Ultrasonic knife device with telescopic and rotatable knife bar

Abstract

The ultrasonic scalpel device comprises a base, an instrument rod, an inner rod, a scalpel head, the scalpel rod, a scalpel head transmission mechanism, a scalpel rod telescoping mechanism and a scalpel rod rotating mechanism. The instrument rod is of a hollow structure, one end of the instrument rod is located in the base, the inner rod is movably arranged in the instrument rod and is of a hollow structure, and the cutter rod is movably arranged in the inner rod; the tool bit transmission mechanism is connected with the inner rod and can drive the tool bit to be opened and closed through the inner rod. The cutter bar telescoping mechanism is used for driving the cutter bar to axially telescope, the cutter bar rotating mechanism is fixedly connected with the cutter bar, and the cutter bar rotating mechanism is used for driving the cutter bar to rotate; the cutter bar telescoping mechanism and the cutter bar rotating mechanism are arranged in the base, the input end of the cutter bar rotating mechanism is connected with the first input part, the input end of the cutter bar telescoping mechanism is connected with the second input part, and the first input part and the second input part are fixed in the base and suitable for being externally connected with a driving device respectively. The ultrasonic knife device disclosed by the utility model has better flexibility, is beneficial to operation of an operation, reduces tissue damage, is beneficial to grasping and pulling tissues, can shorten the operation time and improves the working efficiency of a doctor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, particularly relates to a knife rod telescopic rotatable ultrasonic knife device. BACKGROUND

[0002] The ultrasonic knife, also called ultrasonic cutting hemostatic knife, works by converting electric energy into high-frequency mechanical energy through piezoelectric ceramics in the transducer, and the high-frequency mechanical vibration of the knife rod acts on the tissue to make the protein of the tissue coagulate, achieving the effect of stripping the tissue and closing the blood vessels. Compared with the traditional electric knife, the ultrasonic knife causes less damage to the tissue, so it is used more and more in clinical applications.

[0003] In the prior art, the knife rod of the ultrasonic knife is fixed relative to the whole instrument, which limits its flexibility to some extent and is not conducive to the operation of the surgery. In addition, in order to enable the knife rod to obtain high-frequency vibration energy of a specific frequency, the front end of the knife rod is designed to be smooth, and although there is a toothed structure on the knife head, when the ultrasonic knife is closed, the knife rod is parallel to the knife head, and the gripping force after closure is small, which is not conducive to the operation of the surgery. SUMMARY

[0004] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0005] A knife rod telescopic rotatable ultrasonic knife device, comprising a base, an instrument rod, an inner rod, a knife head, a knife rod, a knife head transmission mechanism, a knife rod telescopic mechanism, and a knife rod rotating mechanism; the instrument rod is a hollow structure, one end of the instrument rod is located in the base, the inner rod is movably arranged in the instrument rod, the inner rod is a hollow structure, and the knife rod is movably arranged in the inner rod; the knife head transmission mechanism is connected to the inner rod and can drive the knife head to open and close through the inner rod; the knife rod telescopic mechanism is used to drive the knife rod to axially telescope, the knife rod rotating mechanism is fixedly connected with the knife rod, and the knife rod rotating mechanism is used to drive the knife rod to rotate; the knife rod telescopic mechanism and the knife rod rotating mechanism are arranged in the base, an input end of the knife rod rotating mechanism is connected with a first input part, an input end of the knife rod telescopic mechanism is connected with a second input part, and the first input part and the second input part are fixed in the base and are adapted to be respectively externally connected with driving devices.

[0006] Further, the knife head transmission mechanism comprises a knife head gear assembly and a knife head lead screw, the knife head gear assembly can drive the knife head lead screw to axially move, the knife head gear assembly is arranged in the base, and an input end of the knife head gear assembly is connected with a third input part, the third input part is fixed in the base and is adapted to be externally connected with a driving device.

