Cordless ultrasonic scalpel with transducer arranged in scalpel head and scalpel head assembling method of cordless ultrasonic scalpel

Abstract

The invention discloses a cordless ultrasonic scalpel with a transducer arranged in a scalpel head and a scalpel head assembling method thereof.The ultrasonic scalpel comprises a handle, the scalpel head, the transducer and an energy generator, a power source is arranged in the handle, the energy generator is installed at the top of the handle, the power source is electrically connected with the energy generator, and the transducer is electrically connected with the energy generator. The energy generator is electrically connected with the energy converter; the transducer is provided with an electric connection part and a tool bit connection part, the tool bit connection part comprises an insertion cavity arranged at the end part of the transducer, and threads are arranged in the insertion cavity, so that the transducer is in threaded connection with the tool bit. According to the wireless ultrasonic knife, the transducer and the knife head are combined to form the disposable knife head with the built-in transducer, the sterilization service life of an energy generator of the wireless ultrasonic knife is longer, the performance cannot be reduced after sterilization, the knife head and the piezoelectric transducer are disposable, the reliability and safety of equipment can be greatly guaranteed, and the knife head is convenient and rapid to assemble.

Description

Technical Field

[0001] The invention relates to a minimally invasive instrument, and in particular to a cordless ultrasonic scalpel with a built-in transducer in the scalpel head and a scalpel head assembly method thereof. Background Art

[0002] In the field of minimally invasive surgery, ultrasonic scalpels are widely used. Compared with other minimally invasive surgical instruments such as high-frequency electric scalpels, their advantages are less smoke production, clear surgical field of view, less thermal damage, and the functions of tissue cutting, coagulation and separation, and the cutting and coagulation range can be precisely controlled.

[0003] The ultrasonic scalpel can be used for laparoscopic and endoscopic surgery, as well as open surgery. It can be coordinated with other surgical instruments, such as traditional mechanical scalpels and electric scalpels, or it can be used alone. Because it integrates multiple functions such as grasping, shearing, cutting, stripping, and hemostasis, different surgeries require a suitable tool length to reach the surgical site and a handle and tool combination that is easy to operate.

[0004] Currently, existing ultrasonic scalpel energy generators on the market generally need to be sterilized repeatedly, while the blade head is disposable. The piezoelectric transducer inside the energy generator is a component that is very sensitive to temperature and usage time. After multiple sterilizations and long-term use, the output performance of the piezoelectric transducer will decrease.

[0005] Considering that the piezoelectric transducer is not an expensive component and its composition structure is simple and the manufacturing cost is low, it is considered to combine the piezoelectric transducer of the cordless ultrasonic knife with a disposable blade head, so that the sterilization life of the energy generator of the cordless ultrasonic knife is longer and the performance will not decrease after sterilization. The blade head and piezoelectric transducer are disposable, which can greatly ensure the reliability and safety of the equipment. Summary of the invention

[0006] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a cordless ultrasonic scalpel with a built-in transducer in the scalpel head and a scalpel head assembly method thereof.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a cordless ultrasonic knife with a built-in transducer in the blade head, comprising a handle, a blade head, a transducer and an energy generator, wherein the handle has a built-in power supply, and the energy generator is installed on the top of the handle, wherein the power supply is electrically connected to the energy generator, and the energy generator is electrically connected to the transducer;

[0008] The transducer is provided with an electrical connection portion and a tool head connection portion, wherein the tool head connection portion comprises an insertion cavity provided at the end of the transducer, wherein the insertion cavity is provided with a thread, so that the transducer and the tool head are threadedly connected;

[0009] The electrical connection part includes an electrical connection plate, a housing and a mounting pad, wherein the electrical connection plate is a cylindrical disc, and a center hole arranged in the axial direction is arranged at the center of the electrical connection plate, and the mounting pad is fixedly mounted on the outer wall of the transducer, and the electrical connection plate is sleeved in the mounting pad so that the electrical connection plate can rotate freely around the mounting pad;

[0010] Conductive traces are respectively provided on the two side surfaces of the electrical connection plate, and the conductive traces are respectively connected to the positive and negative electrodes of the transducer through wires. Wave springs are also respectively provided on both sides of the electrical connection plate, and the wave springs are compressed by a detachable pressure ring and an outer shell, so that the two wave springs are respectively coupled with the conductive traces on the two side surfaces of the electrical connection plate, and the wave springs located on both sides of the electrical connection plate are respectively connected to the energy generator.

