Abrasive drill handle and abrasive drill device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an abrasive drill handle and an abrasive drill device.The abrasive drill handle is used for being detachably connected with a cutter and driving the cutter, the front end of the abrasive drill handle is detachably connected with a supporting accessory with a cutter supporting channel, and the abrasive drill handle comprises an installation sleeve, an abrasive drill rod and an abrasive drill rod, the power output shaft is coaxially arranged in the mounting sleeve and can rotate around the axis of the power output shaft, and a tool containing cavity used for allowing a tool to be inserted therein is formed in the power output shaft in the axial direction; the lock sleeve is arranged outside the mounting sleeve in a matched and sleeving manner and can operably rotate around the axis of the mounting sleeve, and the rotating position of the lock sleeve comprises a locking position; the lock sleeve is used for locking the cutter inserted into the cutter containing cavity and the supporting accessory inserted into the front end of the mounting sleeve when rotating to the locking position. According to the utility model, the locking actions of the cutter and the supporting accessory are integrated together, the connection is reliable, the assembly efficiency is improved, the operation is quicker and more convenient, and the risk that the supporting accessory or the cutter is separated from the handle is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical instruments, especially relates to a drill handle and drill device. BACKGROUND

[0002] The medical drill handle is connected with and drives the matched cutter (drill head) to rotate, so as to realize the cutting, grinding and repairing operation on human tissues.

[0003] The front end of some medical drill handles is detachably connected with a supporting accessory through a locking mechanism, the supporting accessory has a cutter supporting channel, the supporting accessory supports the cutter, the cutter is connected with the drill handle after penetrating through the cutter supporting channel, and the cutter is locked on the drill handle through another locking mechanism on the drill handle. UTILITARY MODEL

[0004] In view of the above-mentioned deficiencies of the prior art, the utility model aims to provide a drill handle and drill device to avoid the situation that the cutter and the supporting accessory are not locked at the same time due to misoperation during the operation, and to improve the safety of the operation process.

[0005] To achieve the above-mentioned purposes and other related purposes, the utility model technical scheme is as follows:

[0006] A drill handle is used for detachable connection with a cutter and driving the cutter, the front end of the drill handle is detachably connected with a supporting accessory having a cutter supporting channel, and the drill handle comprises:

[0007] A mounting sleeve is used for splicing with the supporting accessory;

[0008] A power output shaft is coaxially arranged in the mounting sleeve and can rotate around its axis, an internal cutter accommodating cavity for inserting the cutter is arranged in the power output shaft along the axial direction, and the cutter accommodating cavity is used for connecting the cutter supporting channel;

[0009] A lock sleeve is coaxially arranged outside the mounting sleeve and can be operated to rotate around the axis of the mounting sleeve, and the rotation position of the lock sleeve comprises a locking position;

[0010] When the lock sleeve is rotated to the locking position, the cutter inserted in the cutter accommodating cavity and the supporting accessory inserted in the front end of the mounting sleeve are locked at the same time.

[0011] Optionally, the rotational position of the locking sleeve also includes an unlocked position. When the locking sleeve is in the unlocked position, the locking sleeve simultaneously unlocks the tool inserted into the tool receiving cavity and the support accessory inserted into the front end of the mounting sleeve.

[0012] Optionally, the drill handle further includes:

[0013] A tool locking element is movably disposed on the power output shaft to lock or unlock the tool inserted into the tool receiving cavity;

[0014] A sliding sleeve is movably fitted outside the power output shaft, and a transmission structure is provided between the sliding sleeve and the locking sleeve for converting the rotational motion of the locking sleeve into the linear motion of the tool locking member;

[0015] When the locking sleeve rotates from the unlocked position to the locked position, the sliding sleeve moves along the first axial direction and pushes the tool locking member to move along the locking path and lock the tool inserted in the tool receiving cavity; when the locking sleeve rotates from the locked position to the unlocked position, the sliding sleeve moves in the opposite direction of the first axial direction to avoid the path of the tool locking member to unlock the tool.

[0016] Optionally, the outer wall of the power output shaft is provided with a locking member mounting hole that communicates with the tool receiving cavity. The tool locking member moves along the axial direction of the locking member mounting hole to partially enter the tool receiving cavity and embed into the locking groove opened on the outer wall of the tool, or to completely exit the tool receiving cavity to unlock the tool inserted in the tool receiving cavity.

[0017] Optionally, the tool locking member is a movable sleeve movably fitted inside the power output shaft, the tool receiving cavity is formed inside the movable sleeve, and the front end of the power output shaft has a plurality of elastic clamping arms distributed in the circumferential direction. The elastic clamping arms have a conical or inclined surface for the tool locking member to push. When the tool locking member moves in the axial direction, the elastic clamping arms are pushed and deformed by the tool locking member and clamp the tool in the tool receiving cavity.

[0018] Optionally, the transmission structure includes:

[0019] The sliding sleeve elastic element is used to apply an elastic force along the first axial direction to the sliding sleeve so that the position of the sliding sleeve is maintained in the normal position. When the sliding sleeve is in the normal position, the tool locking element locks the tool inserted into the tool receiving cavity.

[0020] A push sleeve is fitted outside the power output shaft. The push sleeve is used to abut against the sliding sleeve to apply a force to the sliding sleeve opposite to the first axial direction. When the push sleeve moves in the opposite direction of the first axial direction against the elastic force, it pushes the sliding sleeve away from the normal position and unlocks the tool inserted in the tool receiving cavity.

[0021] The power transmission components cooperate with the locking sleeve, mounting sleeve, and push sleeve respectively to convert the rotational motion of the locking sleeve into the axial motion of the sliding sleeve.

