Kirschner wire chuck and bone dynamic drill

Abstract

This application discloses a Kirschner wire chuck and a bone-powered drill, relating to the field of medical device technology. The Kirschner wire chuck includes a chuck body, a clamping assembly, a locking assembly, and a handle mechanism. The chuck body is connected to a bone-powered handpiece. The clamping assembly is rotatably mounted on the chuck body and has a cavity along its rotation axis. The cavity holds the Kirschner wire, and the end of the clamping assembly is drively connected to the output end of the bone-powered handpiece. The locking assembly is sleeved on the clamping assembly and moves along its rotation axis to clamp or release the clamping assembly. The handle mechanism is mounted on the chuck body and deflects from the beginning to the end of the clamping assembly, and is connected to the locking assembly. Gripping the handle mechanism and deflecting it moves the locking assembly toward the beginning of the clamping assembly, causing the clamping assembly to clamp the Kirschner wire. This Kirschner wire chuck facilitates single-handed operation for clamping or releasing the Kirschner wire, improving drilling efficiency.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically a Kirschner wire chuck and bone dynamic drill. Background Technology

[0002] Kirschner wires are orthopedic internal fixation devices primarily used in fracture reduction, joint fusion, or deformity correction surgeries. They achieve stable fixation by penetrating the cortical bone. The Kirschner wire is clamped onto a bone-powered handpiece using a specialized chuck. During drilling, only about 20-30mm of the Kirschner wire protrudes from the chuck tip. After drilling to a certain depth, the chuck is released, moved backward, and then re-clamped. This process is repeated until the Kirschner wire reaches the desired depth.

[0003] In related techniques, the Kirschner wire chuck on the bone dynamic drill is typically used to clamp or loosen the Kirschner wire by rotating its locking ring. For example, after drilling to a certain depth, the locking ring is released, the bone dynamic drill is moved to a certain position, and then the locking ring is tightened. This can be done using a wrench or manually. However, the above-mentioned locking operation is cumbersome, especially when drilling deep holes, which seriously affects the efficiency and quality of the surgery. This problem urgently needs to be solved. Utility Model Content

[0004] The purpose of this application is to provide a Kirschner wire chuck and a bone-powered drill, which at least to some extent facilitates one-handed operation for clamping or loosening Kirschner wires and can improve drilling efficiency.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, this application provides a Kirschner wire chuck, comprising:

[0007] The clamp body is used to connect to the bone-powered mobile phone;

[0008] The clamping assembly is rotatably mounted on the clamping head body, and a cavity is provided in the direction of the rotation axis. The cavity is used to place Kirschner wires, and the end of the clamping assembly is used for transmission connection with the output end of the bone power handpiece.

[0009] A locking component, which is sleeved on the clamping component and moves along the rotation axis of the clamping component, is used to drive the clamping component to clamp or release.

[0010] A handle mechanism is provided on the chuck body and deflects along the direction from the first end to the last end of the clamping assembly, and is connected to the locking assembly;

[0011] Specifically, the gripping mechanism deflects the handle, causing the locking component to move toward the head end of the clamping component, thereby clamping the Kirschner wire.

[0012] As a further embodiment of this application, the first end of the clamping assembly has multiple clamping parts, each clamping part is arranged at intervals around the rotation axis of the clamping assembly, and the locking assembly has a pressing recess on the side facing the first end of the clamping assembly.

[0013] The drive locking assembly moves toward the head end of the clamping assembly and abuts the pressing recess against each clamping part, thereby driving each clamping part to move closer to the cavity.

[0014] As a further embodiment of this application, the clamping assembly includes a rotary seat and a spring sleeve, the rotary seat being rotatably mounted on the chuck body, and the end of the spring sleeve being coaxially inserted into the rotary seat.

[0015] The cavity is located inside the spring sleeve, each clamping part is located at the beginning of the spring sleeve, and the locking assembly is sleeved on the spring sleeve.

[0016] As a further embodiment of this application, the locking assembly includes a locking sleeve and an elastic element. The locking sleeve is sleeved on the spring clip and moves along the axis of the spring clip, and the pressing recess is located on the locking sleeve.

[0017] The elastic element is fitted onto the locking sleeve and elastically presses against the locking sleeve on the side opposite to the head end of the spring clip. The handle mechanism abuts against the side of the locking sleeve opposite to the elastic element.

