Orthopedic pendulum file

Abstract

The utility model relates to the technical field of medical instruments, in particular to a pendulum file for orthopedics department, which comprises a file head assembly, a sheath and an interface assembly, the file head assembly is used for reciprocating swinging to grind bone tissues, the file head assembly comprises a file head and a transmission rod, one end of the file head is connected with the transmission rod, and the transmission rod is used for driving the file head to reciprocate swinging; the sheath is used for isolating bone tissues ground by the file head, is mounted on the outer side of the file head and completely covers one surface of the file head; the interface assembly is used for being connected with an external power mechanism and driving the transmission rod to swing back and forth under the action of the power mechanism. According to the pendulum file for the orthopedics department, when the file head assembly swings back and forth, the sheath is in a relatively static state, so that the sheath can effectively separate other tissues from tissues which are being ground by the file head, and the situation that when the bone file treats bone tissues, the file head accidentally hurts soft tissues such as other blood vessels or nervous tissues nearby to be treated is avoided; and secondary damage is further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an orthopedic oscillating file. Background Art

[0002] With the advancement of medical technology, minimally invasive technology is being used more and more widely. Minimally invasive technology is a technology that achieves the best surgical effect with minimal invasion and physiological interference. It has the advantages of small surgical incision, short recovery time and few complications. When orthopedic surgeons perform surgery on orthopedic patients, in order to deal with patients' bone spurs, bone hyperplasia and other problems, they will use bone files to trim the bones and grind them flat.

[0003] Oscillating files are a type of bone files that use the file to do reciprocating swings to grind bone tissue. In reality, bone files are often used to process bone tissue in orthopedic or spinal surgery. There are often soft tissues such as blood vessels or nerve tissue near the processing location, such as vertebral foramen root nerve decompression and other operations. Traditional grinding tools or files are easy to contact blood vessels or nerve roots during work, thus causing damage to them. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an orthopedic oscillating file, so as to at least solve the problem that the existing bone files are easy to contact with blood vessels or nerve roots during operation, thereby causing damage to them.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] The utility model provides an orthopedic oscillating file, comprising:

[0007] A file head assembly is used for grinding bone tissue by reciprocating swing. The file head assembly includes a file head and a transmission rod. One end of the file head is connected to the transmission rod. The transmission rod is used to drive the file head to reciprocate.

[0008] The sheath is installed on the outside of the file head, and the sheath is located on the side opposite to the file teeth.

[0009] In some embodiments, the file head includes a connecting rod, a file body and at least one group of file teeth, wherein the at least one group of file teeth is equidistantly distributed on the inner side of the file body, the file body is a hollow structure, and the file body is connected to one end of the connecting rod.

[0010] With the oscillating file adopting the above technical solution, when the file head assembly makes reciprocating swings, the sheath is in a relatively static state. Therefore, the sheath can effectively isolate other tissues from the tissue being ground by the file head, thereby preventing the file head from accidentally damaging other soft tissues such as blood vessels or nerve tissues nearby when the bone file is processing bone tissue, thereby further avoiding secondary injuries.

[0011] In some embodiments, the center line of the file body intersects with the center line of the connecting rod, and the other end of the connecting rod is inserted into the transmission rod.

[0012] In some embodiments, the shape of the sheath matches the shape of the file head, and the sheath has a chip removal hole at a position corresponding to the file body.

[0013] In some embodiments, the oscillating file further includes a support rod assembly, wherein the support rod assembly includes a support sleeve and a lining rod, wherein the lining rod is sleeved on the transmission rod, and the support sleeve is sleeved on the lining rod.

[0014] In some embodiments, the oscillating file further includes an interface assembly, which includes an input shaft and a reciprocating conversion component, wherein one end of the input shaft is connected to an external power mechanism, and an eccentric shaft is fixed to the other end, and the eccentric shaft is eccentrically arranged with respect to the input shaft. The reciprocating conversion component includes a shift fork and a first bearing, wherein the shift fork is fixedly mounted on one end of the transmission rod away from the file head, and the first bearing is mounted in the fork opening of the shift fork, and the outer wall of the first bearing is in contact with the inner wall of the fork opening, and the first bearing is sleeved on the eccentric shaft.

[0015] In some embodiments, the interface assembly further includes a front shell, a rear shell and an interface shell, one end of the front shell is inserted into the rear shell, the interface shell is located inside the rear shell, the ends of the transmission rod and the support sleeve away from the file head are both inserted into the front shell, and the input shaft is passed through the interface shell.