[0011] Optionally, the housing comprises a hollow cylindrical shell, one end of the shell is provided with a flange, and the other end of the shell is provided with an elastic retaining ring, the retaining ring is adapted to the pressure ring so that the pressure ring squeezes the wave spring.

[0012] Optionally, one end of the mounting pad extends toward the inside of the housing, so that the electrical connection plate cooperates with the mounting pad inside the housing;

[0013] A hook is provided at one end of the mounting pad in the shell, and the hook is adapted to the electric connection plate, so that the electric connection plate is positioned inside the shell through the hook and the wave spring.

[0014] Optionally, the other side of the mounting pad extends toward the distal end of the transducer and is fixedly connected to the distal end of the transducer;

[0015] The mounting pad is made of elastic material and includes a first part and a second part, wherein the first part extends to the interior of the shell, and the second part extends to the far end of the transducer, and the first part fits the transducer, and there is a gap between the second part and the transducer.

[0016] Optionally, the handle is provided with an energy adjustment button and an operating wrench.

[0017] By adopting the above technical scheme, the cordless ultrasonic scalpel of the present invention combines the transducer with the blade head to form a disposable blade head with a built-in transducer, so that the sterilization life of the energy generator of the cordless ultrasonic scalpel is longer and the performance will not decrease after sterilization. The blade head and piezoelectric transducer are disposable, which can greatly ensure the reliability and safety of the equipment.

[0018] According to the above-mentioned cordless ultrasonic scalpel with a transducer built into the scalpel head, the present invention also provides a scalpel head assembly method for the cordless ultrasonic scalpel, which comprises the following steps:

[0019] S1, assembling electrical connection parts;

[0020] S2, spot welding the wires connecting the positive and negative electrodes of the transducer to the conductive traces on both sides of the electrical connection board;

[0021] S3, inserting the electrical connection part into the transducer so that the distal end of the electrical connection part is fixedly matched with the distal end of the transducer;

[0022] S4. Thread the cutter head into the insertion cavity of the transducer.

[0023] Optionally, in step S1, the step of assembling the electrical connection part is:

[0024] S 11 , putting the outer shell into the mounting pad, and pulling the outer shell to slide along the mounting pad until the distal end of the outer shell abuts against the distal end of the mounting pad;

[0025] S 12 , slidingly inserting the first wave spring from the proximal end of the mounting pad until the first wave spring abuts against the distal end of the housing;

[0026] S 13 , inserting the electrical connection plate into the mounting pad, and then pulling the housing to slide toward the proximal end of the mounting pad until the first wave spring is compressed against the electrical connection plate, positioning the electrical connection plate at the proximal end of the mounting pad, and coupling the first wave spring with the conductive trace of the electrical connection plate;

[0027] S 14 , inserting the second wave spring from the proximal end of the mounting pad so that the second wave spring abuts against the electrical connection plate;

[0028] S 15 , inserting the pressure ring into the housing so that the second wave spring is compressed against the electrical connection board and the second wave spring is coupled with the conductive trace of the electrical connection board.

[0029] By adopting the above technical solution, the blade head assembly method of the present invention can quickly combine the transducer and the blade head together to form a disposable blade head with a built-in transducer, thereby improving the assembly efficiency of the cordless ultrasonic knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the cutter head of the present invention;

[0032] Figure 3 is a cross-sectional view of a cutter head of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the cutter head of the present invention when it is not installed in the housing. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] like Figure 1 As shown, the present invention discloses a cordless ultrasonic knife with a built-in transducer in a blade head, comprising a handle 100, a blade head 200, a transducer 300 and an energy generator 400, wherein the handle 100 has a built-in power supply 500, and the handle 100 is also provided with an energy adjustment button 600 and an operating wrench 700. The energy generator 400 is installed on the top of the handle 100, and is used to convert the electric energy of the power supply 500 into an electric signal matching the transducer 300, wherein the power supply 500 is electrically connected to the energy generator 400, and the energy generator 400 is electrically connected to the transducer 300, after the energy generator 400 converts the DC signal of the power supply 500 into an AC signal, the AC signal is transmitted to the transducer 300, and the transducer 300 converts the AC signal into an ultrasonic wave and transmits it to the blade head 200. The energy adjustment button 600 can switch the output gear of the transducer 300, and the operating wrench 700 can control the state of the end edge of the blade head 200.

