CN112075986A - Hand-held hot melting knife - Google Patents

Abstract

The invention belongs to the technical field of medical appliances, and in particular relates to a hand-held hot-melt knife, which comprises a gun-handle-type casing with a built-in power supply, a knife handle is installed at the front end of the casing, and an end of the knife handle is provided with A hot-melt cutter head, an adjusting roller is rotatably installed on the housing; the hot-melt cutter head includes an upper cutter head and a lower cutter head, and a micro heating device is arranged on the lower cutter head, and the micro heating device is connected with the The built-in power supply is connected by wires to form a hot-melt circuit, and a current strength adjustment device and a temperature protection device are connected in series on the hot-melt circuit. The invention does not need a high-frequency power generator and a connecting wire, and is easy to use; the current does not pass through the human body during the operation, but only passes through the inside of the micro heating device on the knife head, which has no effect on patients using cardiac pacemakers, and does not need to use a negative electrode. And the current can be accurately limited by controlling the size of the resistance to generate quantitative heat energy, and the thermal damage is relatively small.

Description

Handheld Hot Melt Knife

technical field

The invention belongs to the technical field of medical appliances, and in particular relates to a hand-held hot-melt knife.

Background technique

The current cutting and hemostasis surgical equipment is mainly divided into two categories: one uses mechanical energy to achieve the effect of cutting hemostasis, the representative of which is the ultrasonic knife; the other uses high-frequency current to generate the effect of cutting hemostasis through tissue heating, the representative of which is bipolar Coagulation knife, monopolar electric hook, monopolar electric knife, etc. Surgical machines created using these two types of principles have their own advantages and disadvantages.

The current market usage is: for long-term and difficult major operations, bipolar coagulation cutter and ultrasonic knife are used relatively more, while for minor operations with short time and less difficulty, monopolar electric hook and monopolar electric knife are used. relatively more.

Disadvantages of Ultrasonic Knife:

1) There are many cutting steps (three steps: closing, excitation, reset), and the cutting speed is slow.

2) Mechanical vibration causes tissue splashing, especially tumor tissue has the risk of splashing and planting tumor tissue.

3) Easy to damage, when the forceps head touches hard materials or tissues (such as grasping forceps behind bones, etc.), it is easy to break.

4) The structure is complex and the cost is high.

5) The hemostatic effect is not good.

6) Blood cannot be clotted during liver tissue cutting.

7) A high frequency power generator is required.

Defects of monopolar electric hook and electric knife:

1) The heat generation is large, and the surrounding tissues are easily damaged by heat.

2) Laparoscopic surgery is not applicable.

3) Negative plates are required, and there is a risk of thermal burns on the negative plates.

4) A high frequency power generator is required.

Disadvantages of Bipolar Condensing Knife:

1) Some surgical procedures are difficult to stoma or require certain manipulation skills.

2) It is not possible to use the back cutting technique to cut.

3) The smoke is slightly larger during use, which affects the vision.

4) There is a certain adhesion of the cutter head during use.

5) A high frequency power generator is required.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the purpose of the present invention is to provide a hand-held hot melt knife that does not require a high-frequency power generator and connecting wires, is easy to operate and use, and is suitable for both endoscopic surgery and open surgery.

In order to achieve the above technical purpose, the present invention adopts the following technical scheme: a hand-held hot-melt knife, comprising a gun-grip-type casing with a built-in power supply, a handle is installed at the front end of the casing, and the end of the handle is provided with There is a hot-melt cutter head that can be opened and closed, an adjusting roller is rotatably installed on the casing, and the adjusting roller controls the rotation of the handle and the hot-melt cutter head, and a trigger is also hinged on the casing. the trigger controls the opening size of the hot-melt cutter head;

The hot-melt cutter head includes an upper cutter head and a lower cutter head, and a micro heating device is arranged on the lower cutter head. A current strength adjustment device and a temperature protection device are connected in series.

As a preferred technical solution, the upper cutter head is provided with an anti-adhesion bead.

As a preferred technical solution, the current intensity adjustment device includes a first resistor and a second resistor arranged in parallel, and the resistance values of the first resistor and the second resistor are different; the first resistor is connected in series with a first control button, the second resistor is connected in series with a second control button.

As a preferred technical solution, both the first control button and the second control button are arranged on the upper part of the trigger.

Due to adopting the above-mentioned technical scheme, the present invention has at least the following beneficial effects:

(1) The present invention adopts a portable power supply, and the power supply is assembled in the handle, without the need for a high-frequency power generator and a connecting wire, which is convenient to use, and is suitable for both endoscopic surgery and open surgery.

(2) During the operation, the current does not pass through the human body, but only passes through the micro heating device on the knife head, which has no effect on patients using cardiac pacemakers, and no need to use negative plates, which reduces risks and saves costs.

(3) The hand-held design, combined with the roller and the trigger, is not only easy to operate, but also can perform stoma, back-cut and other techniques that cannot or are difficult to do with the bipolar coagulation cutter.

(4) During use, since the current can be accurately limited by controlling the size of the resistance to generate quantitative heat energy, the thermal damage is relatively small. The smoke generated during the work is small and does not affect the vision.

