Blade assembly and multi-degree-of-freedom ultrasonic scalpel

Abstract

This invention discloses a blade assembly and a multi-degree-of-freedom ultrasonic scalpel. The blade assembly includes a housing assembly, a transducer, and a blade body. The housing assembly has a mounting cavity; the transducer is located within the mounting cavity and is adapted to be connected to the control board of the ultrasonic scalpel via a cable. The transducer is integrated into the housing assembly to reduce the overall size of the ultrasonic scalpel; one end of the blade body is inserted into the mounting cavity and connected to the transducer. This invention improves the structure of the ultrasonic scalpel blade assembly. By integrating the transducer into the blade assembly, a rigid structure is avoided in the connection between the blade assembly and the base. This improves the operational flexibility and operating space of the ultrasonic scalpel, enabling the ultrasonic blade to have multiple degrees of freedom and ensuring efficient energy transfer between the transducer and the blade.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic scalpel technology, and more particularly to a scalpel head assembly and a multi-degree-of-freedom ultrasonic scalpel. Background Technology

[0002] An ultrasonic scalpel, also known as an ultrasonic cutting and hemostatic scalpel, works by converting electrical energy into high-frequency mechanical energy through piezoelectric ceramics in a transducer. The high-frequency mechanical vibration of the scalpel shaft acts on the tissue, causing protein coagulation and achieving the effects of tissue dissection and blood vessel closure. Compared to traditional electrocautery, ultrasonic scalpels cause less damage to tissues and are therefore increasingly used in clinical practice.

[0003] In existing ultrasonic scalpels, the transducers are all installed on the side close to the operator or the robotic arm, away from the tissue and the scalpel head assembly. In order to ensure the high efficiency of energy transfer and effectively transfer the energy of high-frequency mechanical vibration to the scalpel head assembly, the connection structure between the transducer and the scalpel head assembly can only be a rigid connection. However, this rigid structure greatly limits the operational flexibility of ultrasonic scalpel instruments. Summary of the Invention

[0004] The main objective of this invention is to provide a blade assembly and a multi-degree-of-freedom ultrasonic scalpel, which aims to improve the operational flexibility of ultrasonic scalpel instruments and ensure the high efficiency of energy transfer between the transducer and the blade.

[0005] To achieve the above objectives, the present invention provides a cutter head assembly, the cutter head assembly comprising:

[0006] The housing assembly has a mounting cavity;

[0007] A transducer, disposed within the mounting cavity and adapted to be connected to the control board of the ultrasonic scalpel via a cable, the transducer being integrated within the housing assembly to reduce the overall volume of the ultrasonic scalpel; and a scalpel body, one end of which is inserted into the mounting cavity and connected to the transducer.

[0008] Optionally, the blade body includes a blade head and a blade shank, one end of the blade head is rotatably disposed on the end of the housing assembly, and the blade shank is inserted into the mounting cavity and connected to the transducer.

[0009] Optionally, the transducer is provided with a protrusion, and the blade holder is provided with a groove corresponding to the position of the protrusion, and the protrusion is embedded in the groove.

[0010] Optionally, the housing assembly includes an outer rod and an inner rod, the inner rod abutting against the cutter head and movably disposed within the outer rod along the axial direction of the outer rod, so as to adjust the opening or closing of the cutter head relative to the cutter bar.

[0011] Optionally, the inner rod is provided with a limiting hole at the end away from the cutter head, and a positioning pin is inserted into the limiting hole to limit the range of movement of the inner rod along the axial direction of the outer rod.

[0012] To achieve the above objectives, the present invention also proposes a multi-degree-of-freedom ultrasonic scalpel, the ultrasonic scalpel comprising:

[0013] Base;

[0014] A reel assembly is disposed within the base, and a tension rope, a push rope, and a pull rope are respectively wound on the reel assembly;

[0015] An instrument rod, one end of which is fixed to the base, and the tension rope, the push rope, and the pull rope are respectively threaded through the instrument rod;

[0016] A movable component, located at the other end of the instrument rod, is connected to the tension rope, the push rope, and the pulling rope, respectively, to move axially along the instrument rod under the action of the tension rope and the push rope, and to swing arbitrarily under the action of the pulling rope; and

[0017] As described above, in the cutter head assembly, the inner rod of the cutter head assembly is connected to the movable component to open or close under the action of the movable component; the cutter head assembly includes:

[0018] The housing assembly has a mounting cavity;

[0019] A transducer, disposed within the mounting cavity and adapted to be connected to the control board of the ultrasonic scalpel via a cable, the transducer being integrated within the housing assembly to reduce the overall volume of the ultrasonic scalpel; and a scalpel body, one end of which is inserted into the mounting cavity and connected to the transducer.

