Abrasive drill handle and abrasive drill device

Abstract

The invention 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 a mounting sleeve, a supporting part and a driving part, 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. The locking actions of the cutter and the supporting accessory are integrated together, connection is reliable, the assembling efficiency is improved, operation is faster and more convenient, and the risk that the supporting accessory or the cutter is disengaged from the handle is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a burr handle and a burr device. Background Art

[0002] The medical drill handle connects and drives the corresponding tool (grinding head) to rotate, thereby achieving operations such as cutting, grinding and repairing human tissue.

[0003] The front end of some medical drill handles is detachably connected to a support attachment through a locking mechanism. The support attachment has a tool support channel. The support attachment supports the tool. The tool passes through the tool support channel and is connected to the drill handle. The tool is locked to the drill handle through another locking mechanism on the drill handle. However, during surgery, the existing drill handle needs to ensure that the two locking mechanisms lock the support attachment and the tool respectively. There is a high possibility of misoperation. The tool may be locked but the support attachment is not locked, or the support attachment is locked but the tool is not locked. There is a risk that the support attachment or the tool will fall out of the handle, which can easily cause surgical accidents. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a drill handle and a drill device to avoid the situation where the tool and the supporting accessory cannot be locked at the same time due to misoperation during surgery, thereby improving the safety of the surgical process.

[0005] To achieve the above objectives and other related objectives, the technical solution of the present invention is as follows:

[0006] A drill grinding handle, the drill grinding handle is used to be detachably connected to a tool and drive the tool, the front end of the drill grinding handle is detachably connected to a support attachment having a tool support channel, and the drill grinding handle comprises:

[0007] A mounting sleeve, the mounting sleeve being used for plugging with the supporting accessory;

[0008] A power output shaft is coaxially arranged in the mounting sleeve and can rotate around its own axis, and a tool accommodating cavity for inserting a tool is axially arranged inside the power output shaft, and the tool accommodating cavity is used to communicate with the tool supporting channel;

[0009] A locking sleeve, which is arranged outside the mounting sleeve and can be operably rotated around the axis of the mounting sleeve, and the rotation position of the locking sleeve includes a locking position;

[0010] The locking sleeve is used to simultaneously lock the tool inserted in the tool accommodating cavity and the supporting accessory inserted in the front end of the mounting sleeve when the locking sleeve is rotated to the locking position.

[0011] Optionally, the rotation position of the locking sleeve further includes an unlocking position. When the locking sleeve is located at the unlocking position, the locking sleeve simultaneously unlocks the tool inserted in the tool accommodating cavity and the supporting accessory inserted at the front end of the mounting sleeve.

[0012] Optionally, the drill handle further comprises:

[0013] A tool locking member, movably disposed on the power output shaft, to lock or unlock the tool inserted in the tool accommodating cavity;

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

[0015] When the locking sleeve rotates from the unlocking position to the locking 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 accommodating cavity; when the locking sleeve rotates from the locking position to the unlocking 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, a locking member mounting hole connected to the tool accommodating cavity is formed on the outer wall of the power output shaft, and the tool locking member moves along the axial direction of the locking member mounting hole to partially enter the tool accommodating cavity and embed into the locking groove formed on the outer wall of the tool, or to completely withdraw from the tool accommodating cavity to unlock the tool inserted in the tool accommodating cavity.

[0017] Optionally, the tool locking member is a movable sleeve movably sleeved in the power output shaft, the tool accommodating cavity is formed in the movable sleeve, the front end of the power output shaft has a plurality of elastic clamping arms distributed along the circumferential direction, the elastic clamping arms have a conical surface or a slope 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 accommodating cavity.

[0018] Optionally, the transmission structure includes:

[0019] a sleeve elastic member, used for applying an elastic force along a first axial direction to the sleeve to keep the sleeve in a normal position, and when the sleeve is in the normal position, the tool locking member locks the tool inserted in the tool accommodating cavity;

[0020] A push sleeve, which is sleeved outside the power output shaft, and is used to resist the sliding sleeve to apply a force opposite to the first axial direction to the sliding sleeve. When the push sleeve overcomes the elastic force and moves in the opposite direction of the first axial direction, it pushes the sliding sleeve to leave the normal position, unlocking the tool inserted in the tool accommodating cavity;

[0021] The power transmission member is matched with the locking sleeve, the mounting sleeve and the pushing 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, the circumferential 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 circumferential wall of the push sleeve is provided with a limiting ring groove along the circumferential direction, and the power transmission component is simultaneously located in the guide groove, the spiral groove and the limiting ring groove.

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

[0024] When the locking sleeve is in the locking position to lock the supporting accessory, the first axial limiting portion and the second axial limiting portion of the supporting accessory at least partially overlap and face each other in the circumferential direction to prevent the supporting accessory from detaching from the mounting sleeve; when the locking sleeve is in the unlocking position, the first axial limiting portion and the second axial limiting portion are staggered in the circumferential direction to enable the supporting accessory to axially detach from or be plugged into the mounting sleeve.

