Knob type ultrasonic scalpel with adjustable clamping force

Abstract

The invention discloses a knob type adjustable clamping force ultrasonic scalpel which comprises an ultrasonic scalpel handle, a shell, a transmission mechanism and a clamping force adjusting device, the transmission mechanism and the clamping force adjusting device are arranged in the shell, the ultrasonic scalpel handle is hinged to the shell, the clamping force adjusting device and the ultrasonic scalpel handle are arranged in a limiting mode, and a corresponding limiting mechanism is arranged on the ultrasonic scalpel handle; the clamping force adjusting device is adjusted to a proper gear, the ultrasonic scalpel handle rotates to drive the limiting mechanism to move to the clamping force adjusting device, namely, the limiting mechanism cannot continue to rotate, the rotating angle of the ultrasonic scalpel handle is limited, then the clamping force of the forceps head of the ultrasonic scalpel is adjusted, the clamping force of the ultrasonic scalpel is adjustable, medical staff can use the ultrasonic scalpel conveniently, and the working efficiency is improved. The cutting speed of the ultrasonic scalpel in use can be increased, the operation difficulty is reduced, the operation time is shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic surgical knives, and in particular relates to a knob-type ultrasonic surgical knives with adjustable clamping force. Background Art

[0002] Ultrasonic scalpel is a surgical instrument. Its principle is mainly to input a certain electrical signal to the ultrasonic transducer. The piezoelectric material in the ultrasonic transducer converts the electrical signal into mechanical vibration and amplifies and transmits the amplitude to the tip of the ultrasonic scalpel through the waveguide rod, and uses ultrasonic vibration to cut tissues, blood vessels and other operations. The target of the ultrasonic scalpel is biological tissue. Most tissues are viscoelastic and have complex and variable components. Even the same type of tissue often exhibits different mechanical properties due to different tissue levels, which can be equivalent to the different resistances encountered by the ultrasonic scalpel. If the clamping force of the ultrasonic scalpel is too large, the risk of the ultrasonic scalpel breaking will increase. If the clamping force is too small, the cutting time will be long. Since the ultrasonic scalpel is an energy-carrying tool with continuous energy output, if the blade continues to act on biological tissue for a long time, it will cause the tissue to denature and coagulate, and in severe cases, it will cause carbonization, causing irreversible damage to the tissue, which is not conducive to the smooth progress of the operation. Therefore, it is necessary to properly control the clamping force of the ultrasonic scalpel.

[0003] In actual surgery, different blood vessels and tissues will be cut in each operation. For different objects to be cut, the cutting speed of the ultrasonic scalpel is different. However, the output amplitude of each gear of the ultrasonic scalpel is fixed in actual application. When used, there are generally only two gears: coagulation and cutting. Therefore, when it is necessary to change or increase the cutting speed for blood vessels that are more difficult to cut, the current ultrasonic scalpel cannot quickly increase the cutting speed. Theoretical studies have shown that the clamping force between the ultrasonic scalpel head and the blade core has a certain degree of influence on the cutting speed of the ultrasonic scalpel. The greater the clamping force, the faster the cutting speed. If the clamping force is too large, the blade is prone to breakage. However, if the clamping force is too small, the cutting speed is slow. Therefore, adjusting the clamping force can adjust the cutting speed.

[0004] The utility model with announcement number CN215688268U discloses an ultrasonic scalpel, the technical solution of which includes an ultrasonic scalpel handle and a cutter. A torque adjustment component is arranged at the front of the handle shell of the ultrasonic scalpel handle, and the torque adjustment component includes a knob inner ring, a knob outer ring, and an elastic component arranged between the knob inner ring and the knob outer ring and used to control the torque value between the two within a set range. When connecting the cutter to the ultrasonic scalpel handle, the connection can be made directly by rotating the knob outer ring, and at the same time, it can be ensured that the torque value between the cutter and the amplitude rod shaft of the transducer will not be too large during the connection process, causing the connecting screw to be twisted off or causing damage to the transducer and affecting the normal use performance of the transducer; its main focus is on connecting the cutter to the ultrasonic scalpel handle through the torque adjustment component, and the clamping force of the forceps head cannot be adjusted.