[0022] Optionally, the inner wall of the locking sleeve is provided with a guide groove extending along its own axial direction, and the peripheral side wall of the mounting sleeve is provided with a spiral groove penetrating its own wall thickness. The spiral groove is a cylindrical spiral groove, and the outer peripheral wall of the push sleeve is provided with a limiting ring groove along the circumferential direction. The power transmission component is located in the guide groove, the spiral groove and the limiting ring groove simultaneously.

[0023] Optionally, the mounting sleeve is provided with a limiting surface for limiting the insertion depth of the support accessory, and the mounting sleeve is also provided with a first circumferential limiting part, which is used to cooperate with the second circumferential limiting part of the support accessory to circumferentially limit the support accessory; the front end of the locking sleeve is provided with a first axial limiting part;

[0024] When the locking sleeve is in the locked position and locks the support accessory, the first axial limiting portion and the second axial limiting portion of the support accessory overlap at least partially in the circumferential direction and face each other to prevent the support accessory from detaching from the mounting sleeve; when the locking sleeve is in the unlocked position, the first axial limiting portion and the second axial limiting portion are offset in the circumferential direction so that the support accessory can axially detach from or be inserted into the mounting sleeve.

[0025] Optionally, the locking sleeve is provided with a first insertion cavity for inserting the support accessory, and the first axial limiting part protrudes from the cavity wall of the first insertion cavity to be adapted to the second axial limiting part protruding from the outer wall of the support accessory;

[0026] or,

[0027] The locking sleeve is used to insert into the second insertion cavity of the support accessory. The first axial limiting part protrudes from the outer wall of the locking sleeve to adapt to the second axial limiting part protruding from the cavity wall of the second insertion cavity.

[0028] Optionally, the locking sleeve and the mounting sleeve have an installation gap for inserting a support accessory, the installation gap having a forward-facing opening, the first circumferential limiting portion being disposed on the outer wall of the mounting sleeve, and the first axial limiting portion being disposed on the inner wall of the locking sleeve.

[0029] Based on the same concept, this application also provides a grinding device, including a matching grinding handle and a support accessory, wherein the grinding handle is the grinding handle as described above.

[0030] Optionally, the support accessory includes a support sleeve, which is connected to the mounting sleeve and the locking sleeve respectively when the locking sleeve simultaneously locks the cutting tool and the support accessory.

[0031] As described above, the drill handle and drill grinding device of this utility model have the following beneficial effects:

[0032] By rotating the locking sleeve to the locked position, the cutting tool and support accessories can be locked simultaneously. This integrates the individual locking actions of the cutting tool and support accessories, preventing situations where the cutting tool and support accessories fail to lock simultaneously during surgery due to misoperation of the drill handle, thus improving surgical safety. Furthermore, the simultaneous locking of the cutting tool and support accessories via the locking sleeve is simple and quick to operate. Attached Figure Description

[0033] Figure 1 This is an exploded view of the drill handle, support accessories, and cutting tool according to an embodiment of the present utility model.

[0034] Figure 2 This is a schematic diagram of the structure of the grinding and drilling device according to an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of the assembly structure of the drill handle and the support sleeve according to an embodiment of the present utility model;

[0036] Figure 4 This is a cross-sectional view of the assembly of the drill handle, support accessories, and cutting tool in an embodiment of this utility model;

[0037] Figure 5 This is a cross-sectional view of the drill handle in an embodiment of this utility model;

[0038] Figure 6 This is a partial structural cross-sectional view of the drill handle in an embodiment of this utility model;

[0039] Figure 7 This is a partial structural diagram of the drill handle in an embodiment of the present invention (excluding the locking sleeve);

[0040] Figure 8 This is a schematic diagram of the structure of the mounting sleeve in an embodiment of this utility model;

[0041] Figure 9 This is a cross-sectional view of the power output shaft in an embodiment of the present invention. Figure 1 ;

[0042] Figure 10This is a cross-sectional view of the power output shaft in an embodiment of the present invention. Figure 2 (AA direction);

[0043] Figure 11 This is a schematic diagram of the lock sleeve in an embodiment of the present utility model;

[0044] Figure 12 This is a cross-sectional view of the lock sleeve in an embodiment of this utility model;

[0045] Figure 13 This is a schematic diagram of the push sleeve structure in an embodiment of this utility model;

[0046] Figure 14 This is a schematic diagram of the tool structure in an embodiment of the present utility model. Figure 1 ;

[0047] Figure 15 This is a schematic diagram of the tool structure in an embodiment of the present utility model. Figure 2 ;

[0048] Figure 16 This is a schematic diagram of the support sleeve in an embodiment of the present utility model;

[0049] Figure 17 This is a cross-sectional view (BB direction) of the support sleeve in an embodiment of this utility model.

[0050] Explanation of reference numerals in the attached figures

[0051] 100-Drill handle;

[0052] 11-Mounting sleeve; 111-Helical groove; 112-First circumferential limiting part; 113-Limiting surface;

[0053] 12-Power take-off shaft; 121-Tool receiving cavity; 122-Locking component mounting hole; 123-Tool positioning hole;

[0054] 13-Locking sleeve; 131-Guide groove; 132-First axial limiting part;

[0055] 14-Sliding sleeve;

[0056] 15-Push sleeve; 151-Limiting ring groove;

[0057] 16-Elastic sleeve;

[0058] 17-Tool locking component; 18-Power transmission component; 19-Tool positioning component;

[0059] 20 - First bearing; 21 - Second bearing;

[0060] 22-Sliding sleeve elastic element; 23-Push sleeve elastic element;

