Ultrasonic knife with adjustable suction function

Abstract

The ultrasonic scalpel comprises a handle and a scalpel body, the scalpel body comprises an outer tube, a scalpel rod and a scalpel head, the scalpel head is arranged at one end, the scalpel rod is sleeved with the outer tube, an air suction cavity and a liquid suction cavity are formed in the outer tube, one end of the outer tube is close to the scalpel head, and the other end of the outer tube extends into the handle; the air suction cavity and the liquid suction cavity are connected with a first hose and a second hose respectively, the first hose is communicated with a first connector, the second hose is communicated with a second connector, and a moving mechanism is arranged in the handle and can push the outer pipe to completely cover the cutter head. The air suction cavity and the liquid suction cavity in the outer tube work separately, the air suction cavity is used for sucking smoke generated in an operation and guaranteeing the clearness of an operation field, and the liquid suction cavity needs the moving mechanism to push the outer tube to move and completely cover the tool bit, so that the liquid suction cavity can be better attached to hydrops, the hydrops can be sucked out conveniently, the suction cleanliness is guaranteed, and the operation efficiency is improved. Effective suction of two media is met, and operation efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasonic scalpel with adjustable suction function. Background Technology

[0002] The ultrasonic scalpel, a novel surgical energy device, utilizes high-frequency ultrasonic vibration to coagulate and cut tissue, offering advantages such as minimal thermal damage and less eschar. It has been widely used in minimally invasive and open surgeries. During surgery, the ultrasonic scalpel generates a large amount of surgical smoke (i.e., "electrosurgery smoke") due to tissue vaporization. Simultaneously, fluid accumulates in the surgical area due to irrigation, bleeding, or tissue exudation. Surgical smoke not only obscures the surgical field and affects operational precision, but also poses health risks to the surgical team due to harmful chemicals, active viruses, and cellular debris it contains. Furthermore, fluid accumulation in the surgical area interferes with instrument operation, increases the uncertainty of tissue thermal damage, and prolongs surgical time.

[0003] To address the aforementioned issues, some existing ultrasonic scalpel systems integrate suction functionality, aiming to achieve integrated operations of cutting, hemostasis, and fume / liquid removal using a single instrument. However, current ultrasonic scalpels with integrated suction functions suffer from a single suction channel, failing to simultaneously handle both "smoke extraction" and "liquid aspiration." Existing suction pathway designs typically employ a single path, without differentiating between the physical properties of gases and liquids. Smoke extraction requires a high-flow-rate, low-negative-pressure, large-cross-sectional-area channel to rapidly capture diffused smoke particles; while liquid aspiration requires a medium-to-low flow rate, higher negative pressure, and anti-clogging capabilities to effectively remove viscous liquids and tissue debris. Existing structures often compromise on one aspect while addressing the other. During smoke extraction, an unreasonable airflow path leads to smoke escape, while during liquid aspiration, the channel is prone to clogging due to narrowness or flow bends, making it difficult to effectively aspirate both media simultaneously and impacting surgical efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an ultrasonic scalpel with adjustable suction function, which works by having the air suction chamber and liquid suction chamber on the outer tube work separately to meet the effective suction of two media and ensure surgical efficiency.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An ultrasonic scalpel with adjustable suction function includes a handle and a scalpel body. The scalpel body is mounted on the handle and includes an outer tube, a scalpel shaft, and a scalpel head. The scalpel head is located at the end of the scalpel shaft away from the handle. The outer tube is sleeved on the scalpel shaft and forms a sliding fit with the scalpel shaft. An air suction chamber and a liquid suction chamber are respectively provided on opposite sides inside the outer tube. One end of the outer tube is close to the scalpel head. The ends of the air suction chamber and the liquid suction chamber near the scalpel head are open. The other end of the outer tube extends into the handle. The air suction chamber and the liquid suction chamber are respectively connected to a first flexible tube and a second flexible tube at one end inside the handle. The end of the first flexible tube away from the air suction chamber is connected to a first connector, and the end of the second flexible tube away from the liquid suction chamber is connected to a second connector. Both the first connector and the second connector are located on the outside of the handle. The handle is provided with a moving mechanism that pushes the outer tube to slide on the scalpel shaft. The moving mechanism can push the outer tube to completely cover the scalpel head.