[0005] The utility model with announcement number CN218979107U discloses a quick-changing structure for a blade rod of an ultrasonic scalpel. The key points of its technical solution include a handle, a mounting seat is snap-fitted on one end of the handle, an adjusting knob is rotatably mounted in a mounting hole of the mounting seat, a blade rod is inserted in a through hole at the central axis position of the adjusting knob, and limiting holes are provided on the side surfaces of the blade rod and the adjusting knob, and a limiting latch rod is inserted inside the limiting hole, so that the blade rod can be flexibly and quickly disassembled and replaced. The utility model aims to solve the problem that the blade rod and the knob of the existing ultrasonic scalpel are fixedly connected by a latch rod, and the knob is rotatably mounted in the mounting opening of the handle. When the blade rod needs to be replaced, the handle needs to be disassembled, the knob needs to be taken out, and then the latch rod needs to be disassembled using an external tool before a new blade rod can be replaced. The operation is cumbersome and the practicality needs to be improved. The problem of adjusting the clamping force of the pliers head is not involved.

[0006] "The influence of clamping force on the energy-carrying characteristics of ultrasonic scalpel" (hereinafter referred to as "Document 1") and "Structural designsensitivity analysis of an ultrasonically activated scalpel to improve contact pressure distribution" (hereinafter referred to as "Document 2"), the above two documents focus on the research and analysis of the cutting effects of ultrasonic scalpels with different clamping forces on different cut tissues.

[0007] Among them, Reference 1 applies different clamping forces to fresh chicken breast, and evaluates the influence of the clamping force between the ultrasonic scalpel and soft tissue on the energy-carrying characteristics of the ultrasonic scalpel, as well as the influence of the clamping force on the coagulation effect of soft tissue by analyzing the frequency, resistance, reactance and other data of the ultrasonic scalpel. Experiments have shown that as the clamping force increases, the energy load and energy consumption of the ultrasonic scalpel increase, which is conducive to coagulation of tissue. However, excessive clamping force will cause excessive energy to be transmitted to the soft tissue, causing thermal damage. Therefore, soft tissue has an optimal clamping force. Reference 2 studies the gasket contact surface of the Johnson & Johnson scissor ultrasonic scalpel, evaluates the contact mechanics of the ultrasonic scalpel through three-dimensional finite element analysis simulation, and uses experimental-based sensitivity analysis to study the influence of structural design parameters on the clamping force. The results show that different contact surface pressure distributions have a great influence on the use effect of the ultrasonic scalpel.

[0008] Generally, the clamping force set by the manufacturer of ultrasonic surgical knives is a fixed value, and the clamping force cannot be changed for different tissues to be cut.

[0009] Therefore, in order to solve this problem, it is necessary to develop a knob-type adjustable clamping force ultrasonic scalpel to improve the cutting speed of the ultrasonic scalpel during use. Summary of the invention

[0010] The purpose of the present invention is to provide a knob-type adjustable clamping force ultrasonic scalpel to address the shortcomings of the above-mentioned prior art, so as to solve the problem that the existing ultrasonic scalpel cannot increase or decrease the clamping force of the blade tip during cutting, increase the cutting speed of the ultrasonic scalpel, and improve the surgical efficiency.

[0011] In order to solve the above technical problems, the technical solution adopted by the present invention is: A knob-type adjustable clamping force ultrasonic surgical knife comprises an ultrasonic knife handle, a shell, a transmission mechanism and a clamping force adjustment device arranged in the shell, wherein the ultrasonic knife handle is hinged to the shell, the clamping force adjustment device and the ultrasonic knife handle are limitedly arranged, and a corresponding limit mechanism is arranged on the ultrasonic knife handle; When the clamping force adjustment device is adjusted to a suitable gear, the ultrasonic scalpel handle rotates to drive the limit mechanism to operate until the clamping force adjustment device cannot continue to rotate, thereby limiting the rotation angle of the ultrasonic scalpel handle and adjusting the clamp force of the ultrasonic surgical scalpel.