[0061] 24-Locking threaded sleeve; 25-Connecting threaded sleeve;

[0062] 200 - Cutting tool; 210 - Locking groove; 220 - Power unit;

[0063] 300 - Support accessory; 310 - Support sleeve; 311 - Second circumferential limiting part; 312 - Second axial limiting part; 312a - Insertion notch; 313 - Tool support channel. Detailed Implementation

[0064] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0065] It should be noted that the illustrations provided in this embodiment are merely schematic representations of the basic concept of this utility model. Therefore, the illustrations only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to assist those skilled in the art in understanding and reading the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0066] In the descriptions of the following embodiments, "axial direction" refers to the axial direction of the entire drill handle; in the descriptions of the following embodiments, the directional terms "far end" and "proximal end" are relative directions, with "far end" referring to the direction of the drill bit that is axially closer to the tool and "proximal end" referring to the direction of the drill bit that is axially farther away from the tool.

[0067] Please combine Figures 1 to 5As shown, this utility model provides a drill handle 100, which is detachably connected to and drives a tool 200 to rotate. The tool is a drill. The front end of the drill handle 100 is detachably connected to a support accessory 300 having a tool support channel 313. The drill handle 100 includes: a mounting sleeve 11, a power output shaft 12, and a locking sleeve 13. The mounting sleeve 11 is used to insert into the support accessory 300. The power output shaft 12 is coaxially disposed within the mounting sleeve 11 and can rotate around its own axis. The mounting sleeve 11 has an axially arranged tool receiving cavity 121 for inserting a tool 200, which is connected to the tool support channel 313. The locking sleeve 13 is fitted over the mounting sleeve 11 and is operably rotatable about the axis of the mounting sleeve 11. The axial position of the locking sleeve 13 and the mounting sleeve 11 is relatively fixed. The rotation position of the locking sleeve 13 includes a locked position. When the locking sleeve 13 is rotated to the locked position, it simultaneously locks the tool 200 inserted in the tool receiving cavity 121 and the support accessory 300 inserted at the front end of the mounting sleeve 11.

[0068] Specifically, the support attachment 300 and the cutting tool 200 can be detachably connected to the drill handle 100. The support attachment 300 has an axially extending cutting tool support channel 313 inside. The distal end of the mounting sleeve 11 is inserted into the support attachment 300. In this example, the distal end of the mounting sleeve 11 is inserted into the cutting tool support channel 313 of the support attachment 300 (in other examples, the support attachment 300 can also be inserted into the mounting sleeve 11). The cutting tool support channel 313 of the support attachment 300 communicates with the cutting tool receiving cavity 121 of the power output shaft 12. The cutting tool 200 can pass through the cutting tool support channel 313 of the support attachment 300 and be inserted into the cutting tool receiving cavity 121 of the power output shaft 12. When the cutting tool 200 is locked in the power output shaft 12, it can rotate synchronously with the power output shaft 12. The implementation of the cutting tool support channel 313 is not limited to the attachment. Figure 4 In the case of the implementation method, any method in the prior art can also be adopted.

[0069] When the locking sleeve 13 is rotated to the locked position, the tool 200 is connected to the power output shaft 12, and the support accessory 300 is connected to the mounting sleeve 11 and the locking sleeve 13 respectively, thus locking the tool 200 and the support accessory 300 to the drill handle 100. In this way, by rotating the locking sleeve 13, the locking actions of the tool 200 and the support accessory 300 are integrated together, avoiding the situation where the tool 200 and the support accessory 300 are not locked simultaneously during surgery due to misoperation of the drill handle, which is beneficial to improving surgical safety; furthermore, the simultaneous locking of the tool 200 and the support accessory 300 by the locking sleeve 13 is simple and quick to operate.

[0070] In some embodiments, the rotational position of the locking sleeve 13 also includes an unlocked position. When the locking sleeve 13 is in the unlocked position, it simultaneously unlocks the tool 200 inserted into the tool receiving cavity 121 and the support accessory 300 inserted into the front end of the mounting sleeve 11. Specifically, when the locking sleeve 13 is rotated to the unlocked position, the tool 200 is unlocked from the power output shaft 12, and the support accessory 300 is unlocked from both the mounting sleeve 11 and the locking sleeve 13, thus unlocking both the tool 200 and the support accessory 300 from the drill handle 100. In this way, by rotating the locking sleeve 13 to the unlocked position, both the tool 200 and the support accessory 300 are simultaneously unlocked, making the operation quick and convenient.

[0071] It is worth mentioning that the "lock sleeve 13 is used to rotate to the locking position" can be implemented by rotating the lock sleeve 13 from the unlocking position to the locking position. In actual implementation, it is also possible that the lock sleeve 13 can be rotated to the locking position from other positions besides the unlocking position.

[0072] For ease of understanding, the following will explain how the "locking sleeve 13 locks the tool 200 inserted in the tool receiving cavity 121 when it is rotated to the locking position":

[0073] See Figure 5 In the above embodiment, the drill handle 100 further includes: a tool locking member 17 and a sliding sleeve 14, wherein the tool locking member 17 is movably disposed on the power output shaft 12 to lock or unlock the tool 200 inserted in the tool receiving cavity 121; the sliding sleeve 14 is movably sleeved outside the power output shaft 12, and a transmission structure is provided between the sliding sleeve 14 and the locking sleeve 13 for converting the rotational motion of the locking sleeve 13 into the linear motion of the tool locking member 17; when the locking sleeve 13 rotates from the unlocked position to the locked position, the sliding sleeve 14 moves along the first axial direction and pushes the tool locking member 17 to move along the locking path and lock the tool 200 inserted in the tool receiving cavity 121; when the locking sleeve 13 rotates from the locked position to the unlocked position, the sliding sleeve 14 moves in the opposite direction of the first axial direction to avoid the path of the tool locking member 17 unlocking the tool 200.