[0020] Optionally, the movable component includes an elbow assembly and a pipe bending assembly. The elbow assembly is disposed on the pipe bending assembly and connected to the outer rod of the cutter head assembly. The elbow assembly is connected to the pull rope so that it can swing arbitrarily under the action of the pull rope and drive the cutter head assembly to move.

[0021] One end of the bent tube assembly is connected to the inner rod of the cutter head assembly, and the other end of the bent tube assembly is connected to a slider. The slider is slidably disposed inside the instrument rod. The tension rope and the push rope are respectively fixed on the slider so as to open or close the cutter head assembly under the action of the tension rope and the push rope.

[0022] Optionally, the bending assembly includes a sleeve, a bending tube, a clamp, and a push-pull rod. The sleeve is fitted onto the bending tube, one end of the bending tube is fixed to the clamp, the other end of the bending tube is connected to the push-pull rod, the clamp is engaged and fixed to the inner rod of the cutter head assembly, and the push-pull rod is connected and fixed to the slider.

[0023] Optionally, the chuck head is provided with a cable routing hole for the cable of the transducer of the blade assembly to pass through.

[0024] Optionally, the elbow assembly is provided with a boss, and the outer rod is provided with a snap-fit ​​groove corresponding to the position of the boss. The boss is snapped into the snap-fit ​​groove, and the outer rod is connected and fixed to the elbow assembly by a connecting pin.

[0025] In the technical solution of this invention, the blade assembly includes a housing assembly, a transducer, and a blade body. The housing assembly has a mounting cavity, the transducer is disposed within the mounting cavity and is adapted to be connected to the control board of the ultrasonic scalpel via a cable, and one end of the blade body is inserted into the mounting cavity and connected to the transducer. It is understood that by integrating the transducer into the blade assembly, this invention reduces the overall size of the ultrasonic scalpel, avoids the use of a rigid structure in the connection between the blade assembly and the base, improves the operational flexibility and operating space of the ultrasonic scalpel, and ensures efficient energy transfer between the transducer and the blade. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the multi-degree-of-freedom ultrasonic scalpel of the present invention;

[0028] Figure 2 This is an internal structural diagram of an embodiment of the multi-degree-of-freedom ultrasonic scalpel of the present invention;

[0029] Figure 3 This is a schematic diagram of the cutter head assembly in a closed state in one embodiment of the multi-degree-of-freedom ultrasonic cutter of the present invention;

[0030] Figure 4 This is a schematic diagram of the cutter head assembly in the open state in one embodiment of the multi-degree-of-freedom ultrasonic cutter of the present invention;

[0031] Figure 5 This is a cross-sectional view of the cutter head assembly in one embodiment of the multi-degree-of-freedom ultrasonic cutter of the present invention;

[0032] Figure 6 This is a schematic diagram showing the connection between the cutter head assembly and the movable assembly in one embodiment of the multi-degree-of-freedom ultrasonic scalpel of the present invention;

[0033] Figure 7 This is a schematic diagram of the bending tube assembly in one embodiment of the multi-degree-of-freedom ultrasonic scalpel of the present invention.

[0034] Explanation of icon numbers:

[0035] 100. Cutter head assembly; 10. Housing assembly; 20. Transducer; 30. Cutter body; 10a. Mounting cavity; 31. Cutter head; 32. Cutter shank; 201. Protrusion; 321. Groove; 11. Outer rod; 12. Inner rod; 121. Positioning pin; 200. Base; 300. Reel assembly; 400. Instrument rod; 500. Movable assembly; 301. Pull rope; 302. Thrust rope; 303. Pull rope; 510. Elbow assembly; 520. Bend assembly; 601. Slider; 521. Sleeve; 522. Bend; 523. Chuck; 524. Push-pull rod; 523a. Wiring hole; 11a. Clip groove; 511. Boss; 211. Connection port; 310. Chuck assembly; 320. Gear assembly; 330. Rope winding rod; 111. Connecting pin.

