Medical power handle and medical kit

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a medical power handle and a medical suite, and the medical power handle comprises a mounting sleeve used for being connected with a supporting accessory in an inserted mode; the power transmission piece is coaxially arranged in the mounting sleeve and can rotate around the axis of the power transmission piece, a tool containing cavity used for allowing a tool to be inserted therein is formed in the power transmission piece in the axial direction, and the tool containing cavity is used for being communicated with the tool supporting channel; the mounting sleeve is sleeved with the lock sleeve in a matched mode, the lock sleeve can operably rotate around the axis of the mounting sleeve, the rotating positions of the lock sleeve comprise a full-locking position, a semi-locking position and a full-unlocking position, the lock sleeve locks or unlocks the cutter through a first transmission structure, and the lock sleeve locks or unlocks the supporting accessory through a second transmission structure. According to switching of different gears, different connection states of the cutter and the supporting accessory with the handle can be achieved, and the requirements of operators for different working conditions can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical power handle and a medical kit. Background Art

[0002] Medical bur is an important medical device, widely used in orthopedics, dentistry, neurosurgery and other medical fields. Medical bur is mainly composed of handle, motor, cutter, etc. It realizes cutting, grinding and repairing of bones or teeth by rotating cutter (drill bit), and is mainly used for processing bone tissue or teeth in surgical operations.

[0003] Medical burr handles are usually connected to the tool through a support accessory. Before normal operation, the support accessory and the tool need to be locked at the same time to ensure reliable operation. However, the existing burr handle is equipped with two locking mechanisms to lock the support accessory and the tool one by one. When the support accessory and the tool need to be unlocked or locked at the same time, the two locking mechanisms need to be operated at the same time, which is relatively complicated. In addition, when the tool needs to be replaced separately, it is easy to accidentally touch the locking mechanism corresponding to the support accessory, which takes time to ensure that the support accessory is locked, resulting in a long time cost for replacing the tool and prolonged surgery time. 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 medical power handle and a medical kit, which are used to solve the problem that the drill handle in the prior art is complicated to operate when it is necessary to lock or unlock the supporting accessory and the tool at the same time, and the problem that the supporting accessory is easily touched by mistake when the tool needs to be replaced separately, resulting in a long replacement time cost.

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

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

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

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

[0009] A locking sleeve, a first transmission structure and a second transmission structure, wherein the locking sleeve is arranged outside the mounting sleeve and can be operably rotated around the axis of the mounting sleeve, and the rotational position of the locking sleeve includes a fully locked position, a semi-locked position and a fully unlocked position, the locking sleeve locks or unlocks the tool through the first transmission structure, and the locking sleeve locks or unlocks the supporting accessory through the second transmission structure;

[0010] When the locking sleeve is in the fully locked position, the first transmission structure is locked and inserted into the tool in the tool accommodating cavity, and the second transmission structure is locked and inserted into the supporting attachment at the front end of the mounting sleeve;

[0011] When the locking sleeve is located at the semi-locking position, the first transmission structure unlocks the tool inserted in the tool accommodating cavity, and the second transmission structure locks the supporting accessory inserted at the front end of the mounting sleeve;

[0012] When the locking sleeve is located at the fully unlocked position, the first transmission structure unlocks the tool inserted in the tool accommodating cavity, and the second transmission structure unlocks the supporting attachment inserted at the front end of the mounting sleeve.

[0013] Optionally, the first transfer structure includes:

[0014] A first guide groove is provided on the locking sleeve or the mounting sleeve, wherein a plurality of locking groove portions are provided at intervals along the guide edge of the first guide groove, and each locking groove portion corresponds to a gear position;

[0015] a gear locking member, which is cooperatively arranged in the first guide groove, and the gear locking member is configured to move along the guide direction of the first guide groove when the locking sleeve rotates;

[0016] When the locking sleeve is located at any one of the fully locked position, the half locked position and the fully unlocked position, the gear locking member is embedded in the corresponding locking groove portion.

[0017] Optionally, the first guide groove runs through the peripheral side wall of the mounting sleeve, and the first guide groove is a cylindrical spiral groove; the first transmission structure further includes:

[0018] A second guide groove is provided on the inner wall of the lock sleeve and extends along the axial direction of the lock sleeve, and the gear locking member partially extends into the second guide groove;

[0019] A movable sleeve is arranged in the installation sleeve and is movably sleeved outside the power transmission member. The movable sleeve locks the tool by moving along the first axial direction of the power transmission member or unlocks the tool by moving along the second axial direction of the power transmission member. A limiting ring groove is circumferentially arranged on the outer peripheral wall of the movable sleeve, and the gear locking member partially extends into the limiting ring groove;

[0020] When the locking sleeve rotates, the gear locking member drives the moving sleeve to move along the axial direction of the power transmission member under the joint guiding action of the first guide groove, the second guide groove and the limiting ring groove.

[0021] Optionally, the first guide groove is formed on the inner wall of the lock sleeve, and the first guide groove is a cylindrical spiral groove; the first transmission structure further includes:

[0022] A second guide groove, penetrating through the peripheral side wall of the mounting sleeve and extending along the axial direction of the mounting sleeve;

[0023] A movable sleeve is arranged in the installation sleeve and is movably sleeved outside the power transmission member. The movable sleeve locks the tool by moving along the first axial direction of the power transmission member or unlocks the tool by moving along the second axial direction of the power transmission member. A limiting ring groove is circumferentially arranged on the outer peripheral wall of the movable sleeve, and the gear locking member partially extends into the limiting ring groove;

[0024] When the locking sleeve rotates, the gear locking member drives the moving sleeve to move along the axial direction of the power transmission member under the joint guiding action of the first guide groove, the second guide groove and the limiting ring groove.

[0025] Optionally, the plurality of locking groove portions include a full locking groove portion, a half locking groove portion and a full unlocking groove portion; the full locking groove portion and the full unlocking groove portion on the first guide groove are respectively located at two ends of the first guide groove, and the half locking groove portion is located between the full locking groove portion and the full unlocking groove portion;

[0026] When the locking sleeve is located at the fully locked position, the gear locking member is embedded in the fully locked groove;

[0027] When the locking sleeve is located at the semi-locking position, the gear locking member is embedded in the semi-locking groove;

[0028] When the lock sleeve is located at the fully unlocked position, the gear locking member is embedded in the fully unlocked groove portion.

[0029] Optionally, the first transfer structure further includes:

[0030] A tool locking member, movably embedded in the peripheral side wall of the power transmission member, to lock or unlock the tool inserted in the tool accommodating cavity;

[0031] A sliding sleeve, which is arranged outside the power transmission member;

[0032] A sliding sleeve elastic member, used for applying an elastic force along a first axial direction to the sliding sleeve;

[0033] The sliding sleeve moves along the first axial direction and pushes the tool locking member to move along the locking path, so that the tool locking member partially enters the tool accommodating cavity and locks the tool inserted in the tool accommodating cavity;

[0034] The sliding sleeve moves along the second axial direction under the push of the moving sleeve to avoid the path of the tool locking member unlocking the tool.

[0035] Optionally, the second transmission structure includes a first circumferential limit portion provided on the mounting sleeve, and a first axial limit portion provided at the front end of the locking sleeve.

