CN212281618U

CN212281618U - Hand-held hot melting knife

Info

Publication number: CN212281618U
Application number: CN202022178074.8U
Authority: CN
Inventors: 叶道明; 张小荣; 褚楚; 李志勇
Original assignee: Sunshine Medical Equipment Co ltd
Current assignee: Sunshine Medical Equipment Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-05
Anticipated expiration: 2030-09-29

Abstract

The utility model belongs to the technical field of medical appliances, in particular to a handheld hot melting knife, which comprises a gun handle type shell with a built-in power supply, wherein a knife handle is arranged at the front end of the shell, the end part of the knife handle is provided with a hot melting knife head, and an adjusting roller is rotatably arranged on the shell; 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. The utility model does not need a high-frequency power generator and a connecting wire, and is convenient to use; the current does not pass through the human body during the operation, only passes through the interior of the micro heating device on the tool bit, has no influence on a patient using the cardiac pacemaker, and does not need to use a negative plate; and the current can be accurately limited by controlling the size of the resistor, so that the resistor can generate quantitative heat energy, and the thermal damage is relatively small.

Description

Hand-held hot melting knife

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to hand-held type hot melt sword.

Background

The current surgical devices for cutting hemostasis are mainly divided into two categories: one type uses mechanical energy to achieve a cutting hemostasis effect, wherein the representative is an ultrasonic knife; another type of device uses high frequency current to generate heat through tissue to achieve hemostatic effect, such as bipolar coagulation knife, monopolar electric hook, monopolar electric knife, etc. The surgical machines created by using these two principles have advantages and disadvantages.

The use conditions in the current market are as follows: for major operations with long time and great difficulty, the bipolar coagulation knife and the ultrasonic knife are used relatively more, small operations with short time and small difficulty are used relatively more, and the monopolar electric hook, the monopolar electric knife and the like are used relatively more.

Defects of the ultrasonic blade:

1) the cutting steps are multiple (three steps: closing, excitation, resetting), slow cutting speed.

2) Mechanical vibration has tissue splatter, especially tumor tissue has the risk of planting tumor tissue in a splattering manner.

3) Are vulnerable to breakage when the head of the pliers is struck by hard material or tissue (e.g., bone back grasping pliers, etc.).

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

5) The hemostatic effect is not good.

6) The blood can not be coagulated in the cutting process of the liver tissue.

7) A high frequency power generator is required.

The defects of the single-pole electric hook and the electric knife:

1) large heat value, and easy heat damage to peripheral tissues.

2) Not applicable to endoscopic surgery.

3) The negative plate needs to be used and has the risk of thermal burn.

4) A high frequency power generator is required.

Defects of bipolar coagulation knives:

1) some of the procedures are difficult to make an incision or require a certain skill of manipulation.

2) It cannot be cut by back-cut method.

3) The smog is slightly bigger in the use process, and the visual field is influenced.

4) The tool bit has certain adhesion condition in the use.

5) A high frequency power generator is required.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a need not high frequency power generator and connecting wire, control convenient to use, be suitable for the hand-held type hot melt sword of laparoscopic surgery and open operation simultaneously.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: the handheld hot melting knife comprises a gun handle type shell with a built-in power supply, wherein a knife handle is installed at the front end of the shell, an openable and closable hot melting knife head is arranged at the end part of the knife handle, an adjusting roller is rotatably installed on the shell and controls the rotation of the knife handle and the hot melting knife head, a trigger is hinged to the shell and controls the opening size of the hot melting knife head;

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.

As a preferred technical scheme, an anti-adhesion pressing strip is arranged on the upper cutter head.

As a preferred technical scheme, 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.

Preferably, the first control button and the second control button are both disposed on an upper portion of the trigger.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has at least:

(1) the utility model discloses a portable power source with the power assembly in the handle, need not high frequency power generator and connecting wire, convenient to use is suitable for laparoscopic surgery and open operation simultaneously.

(2) The electric current does not pass through the human body during the operation, only passes through from the inside of the miniature device that generates heat on the tool bit, does not have any influence to the patient that uses cardiac pacemaker, more need not to use the negative plate, reduces the risk, practices thrift the cost simultaneously.