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this invention 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, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. 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 invention.

[0040] This invention proposes a blade assembly that can be applied to ultrasonic scalpels, but is not limited thereto.

[0041] Reference Figures 1 to 6 In one embodiment of the present invention, the blade assembly 100 includes a housing assembly 10, a transducer 20, and a blade body 30. The housing assembly 10 has a mounting cavity 10a. The transducer 20 is disposed in the mounting cavity 10a and is adapted to be connected to the control board of the ultrasonic scalpel via a cable. One end of the blade body 30 is inserted into the mounting cavity 10a and connected to the transducer 20. The transducer 20 is integrated into the housing assembly 10, thus reducing the overall size of the ultrasonic scalpel.

[0042] In this embodiment, the blade body 30 includes a blade head 31 and a blade shank 32. One end of the blade head 31 is rotatably mounted on the end of the housing assembly 10, and the blade shank 32 is inserted into the mounting cavity 10a and connected to the transducer 20. The housing assembly 10 includes an outer rod 11 and an inner rod 12. The inner rod 12 abuts against the blade head 31 and is movably disposed within the outer rod 11 along the axial direction of the outer rod 11 to adjust the opening or closing of the blade head 31 relative to the blade shank 32.

[0043] The fixed end of the cutter head 31 can be hinged to the outer end of the outer rod 11, and the fixed end of the cutter bar 32 can be set inside the inner rod 12 and fixed together with the transducer 20 inside by means of snap-fit, threaded connection or adhesive bonding, etc. The specific connection method is not limited here.

[0044] It is understood that by integrating the transducer 20 into the blade assembly 100, the present invention avoids the use of a rigid structure in the connection structure between the blade assembly 100 and the ultrasonic scalpel base 200, which is beneficial to improving the operational flexibility and operating space of the ultrasonic scalpel instrument, and ensures the high efficiency of energy transfer between the transducer 20 and the blade 31.

[0045] In addition, compared with the prior art, the present invention reduces the size of the transducer 20 and the length of the blade 32, and integrates the two into one, making it possible to realize a multi-degree-of-freedom ultrasonic scalpel.

[0046] To improve the stability of the connection between transducer 20 and cutter head 32, and to further enhance the efficiency and stability of energy transfer between transducer 20 and cutter head 31, please refer to the following: Figure 5 In one embodiment, the transducer 20 may be provided with a protrusion 201, and the tool bar 32 may be provided with a groove 321 corresponding to the position of the protrusion 201, with the protrusion 201 embedded in the groove 321.

[0047] Reference Figure 5 In one embodiment, a limiting hole may be provided at the end of the inner rod 12 away from the cutter head 31, and a positioning pin 121 is inserted into the limiting hole to limit the range of axial movement of the inner rod 12 along the outer rod 11. In this way, through the cooperation between the limiting hole at the end of the inner rod 12 and the positioning pin 121, the inner rod 12 can be driven to move axially when the ultrasonic scalpel bending tube assembly 520 is pushed and pulled, thereby driving the cutter head 31 to close and open, effectively controlling the opening angle and closing degree of the cutter head 31.

[0048] The limiting hole can be a long strip-shaped slot or the like, and is not limited here.

[0049] This invention also proposes a multi-degree-of-freedom ultrasonic scalpel.

[0050] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the multi-degree-of-freedom ultrasonic scalpel includes a scalpel head assembly 100, a base 200, a scroll assembly 300, an instrument rod 400, and a movable component 500. The scroll assembly 300 is disposed within the base 200, and a tension rope 301, a push rope 302, and a pull rope 303 are respectively wound around the scroll assembly 300. One end of the instrument rod 400 is fixed to the base 200, and the tension rope 301, the push rope 302, and the pull rope 303 are respectively threaded through the instrument rod 400. The movable component 500 is disposed at the other end of the instrument rod 400, and is connected to the tension rope 301, the push rope 302, and the pull rope 303, so as to move along the axial direction of the instrument rod 400 under the action of the tension rope 301 and the push rope 302, and swing arbitrarily under the action of the pull rope 303. The inner rod 12 of the cutter head assembly 100 is connected to the movable assembly 500 to open or close under the action of the movable assembly 500.

