Ultrasonic cutting hemostatic knife

Abstract

The utility model discloses an ultrasonic cutting hemostatic knife relates to medical instrument technical field, wherein, ultrasonic cutting hemostatic knife includes: transducer, transducer has fixed state and rotatable state, knife bar, knife bar has the head, and the one end of knife bar is away from the head and is screwed with transducer, torsion impeller, be located in knife bar, and knife bar is with torsion impeller circumferential synchronous rotation, and torsion impeller is configured as when rotating to first rotating direction, the torque that applies to knife bar is less than or equal to preset torque, wherein, in the fixed state of transducer, through torsion impeller drive knife bar assembly in transducer, in rotatable state of transducer, through torsion impeller drive knife bar and transducer synchronous rotation, to adjust the orientation of head. The technical scheme provided by the utility model reduces the operation step when user assembly knife bar and transducer.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic cutting hemostatic knife. Background Technology

[0002] Ultrasonic cutting hemostatic scalpels convert electrical energy into high-frequency mechanical vibrations through a transducer, which are then transmitted to the cutting head via the shank to achieve cutting and hemostasis. To ensure the efficiency and safety of the ultrasonic cutting hemostatic scalpel, the shank and transducer are typically connected by threads, and a specific torque needs to be applied during assembly. If the applied torque is insufficient, the threaded connection may loosen, affecting vibration transmission and leading to decreased surgical performance; if the applied torque is excessive, it may damage the threads or other parts, resulting in equipment failure.

[0003] Therefore, a torque wrench is required when assembling the cutter bar and transducer. Currently, all ultrasonic cutting hemostatic knives on the market are equipped with a disposable torque wrench. Every time the cutter bar needs to be connected to the transducer, the disposable torque wrench must be used to tighten the cutter bar and then the torque wrench must be removed. This involves many steps for the user and is cumbersome. Utility Model Content

[0004] The main purpose of this invention is to provide an ultrasonic cutting hemostatic knife, which aims to reduce the number of steps required for users to assemble the knife holder and transducer.

[0005] To achieve the above objectives, the ultrasonic cutting hemostatic knife proposed in this utility model includes:

[0006] A transducer having a fixed state and a rotatable state;

[0007] A cutter bar, the cutter bar having a cutter head, the end of the cutter bar opposite to the cutter head being threadedly connected to the transducer;

[0008] A torque impeller is disposed on the tool holder, and the tool holder can rotate synchronously with the torque impeller in the circumferential direction. The torque impeller is configured such that when it rotates in the first rotation direction, the torque applied to the tool holder is less than or equal to a preset torque.

[0009] In the fixed state of the transducer, the tool holder is mounted on the transducer by the torque impeller; in the rotatable state of the transducer, the tool holder and the transducer are rotated synchronously by the torque impeller to adjust the orientation of the tool head.

[0010] In one embodiment, the torsion impeller includes:

[0011] A transmission component is sleeved outside the tool holder and rotates synchronously with the tool holder; the transmission component is provided with a first force transmission structure.

[0012] The meshing element is slidably disposed on one side of the first force transmission structure, and is provided with a second force transmission structure that cooperates with the first force transmission structure.

[0013] A pulsator housing is fitted over the outside of the engaging member and drives the engaging member to rotate synchronously with the pulsator housing; and

[0014] An elastic element elastically connects the impeller housing and the engaging element to drive the second force transmission structure to abut against the first force transmission structure;

[0015] When the torque applied by the transmission member to the tool bar is less than or equal to the preset torque, the second force transmission structure rotates synchronously with the first force transmission structure, so that the impeller housing drives the transmission member to rotate synchronously along the first rotation direction through the meshing member; when the torque applied by the transmission member to the tool bar is greater than or equal to the preset torque, the second force transmission structure rotates relative to the first force transmission structure.

[0016] In one embodiment, the first force transmission structure is a first sawtooth, and the second force transmission structure is a second sawtooth that cooperates with the first sawtooth.

[0017] Wherein, the first serrated ring is disposed on the transmission member, and / or the second serrated ring is disposed on the meshing member.

