A bipolar scissor head device and working method thereof

Abstract

The present invention relates to a bipolar scissor head device and a working method thereof, belonging to the field of medical devices. The present invention comprises a fixed blade mechanism, a movable blade mechanism, a ceramic frame and a pin shaft, wherein the ceramic frame is mounted on the fixed blade mechanism, and the movable blade mechanism is mounted on the fixed blade mechanism and the ceramic frame through a pin shaft. When the bipolar scissor head device is used for surgery, it forms a circuit through the bipolar poles, and the current does not pass through the human body, thereby reducing the risk of overheating and burns of the patient's contact part due to poor contact of the negative plate during use. The two poles are connected to the handle respectively to form a circuit, so that heat diffusion and adjacent damage are reduced accordingly. At the same time, by arranging a toothed structure on the fixed blade, slipping during the operation can be effectively avoided, and the normal operation can be ensured.

Description

Technical Field

[0001] The invention relates to a bipolar scissor head device and a working method thereof, belonging to the field of medical instruments. Background Art

[0002] In the prior art, medical electrocoagulation scissors are divided into monopolar and bipolar types, which are mainly used for shearing and coagulation of human tissues in surgical operations, so as to control and reduce bleeding while separating body tissues. When monopolar scissors are working, the negative electrode needs to be in contact with the human body, and the high-frequency electric energy widely passes through the human body and has a certain impact on the human heart; at the same time, glucose needs to be used as a flushing medium during the operation, and diabetic patients are prone to TURP syndrome, i.e. water intoxication, and the required power is large, the heat diffusion range is large, and the damage to the surrounding tissues of the human body is relatively large. And it is easy to slip during the operation, affecting the normal progress of the operation. In view of this, a bipolar scissors is disclosed in the patent document with application number 201810985289.5. The bipolar scissors in the above-mentioned comparative document lack a toothed structure and have a poor anti-slip effect. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a bipolar scissor head device with a reasonable structural design and a working method thereof.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the bipolar scissors head device has the structural characteristics of comprising a fixed blade mechanism, a movable blade mechanism, a ceramic frame and a pin shaft, the ceramic frame is installed on the fixed blade mechanism, and the movable blade mechanism is installed on the fixed blade mechanism and the ceramic frame through the pin shaft.

[0005] Furthermore, the fixed blade mechanism includes a fixed blade and a fixed blade rack, the fixed blade is fixed on the fixed blade rack, the ceramic rack is mounted on the fixed blade rack, the movable blade mechanism is mounted on the fixed blade rack and the ceramic rack via a pin shaft, and the fixed blade cooperates with the movable blade mechanism.

[0006] Furthermore, the movable blade mechanism comprises a movable blade and a ceramic blade, the movable blade is mounted on the ceramic blade, and the ceramic blade is in contact with the fixed blade mechanism.

[0007] Further, the fixed blade holder is installed at one end of the outer tube; and / or; a polytetrafluoro tube is sheathed on the outer tube.

[0008] Furthermore, the movable blade is connected to one end of the inner rod; and / or the inner rod is sheathed with a polyfluoro tube.

[0009] Furthermore, a tooth structure is provided on the fixed blade.

[0010] Furthermore, a movable blade seat is fixed on the movable blade, a ceramic blade seat is fixed on the ceramic blade, a ceramic sleeve is fixed on the ceramic blade seat, the movable blade seat is installed on the ceramic blade seat, the ceramic sleeve penetrates the movable blade seat, and the pin is installed on the ceramic sleeve.

[0011] Furthermore, the fixed blade is connected to the conductive positive electrode; and / or the fixed blade is made of metal.

[0012] Furthermore, the movable blade is connected to a conductive negative electrode; and / or the movable blade is made of metal.

[0013] Furthermore, the movable blade cooperates with a ceramic blade.

[0014] Another technical purpose of the present invention is to provide a working method of a bipolar scissor head device.

[0015] The above technical objectives of the present invention are achieved through the following technical solutions.