[0007] Further, the cutter bar rotating mechanism comprises a cutter bar rotating driving gear, a cutter bar rotating intermediate gear and a cutter bar rotating driven gear, the cutter bar rotating driving gear is installed in cooperation with the first input part; the cutter bar rotating driving gear is engaged with the cutter bar intermediate gear, the cutter bar rotating intermediate gear is engaged with the cutter bar driven gear, and the cutter bar driven gear is fixedly connected with the cutter bar.

[0008] Further, the cutter bar telescopic assembly comprises a cutter bar telescopic driving gear, a cutter bar telescopic intermediate gear and a cutter bar telescopic driven gear, the cutter bar telescopic driving gear is installed in cooperation with the second input part.

[0009] Further, the cutter bar telescopic assembly comprises a cutter bar telescopic driving reel, a cutter bar telescopic driven reel, a first tension steel wire rope and a second tension steel wire rope, the cutter bar telescopic driving reel is installed in cooperation with the second input part.

[0010] Further, the second input part is a cutter bar telescopic chuck, the cutter bar telescopic driving reel and the cutter bar telescopic chuck are fixedly connected, the cutter bar telescopic driving reel and the cutter bar telescopic chuck are provided with spiral grooves in opposite directions, one end of the first tension steel wire rope and the second tension steel wire rope is fixedly connected to the cutter bar telescopic driving reel and the cutter bar telescopic chuck respectively, and the other end of the first tension steel wire rope and the second tension steel wire rope is fixedly connected to the spiral grooves in opposite directions of the cutter bar telescopic driven reel.

[0011] Further, the cutter bar rotating driven gear is axially movable, the cutter bar rotating driven gear comprises a gear part and a screw rod, the cutter bar telescopic driven gear or the cutter bar telescopic driven reel comprises an internally threaded hole, the screw rod of the cutter bar telescopic driven gear is engaged with the thread of the internally threaded hole, the cutter bar telescopic driven gear or the cutter bar telescopic driven reel drives the cutter bar rotating driven gear to axially move, and the cutter bar telescopic driven gear synchronously drives the cutter bar to axially move.

[0012] Further, when the cutter bar rotating operation is performed, the cutter bar rotating assembly and the cutter bar telescopic assembly work synchronously.

[0013] Further, the ultrasonic knife device further comprises a rotating assembly, the rotating assembly can drive the instrument rod and the inner rod to rotate, the rotating assembly comprises a rotating driving gear and a rotating driven gear engaged with the rotating driving gear.

[0014] Further, the rotating driven gear is a hollow structure, one end of the instrument rod is inserted into the hollow structure of the rotating driven gear, the rotating driven gear is provided with rotating driven gear holes oppositely arranged along the circumference, the instrument rod is provided with instrument rod holes oppositely arranged along the circumference, and the inner rod is provided with an inner rod waist hole at a corresponding position, and a connecting pin passes through the rotating driven gear hole, the instrument rod hole and the inner rod waist hole.

[0015] Further, the connecting pins are two, the passive gear holes and the instrument rod holes are two groups respectively, each group includes two holes, the two passive gear holes of each group are correspondingly arranged, and the two instrument rod holes of each group are correspondingly arranged; the inner rod waist-shaped holes include two; each connecting pin respectively passes through a group of passive gear holes, a group of instrument rod holes and an inner rod waist-shaped hole.

[0016] The knife rod of the ultrasonic knife device can be telescopic and rotatable, the knife rod is used as a cutting knife when the knife rod is extended, and the knife rod is used as a grabbing forceps and a cutting knife when the knife rod is retracted. The knife rod can be extended by a distance forward, so that the knife head is away from the tissue in a narrow operation space, and the knife head does not occupy the visual field space, and the tissue is cut by using high-frequency mechanical vibration of the knife rod; and when the knife rod is used as the grabbing forceps, the knife head can be rotated by a certain angle, such as 90 degrees, to form a sharp end closed grabbing forceps structure with the knife head, which is beneficial to holding and pulling the tissue; and the knife rod can be rotated independently of the knife head and the instrument rod by the gear structure in the base.