[0018] As a further embodiment of this application, the handle mechanism includes a pusher, a gripper, and a pivot assembly. The fork on the pusher abuts against the ring of the locking sleeve. The end of the pusher away from the fork and the end of the gripper are rotatably connected to the chuck body via the pivot assembly.

[0019] The gripper rotates relative to the pusher to adjust the deflection angle along the direction from the beginning to the end of the adjusting clamping assembly, and is locked by the rotating shaft assembly.

[0020] As a further embodiment of this application, it also includes a transmission seat and at least one speed reduction assembly. The transmission seat is rotatably mounted on the chuck body opposite to the head end of the clamping assembly and is coaxial with the clamping assembly.

[0021] The end of the transmission seat facing away from the clamping assembly is used for transmission connection with the output end of the bone-powered mobile phone, and the end of the transmission seat facing the clamping assembly is connected to the clamping assembly through a reduction assembly.

[0022] As a further embodiment of this application, the reduction assembly includes a sun gear, multiple planet gears, an internal gear ring, and a planet carrier. The sun gear is coaxially connected to the transmission base and arranged coaxially with the internal gear ring.

[0023] Each planetary gear is arranged around the sun gear, with one side meshing with the sun gear and the other side meshing with the internal gear ring.

[0024] The planetary carrier is coaxially connected to the end of the clamping assembly and rotatably connected to each planetary gear.

[0025] As a further embodiment of this application, the planetary carrier includes a rotating sleeve and multiple pins, with the rotating sleeve coaxially sleeved at the end of the clamping assembly;

[0026] Each pin has one end connected to the rotating sleeve and the other end coaxially connected to the corresponding planetary gear.

[0027] As a further embodiment of this application, the chuck body includes a front cylinder and a rear cylinder, the clamping assembly is coaxially rotatably connected to the front cylinder, and the handle mechanism is rotatably connected to the front cylinder and extends into the front cylinder.

[0028] One end of the rear cylinder is inserted into the front cylinder, and the other end is used to insert into the bone-powered mobile phone. The transmission seat is rotatably connected to the rear cylinder, and the internal gear ring is coaxially inserted into the rear cylinder.

[0029] Secondly, this application provides a bone power drill, including a bone power handpiece and any of the Kirschner wire chucks provided in the first aspect disposed on the bone power handpiece.

[0030] According to this application, a Kirschner wire chuck and a bone-powered drill are provided, which have at least the following technical effects. The Kirschner wire chuck includes a chuck body, a clamping assembly, a locking assembly, and a handle mechanism. By connecting the chuck body to a bone-powered handpiece, the bone-powered handpiece provides rotational power to achieve drilling operations. The clamping assembly is rotatably mounted on the chuck body, and a cavity is formed in the direction of the rotation axis. A Kirschner wire is placed in the cavity. The end of the clamping assembly is connected to the output end of the bone-powered handpiece. The locking assembly is sleeved on the clamping assembly and moves along the rotation axis of the clamping assembly to drive the clamping assembly to clamp or release the clamping assembly. The handle mechanism is mounted on the chuck body and deflects in the direction from the first end to the last end of the clamping assembly and is connected to the locking assembly. By gripping the handle mechanism and deflecting the handle mechanism, the locking assembly is moved toward the first end of the clamping assembly so that the clamping assembly clamps the Kirschner wire.

[0031] Therefore, according to the Kirschner wire chuck provided in this application, by placing the Kirschner wire in the cavity of the clamping assembly, the Kirschner wire can move and adjust its length along the axial direction. By gripping or releasing the handle mechanism, the locking assembly and the clamping assembly can be used to clamp or release the Kirschner wire, which facilitates the clamping or releasing adjustment of the Kirschner wire by one hand. The operation is simple and convenient, and it can greatly improve drilling efficiency. Attached Figure Description

[0032] To facilitate understanding by those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0033] Figure 1A three-dimensional structural diagram of the Kirschner wire chuck provided in the embodiments of this application;

[0034] Figure 2 for Figure 1 A sectional view along section AA in the middle;

[0035] Figure 3 for Figure 2 A partial three-dimensional structural diagram of the middle spring clip and locking assembly;

[0036] Figure 4 for Figure 2 Another structural diagram of the middle part of the handle mechanism;

[0037] Figure 5 for Figure 2 A sectional view along section BB;

[0038] Figure 6 for Figure 2 A sectional view along the CC section;

[0039] Figure 7 for Figure 2 A partial schematic diagram showing the device in use;

[0040] Figure 8 for Figure 7 A magnified view of a section at point D.