[0016] A working method of a bipolar scissor head device, characterized in that: the working method is as follows:

[0017] An insulating layer, i.e. a ceramic blade, is embedded between the blade edges of the fixed blade and the movable blade. The outer tube and the inner rod are wrapped with a PTFE tube. The ceramic frame is installed on the fixed blade frame. One end of the movable blade is connected to the ceramic frame by a pin shaft and fixed to the fixed blade frame.

[0018] The movable blade and the ceramic blade are provided with a preset hole pin for positioning; the movable blade and the ceramic blade are connected into one piece by a brazing process to realize metal and ceramic connection;

[0019] Under normal circumstances, the fixed blade and the movable blade are insulated due to the ceramic blade in the middle. When human tissue is inserted between the cutting edges (human tissue is a conductor), the two poles conduct current through the human tissue, and the resistance of human tissue is greater than that of metal, which causes the human tissue to heat up and carbonize, while shearing the tissue. The fixed blade has a toothed structure design, which is more suitable for fixing the sheared human tissue to prevent the knife from slipping.

[0020] Compared with the prior art, the present invention has the following advantages: when the bipolar scissors head device is used for surgery, it forms a circuit through the two poles, and the current does not pass through the human body, thereby reducing the risk of overheating and burns of the patient's contact part due to poor contact of the negative plate during use. The two poles are connected to the handle respectively to form a circuit, so that heat diffusion and adjacent damage are reduced accordingly. At the same time, by providing a toothed structure on the fixed blade, slipping during the operation can be effectively avoided, and the normal operation can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front view structure of a bipolar scissor head device according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a bipolar scissor head device according to an embodiment of the present invention.

[0023] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in FIG.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of a bipolar scissor head device according to an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of a bipolar scissor head device according to an embodiment of the present invention.

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the movable blade mechanism according to an embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the exploded structure of the movable blade mechanism according to an embodiment of the present invention.

[0028] In the figure: fixed blade mechanism 1, movable blade mechanism 2, ceramic frame 3, pin 4, outer tube 5, inner rod 6, PTFE tube 7,

[0029] Fixed blade 11, fixed blade holder 12, tooth structure 13,

[0030] Movable blade 21 , ceramic blade 22 , movable blade seat 23 , ceramic blade seat 24 , ceramic shaft sleeve 25 . DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0032] Example

[0033] See also Figures 1 to 7As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0034] The bipolar scissors head device in this embodiment includes a fixed blade mechanism 1, a movable blade mechanism 2, a ceramic frame 3 and a pin 4. The ceramic frame 3 is installed on the fixed blade mechanism 1, and the movable blade mechanism 2 is installed on the fixed blade mechanism 1 and the ceramic frame 3 through the pin 4.

[0035] The fixed blade mechanism 1 in this embodiment includes a fixed blade 11 and a fixed blade holder 12, the fixed blade 11 is fixed on the fixed blade holder 12, a tooth structure 13 is provided on the fixed blade 11, the ceramic holder 3 is mounted on the fixed blade holder 12, the movable blade mechanism 2 is mounted on the fixed blade holder 12 and the ceramic holder 3 through the pin 4, and the fixed blade 11 cooperates with the movable blade mechanism 2. The fixed blade holder 12 is mounted on one end of the outer tube 5; the outer tube 5 is sheathed with a polytetrafluoroethylene tube 7.

[0036] The movable blade mechanism 2 in this embodiment includes a movable blade 21 and a ceramic blade 22. The movable blade 21 is mounted on the ceramic blade 22, and the ceramic blade 22 contacts the fixed blade mechanism 1. The movable blade 21 is connected to one end of the inner rod 6; the inner rod 6 is sheathed with a polytetrafluoroethylene tube 7; the movable blade 21 cooperates with the ceramic blade 22.

[0037] In this embodiment, a movable blade seat 23 is fixed on the movable blade 21, a ceramic blade seat 24 is fixed on the ceramic blade 22, a ceramic sleeve 25 is fixed on the ceramic blade seat 24, the movable blade seat 23 is installed on the ceramic blade seat 24, the ceramic sleeve 25 penetrates the movable blade seat 23, and the pin shaft 4 is installed on the ceramic sleeve 25.

