An ultrasonic surgical blade

Abstract

The embodiment of the application discloses an ultrasonic knife, which comprises a driving handle, a knife head assembly and a hollow motor; the knife head assembly comprises a knife rod and a knife head arranged at one end of the knife rod; the other end of the knife rod is provided with a cavity; an outer thread is arranged on one end of the driving handle close to the knife rod; and an inner thread matched with the outer thread is arranged in the cavity; the hollow motor is internally provided with a channel capable of allowing the knife rod to pass through; and the hollow motor can drive the knife rod to rotate in the case that the knife rod can pass through the hollow motor. Thus, the one end of the knife rod provided with the cavity passes through the hollow motor, the outer thread of the driving handle is in contact with the inner thread in the cavity, then the hollow motor is started to drive the knife rod to rotate, the knife rod is threadedly connected with the driving handle, so that the operator does not need to manually rotate the knife rod, time and labor are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to an ultrasonic knife. BACKGROUND

[0002] The ultrasonic knife system has been widely used in clinical surgical treatment. The ultrasonic knife mainly consists of a main machine, a driving handle and a connecting line, an ultrasonic knife and a foot switch, etc. Its working principle is to activate the work by using the foot pedal or hand-held ultrasonic knife. At this time, the main machine outputs the electric energy under the resonant frequency of the vibration system to the driving handle, which converts the electric energy into mechanical energy and outputs it to the knife head. The knife head further amplifies the vibration to make the water in the tissue cells vaporize, the protein hydrogen bond break, the cells disintegrate, and the tissue be cut or coagulated, so as to achieve the purpose of cutting tissue and stopping bleeding.

[0003] The ultrasonic knife includes a driving handle and a knife head assembly, and the driving handle and the knife head assembly are generally detachably connected to facilitate taking and storing. However, the existing knife body and knife head assembly need to be manually assembled by the operator, which is time-consuming and laborious. SUMMARY

[0004] The ultrasonic knife provided by the embodiments of the present application solves the problem that the existing knife body and knife head assembly need to be manually assembled by the operator, which is time-consuming and laborious.

[0005] The ultrasonic knife provided by the embodiments of the present application solves the problem that the existing knife body and knife head assembly need to be manually assembled by the operator, which is time-consuming and laborious.

[0006] The knife head assembly includes a knife rod and a knife head arranged at one end of the knife rod, the other end of the knife rod is provided with a cavity, one end of the driving handle close to the knife rod is provided with an external thread, and the cavity is provided with an internal thread matched with the external thread.

[0007] The inside of the hollow motor is provided with a channel capable of allowing the knife rod to pass through. In the case that the knife rod can pass through the hollow motor, the hollow motor can drive the knife rod to rotate.

[0008] Specifically, a part of the knife rod close to the knife head is further provided with a camera assembly, the camera assembly includes a camera part, a driving part and a transmission part, the camera part is connected with the driving part through the transmission part, and the driving part drives the camera part to rotate around the knife rod through the transmission part.

[0009] Specifically, the transmission part includes a rotating sleeve arranged outside the knife rod, the rotating sleeve is provided with a driving gear and a driven gear inside, the driven gear is sleeved outside the knife rod, the driving part is mounted on the rotating sleeve, and the driving part is connected with the driving gear; and the camera part is arranged on the outer wall of the rotating sleeve.

[0010] Specifically, the camera part is detachably connected with the rotating sleeve.

[0011] Specifically, the camera part comprises a first bolt, a camera and a clamp set outside the camera, the clamp is provided with a first screw hole matched with the bolt, and the rotating sleeve is provided with a second screw hole matched with the bolt.

[0012] Specifically, the number of the second screw holes is at least two, and the at least two second screw holes are sequentially arranged from top to bottom along the axial direction of the rotating sleeve.

[0013] Specifically, the rotating sleeve comprises a first cover, a second cover and a peripheral wall, and the peripheral wall is detachably connected with the first cover and the second cover.

[0014] Specifically, the ultrasonic knife further comprises a second bolt and a third bolt, one end surface of the peripheral wall is provided with a third screw hole matched with the second bolt, the other end surface of the peripheral wall is provided with a fourth screw hole matched with the third bolt, the first cover is provided with a fifth screw hole matched with the third bolt, and the second cover is provided with a sixth screw hole matched with the third bolt, the third screw hole is connected with the fifth screw hole through the second bolt, and the fourth screw hole is connected with the sixth screw hole through the third bolt.

[0015] Specifically, the driving handle and the knife rod are provided with conductive ends.