[0074] Specifically, the sliding sleeve 14 is slidably fitted outside the power output shaft 12 and is located inside the mounting sleeve 11. Rotating the locking sleeve 13 allows the sliding sleeve 14 to move axially. When the locking sleeve 13 is rotated to the locked position, the sliding sleeve 14 can move along the first axial direction and push the tool locking member 17 to move along the locking path to lock the tool 200. In this example, the first axial direction is the direction towards the proximal end of the power output shaft 12. When the locking sleeve 13 is rotated from the locked position to the unlocked position, the sliding sleeve 14 can move in the opposite direction to the first axial direction, allowing the sliding sleeve 14 to avoid the path of the tool locking member 17 to unlock the tool 200. Without the obstruction of the sliding sleeve 14, the locking member 17 can unlock the tool along the path of unlocking the tool 200, thereby allowing the tool to be dislodged from the tool receiving cavity 121 and realizing the unlocking of the tool 200.

[0075] For ease of understanding, it can be assumed that the path of the locking member 17 to unlock the tool 200 and the locking path of the locking tool 200 can overlap but be in opposite directions.

[0076] See Figure 5 and Figure 6 In some embodiments, the outer wall of the power output shaft 12 is provided with a locking member mounting hole 122 communicating with the tool receiving cavity 121. The tool locking member 17 moves along the axial direction of the locking member mounting hole 122 to partially enter the tool receiving cavity 121 and embed into the locking groove 210 opened on the outer wall of the tool 200 (see...). Figure 14 and Figure 15 Alternatively, the tool 200 inserted into the tool receiving cavity 121 can be completely removed from the tool receiving cavity 121 to unlock it. Specifically, a locking groove 210 is provided on the outer wall of the tail of the tool 200 along its circumference, and a tool locking member 17 is movably embedded in the locking groove 210. The tool locking member 17 can be a steel ball, which is not prone to jamming during locking or unlocking. Of course, the tool locking member 17 can also be a cylindrical locking member or a locking member of other shapes, as long as it can move along the locking member mounting hole 122 to enter and exit the tool receiving cavity 121.

[0077] When the locking sleeve 13 is rotated to the locked position, the tool locking member 17 can move and at least partially enter the tool receiving cavity 121 and be embedded in the locking groove 210, and the tool 200 is axially locked and cannot be pulled out; when the locking sleeve 13 is rotated to the unlocked position, the tool locking member 17 can be disengaged from the tool receiving cavity 121, so that the tool 200 is unlocked, and the tool 200 can move axially and can be freely disengaged.

[0078] In this example, two locking member mounting holes 122 are symmetrically formed radially on the peripheral sidewall of the power output shaft 12. The locking member mounting holes 122 communicate with the tool receiving cavity 121 inside the power output shaft 12. The tool locking member 17 moves axially along the locking member mounting holes 122 (i.e., radially along the power output shaft 12). Rotating the locking sleeve 13 allows the sliding sleeve 14 to move axially under the transmission action of the transmission structure. When the sliding sleeve 14 moves to cover the locking member mounting holes 122, it pushes the tool locking member 17 into the tool receiving cavity 121 and embeds it into the locking groove 210, at which point the tool 200 is locked. When the sliding sleeve 14 moves to expose the locking member mounting holes 122, the tool locking member 17 can move radially and exit the locking groove 210 and the tool receiving cavity 121, at which point the tool 200 can be freely inserted or removed. By rotating the locking sleeve 13 to the locked or unlocked position, the sliding sleeve 14 can be made to slide back and forth on the power output shaft 12 to lock or unlock the tool 200.

[0079] In other embodiments, the tool locking member 17 is a movable sleeve (not shown) movably fitted inside the power output shaft 12, and the tool receiving cavity 121 is formed inside the movable sleeve. The front end of the power output shaft 12 has a plurality of elastic clamping arms distributed in the circumferential direction. The elastic clamping arms have a conical or inclined surface for the tool locking member 17 to push against. When the tool locking member 17 moves in the axial direction, the elastic clamping arms are pushed and deformed by the tool locking member 17 and clamp the tool 200 in the tool receiving cavity 121. Specifically, the tool locking member 17 is a movable sleeve fitted inside the power output shaft 12, and the elastic clamping wall at the front end of the power output shaft 12 can converge towards the center of the power output shaft 12 when compressed. Rotating the locking sleeve 13 allows the sliding sleeve 14 to move axially under the transmission action of the transmission structure. When the locking sleeve 13 is rotated to the locked position, the tool locking member 17 moves in the direction close to the far end of the power output shaft 12, thereby causing the elastic clamping arm to be pushed and deformed and clamp the tool 200. When the locking sleeve 13 is rotated to the unlocked position, the tool locking member 17 moves in the direction away from the far end of the power output shaft 12, thereby releasing the force of the elastic clamping arm and releasing the tool 200.