[0017] After adopting the design, the ultrasonic knife device has at least the following advantages:

[0018] 1. The holding force of the ultrasonic knife is improved, which is beneficial to holding and pulling the tissue, shortens the operation time and improves the operation efficiency of the doctor.

[0019] 2. The knife rod is telescopic, has better flexibility, is beneficial to the operation of the operation, reduces the tissue damage and shortens the operation time.

[0020] 2. The knife rod is independently rotated from the instrument rod and the knife head, and the flexibility of the instrument operation is improved.

[0021] 3. The ultrasonic knife device has simple structure, good effect, low cost and easy process implementation. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above is only a summary of the technical scheme of the ultrasonic knife device, in order to more clearly understand the technical means of the ultrasonic knife device, the ultrasonic knife device will be further described in detail in combination with the drawings and the specific embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the ultrasonic knife device of the utility model;

[0024] Figure 2 It is a schematic diagram of the end cross section of the knife head of the ultrasonic knife device of the utility model;

[0025] Figure 3 It is a schematic diagram of the cooperation of the knife head and the knife head rotating shaft of the ultrasonic knife device of the utility model;

[0026] Figure 4 It is a schematic diagram of the internal structure of the base of the first embodiment of the ultrasonic knife device of the utility model;

[0027] Figure 5 It is the bottom seat section view schematic drawing of the ultrasonic knife device first embodiment of the utility model;

[0028] Figure 6 It is the bottom seat internal structure schematic drawing of the ultrasonic knife device second embodiment of the utility model;

[0029] Figure 7 It is the rotation driving gear structure schematic drawing of the ultrasonic knife device of the utility model;

[0030] Figure 8 It is the connecting pin and inner rod cooperation structure schematic drawing of the ultrasonic knife device of the utility model

[0031] Figure 9 It is the knife rod non-rotation and non-extension state schematic drawing of the ultrasonic knife device of the utility model;

[0032] Figure 10 It is the knife rod rotation state schematic drawing of the ultrasonic knife device of the utility model;

[0033] Figure 11 It is the knife rod extension state schematic drawing of the ultrasonic knife device of the utility model.

[0034] The reference signs, 10 bottom seat, 11 middle layer support, 12 top layer support, 20 instrument rod, 21 inner rod, 211 inner rod waist type hole, 311 knife head driving gear, 312 knife head driven gear, 32 knife head screw rod, 33 knife head chuck, 411 knife rod rotation driving gear, 412 knife rod rotation intermediate gear, 413 knife rod rotation driven gear, 43 knife rod rotation chuck, 44 knife rod fixed pin shaft, 451 first blocking ring, 452 second blocking ring, 453 third blocking ring, 454 fourth blocking ring, 455 fifth blocking ring, 456 sixth blocking ring, 50 knife head, 51 knife head rotation shaft, 52 rotation pin, 60 knife rod, 61 knife rod rubber sleeve, 611 knife rod extension driving gear, 612 knife rod extension intermediate gear, 613 knife rod extension driven gear, 621 knife rod extension driving reel, 622 knife rod extension driven reel, 63 knife rod extension chuck, 71 rotation driving gear, 72 rotation driven gear, 73 rotation chuck, 74 connecting pin. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0036] In this article, "up", "down", and the like are only used to represent the relative positional relationship between the relevant parts, not to limit the absolute position of the relevant parts.

[0037] Referring to the drawings Figures 1-11 A kind of retractable rotatable ultrasonic knife device of blade bar, including: base 10, instrument rod 20, inner rod 21, tool bit 50, blade bar 60, tool bit transmission mechanism, blade bar telescopic mechanism, blade bar rotating mechanism;Instrument rod 20 is hollow structure, one end of the instrument rod is located in base 10, inner rod 21 is movably arranged in instrument rod 20, inner rod 21 is hollow structure, blade bar 60 is movably arranged in inner rod 21;Tool bit transmission mechanism is connected with inner rod 21 and can be driven tool bit 50 to open and close by inner rod 21;Blade bar telescopic mechanism is used to drive blade bar 60 axial telescopic, blade bar rotating mechanism is fixedly connected with blade bar 60, blade bar rotating mechanism is used to drive blade bar 60 to rotate;Blade bar telescopic mechanism and blade bar rotating mechanism are located in base 10, the input end of blade bar rotating mechanism is connected with first input part, the input end of blade bar telescopic mechanism is connected with second input part, first input part and second input part are fixed in base 10 and are suitable for being driven respectively by external device.