[0016] In some embodiments, the front outer shell has a first step hole inside, and the rear outer shell is also provided with a spiral water cooling jacket, one end of the spiral water cooling jacket is sleeved on the front outer shell, and the other end is sleeved on the interface shell, the outer wall of the spiral water cooling jacket has a water injection channel, and the water injection channel is connected to the first step hole, the support sleeve is an internal hollow tubular structure, and the transmission rod also has an internal hollow tubular structure, the water injection channel is connected to the interior of the transmission rod through the first step hole and the interior of the support sleeve, the connecting rod also has an internal hollow tubular structure, the interior of the connecting rod is connected to the interior of the transmission rod, and the connecting rod has a water outlet hole on the outside of the lining rod, and the water outlet hole is connected to the interior of the connecting rod.

[0017] In some embodiments, the shell of the front outer shell has a water injection hole, which is communicated with the first step hole. The interior of the support sleeve has a second step hole, which is communicated with the first step hole. The transmission rod has a water inlet hole at a position corresponding to the second step hole, and the water inlet hole is communicated with the second step hole.

[0018] In some embodiments, a sealing tube is sleeved on one end of the transmission rod away from the file head assembly, a sealing sleeve is sleeved on the sealing tube, one end of the sealing sleeve is sleeved on the transmission rod, and the other end is sleeved on the sealing tube, and the water inlet hole is on the outside of the sealing tube and the sealing sleeve.

[0019] The orthopedic oscillating file of the utility model has a sheath in a relatively static state when the file head assembly makes a reciprocating swing. Therefore, the sheath can effectively isolate other tissues from the tissue being ground by the file head, thereby preventing the file head from accidentally damaging other soft tissues such as blood vessels or nerve tissues nearby when the bone file is processing bone tissue, thereby further avoiding secondary injuries.

[0020] The utility model provides an orthopedic oscillating file with a water flow channel inside the file head assembly and the interface assembly. The water flow channel is formed by connecting the spiral water cooling jacket, the water injection hole, the first step hole, the second step hole, the transmission rod and the connecting rod, and finally discharged from the water outlet of the connecting rod, so as to cool and rinse the grinding part, thereby improving the grinding efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the orthopedic oscillating file of the utility model;

[0022] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0024] Figure 4 It is a structural schematic diagram of the orthopedic oscillating file of the utility model;

[0025] Figure 5 It is an enlarged structural diagram of the file head;

[0026] Figure 6 It is a schematic diagram of the enlarged structure of the sheath;

[0027] Figure 7 It is a schematic diagram of the structure of the connection between the shift fork and the transmission rod;

[0028] Figure 8 It is an enlarged structural schematic diagram of the spiral water cooling jacket;

[0029] Among them, the file head 110, the connecting rod 111, the water outlet hole 1111, the file body 112, the file teeth 113, the transmission rod 120, the water inlet hole 121, the sheath 200, the sheath body 210, the chip removal hole 211, the connecting sleeve 220, the support sleeve 310, the second step hole 311, the liner rod 320, the input shaft 410, the eccentric shaft 411, the second bearing 412, the reciprocating conversion member 420, the shift fork 421, the first bearing 422, the front shell 430, the slot 431, the first step hole 432, the water injection hole 433, the rear shell 440, the retaining ring 441, the interface shell 450, the bearing retaining ring 510, the bearing limit sleeve 520, the spiral water cooling jacket 600, the straight channel 610, the spiral channel 620, the notch 630, the sealing tube 710, and the sealing sleeve 720. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] Please refer to Figure 1-Figure 7The orthopedic oscillating file of the utility model comprises a file head assembly, a sheath 200 and an interface assembly. The file head assembly is used for reciprocating and grinding bone tissue. The file head assembly comprises a file head 110 and a transmission rod 120. One end of the file head 110 is connected to the transmission rod 120. The transmission rod 120 is used to drive the file head 110 to reciprocate. The file head 110 has file teeth 113. The sheath 200 is used to protect tissue in a non-grinding area. The sheath 200 is installed on the outside of the file head 110, and the sheath 200 is located on the side opposite to the file teeth 113. The interface assembly is used to connect an external power mechanism, and is used to drive the transmission rod 120 to reciprocate under the action of the power mechanism.