[0080] See Figure 5 and Figure 6The transmission structure includes: a sliding sleeve elastic element 22, a push sleeve 15, and a power transmission element 18. The sliding sleeve elastic element 22 applies an elastic force along a first axial direction to the sliding sleeve 14 to maintain its normal position. When the sliding sleeve 14 is in this normal position, the tool locking element 17 locks the tool 200 inserted into the tool receiving cavity 121. The push sleeve 15 is sleeved outside the power output shaft 12 and abuts against the sliding sleeve 14 to apply a force opposite to the first axial direction. When the push sleeve 15 overcomes the elastic force and moves in the opposite direction of the first axial direction, it pushes the sliding sleeve 14 away from its normal position, unlocking the tool 200 inserted into the tool receiving cavity 121. Specifically, Figure 5 , Figure 6 In the example, the power output shaft 12 is rotatably disposed within the mounting sleeve 11. The sliding sleeve elastic element 22 is a spring, disc spring, or other type of compression spring sleeved outside the power output shaft 12, and both ends of the sliding sleeve elastic element 22 abut against the shoulder of the power output shaft 12 and the sliding sleeve 14, respectively. The locking sleeve 13 is rotatably sleeved outside the mounting sleeve 11, and the push sleeve 15 is located inside the mounting sleeve 11. The push sleeve 15 is sleeved outside the power output shaft 12 and is used to abut against the sliding sleeve 14. The circumferential rotation of the locking sleeve 13 is converted into the axial movement of the push sleeve 15 by the transmission action of the power transmission element 18.

[0081] When the locking sleeve 13 is rotated to the locked position, the elastic force of the sliding sleeve elastic element 22 pushes the sliding sleeve 14 to move along the first axial direction to reach the normal position, thereby causing the sliding sleeve 14 to push the tool locking element 17 to lock the tool 200. When the locking sleeve 13 is rotated to the unlocked position, the push sleeve 15 can move in the opposite direction of the first axial direction, and the sliding sleeve 14 also moves in the opposite direction of the first axial direction under the action of the push sleeve 15, leaving the normal position, thereby causing the sliding sleeve 14 to avoid the path of the tool locking element 17 to unlock the tool 200, thus unlocking the tool 200. In this method, the elastic force applied by the sliding sleeve elastic element 22 can keep the tool locking element 17 in a locked state. To unlock the tool 200, this elastic force needs to be overcome, which is beneficial for the tool 200 to remain locked during the operation, thereby improving the safety of the operation.

[0082] Please continue reading Figure 5 , Figure 6 The transmission structure also includes a power transmission component 18, which cooperates with the locking sleeve 13, the mounting sleeve 11, and the push sleeve 15 to convert the rotational motion of the locking sleeve 13 into the axial motion of the sliding sleeve 14. The following embodiments illustrate how the rotational motion of the locking sleeve 13 is converted into the axial motion of the sliding sleeve 14:

[0083] With the aforementioned sliding sleeve elastic element 22 and push sleeve 15 provided, the inner wall of the locking sleeve 13 is provided with a guide groove 131 extending along its own axial direction (see [reference]). Figure 11 and Figure 12 The mounting sleeve 11 has a spiral groove 111 extending through its own wall thickness on its peripheral sidewall (see reference). Figure 8 The spiral groove 111 is a cylindrical spiral groove, meaning that the axial direction of the spiral groove 111 overlaps with the axial direction of the mounting sleeve 11. Figure 8 In the example, the spiral groove 111 covers a range of less than 180° in the circumferential direction, so the spiral groove 111 looks roughly like an inclined groove relative to the axial direction of the mounting sleeve 11; a limiting annular groove 151 is provided circumferentially on the outer peripheral wall of the push sleeve 15 (see reference). Figure 13 The power transmission component 18 is simultaneously located within the guide groove 131, the spiral groove 111, and the limiting ring groove 151 (see reference). Figure 7 ).

[0084] Specifically, the locking sleeve 13 is fitted outside the mounting sleeve 11, and the push sleeve 15 is located inside the mounting sleeve 11. In this embodiment, two guide grooves 131 are symmetrically arranged on the locking sleeve 13. The guide grooves 131 extend along the axial direction of the locking sleeve 13, and the guide grooves 131 are arc-shaped along the cross section perpendicular to the locking sleeve 13. The opening of the guide grooves 131 communicates with the interior of the locking sleeve 13. The guide grooves 131 allow the power transmission component 18 to move axially inside the locking sleeve 13. Two spiral grooves 111 are also correspondingly arranged on the mounting sleeve 11. When the locking sleeve 13 rotates relative to the mounting sleeve 11, the power transmission component 18 located in the spiral grooves 111 will gradually change along the spiral path and can convert the circumferential rotation of the locking sleeve 13 into the axial movement of the push sleeve 15. The limiting ring groove 151 is arranged circumferentially at the rear end of the push sleeve 15, and the front end of the push sleeve 15 is close to the sliding sleeve 14. Because the spiral groove 111 extends in a spiral shape, when the locking sleeve 13 is rotated, the power transmission component 18 moves along the spiral groove 111 with the rotation of the locking sleeve 13, and under the action of the guide groove 131 of the mounting sleeve 11, it is converted into axial movement along the mounting sleeve 11. Furthermore, since the power transmission component 18 is also within the limiting ring groove 151 of the push sleeve 15, it can synchronously drive the push sleeve 15 to move axially on the power output shaft 12. The power transmission component 18 is simultaneously located within the guide groove 131, the spiral groove 111, and the limiting ring groove 151. This multiple constraint and guiding mechanism makes the locking process more precise and reliable. Through synergistic action, they jointly realize the conversion of the rotation of the locking sleeve 13 into the movement of the push sleeve 15.

[0085] See Figure 6Understandably, the distal and proximal ends of the power output shaft 12 are respectively housed within the mounting sleeve 11 via a first bearing 20 and a second bearing 21, with the sliding sleeve 14 and push sleeve 15 located between the first bearing 20 and the second bearing 21. Specifically, the first bearing 20 is fitted onto the distal end of the power output shaft 12, and the second bearing 21 is fitted onto the rear end of the power output shaft 12. The power output shaft 12 is rotatably connected to the mounting sleeve 11 via the first bearing 20 and the second bearing 21, ensuring stable support and accurate positioning of the power output shaft 12 within the mounting sleeve 11.