[0038] The tool head transmission mechanism comprises a tool head gear assembly and a tool head screw rod 32, the tool head gear assembly can drive the tool head screw rod 32 to move axially, the tool head gear assembly 31 is arranged in the base 10, and an input end of the tool head gear assembly 31 is connected with the third input part, the third input part is fixed in the base 10 and is adapted to be externally connected with a driving device. The tool head gear assembly 31 comprises a plurality of gears, preferably, the tool head gear assembly 31 comprises a tool head driving gear 311 and a tool head driven gear 312 engaged with the tool head driving gear 311, the tool head driving gear 311 is connected with the third input part, and a thread is arranged in the middle of the tool head driven gear 312, which cooperates with the tool head screw rod 32; wherein the third input part is a tool head chuck 33, the tool head chuck 33 is installed in cooperation with the tool head driving gear 311, the tool head chuck 33 can be externally connected with a surgical robot, the surgical robot can drive the tool head chuck 33 to rotate, the tool head chuck 33 drives the tool head driving gear 311 to rotate synchronously, the tool head driving gear 311 drives the tool head driven gear 312 to rotate, and the tool head driven gear 312 drives the tool head screw rod 32 to move axially through the thread. The top end of the tool head screw rod 32 is sleeved into one end of the inner rod 21 and is fixed, preferably, the fixing mode is welding, and the tool head screw rod 32 drives the inner rod 21 to move axially up and down when moving axially. Two tool head rotating shafts 51 are arranged on the tool head 50, the two tool head rotating shafts 51 are respectively sleeved into two round holes arranged correspondingly on the other end of the inner rod 21, and in addition, a rotating pin 52 is arranged, the rotating pin 52 passes through two rotating pin holes arranged correspondingly on the one end of the instrument rod 20 and a tool head through hole arranged correspondingly on the tool head 50, and the tool head 50 can rotate around the rotating pin 52. When the inner rod 21 moves axially, the tool head 50 is driven to rotate around the rotating pin 52 through the tool head rotating shaft 51, so that the closing and opening of the tool head 50 are realized.

[0039] The knife rod rotating mechanism comprises a plurality of gears, preferably, the knife rod rotating mechanism comprises a knife rod rotating driving gear 411, a knife rod rotating intermediate gear 412 and a knife rod rotating driven gear 413, the knife rod rotating driving gear 411 is installed in cooperation with the first input part, preferably, the first input part is a knife rod rotating chuck 43; the knife rod rotating driving gear 411 is engaged with the knife rod rotating intermediate gear 412, and the knife rod rotating intermediate gear 412 is engaged with the knife rod rotating driven gear 413. The knife rod rotating driven gear 413 is fixedly connected with the knife rod 60, preferably, the knife rod rotating driven gear 413 and the knife rod 60 are connected through a knife rod fixing pin shaft 44. Preferably, a knife rod rubber sleeve 61 is arranged on the knife rod 60, and a knife rod fixing pin shaft rubber sleeve is arranged on the knife rod fixing pin shaft 44, the knife rod fixing pin shaft sleeved with the knife rod fixing pin shaft rubber sleeve passes through the knife rod rotating driven gear 413, the knife rod rubber sleeve 61 and the knife rod 60 to fix the knife rod 60 and the knife rod rotating driven gear 413 together. The arrangement of the rubber sleeve can effectively eliminate the damage of the device caused by the rigid collision between the components.