[0012] The clamping force adjustment device comprises an upper knob and a force adjustment knob arranged at the lower end thereof, and the force adjustment knob is provided with rotating bosses of different heights along the circumferential direction, and the rotating bosses are arranged extending along the axial direction, and a notch slot is correspondingly provided on the ultrasonic knife handle; When the upper knob is rotated, the upper knob synchronously drives the force adjustment knob to rotate, and the rotating bosses of different heights are adjusted to be located in the notched slots, thereby limiting the rotation angle of the ultrasonic knife handle in the shell.

[0013] The upper knob is provided with a plurality of knob slots, and the knob slots are arranged in one-to-one correspondence with the rotating bosses of different heights to form different gears; A limiting convex card is provided at the position of the upper knob installation hole arranged correspondingly on the shell; When the upper knob is rotated to the first gear position, the limit convex card is inserted into the knob slot and generates vibration; To change gears, simply turn the upper knob again.

[0014] A rotating piece for rotation is inserted on the upper knob.

[0015] The upper knob and the force adjustment knob are connected by a pin and a slot.

[0016] The heights of the rotating bosses arranged circumferentially on the force adjustment knob increase sequentially.

[0017] The number of the rotating bosses is 2 to 4, and the knob slots are arranged one by one correspondingly thereto.

[0018] The clamping force adjustment device comprises a sliding switch and a sliding pin fixed at the lower end of the sliding switch, and the sliding pin is slidably inserted in a sliding groove provided in the housing, and a stepped notch is provided on the ultrasonic knife handle; During adjustment, the sliding switch is toggled, and the sliding switch slides to drive the sliding pin to slide in the sliding groove, pressing the ultrasonic knife handle until the stepped notch of the ultrasonic knife handle contacts the sliding pin, thereby limiting the rotation angle of the ultrasonic knife handle in the shell.

[0019] A sliding groove is arranged on the side of the sliding switch, and a sliding boss which is limit-engaged with the sliding groove is arranged inside the sliding groove of the upper shell of the handle on which the sliding switch is installed on the shell.

[0020] The transmission mechanism comprises a transmission member A, a transmission member B and a transmission member C which are hingedly arranged in sequence, and the transmission member A is horizontally arranged on the top of the housing and its end is connected to a reset spring; The transmission member B is arranged below the transmission member A and its lower end is hinged to the transmission member C below, while the end of the transmission member C is hinged to the ultrasonic knife handle; The ultrasonic knife handle rotates under the external force, and drives the transmission part C, the transmission part B, the transmission part A and the knife head sleeve equipped with the transmission part A to move in turn, and controls the opening and closing of the clamp head; The limiting mechanism on the ultrasonic scalpel handle interferes with the clamping force adjustment device to limit the rotation angle of the ultrasonic scalpel handle, thereby adjusting the clamping force of the ultrasonic surgical scalpel.

[0021] The beneficial effects of the present invention are: (1) The present invention discloses a knob-type adjustable clamping force ultrasonic scalpel, comprising an ultrasonic scalpel handle, a shell, a transmission mechanism and a clamping force adjustment device arranged in the shell, wherein the ultrasonic scalpel handle is hinged to the shell, the clamping force adjustment device and the ultrasonic scalpel handle are limitedly arranged, and a corresponding limit mechanism is arranged on the ultrasonic scalpel handle; by adjusting the clamping force adjustment device to a suitable gear position, the ultrasonic scalpel handle rotates to drive the limit mechanism to operate until the clamping force adjustment device cannot continue to rotate, thereby limiting the rotation angle of the ultrasonic scalpel handle, and then adjusting the clamping force of the ultrasonic scalpel head, thereby achieving adjustable clamping force of the ultrasonic scalpel, facilitating doctors to adjust ultrasonic scalpels with different clamping forces for different surgical tissues, facilitating use by medical staff, and facilitating improvement of the cutting speed of the ultrasonic scalpel during use, reducing the risk of the ultrasonic scalpel breaking during use, reducing the thermal damage caused by the ultrasonic scalpel during operation, reducing the risk of carbonization of tissues, increasing the cutting speed of the ultrasonic scalpel, shortening the operation time, and improving the operation efficiency.