[0041] Figure label:

[0042] 10. Kirschner wires;

[0043] 100. Chuck body; 110. Front cylinder; 120. Rear cylinder;

[0044] 200 Clamping assembly; 201 Cavity; 202 Clamping part; 210 Rotary seat; 220 Spring sleeve;

[0045] 300. Locking assembly; 301. Pressing recess; 310. Locking sleeve; 320. Elastic element;

[0046] 400. Handle mechanism; 410. Pushing component; 420. Grip component; 430. Rotating shaft assembly;

[0047] 500. Transmission seat;

[0048] 600. Reduction gear assembly; 610. Sun gear; 620. Planet gears; 630. Internal gear ring; 640. Planet carrier; 641. Rotating sleeve; 642. Pin. Detailed Implementation

[0049] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0050] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0052] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application; that is, the described embodiments are only a part of the embodiments of this application, and not all of them. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0055] Firstly, please refer to Figures 1 to 8 As shown, this application embodiment provides a Kirschner wire chuck, comprising:

[0056] The clamp body 100 is used to connect to the bone-powered mobile phone.

[0057] The clamping assembly 200 is rotatably mounted on the clamping body 100, and a cavity 201 is provided in the direction of the rotation axis. The cavity 201 is used to place the Kirschner wire 10, and the end of the clamping assembly 200 is used for transmission connection with the output end of the bone-powered handpiece.

[0058] The locking component 300 is sleeved on the clamping component 200 and moves along the rotation axis of the clamping component 200 to drive the clamping component 200 to clamp or release.

[0059] The handle mechanism 400 is disposed on the chuck body 100 and deflects along the direction from the first end to the last end of the clamping assembly 200, and is connected to the locking assembly 300.

[0060] Specifically, gripping the handle mechanism 400 and deflecting it causes the locking component 300 to move toward the head end of the clamping component 200, so that the clamping component 200 clamps the Kirschner wire 10.

[0061] In this embodiment, the Kirschner wire 10 can be a smooth, sharp stainless steel pin with different diameters (e.g., 0.7 mm to 4 mm) to accommodate different sizes and types of bone positioning. The bone-powered handpiece in this embodiment is used to provide electrical drive and is typically designed as a gun-type structure, enabling multiple functions such as drilling, reaming, grinding, and sawing.

[0062] In this embodiment, the clamp body 100 is generally in the form of a rotating body structure or a shell structure, and has a mounting cavity or mounting groove, etc. The end of the clamp body 100 can be connected to the output port of the bone power mobile phone by means of plugging, snapping or other methods.

[0063] In this embodiment, the clamping assembly 200 is generally a rotating body structure, with a cavity 201 for accommodating the Kirschner wire 10. The cavity 201 is opened along the axial direction of the clamping assembly 200. The clamping assembly 200 can be mounted on the chuck body 100 via bearings or a rotating structure, and can be arranged coaxially with the chuck body 100. The first end of the clamping assembly 200 is for the tip of the Kirschner wire 10 to pass through, and the second end of the clamping assembly 200 can be connected to the output end of the bone conduction handpiece via a reduction mechanism. At least a portion of the clamping assembly 200 can expand and contract radially.

[0064] In this embodiment, the locking component 300 is generally a rotating structure, which is sleeved on the clamping component 200 and moves along the rotation axis of the clamping component 200. When the locking component 300 moves towards the head end of the clamping component 200, a portion of the clamping component 200 can be radially reduced to clamp the Kirschner wire 10. When the locking component 300 moves towards the tail end of the clamping component 200, the action on the clamping component 200 can be released, and the clamping component 200 can expand radially back to its original position. Of course, the locking component 300 can also be inserted into the cavity 201 through its needle-like portion to achieve expansion and tightening of the Kirschner wire 10.

[0065] In this embodiment, the handle mechanism 400 can be rotatably mounted on the chuck body 100 via components such as a pivot and a pin. Its rotation axis is perpendicular to the rotation direction of the clamping assembly 200, meaning that the handle mechanism 400 can reciprocate along the direction from the first end to the last end of the clamping assembly 200. The handle mechanism 400 is connected to the locking assembly 300, such as by abutment or rotation, and is used to drive the locking assembly 300 to move on the clamping assembly 200, but does not interfere with the locking assembly 300 rotating together with the clamping assembly 200.