[0086] Continue reading Figure 6 The transmission structure further includes a push sleeve elastic element 23, which applies a force along the first axial direction to the push sleeve 15. The push sleeve elastic element 23 is sleeved on the outside of the sliding sleeve elastic element 22, and its two ends abut against the first bearing 20 and the push sleeve 15, respectively. The push sleeve elastic element 23 ensures that, without external force, the end of the push sleeve 15 facing away from the push sleeve elastic element 23 is always in contact with the outer ring of the second bearing 21. When the power output shaft 12 rotates, the push sleeve elastic element 23 and the push sleeve 15 remain stationary. Simultaneously, the push sleeve elastic element 23 prevents the push sleeve 15 from shifting when the tool 200 is locked, which helps reduce noise and improves reliability.

[0087] Additionally, see Figure 6 , Figure 9 and Figure 10 A tool positioning hole 123 is radially formed on the peripheral sidewall of the power output shaft 12. The tool positioning hole 123 communicates with the tool receiving cavity 121 inside the power output shaft 12. In this example, two tool positioning holes 123 are symmetrically arranged on the power output shaft 12, and the center lines of the two tool positioning holes 123 are perpendicular to the center lines of the two locking member mounting holes 122. A tool positioning member 19 is provided in each tool positioning hole 123, which is used to abut against the power part 220 at the tail of the tool 200 when the tool 200 is inserted into the tool receiving cavity 121 (see reference). Figure 14 and Figure 15 The power unit 220 has a flat rectangular structure. Two symmetrically arranged tool positioning members 19 abut against the power unit 220, which on the one hand restricts the circumferential rotation of the tool 200, and on the other hand facilitates the transmission of torque to the tool 200 by the power output shaft 12. Thus, the tool 200 is circumferentially locked by the tool positioning members 19 and axially locked by the tool locking members 17, thereby achieving complete locking of the tool 200.

[0088] See Figure 6It should be noted that an elastic sleeve 16 is fixedly sleeved on the power output shaft 12. The elastic sleeve 16 is sleeved between the power output shaft 12 and the push sleeve 15, and partially blocks the tool positioning hole 123. The elastic sleeve 16 restricts the movement path of the tool positioning member 19 and prevents the tool positioning member 19 from coming out of the locking member mounting hole 122.

[0089] There are multiple ways to achieve the goal of "the axial position of the locking sleeve 13 and the mounting sleeve 11 being relatively fixed". Figure 5 In this embodiment, the drill handle 100 further includes a locking sleeve 24 and a connecting sleeve 25. The locking sleeve 24 is fitted onto the mounting sleeve 11 and axially abuts against the interior of the locking sleeve 13. The connecting sleeve 25 is fitted onto the mounting sleeve 11 and abuts against the rear end of the locking sleeve 13. The locking sleeve 24 and the connecting sleeve 25 together axially limit the locking sleeve 13. Specifically, the locking sleeve 24 is located near the front end of the mounting sleeve 11 and is threadedly connected to the mounting sleeve 11. The connecting sleeve 25 is located at the rear end of the locking sleeve 13 and is threadedly connected to the mounting sleeve 11. The locking sleeve 24 and the connecting sleeve 25 together restrict the axial movement of the locking sleeve 13, but allow the locking sleeve 13 to rotate axially around the mounting sleeve 11. This helps the locking sleeve 13 maintain its predetermined position and stability during installation and use, thereby ensuring the precise operation and reliability of the drill handle 100.

[0090] The above explains how the drill handle 100 locks the tool 200 by rotating the locking sleeve 13. The following explains how the drill handle 100 locks the support accessory 300 by rotating the locking sleeve:

[0091] See Figure 7 , Figure 8 , Figure 16 and Figure 17 In some embodiments, the mounting sleeve 11 is provided with a limiting surface 113 for limiting the insertion depth of the support attachment 300. The mounting sleeve 11 is also provided with a first circumferential limiting portion 112, which cooperates with a second circumferential limiting portion 311 of the support attachment 300 to circumferentially limit the support attachment 300. The front end of the locking sleeve 13 is provided with a first axial limiting portion 132. When the locking sleeve 13 is in the locked position to lock the support attachment 300, the first axial limiting portion 132 and the second axial limiting portion 312 of the support attachment 300 overlap at least partially in the circumferential direction and face each other to prevent the support attachment 300 from detaching from the mounting sleeve 11. When the locking sleeve 13 is in the unlocked position, the first axial limiting portion 132 and the second axial limiting portion 312 are offset in the circumferential direction so that the support attachment 300 can axially detach from or insert into the mounting sleeve 11.

[0092] Specifically, when the mounting sleeve 11 is inserted into the support accessory 300, a limiting surface 113 is provided on the mounting sleeve 11 to limit the extreme position of the mounting sleeve 11 and the support accessory 300 during insertion. The first circumferential limiting part 112 provided on the mounting sleeve 11 is adapted to the second circumferential limiting part 311 provided on the support accessory 300 to circumferentially limit the support accessory 300. Here, "circumferential limiting" refers to preventing the support accessory 300 from rotating relative to the mounting sleeve 11. The circumferential limiting method can be, for example, a key and keyway fit, a flat rectangular structure fit, a spline structure fit, etc. In this embodiment, the first circumferential limiting part 112 and the second circumferential limiting part 311 adopt a flat rectangular structure fit, that is, the first circumferential limiting part 112 and the second circumferential limiting part 311 adopt mutually adapted flat rectangular structures.