[0022] (2) A knob-type clamping force adjustment device, which can adjust bosses of different heights by setting a rotary vane, an upper knob, a force adjustment knob, and a corresponding notch slot on the ultrasonic scalpel handle, so as to achieve interference between the rotating boss on the force adjustment knob and the notch slot on the ultrasonic scalpel handle, thereby limiting the rotation angle of the ultrasonic scalpel handle and adjusting the clamp force of the ultrasonic scalpel.

[0023] (3) A limit convex card is provided at the position of the upper knob mounting hole of the housing. When the upper knob is rotated to one of its gears, the limit convex card is inserted into the knob slot and generates vibration. Vibration feedback can be provided to the user through the rotary vane, so that the user can know that the upper knob has been adjusted to a fixed gear.

[0024] (4) The sliding type tightening force adjustment device includes a sliding switch and a sliding pin fixed at the lower end of the sliding switch, and the sliding pin is slidably inserted in a sliding groove provided in the shell. The sliding switch and the sliding pin can only move along the sliding groove under the limit of the shell. A stepped notch is provided on the ultrasonic knife handle, and the sliding switch can be adjusted to match the stepped notches on the ultrasonic knife handles of different heights, thereby limiting the rotation angle of the ultrasonic knife handle, thereby limiting the clamping force, and the adjustment is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of Example 1; Figure 2 is a schematic diagram of the internal structure of Example 1; Figure 3 is a schematic diagram of the upper knob installation structure of Example 1; Figure 4 is a schematic diagram of the structure of the force adjustment knob of Example 1; Figure 5It is a structural schematic diagram of the notch slot of the ultrasonic knife handle of Example 1; Figure 6 is a schematic diagram of the minimum clamping force gear in Example 1; Figure 7 is a schematic structural diagram of Example 2; Figure 8 is a schematic diagram of the internal structure of Example 2; Fig. 9 is a three-dimensional diagram of the internal structure of Example 2; Fig.10 is a schematic diagram of the sliding switch structure of Example 2; Fig.11 is a diagram showing the cooperation between the slide switch and the housing of Embodiment 2; Fig.12 It is the internal structure coordination diagram of Example 2; Fig.13 is a schematic diagram of the sliding switch of Example 2 being opened; Fig.14 is a schematic structural diagram of the sliding boss of Example 2; Fig.15 is a schematic structural diagram of the sliding card slot of Example 2; DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] The present invention provides a knob-type adjustable clamping force ultrasonic scalpel, such as Figures 1 to 15 shown.

[0028] A knob-type adjustable clamping force ultrasonic surgical knife comprises an ultrasonic knife handle 3, a shell, a transmission mechanism and a clamping force adjustment device arranged in the shell, and the ultrasonic knife handle 3 is hinged to the shell, the clamping force adjustment device and the ultrasonic knife handle are limitedly arranged, and a corresponding limiting mechanism is arranged on the ultrasonic knife handle 3; the shell comprises a handle upper shell 9 and a handle lower shell 11 which are snap-fitted.

[0029] When the clamping force adjustment device is adjusted to a suitable gear, the ultrasonic scalpel handle 3 rotates to drive the limit mechanism to operate until the clamping force adjustment device cannot continue to rotate, thereby limiting the rotation angle of the ultrasonic scalpel handle 3 and further adjusting the clamping force of the ultrasonic surgical scalpel.

[0030] For the ultrasonic scalpel, the opening and closing of the blade tip gasket is mainly driven by manually rotating the ultrasonic scalpel handle 3 to drive the transmission member C7, the transmission member B6, and the transmission member A4. The front end of the transmission member A4 drives the blade head sleeve (not shown in the figure) to control the pliers head to close; when the ultrasonic scalpel handle 3 is released, the reset spring 5 pushes the transmission member A4 to drive the blade head sleeve to control the opening of the pliers head. If the clamping force of the pliers head is to be controlled, it is only necessary to control the active travel distance of the transmission member A4. Increasing the distance can increase the clamping force of the pliers head, and shortening the distance can reduce the clamping force of the pliers head. Therefore, to control the active travel distance of the transmission member A4, it is only necessary to control the rotation angle of the ultrasonic scalpel handle 3. The larger the rotation angle of the ultrasonic scalpel handle 3, the larger the active travel distance of the transmission member A4, the greater the clamping force of the pliers head, the smaller the rotation angle of the ultrasonic scalpel handle 3, the smaller the active travel distance of the transmission member A4, and the smaller the clamping force of the pliers head.