[0066] Specifically, combined Figure 1 , Figure 2 , Figure 7 , Figure 8 As shown, first install the chuck body 100 on the bone-powered handpiece, then insert the Kirschner wire 10 into the cavity 201. When drilling, only about 20-30mm of the front end of the chuck body 100 is exposed. Grip the handle mechanism 400 and deflect it to move the locking component 300 toward the head end of the clamping component 200 so that the clamping component 200 clamps the Kirschner wire 10. Then press the switch button on the bone-powered handpiece to drive the clamping component 200 and the Kirschner wire 10 to drill. After drilling to a certain depth, release the handle mechanism 400, move the bone-powered handpiece and the chuck body 100 backward a distance, then grip the handle mechanism 400 again and drill to a certain depth. Repeat this operation until the Kirschner wire 10 reaches the required depth.

[0067] Therefore, compared with the existing Kirschner wire chucks that use a screw-locking ring, the Kirschner wire chuck provided in this application allows the Kirschner wire 10 to be placed in the cavity 201 of the clamping assembly 200, and the Kirschner wire 10 can be moved along the axial direction to adjust its length. By gripping or releasing the handle mechanism 400, the locking assembly 300 and the clamping assembly 200 can be used to clamp or release the Kirschner wire 10, thus facilitating one-handed operation to clamp or release the Kirschner wire 10. The operation is simple and convenient, and it can greatly improve drilling efficiency.

[0068] In some embodiments, the first end of the clamping assembly 200 has a plurality of clamping portions 202, each clamping portion 202 being arranged at intervals around the rotation axis of the clamping assembly 200, and the locking assembly 300 having a pressing recess 301 on one side facing the first end of the clamping assembly 200.

[0069] The drive locking assembly 300 moves toward the head end of the clamping assembly 200 and causes the pressing recess 301 to abut against each clamping part 202, thereby driving each clamping part 202 to move closer to the cavity 201.

[0070] Specifically, such as Figure 2 , Figure 3 , Figure 7 As shown, the clamping part 202 can be a clamping block. At least two clamping parts 202 are connected to the first end of the clamping assembly 200 and are arranged at intervals around the rotation axis of the clamping assembly 200. There is a gap between adjacent clamping parts 202. Each clamping part 202 can be elastically deformed or deflected in the radial direction when subjected to radial force. The locking assembly 300 has a pressing recess 301 on the side facing the first end of the clamping assembly 200. It can be an inner conical surface, a shaped hole, etc. The cross-section of the pressing recess 301 gradually decreases towards the end of the clamping assembly 200, so that the pressing recess 301 and the clamping part 202 can be engaged by a bevel.

[0071] In this way, when the handle mechanism 400 is gripped and deflected, the direction of the gripping force is as follows: Figure 7 As indicated by F in the diagram, the deflection direction is as follows: Figure 7 As indicated by the hollow arrow, the locking assembly 300 can be driven to move towards the head end of the clamping assembly 200, causing the pressing recess 301 to abut against each clamping part 202, thereby driving each clamping part 202 to move closer to the cavity 201 and clamp the Kirschner wire 10. The specific shape and number of the clamping parts 202 and the pressing recess 301 can be determined according to actual needs, and this embodiment does not impose excessive restrictions.

[0072] Furthermore, in this embodiment, the clamping assembly 200 includes a rotary seat 210 and a spring sleeve 220. The rotary seat 210 is rotatably mounted on the chuck body 100, and the end of the spring sleeve 220 is coaxially inserted into the rotary seat 210.

[0073] The cavity 201 is located inside the spring sleeve 220, each clamping part 202 is located at the first end of the spring sleeve 220, and the locking assembly 300 is sleeved on the spring sleeve 220.

[0074] For example, such as Figure 2As shown, the rotary seat 210 is rotatably mounted in the chuck body 100 via bearings. The end of the rotary seat 210 can be connected to the output end of the bone marrow mobile phone via a reduction mechanism. The end of the spring sleeve 220 is coaxially inserted into the rotary seat 210 and can be connected by tight fit, threaded fit, etc. The cavity 201 is located in the axial direction within the spring sleeve 220, and each clamping part 202 is located at the head end of the spring sleeve 220. The locking assembly 300 is sleeved on the spring sleeve 220 and located between the clamping part 202 and the rotary seat 210. This facilitates the processing of each individual part and subsequent assembly. The specific shape and structure of the rotary seat 210 and the spring sleeve 220 can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0075] Furthermore, in this embodiment, the locking assembly 300 includes a locking sleeve 310 and an elastic element 320. The locking sleeve 310 is sleeved on the spring clip 220 and moves along the axis of the spring clip 220. The pressing recess 301 is located on the locking sleeve 310.