[0093] Rotating the locking sleeve 13 to the locked position allows the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the support attachment 300 to at least partially overlap and face each other in the circumferential direction, thereby preventing the support attachment 300 from disengaging from the mounting sleeve 11 and thus locking the support attachment 300 to the drill handle 100; or, rotating the locking sleeve 13 to the unlocked position allows the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the support attachment 300 to be offset in the circumferential direction, so that the support attachment 300 can axially disengage from or be inserted into the mounting sleeve 11, thereby unlocking the support attachment 300 from the drill handle 100.

[0094] More specifically, of the first axial limiting portion 132 and the second axial limiting portion 312, one limiting portion is an annular limiting portion with a insertion notch 312a. The insertion notch 312a extends axially from one side of the annular limiting portion to the other side. When the locking sleeve 13 is in the unlocked position, the other limiting portion can pass through the insertion notch 312a axially, so that the drill handle 100 and the support accessory 300 can be disengaged or inserted. In this example, the first axial limiting portion 132 of the locking sleeve 13 is a protrusion, and the second axial limiting portion 312 of the support accessory 300 is an annular limiting portion with a insertion notch 312a. When the locking sleeve 13 is in the unlocked position, the first axial limiting portion 132 of the locking sleeve 13 is aligned with the insertion notch 312a and can pass through the insertion notch 312a of the second axial limiting portion 312 axially, so that the support accessory 300 can be disengaged or inserted with the mounting sleeve 11. When the locking sleeve 13 is rotated to the locked position, the first axial limiting part 132 of the locking sleeve 13 can be screwed into the annular limiting part, and the support attachment 300 is restricted from axial movement and cannot be dislodged.

[0095] In the above embodiments, the locking sleeve 13 is provided with a first insertion cavity for inserting the support attachment 300, and the first axial limiting portion 132 protrudes from the cavity wall of the first insertion cavity to be adapted to the second axial limiting portion 312 protruding from the outer wall of the support attachment 300; or, the locking sleeve 13 is used to insert into the second insertion cavity of the support attachment 300, and the first axial limiting portion 132 protrudes from the outer wall of the locking sleeve 13 to be adapted to the second axial limiting portion 312 protruding from the cavity wall of the second insertion cavity. Specifically, the locking sleeve 13 and the support accessory 300 can be connected by inserting the tail end of the support accessory 300 into the first insertion cavity of the locking sleeve 13, with the first axial limiting part 132 provided on the inner wall of the locking sleeve 13 and the second axial limiting part 312 provided on the outer wall of the support accessory 300 being adapted; or, the locking sleeve 13 and the support accessory 300 can be connected by inserting the front end of the locking sleeve 13 into the second insertion cavity of the support accessory 300, with the first axial limiting part 132 provided on the outer wall of the locking sleeve 13 and the second axial limiting part 312 provided on the inner wall of the support accessory 300 being adapted.

[0096] Understandably, there is an installation gap between the locking sleeve 13 and the mounting sleeve 11 for inserting the support accessory 300. The installation gap has a forward-facing opening. The first circumferential limiting portion 112 is located on the outer wall of the mounting sleeve 11, and the first axial limiting portion 132 is located on the inner wall of the locking sleeve 13. Specifically, the first circumferential limiting portion 112 is located on the outer wall of the mounting sleeve 11 to adapt to the second circumferential limiting portion 311 located on the inner wall of the support sleeve 310; the first axial limiting portion 132 is located on the inner wall of the locking sleeve 13 to adapt to the second axial limiting portion 312 located on the outer wall of the support sleeve 310. There is an installation gap between the inner wall of the front end of the locking sleeve 13 and the outer circumferential wall of the mounting sleeve 11. When the support accessory 300 is connected to the drill handle 100, the tail end of the support accessory 300 is at least partially inserted into the installation gap. This not only provides sufficient insertion space for the tail end of the support accessory 300, but also ensures smooth rotation of the locking sleeve 13, avoiding jamming or damage caused by too small a gap. Moreover, it increases the contact area between the connecting parts, enhances the connection strength between the support accessory 300 and the drill handle 100, and improves the stability of the connection through physical fitting. It also enables the locking sleeve 13 to lock or unlock the support accessory 300 more effectively when rotating.

[0097] Based on the same concept, this application also provides a grinding device, including a matching grinding handle 100 and a support attachment 300, wherein the grinding handle 100 is the grinding handle 100 as described above.

[0098] In some embodiments, the support accessory 300 includes a support sleeve 310, which is connected to the mounting sleeve 11 and the locking sleeve 13 respectively when the locking sleeve 13 simultaneously locks the tool 200 and the support accessory 300.

[0099] In summary, the grinding handle 100 and grinding device provided by this utility model can simultaneously lock the cutting tool 200 and the support accessory 300 by rotating the locking sleeve 13 to the locked position. This integrates the individual locking actions of the cutting tool 200 and the support accessory 300 together, avoiding the situation where the cutting tool and the support accessory fail to lock simultaneously during surgery due to misoperation of the grinding handle, thus improving surgical safety. Furthermore, the simultaneous locking of the cutting tool and the support accessory through the locking sleeve is simple to operate and the operation method is faster and more convenient.

[0100] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A drill handle, the drill handle being detachably connected to and driving a cutting tool, the front end of the drill handle being detachably connected to a support accessory having a tool support channel, characterized in that, The drill handle includes: Mounting sleeve, the mounting sleeve being used for insertion with the support accessory; A power output shaft is coaxially disposed within the mounting sleeve and is capable of rotating about its own axis. The power output shaft has an axially provided tool receiving cavity for inserting a tool, and the tool receiving cavity is used to connect to the tool support channel. A locking sleeve is fitted over the mounting sleeve and is operably rotatable about the axis of the mounting sleeve. The rotational position of the locking sleeve includes a locked position. The locking sleeve is used to simultaneously lock the tool inserted in the tool receiving cavity and the support accessory inserted at the front end of the mounting sleeve when rotated to the locking position.