[0033] In the orthopedic oscillating file of the utility model, when the file head assembly is reciprocatingly oscillating, the sheath 200 is in a relatively static state, so the sheath 200 can effectively separate other tissues from the tissue being ground by the file head 110, so as to prevent the file head 110 from accidentally damaging other soft tissues such as blood vessels or nerve tissues nearby when the bone file is processing the bone tissue, thereby further preventing secondary injuries. In actual operation, the sheath can be used to push away non-cutting objects such as tissues or nerves, and then the file teeth 113 on the inner side of the file head can be used to grind the bone tissue.

[0034] Please refer to Figure 5 The file head 110 includes a connecting rod 111, a file body 112 and at least one group of file teeth 113. The at least one group of file teeth 113 is evenly distributed on the inner side of the file body 112. The group of file teeth 113 includes two file edges arranged opposite to each other. In order to facilitate the file head 110 to effectively discharge the fine chips ground when grinding the tissue, avoid a large amount of accumulation at the grinding position, and thus improve the grinding efficiency and effect, the file body 112 is set to be a hollow structure, that is, the file body 112 has a plurality of through holes, and the hollow part of the hollow structure completely covers the installation position of the file teeth 113, and the file body 112 is connected to one end of the connecting rod 111.

[0035] In order to facilitate the use of the file head for grinding work with less effort, the center line of the file body 112 intersects with the center line of the connecting rod 111, the other end of the connecting rod 111 is inserted into the transmission rod 120, and the connecting rod 111 and the transmission rod 120 are coaxially arranged.

[0036] Please refer to Figure 6In order to better realize the protective effect of the sheath 200 on other tissues near the grinding tissue, the shape of the sheath 200 is adapted to the shape of the file head 110, and the sheath 200 has a chip removal hole at a position corresponding to the file body 112. Such a setting is also conducive to discharging the fine chips ground. Specifically, the sheath 200 includes a sheath body 210 and a connecting sleeve 220. The sheath body 210 and the connecting sleeve 220 are fixedly connected, and the added angle of the center lines of the sheath body 210 and the connecting sleeve 220 is the same as the angle between the file body 112 and the connecting rod 111. The sheath body 210 is correspondingly installed on the outside of the file body 112, and the sheath body 210 has a chip removal hole 211 corresponding to the hollow position of the file body 112. The connecting sleeve 220 is located on the outside of the connecting rod 111.

[0037] In this embodiment, the swing file further includes a support rod assembly, which is used to protect and support the transmission rod 120. The support rod assembly includes a support sleeve 310 and a lining rod 320. The support sleeve 310 is sleeved on the lining rod 320, and the lining rod 320 passes through the support sleeve 310 and is sleeved on the transmission rod 120. The connecting sleeve 220 is fixedly sleeved on the lining rod 320 and contacts the end surface of the support sleeve 310. Therefore, when the transmission rod 120 drives the file head 110 to swing back and forth, the sheath 200 is in a stationary state.

[0038] In this embodiment, the interface assembly includes an input shaft 410 and a reciprocating conversion member 420. One end of the input shaft 410 is connected to an external power mechanism (such as a motor), and an eccentric shaft 411 is fixed to the end of the other end. The eccentric shaft 411 is eccentrically arranged with respect to the input shaft 410. The reciprocating conversion member includes a shift fork 421 and a first bearing 422. The shift fork 421 is fixedly mounted on the end of the transmission rod 120 away from the file head 110. Please refer to Figure 7 The first bearing 422 is installed in the fork of the shift fork 421, the outer wall of the first bearing 422 is in contact with the inner wall of the fork, and the first bearing 422 is sleeved on the eccentric shaft 411. The input shaft 410 and the transmission rod 120 are eccentrically arranged.

[0039] In this embodiment, the interface assembly further comprises a front shell 430, a rear shell 440 and an interface housing 450. One end of the front shell 430 is inserted into the rear shell 440. Specifically, the outer wall of the front shell 430 is provided with a circumferentially arranged slot 431. The rear shell 440 is provided with a snap ring 441 at a position corresponding to the slot 431. The snap ring 441 is tightly embedded in the slot 431 and sealed with glue to improve the sealing effect. The interface housing 450 is located in the rear shell 440. The transmission rod 120 and the end of the support sleeve 310 away from the file head 110 are both inserted into the front shell 430, and the end of the support sleeve 310 inserted into the front shell 430 is tightly connected to the front shell 430 through glue. The input shaft 410 is arranged in the interface housing 450. The second bearing 412 is sleeved on the input shaft 410. The outer wall of the second bearing 412 abuts against the inner wall of the interface housing 450. A bearing retaining ring 510 and a bearing limiting sleeve 520 are also sleeved on the input shaft 410 , and the second bearing 412 is located between the bearing retaining ring 510 and the bearing limiting sleeve 520 to prevent the second bearing 412 from axial sliding.