[0031] The following is further described in conjunction with specific embodiments: Example 1 In this embodiment, the clamping force adjustment device includes an upper knob 2 and a force adjustment knob 8 arranged at its lower end, and the force adjustment knob 8 is circumferentially provided with bosses of different heights, and the bosses are arranged to extend axially, and a notch slot is correspondingly provided on the ultrasonic knife handle 3; the height of the bosses arranged circumferentially on the force adjustment knob 8 increases sequentially.

[0032] When the upper knob 2 is rotated, the upper knob 2 synchronously drives the force adjustment knob 8 to rotate, and the rotating boss 81 adjusted to different heights is located in the notch slot 31. The rotating boss 81 and the notch slot 31 are mutually engaged and interfered, thereby limiting the rotation angle of the ultrasonic knife handle 3 in the housing. To facilitate rotation, a rotating blade 1 for rotation is also inserted on the upper knob 2.

[0033] A plurality of knob slots 21 are provided on the upper knob 2, and the knob slots 21 are arranged in one-to-one correspondence with rotating bosses 81 of different heights to form different gears; preferably, 2 to 4 rotating bosses 81 are provided, and the knob slots 21 are arranged in one-to-one correspondence thereto. In the present embodiment, 4 rotating bosses 81 are provided, and 4 knob slots 21 are also correspondingly provided; and a limiting convex card 91 is provided at the position of the upper knob mounting hole arranged correspondingly on the shell; when the upper knob 2 is rotated to one of its gears, the limiting convex card 91 is inserted into the knob slot 21 and generates vibration; the user is given vibration feedback through the rotary vane 1 to remind the user that the upper knob 2 has been adjusted to a fixed gear; when changing the gear, it is only necessary to apply force to the rotary vane 1 to rotate the upper knob 2 again.

[0034] For easy installation, the upper knob 2 and the force adjustment knob 8 are connected by a pin and a slot. Figure 4As shown, the lower end of the upper knob 2 has a long pin structure, and the upper end of the force adjustment knob 8 has a pin groove, and the upper knob 2 is connected to the force adjustment knob 8 through the pin and the groove; the force adjustment knob 8 has four bosses of different lengths, and when the ultrasonic knife handle 3 is pressed, the notch slot of the ultrasonic knife handle 3 and the rotating boss 81 on the force adjustment knob 8 are engaged and interfered with each other, and the rotating boss 81 on the force adjustment knob 8 limits the rotation angle of the ultrasonic knife handle 3; the lower the rotating boss 81, the larger the rotatable angle of the ultrasonic knife handle 3, and the greater the clamping force of the ultrasonic surgical knife, and vice versa.

[0035] The transmission mechanism includes a transmission member A4, a transmission member B6 and a transmission member C7 which are hingedly arranged in sequence, and the transmission member A4 is horizontally arranged on the top of the shell and its end is connected to the reset spring 5; the transmission member B6 is arranged below the transmission member A4 and its lower end is hinged to the transmission member C7 below, and the end of the transmission member C7 is hinged to the ultrasonic knife handle 3; The ultrasonic scalpel handle 3 rotates under the grip of external force, and drives the transmission part C7, the transmission part B6, the transmission part A4 and the blade sleeve equipped with the transmission part A4 to move in turn, controlling the opening and closing of the forceps head; the rotating boss 81 on the force adjustment knob 8 interferes with the notch slot on the ultrasonic scalpel handle 3, limiting the rotation angle of the ultrasonic scalpel handle 3, and then adjusting the clamping force of the ultrasonic surgical scalpel.