[0036] 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;

[0037] When the locking sleeve is in the fully locked position or the semi-locked position, 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 fully unlocked 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.

[0038] 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.

[0039] Optionally, one of the first axial limiting portion and the second axial limiting portion is an annular limiting portion provided with an insertion notch, and the insertion notch extends from one side of the annular limiting portion to the other side of the annular limiting portion along the axial direction. When the locking sleeve is in the fully unlocked position, the other limiting portion can pass through the insertion notch along the axial direction to enable the medical power handle and the supporting accessory to be disengaged or plugged into each other.

[0040] Based on the same concept, the present invention also provides a medical kit, including a matching medical power handle and a supporting accessory, wherein the medical power handle is the medical power handle as described above.

[0041] As described above, the medical power handle and medical kit of the present invention have the following beneficial effects:

[0042] By rotating the locking sleeve, the locking or unlocking actions of the tool and the supporting accessory with the medical power handle can be integrated together. When it is necessary to unlock the supporting accessory and the tool at the same time, or unlock the supporting accessory and the tool at the same time, or unlock or lock the tool separately, the different connection states of the tool and the supporting accessory with the handle assembly can be achieved by simply switching the locking sleeve between different gears, which can meet the operator's needs for different working conditions, has a simple structure, is easy to operate, and improves work efficiency; and, when the tool needs to be replaced separately, it will not affect the locking of the supporting accessory, saving the time cost of tool replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the exploded structure of the medical power handle, supporting accessories and cutting tool according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the assembly structure of the medical power handle, the supporting attachment and the cutter according to an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the assembly structure of the medical power handle and the support sleeve according to an embodiment of the present invention;

[0046] Figure 4 It is an assembly cross-sectional view of the medical power handle, the supporting attachment and the cutter in the embodiment of the present invention;

[0047] Figure 5 is a cross-sectional view of a medical power handle in an embodiment of the present invention;

[0048] Figure 6 It is a partial structural cross-sectional view of the medical power handle in an embodiment of the present invention (fully locked position);

[0049] Figure 7 It is a partial structural cross-sectional view of the medical power handle in an embodiment of the present invention (semi-locked position);

[0050] Figure 8 It is a partial structural cross-sectional view of the medical power handle in an embodiment of the present invention (fully unlocked position);

[0051] Fig. 9 Schematic diagram of part of the structure of the medical power handle in an embodiment of the present invention (excluding the locking sleeve);

[0052] Fig.10 It is a structural schematic diagram of the installation sleeve in an embodiment of the present invention;

[0053] Fig.11 A cross-sectional view of a power transmission member in an embodiment of the present invention Figure 1 ;

[0054] Fig.12 A cross-sectional view of a power transmission member in an embodiment of the present invention Figure 2 (AA direction);

[0055] Fig.13 It is a structural schematic diagram of a lock sleeve in an embodiment of the present invention;

[0056] Fig.14 is a cross-sectional view of a lock sleeve in an embodiment of the present invention;

[0057] Fig.15 It is a M-direction view of the lock sleeve in the embodiment of the present invention;

[0058] Fig.16 It is an N-direction view of the lock sleeve in the embodiment of the present invention;

[0059] Fig.17 It is a schematic diagram of the structure of the mobile sleeve in an embodiment of the present invention;

[0060] Fig.18 The structure of the tool in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0061] Fig.19 The structure of the tool in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0062] Fig. 20 It is a schematic diagram of the structure of the support sleeve in an embodiment of the present invention;

[0063] Fig.21 is a cross-sectional view (BB direction) of the support sleeve in an embodiment of the present invention;

[0064] Fig. 22 It is a P-direction view of the support sleeve in the embodiment of the present invention.

[0065] Description of Reference Numerals

[0066] 100-Medical power handle;

[0067] 11-installation sleeve; 111-first guide groove; 111a-full unlocking groove portion; 111b-semi-locking groove portion; 111c-full locking groove portion; 112-first circumferential limiting portion; 113-limiting surface;

[0068] 12-power transmission member; 121-tool accommodating cavity; 122-locking member mounting hole; 123-tool positioning hole;

[0069] 13-locking sleeve; 131-second guide groove; 132-first axial limiting portion;

[0070] 14-sliding sleeve;

[0071] 15-moving sleeve; 151-limiting ring groove;

[0072] 16-Elastic sleeve;

[0073] 17- tool locking piece; 18- gear locking piece; 19- tool positioning piece;

[0074] 20-first bearing; 21-second bearing;

[0075] 22-sliding sleeve elastic member; 23-moving sleeve elastic member;

[0076] 24-locking screw sleeve; 25-connecting screw sleeve;

[0077] 200-tool; 210-locking groove; 220-power unit;

[0078] 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

[0079] 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.

[0080] 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.

[0081] The "medical power handle" in this example can be a grinding drill handle, and the "tool" can be a grinding tool having a tool bar and a grinding head. Of course, in the actual implementation process, it is not excluded that the medical power handle can be other handles than the grinding drill handle, and the tool can also be other tools than the grinding tool.

[0082] In the description of the following embodiments, the "axial direction" is the axial direction of the entire medical power handle; in the description of the following embodiments, the directional words "distal" and "proximal" are relative directions, and the "distal" (or "front end") refers to the direction of the grinding head close to the tool along the axial direction, and the "proximal" (or "rear end") refers to the direction of the grinding head away from the tool along the axial direction.

[0083] Please combine Figures 1 to 4 As shown, the present invention provides a medical power handle, which is used to be detachably connected to a tool 200 and drive the tool 200. The front end of the medical power handle 100 is detachably connected to a support accessory 300 having a tool support channel 313. The medical power handle 100 includes: a mounting sleeve 11, a power transmission member 12, a locking sleeve 13, a first transmission structure and a second transmission structure, wherein the mounting sleeve 11 is used to be plugged with the support accessory 300; the power transmission member 12 is coaxially arranged in the mounting sleeve 11 and can rotate around its own axis, and a tool accommodating cavity 121 for inserting the tool 200 is axially arranged inside the power transmission member 12, and the tool accommodating cavity 121 is used to connect with the tool support channel 313; the locking sleeve 13 is cooperatively arranged outside the mounting sleeve 11 and can be operably rotated around the axis of the mounting sleeve 11, and the rotation position of the locking sleeve 13 includes a fully locked position, ... In the semi-locked position and the fully unlocked position, the locking sleeve 13 locks or unlocks the tool 200 through the first transmission structure, and the locking sleeve 13 locks or unlocks the supporting accessory 300 through the second transmission structure; when the locking sleeve 13 is located in the fully locked position, the first transmission structure locks and inserts the tool 200 in the tool accommodating cavity 121, and the second transmission structure locks and inserts the supporting accessory 300 at the front end of the mounting sleeve 11; when the locking sleeve 13 is located in the semi-locked position, the first transmission structure unlocks the tool 200 inserted in the tool accommodating cavity 121, and the second transmission structure locks and inserts the supporting accessory 300 at the front end of the mounting sleeve 11; when the locking sleeve 13 is located in the fully unlocked position, the first transmission structure unlocks the tool 200 inserted in the tool accommodating cavity 121, and the second transmission structure unlocks the supporting accessory 300 inserted at the front end of the mounting sleeve 11.