[0025] Optionally, the locking sleeve is provided with a first inserting cavity for inserting the supporting accessory, and the first axial limiting portion is convexly provided on the cavity wall of the first inserting cavity to be matched with a second axial limiting portion convexly provided on the outer wall of the supporting accessory;

[0026] or,

[0027] The locking sleeve is used to be inserted into the second plug-in cavity of the supporting accessory, and the first axial limiting portion is protruded on the outer wall of the locking sleeve to match with the second axial limiting portion protruded on the cavity wall of the second plug-in cavity.

[0028] Optionally, an installation gap is provided between the locking sleeve and the mounting sleeve for inserting a support accessory, the installation gap has an opening facing forward, the first circumferential limit portion is provided on the outer wall of the mounting sleeve, and the first axial limit portion is provided on the inner wall of the locking sleeve.

[0029] Based on the same concept, the present application also provides a drill grinding device, including a matching drill grinding handle and a supporting attachment, wherein the drill grinding handle is the drill grinding handle described above.

[0030] Optionally, the supporting accessory comprises a supporting sleeve, and when the locking sleeve simultaneously locks the tool and the supporting accessory, the supporting sleeve is connected to the mounting sleeve and the locking sleeve respectively.

[0031] As described above, the drill grinding handle and the drill grinding device of the present invention have the following beneficial effects:

[0032] By rotating the locking sleeve to the locking position, the tool and the supporting accessory can be locked at the same time, and the respective locking actions of the tool and the supporting accessory are integrated together, thereby avoiding the situation in which the tool and the supporting accessory fail to be locked at the same time during surgery due to misoperation of the drill handle, which is beneficial to improving surgical safety; and the tool and the supporting accessory are locked at the same time by the locking sleeve, which is simple to operate and the operation method is faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the exploded structure of the drill handle, supporting accessories and tool of an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the structure of a drill grinding device according to an embodiment of the present invention;

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

[0036] Figure 4 It is an assembly cross-sectional view of the drill handle, the supporting attachment and the tool in the embodiment of the present invention;

[0037] Figure 5 is a cross-sectional view of a drill handle in an embodiment of the present invention;

[0038] Figure 6 A partial structural cross-sectional view of a drill handle in an embodiment of the present invention;

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

[0040] Figure 8 It is a structural schematic diagram of the installation sleeve in an embodiment of the present invention;

[0041] Fig. 9 A cross-sectional view of a power output shaft according to an embodiment of the present invention Figure 1 ;

[0042] Fig.10 A cross-sectional view of a power output shaft according to an embodiment of the present invention Figure 2 (AA direction);

[0043] Fig.11 It is a schematic diagram of the structure of the lock sleeve in an embodiment of the present invention;

[0044] Fig.12 is a cross-sectional view of a lock sleeve in an embodiment of the present invention;

[0045] Fig.13 It is a structural schematic diagram of a push sleeve in an embodiment of the present invention;

[0046] Fig.14 The structure of the tool in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0047] Fig.15 The structure of the tool in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0048] Fig.16 It is a schematic diagram of the structure of the support sleeve in an embodiment of the present invention;

[0049] Fig.17 It is a cross-sectional view (BB direction) of the support sleeve in the embodiment of the present invention.

[0050] Description of Reference Numerals

[0051] 100-drill handle;

[0052] 11-mounting sleeve; 111-spiral groove; 112-first circumferential limiting portion; 113-limiting surface;

[0053] 12-power output shaft; 121-tool accommodating cavity; 122-locking member mounting hole; 123-tool positioning hole;

[0054] 13-locking sleeve; 131-guide groove; 132-first axial limiting portion;

[0055] 14-sliding sleeve;

[0056] 15-push sleeve; 151-limiting ring groove;

[0057] 16-Elastic sleeve;

[0058] 17-tool locking member; 18-power transmission member; 19-tool positioning member;

[0059] 20-first bearing; 21-second bearing;

[0060] 22-sliding sleeve elastic member; 23-pushing sleeve elastic member;

[0061] 24-locking screw sleeve; 25-connecting screw sleeve;

[0062] 200-tool; 210-locking groove; 220-power unit;

[0063] 300 - support attachment; 310 - support sleeve; 311 - second circumferential limiting portion; 312 - second axial limiting portion; 312a - insertion notch; 313 - tool support channel. DETAILED DESCRIPTION

[0064] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0065] It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The form, quantity and proportion of each component in the actual implementation can be changed at will, and the component layout form may also be more complicated. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of the present specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0066] In the description of the following embodiments, the "axial direction" is the axial direction of the entire drill bit handle; in the description of the following embodiments, the directional terms "distal end" and "proximal end" are relative directions, "distal end" refers to the direction of the drill bit axially close to the tool, and "proximal end" refers to the direction of the drill bit axially away from the tool.