[0076] The elastic element 320 is sleeved on the locking sleeve 310 and elastically presses against the locking sleeve 310 on the side opposite to the head end of the spring clip 220. The handle mechanism 400 abuts against the side of the locking sleeve 310 opposite to the elastic element 320.

[0077] Specifically, such as Figure 2 , Figure 3 As shown, the locking sleeve 310 is fitted onto the spring clip 220 and can move along the axis of the spring clip 220. The clamping recess 301 is located at the beginning of the locking sleeve 310. The elastic element 320 is a compression spring, which is fitted onto the locking sleeve 310. One end of the spring clip 310 abuts against the flange or stop pin of the locking sleeve 310, and the other end abuts against the thrust bearing inside the chuck body 100 near the beginning of the spring clip 220. The thrust bearing should not interfere with the reset of the clamping part 202.

[0078] In this way, when the handle mechanism 400 is gripped, the locking sleeve 310 moves forward, while the elastic element 320 elastically presses against the locking sleeve 310 on the side opposite to the head end of the spring clip 220. Thus, when the handle mechanism 400 is released, the locking sleeve 310 quickly returns to its original position, releasing the clamping effect on the spring clip 220. The specific type and shape of the locking sleeve 310 and the elastic element 320 can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0079] Furthermore, in this embodiment, the handle mechanism 400 includes a pusher 410, a gripper 420, and a pivot assembly 430. The fork on the pusher 410 abuts against the ring of the locking sleeve 310. One end of the pusher 410 away from the fork and one end of the gripper 420 are rotatably connected to the chuck body 100 through the pivot assembly 430.

[0080] The gripper 420 rotates relative to the pusher 410 to adjust the deflection angle along the direction from the first end to the last end of the adjusting clamping assembly 200, and is locked by the pivot assembly 430.

[0081] Specifically, such as Figure 2 , Figure 4 As shown, the shift fork on the pusher 410 can abut against the ring of the locking sleeve 310 through the thrust bearing, thereby pushing the locking sleeve 310 towards the head end without restricting the rotation of the locking sleeve 310. The gripper 420 is used for hand gripping operation. One end of the pusher 410 away from the shift fork and one end of the gripper 420 are rotatably connected to the shaft hole on the chuck body 100 through the rotating shaft assembly 430.

[0082] The rotating shaft assembly 430 can lock or release the connection between the pusher 410 and the gripper 420 along the axial direction. When the rotating shaft assembly 430 releases the connection between the pusher 410 and the gripper 420, the gripper 420 can rotate relative to the pusher 410 to adjust the deflection angle along the direction from the first end to the last end of the adjusting clamping assembly 200. This accommodates grip adjustments for different hand sizes and allows adjustment of the stroke position of the gripper 420 when the diameter of the Kirschner wire 10 changes.

[0083] For example, such as Figure 4 As shown, the rotating shaft assembly 430 includes a first rotating shaft and a second rotating shaft. The pusher 410 has a first shaft hole at one end away from the shift fork, and the gripper 420 has a second shaft hole at one end near the shift fork. The second shaft hole is coaxial with the first rotating shaft. The first rotating shaft is inserted into the first shaft hole and is limited by a first step. The second rotating shaft is inserted into the second shaft hole and is limited by a second step. The first rotating shaft and the second rotating shaft are connected by a thread. The first rotating shaft and the second rotating shaft are rotatably connected to the shaft holes on the chuck body 100, respectively.

[0084] In addition, for example Figure 4 As shown, the contact surfaces of the pusher 410 and the gripper 420 can be provided with a rough structure, a serrated structure, etc., to ensure a more reliable connection between the pusher 410 and the gripper 420 after the first and second rotating shafts are tightened, preventing loosening. The specific shape and structure of the pusher 410, gripper 420, and rotating shaft assembly 430 can be determined according to actual needs, and this embodiment does not impose excessive restrictions.

[0085] In some embodiments, the system further includes a transmission seat 500 and at least one speed reduction assembly 600. The transmission seat 500 is rotatably disposed on the chuck body 100 away from the head end of the clamping assembly 200 and is coaxial with the clamping assembly 200.