[0040] The knife rod rotating chuck 43 can be connected with a surgical robot, the surgical robot can drive the knife rod rotating chuck 43 to rotate, the knife rod rotating chuck 43 can drive the knife rod rotating driving gear 411 to rotate synchronously, the knife rod rotating driving gear 411 drives the knife rod rotating intermediate gear 412 to rotate, the knife rod rotating intermediate gear 412 drives the knife rod rotating driven gear 413 to rotate, and the knife rod rotating driven gear 413 drives the knife rod 60 to rotate. Since the knife rod head has a curved portion with an arc, after the knife rod rotates by a certain angle, the curved portion is opposite to the knife head, at this time, the curved portion and the knife head form a pointed end closed intermediate hollow gripper structure, which is beneficial to holding and pulling the tissue. The state of the knife rod before rotation is shown in Figure 8 , and the state of the knife rod after rotation is shown in Figure 9 .

[0041] In an embodiment, the knife rod telescopic assembly comprises a plurality of gears, preferably, the knife rod telescopic assembly comprises a knife rod telescopic driving gear 611, a knife rod telescopic intermediate gear 612 and a knife rod telescopic driven gear 613, the knife rod telescopic driving gear 611 is installed in cooperation with the second input part, preferably, the second input part is a knife rod telescopic chuck 63, the knife rod telescopic driving gear 611 is engaged with the knife rod telescopic intermediate gear 612, and the knife rod telescopic intermediate gear 612 is engaged with the knife rod telescopic driven gear 613. The knife rod rotating driven gear 413 can move axially, the knife rod rotating driven gear 413 comprises a gear part and a screw rod, the knife rod telescopic driven gear 613 comprises an internal threaded hole, and the threads of the internal threaded hole of the knife rod telescopic driven gear 613 cooperate with the threads of the screw rod of the knife rod rotating driven gear; the knife rod telescopic chuck 63 can be connected with a surgical robot, the surgical robot can drive the knife rod telescopic chuck 63 to rotate, the knife rod telescopic chuck 63 can drive the knife rod telescopic driving gear 611 to rotate synchronously, the knife rod telescopic driving gear 611 drives the knife rod telescopic intermediate gear 612 to rotate, the knife rod telescopic intermediate gear 612 drives the knife rod telescopic driven gear 613 to rotate, and the rotation of the knife rod telescopic driven gear 613 drives the knife rod rotating driven gear 613 to move axially through the threads. Since the knife rod rotating driven gear 613 and the knife rod are connected and fixed through the knife rod fixing pin shaft 44, when the knife rod rotating driven gear 613 moves axially, the knife rod 60 is driven to extend and retract synchronously. The state of the knife rod before extension is shown in Figure 8 , and the state of the knife rod after extension is shown in Figure 10 .

[0042] In another embodiment, the cutter bar telescopic assembly comprises a cutter bar telescopic driving reel 621, a cutter bar telescopic driven reel 622, a first tension steel wire 623 and a second tension steel wire 624; the cutter bar telescopic driven reel comprises an internal threaded hole, the thread of the telescopic driven reel internal threaded hole matches the thread of the cutter bar rotation driven gear screw rod; the cutter bar telescopic driving reel 621 is installed on the cutter bar telescopic driving chuck 63 and can rotate synchronously with the cutter bar telescopic chuck 63. The cutter bar telescopic driving reel 621 and the cutter bar telescopic chuck 63 are provided with two spiral grooves in opposite directions, one end of the first tension steel wire 622 and the second tension steel wire 623 are fixed on the cutter bar telescopic driving reel 621 and the cutter bar telescopic chuck 63 respectively, and the other end of the two steel wires are fixed in the two spiral grooves in opposite directions of the cutter bar telescopic driven reel 622 respectively; when the cutter bar telescopic chuck 63 rotates, it drives the telescopic driving reel 621 to rotate synchronously, thereby driving the first tension steel wire 623 and the second tension steel wire 624 to rotate, and further driving the cutter bar telescopic driven reel 622 to rotate in opposite directions. The rotation of the cutter bar telescopic driven reel 622 drives the cutter bar rotation driven gear screw rod 613 to move axially through the thread, thereby synchronously driving the cutter bar 60 to move axially. The state of the cutter bar not being extended is shown in Figure 8 , and the state of the cutter bar being extended is shown in Figure 10 .