[0018] In one embodiment, the first saw tooth includes a plurality of inclined first helical teeth, and the second saw tooth includes a plurality of inclined second helical teeth. The inclination direction of the first helical teeth is the same as the first rotation direction, and the inclination direction of the second helical teeth is opposite to the first rotation direction.

[0019] In one embodiment, the sliding direction of the meshing member is the same as the axial direction of the tool holder.

[0020] In one embodiment, the impeller housing is provided with an assembly channel, the transmission member is at least partially inserted inside the assembly channel, and the engagement member is disposed inside the assembly channel and sleeved on the outside of the transmission member.

[0021] In one embodiment, a connecting structure is provided between the impeller housing and the meshing member, and the impeller housing drives the meshing member to rotate synchronously through the connecting structure.

[0022] In one embodiment, the connecting structure includes a groove and a transmission protrusion. The groove is disposed on the inner wall of the assembly channel and extends along the axial direction of the tool holder. The transmission protrusion is disposed on the outer wall of the meshing member. The transmission protrusion is inserted into the groove and can slide within the groove, so that the impeller housing drives the meshing member to rotate and the meshing member can slide relative to the impeller housing.

[0023] In one embodiment, the outer wall of the impeller housing is provided with protruding ribs, and the protruding ribs are provided in two and are equally spaced along the outer periphery of the impeller housing, and / or,

[0024] The outer wall of the impeller housing is provided with multiple anti-slip protrusions and / or multiple anti-slip grooves.

[0025] In one embodiment, a connecting component is further included to fix the torque impeller and the cutter bar together.

[0026] The ultrasonic cutting hemostatic knife of this utility model includes a transducer, a knife shank, and a torque wheel. The torque wheel is mounted on the knife shank. When assembling the knife shank and the transducer, the transducer is fixed in place. At this time, the torque wheel functions as a torque wrench. Rotating the torque wheel drives the knife shank and the transducer to be threaded together. The torque wheel can provide a torque less than a preset torque to the knife shank, thereby avoiding excessive torque that could damage the threads between the knife shank and the transducer. After the knife shank and the transducer are assembled, during the actual application of the ultrasonic cutting hemostatic knife, the transducer can rotate. At this time, rotating the torque wheel can drive the knife shank, the transducer, and the knife head to rotate synchronously, thereby realizing the function of adjusting the orientation of the knife head. In the process of assembling the cutter bar and transducer, the torque wheel on the cutter bar integrates the function of a torque wrench. Users can directly operate the torque wheel on the cutter bar to assemble the cutter bar and transducer without the need to take out, put in, or remove the torque wrench. This reduces the number of user operation steps and the number of parts in the ultrasonic cutting hemostatic knife, thereby improving the convenience of user assembly. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the ultrasonic cutting hemostatic knife provided by this utility model;

[0029] Figure 2 A cross-sectional view of a partial structure of an embodiment of the ultrasonic cutting hemostatic knife provided by this utility model. Figure 1 ;

[0030] Figure 3 A cross-sectional view of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model;

[0031] Figure 4A partial structural diagram of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model;

[0032] Figure 5 A schematic diagram of the transmission component of the torsion wheel of the ultrasonic cutting hemostatic knife provided by this utility model;

[0033] Figure 6 A schematic diagram of the meshing component of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model;

[0034] Figure 7 This is a schematic diagram of the impeller housing of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model.

[0035] Explanation of icon numbers:

[0036] 100. Power handle;

[0037] 200. Tool holder;

[0038] 300. Blade tip;

[0039] 400. Torque impeller; 410. Transmission component; 411. First force transmission structure; 4111. First sawtooth; 412. Elastic arm; 4121. First limiting protrusion; 420. Engaging component; 421. Second force transmission structure; 4211. Second sawtooth; 430. Impeller housing; 431. Raised rib; 432. Anti-slip protrusion; 433. Anti-slip groove; 434. Second limiting protrusion; 440. Elastic component; 450. Connecting structure; 451. Slide groove; 452. Transmission protrusion; 460. Connecting assembly.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] This invention proposes an ultrasonic cutting hemostatic knife.