[0086] One end of the transmission base 500 facing away from the clamping assembly 200 is used for transmission connection with the output end of the bone-powered mobile phone, and the other end of the transmission base 500 facing the clamping assembly 200 is transmission connected to the clamping assembly 200 through the reduction assembly 600.

[0087] Specifically, such as Figure 2 , Figure 5 , Figure 6 As shown, the transmission seat 500 can be rotatably mounted in the chuck body 100 away from the head end of the clamping assembly 200 via a bearing, and is arranged coaxially with the clamping assembly 200. The head end of the transmission seat 500 is connected to the clamping assembly 200 via a reduction assembly 600 (such as a planetary reduction assembly). The tail end of the transmission seat 500 can be connected to the output end of the bone marrow mobile phone. For example, the tail end of the transmission seat 500 can be configured as a fork-shaped structure to facilitate docking with the transmission pin on the output end of the motor inside the bone marrow mobile phone.

[0088] This makes it easier to convert the high-speed, low-torque output of the bone-powered mobile phone into low-speed, high-torque output and transmit it to the clamping component 200, making drilling easier.

[0089] Furthermore, in this embodiment, the reduction assembly 600 includes a sun gear 610, a plurality of planet gears 620, an internal gear ring 630, and a planet carrier 640. The sun gear 610 is coaxially connected to the transmission seat 500 and is arranged coaxially with the internal gear ring 630.

[0090] Each planetary gear 620 is arranged around the sun gear 610, with one side meshing with the sun gear 610 and the other side meshing with the internal gear ring 630.

[0091] The planetary carrier 640 is coaxially connected to the end of the clamping assembly 200 and rotatably connected to each planetary gear 620.

[0092] Specifically, such as Figure 2 , Figure 5 , Figure 6 As shown, the sun gear 610 is coaxially connected to the head end of the transmission base 500 and can be integrally formed. The sun gear 610 and the internal gear ring 630 are arranged coaxially. Four planet gears 620 are evenly arranged around the sun gear 610, and each planet gear 620 meshes with the sun gear 610 on one side and with the internal gear ring 630 on the other side.

[0093] In the case of a single reduction gear 600 (not shown in the figure), the planet carrier 640 is coaxially connected to the end of the clamping assembly 200 and rotatably connected to each planet gear 620. Thus, when the sun gear 610 rotates, the planet carrier 640 rotates via the planet gears 620, thereby driving the clamping assembly 200 to rotate – this is a first-stage reduction. In the case of two reduction gears 600, the planet carrier 640 of the first reduction gear 600 is coaxially connected to the shaft segment on one side of the sun gear 610 of the second reduction gear 600. The planet carrier 640 on the second reduction gear 600 is then coaxially connected to the end of the clamping assembly 200 and rotatably connected to each planet gear 620. Thus, when the sun gear 610 rotates, the planet carrier 640 rotates via the planet gears 620, thereby driving the clamping assembly 200 to rotate – this is a second-stage reduction. The number of reduction stages can be determined according to actual requirements.

[0094] Furthermore, in this embodiment, the planetary carrier 640 includes a rotating sleeve 641 and a plurality of pins 642, with the rotating sleeve 641 coaxially sleeved at the end of the clamping assembly 200.

[0095] Each pin 642 is connected at one end to the rotating sleeve 641, and at the other end is coaxially rotatably connected to the corresponding planetary gear 620.

[0096] For example, such as Figure 2 , Figure 5 , Figure 6 As shown, for a single reduction gear 600, the slewing sleeve 641 is coaxially sleeved at the end of the clamping assembly 200. It can be connected via a tight fit or a key structure, allowing the slewing sleeve 641 and the clamping assembly 200 to rotate synchronously. Four pins 642 are evenly distributed around the axis of the slewing sleeve 641, with one end of each pin 642 fixed to the slewing sleeve 641, and the other end of each pin 642 coaxially rotatably connected to the corresponding planetary gear 620.

[0097] In the case of two reduction gear components 600, the rotating sleeve 641 of the first reduction gear component 600 is coaxially sleeved on the shaft segment on one side of the sun gear 610 of the second reduction gear component 600, and the rotating sleeve 641 of the second reduction gear component 600 is coaxially sleeved on the end of the clamping component 200. This facilitates single-piece machining and subsequent assembly.