[0040] In order to cool and rinse the grinding position, a water flow channel is provided inside the file head assembly and the interface assembly. Specifically, the front shell 430 has a first step hole 432 inside, and the rear shell 440 is also provided with a spiral water cooling jacket 600. One end of the spiral water cooling jacket 600 is sleeved on the front shell 430, and the other end is sleeved on the interface shell 450. The outer wall of the spiral water cooling jacket 600 has a water injection channel, and the water injection channel includes a straight channel 610 and a spiral channel 620 that are interconnected. The water injection channel is connected to the first step hole 432, the support sleeve 310 is a hollow tubular structure, and the transmission rod 120 also has a hollow tubular structure. The water injection channel is connected to the interior of the transmission rod 120 through the first step hole 432 and the interior of the support sleeve 310. The connecting rod 111 also has a hollow tubular structure. The interior of the connecting rod 111 is connected to the interior of the transmission rod 120, which is used to form a water injection flow channel. The connecting rod 111 has a water outlet 1111 on the outer side of the liner rod 320. The water outlet 1111 is communicated with the interior of the connecting rod 111. The water outlet 1111 is used to discharge water to flush and cool the grinding position.

[0041] The shell of the front housing 430 has a water injection hole 433, which is communicated with the first step hole 432. For details, please refer to Figure 8The shell of the spiral water cooling jacket 600 is provided with a notch 630 at the water outlet position of the spiral channel 620, and the position of the notch 630 corresponds to the position of the water injection hole 433. The support sleeve 310 has a second step hole 311 inside, and the inner diameter of the second step hole 311 is larger than the inner diameter of the transmission rod 120. The second step hole 311 is connected to the first step hole 432, and the transmission rod 120 has a water inlet hole 121 at a position corresponding to the second step hole 311, and the water inlet hole 121 is connected to the second step hole 311.

[0042] In order to further enhance the sealing effect and improve the water injection efficiency, a sealing tube 710 is sleeved on one end of the transmission rod 120 away from the file head assembly, one end of the sealing tube 710 is plugged into the front shell 430, and the end of the sealing tube 710 plugged into the front shell 430 is tightly connected to the front shell 430 through glue. A sealing sleeve 720 is sleeved on the other end of the sealing tube 710, one end of the sealing sleeve 720 is sleeved on the transmission rod 120 and located in the second step hole 311, and the other end is sleeved on the sealing tube 710 and located in the first step hole 432. The water inlet 121 is outside the sealing tube 710 and the sealing sleeve 720 to avoid the sealing tube 710 and the sealing sleeve 720 blocking the water inlet 121. In this embodiment, the number and size of the water inlet 121 are not limited, as long as water can be injected. In addition, the sealing sleeve 720 can be a sealing ring structure formed by curing glue, or a sealing ring structure made by processing other plastics or rubber.

[0043] The orthopedic oscillating file of the utility model is connected to an external power mechanism, such as a motor, through an input shaft 410. The rotation of the motor drives the input shaft 410 to rotate. When the input shaft 410 rotates, the eccentric shaft 411 at the end thereof follows and makes eccentric rotation, driving the first bearing 422 to slide and cooperate in the fork of the shift fork 421, thereby driving the shift fork 421 to make left and right reciprocating movements in the circumferential direction, and then driving the file head to make reciprocating swings through the transmission rod 120 to grind the bone tissue. In addition, when the file head assembly makes reciprocating swings, the sheath 200 is in a relatively static state, and the sheath 200 can effectively isolate other tissues from the tissue being ground by the file head, so as to prevent the file head from accidentally damaging other soft tissues such as blood vessels or nerve tissues near the bone tissue when the bone file is processing the bone tissue, thereby further avoiding secondary injuries.

