Ultrasonic knife capable of accurately controlling smoke exhaust amount

Abstract

The utility model relates to the technical field of medical instruments, in particular to an ultrasonic knife capable of accurately controlling the smoke discharge amount. The rod body is arranged at the connecting end of the handle, the end, away from the handle, of the rod body is connected with a clamping piece, and the clamping piece is connected to the outer wall face of the rod body; the cutter bar is arranged along the axial direction of the bar body and is arranged in the bar body, the cutter bar comprises a cutting part, the cutting part is arranged at one end far away from the handle and extends out of the bar body, and a transition surface is formed between the cutting part and the cutter bar; a suction cavity is formed in the cutter bar, and the opening end of the suction cavity is arranged on the transition surface; the suction cavity is arranged in the cutter bar, the controller is connected with the handle, a connecting pipe is connected to the controller, one end of the connecting pipe is arranged in the controller, and the other end of the connecting pipe is connected with the suction cavity. The pressure of the abdominal cavity can be controlled through the sensor and the switch, and operation stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a harmonic scalpel with precise smoke exhaust volume control. Background Art

[0002] With the rapid development of modern medical technology, surgical operations are becoming more and more inclined to be minimally invasive and precise. As one of the most important surgical instruments in the field of minimally invasive surgery, the harmonic scalpel has been widely used because it can efficiently achieve tissue cutting, coagulation and hemostasis, and has the advantages of less postoperative bleeding, less pain and fast recovery. However, during the operation, the harmonic scalpel will inevitably generate a certain amount of smoke, which is mainly generated by tissue pyrolysis and charring. As the operation time prolongs, the smoke will accumulate continuously, seriously affecting the clarity of the surgical field of view, and further affecting the precision and speed of surgical operation.

[0003] In existing products, the smoke exhaust efficiency is not good, there is still smoke diffusion affecting the surgical field of view, and the abdominal cavity pressure cannot be stably guaranteed, affecting the stability of the operation.

[0004] Therefore, this application develops a harmonic scalpel with precise smoke exhaust volume control to solve the problems existing in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a harmonic scalpel with precise smoke exhaust volume control to solve the problems of low smoke exhaust efficiency, poor smoke exhaust effect and inability to control the abdominal cavity pressure when using the harmonic scalpel in the prior art.

[0006] The technical solution of the utility model is: a harmonic scalpel with precise smoke exhaust volume control, comprising:

[0007] A handle;

[0008] A rod body, arranged at the connecting end of the handle, and a clip is connected to the end of the rod body far away from the handle, and the clip is connected to the outer wall surface of the rod body;

[0009] A knife rod, arranged along the axial direction of the rod body and arranged inside the rod body. The knife rod includes a cutting part, the cutting part is arranged at the end far away from the handle and extends outside the rod body, and a transition surface is formed between the cutting part and the knife rod; an attraction cavity is arranged inside the knife rod, and the open end of the attraction cavity is arranged on the transition surface;

[0010] A controller, connected to the handle, a connecting pipe is connected to the controller, one end of the connecting pipe is arranged inside the controller, and the other end is connected to the attraction cavity.

[0011] Preferably, the cutting part is flat, and the suction cavity is arranged on one side of the cutting part, axially along the cutter bar and parallel to the flat surface of the cutting part.

[0012] Preferably, the clamping piece is fixedly connected to the outer wall surface of the rod body. The length of the clamping piece is the same as that of the cutting part, and the projection of the clamping piece on the cutting part falls on the cutting part.

[0013] Preferably, the suction cavity is located between the clamping piece and the cutting part, and the distances from the center of the suction cavity to the two side edges of the cutting part are equal.

[0014] Preferably, the transition surface is inclined, so that the contour of the end of the suction cavity close to the cutting part is an inclined ellipse.

[0015] Preferably, a switch and a sensor for detecting the smoke suction amount are provided on the controller.

[0016] Preferably, a negative pressure device is arranged in the controller. One end of the connecting pipe away from the suction cavity is connected to the negative pressure device to realize negative pressure suction.

[0017] Compared with the prior art, the advantages of the present utility model are:

[0018] (1) By arranging the suction cavity in the cutter bar, the suction cavity can contact and absorb the smoke generated during the operation at a closer distance, improving the smoke exhaust efficiency;

[0019] (2) Since the suction cavity is arranged inside the cutter bar, the ultrasonic knife structure is more compact, without external interference, reducing the interference factors during the operation;

[0020] (3) The abdominal cavity pressure can be controlled through the sensor and the switch to ensure the stability of the operation;

[0021] (4) The suction cavity is arranged in the middle of one end of the cutter bar, so that the pressures on both sides of the suction cavity are balanced, reducing the resistance to absorb the smoke, making the smoke enter the suction cavity more smoothly, and improving the smoke exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0023] Figure 1 is the front view of an ultrasonic knife for precisely controlling the smoke exhaust amount according to the present utility model;

