CN110522509A - A multi-functional scissor-type high-frequency electric knife that can reduce thermal damage - Google Patents

Abstract

The invention discloses a multifunctional scissor-type high-frequency electric knife capable of reducing heat damage, which comprises a left handle and a right handle, a lower connecting rod and an upper connecting rod are connected through a rotating shaft, and upper and lower connecting rods are respectively provided with an upper , the lower jaw, the left handle includes the upper cover of the left handle and the lower cover of the left handle, the touch switch and the lower connecting rod are fixed on the lower cover of the left handle, the cylinder on the retaining hook is fixed in the round hole on the lower connecting rod, The stoppers are respectively connected with the catch hook and the lower link, the two ends of the spring are respectively connected with the lower link and the trigger baffle, the trigger stoppers are respectively connected with the trigger and the pendulum, the pendulum is connected with the blade, and the upper jaw is formed by the upper link. The front end, the plastic coating layer and the upper electrode piece are composed. The lower jaw is composed of the front end of the lower connecting rod, the plastic coating layer and the lower electrode piece. The upper jaw and the lower jaw are combined into a duckbill shape. The lower end is provided with insulating bumps. The invention has simple structure and reasonable design, improves the coagulation effect of tissues and shortens operation time.

Description

A multi-functional scissor-type high-frequency electric knife that can reduce thermal damage

technical field

The invention relates to a high-frequency electric knife, in particular to a multifunctional scissor-type high-frequency electric knife that can reduce heat damage.

Background technique

A high-frequency electrosurgical device is an electrosurgical instrument that replaces a mechanical scalpel for tissue cutting. It heats the tissue when the high-frequency and high-voltage current generated by the effective electrode tip contacts the body, and realizes the separation and coagulation of the body tissue, thereby achieving the purpose of cutting and hemostasis. Because of its extremely fast cutting, good hemostasis effect, and automatic disinfection of the wound side, it can greatly shorten the operation time, reduce the blood loss of patients, and thereby reduce complications. At present, the high-frequency electric knife has basically replaced the mechanical scalpel. However, the high-frequency electrosurgical knife generally has a fast thermal diffusion during use, which can easily cause thermal damage to surrounding tissues, reduce the coagulation effect of the target tissue, and prolong the operation time.

Contents of the invention

In order to solve the above problems, the present invention provides a high-frequency electric knife capable of reducing thermal damage and effectively shortening operation time.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

The present invention is a multifunctional scissor-type high-frequency electric knife capable of reducing heat damage, comprising a left handle and a right handle, the lower link on the left handle is fixedly connected to the upper link on the right handle through a rotating shaft, and the upper link There is an upper jaw at the front end, and a lower jaw at the front end of the lower link. The right handle includes the upper cover of the right handle and the lower cover of the right handle. The upper link is fixed between the right handle and the left handle. The left handle includes the upper cover of the left handle. and the lower cover of the left handle, the touch switch and the lower link are fixed on the lower cover of the left handle. One end of the spring is fixed on the lower connecting rod, and the other end is fixed on the trigger baffle on the trigger. The trigger baffle is respectively connected with the trigger and the swing rod, and the swing rod is connected with the blade. The front end of the upper connecting rod, the plastic coating layer and the upper electrode The pieces are connected together by injection molding process to form the upper jaw, the upper electrode piece is connected with the front end of the upper connecting rod through interference contact with the front end of the upper connecting rod through the bending elastic piece of the upper electrode piece at the end, and the front end of the lower connecting rod, the plastic coating layer and the lower electrode piece pass through The injection molding process is closely connected to form the lower jaw, and the upper jaw and the lower jaw are combined into a duckbill shape, and an insulating bump protruding downward is provided at the lower end of the upper jaw.

A further improvement of the present invention lies in that the insulating bumps are made of ceramic materials.

The further improvement of the present invention lies in that the pins of the touch switch are welded to the external cable, and the touch switch is respectively welded and connected to the upper connecting rod and the lower electrode sheet through lead wires.

A further improvement of the present invention is that: a cross post is arranged on the lower cover of the left handle, and the cross post passes through the fixing hole on the lower link to fix the lower link on the lower cover of the left handle.

A further improvement of the present invention lies in that a knife groove is provided at the middle position of the upper surface of the upper jaw and the middle position of the lower surface of the lower jaw.

The further improvement of the present invention is that: the upper cover of the right handle and the lower cover of the right handle are welded together.

The further improvement of the present invention is that: the upper cover of the left handle and the lower cover of the left handle are welded together.

