tooth plate. The file tooth plate comprises an arc-shaped file plate and a plurality of file tooth groups evenly arranged on the outer side of the arc-shaped file plate. The center line of the arc where the arc-shaped file plate is located is parallel to or coincides with the center line of the file handle.

2. The bone rasp according to claim 1, characterized in that: The arc-shaped file plate has a chip removal groove between two adjacent file tooth groups, and the file tooth group includes two tooth edges arranged oppositely.

3. The bone rasp according to claim 1, characterized in that: A connecting plate is connected between the file handle and the arc-shaped file plate, one end of the connecting plate is vertically connected to one end of the file handle, and the other end of the connecting plate is vertically connected to the arc-shaped file plate.

4. The bone rasp according to claim 3, characterized in that: The file handle and the arc-shaped file plate are both located on the same side of the connecting plate.

5. The bone rasp according to claim 1, characterized in that: The interior of the file handle is provided with a through hole which penetrates the entire file handle.

6. The bone rasp according to any one of claims 1 to 5, characterized in that: The bone file also includes a drive adapter assembly for driving the file to swing back and forth, the drive adapter assembly includes a transmission shaft, a reciprocating connecting rod, and an input shaft, a first eccentric column is fixed to the end of the transmission shaft away from the file handle, the first eccentric column is eccentrically arranged with the transmission shaft, a second eccentric column is fixed to one end of the input shaft, the second eccentric column is eccentrically arranged with the input shaft, the first eccentric column and the second eccentric column are respectively inserted at opposite ends of the reciprocating connecting rod, and the transmission shaft and the input shaft are respectively located at opposite sides of the reciprocating connecting rod, and the center lines of the transmission shaft and the input shaft are parallel and do not overlap.

7. The bone rasp according to claim 6, characterized in that: A support tube is sleeved on the transmission shaft.

8. The bone rasp according to claim 7, characterized in that: The bone file also includes an outer shell and a spiral water cooling jacket, a water injection channel is formed between the outer shell and the spiral water cooling jacket, the support tube is inserted in the outer shell, a water injection cavity is formed between an end surface of the support tube away from the file handle and the transmission shaft and the inner wall of the outer shell, the water injection cavity is connected with the water injection channel, and the water injection cavity is connected with the hollow interior of the file handle.

9. The bone rasp according to claim 8, characterized in that: The transmission shaft is a hollow tubular structure, the hollow interior of the transmission shaft is connected to the hollow interior of the file handle, the transmission shaft is provided with a water inlet hole, the water inlet hole is connected to the hollow interior of the transmission shaft, and the water inlet hole is located in the water injection cavity.

10. The bone rasp according to claim 9, characterized in that: A support sleeve for blocking the water injection cavity is installed between the transmission shaft and the housing. A sealing sleeve is sleeved on one end of the support sleeve located in the water injection cavity. One end of the sealing sleeve is sleeved on the transmission shaft, and the other end is sleeved on the support sleeve, and the water inlet hole is located on the outside of the sealing sleeve.

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