[0046] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of an embodiment of the ultrasonic cutting hemostatic knife provided by this utility model. Figure 2 A cross-sectional view of a partial structure of an embodiment of the ultrasonic cutting hemostatic knife provided by this utility model. Figure 1 , Figure 3 This is a cross-sectional view of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model. Figure 4 A partial structural diagram of the torsion impeller of the ultrasonic cutting hemostatic knife provided by this utility model.

[0047] In one embodiment of this utility model, the ultrasonic cutting hemostatic knife includes:

[0048] A transducer (not shown in the figure) has a fixed state and a rotatable state;

[0049] The tool holder 200 has a tool head 300, and the end of the tool holder 200 away from the tool head 300 is threadedly connected to the transducer;

[0050] Torque wheel 400 is provided on tool holder 200, and tool holder 200 rotates synchronously with torque wheel 400 in the circumferential direction. Torque wheel 400 is configured such that when it rotates in the first rotation direction, the torque applied to tool holder 200 is less than or equal to a preset torque.

[0051] In the fixed state of the transducer, the tool holder 200 is driven to be mounted on the transducer by the torque impeller 400; in the rotatable state of the transducer, the tool holder 200 and the transducer are driven to rotate synchronously by the torque impeller 400 to adjust the orientation of the tool head 300.

[0052] The ultrasonic cutting hemostatic knife of this utility model includes a transducer, a blade 200, and a torque wheel 400. The torque wheel 400 is mounted on the blade 200. When assembling the blade 200 with the transducer, the transducer is fixed. At this time, the torque wheel 400 functions as a torque wrench. Rotating the torque wheel 400 drives the blade 200 and the transducer to be threaded together. The torque wheel 400 can provide a torque less than a preset torque to the blade 200, thereby avoiding excessive torque that could damage the threads between the blade 200 and the transducer. After the blade 200 and the transducer are assembled, during the actual application of the ultrasonic cutting hemostatic knife, the transducer can rotate. At this time, rotating the torque wheel 400 can drive the blade 200, the transducer, and the blade head 300 to rotate synchronously, thereby realizing the function of adjusting the orientation of the blade head 300. In the process of assembling the cutter bar 200 and the transducer, the torque wheel 400 on the cutter bar 200 integrates the function of a torque wrench. Users can directly operate the torque wheel 400 on the cutter bar 200 to assemble the cutter bar 200 and the transducer without the need to take out, put in, or remove the torque wrench. This reduces the number of user operation steps and the number of parts in the ultrasonic cutting hemostatic knife, thereby improving the convenience of user assembly.

[0053] The first rotation direction refers to the direction in which the tool holder 200 and the transducer threads are tightened. The preset torque is specifically designed based on the thread specifications between the tool holder 200 and the transducer, as long as it meets the functional requirements; it is not limited here.

[0054] In one embodiment, the torque impeller 400 includes:

[0055] The transmission component 410 is sleeved on the outside of the tool holder 200 and rotates synchronously with the tool holder 200. The transmission component 410 is provided with a first force transmission structure 411.

[0056] The meshing member 420 is slidably disposed on one side of the first force transmission structure 411, and is provided with a second force transmission structure 421 that cooperates with the first force transmission structure 411.

[0057] The impeller housing 430 is sleeved on the outside of the engaging member 420 and drives the engaging member 420 to rotate synchronously with the impeller housing 430; and

[0058] The elastic element 440 elastically connects the impeller housing 430 and the engaging element 420 to drive the second force transmission structure 421 to abut against the first force transmission structure 411.

[0059] When the torque applied by the transmission component 410 to the tool holder 200 is less than or equal to the preset torque, the second force transmission structure 421 rotates synchronously with the first force transmission structure 411, so that the impeller housing 430 drives the transmission component 410 to rotate synchronously in the first rotation direction through the meshing component 420; when the torque applied by the transmission component 410 to the tool holder 200 is greater than or equal to the preset torque, the second force transmission structure 421 rotates relative to the first force transmission structure 411.