[0006] By adopting the above technical solution, the suction chamber can work independently to remove smoke generated during surgery, ensuring a clear surgical field. The aspiration chamber, on the other hand, requires a moving mechanism to move the outer tube and completely cover the blade, allowing the aspiration chamber to better approach the accumulated fluid, facilitating its removal and ensuring thorough aspiration.

[0007] A further feature of the present invention is that: partitions are provided on opposite sides of the outer tube, and the two partitions and the inner wall of the outer tube respectively form the air suction chamber and the liquid suction chamber.

[0008] By adopting the above technical solution, the formation of the air suction chamber and the liquid suction chamber is facilitated, and the strength of both is guaranteed.

[0009] A further feature of the present invention is that: a push plate is provided at one end of the outer tube inside the handle; the moving mechanism is a telescopic motor; the telescopic motor is installed inside the handle; and the output shaft of the telescopic motor is connected to the push plate.

[0010] By adopting the above technical solution, the moving mechanism is a telescopic motor, which directly drives the sliding of the outer tube, which is simple and convenient.

[0011] A further feature of the present invention is that the handle is provided with a push switch, and the push switch is electrically connected to the telescopic motor.

[0012] By adopting the above technical solution, the push switch can control the operation of the telescopic motor.

[0013] A further configuration of the present invention is as follows: a limiting ring is provided at one end of the outer tube inside the handle; a first spring is sleeved on the portion of the outer tube inside the handle; one end of the first spring is connected to the inner wall of the handle; the other end of the first spring is connected to the limiting ring; the moving mechanism includes a pressure plate, a second spring, a slide rod, a first rack, a gear, and a second rack; the pressure plate is located in front of the pressing handle on the handle; the upper end of the pressure plate is inserted into the handle; two slide rods are provided and symmetrically arranged on the pressure plate; the slide rods are slidably connected to the handle; the second spring is sleeved on the slide rod; the pressure plate can slide along the sliding direction of the outer tube; when the first spring and the second spring are in their natural state, the outer tube does not cover the blade; the first rack is located on the pressure plate; the second rack is parallel to the first rack and installed on the limiting ring; the gear is located between the first rack and the second rack; the gear is rotatably connected to the handle; and the gear meshes with the first rack and the second rack respectively.

[0014] By adopting the above technical solution, the outer tube is pushed by pressing the pressure plate on the handle. When the pressure plate is pressed, the pressure plate moves backward, the first rack drives the gear to rotate, and the gear drives the second rack to slide in the opposite direction, thereby pushing the outer tube. When the pressure plate is released, the outer tube returns to its original position with the help of the elasticity of the first and second springs.

[0015] A further configuration of the present invention is as follows: the moving mechanism further includes a pressing rod, one end of which is connected to a pressure plate, and the other end of which presses against the pressing handle. The pressing handle has a limiting groove that cooperates with the pressing rod. The end of the pressing rod away from the pressure plate is inserted into the limiting groove. When the pressure plate is pressed, the pressing rod presses against the pressing handle, causing the blade head to close synchronously.

[0016] By adopting the above technical solution, the setting of the pressing rod makes the sliding of the pressure plate more stable, and allows the pressing handle on the handle to be pressed. As the outer tube slides towards the cutter head, the cutter head closes simultaneously, which is beneficial to the sliding of the outer tube.

[0017] A further feature of the present invention is that the handle is provided with an adjustment knob, which is used to select the working mode.

[0018] By adopting the above technical solutions, it is convenient to select different working modes.

[0019] A further feature of the present invention is that a flexible protective ring is provided at one end of the outer tube near the cutter head.

[0020] By adopting the above technical solution, it is convenient to protect the internal tissues when the outer tube absorbs the accumulated liquid.

[0021] In summary, the present invention has the following beneficial effects: Firstly, in this invention, the air suction chamber and the liquid suction chamber on the outer tube work separately. The air suction chamber is used to suction out the smoke generated during surgery to ensure a clear surgical field, while the liquid suction chamber requires a moving mechanism to move the outer tube to completely cover the blade, allowing the liquid suction chamber to better approach the accumulated fluid, making it easier to suction out the fluid, ensuring the cleanliness of the suction, satisfying the effective suction of both media, and ensuring surgical efficiency.