[0067] Please combine Figures 1 to 5As shown, the present invention provides a drill grinding handle 100, the drill grinding handle 100 is used to be detachably connected to a tool 200 and drive the tool 200 to rotate, the tool is a drill grinding, the front end of the drill grinding handle 100 is detachably connected to a support accessory 300 having a tool support channel 313, the drill grinding handle 100 comprises: a mounting sleeve 11, a power output shaft 12 and a locking sleeve 13, wherein the mounting sleeve 11 is used to be plugged with the support accessory 300; the power output shaft 12 is coaxially arranged in the mounting sleeve 11 and can rotate around its own axis, the power output shaft 11 2 is provided with a tool accommodating cavity 121 for inserting a tool 200 in the axial direction, and the tool accommodating cavity 121 is used to communicate with the tool supporting channel 313; the locking sleeve 13 is arranged outside the mounting sleeve 11 and can be operably rotated around the axis of the mounting sleeve 11, and the axial positions of the locking sleeve 13 and the mounting sleeve 11 are relatively fixed, and the rotation position of the locking sleeve 13 includes a locking position; the locking sleeve 13 is used to simultaneously lock the tool 200 inserted in the tool accommodating cavity 121 and the supporting accessory 300 inserted at the front end of the mounting sleeve 11 when rotating to the locking position.

[0068] Specifically, the support accessory 300 and the tool 200 can each be detachably connected to the drill handle 100, and a tool support channel 313 is provided inside the support accessory 300, which runs through the tool in the axial direction. The distal end of the mounting sleeve 11 is plugged into the support accessory 300. In this example, the distal end of the mounting sleeve 11 is plugged into the tool support channel 313 of the support accessory 300 (in other examples, it can also be configured that the support accessory 300 is plugged into the mounting sleeve 11). The tool support channel 313 of the support accessory 300 is connected to the tool accommodating cavity 121 of the power output shaft 12, and the tool 200 can pass through the tool support channel 313 of the support accessory 300 and be inserted into the tool accommodating cavity 121 of the power output shaft 12. When the tool 200 is locked in the power output shaft 12, it can rotate synchronously with the power output shaft 12. The implementation method of the tool support channel 313 is not limited to the attachment. Figure 4 In the case of the implementation mode in the above, any method in the prior art can also be adopted.

[0069] When the locking sleeve 13 is rotated to the locking position, the tool 200 can be connected to the power output shaft 12, and the supporting accessory 300 is connected to the mounting sleeve 11 and the locking sleeve 13 respectively, so that the tool 200 and the supporting accessory 300 are locked with the grinding drill handle 100. In this way, by rotating the locking sleeve 13, the respective locking actions of the tool 200 and the supporting accessory 300 are integrated together, avoiding the situation that the tool 200 and the supporting accessory 300 cannot be locked at the same time during the operation due to misoperation of the grinding drill handle, which is conducive to improving the safety of the operation; and the locking sleeve 13 is used to simultaneously realize the locking of the tool 200 and the supporting accessory 300, which is simple to operate and the operation method is faster and more convenient. .

[0070] In some embodiments, the rotation position of the locking sleeve 13 also includes an unlocking position. When the locking sleeve 13 is located at the unlocking position, the locking sleeve 13 simultaneously unlocks the tool 200 inserted in the tool accommodating cavity 121 and the supporting accessory 300 inserted at the front end of the mounting sleeve 11. Specifically, when the locking sleeve 13 is rotated to the unlocking position, the tool 200 can be unlocked from the power output shaft 12, and the supporting accessory 300 can be unlocked from the mounting sleeve 11 and the locking sleeve 13 respectively, so that the tool 200 and the supporting accessory 300 are respectively unlocked from the grinding drill handle 100. In this way, by rotating the locking sleeve 13 to the unlocking position, the tool 200 and the supporting accessory 300 can be unlocked simultaneously, and the operation is quick and convenient.

[0071] It is worth mentioning that the implementation method of "the locking sleeve 13 is used to rotate to the locking position" can be achieved by rotating the locking sleeve 13 from the unlocking position to the locking position. In the actual implementation process, it is not ruled out that the locking sleeve 13 can be rotated from other positions other than the unlocking position to the locking position.