[0098] Furthermore, in this embodiment, the chuck body 100 includes a front cylinder 110 and a rear cylinder 120, the clamping assembly 200 is coaxially rotatably connected to the front cylinder 110, and the handle mechanism 400 is rotatably connected to the front cylinder 110 and extends into the front cylinder 110.

[0099] One end of the rear cylinder 120 is inserted into the front cylinder 110, and the other end is used to insert into the bone-powered mobile phone. The transmission seat 500 is rotatably connected inside the rear cylinder 120, and the internal gear ring 630 is coaxially inserted inside the rear cylinder 120.

[0100] Specifically, in combination Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, both the front cylinder 110 and the rear cylinder 120 are roughly rotary structures, both are hollow inside, and have through holes at the ends to facilitate the passage of Kirschner wires 10 or the transmission connection of the bone-powered handpiece. After the front cylinder 110 and the rear cylinder 120 are inserted together, they can be fastened by threads, bayonet fastening, etc.

[0101] The clamping assembly 200 is installed inside the front cylinder 110, and the handle mechanism 400 is rotatably mounted at the bottom of the front cylinder 110 and extends into the front cylinder 110. The transmission seat 500 is rotatably connected to the rear cylinder 120, and the internal gear ring 630 is coaxially inserted into the rear cylinder 120 and connected by a tight fit. Moreover, the end of the rear cylinder 120 opposite to the front cylinder 110 has a plug, and the bone conduction mobile phone has a matching socket. After the plug and socket are connected, power transmission is realized.

[0102] This facilitates single-piece processing and subsequent assembly, especially the coaxial fastening and installation of internal bearings, and makes positioning easier. The front cylinder 110 and the rear cylinder 120 are also easy to process by injection molding or milling, resulting in a more rational structure. The specific structure and dimensions of the front cylinder 110 and the rear cylinder 120 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0103] Secondly, embodiments of this application also provide a bone power drill, including a bone power handpiece and a Kirschner wire chuck as described in any of the above embodiments disposed on the bone power handpiece.

[0104] Specifically, the end of the aforementioned Kirschner wire chuck can be inserted into the output port of the bone-powered handpiece, either by tight fit or by snap-fit. In this case, the end of the clamping assembly 200 can be connected to the output shaft of the motor in the bone-powered handpiece via a reduction mechanism. Thus, the motor in the bone-powered handpiece can drive the clamping assembly 200 to rotate. Then, by operating the handle mechanism 400, the locking assembly 300 cooperates with the clamping assembly 200 to clamp the Kirschner wire 10, thereby driving the Kirschner wire 10 to rotate and perform drilling and other operations.

[0105] Therefore, the bone drill provided in this application embodiment, by configuring a Kirschner wire chuck, allows the Kirschner wire 10 to be placed in the cavity 201 of the clamping assembly 200, and the Kirschner wire 10 can be moved along the axial direction to adjust its length. By gripping or releasing the handle mechanism 400, the locking assembly 300 can cooperate with the clamping assembly 200 to clamp or release the Kirschner wire 10, thereby facilitating one-handed operation to clamp or release the Kirschner wire 10. The operation is simple and convenient, and the drilling efficiency can be greatly improved.

[0106] The above content is merely an example and illustration of the structure of this application. Any modifications or additions made by those skilled in the art to the specific embodiments described, or any substitutions made in a similar manner, shall fall within the protection scope of this application.

Claims

1. A Kirschner wire chuck, characterized in that, include: The clamp body (100) is used to connect to the bone-powered handpiece; The clamping assembly (200) is rotatably mounted on the clamp body (100) and has a cavity (201) in the direction of the rotation axis. The cavity (201) is used to place the Kirschner wire (10). The end of the clamping assembly (200) is used to drively connect with the output end of the bone-powered handpiece. A locking assembly (300) is sleeved on the clamping assembly (200) and moves along the rotation axis of the clamping assembly (200) to drive the clamping assembly (200) to clamp or release. A handle mechanism (400) is disposed on the chuck body (100) and deflects along the direction from the first end to the last end of the clamping assembly (200), and is connected to the locking assembly (300); Specifically, by gripping the handle mechanism (400) and deflecting the handle mechanism (400), the locking assembly (300) is moved toward the head end of the clamping assembly (200) so that the clamping assembly (200) clamps the Kirschner wire (10).