[0036] Keep the ultrasonic scalpel handle 3 of the ultrasonic surgical scalpel in a pressure-free state, first insert the rotary blade 1 into the upper knob 2, turn the rotary blade 1 to drive the upper knob 2 and the force adjustment knob 8 to rotate, and when the rotary blade 1 is turned to a suitable gear, the knob slot 21 of the upper knob and the limit convex card 91 of the ultrasonic scalpel handle 3 are engaged, and at the same time, the rotary blade 1 has a certain vibration feedback to the user, reminding the user that a fixed gear has been switched. At this time, the rotating boss 81 of the force adjustment knob 8 has been adjusted to the position of the notch slot 31 facing the ultrasonic scalpel handle 3.

[0037] After completing the above steps, the user presses the ultrasonic knife handle 3 to the maximum rotation angle. Figure 6 As shown, at this time, the long boss of the force adjustment knob 8 is aligned with the handle slot 31, limiting the further inward rotation of the handle slot 31, while limiting the tendency of the transmission member A4 to move to the right, and also limiting the clamping force of the knife tip from further increasing.

[0038] Similarly, when the short boss of the force adjustment knob 8 is aligned with the handle slot 31, the user presses the ultrasonic knife handle 3 to a maximum rotation angle that is greater than the maximum rotation angle of the aforementioned medium and long boss aligned with the handle slot 31. At the same time, the transmission part A4 can move more to the right, driving the blade core sleeve and the pliers head to produce a greater clamping force.

[0039] Example 2 In this embodiment, the main structure is the same as that of embodiment 1. Figures 7 to 15 As shown, the clamping force adjustment device includes a sliding switch 10 and a sliding pin 101 fixed at the lower end of the sliding switch 10, and the sliding pin 101 is slidably inserted in a sliding groove 111 provided in the housing, and the sliding switch 10 and the sliding pin 101 can only move along the sliding groove 111 under the housing limit; and a stepped notch is provided on the ultrasonic knife handle 3. For the convenience of limit, an annular boss is also provided at the end of the sliding pin 101 to prevent the sliding pin from being completely inserted into the sliding groove 111.

[0040] During adjustment, the sliding switch 10 is toggled, and the sliding switch 10 slides to drive the sliding pin 101 to slide in the slide groove 111. Similar to Example 1, the side of the sliding switch 10 is provided with a sliding slot 102, and the inner side of the handle upper shell slide groove 92 on which the sliding switch is installed on the housing is also provided with a sliding boss 93. After the sliding switch moves to a suitable gear, the side sliding slot 102 of the sliding switch 10 is engaged with the sliding boss 93 on the inner side of the handle upper shell slide groove 92, which provides a certain vibration feedback to the user, reminding the user that the switch has been switched to a fixed gear. Correspondingly, there are multiple sliding bosses 93 and they are arranged one by one with the stepped notches, and there is only one sliding slot 102. Press the ultrasonic knife handle 3 until the stepped notch of the ultrasonic knife handle 3 contacts the sliding pin 101, thereby limiting the rotation angle of the ultrasonic knife handle 3 in the housing.

[0041] The transmission mechanism includes a transmission member A4, a transmission member B6 and a transmission member C7 which are hingedly arranged in sequence, and the transmission member A4 is horizontally arranged on the top of the shell and its end is connected to the equipped return spring 5; the transmission member B6 is arranged below the transmission member A4 and its lower end is hinged to the transmission member C7 below, and the end of the transmission member C7 is hinged to the ultrasonic knife handle 3.

[0042] The ultrasonic scalpel handle 3 rotates under the grip of external force, and drives the transmission part C7, the transmission part B6, the transmission part A4 and the blade head sleeve equipped with the transmission part A4 to move in turn, controlling the opening and closing of the forceps head; the stepped notch of the ultrasonic scalpel handle 3 contacts and interferes with the sliding pin 101, limiting the rotation angle of the ultrasonic scalpel handle 3, and then adjusting the clamping force of the ultrasonic surgical scalpel.

[0043] The specific implementation is as follows: First, slide the sliding switch 10 to the desired position, press the ultrasonic knife handle 3 until the stepped notch of the ultrasonic knife handle 3 contacts the sliding pin 101, and the ultrasonic knife handle 3 cannot rotate further, thereby limiting the movement stroke of the transmission part A4 and limiting the rotation angle of the ultrasonic knife handle 3.