[0084] Specifically, the support accessory 300 and the cutter 200 can be detachably connected to the medical power handle 100, and a cutter support channel 313 is provided inside the support accessory 300, which runs through the axial direction. The distal end of the mounting sleeve 11 is plugged into the support accessory 300. When the support accessory 300 is connected to the medical power handle 100, in this example, the distal end of the mounting sleeve 11 is plugged into the cutter support channel 313 of the support accessory 300 (in other examples, the support accessory 300 can also be plugged into the mounting sleeve 11). The support accessory 300 is connected to the mounting sleeve 11 and the locking sleeve 13 respectively, and the axial positions of the locking sleeve 13 and the mounting sleeve 11 are relatively fixed. When the cutter 200 is connected to the medical power handle 100, the front end of the mounting sleeve 11 is inserted into the cutter support channel 313 of the support accessory 300, and the cutter support channel 313 of the support accessory 300 is connected to the cutter accommodating cavity 121 of the power transmission member 12. The tail of the cutter 200 can pass through the cutter support channel 313 of the support accessory 300 and be inserted into the cutter accommodating cavity 121. When the cutter 200 is locked in the power transmission member 12, it can rotate synchronously with the power transmission member 12. The implementation method of the cutter support channel 313 is not limited to the implementation method in this embodiment, and any method in the prior art can also be adopted.

[0085] The locking sleeve 13 can rotate around the axis of the mounting sleeve 11. Through the rotation of the locking sleeve 13, the locking sleeve 13 can be located in different gears (fully locked position, half locked position and fully unlocked position). The rotation of the locking sleeve 13 can realize the locking or unlocking of the tool 200 by relying on the first transmission structure, and the locking or unlocking of the supporting accessory 300 by relying on the second transmission structure, thereby realizing different connection states of the tool 200 and the supporting accessory 300 with the medical power handle 100, as follows:

[0086] When the locking sleeve 13 is rotated to the fully locked position, the tool 200 inserted in the tool accommodating cavity 121 can be locked by the first transmission structure, and the supporting accessory 300 inserted at the front end of the mounting sleeve 11 can be locked by the second transmission structure. Even if the tool 200 is in a locked connection state with the power transmission member 12, and the supporting accessory 300 is respectively connected with the mounting sleeve 11 and the locking sleeve 13, so that the tool 200 and the supporting accessory 300 are respectively kept in a locked state with the medical power handle 100, normal operation can be performed at this time.

[0087] When the lock sleeve 13 is rotated to the semi-locked position, the tool 200 inserted in the tool accommodating cavity 121 is unlocked by the first transmission structure, and the support accessory 300 inserted at the front end of the mounting sleeve 11 is locked by the second transmission structure; that is, the support accessory 300 and the medical power handle 100 are still in a locked state, and the tool 200 and the medical power handle 100 are in an unlocked state. At this time, the support accessory 300 cannot move, and only the tool 200 can be freely inserted or removed, which is suitable for the situation where only the tool 200 needs to be replaced without replacing the support accessory 300. In this way, by rotating the lock sleeve 13 to the semi-locked position, only the tool 200 can be replaced without affecting the locking of the support accessory 300, which is convenient for quickly replacing the tool 200 to meet different surgical needs, and improves the flexibility and efficiency of the surgery.

[0088] When the lock sleeve 13 is rotated to be in the fully unlocked position, the tool 200 inserted in the tool accommodating cavity 121 is unlocked by the first transmission structure, and the supporting accessory 300 inserted in the front end of the installation sleeve 11 is unlocked by the second transmission structure. That is, the tool 200 is unlocked from the power transmission member 12, and the supporting accessory 300 is unlocked from the installation sleeve 11 and the lock sleeve 13 respectively, so that the tool 200 and the supporting accessory 300 are respectively unlocked from the medical power handle 100. At this time, the tool 200 and the supporting accessory 300 can be freely inserted or removed, which is suitable for the situation where both the tool 200 and the supporting accessory 300 need to be installed or removed. In this way, by rotating the lock sleeve 13 to the fully unlocked position, the tool 200 and the supporting accessory 300 can be unlocked at the same time, and the operation is quick and convenient.

[0089] By rotating the locking sleeve 13, the locking or unlocking actions of the tool 200 and the supporting accessory 300 with the medical power handle 100 can be integrated together. When it is necessary to unlock the supporting accessory 300 and the tool 200 at the same time, or unlock the supporting accessory 300 and the tool 200 at the same time, or unlock or lock the tool 200 alone, the different connection states of the tool 200 and the supporting accessory 300 with the handle assembly can be achieved by simply switching the locking sleeve 13 between different gears, which can meet the operator's needs for different working conditions, has a simple structure, is easy to operate, and improves work efficiency; and, when the tool 200 needs to be replaced alone, it will not affect the locking of the supporting accessory 300, thereby saving the time cost of replacing the tool 200.

[0090] See also Fig. 9 and Fig.10In some embodiments, the first transmission structure includes: a first guide groove 111 and a gear locking member 18, wherein the first guide groove 111 is provided on the locking sleeve 13 or the mounting sleeve 11, and a plurality of locking groove portions are spaced apart along the guide edge of the first guide groove 111, and each of the locking groove portions corresponds to a gear position; the gear locking member 18 is cooperatively provided in the first guide groove 111, and the gear locking member 18 is configured to: move along the guide direction of the first guide groove 111 when the locking sleeve 13 rotates; when the locking sleeve 13 is in any of the gear positions among the fully locked position, the half locked position and the fully unlocked position, the gear locking member 18 is embedded in the corresponding locking groove portion.

[0091] Specifically, the first guide groove 111 guides the gear locking member 18 to ensure that the gear locking member 18 can move smoothly along a predetermined path when the lock sleeve 13 rotates. When the lock sleeve 13 rotates, the gear locking member 18 located in the first guide groove 111 can move along the guide direction of the first guide groove 111 and can be embedded in the corresponding locking groove portion, thereby realizing the switching between various gears. The locking groove portions on the first guide groove 111 are arranged at intervals, and each locking groove portion corresponds to a gear position (for example, the full locking position, the half locking position and the full unlocking position each correspond to a locking groove portion), which is conducive to the gear locking member 18 switching between various locking groove portions. In this example, the gear locking member 18 adopts a spherical member, which is conducive to its smooth switching of gears between various locking groove portions.

[0092] In some embodiments, the first guide groove 111 passes through the peripheral side wall of the mounting sleeve 11, and the first guide groove 111 is a cylindrical spiral groove (see Fig.10 ); The first transmission structure further includes: a second guide groove 131 and a movable sleeve 15, wherein the second guide groove 131 (see Figures 13 to 16 ), which is arranged on the inner wall of the lock sleeve 13 and extends along the axial direction of the lock sleeve 13, and the gear locking member 18 partially extends into the second guide groove 131; the movable sleeve 15 (see Figure 5 and Fig.17 ), is arranged in the installation sleeve 11, and is movably mounted outside the power transmission member 12, the movable sleeve 15 locks the tool 200 by moving along the first axial direction of the power transmission member 12 or unlocks the tool 200 by moving along the second axial direction of the power transmission member 12, and a limiting ring groove 151 is circumferentially arranged on the outer peripheral wall of the movable sleeve 15, and the gear locking member 18 partially extends into the limiting ring groove 151; when the locking sleeve 13 rotates, the gear locking member 18 drives the movable sleeve 15 to move along the axial direction of the power transmission member 12 under the joint guiding action of the first guide groove 111, the second guide groove 131 and the limiting ring groove 151.