2. The Kirschner wire chuck according to claim 1, characterized in that, The clamping assembly (200) has a plurality of clamping parts (202) at its head end, and each clamping part (202) is arranged at intervals around the rotation axis of the clamping assembly (200). The locking assembly (300) has a pressing recess (301) on one side facing the head end of the clamping assembly (200). Drive the locking assembly (300) toward the head end of the clamping assembly (200) and make the pressing recess (301) abut against each of the clamping parts (202) to drive each of the clamping parts (202) toward the cavity (201).

3. The Kirschner wire chuck according to claim 2, characterized in that, The clamping assembly (200) includes a rotary seat (210) and a spring sleeve (220). The rotary seat (210) is rotatably mounted on the chuck body (100), and the end of the spring sleeve (220) is coaxially inserted into the rotary seat (210). The cavity (201) is located inside the spring sleeve (220), each of the clamping parts (202) is located at the head end of the spring sleeve (220), and the locking assembly (300) is sleeved on the spring sleeve (220).

4. The Kirschner wire chuck according to claim 3, characterized in that, The locking assembly (300) includes a locking sleeve (310) and an elastic element (320). The locking sleeve (310) is sleeved on the spring clip (220) and moves along the axis of the spring clip (220). The pressing recess (301) is located on the locking sleeve (310). The elastic element (320) is sleeved on the locking sleeve (310) and elastically presses against the locking sleeve (310) on the side opposite to the head end of the spring clip (220). The handle mechanism (400) abuts against the side of the locking sleeve (310) opposite to the elastic element (320).

5. The Kirschner wire chuck according to claim 4, characterized in that, The handle mechanism (400) includes a pusher (410), a gripper (420), and a pivot assembly (430). The fork on the pusher (410) abuts against the ring of the locking sleeve (310). One end of the pusher (410) away from the fork and one end of the gripper (420) are rotatably connected to the chuck body (100) via the pivot assembly (430). The gripper (420) rotates relative to the pusher (410) to adjust the deflection angle in the direction of adjusting the first end to the last end of the clamping assembly (200) and is locked by the pivot assembly (430).

6. The Kirschner wire chuck according to any one of claims 1 to 5, characterized in that, It also includes a transmission seat (500) and at least one reduction assembly (600), the transmission seat (500) being rotatably disposed on the chuck body (100) away from the head end of the clamping assembly (200) and coaxial with the clamping assembly (200); The end of the transmission seat (500) facing away from the clamping assembly (200) is used for transmission connection with the output end of the bone-powered mobile phone, and the end of the transmission seat (500) facing the clamping assembly (200) is transmission connected to the clamping assembly (200) through the deceleration assembly (600).

7. The Kirschner wire chuck according to claim 6, characterized in that, The reduction assembly (600) includes a sun gear (610), a plurality of planet gears (620), an internal gear ring (630) and a planet carrier (640). The sun gear (610) is coaxially connected to the transmission seat (500) and is arranged coaxially with the internal gear ring (630). Each of the planetary gears (620) is arranged around the sun gear (610), with one side meshing with the sun gear (610) and the other side meshing with the internal gear ring (630); The planetary carrier (640) is coaxially connected to the end of the clamping assembly (200) and rotatably connected to each of the planetary gears (620).

8. The Kirschner wire chuck according to claim 7, characterized in that, The planetary carrier (640) includes a rotating sleeve (641) and a plurality of pins (642), the rotating sleeve (641) being coaxially sleeved at the end of the clamping assembly (200); One end of each of the pins (642) is connected to the rotating sleeve (641), and the other end is coaxially rotatably connected to the corresponding planetary gear (620).

9. The Kirschner wire chuck according to claim 7, characterized in that, The chuck body (100) includes a front cylinder (110) and a rear cylinder (120). The clamping assembly (200) is coaxially rotatably connected inside the front cylinder (110). The handle mechanism (400) is rotatably connected to the front cylinder (110) and extends into the front cylinder (110). One end of the rear cylinder (120) is inserted into the front cylinder (110), and the other end is used to be inserted into the bone-powered mobile phone. The transmission seat (500) is rotatably connected inside the rear cylinder (120), and the internal gear ring (630) is coaxially inserted inside the rear cylinder (120).

10. A bone dynamic drill, characterized in that, Includes a bone-powered handpiece and a Kirschner wire chuck as described in any one of claims 1 to 9 disposed on the bone-powered handpiece.

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