[0072] For ease of understanding, the implementation method of “locking the tool 200 inserted in the tool accommodating cavity 121 when the locking sleeve 13 is rotated to the locking position” will be described below:

[0073] See also Figure 5 In the above embodiment, the drill grinding handle 100 further includes: a tool locking member 17 and a 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 accommodating cavity 121; the sleeve 14 is movably sleeved outside the power output shaft 12, and a transmission structure for converting the rotational motion of the locking sleeve 13 into the linear motion of the tool locking member 17 is provided between the sleeve 14 and the locking sleeve 13; when the locking sleeve 13 rotates from the unlocking position to the locking position, the 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 accommodating cavity 121; when the locking sleeve 13 rotates from the locking position to the unlocking position, the 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 sleeve 14 is slidably sleeved outside the power output shaft 12, and the sleeve 14 is located in the mounting sleeve 11. The sleeve 14 can be moved axially by rotating the locking sleeve 13. When the locking sleeve 13 is rotated to the locking position, the sleeve 14 can be moved 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 toward the proximal end of the power output shaft 12. When the locking sleeve 13 is rotated from the locking position to the unlocking position, the sleeve 14 can be moved in the direction opposite to the first axial direction, so that the sleeve 14 avoids the path of the tool locking member 17 unlocking the tool 200. The locking member 17 is not blocked by the sleeve 14, and can unlock the tool along the path of unlocking the tool 200, so that the tool can be removed from the tool accommodating cavity 121, and the tool 200 is unlocked.

[0075] For ease of understanding, it can be considered that the path for the locking member 17 to unlock the tool 200 and the locking path for locking the tool 200 can be overlapping but opposite paths.

[0076] See also Figure 5 and Figure 6 In some embodiments, the outer wall of the power output shaft 12 is provided with a locking member installation hole 122 connected to the tool accommodating cavity 121, and the tool locking member 17 moves along the axial direction of the locking member installation hole 122 to partially enter the tool accommodating cavity 121 and embed into the locking groove 210 provided on the outer wall of the tool 200 (see Fig.14 and Fig.15 ), or, to completely withdraw from the tool accommodating cavity 121 to unlock the tool 200 inserted in the tool accommodating cavity 121. Specifically, the outer wall of the tail of the tool 200 is provided with a locking groove 210 along its circumference, and the tool locking member 17 is movably embedded in the locking groove 210, wherein the tool locking member 17 can be a steel ball, which is not prone to jamming during the locking or unlocking process. 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 accommodating cavity 121.

[0077] When the locking sleeve 13 is rotated to the locking position, the tool locking member 17 can move and at least partially enter the tool accommodating cavity 121 and embed into 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 unlocking position, the tool locking member 17 can withdraw from the tool accommodating cavity 121, so that the tool 200 is unlocked, and the tool 200 can move axially and can be freely pulled out.

[0078] In this example, two locking member installation holes 122 are symmetrically provided on the peripheral side wall of the power output shaft 12 along the radial direction thereof, and the locking member installation holes 122 are connected with the tool accommodating cavity 121 inside the power output shaft 12, and the tool locking member 17 moves along the axial direction of the locking member installation hole 122 (i.e., along the radial direction of the power output shaft 12). Rotating the locking sleeve 13 can make the sliding sleeve 14 move axially under the transmission action of the transmission structure, and when the sliding sleeve 14 moves to cover the locking member installation hole 122, the tool locking member 17 is pushed into the tool accommodating cavity 121 and embedded in the locking groove 210, and the tool 200 is locked at this time; when the sliding sleeve 14 moves to expose the locking member installation hole 122, the tool locking member 17 can move radially and withdraw from the locking groove 210 and the tool accommodating cavity 121, and the tool 200 can be freely inserted or removed at this time. By rotating the locking sleeve 13 to the locking position or the unlocking position, the sliding sleeve 14 can slide back and forth on the power output shaft 12 to achieve locking or unlocking of the tool 200 .

[0079] In other embodiments, the tool locking member 17 is a movable sleeve (not shown) movably sleeved in the power output shaft 12, the tool accommodating cavity 121 is formed in the movable sleeve, and the front end of the power output shaft 12 has a plurality of elastic clamping arms distributed in the circumferential direction, and the elastic clamping arms have a conical surface or an inclined surface for the tool locking member 17 to push, and 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 accommodating cavity 121. Specifically, the tool locking member 17 is a movable sleeve sleeved in the power output shaft 12, and the elastic clamping wall at the front end of the power output shaft 12 can gather toward the center of the power output shaft 12 when squeezed. Rotating the locking sleeve 13 can make the sliding sleeve 14 move axially under the transmission action of the transmission structure. When the locking sleeve 13 is rotated to the locking position, the tool locking member 17 moves in the direction close to the distal end of the power output shaft 12, so that the elastic clamping arm is pushed and deformed and clamps the tool 200; when the locking sleeve 13 is rotated to the unlocking position, the tool locking member 17 moves in the direction away from the distal end of the power output shaft 12, thereby releasing the force of the elastic clamping arm to release the tool 200.