[0093] Specifically, in this example, the first axial direction of the power transmission member 12 is the direction toward the proximal end of the power transmission member 12, that is, the direction toward the proximal end of the medical power handle 100; the second axial direction of the power transmission member 12 is opposite to the first axial direction, that is, the second axial direction is the direction toward the distal end of the power transmission member 12, that is, the direction toward the distal end of the medical power handle 100. The first guide groove 111 penetrates the peripheral side wall of the mounting sleeve 11 in the form of a cylindrical spiral groove, that is, the axial direction of the first guide groove 111 overlaps with the axial direction of the mounting sleeve 11; Figure 8 In the example, the first guide groove 111 covers a range of less than 180° in the circumferential direction, so the first guide groove 111 looks roughly like an inclined groove that is inclined relative to the axial direction of the mounting sleeve 11 (that is, the extension direction of the first guide groove 111 is inclined to the axis of the mounting sleeve 11), so that the gear locking member 18 can climb or descend along the spiral groove on the mounting sleeve 11; the second guide groove 131 is arranged on the inner wall of the locking sleeve 13 in the form of axial extension, providing a guide constraint for the axial movement of the gear locking member 18, so that the gear locking member 18 can move along the axial direction of the locking sleeve 13; a limiting annular groove 151 is arranged on the outer circumferential wall of the movable sleeve 15 along the circumferential direction (see Fig.13 ), the limiting annular groove 151 allows the gear locking member 18 to transmit power to the movable sleeve 15, ensuring that the gear locking member 18 can accurately drive the movable sleeve 15 to move during the movement process. The movable sleeve 15 moves along the axial direction of the power transmission member 12 to achieve locking and unlocking of the tool 200. The gear locking member 18 is located in the second guide groove 131, the first guide groove 111 and the limiting annular groove 151 at the same time (see Figure 7 ), under the joint guiding action of the first guide groove 111, the second guide groove 131 and the limiting ring groove 151, the gear locking member 18 can convert the circumferential rotation of the locking sleeve 13 into the axial movement of the movable sleeve 15, thereby realizing reliable locking or unlocking of the tool 200.

[0094] The lock sleeve 13 is sleeved outside the installation sleeve 11, and the movable sleeve 15 is located inside the installation sleeve 11. In this embodiment, (see Fig.14 and Fig.16) Two second guide grooves 131 are symmetrically arranged on the locking sleeve 13, and the second guide grooves 131 extend along the axial direction of the locking sleeve 13, and the second guide grooves 131 are arc-shaped along the cross-section perpendicular to the locking sleeve 13, and the notch of the second guide groove 131 is connected with the interior of the locking sleeve 13, and the second guide groove 131 allows the gear locking member 18 to be axially movable inside the locking sleeve 13; two first guide grooves 111 are also correspondingly arranged on the mounting sleeve 11, when the locking sleeve 13 rotates relative to the mounting sleeve 11, the gear locking member 18 located in the first guide groove 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 movable sleeve 15; the limiting ring groove 151 is circumferentially arranged at the rear end of the movable sleeve 15, and the front end of the movable sleeve 15 is close to the sliding sleeve 14. When the lock sleeve 13 is rotated, the gear locking member 18 moves along the second guide groove 131 as the lock sleeve 13 rotates, and is converted into an axial movement of the installation sleeve 11 under the action of the first guide groove 111 of the installation sleeve 11, and because the gear locking member 18 is also in the limiting ring groove 151 of the moving sleeve 15, it can synchronously drive the moving sleeve 15 to move axially on the power transmission member 12. The gear locking member 18 is simultaneously located in the second guide groove 131, the first guide groove 111 and the limiting ring groove 151. This multiple constraint and guide mechanism makes the locking process more accurate and reliable, and through synergy, the rotation of the lock sleeve 13 is converted into the movement of the moving sleeve 15.

[0095] In some other embodiments, the first guide groove 111 is formed on the inner wall of the locking sleeve 13, and the first guide groove 111 is a cylindrical spiral groove; the first transmission structure further includes: a second guide groove 131 and a movable sleeve 15, the second guide groove 131 passes through the peripheral side wall of the mounting sleeve 11 and extends along the axial direction of the mounting sleeve 11; the movable sleeve 15 is arranged in the mounting sleeve 11 and is movably sleeved outside the power transmission member 12, and the movable sleeve 15 is moved along the first axial direction of the power transmission member 12. The movable sleeve 15 is moved in the second axial direction to lock the tool 200 or is moved in the second axial direction of the power transmission member 12 to unlock the tool 200. A limiting ring groove 151 is circumferentially arranged on the outer wall of the movable sleeve 15, and the gear locking member 18 partially extends into the limiting ring groove 151. When the locking sleeve 13 rotates, the gear locking member 18 drives the movable sleeve 15 to move in the axial direction of the power transmission member 12 under the joint guiding action of the first guide groove 111, the second guide groove 131 and the limiting ring groove 151.

[0096] Specifically, different from the above-mentioned embodiment, in this embodiment, the first guide groove 111 is opened on the inner wall of the locking sleeve 13 in the form of a cylindrical spiral groove, so that the gear locking member 18 can climb or descend along the spiral groove on the locking sleeve 13; the second guide groove 131 extends axially through the peripheral side wall of the mounting sleeve 11, providing a guiding constraint for the axial movement of the gear locking member 18, so that the gear locking member 18 can move along the axial direction of the mounting sleeve 11; the limiting ring groove 151 allows the gear locking member 18 to transmit power to the movable sleeve 15, ensuring that the gear locking member 18 can accurately drive the movable sleeve 15 to move during the movement process, and the locking and unlocking of the tool 200 can be achieved by moving the movable sleeve 15 along the axial direction of the power transmission member 12. Under the joint guiding action of the first guide groove 111, the second guide groove 131 and the limiting ring groove 151, the gear locking member 18 can convert the circumferential rotation of the locking sleeve 13 into the axial movement of the movable sleeve 15, thereby realizing reliable locking or unlocking of the tool 200. That is, when the locking sleeve 13 is rotated, the gear locking member 18 will move along the first guide groove 111 with the rotation of the locking sleeve 13, and will be converted into axial movement along the mounting sleeve 11 under the action of the second guide groove 131 of the mounting sleeve 11, and because the gear locking member 18 is also in the limiting ring groove 151 of the movable sleeve 15, it can synchronously drive the movable sleeve 15 to move axially on the power transmission member 12.

[0097] See also Fig.10 In the above embodiment, the multiple locking groove portions include a full locking groove portion 111c, a half locking groove portion 111b and a full unlocking groove portion 111a; the full locking groove portion 111c and the full unlocking groove portion 111a on the first guide groove 111 are respectively located at the two ends of the first guide groove 111, and the half locking groove portion 111b is located between the full locking groove portion 111c and the full unlocking groove portion 111a; when the locking sleeve 13 is located in the full locking position, the gear locking member 18 is embedded in the full locking groove portion 111c; when the locking sleeve 13 is located in the half locking position, the gear locking member 18 is embedded in the half locking groove portion 111b; when the locking sleeve 13 is located in the full unlocking position, the gear locking member 18 is embedded in the full unlocking groove portion 111a.