[0024] Figure 2 is the structural schematic diagram of an ultrasonic knife for precisely controlling the smoke exhaust amount according to the present utility model;

[0025] Figure 3 is Figure 2 the enlarged structural diagram of A in

[0026] Figure 4 The left view of an ultrasonic scalpel for precisely controlling the smoke exhaust volume according to the present utility model;

[0027] Figure 5 is Figure 4 the enlarged structure diagram of B in

[0028] Figure 6 The right view of an ultrasonic scalpel for precisely controlling the smoke exhaust volume according to the present utility model;

[0029] Figure 7 The front sectional view of an ultrasonic scalpel for precisely controlling the smoke exhaust volume according to the present utility model;

[0030] Figure 8 is Figure 7 the enlarged structure diagram of C in

[0031] Wherein: 1. Handle; 2. Shaft body; 3. Clip; 4. Knife bar; 41. Cutting part; 42. Suction cavity; 43. Transition surface; 5. Controller; 51. Switch; 52. Sensor; 6. Connecting pipe. Specific embodiments

[0032] The following combines specific embodiments to further elaborate in detail on the content of the present utility model:

[0033] As Figures 1-3 shown, an ultrasonic scalpel for precisely controlling the smoke exhaust volume includes a handle 1, a shaft body 2, a clip 3, and a knife bar 4; the shaft body 2 is connected to the connection end of the handle 1, and a clip 3 is connected to the end of the shaft body 2 away from the handle 1. The clip 3 is arranged on the outer wall surface of the shaft body 2 and is used to fix tissues and assist the knife bar 4 in cutting, facilitating the progress of the operation. The knife bar 4 is arranged inside the shaft body 2 and along the axial direction of the shaft body 2. The knife bar 4 includes a cutting part 41, and the cutting part 41 is located at the end away from the handle 1 and extends outside the shaft body 2. After the ultrasonic scalpel is started, the knife bar 4 generates high-intensity ultrasonic waves and is accompanied by high heat to eliminate local tumor tissues. When eliminating tumor tissues, smoke will be generated, and a suction cavity 42 is axially arranged inside the knife bar 4 along the shaft body 2. The suction cavity 42 extends into the handle 1, and the handle 1 is connected to a controller 5. A connecting pipe 6 is connected to the controller 5. One end of the connecting pipe 6 is communicated with the suction cavity 42, and the other end is arranged inside the controller 5. The smoke is sucked out through the suction cavity 42 and the connecting pipe 6, thereby discharging the smoke.

[0034] In this embodiment, as Figures 3-5As shown, a transition surface 43 is formed between the cutting part 41 and the tool bar 4. The opening end of the suction cavity 42 is arranged on the transition surface 43. The transition surface 43 is inclined, so that the contour of the end of the suction cavity 42 close to the cutting part 41 is an inclined ellipse, which can adapt to the smoke flow in different directions. Moreover, the shape of the ellipse and the inclined angle help to guide the smoke into the suction cavity 42 more smoothly, thereby improving the smoke collection efficiency. At the same time, the inclined ellipse can increase the cross-sectional area of the opening end of the suction cavity 42, thereby further improving the smoke collection ability.

[0035] Among them, the suction cavity 42 is arranged inside the tool bar 4, making the ultrasonic knife structure more compact. Without an external smoking device, it reduces the interference of foreign objects on the operation. And the opening end of the suction cavity 42 is close to the cutting part 41. When removing tumor tissue, the opening end of the suction cavity 42 is closer to the position where the smoke is generated, increasing the contact space with the smoke and being able to suck the smoke before it spreads, increasing the exhaust efficiency. At the same time, it can also avoid the poor exhaust effect caused by the external smoking device being far away or at an inappropriate angle.

[0036] Specifically, the cutting part 41 is flat. The flat cutting part 41 can better contact the skin or other treatment areas, ensuring that the energy is more accurately focused on the target area, thereby improving the treatment accuracy and effect. At the same time, it can cover a larger treatment area and complete the treatment process in a shorter time. The suction cavity 42 is arranged on one side of the cutting part 41, arranged along the axial direction of the tool bar 4 and parallel to the flat surface of the cutting part 41. During treatment, the smoke mainly rises along the cutting part 41. The suction cavity 42 is parallel to the flat surface of the cutting part 41, which is conducive to the absorption and capture of the smoke, preventing the smoke from spreading due to untimely suction and being unfavorable for the exhaust of the smoke.