[0043] When the cutter bar is extended, it is only used as a cutting knife, and when the cutter bar is retracted, it can be used as a grabbing clamp and a cutting knife. When the cutter bar is extended, it extends forward by a distance, thereby making the cutter head away from the tissue in a narrow operation space, and the cutter head does not occupy the visual field space. The use of high-frequency mechanical vibration of the cutter bar to cut the tissue can reduce tissue damage and shorten the operation time. When the cutter bar is retracted, it cooperates with the cutter head to grab and pull the tissue.

[0044] It should be noted that when the cutter bar rotation operation is performed, the cutter bar rotation driven gear 413 rotates, and since its thread matches the thread of the cutter bar telescopic driven gear 613 or the telescopic driven reel 622, and the cutter bar telescopic driven gear 613 or the telescopic driven reel 622 can only rotate and cannot move axially, the rotation of the cutter bar rotation driven gear will drive the cutter bar to move axially. Therefore, in order to ensure that the cutter bar does not move axially and rotates normally when the cutter bar rotates, the cutter bar telescopic assembly is driven by the cutter bar telescopic chuck to work synchronously while the cutter bar rotation assembly works when the cutter bar rotation operation is performed, and the output of the surgical robot is set so that the cutter bar telescopic driven gear 613 or the telescopic driven reel 622 rotates synchronously with the cutter bar rotation driven gear, so as to ensure that the cutter bar rotation driven gear 413 works normally, thereby ensuring that the cutter bar 60 rotates normally.

[0045] The ultrasonic knife device further comprises a rotating assembly which can rotate the instrument rod 20 and the inner rod 21. The rotating assembly comprises a rotating driving gear 71 and a rotating driven gear 72 engaged with the rotating driving gear 71. The rotating driven gear 72 is a hollow structure, one end of the instrument rod 20 penetrates into the hollow structure of the rotating driven gear, and the rotating driven gear 72 is provided with rotating driven gear holes arranged in a circle and opposite to each other. The instrument rod 20 is provided with instrument rod holes arranged in a circle and opposite to each other, and the inner rod 21 is provided with inner rod waist-shaped holes 211 at a corresponding position. The connecting pin 74 penetrates through the rotating driven gear holes, the instrument rod holes and the inner rod waist-shaped holes 211. The size of the inner rod waist-shaped holes 211 is set so that the axial movement of the inner rod 21 is not affected by the connecting pin 74. Further, the connecting pin 74 is two, the driven gear holes and the instrument rod holes are two groups respectively, each group comprises two holes, and the two driven gear holes of each group are correspondingly arranged, and the two instrument rod holes of each group are correspondingly arranged. The inner rod waist-shaped holes 211 comprise two. Each connecting pin 74 penetrates through a group of driven gear holes, a group of instrument rod holes and an inner rod waist-shaped hole respectively. Further, the rotating driving gear 71 is installed in cooperation with the fourth input part, the fourth input part is fixed in the base 10 and is suitable for being connected with a driving device externally. Preferably, the fourth input part is a rotating chuck 73. The rotating chuck 73 can be connected with a surgical robot. The surgical robot can drive the rotating chuck 73 to rotate, the rotating chuck 73 can drive the rotating driving gear 71 to rotate synchronously, the rotating driving gear 71 drives the rotating driven gear 72 to rotate when rotating, and the rotating driven gear 72 drives the instrument rod 20 and the inner rod 21 to rotate together when rotating. Due to the arrangement of the inner rod waist-shaped holes 211, the connecting pin 74 does not limit the axial movement of the inner rod, and the axial movement of the inner rod is not affected by the connecting pin 74.