[0051] Among them, the tension rope 301, the push rope 302 and the pulling rope 303 can be one or more, and the number can be the same or different, which is not limited here.

[0052] Main reference Figure 2In this embodiment, the reel assembly 300 may include components such as a chuck assembly 310, a gear assembly 320, a rope winding rod 330, a tension reel, and a push reel. The chuck assembly 310 serves as an input shaft suitable for connection to a drive device such as a motor. A tension rope 301 is wound on the tension reel, a push rope 302 is wound on the push reel, and a pulling rope 303 is wound on the rope winding rod 330. The chuck assembly 310 is fixed to a bearing within the base 200. The cutter head chuck of the chuck assembly 310 is connected to the gear assembly 320, which engages with the tension reel and the push reel, respectively, thereby opening or closing the cutter head assembly 100 by pulling the tension rope 301 and pushing the push rope 302. The bent chuck of the chuck assembly 310 is connected to the rope winding rod 330, thereby oscillating the cutter head assembly 100 by pulling the pulling rope 303.

[0053] Reference Figure 1 and Figure 2 In this embodiment, the movable component 500 may include an elbow component 510 and a bend component 520, etc. The elbow component 510 is disposed on the bend component 520 and connected to the outer rod 11 of the cutter head component 100. The elbow component 510 is connected to the pull rope 303 so that it can swing arbitrarily under the action of the pull rope 303 and drive the cutter head component 100 to move. One end of the bend component 520 is connected to the inner rod 12 of the cutter head component 100, and the other end of the bend component 520 is connected to the slider 601. The slider 601 is slidably disposed in the groove inside the instrument rod 400. The tension rope 301 and the push rope 302 are respectively fixed on the slider 601 so that the cutter head component 100 can be opened or closed under the action of the tension rope 301 and the push rope 302.

[0054] Of course, in some other embodiments, the transmission mechanism between the bending assembly 520 and the reel assembly 300 can also be configured as a ball screw structure, etc., which is not limited here.

[0055] It is understood that the present invention provides a multi-degree-of-freedom ultrasonic scalpel by placing a scroll assembly 300 within a base 200, with a tension rope 301, a push rope 302, and a pull rope 303 wound around the scroll assembly 300; fixing one end of an instrument rod 400 to the base 200, with the tension rope 301, push rope 302, and pull rope 303 passing through the instrument rod 400; and placing a movable component 500 on the instrument rod 400, which is connected to the tension rope 301, push rope 302, and pull rope 303, allowing it to move axially along the instrument rod 400 under the action of the tension rope 301 and push rope 302 and swing arbitrarily under the action of the pull rope 303; the inner rod 12 of the blade assembly 100 is connected to the movable component 500, allowing it to open or close under the drive of the movable component 500. This design greatly improves the operational flexibility and operating space of the ultrasonic scalpel instrument, effectively enhancing the convenience of surgical procedures.

[0056] Reference Figure 7 In one embodiment, the bending tube assembly 520 may include a sleeve 521, a bending tube 522, a clamp 523, and a push-pull rod 524. The sleeve 521 is sleeved on the bending tube 522. One end of the bending tube 522 is fixed to the clamp 523, and the other end of the bending tube 522 is connected to the push-pull rod 524. The clamp 523 is clamped and fixed to the inner rod 12 of the cutter head assembly 100, and the push-pull rod 524 is connected and fixed to the slider 601.

[0057] Among them, the sleeve 521 can be made of soft rubber or other materials, and the bend 522 can be made of materials that are flexible, deformable and can automatically recover, etc. No specific restrictions are made here.

[0058] It should be noted that when the elbow assembly 510 bends, the pipe bending assembly 520 can also bend synchronously. Due to the structural characteristics of the pipe bending 522, the pipe bending assembly 520 can push and pull as guided by its end pipe bending 522 while bending, thereby adjusting the opening and closing state of the cutter head assembly 100.

[0059] Furthermore, such as Figure 1 and Figure 6 As shown, the clamp 523 of the bend assembly 520 may be provided with a cable routing hole 523a for the cable of the transducer 20 of the cutter head assembly 100 to pass through. This facilitates the arrangement of the transducer 20's cable, which passes through the cable routing hole 523a into the sleeve 521, then into the base 200 and connects to its wiring port 211, thereby connecting to the control board. Furthermore, by adopting the above-mentioned cable routing structure, interference or impact on the normal operation of other components (such as the bend assembly 510, the slider 601, and the various ropes mentioned above) by the transducer 20's cable is effectively avoided, improving the user experience of the ultrasonic scalpel.