[0080] See also Figure 5 and Figure 6The transmission structure includes: a sleeve elastic member 22, a push sleeve 15 and a power transmission member 18, wherein the sleeve elastic member 22 is used to apply an elastic force along a first axial direction to the sleeve 14 to keep the position of the sleeve 14 in a normal position, and when the sleeve 14 is in the normal position, the tool locking member 17 locks the tool 200 inserted in the tool accommodating cavity 121; the push sleeve 15 is sleeved outside the power output shaft 12, and the push sleeve 15 is used to resist the sleeve 14 to apply a force opposite to the first axial direction to the sleeve 14, and when the push sleeve 15 overcomes the elastic force and moves in the opposite direction of the first axial direction, it pushes the sleeve 14 to leave the normal position and unlocks the tool 200 inserted in the tool accommodating cavity 121. Specifically, Figure 5 , Figure 6 In the example, the power output shaft 12 is rotatably arranged in the mounting sleeve 11, the sleeve elastic member 22 is a spring, a disc spring or other type of compression spring sleeved outside the power output shaft 12, and the two ends of the sleeve elastic member 22 are respectively abutted between the shaft shoulder of the power output shaft 12 and the sleeve 14. The lock sleeve 13 is rotatably sleeved outside the mounting sleeve 11, the push sleeve 15 is located in the mounting sleeve 11, and the push sleeve 15 is sleeved outside the power output shaft 12 and is used to abut against the sleeve 14. The circumferential rotation of the lock sleeve 13 is converted into the axial movement of the push sleeve 15 by the transmission action of the power transmission member 18.

[0081] When the locking sleeve 13 is rotated to the locking position, the elastic force of the sliding sleeve elastic member 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 member 17 to lock the tool 200; when the locking sleeve 13 is rotated to the unlocking position, the push sleeve 15 can be moved 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 member 17 unlocking the tool 200, thereby unlocking the tool 200. In this way, the elastic force applied by the sliding sleeve elastic member 22 can keep the tool locking member 17 in a state of keeping the tool locked. If the tool 200 is to be unlocked, the elastic force needs to be overcome to unlock it, which is conducive to keeping the tool 200 in a locked state during the operation, thereby improving the safety of the operation.

[0082] Please continue to see Figure 5 , Figure 6 The transmission structure further includes a power transmission member 18, which cooperates with the lock sleeve 13, the mounting sleeve 11 and the push sleeve 15 respectively to convert the rotational motion of the lock sleeve 13 into the axial motion of the sliding sleeve 14. The following embodiments will illustrate how to convert the rotational motion of the lock sleeve 13 into the axial motion of the sliding sleeve 14:

[0083] In the case where the sliding sleeve elastic member 22 and the push sleeve 15 are provided, the inner wall of the locking sleeve 13 is provided with a guide groove 131 extending along its axial direction (see Fig.11 and Fig.12 The mounting sleeve 11 is provided with a spiral groove 111 extending through the wall thickness thereof (see Figure 8 ), the spiral groove 111 is a cylindrical spiral groove, that is, 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 inclined relative to the axial direction of the mounting sleeve 11; a limiting annular groove 151 is provided on the outer peripheral wall of the push sleeve 15 along the circumferential direction (see Fig.13 ), the power transmission member 18 is simultaneously located in the guide groove 131, the spiral groove 111 and the limiting ring groove 151 (see Figure 7 ).

[0084] Specifically, the locking sleeve 13 is sleeved 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, and 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, and the notch of the guide grooves 131 is connected to the interior of the locking sleeve 13, and the guide grooves 131 allow the power transmission member 18 to be axially movable inside the locking sleeve 13; two spiral grooves 111 are also correspondingly arranged on the mounting sleeve 11, and when the locking sleeve 13 rotates relative to the mounting sleeve 11, the power transmission member 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 circumferentially arranged 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. Since the spiral groove 111 is extended in a spiral shape, when the lock sleeve 13 is rotated, the power transmission member 18 will move along the spiral groove 111 as the lock sleeve 13 rotates, and is converted into an axial movement of the installation sleeve 11 under the action of the guide groove 131 of the installation sleeve 11, and since the power transmission member 18 is also in the limiting ring groove 151 of the push sleeve 15, the push sleeve 15 can be synchronously driven to move axially on the power output shaft 12. The power transmission member 18 is simultaneously located in the guide groove 131, the spiral groove 111 and the limiting ring groove 151. This multiple constraint and guide mechanism makes the locking process more accurate and reliable, and through the synergistic effect, the rotation of the lock sleeve 13 is converted into the movement of the push sleeve 15.

[0085] See also Figure 6It can be understood that the distal end and the proximal end of the power output shaft 12 are respectively arranged in the mounting sleeve 11 through the first bearing 20 and the second bearing 21, and the sliding sleeve 14 and the push sleeve 15 are located between the first bearing 20 and the second bearing 21. Specifically, the first bearing 20 is sleeved on the distal end of the power output shaft 12, and the second bearing 21 is sleeved on the rear end of the power output shaft 12. The power output shaft 12 is rotatably connected to the mounting sleeve 11 through the first bearing 20 and the second bearing 21, ensuring the stable support and accurate positioning of the power output shaft 12 in the mounting sleeve 11.