[0098] Specifically, three locking grooves may be arranged at intervals on the inner side wall of the first guide groove 111, each locking groove corresponds to a gear position, and there is a transition portion between adjacent locking grooves, the locking groove is an inner arc structure, and the transition portion is an outer arc structure, and each locking groove is adapted to the gear locking member 18, so that the gear locking member 18 can smoothly switch between various gear positions in the first guide groove 111 as the locking sleeve 13 rotates. In addition, by switching the position of the gear locking member 18 between the full locking groove 111c, the half locking groove 111b and the full unlocking groove 111a, different locking states of the support attachment 300 and the cutter 200 with the medical power handle 100 can be achieved respectively. The fully unlocking groove portion 111a and the fully locking groove portion 111c are respectively located at the two ends of the first guide groove 111. This layout ensures that there are clear starting and ending positions during the adjustment process, which is convenient for the operator to accurately perform unlocking and locking operations, and is conducive to rapid replacement or disassembly. The semi-locking groove portion 111b is located between the fully locked groove portion 111c and the fully unlocking groove portion 111a, so that the operator can easily switch the gear locking member 18 between the fully locked groove portion 111c, the semi-locked groove portion 111b and the fully unlocking groove portion 111a by rotating the locking sleeve 13 according to specific needs, which can facilitate rapid replacement of the tool changer 200 without disassembling the support attachment 300. The design of the first guide groove 111 makes the locking and unlocking process of the tool 200 easier. The user can switch between different gears by simply rotating the locking sleeve 13, thereby improving work efficiency. In addition, the design of the first guide groove 111 and its different locking groove positions not only improves the accuracy and efficiency of the handle operation, but also enhances the applicability and flexibility.

[0099] It is worth mentioning that the movable sleeve can lock or tighten the tool by moving along the power transmission member by using existing steel ball locking or elastic clamp arm locking. The following embodiments, combined with the accompanying drawings, illustrate one implementation of "the movable sleeve moves along the first axial direction of the power transmission member to lock the tool or moves along the second axial direction of the power transmission member to unlock the tool":

[0100] See also Figures 5 to 8In a possible embodiment, the first transmission structure also includes: a tool locking member 17, a sleeve 14 and a sleeve elastic member 22, wherein the tool locking member 17 is movably embedded in the peripheral side wall of the power transmission member 12 to lock or unlock the tool 200 inserted in the tool accommodating cavity 121; the sleeve 14 is slidably mounted outside the power transmission member 12; the sleeve elastic member 22 is used to apply an elastic force along a first axial direction to the sleeve 14; the sleeve 14 moves along the first axial direction and pushes the tool locking member 17 to move along a locking path, so that the tool locking member 17 partially enters the tool accommodating cavity 121 and locks the tool 200 inserted in the tool accommodating cavity 121; the sleeve 14 moves along the second axial direction under the push of the movable sleeve 15 to avoid the path of the tool locking member 17 unlocking the tool 200.

[0101] Specifically, the sliding sleeve 14 is slidably mounted outside the power transmission member 12, and the sliding sleeve 14 is located inside the mounting sleeve 11. Due to the effect of the gear locking member 18, the rotating locking sleeve 13 can make the movable sleeve 15 move along the axial direction of the power transmission member 12, thereby making the sliding sleeve 14 move along the axial direction. When the locking sleeve 13 is rotated to the fully locked position (see Figure 6 ), the sliding sleeve 14 can move along the first axial direction and push the tool locking member 17 to move along the locking path, so that the tool locking member 17 partially enters the tool accommodating cavity 121 to lock the tool 200; when the locking sleeve 13 is rotated from the full locking position to the half locking position (see Figure 7 ) or fully unlocked position (see Figure 8 ), the sliding sleeve 14 can move along the second axial direction (opposite to the first axial direction) under the action of the movable sleeve 15, so that the sliding sleeve 14 avoids the path of the tool locking member 17 unlocking the tool 200. The tool locking member 17 is not blocked by the sliding sleeve 14, and can unlock the tool 200 along the path of unlocking the tool 200, so that the tool 200 can be removed from the tool accommodating cavity 121 to unlock the tool 200. For ease of understanding, it can be considered that the path of the tool locking member 17 unlocking the tool 200 and the locking path of the tool 200 can be overlapping but opposite paths.

[0102] See also Fig.11 and Fig.12It can be understood that a locking member installation hole 122 connected to the tool accommodating cavity 121 is provided on the outer wall of the power transmission member 12, and the tool locking member 17 moves along the locking member installation hole 122, partially enters the tool accommodating cavity 121 and is embedded in the locking groove 210 provided on the outer wall of the tool 200 to lock the tool 200, or completely withdraws from the tool accommodating cavity 121 to unlock the tool 200. Among them, 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. In this example, the tool locking member 17 can be a spherical member, 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 installation hole 122 to enter and exit the tool accommodating cavity 121.

[0103] See also Fig.12 In this example, two locking member installation holes 122 are symmetrically provided on the outer wall of the power transmission member 12 along its radial direction. The locking member installation holes 122 are connected to the tool accommodating cavity 121 inside the power transmission member 12. The tool locking member 17 moves along the axial direction of the locking member installation holes 122 (i.e., along the radial direction of the power transmission member 12). Rotating the locking sleeve 13 can make the sliding sleeve 14 move along the axial direction. When the sliding sleeve 14 moves to cover the locking member installation holes 122, the tool locking member 17 is pushed into the tool accommodating cavity 121 and embedded in the locking groove 210. At this time, the tool 200 is locked (see Figure 6 ); When the sleeve 14 moves to expose the locking member mounting hole 122, the tool locking member 17 can move radially and exit the locking groove 210 and the tool accommodating cavity 121, and the tool 200 can be freely inserted or removed (see Figure 7 and Figure 8 ).

[0104] The sleeve elastic member 22 is sleeved outside the power transmission member 12 and is used to apply an elastic force along the first axial direction to the sleeve 14 so that the position of the sleeve 14 is maintained at a normal position. 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 (see Figure 6 The sliding sleeve 14 is located at the distal end of the movable sleeve 15. When the movable sleeve 15 moves along the second axial direction (overcoming the elastic force of the sliding sleeve elastic member 22), it can push the sliding sleeve 14 to move along the second axial direction, push the sliding sleeve 14 away from the normal position, and unlock the tool 200 inserted in the tool accommodating cavity 121 (see Figure 7 and Figure 8). Specifically, in this example, the sleeve elastic member 22 is a spring, a disc spring or other type of compression spring sleeved outside the power transmission member 12, and the two ends of the sleeve elastic member 22 are respectively in contact with the shoulder of the power transmission member 12 and the sleeve 14. In this way, the elastic force applied by the sleeve elastic member 22 can keep the tool locking member 17 in a state of keeping the tool 200 locked. If the tool 200 is to be unlocked, it is necessary to overcome the elastic force 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.