[0022] Secondly, the moving mechanism in this invention has two types: one is a telescopic motor, which directly drives the outer tube to move, which is simple and convenient; the other is a manual pressing type, which moves the pressure plate backward by pressing, the first rack drives the gear to rotate, and the gear drives the second rack to slide in the opposite direction, thereby pushing the outer tube. When the pressure plate is released, the elasticity of the first spring and the second spring allows the outer tube to return to its original position.

[0023] Thirdly, the pressing rod in this invention can press the pressing handle on the handle at the same time as pressing the pressing plate, so that the blade head closes synchronously while the outer tube slides towards the blade head, which is beneficial to the sliding of the outer tube. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention (Embodiment 1); Figure 2 This is a cross-sectional view of the blade body in this invention; Figure 3 This is a cross-sectional view of the handle in this invention (Embodiment 1); Figure 4 This is a schematic diagram of the structure of the cutting head in this invention; Figure 5 This is a schematic diagram of the overall structure of the present invention (Embodiment 2); Figure 6 This is a cross-sectional view of the handle in this invention (Embodiment 2).

[0025] In the diagram: 1. Handle; 11. Press switch; 12. Adjustment knob; 2. Blade body; 21. Outer tube; 211. Suction chamber; 212. Liquid suction chamber; 213. Partition plate; 22. Blade rod; 23. Blade head; 31. First flexible tube; 32. Second flexible tube; 33. First connector; 34. Second connector; 4. Moving mechanism; 41. Telescopic motor; 42. Pressure plate; 43. Second spring; 44. Slide rod; 45. First rack; 46. Gear; 47. Second rack; 48. Press rod; 5. Push plate; 6. Limiting ring; 7. First spring; 8. Press handle; 81. Limiting groove; 9. Flexible protective ring. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Example 1: An ultrasonic scalpel with adjustable suction function, such as Figure 1 and Figure 3 As shown, the device includes a handle 1 and a blade body 2. The blade body 2 is mounted on the handle 1. The blade body 2 includes an outer tube 21, a blade shank 22, and a blade head 23. The blade head 23 is located at the end of the blade shank 22 away from the handle 1. The outer tube 21 is sleeved on the blade shank 22, and the outer tube 21 and the blade shank 22 form a sliding fit. An air suction chamber 211 and a liquid suction chamber 212 are respectively provided on opposite sides inside the outer tube 21. Figure 2As shown, baffles 213 are provided on opposite sides inside the outer tube 21. The two baffles 213 and the inner wall of the outer tube 21 respectively form an air suction chamber 211 and a liquid suction chamber 212. The baffles 213 and the outer tube 21 are integrally formed during production to ensure strength. Of course, as the shape of the outer tube 21 changes, the interface shape of the tool holder 22 can also change accordingly. One end of the outer tube 21 is close to the blade head 23. The ends of the air suction chamber 211 and the liquid suction chamber 212 near the blade head 23 are open. The other end of the outer tube 21 extends into the handle 1. The ends of the air suction chamber 211 and the liquid suction chamber 212 inside the handle 1 are respectively connected to a first hose 31 and a second hose 32. The end of the first hose 31 away from the air suction chamber 211 is connected to a first connector 33, and the end of the second hose 32 away from the liquid suction chamber 212 is connected to a second connector 34. Both the first connector 33 and the second connector 34 are located on the outside of the handle 1. The handle 1 is equipped with a moving mechanism 4 that pushes the outer tube 21 to slide on the blade shank 22. The moving mechanism 4 can push the outer tube 21 to completely cover the blade head 23. In use, the first connector 33 needs to be connected to an air purification device, and the second connector 34 needs to be connected to a waste liquid collection component, and then connected to a negative pressure suction device or other suction tools. Of course, the suction tools also need to be electrically connected to the main unit to facilitate control of the working power of the suction tools. The suction chamber 211 can operate directly during use, especially when the blade 23 is working. The suction intensity of the suction tool can be changed by pressing the front button, adjusting the power of the blade 23. When the liquid suction chamber 212 is working, the moving mechanism 4 needs to push the outer tube 21 to cover the blade 23, allowing the opening of the liquid suction chamber 212 to better contact the accumulated liquid and ensure clean suction. At this time, the suction chamber 211 cannot operate, and the liquid suction chamber 212 operates independently.