(3) The manual design is adopted, and the roller and the trigger are matched, so that the operation is simple, and the methods such as stoma making, back cutting and the like which cannot be realized or are difficult to realize by the bipolar coagulation cutter can be realized.

(4) In the use process, the current can be accurately limited by controlling the size of the resistor so that the resistor can generate quantitative heat energy, so that the heat damage is relatively small. The smog that produces in the working process is less, does not influence the field of vision.

(5) The anti-adhesion material is arranged at the position of the cutter head, so that the condition of adhesion tissues can be effectively reduced. The side cutting coagulation effect is good, and the preparation can be used for liver surgery.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

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

FIG. 2 is a schematic view of the hot-melt cutter head in an expanded state;

FIG. 3 is a schematic view of the hot-melt cutter head in a closed state;

fig. 4 is a control schematic diagram of an embodiment of the present invention;

fig. 5 is a reference diagram of the usage status of the embodiment of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Examples

As shown in fig. 1, the handheld hot-melting knife comprises a gun handle type shell 1 with a built-in power supply, wherein the shell 1 is provided with a holding part, namely a handle 11, a slender knife handle 2 is installed at the front end of the shell 1, an openable and closable hot-melting knife head 3 is arranged at the end part of the knife handle 2, an adjusting roller 4 is installed on the shell 1 in a rotating manner, the adjusting roller 4 controls the rotation of the knife handle 2 and the hot-melting knife head 3, a trigger 5 is hinged on the shell 1, and the opening size of the hot-melting knife head 3 is controlled by the trigger 5 through a pull wire; the manual design is adopted, and the adjusting roller and the trigger are matched, so that the operation is simple, and the methods such as stoma making, back cutting and the like which cannot be realized or are difficult to realize by the bipolar coagulation knife can be realized.

Referring to fig. 2 to 5, the hot-melting scalpel head 3 includes an upper scalpel head 31 and a lower scalpel head 32, the lower scalpel head 32 is provided with a micro heating device 33 (such as a heat conducting wire, etc.), current does not pass through a human body during surgery, and only passes through the interior of the micro heating device 33 on the scalpel head, so that no influence is caused to a patient using the cardiac pacemaker, no negative plate is required, risks are reduced, and cost is saved; the anti-adhesion pressing strip 34 is arranged on the upper cutter head, so that the condition of adhesion tissues can be effectively reduced, the side cutting coagulation effect is good, and the anti-adhesion device can be used for liver operations. The micro heating device 33 is connected with the built-in power supply 6 through a lead to form a hot melting loop, and the hot melting loop is connected with the current intensity adjusting device 7 and the temperature protection device 8 in series. The portable built-in power supply is adopted, the power supply is assembled in the handle, a high-frequency power supply generator and a connecting wire are not needed, the operation and the use are convenient, and the portable built-in power supply can be suitable for endoscopic surgery and open surgery.

The current intensity adjusting device 7 includes a first resistor 71 and a second resistor 72 which are arranged in parallel, the first resistor 71 is connected in series with a first control button 73, 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 small power button, and the second control button 74 is a large power button. The first control button 73 and the second control button 74 are both arranged on the upper part of the trigger 5, so that flexible control in the operation process is facilitated. Therefore, the current can be accurately limited by controlling the resistance to generate quantitative heat energy during the use process, so that the thermal damage is relatively small. The smog that produces in the working process is less, does not influence the field of vision.

Referring to fig. 4, the working principle of the present invention is as follows: the high-power button (the second control button 74) is activated, the current is transmitted to the micro heating device 33 through the built-in power supply 6, the small resistor (the second resistor 72) and the temperature protection device 8, so that the micro heating device generates a current heat effect to fuse tissues, and if the temperature protection device 8 detects that the temperature of the cutter head exceeds a set value, a circuit can be disconnected to protect the equipment. The small-power button (the first control button 73) is excited, the current is transmitted to the micro heating device 33 through the built-in power supply 6, the large resistor (the first resistor 71) and the temperature protection device 8, so that the micro heating device generates current heat effect and tissue coagulation, and if the temperature protection device 8 detects that the temperature of the cutter head exceeds a set value, a circuit can be disconnected to protect the equipment.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

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;

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.