[0060] Reference Figures 3 to 4In an embodiment of this utility model, the torque impeller 400 includes a transmission component 410, a meshing component 420, an impeller housing 430, and an elastic component 440. The transmission component 410 is connected to the tool holder 200 by means of snap-fit ​​or screw fastening, so that the transmission component 410 and the tool holder 200 rotate synchronously. A first force transmission structure 411 is provided on the transmission component 410, and a second force transmission structure 421 that cooperates with the first force transmission structure 411 is provided on the meshing component 420. The impeller housing 430 is connected to the meshing component 420 by means of snap-fit ​​or screw fastening, so that the impeller housing 430 and the meshing component 420 rotate synchronously. When the user operates the impeller housing 430 to rotate, the impeller housing 430 drives the meshing component 420 to rotate. The force is transmitted between the meshing component 420 and the transmission component 410 through the first force transmission structure 411 and the second force transmission structure 421. The elastic element 440 is disposed between the impeller housing 430 and the engaging element 420 and has a certain deformation, so that the second force transmission structure 421 and the first force transmission structure 411 are tightly attached. The elastic force of the elastic element 440 is set to correspond to the preset torque. When the tool holder 200 and the transducer are initially threadedly connected, the force that the user needs to apply to the impeller housing 430 is small, and the elastic element 440 maintains its own state. The engaging element 420 drives the transmission element 410 and the tool holder 200 to rotate synchronously. During this process, the torque applied by the transmission element 410 to the tool holder 200 is not greater than the preset torque. As the threaded assembly between the tool holder 200 and the transducer becomes tighter, the force that the user needs to apply to the impeller housing 430 increases. The force also increases; until the threaded connection between the tool holder 200 and the transducer meets the assembly requirements, the user needs to apply a large force to the impeller housing 430. The reaction force of the first force transmission structure 411 on the second force transmission structure 421 overcomes the elastic force of the elastic element 440, causing the elastic element 440 to deform, causing the second force transmission structure 421 to slide relative to the first force transmission structure 411, which in turn causes the meshing element 420 to rotate relative to the transmission element 410. Even if the user rotates the impeller housing 430, the meshing element 420 will not drive the transmission element 410, thereby ensuring that the torque applied by the transmission element 410 to the tool holder 200 will not exceed the preset torque, thus realizing the torque wrench function.

[0061] The first force transmission structure 411 and the second force transmission structure 421 can adopt various structural forms such as wave-shaped structure or sawtooth structure corresponding to each other.

[0062] When the meshing member 420 rotates relative to the transmission member 410, that is, when the second force transmission structure 421 slides relative to the first force transmission structure 411, the meshing member 420 needs to cooperate to slide so that the elastic member 440 can deform. The sliding direction of the meshing member 420 can be the same as the axial direction of the tool holder 200 or the same as the radial direction of the tool holder 200.

[0063] In one embodiment, the first force transmission structure 411 is a first sawtooth 4111, and the second force transmission structure 421 is a second sawtooth 4211 that cooperates with the first sawtooth 4111.

[0064] The first sawtooth 4111 is ring-shaped on the transmission member 410, and / or the second sawtooth 4211 is ring-shaped on the meshing member 420.

[0065] Reference Figures 4 to 6 In this embodiment of the invention, the first force transmission structure 411 is a first sawtooth 4111, and the second force transmission structure 421 is a second sawtooth 4211 that cooperates with the first sawtooth 4111. The first sawtooth 4111 and the second sawtooth 4211 mesh, enabling the meshing member 420 to drive the transmission member 410 to rotate synchronously or the meshing member 420 to rotate independently relative to the transmission member 410. The structure is simple and easy to manufacture. Specifically, the first sawtooth 4111 can be arranged in a ring on the transmission member 410, and a portion of the second sawtooth 4211 arranged in a ring can be arranged on the meshing member 420; alternatively, a portion of the first sawtooth 4111 arranged in a ring can be arranged on the transmission member 410, and the second sawtooth 4211 arranged in a ring can be arranged on the meshing member 420, to ensure the continuity of the meshing of the first sawtooth 4111 and the second sawtooth 4211, thereby ensuring the continuity of transmission between the meshing member 420 and the transmission member 410. Specifically, in this embodiment, the first saw teeth 4111 are arranged in a ring on the transmission member 410, and the second saw teeth 4211 are arranged in a ring on the meshing member 420.

[0066] In one embodiment, the first saw tooth 4111 includes a plurality of inclined first helical teeth, and the second saw tooth 4211 includes a plurality of inclined second helical teeth. The inclination direction of the first helical teeth is the same as the first rotation direction, and the inclination direction of the second helical teeth is opposite to the first rotation direction.