2. The drill handle according to claim 1, characterized in that, The rotational position of the locking sleeve also includes an unlocked position. When the locking sleeve is in the unlocked position, the locking sleeve simultaneously unlocks the tool inserted in the tool receiving cavity and the support accessory inserted at the front end of the mounting sleeve.

3. The drill handle according to claim 2, characterized in that, The drill handle also includes: A tool locking element is movably disposed on the power output shaft to lock or unlock the tool inserted into the tool receiving cavity; A sliding sleeve is movably fitted outside the power output shaft, and a transmission structure is provided between the sliding sleeve and the locking sleeve for converting the rotational motion of the locking sleeve into the linear motion of the tool locking member; When the locking sleeve rotates from the unlocked position to the locked position, the sliding sleeve moves along the first axial direction and pushes the tool locking member to move along the locking path and lock the tool inserted in the tool receiving cavity; when the locking sleeve rotates from the locked position to the unlocked position, the sliding sleeve moves in the opposite direction of the first axial direction to avoid the path of the tool locking member to unlock the tool.

4. The drill handle according to claim 3, characterized in that, The outer wall of the power output shaft is provided with a locking member mounting hole that communicates with the tool receiving cavity. The tool locking member can move along the axial direction of the locking member mounting hole to partially enter the tool receiving cavity and embed into the locking groove opened on the outer wall of the tool, or to completely exit the tool receiving cavity to unlock the tool inserted in the tool receiving cavity.

5. The drill handle according to claim 3, characterized in that, The tool locking member is a movable sleeve that is movably fitted inside the power output shaft. The tool receiving cavity is formed inside the movable sleeve. The front end of the power output shaft has a plurality of elastic clamping arms distributed in the circumferential direction. The elastic clamping arms have a conical or inclined surface for the tool locking member to push. When the tool locking member moves in the axial direction, the elastic clamping arms are pushed and deformed by the tool locking member and clamp the tool in the tool receiving cavity.

6. The drill handle according to claim 3, characterized in that, The transmission structure includes: The sliding sleeve elastic element is used to apply an elastic force along the first axial direction to the sliding sleeve so that the position of the sliding sleeve is maintained in the normal position. When the sliding sleeve is in the normal position, the tool locking element locks the tool inserted into the tool receiving cavity. A push sleeve is fitted outside the power output shaft. The push sleeve is used to abut against the sliding sleeve to apply a force to the sliding sleeve opposite to the first axial direction. When the push sleeve moves in the opposite direction of the first axial direction against the elastic force, it pushes the sliding sleeve away from the normal position and unlocks the tool inserted in the tool receiving cavity. The power transmission components cooperate with the locking sleeve, mounting sleeve, and push sleeve respectively to convert the rotational motion of the locking sleeve into the axial motion of the push sleeve.

7. The drill handle according to claim 6, characterized in that, The inner wall of the locking sleeve is provided with a guide groove extending along its own axis. The peripheral side wall of the mounting sleeve is provided with a spiral groove penetrating its own wall thickness. The spiral groove is a cylindrical spiral groove. The outer peripheral wall of the push sleeve is provided with a limiting ring groove along the circumferential direction. The power transmission component is located in the guide groove, the spiral groove and the limiting ring groove simultaneously.

8. The drill handle according to any one of claims 2 to 7, characterized in that, The mounting sleeve is provided with a limiting surface for limiting the insertion depth of the support accessory. The mounting sleeve is also provided with a first circumferential limiting part, which is used to cooperate with the second circumferential limiting part of the support accessory to circumferentially limit the support accessory; the front end of the locking sleeve is provided with a first axial limiting part. When the locking sleeve is in the locked position and locks the support accessory, the first axial limiting portion and the second axial limiting portion of the support accessory overlap at least partially in the circumferential direction and face each other to prevent the support accessory from detaching from the mounting sleeve; when the locking sleeve is in the unlocked position, the first axial limiting portion and the second axial limiting portion are offset in the circumferential direction so that the support accessory can axially detach from or be inserted into the mounting sleeve.

9. The drill handle according to claim 8, characterized in that, The locking sleeve is provided with a first insertion cavity for inserting the support accessory, and the first axial limiting part protrudes from the cavity wall of the first insertion cavity to be adapted to the second axial limiting part protruding from the outer wall of the support accessory. or, The locking sleeve is used to insert into the second insertion cavity of the support accessory. The first axial limiting part protrudes from the outer wall of the locking sleeve to adapt to the second axial limiting part protruding from the cavity wall of the second insertion cavity.

10. The drill handle according to claim 9, characterized in that, There is an installation gap between the lock sleeve and the mounting sleeve for inserting a support accessory. The installation gap has a forward-facing opening. The first circumferential limiting portion is provided on the outer wall of the mounting sleeve, and the first axial limiting portion is provided on the inner wall of the lock sleeve.

11. A grinding and drilling device, characterized in that, It includes a compatible drill handle and support accessories, wherein the drill handle is the drill handle according to any one of claims 1-10.

12. The grinding and drilling apparatus according to claim 11, characterized in that, The support accessory includes a support sleeve. When the locking sleeve simultaneously locks the tool and the support accessory, the support sleeve is connected to the mounting sleeve and the locking sleeve respectively.

Images