[0016] When the driving handle and the knife rod are connected, the conductive end of the driving handle is in contact with the conductive end in the knife rod, so that the electric energy of the driving handle is transmitted to the hollow motor through the knife rod to supply power for the hollow motor.

[0017] Specifically, the ultrasonic knife further comprises a motor power line connected with the hollow motor.

[0018] According to the ultrasonic knife provided by the embodiment of the application, one end of the cavity of the knife rod penetrates the hollow motor, the outer thread of the driving handle is in contact with the inner thread in the cavity, then the hollow motor is started to drive the knife rod to rotate, and the knife rod is threadedly connected with the driving handle, so that the operator does not need to manually rotate the knife rod, time and labor are saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following drawings of the application are used herein as a part of the embodiments of the application for understanding the application. The drawings of the embodiments of the application and the description thereof are used to explain the principles of the application.

[0020] In the drawings:

[0021] Figure 1A perspective view of an ultrasonic knife according to an alternative embodiment of the present application;

[0022] Figure 2 A perspective view of an ultrasonic knife according to an alternative embodiment of the present application; Figure 1 A partial sectional view of an ultrasonic knife according to an alternative embodiment of the present application;

[0023] Figure 3 A perspective view of an ultrasonic knife according to an alternative embodiment of the present application; Figure 2 An exploded view of an ultrasonic knife according to an alternative embodiment of the present application;

[0024] Figure 4 A perspective view of an ultrasonic knife according to an alternative embodiment of the present application; Figure 2 A perspective view of an ultrasonic knife according to an alternative embodiment of the present application;

[0025] Figure 5 A partial enlarged view of an ultrasonic knife according to an alternative embodiment of the present application; Figure 1

[0026] A structural view of a camera assembly according to an alternative embodiment of the present application; Figure 6

[0027] An exploded view of a camera assembly according to an alternative embodiment of the present application. Figure 7 Figure 5 Wherein, 1 - knife head assembly, 101 - knife rod, 102 - knife head, 2 - camera assembly, 201 - driving part, 202 - transmission part, 2021 - static gear, 2022 - dynamic gear, 2023 - rotating sleeve, 20231 - first cover, 20232 - peripheral wall, 20233 - second cover, 2024 - second threaded hole, 2025 - first bolt, 203 - camera part, 2031 - camera, 2032 - hoop, 3 - shell, 4 - hollow motor, 5 - switch, 6 - driving handle power line, 7 - motor power line, 8 - driving handle, 9 - wire and video transmission line, 10 - wire and video transmission line sleeve. DETAILED DESCRIPTION

[0028] In the following description, numerous specific details are given to provide a thorough understanding of the application. However, it will be apparent that the application can be practiced without one or more of the specific details. In other instances, well-known

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. ​

[0031] Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] As shown in FIGS. 1-3, the present embodiment provides an ultrasonic knife, which comprises a driving handle 8, a knife head assembly 1, and a hollow motor 4. The knife head assembly 1 comprises a knife rod 101 and a knife head 102 arranged at one end of the knife rod 101. The other end of the knife rod 101 is provided with a cavity. The end of the driving handle 8 close to the knife rod 101 is provided with an external thread. The cavity is provided with an internal thread matched with the external thread. The hollow motor 4 is internally provided with a channel through which the knife rod 101 can pass. In the case that the knife rod 101 can pass through the hollow motor 4, the hollow motor 4 can drive the knife rod 101 to rotate. Figure 1 Figure 2 Figure 3 Figure 4 As shown in FIGS. 1-3, the present embodiment provides an ultrasonic knife, which comprises a driving handle 8, a knife head assembly 1, and a hollow motor 4. The knife head assembly 1 comprises a knife rod 101 and a knife head 102 arranged at one end of the knife rod 101. The other end of the knife rod 101 is provided with a cavity. The end of the driving handle 8 close to the knife rod 101 is provided with an external thread. The cavity is provided with an internal thread matched with the external thread. The hollow motor 4 is internally provided with a channel through which the knife rod 101 can pass. In the case that the knife rod 101 can pass through the hollow motor 4, the hollow motor 4 can drive the knife rod 101 to rotate.

[0033] In a specific application, the ultrasonic knife further comprises a housing 3. The end of the driving handle 8 provided with the external thread extends into the housing 3. The driving handle 8 is further provided with a driving handle power line 6 connected with a main machine to provide working voltage for the driving handle 8. The housing 3 is further provided with a switch 5 to control the opening and closing of the hollow motor 4. Specifically, when the operator moves the switch 5 to one side, the hollow motor 4 rotates in a first direction. When the operator moves the switch 5 to the other side, the hollow motor 4 rotates in a second direction (the first direction is opposite to the second direction). When the switch 5 is in the middle position, the hollow motor 4 stops rotating.