[0105] By turning the lock sleeve 13 to the fully locked position (see Figure 6 ), the movable sleeve 15 can be moved along the first axial direction, so that the sliding sleeve 14 can also move along the first axial direction under the action of the sliding sleeve elastic member 22, and reach the normal position (that is, the sliding sleeve 14 covers the locking member installation hole 122), so that the sliding sleeve 14 pushes the tool locking member 17 to at least partially enter the tool accommodating cavity 121 and embed into the locking groove 210 of the tool 200, and the tool 200 is axially locked and cannot be pulled out, thereby achieving the locking of the tool 200;

[0106] By turning the lock sleeve 13 to the semi-locked position (see Figure 7 ), the movable sleeve 15 can be moved along the second axial direction (opposite to the first axial direction), and the movable sleeve 15 pushes the sliding sleeve 14 to move along the second axial direction, so that the sliding sleeve 14 is in a state of exposing the locking member installation hole 122, that is, avoiding the path of the tool locking member 17 unlocking the tool 200, and the tool locking member 17 can freely enter and exit the tool accommodating cavity 121, so that the tool 200 can be unlocked, and the tool 200 can move axially and escape freely;

[0107] By turning the lock sleeve 13 to the fully unlocked position (see Figure 8 ), the movable sleeve 15 can continue to move along the second axial direction (opposite to the first axial direction), and the movable sleeve 15 pushes the sliding sleeve 14 to continue to move along the second axial direction, so that the sliding sleeve 14 is close to the distal end of the power transmission member 12. At this time, since the sliding sleeve 14 is still in a state of exposing the locking member mounting hole 122, the tool 200 can remain unlocked.

[0108] It should be noted that the inner diameter of the sleeve 14 is adapted to the outer diameter of the power transmission member 12, there is a gap between the inner diameter of the moving sleeve 15 and the outer diameter of the power transmission member 12, and the inner diameter of the moving sleeve 15 is larger than the inner diameter of the sleeve 14 and smaller than the outer diameter of the sleeve 14. Specifically, the inner diameter of the sleeve 14 is adapted to the outer diameter of the power transmission member 12, so that when the sleeve 14 slides on the power transmission member 12, the locking member installation hole 122 can be covered or exposed; there is a gap between the inner diameter of the moving sleeve 15 and the outer diameter of the power transmission member 12, when the moving sleeve 15 pushes the sleeve 14 to expose the locking member installation hole 122, the tool locking member 17 is allowed to move in the radial direction; the inner diameter of the moving sleeve 15 is larger than the inner diameter of the sleeve 14 and smaller than the outer diameter of the sleeve 14, so that the moving sleeve 15 can push the sleeve 14 to move when sliding.

[0109] It can be understood that the distal end and the proximal end of the power transmission member 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 moving sleeve 15 are located between the first bearing 20 and the second bearing 21. Among them, the first bearing 20 is sleeved on the distal end of the power transmission member 12, and the second bearing 21 is sleeved on the proximal end of the power transmission member 12. The power transmission member 12 is rotatably connected to the mounting sleeve 11 through the first bearing 20 and the second bearing 21.

[0110] See also Figure 6 In the above embodiment, the first transmission structure also includes a movable sleeve elastic member 23, and the movable sleeve elastic member 23 is used to apply a force along the first axial direction to the movable sleeve 15. The movable sleeve elastic member 23 is sleeved on the outside of the sliding sleeve elastic member 22, and the two ends of the movable sleeve elastic member 23 are respectively abutted between the first bearing 20 and the movable sleeve 15. The movable sleeve elastic member 23 makes the movable sleeve 15, when there is no external force, the end of the movable sleeve 15 away from the movable sleeve elastic member 23 is always in contact with the outer ring of the second bearing 21, and when the power transmission member 12 rotates, the movable sleeve elastic member 23 and the movable sleeve 15 are stationary. At the same time, the movable sleeve elastic member 23 can prevent the movable sleeve 15 from moving when the tool 200 is locked, which is beneficial to noise reduction and reliability improvement.

[0111] The medical power handle 100 also includes a tool positioning member 19 and an elastic sleeve 16. The tool positioning member 19 is embedded in the peripheral side wall of the power transmission member 12. When the tool 200 is inserted into the tool accommodating cavity 121, the tool positioning member 19 partially enters the tool accommodating cavity 121 and abuts against the power part 220 at the rear of the tool 200. The elastic sleeve 16 is fixedly mounted outside the power transmission member 12 and is located between the power transmission member 12 and the movable sleeve 15. The elastic sleeve 16 limits the radial movement of the tool positioning member 19.

[0112] For details, see Fig.11 and Fig.12A tool positioning hole 123 is provided on the peripheral side wall of the power transmission member 12 along its radial direction, and the tool positioning hole 123 is connected to the tool accommodating cavity 121 inside the power transmission member 12. In this example, two tool positioning holes 123 are symmetrically arranged on the power transmission member 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, and the tool positioning member 19 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 ), in this example, the tool positioning member 19 is a spherical member. The power unit 220 is a flat square structure. The 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 transmission member 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.

[0113] See also Figure 6 An elastic sleeve 16 is provided on the fixed sleeve of the power transmission member 12, and the elastic sleeve 16 is located between the power transmission member 12 and the movable sleeve 15, and partially blocks the tool positioning hole 123. The elastic sleeve 16 limits the radial movement path of the tool positioning member 19 to prevent the tool positioning member 19 from slipping out of the locking member mounting hole 122.

[0114] It is worth mentioning that 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 medical power handle 100 further comprises 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 medical power handle 100.

[0115] The above describes how the medical power handle 100 locks and unlocks the cutter 200 by rotating the lock sleeve 13. The following describes how the medical power handle 100 locks and unlocks the support attachment 300 by rotating the lock sleeve 13:

[0116] The second transmission structure includes a first circumferential limit portion 112 (see FIG. Fig.10 ), and a first axial limiting portion 132 (see Fig.13 ), the first circumferential limiting portion 112 is used to be aligned with the second circumferential limiting portion 311 (see Fig.21 ) cooperates to circumferentially limit the support accessory 300; when the locking sleeve 13 is in the full locking position or the semi-locking position, the first axial limiting portion 132 and the second axial limiting portion 312 of the support accessory 300 (see Fig. 20 ) are at least partially overlapped and facing each other in the circumferential direction to prevent the support accessory 300 from being separated from the mounting sleeve 11; when the locking sleeve 13 is in the fully unlocked position, the first axial limiting portion 132 and the second axial limiting portion 312 are staggered in the circumferential direction to enable the support accessory 300 to be axially separated from or inserted into the mounting sleeve 11.

[0117] 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. Two second circumferential limiting portions 311 (inner flat squares in this example) of the supporting accessory 300 are symmetrically arranged, and correspondingly, two first circumferential limiting portions 112 (outer flat squares in this example) of the mounting sleeve 11 are symmetrically arranged. In this way, the force balance of the assembly connection between the supporting sleeve 310 and the mounting sleeve 11 can be ensured.