[0031] like Figure 3 As shown, a push plate 5 is provided at one end of the outer tube 21 inside the handle 1. The moving mechanism 4 is a telescopic motor 41, which is installed inside the handle 1, and its output shaft is connected to the push plate 5. A push switch 11 is provided on the handle 1, and the push switch 11 is electrically connected to the telescopic motor 41. In this embodiment, the outer tube 21 is moved directly by the telescopic motor 41, which is simple and convenient. Of course, when the outer tube 21 is extended, the push handle 8 on the handle 1 needs to be pressed to close the cutter head 23, which facilitates the sliding of the outer tube 21. Such a moving mechanism 4 is more expensive, but its structure is simple.

[0032] An adjustment knob 12 is provided on the handle 1, which is used to select the working mode. The working modes generally include blade 23 working, blade 23 working, and air suction, air suction, and liquid suction modes. In liquid suction mode, the liquid suction intensity is adjusted by pressing the two front buttons, making it convenient to adjust the strength of liquid suction.

[0033] like Figure 4As shown, a flexible protective ring 9 is provided at the end of the outer tube 21 near the blade head 23. Since the outer tube 21 will come into contact with the internal tissue during the liquid aspiration mode, the flexible protective ring 9 can protect the internal tissue.

[0034] Example 2: The parts that are the same as in Example 1 will not be repeated. The difference is as follows: Figure 5 and Figure 6 As shown, a limiting ring 6 is provided at one end of the outer tube 21 inside the handle 1. A first spring 7 is sleeved on the part of the outer tube 21 inside the handle 1. One end of the first spring 7 is connected to the inner wall of the handle 1, and the other end of the first spring 7 is connected to the limiting ring 6. The moving mechanism 4 includes a pressure plate 42, a second spring 43, a slide rod 44, a first rack 45, a gear 46, and a second rack 47. The pressure plate 42 is located in front of the pressing handle 8 on the handle 1, and the upper end of the pressure plate 42 is inserted into the handle 1. Two slide rods 44 are provided and symmetrically arranged on the pressure plate 42. 4. The handle 1 is slidably connected to the first spring 7. The second spring 43 is sleeved on the slide rod 44. The pressure plate 42 can slide along the sliding direction of the outer tube 21. When the first spring 7 and the second spring 43 are in their natural state, the outer tube 21 does not cover the cutter head 23. The first rack 45 is set on the pressure plate 42. The second rack 47 is parallel to the first rack 45 and is installed on the limiting ring 6. The gear 46 is set between the first rack 45 and the second rack 47. The gear 46 is rotatably connected to the handle 1. The gear 46 meshes with the first rack 45 and the second rack 47 respectively.

[0035] Through the aforementioned moving mechanism 4, pressing the pressure plate 42 causes the first rack 45 to move, which in turn drives the gear 46 to rotate. The gear 46 then drives the second rack 47 to move in the opposite direction, thereby pushing the outer tube 21. When the pressure plate 42 is released, the elasticity of the first spring 7 and the second spring 43 allows the outer tube 21 to return to its original position.

[0036] The moving mechanism 4 also includes a pressing rod 48. One end of the pressing rod 48 is connected to the pressure plate 42, and the other end of the pressing rod 48 presses against the pressing handle 8. The pressing handle 8 has a limiting groove 81 that cooperates with the pressing rod 48. The end of the pressing rod 48 away from the pressure plate 42 is inserted into the limiting groove 81. When the pressure plate 42 is pressed, the pressing rod 48 presses the pressing handle 8, causing the cutter head 23 to close synchronously. The pressing rod 48 allows the pressing handle 8 on the handle 1 to be pressed synchronously when the pressure plate 42 is pressed, causing the cutter head 23 to close synchronously, facilitating the sliding of the outer tube 21. Of course, it also facilitates the stable sliding of the pressure plate 42. The limiting groove 81 restricts the position of the pressing rod 48 to prevent slippage during pressing. The pressing handle 8 on the pressing handle 1 does not affect the pressure plate 42.

[0037] Of course, in this embodiment, the pressure plate 42 replaces the auxiliary handle on the original pressing handle 8.

[0038] It should also be noted that, apart from the structure mentioned above, the other structures of the ultrasonic scalpel are all existing technologies, and therefore will not be described in detail.