[0034] The overall shape of the hollow motor 4 can adopt a cylindrical structure, a cuboid structure, etc. The present embodiment is not strictly limited. The hollow motor 4 can be arranged in the housing 3 or directly sleeved on the knife rod 101.

[0035] ​​​In the installation of the blade rod 101, if the hollow motor 4 is installed on the shell 3, the operator first sets the one end of the cavity of the blade rod 101 through the passage of the hollow motor 4, and makes the external thread on the driving handle 8 contact with the internal thread in the cavity, then opens the hollow motor 4 by turning the switch 5 to one side, drives the blade rod 101 to rotate through the hollow motor 4, and makes the blade rod 101 threadedly connected with the driving rod, so as to realize the assembly of the blade rod 101 and the driving rod. If the hollow motor 4 is directly sleeved on the blade rod 101, the operator directly makes the internal thread in the cavity of the blade rod 101 contact with the external thread of the driving handle, then opens the hollow motor 4 by turning the switch 5, drives the blade rod 101 to rotate through the hollow motor 4, and makes the blade rod 101 threadedly connected with the driving rod, so as to realize the assembly of the blade rod 101 and the driving rod. In the disassembly of the blade rod 101, the operator opens the hollow motor 4 by turning the switch 5 to the other side, drives the blade rod 101 to rotate through the hollow motor 4, and unscrews the blade rod 101 from the driving rod, and then the blade rod 101 can be dismounted. Thus, the rotation of the blade rod 101 driven by the hollow motor 4 can realize the assembly and disassembly of the blade rod 101, so as to facilitate the operator to assemble the blade rod 101 and the driving rod.

[0036] It can be understood that the operator can determine the rotation direction of the hollow motor 4 according to the spiral direction of the internal thread and the external thread and the operation of the blade rod 101, so as to determine the turning direction of the switch 5.

[0037] In the prior art, when the ultrasonic knife is used, before the operator clamps the biological tissue such as blood vessels through the blade head 102, it is often necessary to adjust the angle of the blade head 102 to meet the smooth clamping of the biological tissue. The manual rotation of the ultrasonic knife by the operator can cause the operator's force and rotation angle to be unable to be accurately controlled due to hand fatigue and other factors, so that the precision of the operation is not high. In the embodiment, before the ultrasonic knife is used, the operator can open the hollow motor 4 by turning the switch 5 according to the position of the biological tissue, so as to drive the blade rod 101 to rotate to smoothly clamp the biological tissue. In this way, the operator does not need to manually rotate the blade head 102, which not only facilitates the operation of the operator, but also controls the rotation angle and force more accurately. The rotation direction of the hollow motor 4 can be determined by the rotation direction of the blade head 102, so the direction of the operator turning the switch 5 can also be determined.

[0038] The ultrasonic knife provided in the embodiment sets the one end of the cavity of the blade rod 101 through the hollow motor 4, makes the external thread of the driving handle 8 contact with the internal thread in the cavity, and then starts the hollow motor 4 to drive the blade rod 101 to rotate, so as to make the blade rod 101 threadedly connected with the driving handle 8, thereby eliminating the need for the operator to manually rotate the blade rod 101, saving time and effort.

[0039] In other embodiments, such as Figure 1 and Figure 5As shown, a camera assembly 2 is also provided on the part of the tool holder 101 near the tool head 102. The camera assembly 2 includes a camera part 203, a drive part 201 and a transmission part 202. The camera part 203 is connected to the drive part 201 through the transmission part 202. The drive part 201 drives the camera part 203 to rotate around the tool holder 101 through the transmission part 202.

[0040] The drive unit 201 can be a motor, or other existing drive components; this embodiment is not strictly limited. A wire and video transmission line sleeve 10 is also provided on one side of the tool holder 101 to accommodate the wires and video transmission lines 9 connected to the drive unit 201 and the camera unit 203.

[0041] In this embodiment, a camera assembly 2 is provided on the part of the blade 101 near the blade head 102, and the drive unit 201 drives the camera unit 203 to rotate around the blade 101 through the transmission unit 202. That is, the position of the camera unit 203 can be adjusted by the transmission action between the drive unit 201 and the transmission unit 202. Thus, the operator can use the drive unit 201 and the transmission unit 202 to rotate the camera unit 203 to the position to be observed according to actual needs, so as to see the image of the position to be observed through the camera unit 203. This not only increases the shooting range of the camera unit 203, but also eliminates the need for other people to adjust the position of the endoscope, saving manpower.