[0060] In addition, refer to Figure 1 and Figure 6 In some embodiments, the elbow assembly 510 may be provided with a boss 511, and the outer rod 11 may be provided with a snap-fit ​​groove corresponding to the position of the boss 511, and the boss 511 and the snap-fit ​​groove are engaged. In this way, it is convenient to install the elbow assembly 510 and the outer rod 11 of the cutter head assembly 100.

[0061] Reference Figure 1 and Figure 6 In this embodiment, the outer rod 11 can be fastened to the elbow assembly 510 through the connecting pin 111, and the boss 511 of the elbow assembly 510 is fastened to the fastening groove at the end of the outer rod 11, so that the outer rod 11 can swing freely with the elbow assembly 510, further improving the operational flexibility of the ultrasonic scalpel instrument.

[0062] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-degree of freedom ultrasonic blade, comprising: The ultrasonic knife comprises: a head assembly, comprising: a housing assembly provided with a mounting cavity, the housing assembly comprising an outer rod and an inner rod; a transducer arranged in the mounting cavity and adapted to be connected to a control panel of the ultrasonic knife through a cable, the transducer being integrated in the housing assembly to reduce the overall volume of the ultrasonic knife; and a blade body, one end of the blade body being inserted into the mounting cavity and connected to the transducer; a base; a reel assembly arranged in the base, the reel assembly being wound with a tensioning rope, a pushing rope and a pulling rope respectively; an instrument rod, one end of the instrument rod being fixed to the base, the tensioning rope, the pushing rope and the pulling rope being arranged through the instrument rod respectively; and a movable assembly arranged at the other end of the instrument rod, the movable assembly being connected to the tensioning rope, the pushing rope and the pulling rope respectively to move along the axial direction of the instrument rod under the action of the tensioning rope and the pushing rope and to swing arbitrarily under the action of the pulling rope; the inner rod of the head assembly is connected to the movable assembly to be opened or closed under the driving of the movable assembly; the movable assembly comprises an elbow assembly, one end of the elbow assembly being connected to the inner rod of the head assembly, the other end of the elbow assembly being connected to a sliding block, the sliding block being slidingly arranged in the instrument rod, the tensioning rope and the pushing rope being fixed on the sliding block to open or close the head assembly under the action of the tensioning rope and the pushing rope; the elbow assembly comprises a sleeve, an elbow, a clamping head and a push-pull rod, the sleeve being sleeved on the elbow, one end of the elbow being fixed to the clamping head, the other end of the elbow being connected to the push-pull rod, the clamping head being clamped and fixed to the inner rod of the head assembly, the push-pull rod being connected and fixed to the sliding block; the movable assembly comprises an elbow assembly, the elbow assembly being arranged on the elbow assembly and connected to the outer rod of the head assembly, the elbow assembly being connected to the pulling rope to swing arbitrarily under the action of the pulling rope and to drive the head assembly to move; the elbow assembly is provided with a boss, the outer rod is provided with a buckle slot corresponding to the position of the boss, the boss is buckled with the buckle slot, and the outer rod is connected and fixed to the elbow assembly through a connecting pin.

2. The ultrasonic blade of claim 1, wherein, the blade body comprises a blade head and a blade rod, one end of the blade head being rotatably arranged on the end of the housing assembly, the blade rod being inserted into the mounting cavity and connected to the transducer.

3. The ultrasonic blade of claim 2, wherein, the transducer is provided with a convex part, the blade rod is provided with a matching groove corresponding to the position of the convex part, and the convex part is embedded in the groove.

4. The ultrasonic blade of claim 2, wherein, the inner rod is abutted to the blade head and movably arranged in the outer rod along the axial direction of the outer rod to adjust the opening or closing of the blade head relative to the blade rod.

5. The ultrasonic blade of claim 4, wherein, one end of the inner rod away from the blade head is provided with a limiting hole, a positioning pin is inserted into the limiting hole to limit the range of movement of the inner rod along the axial direction of the outer rod.

6. The ultrasonic shears of claim 1, wherein, the clamping head is provided with a wire hole for the cable of the transducer of the head assembly.

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