[0046] It should be noted that the knife rod rotating mechanism and the rotating assembly work independently of each other. When the knife rod rotating mechanism rotates the knife rod, the instrument rod and the inner rod are not affected. When the rotating assembly rotates the instrument rod and the inner rod, the knife rod is not affected. Therefore, when operating the instrument, if it is necessary to rotate the instrument rod, the inner rod and the knife rod at the same time, the rotating assembly and the knife rod rotating assembly need to work at the same time. At this time, the output of the surgical robot is set to make the knife rod rotating chuck and the rotating chuck work synchronously, so as to drive the instrument rod, the inner rod and the knife rod to rotate synchronously.

[0047] The base 10 is internally provided with a middle layer support 11 and a top layer support 12, the cutter bar telescopic driving gear 611 passes through the base 10 and the top layer support 11 and is limited by the first stop ring 451, the cutter bar telescopic intermediate gear 612 passes through the base 10 and the top layer support 11 and is limited by the second stop ring 452, the cutter bar rotating driving gear 411 passes through the base 10 and the middle layer support 11 and is limited by the third stop ring 453, and the cutter head driving gear 311 passes through the base 10 and is limited by the fourth stop ring 454. The cutter bar telescopic chuck 43 is installed in the base in cooperation with bearings, passes through the middle layer support 11, is installed in the top layer support 12 in cooperation with bearings, and is axially limited by the fifth stop ring 455 in the cutter bar telescopic chuck; the cutter bar telescopic driven reel 622 passes through the top layer support 12 and cooperates with bearings and is axially limited by the sixth stop ring 456. The arrangement of the above stop rings can avoid the displacement of the gears under the vibration of the motor and the like driving devices, effectively improves the stability of assembly, and further guarantees the stability of the ultrasonic knife; in addition, one bearing or two bearings are arranged on the rotating driven gear, the cutter bar telescopic driven gear and the cutter head driven gear, and the arrangement of the bearings can improve the smoothness when the gears rotate.

[0048] Other embodiments of the utility model will be readily apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the utility model including its general principles and specific embodiments disclosed herein as a part of the utility model. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the utility model are indicated by the appended claims.

[0049] It should be understood that the utility model is not limited to the precise structures described herein and illustrated in the drawings and that various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is indicated by the appended claims rather than by the description.

Claims

1. A scalpel bar telescoping rotatable ultrasonic scalpel device comprising: The base, the instrument rod, the inner rod, the cutter head, the cutter rod, the cutter head transmission mechanism, the cutter rod telescopic mechanism, and the cutter rod rotating mechanism; The instrument rod is a hollow structure, one end of the instrument rod is located in the base, the inner rod is movably arranged in the instrument rod, the inner rod is a hollow structure, and the cutter rod is movably arranged in the inner rod; the cutter head transmission mechanism is connected with the inner rod and can drive the cutter head to open and close through the inner rod; the cutter rod rotating mechanism is fixedly connected with the cutter rod, the cutter rod rotating mechanism is used for driving the cutter rod to rotate, and the cutter rod telescopic mechanism is used for driving the cutter rod to axially extend and retract; The cutter rod telescopic mechanism and the cutter rod rotating mechanism are arranged in the base, an input end of the cutter rod rotating mechanism is connected with the first input part, and an input end of the cutter rod telescopic mechanism is connected with the second input part; the first input part and the second input part are fixed in the base and are adapted to be respectively externally connected with driving devices.

2. The ultrasonic shears device of claim 1, wherein the shears shaft is rotatably and telescopingly coupled to the handle by a rotatable coupling. The cutter head transmission mechanism comprises a cutter head gear assembly and a cutter head screw rod, the cutter head gear assembly can drive the cutter head screw rod to axially move, the cutter head gear assembly is arranged in the base, and an input end of the cutter head gear assembly is connected with the third input part; the third input part is fixed in the base and is adapted to be externally connected with a driving device.

3. The ultrasonic shears device of claim 1 or 2, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The cutter rod rotating mechanism comprises a cutter rod rotating driving gear, a cutter rod rotating intermediate gear and a cutter rod rotating driven gear, the cutter rod rotating driving gear is mounted in cooperation with the first input part; the cutter rod rotating driving gear is engaged with the cutter rod intermediate gear, the cutter rod intermediate gear is engaged with the cutter rod driven gear, and the cutter rod driven gear is fixedly connected with the cutter rod.