[0067] Reference Figures 4 to 6 In this embodiment of the invention, the engagement of the first and second helical teeth makes it easier for the second helical tooth to slide relative to the first helical tooth when rotating in the first rotation direction. This makes it easier for the meshing member 420 to rotate independently relative to the transmission member 410 when rotating in the first rotation direction, thus ensuring that the torque impeller 400 functions as a torque wrench and preventing jamming between the meshing member 420 and the transmission member 410, which could damage the threads between the tool holder 200 and the transducer. On the other hand, when the impeller housing 430 rotates in the opposite direction of the first rotation direction, the engagement of the first and second helical teeth makes it less likely for the second helical tooth to slide relative to the first helical tooth. This ensures that when the meshing member 420 rotates in the opposite direction of the first rotation direction, it will drive the transmission member 410 to rotate synchronously. When the transducer is fixed, it is easier to disassemble the tool holder 200 and the transducer. When the transducer is rotatable, it is easier to adjust the orientation of the tool head 300.

[0068] In one embodiment, the sliding direction of the meshing member 420 is the same as the axial direction of the tool holder 200.

[0069] Reference Figures 2 to 3 In this embodiment of the present invention, the sliding direction of the meshing member 420 is the same as the axial direction of the tool holder 200. The first force transmission structure 411 protrudes from the outer peripheral wall of the transmission member 410. The meshing member 420 is sleeved on the outside of the transmission member 410. The second force transmission structure 421 is disposed on the side of the meshing member 420 facing the first force transmission structure 411. The elastic member 440 is disposed on the side of the meshing member 420 away from the first force transmission structure 411, making the structure of the entire torque impeller 400 more compact and reducing the obstruction of the user's field of vision by the torque impeller 400.

[0070] In one embodiment, the impeller housing 430 is provided with an assembly channel, the transmission member 410 is at least partially inserted inside the assembly channel, and the meshing member 420 is disposed inside the assembly channel and sleeved on the outside of the transmission member 410.

[0071] In this embodiment of the present invention, the impeller housing 430 is provided with an assembly channel. One end of the transmission member 410 passes through the interior of the assembly channel, and the other end of the transmission member 410 extends to the exterior of the assembly channel. The meshing member 420 and the elastic member 440 are both disposed inside the assembly channel. On the one hand, the impeller housing 430 protects the components inside the assembly channel, reducing the possibility of foreign objects such as dust from the external environment entering, especially preventing foreign objects from entering between the first saw tooth 4111 and the second saw tooth 4211, thus ensuring the service life of the torque impeller 400. On the other hand, it reduces the possibility of the meshing first saw tooth 4111 and the second saw tooth 4211 damaging the user, thus improving the safety of the ultrasonic cutting hemostatic knife assembly process.

[0072] In one embodiment, a connecting structure 450 is provided between the impeller housing 430 and the meshing member 420, and the impeller housing 430 drives the meshing member 420 to rotate synchronously through the connecting structure 450.

[0073] Reference Figure 3 In an embodiment of this utility model, a connecting structure 450 is provided between the impeller housing 430 and the meshing member 420. The connecting structure 450 can be implemented by means of snap-fit ​​or screw fastening, so that the impeller housing 430 and the meshing member 420 can rotate synchronously.

[0074] In one embodiment, the connecting structure 450 includes a groove 451 and a transmission protrusion 452. The groove 451 is disposed on the inner wall of the assembly channel and extends along the axial direction of the tool holder 200. The transmission protrusion 452 is disposed on the outer wall of the meshing member 420. The transmission protrusion 452 is inserted into the groove 451 and can slide within the groove 451, so that the impeller housing 430 drives the meshing member 420 to rotate and the meshing member 420 can slide relative to the impeller housing 430.