[0086] Continue reading Figure 6 The transmission structure further includes a push sleeve elastic member 23, which is used to apply a force along the first axial direction to the push sleeve 15. The push sleeve elastic member 23 is sleeved on the outer side of the sliding sleeve elastic member 22, and the two ends of the push sleeve elastic member 23 are respectively abutted between the first bearing 20 and the push sleeve 15. The push sleeve elastic member 23 makes the push sleeve 15, when there is no external force, always contact the outer ring of the second bearing 21 with the end of the push sleeve 15 away from the push sleeve elastic member 23, when the power output shaft 12 rotates, the push sleeve elastic member 23 and the push sleeve 15 are stationary. At the same time, the push sleeve elastic member 23 can prevent the push sleeve 15 from moving when the tool 200 is locked, which is conducive to noise reduction and reliability improvement.

[0087] Also, see Figure 6 , Fig. 9 and Fig.10 A tool positioning hole 123 is provided on the peripheral side wall of the power output shaft 12 along its radial direction, and the tool positioning hole 123 is communicated with the tool accommodating 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 arranged 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 accommodating cavity 121 (see Fig.14 and Fig.15 The power unit 220 is a flat square structure, and two symmetrically arranged tool positioning members 19 abut against the power unit 220, which can limit the circumferential rotation of the tool 200 on the one hand, and facilitate the power output shaft 12 to transmit torque to the tool 200 on the other hand. In this way, the tool 200 is locked circumferentially by the tool positioning member 19, and the tool 200 is locked axially by the tool locking member 17, thereby achieving complete locking of the tool 200.

[0088] See also Figure 6It should be noted that an elastic sleeve 16 is fixedly provided on the power output shaft 12, and 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 limits the moving path of the tool positioning member 19 to prevent the tool positioning member 19 from slipping out of the locking member mounting hole 122.

[0089] There are many ways to achieve "relatively fixing the axial positions of the locking sleeve 13 and the mounting sleeve 11". Figure 5 In the embodiment, the drill grinding handle 100 further includes a locking screw sleeve 24 and a connecting screw sleeve 25, wherein the locking screw sleeve 24 is sleeved on the mounting sleeve 11 and axially abuts against the inner part of the locking sleeve 13, and the connecting screw sleeve 25 is sleeved on the mounting sleeve 11 and abuts against the rear end of the locking sleeve 13, and the locking screw sleeve 24 and the connecting screw sleeve 25 jointly axially limit the locking sleeve 13. Specifically, the locking screw sleeve 24 is close to the front end of the mounting sleeve 11 and is threadedly connected to the mounting sleeve 11, and the connecting screw sleeve 25 is located at the rear end of the locking sleeve 13 and is threadedly connected to the mounting sleeve 11, and the locking screw sleeve 24 and the connecting screw sleeve 25 jointly limit the axial movement of the locking sleeve 13, but can allow the locking sleeve 13 to rotate axially around the mounting sleeve 11, which is conducive to enabling the locking sleeve 13 to maintain its predetermined position and stability during installation and use, thereby ensuring the precise operation and reliability of the drill grinding handle 100.

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

[0091] See also Figure 7 , Figure 8 , Fig.16 and Fig.17 In some embodiments, a limiting surface 113 for limiting the insertion depth of the support accessory 300 is provided on the mounting sleeve 11, and a first circumferential limiting portion 112 is also provided on the mounting sleeve 11, and the first circumferential limiting portion 112 is used to cooperate with the second circumferential limiting portion 311 of the support accessory 300 to circumferentially limit the support accessory 300; a first axial limiting portion 132 is provided at the front end of the locking sleeve 13; when the locking sleeve 13 is in the locking position to lock the support accessory 300, the first axial limiting portion 132 and the second axial limiting portion 312 of the support accessory 300 at least partially overlap and face each other in the circumferential direction to prevent the support accessory 300 from detaching from the mounting sleeve 11; when the locking sleeve 13 is in the unlocking position, the first axial limiting portion 132 and the second axial limiting portion 312 are staggered in the circumferential direction so that the support accessory 300 can axially detach from or plug into the mounting sleeve 11.

[0092] Specifically, when the mounting sleeve 11 is plugged into the supporting 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 supporting accessory 300 when plugged into each other. The first circumferential limiting portion 112 provided on the mounting sleeve 11 is adapted to the second circumferential limiting portion 311 provided on the supporting accessory 300 to perform circumferential limiting on the supporting accessory 300. The "circumferential limiting" here refers to preventing the supporting accessory 300 from rotating relative to the mounting sleeve 11. The circumferential limiting method may adopt, for example, a key and keyway matching method, a flat square structure matching method, a spline structure matching method, and the like. In the present embodiment, the first circumferential limiting portion 112 and the second circumferential limiting portion 311 adopt a flat square structure matching method, that is, the first circumferential limiting portion 112 and the second circumferential limiting portion 311 adopt mutually matching flat square structures.