The beneficial effect of the present invention is that: the plastic covering layer is made of polymer plastic, and the upper jaw and the lower jaw are wrapped on the outside of the upper connecting rod and the lower connecting rod with the polymer plastic covering layer, which can effectively reduce the And the thermal diffusion of the lower jaw keeps the temperature of the peripheral surface of the upper and lower jaws always in a low state, thereby reducing the thermal damage of the peripheral tissue, and the polymer plastic is easy to process and shape, no secondary processing is required, and the processing time is shortened. The combination of the upper jaw and the lower jaw forms a duckbill shape, and the sides are arc-shaped, which facilitates the prying and separation of tissues. The insulating bump is made of ceramic material, which not only ensures its strength and hardness, but also further improves the gripping force on the tissue. When the upper jaw and the lower jaw are in the closed state, the insulating bump makes the upper electrode piece and the lower jaw Keep a certain safe distance between the lower electrodes to avoid short-circuit conduction between the two electrodes and cause failure, and can effectively ensure the consistency of tissue coagulation.

The invention has a simple structure and a reasonable design, can avoid heat damage from surrounding tissues caused by thermal diffusion, further improves the coagulation effect of tissues, shortens operation time, and improves the success rate of operations.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a partial sectional view of Fig. 1 .

Fig. 3 is a partially enlarged view of Fig. 1 .

Fig. 4 is a side view of the present invention.

FIG. 5 is a partial cross-sectional schematic diagram in FIG. 4 .

Figure 6 is the internal structure diagram after removing the upper cover of the left handle.

Fig. 7 is a schematic diagram of the internal structure after removing the retaining hook.

Fig. 8 is a perspective view of the present invention.

Among them: 1- left handle, 101- upper cover of left handle, 102- lower cover of left handle, 2- right handle, 3- lower connecting rod, 4- upper connecting rod, 5- upper jaw, 6- touch switch , 7-hook, 8-spring, 9-trigger, 901-trigger baffle, 10-swing rod, 11-blade, 12-upper electrode, 13-plastic coating, 14-lower electrode, 15- Insulation protruding point, 16-knife groove, 17-bending shrapnel of upper electrode sheet, 18-lower jaw, 19-block piece, 20-front end of upper connecting rod, 21-front end of lower connecting rod, 22-cross column.

Detailed ways

In order to enhance the understanding of the present invention, the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

As shown in Figures 1-8, the present invention is a multifunctional scissor-type high-frequency electric knife that can reduce thermal damage, including a left handle 1 and a right handle 2, a lower link 3 on the left handle 1 and a lower link on the right handle. Upper connecting rod 4 is fixedly connected by a rotating shaft, upper jaw 5 is provided at the front end of upper connecting rod 4, lower jaw 18 is provided at the front end of lower connecting rod 3, right handle 2 includes right handle upper cover and right handle lower cover, upper connecting rod The rod 4 is fixed between the right handle and the left handle, and the upper cover of the right handle and the lower cover of the right handle are welded together by ultrasonic waves. The left handle lower cover 102 is also welded together by ultrasonic, the touch switch 6 and the lower connecting rod 3 are fixed on the left handle lower cover 102, the left handle lower cover 102 is provided with a cross post 22, and the cross post 22 passes through Through the fixing hole on the lower connecting rod 3, the lower connecting rod 3 is fixed on the lower cover 102 of the left handle, the cylinder on the retaining hook 7 is fixed in the round hole on the lower connecting rod 3, and the retaining piece 19 is connected with the retaining hook 7 and the lower retaining rod 3 respectively. The connecting rod 3 is connected, and the lower connecting rod 3 is connected with the trigger baffle 901 through a spring 8. Both the lower connecting rod and the trigger baffle 901 are provided with fixing holes. , and can also be disassembled at the same time, the trigger block 901 is respectively connected with the trigger 9 and the swing rod 10, the swing rod 10 is connected with the blade 11, and the blade is assembled in the assembly groove on the lower link 3, at the middle position of the upper surface of the upper jaw 5 and the middle position of the lower surface of the lower jaw 18 are provided with a knife groove 16, and the swing rod 10 drives the blade to move in the assembly groove and the knife groove 16. Connected together by injection molding process to form the upper jaw 5, the upper electrode piece 12 is connected with the front end 20 of the upper connecting rod through the interference contact connection of the upper electrode piece bent elastic piece 17 at its end, which can ensure the reliability of the electrical connection, and the upper connecting rod The front end 20 is arranged on the front end of the upper connecting rod 5 and integrally formed with the upper connecting rod 5. The front end 21 of the lower connecting rod is arranged on the front end of the lower connecting rod 3 and is integrally formed with the lower connecting rod 3. The front end 21 of the lower connecting rod is covered with plastic The layer 13 and the lower electrode piece 14 are closely connected together by injection molding process to form the lower jaw 18, the upper jaw 5 and the lower jaw 18 are combined into a duckbill shape, and the lower end of the upper jaw 5 is provided with a downwardly protruding insulation The bump 15 is provided with an assembly groove at the front end of the upper connecting rod 4, and a part of the insulation projection 15 is fixed in the assembly groove. The lower end of the insulation projection protrudes downward through the plastic coating layer and the upper electrode sheet. The point 15 is made of insulating ceramic material, which has high hardness and strength, and can improve the gripping force of the tissue. The downward protrusion can make the upper electrode sheet 12 when the upper jaw 5 and the lower jaw 18 are closed. Keep a certain distance from the lower electrode sheet 14 to avoid short circuit failure between the upper electrode sheet 12 and the lower electrode sheet 14, so that the coagulation consistency of the tissue can be effectively guaranteed.