[0044] The orthopedic oscillating file of the utility model introduces cooling water into the spiral water-cooling jacket 600. The cooling water passes through the water injection channel and the notch 630 on the outer wall of the spiral water-cooling jacket 600, and then enters the cavity formed by the first step hole 432, the sealing sleeve 720 and the sealing tube 710 in the front shell 430 through the water injection hole 433 on the front shell 430, and enters the second step hole 311 in the support sleeve 310. In the second step hole 311, the cooling water enters the interior of the transmission rod 120 through the water inlet hole 121, flows to the interior of the connecting rod 111, and is finally discharged from the water outlet 1111, so as to cool and rinse the grinding part, thereby improving the grinding efficiency and effect.

[0045] 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. An orthopedic oscillating file, characterized in that: include: A file head assembly is used for grinding bone tissue by reciprocating swing. The file head assembly comprises a file head and a transmission rod. One end of the file head is connected to the transmission rod. The transmission rod is used to drive the file head to reciprocate. The file head has file teeth. The sheath is installed on the outside of the file head, and the sheath is located on the side opposite to the file teeth.

2. The orthopedic oscillating file according to claim 1, characterized in that: The file head comprises a connecting rod, a file body and at least one group of file teeth, wherein the at least one group of file teeth is evenly distributed on the inner side of the file body, the file body is a hollow structure, and the file body is connected to one end of the connecting rod.

3. The orthopedic oscillating file according to claim 2, characterized in that: The center line of the file body intersects with the center line of the connecting rod, and the other end of the connecting rod is inserted into the transmission rod.

4. The orthopedic oscillating file according to claim 3, characterized in that: The shape of the protective sheath is matched with the shape of the file head, and a chip removal hole is provided on the protective sheath at a position corresponding to the file body.

5. The orthopedic oscillating file according to claim 4, characterized in that: The swing file also includes a support rod assembly, which includes a support sleeve and a lining rod. The lining rod is sleeved on the transmission rod, and the support sleeve is sleeved on the lining rod.

6. The orthopedic oscillating file according to claim 5, characterized in that: The oscillating file also includes an interface component, which includes an input shaft and a reciprocating conversion component. One end of the input shaft is connected to an external power mechanism, and an eccentric shaft is fixed to the other end. The eccentric shaft is eccentrically arranged with respect to the input shaft. The reciprocating conversion component includes a shift fork and a first bearing. The shift fork is fixedly mounted on an end of the transmission rod away from the file head. The first bearing is mounted in the fork opening of the shift fork. The outer wall of the first bearing is in contact with the inner wall of the fork opening, and the first bearing is sleeved on the eccentric shaft.

7. The orthopedic oscillating file according to claim 6, characterized in that: The interface assembly also includes a front shell, a rear shell and an interface shell, one end of the front shell is inserted in the rear shell, the interface shell is located in the rear shell, the ends of the transmission rod and the support sleeve away from the file head are both inserted in the front shell, and the input shaft is inserted in the interface shell.

8. The orthopedic oscillating file according to claim 7, characterized in that: The front outer shell has a first step hole inside, and the rear outer shell is also provided with a spiral water cooling jacket, one end of the spiral water cooling jacket is sleeved on the front outer shell, and the other end is sleeved on the interface shell. The outer wall of the spiral water cooling jacket has a water injection channel, and the water injection channel is connected with the first step hole. The support sleeve is an internally hollow tubular structure, and the transmission rod also has an internally hollow tubular structure. The water injection channel is connected with the interior of the transmission rod through the first step hole and the interior of the support sleeve. The connecting rod also has an internally hollow tubular structure, and the interior of the connecting rod is connected with the interior of the transmission rod. The connecting rod has a water outlet hole on the outside of the lining rod, and the water outlet hole is connected with the interior of the connecting rod.

9. The orthopedic oscillating file according to claim 8, characterized in that: The shell of the front outer shell has a water injection hole, which is communicated with the first step hole. The interior of the support sleeve has a second step hole, which is communicated with the first step hole. The transmission rod has a water inlet hole at a position corresponding to the second step hole, and the water inlet hole is communicated with the second step hole.

10. The orthopedic oscillating file according to claim 9, characterized in that: A sealing tube is sleeved on one end of the transmission rod away from the file head assembly, a sealing sleeve is sleeved on the sealing tube, one end of the sealing sleeve is sleeved on the transmission rod, and the other end is sleeved on the sealing tube, and the water inlet hole is outside the sealing tube and the sealing sleeve.

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