[0093] Rotating the locking sleeve 13 to the locking position can make the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the support accessory 300 at least partially overlap and face each other in the circumferential direction, so as to prevent the support accessory 300 from being separated from the mounting sleeve 11, thereby locking the support accessory 300 and the drill handle 100; or, rotating the locking sleeve 13 to the unlocking position can make the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the support accessory 300 staggered in the circumferential direction, so that the support accessory 300 can be axially separated from or inserted into the mounting sleeve 11, thereby unlocking the support accessory 300 and the drill handle 100.

[0094] More specifically, one of the first axial limiting portion 132 and the second axial limiting portion 312 is an annular limiting portion provided with an insertion notch 312a, and the insertion notch 312a extends from one side of the annular limiting portion to the other side of the annular limiting portion in the axial direction. When the locking sleeve 13 is in the unlocked position, the other limiting portion can pass through the insertion notch 312a in the axial direction, so that the grinding drill handle 100 and the supporting accessory 300 can be separated from or plugged into each other. 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 supporting accessory 300 is an annular limiting portion with an 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 in the axial direction, so that the supporting accessory 300 can be separated from or plugged into the mounting sleeve 11. When the locking sleeve 13 is rotated to the locking position, the first axial limiting portion 132 of the locking sleeve 13 can be screwed into the annular limiting portion, and the supporting accessory 300 is restricted from axial movement and cannot fall out.

[0095] In the above embodiment, the locking sleeve 13 is provided with a first plug-in cavity for inserting the support accessory 300, and the first axial limiting portion 132 is protruded from the cavity wall of the first plug-in cavity to adapt to the second axial limiting portion 312 protruded from the outer wall of the support accessory 300; or, the locking sleeve 13 is used to be inserted into the second plug-in cavity of the support accessory 300, and the first axial limiting portion 132 is protruded from the outer wall of the locking sleeve 13 to adapt to the second axial limiting portion 312 protruded from the cavity wall of the second plug-in cavity. Specifically, the locking sleeve 13 and the support accessory 300 can be plugged in such that the rear end of the support accessory 300 is inserted into the first plug-in cavity of the locking sleeve 13, and the first axial limit portion 132 arranged on the inner wall of the locking sleeve 13 is adapted to the second axial limit portion 312 arranged on the outer wall of the support accessory 300; or, the locking sleeve 13 and the support accessory 300 can be plugged in such that the front end of the locking sleeve 13 is inserted into the second plug-in cavity of the support accessory 300, and the first axial limit portion 132 arranged on the outer wall of the locking sleeve 13 is adapted to the second axial limit portion 312 arranged on the inner wall of the support accessory 300.

[0096] It can be understood that there is an installation gap between the locking sleeve 13 and the mounting sleeve 11 for inserting the supporting accessory 300, the installation gap has a forward opening, the first circumferential limiting portion 112 is provided on the outer wall of the mounting sleeve 11, and the first axial limiting portion 132 is provided 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 match with the second circumferential limiting portion 311 located on the inner wall of the supporting sleeve 310; the first axial limiting portion 132 is located on the inner wall of the locking sleeve 13 to match with the second axial limiting portion 312 located on the outer wall of the supporting sleeve 310. There is an installation gap between the front end inner wall of the locking sleeve 13 and the circumferential outer wall of the mounting sleeve 11. When the support accessory 300 is connected to the drill handle 100, the rear end of the support accessory 300 is at least partially inserted into the installation gap. In this way, not only sufficient insertion space is provided for the rear end of the support accessory 300, but also smooth rotation of the locking sleeve 13 is ensured, and jamming or damage problems caused by too small a gap are avoided; moreover, the contact area between the connecting parts is increased, the connection strength between the support accessory 300 and the drill handle 100 is enhanced, the stability of the connection is improved by physical interlocking, and the locking sleeve 13 can more effectively lock or unlock the support accessory 300 when rotating.

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

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

[0099] In summary, the drill handle 100 and the drill device provided by the present invention can realize the simultaneous locking of the tool 200 and the supporting accessory 300 by rotating the locking sleeve 13 to the locking position, and integrate the respective locking actions of the tool 200 and the supporting accessory 300, thereby avoiding the situation where the tool and the supporting accessory cannot be locked at the same time during surgery due to misoperation of the drill handle, which is beneficial to improving the safety of the surgery; and the locking of the tool and the supporting accessory can be realized simultaneously by the locking sleeve, which 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 the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A drill handle, the drill handle is used to be detachably connected to a tool and drive the tool, the front end of the drill handle is detachably connected to a support attachment having a tool support channel, characterized in that: The drill handle comprises: A mounting sleeve, the mounting sleeve being used for plugging with the supporting accessory; A power output shaft is coaxially arranged in the mounting sleeve and can rotate around its own axis, and a tool accommodating cavity for inserting a tool is axially arranged inside the power output shaft, and the tool accommodating cavity is used to communicate with the tool supporting channel; A locking sleeve, which is arranged outside the mounting sleeve and can be operably rotated around the axis of the mounting sleeve, and the rotation position of the locking sleeve includes a locking position; The locking sleeve is used to simultaneously lock the tool inserted in the tool accommodating cavity and the supporting accessory inserted in the front end of the mounting sleeve when the locking sleeve is rotated to the locking position.