[0037] In most cases, the energy generator 400 and the transducer 300 are of an integrated structure, but in the present invention, the transducer 300 and the energy generator 400 are of a separate structure, so that the transducer 300 and the cutter head 200 can be combined together. When reused, there is no need to sterilize the transducer 300, but the transducer 300 and the cutter head 200 can be directly replaced together. When performing a sterilization operation, only the energy generator 400 needs to be sterilized, thereby ensuring the reliability and safety of the equipment.

[0038] Specifically, in the present invention, the transducer 300 is provided with an electrical connection part and a cutter head connection part, the electrical connection part is used to receive an electrical signal from the energy generator 400, and transmit the electrical signal to the electrode sheet 310 of the transducer 300, and the electrode sheet 310 generates ultrasonic vibration after receiving the signal. The cutter head connection part is used to connect the cutter head 200 of the ultrasonic scalpel, and the cutter head connection part includes an insertion cavity 320 provided at the end of the transducer, and the insertion cavity 320 is internally provided with a thread, so that the transducer 300 and the cutter head 200 are threadedly connected, so as to facilitate the quick installation of the cutter head 200.

[0039] The electrical connection part is installed in the middle of the transducer 300, and the electrical connection part includes an electrical connection plate 330, a housing 340 and a mounting pad 350. The electrical connection plate 330 is a cylindrical disc, and a center hole arranged along the axial direction is provided at the center thereof, and the center hole is adapted to the mounting pad 350, so as to facilitate the electrical connection plate 330 to be installed in the mounting pad 350. The mounting pad 350 is fixedly installed on the outer wall of the transducer 300, and the electrical connection plate 330 is sleeved in the mounting pad 350 through the center hole, and the electrical connection plate 330 can also rotate freely around the mounting pad 350 after being installed on the mounting pad 350.

[0040] Conductive traces are also provided on both sides of the electrical connection plate 330, and the conductive traces are connected to the positive and negative electrodes of the transducer 300 through the wires 311, and coupling points are provided on the conductive traces, and the wires 311 are coupled to the coupling points, thereby achieving power supply. Wave springs are also provided on both sides of the electrical connection plate 330, and the wave springs are compressed by the detachable pressure ring 360 and the housing 340, so that the two wave springs are respectively coupled to the conductive traces on the surfaces of the two sides of the electrical connection plate 330, and the wave springs located on both sides of the electrical connection plate 330 are also respectively connected to the energy generator 400. In order to distinguish the two wave springs, the two wave springs are named as the first wave spring 331 and the second wave spring 332, wherein the first wave spring 331 is provided at the proximal end of the electrical connection plate 330, and the second wave spring 332 is provided at the distal end of the electrical connection plate 330.

[0041] The housing 340 includes a hollow cylindrical housing, one end of which is provided with a flange 341, and the other end of which is provided with an elastic retaining ring 342, which is adapted to the pressing ring 360 so that the pressing ring 360 compresses the first wave spring 331, and the first wave spring 331 is coupled with the conductive trace at the proximal end of the electrical connection plate 330 after the pressing ring 360 is compressed. The retaining ring 342 is configured to allow the pressing ring 360 to snap into the housing 340 from the proximal end of the housing 340, so that the housing 340 and the pressing ring 360 cooperate to hold the first wave spring 331 between the electrical connection plate 330 and the pressing ring 360. The second wave spring 332 is provided between the flange 341 and the electrical connection plate 330. When the electrical connection board 330 is positioned on the mounting pad 350 , the second wave spring 332 is compressed between the flange 341 and the electrical connection board 330 , and the second wave spring 332 is coupled to the conductive trace at the distal end of the electrical connection board 330 .

[0042] The mounting pad 350 is an elastic tubular object made of elastic material, which has an elastic effect and can suppress vibration from the transducer 300. One end of the mounting pad 350 extends toward the inside of the housing, and a hook 351 is formed at the end inside the housing. The hook 351 is adapted to the electrical connection plate 330, so that the electrical connection plate 330 is positioned in the housing in cooperation with the mounting pad 350. The other side of the mounting pad 350 extends toward the distal end of the transducer 300 and is fixedly connected to the distal end of the transducer 300.