[0037] Furthermore, as Figures 7-8 shown, the clamping piece 3 is fixed on the outer wall surface of the rod body 2. The length of the clamping piece 3 is the same as that of the cutting part 41. The projection of the clamping piece 3 on the cutting part 41 falls on the cutting part 41, reducing the risk of accidentally injuring the surrounding tissues, improving the stability of the ultrasonic knife during operation, and preventing adverse consequences caused by shaking or deviation.

[0038] To improve the smoking efficiency, the suction cavity 42 is arranged between the clamping piece 3 and the cutting part 41, and the distance from the center of the suction cavity 42 to the two side edges of the cutting part 41 is equal, keeping the pressure on both sides of the suction cavity 42 balanced, reducing the resistance of the smoke during the flow process, being able to more effectively suck the smoke from the operation area into the suction cavity 42, enabling the smoke to be captured and discharged by the connecting pipe 6 more smoothly. At the same time, it also prevents the excessive pressure difference on both sides of the suction cavity 42 from causing the ultrasonic knife to shake or deviate from the predetermined position in the operation area, thus affecting the operation field of view and the accuracy of the operation.

[0039] AsFigure 6 As shown, in order to accurately control the abdominal cavity pressure and ensure the stability of the operation, a negative pressure device is provided in the controller 5. One end of the connecting pipe 6 away from the suction cavity 42 is connected to the negative pressure device, and the suction of the smoke is realized through the negative pressure device. A switch 51 and a sensor 52 for detecting the smoke suction amount are also provided on the controller 5. The size of the abdominal cavity pressure is judged by the sensor 52, and the start and stop of the negative pressure device are controlled by the switch 51.

[0040] The implementation principle of this embodiment:

[0041] When using the ultrasonic scalpel for surgery, when the ultrasonic scalpel contacts the tissue to be treated, a certain amount of smoke will be generated, which will obstruct the vision and affect the progress of the operation. At this time, press the switch 51 to start the negative pressure device. The connecting pipe 6 and the suction cavity 42 generate an attractive force on the smoke. The smoke moves along the flat surface of the cutting part 41, and the open end of the suction cavity 42 is arranged on the transition surface 43. Therefore, the smoke will be discharged out of the body through the suction cavity 42. At the same time, the suction cavity 42 is arranged at the center of one end of the knife rod 4 and is equidistant from the two side edges of the cutting part 41, so that the negative pressures generated on both sides are equal, increasing the smoking efficiency while preventing the pressure difference from being too large and the ultrasonic scalpel from shifting. When sucking the smoke, the abdominal cavity pressure can be judged by the sensor 52, and the switch 51 can be pressed at any time to stop the negative pressure device to ensure the stability of the operation. The above embodiments are only for explaining the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. An ultrasonic scalpel for precisely controlling the smoke exhaust volume, characterized in that Comprising: A handle (1); A rod body (2) provided at the connecting end of the handle (1), and a clamping piece (3) is connected to the end of the rod body (2) away from the handle (1), and the clamping piece (3) is connected to the outer wall surface of the rod body (2); A tool bar (4) arranged along the axial direction of the rod body (2) and disposed within the rod body (2), the tool bar (4) includes a cutting portion (41) provided at the end away from the handle (1) and extending outside the rod body (2), and a transition surface (43) is formed between the cutting portion (41) and the tool bar (4); an aspiration cavity (42) is provided within the tool bar (4), and the open end of the aspiration cavity (42) is disposed on the transition surface (43); A controller (5) connected to the handle (1), a connecting pipe (6) is connected to the controller (5), one end of the connecting pipe (6) is disposed within the controller (5), and the other end is connected to the aspiration cavity (42).

2. The ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 1, wherein: The cutting portion (41) is flat, the aspiration cavity (42) is provided on one side of the cutting portion (41), arranged along the axial direction of the tool bar (4), and is parallel to the flat surface of the cutting portion (41).

3. The ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 1, wherein: The clamping piece (3) is fixedly connected to the outer wall surface of the rod body (2), the length of the clamping piece (3) is the same as the length of the cutting portion (41), and the projection of the clamping piece (3) on the cutting portion (41) falls on the cutting portion (41).

4. An ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 3, characterized in that: The aspiration cavity (42) is located between the clamping piece (3) and the cutting portion (41), and the distance from the center of the aspiration cavity (42) to the two side edges of the cutting portion (41) is equal.

5. An ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 1, characterized in that: The transition surface (43) is inclined such that the contour of the end of the aspiration cavity (42) close to the cutting portion (41) is an inclined ellipse.

6. An ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 1, characterized in that: The controller (5) is provided with a switch (51) and a sensor (52) for detecting the smoke aspiration amount.

7. An ultrasonic scalpel for precisely controlling the smoke exhaust volume according to claim 1, characterized in that: A negative pressure device is provided within the controller (5), and the end of the connecting pipe (6) away from the aspiration cavity (42) is connected to the negative pressure device to achieve negative pressure aspiration.

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