[0044] If the words "first", "second" and the like are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and the above words have no special meaning.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the invention claimed for protection. The scope of protection claimed for the present invention is defined by the attached claims and their equivalents.

[0046] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A knob-type adjustable clamping force ultrasonic scalpel, characterized in that: It includes an ultrasonic knife handle, a shell, a transmission mechanism and a clamping force adjustment device arranged in the shell, and the ultrasonic knife handle is hinged to the shell, the clamping force adjustment device and the ultrasonic knife handle are limitedly arranged, and the ultrasonic knife handle is provided with a corresponding limiting mechanism; When the clamping force adjustment device is adjusted to a suitable gear, the ultrasonic scalpel handle rotates to drive the limit mechanism to operate until the clamping force adjustment device cannot continue to rotate, thereby limiting the rotation angle of the ultrasonic scalpel handle and adjusting the clamp force of the ultrasonic surgical scalpel.

2. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 1, characterized in that: The clamping force adjustment device comprises an upper knob and a force adjustment knob arranged at the lower end thereof, and the force adjustment knob is provided with rotating bosses of different heights along the circumferential direction, and the rotating bosses are arranged extending along the axial direction, and a notch slot is correspondingly provided on the ultrasonic knife handle; When the upper knob is rotated, the upper knob synchronously drives the force adjustment knob to rotate, and the rotating bosses of different heights are adjusted to be located in the notched slots, thereby limiting the rotation angle of the ultrasonic knife handle in the shell.

3. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 2, characterized in that: The upper knob is provided with a plurality of knob slots, and the knob slots are arranged in one-to-one correspondence with the rotating bosses of different heights to form different gears; A limiting convex card is provided at the position of the upper knob installation hole arranged correspondingly on the shell; When the upper knob is rotated to the first gear position, the limit convex card is inserted into the knob slot and generates vibration; To change gears, simply turn the upper knob again.

4. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 2, characterized in that: A rotating piece for rotation is inserted on the upper knob.

5. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 2, characterized in that: The upper knob and the force adjustment knob are connected by a pin and a slot.

6. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 2, characterized in that: The heights of the rotating bosses arranged circumferentially on the force adjustment knob increase sequentially.

7. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 6, characterized in that: The number of the rotating bosses is 2 to 4, and the knob slots are arranged one by one correspondingly thereto.

8. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 1, characterized in that: The clamping force adjustment device comprises a sliding switch and a sliding pin fixed at the lower end of the sliding switch, and the sliding pin is slidably inserted in a sliding groove provided in the housing, and a stepped notch is provided on the ultrasonic knife handle; During adjustment, the sliding switch is toggled, and the sliding switch slides to drive the sliding pin to slide in the sliding groove, pressing the ultrasonic knife handle until the stepped notch of the ultrasonic knife handle contacts the sliding pin, thereby limiting the rotation angle of the ultrasonic knife handle in the shell.

9. The knob-type adjustable clamping force ultrasonic surgical knife according to claim 8, characterized in that: A sliding groove is arranged on the side of the sliding switch, and a sliding boss which is limit-engaged with the sliding groove is arranged inside the sliding groove of the upper shell of the handle on which the sliding switch is installed on the shell.

10. The knob-type adjustable clamping force ultrasonic surgical knife according to any one of claims 1 to 9, characterized in that: The transmission mechanism comprises a transmission member A, a transmission member B and a transmission member C which are hingedly arranged in sequence, and the transmission member A is horizontally arranged on the top of the housing and its end is connected to a reset spring; The transmission member B is arranged below the transmission member A and its lower end is hinged to the transmission member C below, while the end of the transmission member C is hinged to the ultrasonic knife handle; The ultrasonic knife handle rotates under the external force, and drives the transmission part C, the transmission part B, the transmission part A and the knife head sleeve equipped with the transmission part A to move in turn, and controls the opening and closing of the clamp head; The limiting mechanism on the ultrasonic scalpel handle interferes with the clamping force adjustment device to limit the rotation angle of the ultrasonic scalpel handle, thereby adjusting the clamping force of the ultrasonic surgical scalpel.

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