[0042] It is worth noting that the camera unit 203 also rotates along with the rotation of the cutter bar 101. That is, when the position of the camera unit 203 needs to be adjusted within a small range, the operator can drive the cutter bar 101 to rotate through the hollow motor 4, thereby driving the camera unit 203 to rotate to the target position.

[0043] Specifically, such as Figure 6 and Figure 7 As shown, the transmission unit 202 includes a rotating sleeve 2023 disposed outside the tool holder 101. The rotating sleeve 2023 is provided with a moving gear 2022 and a stationary gear 2021. The stationary gear 2021 is sleeved on the outside of the tool holder 101. The drive unit 201 is mounted on the rotating sleeve 2023 and is connected to the moving gear 2022. The camera unit 203 is disposed on the outer wall of the rotating sleeve 2023.

[0044] When adjusting the position of the camera unit 203, the drive unit 201 is activated. The rotation of the drive unit 201 drives the rotation of the moving gear 2022, causing the moving gear 2022 to rotate around the outer circumference of the stationary gear 2021. This, in turn, causes the rotating sleeve 2023 to rotate relative to the stationary gear 2021, that is, the rotating sleeve 2023 to rotate relative to the tool holder 101. This allows the camera unit 203, which is mounted on the rotating sleeve 2023, to rotate around the tool holder 101, thereby adjusting the position of the camera unit 203.

[0045] Further, in order to avoid the situation that the wires connected with the driving part 201 and the camera part 203 and the video transmission line 9 are intertwined with each other, the angle of the camera part 203 rotating around the blade bar 101 is 360°, that is, the camera part 203 can only rotate one round around the blade bar 101, and after the camera part 203 rotates one round around the blade bar 101, the camera part 203 can only rotate in the opposite direction, and cannot continue to rotate in the original direction.

[0046] Further, as shown in Figure 7 , the camera part 203 is detachably connected with the rotating sleeve body 2023, so as to facilitate the operation of maintaining, disinfecting or replacing the camera part 203.

[0047] Specifically, the camera part 203 comprises a first bolt 2025, a camera 2031 and a clamp 2032 sleeved outside the camera 2031, the clamp 2032 is provided with a first screw hole matched with the bolt, and the rotating sleeve body 2023 is provided with a second screw hole 2024 matched with the bolt.

[0048] When the camera part 203 is installed, the first bolt 2025 is passed through the first screw hole and the second screw hole 2024, and then the first bolt 2025 is tightened, so that the clamp 2032 can clamp the camera 2031, and the clamp 2032 is also connected and fastened with the rotating sleeve body 2023, so as to realize the assembly of the camera part 203 and the rotating sleeve body 2023. When the camera part 203 is removed, the first bolt 2025 is unscrewed, so that the clamp 2032 can be separated from the rotating sleeve body 2023, and the camera 2031 can be removed.

[0049] Further, as shown in Figure 7 , the number of the second screw holes 2024 is at least two, and the at least two second screw holes 2024 are sequentially arranged from top to bottom along the axial direction of the rotating sleeve body 2023, so that the operator can connect the first screw hole with the second screw holes 2024 at different heights through the first bolt 2025, so as to adjust the height of the clamp 2032, and further adjust the height of the camera part 203 clamped by the clamp 2032.

[0050] In the embodiment, by adjusting the height of the camera part 203, different observation requirements in the operation can be met, and the adaptability of the ultrasonic knife is provided.

[0051] Further, as shown in Figure 7 , the rotating sleeve body 2023 comprises a first cover body 20231, a second cover body 20233 and a peripheral wall 20232, and the peripheral wall 20232 is detachably connected with the first cover body 20231 and the second cover body 20233.

[0052] By disassembling the first cover 20231 and the second cover 20233, the drive part 201 on the rotating sleeve 2023 and the drive gear 2022 in the rotating sleeve 2023 can be disassembled, and then the maintenance, disinfection or replacement of the drive part 201 and the drive gear 2022 can be facilitated.

[0053] Further, the ultrasonic knife further comprises a second bolt and a third bolt; one end surface of the peripheral wall 20232 is provided with a third threaded hole matched with the second bolt, the other end surface of the peripheral wall 20232 is provided with a fourth threaded hole matched with the third bolt, the first cover 20231 is provided with a fifth threaded hole matched with the third bolt, and the second cover 20233 is provided with a sixth threaded hole matched with the third bolt; the third threaded hole is connected with the fifth threaded hole through the second bolt, and the fourth threaded hole is connected with the sixth threaded hole through the third bolt.

[0054] It can be understood that the third threaded hole and the fourth threaded hole can be communicated, i.e. penetrating the peripheral wall 20232, or not communicated, i.e. having a certain depth, so that the second bolt and the third bolt can be inserted.