[0075] Combination Figure 3 , Figure 6 as well as Figure 7 In this embodiment of the invention, the connecting structure 450 includes a matching groove 451 and a transmission protrusion 452. The outer wall of the meshing member 420 is provided with the transmission protrusion 452, and the inner wall of the assembly channel is provided with a groove 451 extending axially along the tool holder 200. After the transmission protrusion 452 is inserted into the groove 451, the rotation of the impeller housing 430 will drive the meshing member 420 to rotate synchronously. Furthermore, the groove 451 can slide and guide the transmission protrusion 452, allowing the meshing member 420 to move axially within the impeller housing 430, thereby enabling the meshing member 420 to rotate independently relative to the transmission member 410. The arrangement of the groove 451 and the transmission protrusion 452 achieves both synchronous rotation of the impeller housing 430 and the meshing member 420, and axial movement of the meshing member 420 relative to the impeller housing 430, resulting in a simple structure. Specifically, multiple slide grooves 451 are evenly spaced along the circumferential spacing of the inner wall of the assembly channel, and multiple transmission protrusions 452 are evenly spaced along the circumferential spacing of the meshing member 420. The number of transmission protrusions 452 and slide grooves 451 are equal.

[0076] In one embodiment, the outer wall of the impeller housing 430 is provided with two protruding ribs 431, which are equally spaced along the outer periphery of the impeller housing 430, and / or,

[0077] The outer wall of the impeller housing 430 is provided with multiple anti-slip protrusions 432 and / or multiple anti-slip grooves 433.

[0078] Reference Figure 7 In this embodiment of the utility model, the outer wall of the impeller housing 430 is provided with a protruding rib 431. Two ribs 431 can be provided, or three or more ribs can be provided. The protruding ribs 431 make it easier for the user to rotate the impeller housing 430, thereby improving the user's convenience in operating the torque impeller 400 to assemble the tool bar 200 onto the transducer.

[0079] Reference Figure 7 In the embodiments of this utility model, the outer wall of the impeller housing 430 may be provided with multiple anti-slip protrusions 432 or multiple anti-slip grooves 433 to enhance the grip of the user's hand when it comes into contact with the impeller housing 430 and improve the convenience of the user to twist the impeller housing 430.

[0080] Specifically, in this embodiment, the outer periphery of the impeller housing 430 away from the cutter head 300 is provided with a plurality of anti-slip protrusions 432, and an anti-slip groove 433 is provided between two adjacent anti-slip protrusions 432. The outer periphery of the impeller housing 430 near the cutter head 300 is provided with two opposing ribs 431, each rib 431 being connected to an anti-slip protrusion 432. This improves the ease of torsion of the impeller housing 430 while reducing the processing difficulty of the impeller housing 430.

[0081] In one embodiment, a connecting component 460 is also included, through which the torque impeller 400 and the cutter bar 200 are fixedly connected.

[0082] Reference Figure 2 In this embodiment of the invention, the ultrasonic cutting hemostatic knife further includes a connecting component 460. The transmission component 410 is connected to the blade shank 200 via the connecting component 460, enabling synchronous rotation of the transmission component 410 and the blade shank 200. The connecting component 460 can be a pin, screw, etc. Specifically, in this embodiment, the connecting component 460 includes a pin that passes through the blade shank 200 and the transmission component 410 radially. This not only achieves the connection between the blade shank 200 and the transmission component 410 but also ensures the uniformity of the torque applied when the transmission component 410 drives the blade shank 200 to rotate, reducing the possibility of connection failure between the blade shank 200 and the transmission component 410.