[0043] In the present invention, the mounting pad 350 is divided into a first part 352 and a second part 353 according to the size of the gap between the mounting pad 350 and the transducer 300, wherein the first part 352 extends to the inside of the housing, the second part 353 extends to the distal end of the transducer 300, and the second part 353 is fixed to the distal end of the transducer 300 via a flange. The first part 352 fits the transducer 300, and there is a gap between the second part 353 and the transducer 300. Through this arrangement, the vibration transmitted from the transducer 300 to the handle 100 can be effectively reduced.

[0044] It should be pointed out that the proximal end mentioned in the present invention refers to the end close to the operator, and the distal end refers to the end relative to the proximal end, that is, the end far away from the operator.

[0045] When assembling the transducer 300 and the cutter head 200, the present invention performs the assembly according to the following steps, so that the cutter head 200 and the transducer 300 can be assembled quickly:

[0046] S1, assembling electrical connection parts;

[0047] S2, spot-welding the wire 311 connecting the positive and negative electrodes of the transducer 300 to the conductive traces on both sides of the electrical connection board 330;

[0048] S3, inserting the electrical connection part into the transducer 300, so that the distal end of the electrical connection part is fixedly matched with the end of the transducer 300;

[0049] S4. Threading the cutter head 200 to the insertion cavity 320 of the transducer 300.

[0050] Among them, in step S1, the step of assembling the electrical connection part is:

[0051] S 11 , inserting the housing 340 into the mounting pad 350, and pulling the housing 340 to slide along the mounting pad 350 until the distal end of the housing 340 abuts against the distal end of the mounting pad 350;

[0052] S 12 , slidingly inserting the second wave spring 332 from the proximal end of the mounting pad 350 until the second wave spring 332 abuts against the distal end of the housing 340;

[0053] S 13 , insert the electrical connection board 330 into the mounting pad 350, then pull the housing 340 to slide toward the proximal end of the mounting pad 350 until the second wave spring 332 is compressed against the distal end of the electrical connection board 330, so that the electrical connection board 330 is positioned at the proximal end of the mounting pad 350 under the cooperation of the hook 351 and the flange 341, and at the same time, the second wave spring 332 is coupled with the conductive trace of the electrical connection board 330 after being compressed;

[0054] S 14 , inserting the first wave spring 331 from the proximal end of the mounting pad so that the first wave spring 331 abuts against the electrical connection plate 330;

[0055] S 15 , insert the pressing ring 360 into the housing 340 , and lock the pressing ring 360 in the housing 340 through the action of the retaining ring 342 , and compress the first wave spring 331 to abut against the electrical connection plate 330 , and at the same time, the first wave spring 331 is coupled with the conductive trace of the electrical connection plate 330 .

[0056] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0057] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A cordless ultrasonic scalpel with a built-in transducer in the scalpel head, characterized in that: The invention comprises a handle, a blade, a transducer and an energy generator, wherein the handle has a built-in power supply, and the energy generator is installed on the top of the handle, wherein the power supply is electrically connected to the energy generator, and the energy generator is electrically connected to the transducer; The transducer is provided with an electrical connection portion and a tool head connection portion, wherein the tool head connection portion comprises an insertion cavity provided at the end of the transducer, wherein the insertion cavity is provided with a thread, so that the transducer and the tool head are threadedly connected; The electrical connection part includes an electrical connection plate, a housing and a mounting pad, wherein the electrical connection plate is a cylindrical disc, and a center hole arranged in the axial direction is arranged at the center of the electrical connection plate, and the mounting pad is fixedly mounted on the outer wall of the transducer, and the electrical connection plate is sleeved in the mounting pad so that the electrical connection plate can rotate freely around the mounting pad; Conductive traces are respectively provided on the two side surfaces of the electrical connection plate, and the conductive traces are respectively connected to the positive and negative electrodes of the transducer through wires. Wave springs are also respectively provided on both sides of the electrical connection plate, and the wave springs are compressed by a detachable pressure ring and an outer shell, so that the two wave springs are respectively coupled with the conductive traces on the two side surfaces of the electrical connection plate, and the wave springs located on both sides of the electrical connection plate are respectively connected to the energy generator.