(5) There is anti-adhesion material on the cutter head, which can effectively reduce the adhesion of tissue. The effect of coagulation while cutting is good, and it can be used for liver surgery.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

1 is a schematic structural diagram of an embodiment of the present invention;

Fig. 2 is the state schematic diagram when the hot melt cutter head is opened;

Fig. 3 is the state schematic diagram when the hot melt cutter head is closed;

Fig. 4 is the control principle diagram of the embodiment of the present invention;

FIG. 5 is a use state reference diagram of an embodiment of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, as those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

Example

As shown in FIG. 1 , the hand-held hot-melt knife includes a gun-grip-type housing 1 with a built-in power supply, the housing 1 has a grip portion, that is, a handle 11 , and a front end of the housing 1 is mounted with an elongated The handle 2, the end of the handle 2 is provided with a hot-melt cutter head 3 that can be opened and closed, and an adjusting roller 4 is rotatably installed on the housing 1, and the adjusting roller 4 controls the handle 2 And the rotation of the hot-melt cutter head 3, the casing 1 is also hinged with a trigger 5, and the trigger 5 controls the opening size of the hot-melt cutter head 3 through a pull wire; It is not only simple to operate, but also can perform stoma, back incision and other techniques that cannot or are difficult to do with bipolar coagulation cutter.

2 to 5 , the hot-melt cutter head 3 includes an upper cutter head 31 and a lower cutter head 32, and the lower cutter head 32 is provided with a miniature heating device 33 (such as a thermal wire, etc.), and the current does not pass through during the operation. The human body only passes through the inside of the micro heating device 33 on the cutter head, which has no effect on patients using cardiac pacemakers, and no need to use a negative plate, which reduces risks and saves costs; the upper cutter head is provided with anti-adhesion The bead 34 can effectively reduce the adhesion of tissue, and has a good coagulation effect while cutting, and can be used for liver surgery. The micro heating device 33 and the built-in power supply 6 are connected by wires to form a hot-melt circuit, and the hot-melt circuit is serially connected with a current strength adjusting device 7 and a temperature protection device 8 . The portable built-in power supply is used, and the power supply is assembled in the handle, without the need for a high-frequency power generator and a connecting wire, and is easy to operate and use. It can be applied to both endoscopic surgery and open surgery.

The current intensity adjusting device 7 includes a first resistor 71 and a second resistor 72 arranged in parallel, the first resistor 71 is connected in series with a first control button 73, and the second resistor 72 is connected in series with a second control button 74. The resistance values of the first resistor 71 and the second resistor 72 are different. If the first resistor 71 is a large resistor and the second resistor 72 is a small resistor, the first control button 73 is a low-power button, and the second control button 73 is a low-power button. Button 74 is a high-power button. The first control button 73 and the second control button 74 are both arranged on the upper part of the trigger 5, which is convenient for flexible control during the operation. In this way, the current can be precisely limited by controlling the size of the resistance to generate quantitative heat energy during use, so the thermal damage is relatively small. The smoke generated during the work is small and does not affect the vision.

4, the working principle of the present invention is as follows: the high-power button (the second control button 74) is activated, and the current is transmitted to the miniature heating device 33 by the built-in power supply 6, the small resistance (the second resistance 72), and the temperature protection device 8, so that the It produces a current thermal effect, fuses the tissue, and if the temperature protection device 8 detects that the temperature of the cutter head exceeds the set value, the circuit protection device will be disconnected. The low-power button (the first control button 73) is activated, and the current is transmitted to the micro-heating device 33 by the built-in power supply 6, the large resistor (the first resistor 71), and the temperature protection device 8, so that it produces a current heating effect, tissue coagulation, and if the temperature is protected The device 8 detects that the temperature of the cutter head exceeds the set value, and will disconnect the circuit protection device.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (4)

1. Hand-held type hot melt sword, its characterized in that: the gun handle type hot-melting tool comprises a gun handle type shell with a built-in power supply, wherein a tool handle is installed at the front end of the shell, an openable and closable hot-melting tool bit is arranged at the end part of the tool handle, an adjusting roller is rotatably installed on the shell and controls the tool handle and the hot-melting tool bit to rotate, a trigger is hinged to the shell and controls the opening size of the hot-melting tool bit;

the hot melt tool bit includes tool bit and lower tool bit, be provided with miniature device that generates heat on the tool bit down, miniature device that generates heat with built-in power connects through the wire and forms the hot melt return circuit, it has strong and weak adjusting device of electric current and temperature protection device to concatenate on the hot melt return circuit.

2. The hand-held hot melt knife of claim 1, wherein: and an anti-adhesion pressing strip is arranged on the upper tool bit.

3. The hand-held hot-melt knife of claim 1 or 2, wherein: the current intensity adjusting device comprises a first resistor and a second resistor which are arranged in parallel, and the resistance values of the first resistor and the second resistor are different; the first resistor is connected with a first control button in series, and the second resistor is connected with a second control button in series.

4. The hand-held hot melt knife of claim 3, wherein: the first control button and the second control button are both arranged on the upper portion of the trigger.

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