[0039] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An ultrasonic scalpel with adjustable suction function, comprising a handle (1) and a blade (2), wherein the blade (2) is mounted on the handle (1), characterized in that: The blade body (2) includes an outer tube (21), a blade rod (22), and a blade head (23). The blade head (23) is located at the end of the blade rod (22) away from the handle (1). The outer tube (21) is sleeved on the blade rod (22), and the outer tube (21) forms a sliding fit with the blade rod (22). An air suction chamber (211) and a liquid suction chamber (212) are respectively provided on opposite sides inside the outer tube (21). One end of the outer tube (21) is close to the blade head (23). The ends of the air suction chamber (211) and the liquid suction chamber (212) near the blade head (23) are open. The other end of the outer tube (21) extends into the handle (1). The air chamber (211) and the liquid suction chamber (212) are respectively connected to one end of the handle (1) by a first hose (31) and a second hose (32). The end of the first hose (31) away from the air suction chamber (211) is connected to a first connector (33), and the end of the second hose (32) away from the liquid suction chamber (212) is connected to a second connector (34). The first connector (33) and the second connector (34) are both located on the outside of the handle (1). The handle (1) is provided with a moving mechanism (4) that pushes the outer tube (21) to slide on the blade (22). The moving mechanism (4) can push the outer tube (21) to completely cover the blade (23).

2. The ultrasonic scalpel with adjustable suction function according to claim 1, characterized in that: The outer tube (21) has partitions (213) on both sides, and the two partitions (213) and the inner wall of the outer tube (21) respectively form the air suction chamber (211) and the liquid suction chamber (212).

3. An ultrasonic scalpel with adjustable suction function according to claim 2, characterized in that: The outer tube (21) has a push plate (5) at one end inside the handle (1). The moving mechanism (4) is a telescopic motor (41). The telescopic motor (41) is installed inside the handle (1), and the output shaft of the telescopic motor (41) is connected to the push plate (5).

4. An ultrasonic scalpel with adjustable suction function according to claim 3, characterized in that: The handle (1) is provided with a push switch (11), which is electrically connected to the telescopic motor (41).

5. An ultrasonic scalpel with adjustable suction function according to claim 2, characterized in that: The outer tube (21) has a limiting ring (6) at one end inside the handle (1). The part of the outer tube (21) inside the handle (1) is fitted with a first spring (7). One end of the first spring (7) is connected to the inner wall of the handle (1), and the other end of the first spring (7) is connected to the limiting ring (6). The moving mechanism (4) includes a pressure plate (42), a second spring (43), a slide rod (44), a first rack (45), a gear (46), and a second rack (47). The pressure plate (42) is located in front of the pressing handle (8) on the handle (1). The upper end of the pressure plate (42) is inserted into the handle (1). The slide rod (44) has two rods and is symmetrically arranged on the pressure plate (42). The slide rod (44) slides. The handle (1) is connected to the second spring (43), which is sleeved on the slide rod (44). The pressure plate (42) can slide along the sliding direction of the outer tube (21). When the first spring (7) and the second spring (43) are in their natural state, the outer tube (21) does not cover the cutter head (23). The first rack (45) is located on the pressure plate (42). The second rack (47) is parallel to the first rack (45) and installed on the limiting ring (6). The gear (46) is located between the first rack (45) and the second rack (47). The gear (46) is rotatably connected to the handle (1). The gear (46) meshes with the first rack (45) and the second rack (47) respectively.

6. An ultrasonic scalpel with adjustable suction function according to claim 5, characterized in that: The moving mechanism (4) also includes a pressing rod (48), one end of which is connected to the pressure plate (42), and the other end of which is pressed on the pressing handle (8). The pressing handle (8) is provided with a limiting groove (81) that cooperates with the pressing rod (48). The end of the pressing rod (48) away from the pressure plate (42) is inserted into the limiting groove (81). When the pressure plate (42) is pressed, the pressing rod (48) presses the pressing handle (8), causing the blade (23) to close synchronously.

7. An ultrasonic scalpel with adjustable suction function according to any one of claims 2 or 6, characterized in that: The handle (1) is provided with an adjustment knob (12), which is used to select the working mode.

8. An ultrasonic scalpel with adjustable suction function according to claim 7, characterized in that: The outer tube (21) has a flexible protective ring (9) at one end near the cutter head (23).

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