[0118] When the locking sleeve 13 is rotated to the fully locked position, the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the supporting accessory 300 can at least partially overlap and face each other in the circumferential direction, so as to prevent the supporting accessory 300 from being separated from the mounting sleeve 11, thereby locking the supporting accessory 300 and the medical power handle 100;

[0119] When the locking sleeve 13 is rotated to the semi-locked position, the first axial limiting portion 132 of the locking sleeve 13 and the second axial limiting portion 312 of the supporting accessory 300 are still in an overlapping and facing state in the circumferential direction, that is, the supporting accessory 300 is still blocked from being separated from the mounting sleeve 11, so that the supporting accessory 300 and the medical power handle 100 are still in a locked state;

[0120] When the locking sleeve 13 is rotated to the fully unlocked position, the first axial limit portion 132 of the locking sleeve 13 and the second axial limit portion 312 of the support accessory 300 can be offset in the circumferential direction, so that the support accessory 300 can be axially disengaged from or plugged into the mounting sleeve 11, thereby unlocking the support accessory 300 and the medical power handle 100.

[0121] In addition, in this example, two second guide grooves 131 are arranged on the locking sleeve 13 in a relatively opposite manner (see Fig.16 ), accordingly, two first guide grooves 111 are also provided on the mounting sleeve 11; two first axial limiting portions 132 are relatively provided on the locking sleeve 13 (see Fig.15 ), two second axial limiting portions 312 are also provided on the supporting attachment 300 (see Fig. 22 ); two first circumferential limiting portions 112 are relatively arranged on the locking sleeve 13, and two second circumferential limiting portions 311 are also arranged on the supporting attachment 300 (see Fig. 22 ); the center line of the first circumferential limit portion 112 (the outer flat square in this example) on the same side of the mounting sleeve 11 is collinear with the center line of the first guide groove 111, that is, the center line of the first circumferential limit portion 112 is collinear with the semi-locking groove portion 111b of the first guide groove 111; the center connection line of the two second guide grooves 131 on the locking sleeve 13 and the center connection line of the two first axial limit portions 132 have a set angle (45° in this example), and the relative position of the second guide groove 131 and the first axial limit portion 132 (protrusion) on the locking sleeve 13 determines the state of the gear adjustment.

[0122] See also Figure 4It 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 medical power 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 the smooth rotation of the locking sleeve 13 is ensured, and the jamming or damage caused by the gap being too small is avoided; moreover, the contact area between the connecting parts is increased, the connection strength between the support accessory 300 and the medical power handle 100 is enhanced, and 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.

[0123] It is worth mentioning that one of the first axial limiting portion 132 and the second axial limiting portion 312 is an annular limiting portion having an insertion notch 312a (see Fig. 20 ), the plug-in notch 312a extends from one side of the annular limiting portion to the other side of the annular limiting portion along the axial direction. When the locking sleeve 13 is in the fully unlocked position, another limiting portion can pass through the plug-in notch 312a along the axial direction to enable the medical power handle 100 and the supporting accessory 300 to be disengaged or plugged in.

[0124] 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 having an insertion notch 312a. When the locking sleeve 13 is in the fully 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 annular limiting portion axially, so that the supporting accessory 300 can be disengaged from or plugged into the mounting sleeve 11. When the locking sleeve 13 is rotated to the fully locked position, the first axial limiting portion 132 of the locking sleeve 13 can be screwed into the annular limiting portion from the insertion notch 312a, and the supporting accessory 300 is restricted from axial movement and cannot be disengaged. When the locking sleeve 13 is rotated to the semi-locked position, the first axial limiting portion 132 of the locking sleeve 13 is still located in the annular limiting portion, and the supporting accessory 300 is restricted from axial movement and cannot be disengaged.

[0125] In this example, two second axial limiting portions 312 (annular limiting portions with a plug-in notch 312a in this example) of the supporting attachment 300 are symmetrically arranged, and the center lines of the two second circumferential limiting portions 311 (inner flat squares in this example) and the center lines of the plug-in notches 312a of the two second axial limiting portions 312 are perpendicular to each other (see Fig. 22 ), accordingly, two first axial limiting portions 132 (protrusions) of the locking sleeve 13 are symmetrically arranged, so that the force balance between the second axial limiting portion 312 of the supporting attachment 300 and the first axial limiting portion 132 (protrusions) of the locking sleeve 13 can be ensured, making locking and unlocking more reliable and stable.

[0126] The gear adjustment process of the medical power handle 100 is as follows:

[0127] When the lock sleeve 13 is rotated to the fully unlocked position, the gear locking member 18 enters the fully unlocked groove portion 111a, the sliding sleeve 14 approaches the distal end of the power transmission member 12, and the sliding sleeve 14 is pushed by the movable sleeve 15 to completely expose the locking member mounting hole 122, the tool locking member 17 can move freely in radial direction, and the tool 200 can be freely inserted or pulled out; and at this time, the plugging notch 312a of the second axial limiting portion 312 (an annular limiting portion with a plugging notch 312a) of the support accessory 300 is aligned with the first axial limiting portion 132 (a raised portion in this example) of the lock sleeve 13, and the second circumferential limiting portion 311 (an inner flat square in this example) on the support accessory 300 cooperates with the first circumferential limiting portion 112 (an outer flat square in this example) on the mounting sleeve 11 to limit the circumferential rotation of the support accessory 300, but the support accessory 300 can be freely inserted or pulled out along the axial direction;

[0128] After the tool 200 and the supporting accessory 300 are inserted in place, the locking sleeve 13 is rotated to the semi-locking position, so that the gear locking member 18 enters the semi-locking groove portion 111b, and the movable sleeve 15 moves toward the proximal end of the medical power handle 100 under the action of the gear locking member 18. Correspondingly, the sliding sleeve 14 also moves toward the proximal end of the medical power handle 100 under the action of the sliding sleeve elastic member 22, but the sliding sleeve 14 does not cover the locking member mounting hole 122, the tool locking member 17 can still move freely radially, and the tool 200 can still be freely inserted or pulled out; at this time, the first axial limiting portion 132 (protruding portion) on the locking sleeve 13 has been transferred from the plugging notch 312a of the second axial limiting portion 312 (annular limiting portion with a plugging notch 312a) of the supporting accessory 300 into the annular limiting portion, and the supporting accessory 300 is locked and cannot be pulled out. In this state, only the tool 200 can be replaced, and the supporting accessory 300 cannot be pulled out;

[0129] When the locking sleeve 13 continues to be rotated to the full locking position, the gear locking member 18 enters the full locking groove portion 111c, the movable sleeve 15 is moved to abut against the second bearing 21, and the sliding sleeve 14 is moved to cover the locking member mounting hole 122 under the action of the sliding sleeve elastic member 22, so that the tool locking member 17 is pressed inward into the locking groove 210 of the tool 200 to lock the tool 200; at this time, the first axial limiting portion 132 on the locking sleeve 13 is still in the second axial limiting portion 312 (annular limiting portion) of the support accessory 300, that is, the support accessory 300 is still in a locked state; in this way, the tool 200 and the support accessory 300 are both in a locked state, so that the medical power handle 100 can operate normally.

[0130] It should be noted that, since the first guide groove 111 on the installation sleeve 11 is right-handed, the locking process is to rotate the lock sleeve 13 clockwise, and the unlocking process is to rotate the lock sleeve 13 counterclockwise. In other embodiments, if the first guide groove 111 on the installation sleeve 11 is left-handed, the locking process is to rotate the lock sleeve 13 counterclockwise, and the unlocking process is to rotate the lock sleeve 13 clockwise.