[0038] The fixed blade 11 in this embodiment is connected to the conductive positive electrode; the material of the fixed blade 11 is metal. The fixed blade 11 is connected to the outer tube 5, and the positive electrode connected to the bipolar handle is connected to the positive electrode of the energy generator. The movable blade 21 is connected to the conductive negative electrode; the material of the movable blade 21 is metal. The movable blade 21 is connected to the inner rod 6, and the negative electrode connected to the bipolar handle is connected to the negative electrode of the energy generator.

[0039] Specifically, an insulating layer, namely a ceramic blade 22, is embedded between the cutting edges of the fixed blade 11 and the movable blade 21, the outer tube 5 and the inner rod 6 are wrapped with a polytetrafluoro tube 7, the ceramic frame 3 is installed on the fixed blade frame 12, and one end of the movable blade 21 is connected to the ceramic frame 3 with a pin 4 and fixed to the fixed blade frame 12.

[0040] The movable blade 21 and the ceramic blade 22 are preset with a hole pin for positioning; the movable blade 21 and the ceramic blade 22 are connected to metal and ceramic by brazing. Under normal conditions, the fixed blade 11 and the movable blade 21 are in an insulated state because the ceramic blade 22 separates the two poles. When human tissue is inserted between the cutting edges (human tissue is a conductor), the two poles conduct current through the human tissue, and the resistance of human tissue is greater than that of metal, which causes the human tissue to heat up and carbonize, while shearing the tissue; the fixed blade 11 has a tooth structure 13 design, which is more suitable for fixing the sheared human tissue to prevent the knife from slipping.

[0041] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A bipolar scissor head device, characterized in that: It comprises a fixed blade mechanism (1), a movable blade mechanism (2), a ceramic frame (3) and a pin shaft (4), wherein the ceramic frame (3) is mounted on the fixed blade mechanism (1), and the movable blade mechanism (2) is mounted on the fixed blade mechanism (1) and the ceramic frame (3) via the pin shaft (4); The fixed blade mechanism (1) comprises a fixed blade (11) and a fixed blade frame (12), wherein the fixed blade (11) is fixed on the fixed blade frame (12), the ceramic frame (3) is mounted on the fixed blade frame (12), the movable blade mechanism (2) is mounted on the fixed blade frame (12) and the ceramic frame (3) via a pin shaft (4), and the fixed blade (11) cooperates with the movable blade mechanism (2); The movable blade mechanism (2) comprises a movable blade (21) and a ceramic blade (22), wherein the movable blade (21) is mounted on the ceramic blade (22), and the ceramic blade (22) is in contact with the fixed blade mechanism (1); and / or the movable blade (21) cooperates with the ceramic blade (22); The fixed blade holder (12) is mounted on one end of the outer tube (5), and the movable blade (21) is connected to one end of the inner rod (6); The movable blade (21) is fixed with a movable blade seat (23), the ceramic blade (22) is fixed with a ceramic blade seat (24), the ceramic blade seat (24) is fixed with a ceramic shaft sleeve (25), the movable blade seat (23) is mounted on the ceramic blade seat (24), the ceramic shaft sleeve (25) penetrates the movable blade seat (23), and the pin shaft (4) is mounted on the ceramic shaft sleeve (25); The movable blade (21) and the ceramic blade (22) are connected as one body.

2. The bipolar scissor head device according to claim 1, characterized in that: The outer tube (5) is sheathed with a polytetrafluoroethylene tube (7).

3. The bipolar scissor head device according to claim 1, characterized in that: The inner rod (6) is sheathed with a polytetrafluoroethylene tube (7).

4. The bipolar scissor head device according to claim 1, characterized in that: The fixed blade (11) is provided with a toothed structure (13).

5. The bipolar scissor head device according to claim 1, characterized in that: The fixed blade (11) is connected to a conductive positive electrode; and / or the fixed blade (11) is made of metal.

6. The bipolar scissor head device according to claim 1, characterized in that: The movable blade (21) is connected to the conductive negative electrode; and / or the movable blade (21) is made of metal.

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