4. The ultrasonic shears device of claim 3, wherein the shears shaft is rotatably coupled to the shears housing by a bearing assembly. The cutter rod telescopic assembly comprises a cutter rod telescopic driving gear, a cutter rod telescopic intermediate gear and a cutter rod telescopic driven gear, and the cutter rod telescopic driving gear is mounted in cooperation with the second input part.

5. The ultrasonic shears device of claim 3, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The cutter rod telescopic assembly comprises a cutter rod telescopic driving reel, a cutter rod telescopic driven reel, a first tension steel wire rope and a second tension steel wire rope, and the cutter rod telescopic driving reel is mounted in cooperation with the second input part.

6. The ultrasonic shears device of claim 5, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The second input part is a cutter rod telescopic chuck, the cutter rod telescopic driving reel and the cutter rod telescopic chuck are fixedly connected, the cutter rod telescopic driving reel and the cutter rod telescopic chuck are provided with helical grooves in opposite directions, one end of the first tension steel wire rope and the second tension steel wire rope is fixedly connected to the cutter rod telescopic driving reel and the cutter rod telescopic chuck respectively, and the other end of the first tension steel wire rope and the second tension steel wire rope is fixedly connected to the helical grooves in opposite directions of the cutter rod telescopic driven reel.

7. The ultrasonic shears device of claim 4, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The cutter rod rotating driven gear is axially movable, the cutter rod rotating driven gear comprises a gear part and a screw rod, the cutter rod telescopic driven gear comprises an internal thread hole, the screw rod of the cutter rod rotating driven gear is threadedly connected with the internal thread hole, so that the cutter rod telescopic driven gear rotates to drive the cutter rod rotating driven gear to axially move, and the rotating driven gear synchronously drives the cutter rod to axially extend and retract.

8. The ultrasonic shears device of claim 5, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The cutter rod rotating driven gear is axially movable, the cutter rod rotating driven gear comprises a gear part and a screw rod, the cutter rod telescopic driven reel comprises an internal thread hole, the screw rod of the cutter rod rotating driven gear is threadedly connected with the internal thread hole, so that the cutter rod telescopic driven reel rotates to drive the cutter rod rotating driven gear to axially move, and the rotating driven gear synchronously drives the cutter rod to axially extend and retract.

9. The ultrasonic shears device of claim 7 or 8, wherein the shears shaft is rotatably coupled to the shears housing by a bearing. When the cutter rod rotating operation is performed, the cutter rod rotating assembly and the cutter rod telescopic assembly work synchronously.

10. The ultrasonic shears device of claim 7 or 8, wherein the shears shaft is rotatably and telescopingly mounted to the handle by a bearing assembly. The ultrasonic knife device further comprises a rotating assembly which can rotate the instrument rod and the inner rod, and the rotating assembly comprises a rotating driving gear and a rotating driven gear engaged with the rotating driving gear.

11. The ultrasonic shears device of claim 10, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The rotating driven gear is a hollow structure, one end of the instrument rod is inserted into the hollow structure of the rotating driven gear, the rotating driven gear is provided with rotating driven gear holes arranged in pairs along the circumference, the instrument rod is provided with instrument rod holes arranged in pairs along the circumference, and the inner rod is provided with inner rod waist holes at corresponding positions.

12. The ultrasonic shears device of claim 11, wherein the shears device is configured to be rotated about the longitudinal axis of the shears device. The connecting pins are two, the driven gear holes and the instrument rod holes are two groups respectively, each group comprises two holes, the two driven gear holes of each group are arranged correspondingly, the two instrument rod holes of each group are arranged correspondingly, the inner rod waist holes comprise two, and each connecting pin respectively passes through a group of driven gear holes, a group of instrument rod holes and an inner rod waist hole.

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