[0131] Based on the same concept, the present application also provides a medical kit, including a matching medical power handle 100 and a supporting accessory 300, wherein the medical power handle 100 is the medical power handle 100 described above.

[0132] 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.

[0133] To sum up, the medical power handle 100 and the medical kit provided by the present invention can integrate the locking or unlocking actions of the tool 200 and the supporting accessory 300 with the medical power handle 100 by rotating the locking sleeve 13. When it is necessary to unlock the supporting accessory 300 and the tool 200 at the same time, or unlock the supporting accessory 300 and the tool 200 at the same time, or unlock or lock the tool 200 separately, the different connection states of the tool 200 and the supporting accessory 300 with the handle assembly can be achieved only by switching the locking sleeve 13 in different gears, which can meet the operator's needs for different working conditions, has a simple structure, is easy to operate, and improves work efficiency; and, when the tool 200 needs to be replaced separately, it will not affect the locking of the supporting accessory 300, thereby saving the time cost of replacing the tool 200.

[0134] 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 medical power handle, used to be detachably connected to a tool and drive the tool, wherein the front end of the medical power handle is detachably connected to a support attachment having a tool support channel, characterized in that: The medical power handle comprises: A mounting sleeve, used for plugging with the supporting accessory; A power transmission member is coaxially arranged in the mounting sleeve and can rotate around its own axis, wherein a tool receiving cavity for inserting a tool is axially arranged inside the power transmission member, and the tool receiving cavity is used to communicate with the tool supporting channel; A locking sleeve, a first transmission structure and a second transmission structure, wherein the locking sleeve is arranged outside the mounting sleeve and can be operably rotated around the axis of the mounting sleeve, and the rotational position of the locking sleeve includes a fully locked position, a semi-locked position and a fully unlocked position, the locking sleeve locks or unlocks the tool through the first transmission structure, and the locking sleeve locks or unlocks the supporting accessory through the second transmission structure; When the locking sleeve is in the fully locked position, the first transmission structure is locked and inserted into the tool in the tool accommodating cavity, and the second transmission structure is locked and inserted into the supporting attachment at the front end of the mounting sleeve; When the locking sleeve is located at the semi-locking position, the first transmission structure unlocks the tool inserted in the tool accommodating cavity, and the second transmission structure locks the supporting accessory inserted at the front end of the mounting sleeve; When the locking sleeve is located at the fully unlocked position, the first transmission structure unlocks the tool inserted in the tool accommodating cavity, and the second transmission structure unlocks the supporting attachment inserted at the front end of the mounting sleeve.

2. The medical power handle according to claim 1, characterized in that: The first transfer structure comprises: A first guide groove is provided on the locking sleeve or the mounting sleeve, wherein a plurality of locking groove portions are provided at intervals along the guide edge of the first guide groove, and each locking groove portion corresponds to a gear position; a gear locking member, which is cooperatively arranged in the first guide groove, and the gear locking member is configured to move along the guide direction of the first guide groove when the locking sleeve rotates; When the locking sleeve is located at any one of the fully locked position, the half locked position and the fully unlocked position, the gear locking member is embedded in the corresponding locking groove portion.

3. The medical power handle according to claim 2, characterized in that: The first guide groove passes through the peripheral side wall of the mounting sleeve, and the first guide groove is a cylindrical spiral groove; the first transmission structure also includes: A second guide groove is provided on the inner wall of the lock sleeve and extends along the axial direction of the lock sleeve, and the gear locking member partially extends into the second guide groove; A movable sleeve is arranged in the installation sleeve and is movably sleeved outside the power transmission member. The movable sleeve locks the tool by moving along the first axial direction of the power transmission member or unlocks the tool by moving along the second axial direction of the power transmission member. A limiting ring groove is circumferentially arranged on the outer peripheral wall of the movable sleeve, and the gear locking member partially extends into the limiting ring groove; When the locking sleeve rotates, the gear locking member drives the moving sleeve to move along the axial direction of the power transmission member.

4. The medical power handle according to claim 2, characterized in that: The first guide groove is formed on the inner wall of the lock sleeve, and the first guide groove is a cylindrical spiral groove; the first transmission structure further includes: A second guide groove, penetrating through the peripheral side wall of the mounting sleeve and extending along the axial direction of the mounting sleeve; A movable sleeve is arranged in the installation sleeve and is movably sleeved outside the power transmission member. The movable sleeve locks the tool by moving along the first axial direction of the power transmission member or unlocks the tool by moving along the second axial direction of the power transmission member. A limiting ring groove is circumferentially arranged on the outer peripheral wall of the movable sleeve, and the gear locking member partially extends into the limiting ring groove; When the locking sleeve rotates, the gear locking member drives the moving sleeve to move along the axial direction of the power transmission member under the joint guiding action of the first guide groove, the second guide groove and the limiting ring groove.

5. The medical power handle according to claim 2, characterized in that: The multiple locking grooves include a full locking groove, a half locking groove and a full unlocking groove; the full locking groove and the full unlocking groove on the first guide groove are respectively located at two ends of the first guide groove, and the half locking groove is located between the full locking groove and the full unlocking groove; When the locking sleeve is located at the fully locked position, the gear locking member is embedded in the fully locked groove; When the locking sleeve is located at the semi-locking position, the gear locking member is embedded in the semi-locking groove; When the lock sleeve is located at the fully unlocked position, the gear locking member is embedded in the fully unlocked groove portion.

6. The medical power handle according to any one of claims 3 to 5, characterized in that: The first transfer structure also includes: A tool locking member, movably embedded in the peripheral side wall of the power transmission member, to lock or unlock the tool inserted in the tool accommodating cavity; A sliding sleeve, which is arranged outside the power transmission member; A sliding sleeve elastic member, used for applying an elastic force along a first axial direction to the sliding sleeve; The sliding sleeve moves along the first axial direction and pushes the tool locking member to move along the locking path, so that the tool locking member partially enters the tool accommodating cavity and locks the tool inserted in the tool accommodating cavity; The sliding sleeve moves along the second axial direction under the push of the moving sleeve to avoid the path of the tool locking member unlocking the tool.

7. The medical power handle according to claim 1, characterized in that: The second transmission structure includes a first circumferential limit portion provided on the mounting sleeve and a first axial limit portion provided at the front end of the locking sleeve. 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; When the locking sleeve is in the fully locked position or the semi-locked position, 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 fully unlocked 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.

8. The medical power handle according to claim 7, 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.

9. The medical power handle according to claim 8, characterized in that: Among the first axial limiting portion and the second axial limiting portion, one of the limiting portions is an annular limiting portion provided with an insertion notch, and the insertion notch extends from one side of the annular limiting portion to the other side of the annular limiting portion along the axial direction. When the locking sleeve is in the fully unlocked position, the other limiting portion can pass through the insertion notch along the axial direction to enable the medical power handle and the supporting accessory to be disengaged or plugged into each other.

10. A medical kit, characterized in that: It comprises a matching medical power handle and a supporting accessory, wherein the medical power handle is the medical power handle described in any one of claims 1-9.

Images