[0083] Reference Figures 3 to 4 In this embodiment of the present invention, the transmission component 410 has an elastic arm 412 at one end located within the assembly channel. The end of the elastic arm 412 has a first limiting protrusion 4121, and the inner wall of the assembly channel has a second limiting protrusion 434. During assembly, the meshing component 420 is first fitted onto the outside of the transmission component 410, positioning it between the first limiting protrusion 4121 and the first force transmission structure 411. Then, the elastic component 440 is fitted onto the side of the meshing component 420 facing away from the first transmission structure. Finally, the transmission component 410, meshing component 420, and elastic component 440 are inserted into the assembly channel, allowing the first limiting protrusion 4121 to engage with the second limiting protrusion 434, thereby achieving axial positioning of the impeller housing 430 and the transmission component 410. Finally, the end of the transmission component 410 located outside the assembly channel is connected to the tool holder 200 via a pin, thus achieving the assembly of the torque impeller 400 and the tool holder 200. This assembly process is part of the production process. During use, the user only needs to operate the torque wheel 400 to detach and assemble the tool holder 200 from the transducer in the power handle 100.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An ultrasonic cutting hemostatic knife, characterized in that, include: A transducer having a fixed state and a rotatable state; A cutter bar, the cutter bar having a cutter head, the end of the cutter bar opposite to the cutter head being threadedly connected to the transducer; A torque impeller is disposed on the tool holder, and the tool holder rotates synchronously with the torque impeller in the circumferential direction. The torque impeller is configured such that when it rotates in the first rotation direction, the torque applied to the tool holder is less than or equal to a preset torque. In the fixed state of the transducer, the rotation of the torsion wheel drives the cutter bar to be assembled on the transducer; in the rotatable state of the transducer, the rotation of the torsion wheel drives the cutter bar and the transducer to rotate synchronously to adjust the orientation of the cutter head.

2. The ultrasonic cutting hemostatic knife as described in claim 1, characterized in that, The torque impeller includes: A transmission component is sleeved outside the tool holder and rotates synchronously with the tool holder; the transmission component is provided with a first force transmission structure. The meshing element is slidably disposed on one side of the first force transmission structure, and is provided with a second force transmission structure that cooperates with the first force transmission structure. A pulsator housing is fitted over the outside of the engaging member and drives the engaging member to rotate synchronously with the pulsator housing; and An elastic element elastically connects the impeller housing and the engaging element to drive the second force transmission structure to abut against the first force transmission structure; When the torque applied by the transmission component to the tool bar is less than or equal to the preset torque, the second force transmission structure rotates synchronously with the first force transmission structure, so that the impeller housing drives the transmission component to rotate synchronously along the first rotation direction through the meshing component; when the torque applied by the transmission component to the tool bar is greater than or equal to the preset torque, the second force transmission structure rotates relative to the first force transmission structure.

3. The ultrasonic cutting hemostatic knife as described in claim 2, characterized in that, The first force transmission structure is a first sawtooth, and the second force transmission structure is a second sawtooth that cooperates with the first sawtooth; Wherein, the first serrated ring is disposed on the transmission member, and / or the second serrated ring is disposed on the meshing member.

4. The ultrasonic cutting hemostatic knife as described in claim 3, characterized in that, The first saw tooth includes a plurality of inclined first helical teeth, and the second saw tooth includes a plurality of inclined second helical teeth. The inclination direction of the first helical teeth is the same as the first rotation direction, and the inclination direction of the second helical teeth is opposite to the first rotation direction.

5. The ultrasonic cutting hemostatic knife as described in claim 2, characterized in that, The sliding direction of the meshing member is the same as the axial direction of the tool holder.

6. The ultrasonic cutting hemostatic knife as described in claim 5, characterized in that, The impeller housing is provided with an assembly channel, the transmission component is at least partially inserted inside the assembly channel, and the meshing component is located inside the assembly channel and sleeved on the outside of the transmission component.

7. The ultrasonic cutting hemostatic knife as described in claim 6, characterized in that, A connecting structure is provided between the impeller housing and the meshing member, and the impeller housing drives the meshing member to rotate synchronously through the connecting structure.

8. The ultrasonic cutting hemostatic knife as described in claim 7, characterized in that, The connecting structure includes a groove and a transmission protrusion. The groove is located on the inner wall of the assembly channel and extends along the axial direction of the tool holder. The transmission protrusion is located on the outer wall of the meshing member. The transmission protrusion is inserted into the groove and can slide within the groove, so that the impeller housing drives the meshing member to rotate and the meshing member can slide relative to the impeller housing.

9. The ultrasonic cutting hemostatic knife as described in claim 2, characterized in that, The outer wall of the impeller housing is provided with protruding ribs, and there are two ribs that are equally spaced along the outer periphery of the impeller housing, and / or, The outer wall of the impeller housing is provided with multiple anti-slip protrusions and / or multiple anti-slip grooves.

10. The ultrasonic cutting hemostatic knife as described in claim 1, characterized in that, It also includes a connecting component, through which the torque impeller and the cutter bar are fixedly connected.

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