2. The cordless ultrasonic scalpel with a built-in transducer in the scalpel head according to claim 1, characterized in that: The housing comprises a hollow cylindrical shell, one end of which is provided with a flange, and the other end of which is provided with an elastic retaining ring, wherein the retaining ring is matched with a pressing ring so that the pressing ring presses the wave spring.

3. The cordless ultrasonic scalpel with a built-in transducer in the scalpel head according to claim 2, characterized in that: One end of the mounting pad extends toward the interior of the housing so that the electrical connection plate cooperates with the mounting pad inside the housing; A hook is provided at one end of the mounting pad in the shell, and the hook is adapted to the electric connection plate, so that the electric connection plate is positioned inside the shell through the hook and the wave spring.

4. The cordless ultrasonic scalpel with a built-in transducer in the scalpel head according to claim 3, characterized in that: The other side of the mounting pad extends toward the distal end of the transducer and is fixedly connected to the distal end of the transducer; The mounting pad is made of elastic material and includes a first part and a second part, wherein the first part extends to the interior of the shell, and the second part extends to the far end of the transducer, and the first part fits the transducer, and there is a gap between the second part and the transducer.

5. The cordless ultrasonic scalpel with a built-in transducer in the scalpel head according to claim 4, characterized in that: The handle is provided with an energy adjustment button and an operating wrench.

6. A method for assembling a cordless ultrasonic knife head, characterized in that: The following steps are included: S1, assembling electrical connection parts; S2, spot welding the wires connecting the positive and negative electrodes of the transducer to the conductive traces on both sides of the electrical connection board; S3, inserting the electrical connection part into the transducer so that the distal end of the electrical connection part is fixedly matched with the distal end of the transducer; S4, threading the cutter head to the insertion cavity of the transducer; The cordless ultrasonic knife comprises a handle, a blade, a transducer and an energy generator, wherein the handle has a built-in power supply, and the energy generator is installed on the top of the handle, wherein the power supply is electrically connected to the energy generator, and the energy generator is electrically connected to the transducer; The transducer is provided with an electrical connection portion and a tool head connection portion, wherein the tool head connection portion comprises an insertion cavity provided at the end of the transducer, wherein the insertion cavity is provided with a thread, so that the transducer and the tool head are threadedly connected; The electrical connection part includes an electrical connection plate, a housing and a mounting pad, wherein the electrical connection plate is a cylindrical disc, and a center hole arranged in the axial direction is arranged at the center of the electrical connection plate, and the mounting pad is fixedly mounted on the outer wall of the transducer, and the electrical connection plate is sleeved in the mounting pad so that the electrical connection plate can rotate freely around the mounting pad; Conductive traces are respectively provided on the two side surfaces of the electrical connection plate, and the conductive traces are respectively connected to the positive and negative electrodes of the transducer through wires. Wave springs are also respectively provided on both sides of the electrical connection plate, and the wave springs are compressed by a detachable pressure ring and an outer shell, so that the two wave springs are respectively coupled with the conductive traces on the two side surfaces of the electrical connection plate, and the wave springs located on both sides of the electrical connection plate are respectively connected to the energy generator.

7. The method for assembling a cordless ultrasonic scalpel head according to claim 6, characterized in that: In step S1, the steps of assembling the electrical connection part are: S 11 , putting the housing into the mounting pad, and pulling the housing to slide along the mounting pad until the distal end of the housing abuts against the distal end of the mounting pad; S 12 , slidingly inserting the first wave spring from the proximal end of the mounting pad until the first wave spring abuts against the distal end of the housing; S 13 , inserting the electrical connection plate into the mounting pad, and then pulling the housing to slide toward the proximal end of the mounting pad until the first wave spring is compressed against the electrical connection plate, positioning the electrical connection plate at the proximal end of the mounting pad, and coupling the first wave spring with the conductive trace of the electrical connection plate; S 14 , inserting the second wave spring from the proximal end of the mounting pad so that the second wave spring abuts against the electrical connection plate; S 15 , inserting the pressure ring into the housing so that the second wave spring is compressed against the electrical connection board and the second wave spring is coupled with the conductive trace of the electrical connection board.

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