In the specific work, it is necessary to cooperate with a high-frequency generator and apply a high-frequency high-power sine wave. When the human tissue to be operated is between the upper jaw 5 and the lower jaw 18, the left handle 1 and the right handle 2 are placed between the doctor Under the holding force, the touch switch 6 realizes electrical conduction after being stressed, and the catch hook 7 is forced to make the catch 19 swing, and the catch boss on the catch 19 gives way to the trigger catch. The trigger 9 is in a free state and can be pulled to the left. The high-frequency current is released between the upper electrode sheet 12 and the lower electrode sheet 14, thereby generating a thermal effect on the human tissue between the electrocoagulation, and its deep part spreads radially. It turns into a small light brown eschar to coagulate the protein in the blood, so as to achieve hemostasis without forming obvious arc. Its range of action is limited to between the upper jaw and the lower jaw, without the use of pole plates. Push the trigger 9 to move to the left after electrocoagulation, the trigger 9 drives the trigger block 901, the swing rod 10, and the blade 11 to move to the right, and the blade 11 moves to the right in the knife groove 16 to realize tissue cutting. At this time, the spring 8 is in a compressed state, loose When the trigger 9 is opened, under the action of the spring 8, the blade 11 returns to the original position under the drive of the trigger block 901 and the fork 10.

The invention has a simple structure and a reasonable design, can avoid heat damage from surrounding tissues caused by thermal diffusion, further improves the coagulation effect of tissues, shortens operation time, and improves the success rate of operations.

Claims (7)

1. A multifunctional scissor-type high-frequency electric knife that can reduce thermal damage, including a left handle (1) and a right handle (2), the lower link (3) on the left handle (1) is connected to the right The upper link (4) on the handle is fixedly connected by a rotating shaft, an upper jaw (5) is arranged at the front end of the upper link (4), and a lower jaw (18) is arranged at the front end of the lower link (3). ), characterized in that: the right handle (2) includes a right handle upper cover and a right handle lower cover, the upper link (4) is fixed between the right handle and the left handle, and the left handle (1) It includes a left handle upper cover (101) and a left handle lower cover (102), on which a touch switch (6) and the lower connecting rod (3) are fixed, The cylinder on the retaining hook (7) is fixed in the round hole on the lower link (3), the retaining piece (19) is respectively connected with the retaining hook (7) and the lower link (3), and the spring (8) One end is fixed on the lower link (3), and the other end is fixed on the trigger baffle (901) on the trigger (9), and the trigger baffle (901) is respectively connected to the trigger (9) ) is connected with the swing rod (10), the swing rod (10) is connected with the blade (11), the front end of the upper connecting rod (20), the plastic coating layer (13) and the upper electrode piece (12) are passed through the injection molding process Connected together to form the upper jaw (5), the upper electrode piece (12) is connected with the front end 20 of the upper connecting rod in interference contact through the upper electrode piece bending elastic piece (17) at its end, the The front end of the lower connecting rod (21), the plastic covering layer (13) and the lower electrode piece (14) are tightly connected together by injection molding process to form the lower jaw (18), the upper jaw (5) and the The lower jaws (18) are combined into a duckbill shape, and a downwardly protruding insulating bump (15) is provided at the lower end of the upper jaws (5). 2. A multifunctional scissor-type high-frequency electric knife capable of reducing thermal damage according to claim 1, characterized in that: the insulating bumps (15) are made of ceramic materials. 3. A multifunctional scissor-type high-frequency electric knife that can reduce thermal damage according to claim 1, characterized in that: the pins of the touch switch (6) are welded to the external cable, and the touch switch (6) The type switch (6) is respectively welded and connected to the upper connecting rod (4) and the lower electrode piece (14) through lead wires. 4. A multifunctional scissor-type high-frequency electric knife capable of reducing thermal damage according to claim 1, characterized in that: a cross post (22) is set on the lower cover (102) of the left handle, and the cross column (22) is The column (22) passes through the fixing hole on the lower connecting rod (3) to fix the lower connecting rod (3) on the lower cover of the left handle (102). 5. A multifunctional scissor-type high-frequency electric knife that can reduce thermal damage according to claim 1, characterized in that: the middle position of the upper surface of the upper jaw (5) and the lower jaw (18 ) are provided with knife grooves (16) in the middle of the lower surface. 6. A multifunctional scissor-type high-frequency electric knife capable of reducing thermal damage according to claim 1, characterized in that: the upper cover of the right handle and the lower cover of the right handle are welded together. 7. A multifunctional scissor-type high-frequency electric knife that can reduce thermal damage according to claim 1, characterized in that: the left handle upper cover (101) and the left handle lower cover (102) are welded together .