[0055] When the drive gear 2021 and the drive part 201 need to be disassembled, the second bolt and the third bolt are unscrewed, then the first cover 20231 and the second cover 20233 can be disassembled, and then the drive part 201 and the motor can be disassembled.

[0056] In the above embodiment, the hollow motor 4 can obtain electric energy in the following two ways.

[0057] The first way is that the driving handle 8 and the knife rod 101 are both provided with conductive ends; when the driving handle 8 is connected with the knife rod 101, the conductive end of the driving handle 8 contacts with the conductive end in the knife rod 101, so that the electric energy of the driving handle 8 is transmitted to the hollow motor 4 through the knife rod 101 to supply power for the hollow motor 4.

[0058] In this way, the components for separately supplying power for the hollow motor 4, such as the motor power line 7, can be omitted, so that the structure of the whole instrument is more compact, and the operation is more convenient.

[0059] The second way is that, as shown in FIG. 4, the ultrasonic knife further comprises a motor power line 7 connected with the hollow motor 4. Figure 7

[0060] This implementation manner can simplify the structure of the whole instrument and facilitate the manufacturing.

[0061] ​The present application has been described by way of the above examples, but it should be understood that the above examples are for illustrative and explanatory purposes only, and are not intended to limit the present application to the scope of the described examples. Furthermore, those skilled in the art can understand that the present application is not limited to the above examples, and that various modifications and changes can be made to the present application according to the teachings of the present application, and that these modifications and changes all fall within the scope of the present application claimed. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic scalpel, characterized in that, Includes drive handle, cutter head assembly and hollow motor; The cutter head assembly includes a cutter bar and a cutter head disposed at one end of the cutter bar. The other end of the cutter bar is provided with a cavity. The drive shank is provided with an external thread at one end near the cutter bar. The cavity is provided with an internal thread that matches the external thread. The hollow motor has a channel inside that allows the cutter bar to pass through. When the cutter bar can pass through the hollow motor, the hollow motor can drive the cutter bar to rotate. The part of the cutter bar near the cutter head is also provided with a camera assembly. The camera assembly includes a camera part, a drive part, and a transmission part. The camera part is connected to the drive part through the transmission part. The drive part drives the camera part to rotate around the cutter bar through the transmission part. The transmission unit includes a rotating sleeve disposed outside the tool holder. The rotating sleeve is provided with a moving gear and a stationary gear. The stationary gear is sleeved outside the tool holder. The driving unit is mounted on the rotating sleeve and connected to the moving gear. The camera unit is disposed on the outer wall of the rotating sleeve. The camera unit rotates around the tool holder by an angle of 360°.

2. The ultrasonic scalpel according to claim 1, characterized in that, The camera unit is detachably connected to the rotating sleeve.

3. The ultrasonic scalpel according to claim 2, characterized in that, The camera unit includes a first bolt, a camera, and a clamp sleeved on the outside of the camera. The clamp has a first screw hole adapted to the bolt, and the rotating sleeve has a second screw hole adapted to the bolt. The first screw hole is connected to the second screw hole through the first bolt.

4. The ultrasonic scalpel according to claim 3, characterized in that, The number of the second screw holes is at least two, and at least two second screw holes are arranged sequentially from top to bottom along the axial direction of the rotating sleeve.

5. The ultrasonic scalpel according to claim 1, characterized in that, The rotating sleeve includes a first cover, a second cover, and a peripheral wall, wherein the peripheral wall is detachably connected to the first cover and the second cover, respectively.

6. The ultrasonic scalpel according to claim 5, characterized in that, The ultrasonic scalpel also includes a second bolt and a third bolt; one end face of the peripheral wall is provided with a third screw hole adapted to the third bolt, the other end face of the peripheral wall is provided with a fourth screw hole adapted to the second bolt, the first cover is provided with a fifth screw hole adapted to the third bolt, and the second cover is provided with a sixth screw hole adapted to the third bolt; the third screw hole is connected to the fifth screw hole through the second bolt, and the fourth screw hole is connected to the sixth screw hole through the third bolt.

7. The ultrasonic scalpel according to claim 1, characterized in that, Both the drive handle and the tool holder are provided with conductive terminals; When the drive handle is connected to the tool holder, the conductive end of the drive handle contacts the conductive end inside the tool holder to transfer the electrical energy of the drive handle to the hollow motor through the tool holder, thereby powering the hollow motor.

8. The ultrasonic scalpel according to claim 1, characterized in that, The ultrasonic scalpel also includes a motor power cord connected to the hollow motor.

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