2. The drill handle according to claim 1, characterized in that: The rotation position of the locking sleeve also includes an unlocking position. When the locking sleeve is located at the unlocking position, the locking sleeve simultaneously unlocks the tool inserted in the tool accommodating cavity and the supporting 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 member is movably disposed on the power output shaft to lock or unlock the tool inserted in the tool accommodating cavity; A sliding sleeve is movably sleeved outside the power output shaft, and a transmission structure for converting the rotational motion of the locking sleeve into the linear motion of the tool locking member is provided between the sliding sleeve and the locking sleeve; When the locking sleeve rotates from the unlocking position to the locking 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 accommodating cavity; when the locking sleeve rotates from the locking position to the unlocking 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 piece mounting hole connected to the tool accommodating cavity. The tool locking piece moves along the axial direction of the locking piece mounting hole to partially enter the tool accommodating cavity and embed into the locking groove formed on the outer wall of the tool, or to completely withdraw from the tool accommodating cavity to unlock the tool inserted in the tool accommodating cavity.

5. The drill handle according to claim 3, characterized in that: The tool locking member is a movable sleeve movably sleeved in the power output shaft, the tool accommodating cavity is formed in the movable sleeve, the front end of the power output shaft has a plurality of elastic clamping arms distributed along the circumferential direction, the elastic clamping arms have a conical surface or an 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 accommodating cavity.

6. The drill handle according to claim 3, characterized in that: The transmission structure comprises: a sleeve elastic member, used for applying an elastic force along a first axial direction to the sleeve to keep the sleeve in a normal position, and when the sleeve is in the normal position, the tool locking member locks the tool inserted in the tool accommodating cavity; A push sleeve, which is sleeved outside the power output shaft, and is used to resist the sliding sleeve to apply a force opposite to the first axial direction to the sliding sleeve. When the push sleeve overcomes the elastic force and moves in the opposite direction of the first axial direction, it pushes the sliding sleeve to leave the normal position, unlocking the tool inserted in the tool accommodating cavity; The power transmission member is matched with the locking sleeve, the mounting sleeve and the pushing sleeve respectively to convert the rotational motion of the locking sleeve into the axial motion of the pushing 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 axial direction, the circumferential side wall of the mounting sleeve is provided with a spiral groove penetrating through its own wall thickness, the spiral groove is a cylindrical spiral groove, and the outer circumferential wall of the push sleeve is provided with a limiting ring groove along the circumferential direction, and the power transmission component is simultaneously located in the guide groove, the spiral groove and the limiting ring groove.

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 supporting accessory, and the mounting sleeve is also provided with a first circumferential limiting portion, which is used to cooperate with the second circumferential limiting portion of the supporting accessory to circumferentially limit the supporting accessory; the front end of the locking sleeve is provided with a first axial limiting portion; When the locking sleeve is in the locking position to lock the supporting accessory, the first axial limiting portion and the second axial limiting portion of the supporting accessory at least partially overlap and face each other in the circumferential direction to prevent the supporting accessory from detaching from the mounting sleeve; when the locking sleeve is in the unlocking position, the first axial limiting portion and the second axial limiting portion are staggered in the circumferential direction to enable the supporting accessory to axially detach from or be plugged into the mounting sleeve.

9. The drill handle according to claim 8, characterized in that: The locking sleeve is provided with a first inserting cavity for inserting the supporting accessory, and the first axial limiting portion is convexly arranged on the cavity wall of the first inserting cavity to be adapted to the second axial limiting portion convexly arranged on the outer wall of the supporting accessory; or, The locking sleeve is used to be inserted into the second plug-in cavity of the supporting accessory, and the first axial limiting portion is protruded on the outer wall of the locking sleeve to match with the second axial limiting portion protruded on the cavity wall of the second plug-in cavity.

10. The drill handle according to claim 9, characterized in that: An installation gap for inserting a supporting accessory is provided between the locking sleeve and the mounting sleeve, and the installation gap has a forward 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 locking sleeve.

11. A drill grinding device, characterized in that: The utility model comprises a matching drill grinding handle and a supporting attachment, wherein the drill grinding handle is the drill grinding handle described in any one of claims 1-10.

12. The drill grinding device according to claim 11, characterized in that: The supporting accessory comprises a supporting sleeve, and when the locking sleeve locks the tool and the supporting accessory simultaneously, the supporting sleeve is connected to the mounting sleeve and the locking sleeve respectively.

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