Multifunctional low-temperature plasma knife

Abstract

The multifunctional low-temperature plasma knife comprises a wire, a grip, a fixed connecting plate, a limiting sleeve, an insulating protective sleeve, a knife head, a sliding control tube, a sliding limiting clamping shaft, a reset spring and a limiting clamping plate, the wire is fixedly connected to the tail end of the grip, the fixed connecting plate is fixedly connected to the front end of the grip, and the limiting clamping plate is fixedly connected to the tail end of the grip. And the limiting sleeve is fixedly connected to the front end of the fixed connecting plate. In the using process of the low-temperature plasma knife, bone wax added into the adding pipe can be conveniently added to the knife head, so that the low-temperature plasma knife can achieve the rapid hemostasis effect when bone bleeding occurs, tissue ablation and cutting can be achieved through the low-temperature plasma knife, meanwhile, blood in small blood vessels can be coagulated through plasmas, and therefore the blood in the small blood vessels can be rapidly removed. The device is simple in structure, convenient to use, capable of achieving the hemostasis effect, capable of stopping bone bleeding and convenient to control and use in the use process, bone wax can be automatically and conveniently added, and the treatment efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plasma knife, concretely is a multifunctional low temperature plasma knife. BACKGROUND

[0002] With the development of spine minimally invasive surgery in recent years, UBE (single side double channel endoscope) surgery has become an important means of spine minimally invasive treatment of spinal disorders, and it is gradually widely suitable for intervertebral disc herniation, spinal stenosis and other minimally invasive surgeries that need to decompress bony structure (the surgery is a continuous water flushing environment), but the development of hemostatic equipment for spine minimally invasive surgery is lagging behind the surgery, when the bony structure needs to be decompressed, the bone surface often bleeds, the ordinary plasma knife can coagulate the blood vessels of soft tissue, but the blood vessels of the bone nourishing hole are thin, and the heat conduction of the bone is poor in the water environment, so the effect of the conventional plasma knife coagulation is not good. The effect of bone surface bleeding is poor, which not only interferes with the visual field in the operation and affects the safety of the operation, but also because the hemostasis is not complete during the operation, hematoma is formed after the operation, which compresses the spinal cord nerve and causes functional disorders and even paralysis in patients, which is not an isolated case. Especially for cervical and thoracic spine surgery, because there is no effective hemostatic means during the operation, the water pressure has to be increased to achieve the purpose of hemostasis, and because the water pressure is too high, spinal cord compression occurs, and even fatal cases such as brain herniation also occur! Therefore, it has practical clinical significance to develop a minimally invasive instrument for bone surface hemostasis. The applicant is inspired by the use of bone wax hemostasis in open surgery, and skillfully uses the heating function of the existing plasma knife to melt the bone wax, which changes cold when it meets water and is pushed to coagulate and block the bleeding point on the bone surface. When the bleeding point cannot be clearly determined or is difficult to stop bleeding during the operation, a large amount of bone wax can also be pushed to form a "dam" to block the bleeding from the visual field. This is a significant improvement in spine minimally invasive hemostasis technology. The low temperature plasma knife converts electrical energy into the energy of plasma through a specific device and electrode under the action of high temperature or strong electric field, forms plasma composed of ions, electrons and neutral particles, and has good electrical conductivity and energy transmission characteristics. When the plasma contacts the tissue, its energy can break the molecular bonds in the tissue cells, making the tissue rapidly decompose and gasify, thereby achieving ablation and cutting of the tissue. At the same time, the plasma can also coagulate the blood in small blood vessels to achieve the effect of hemostasis.

[0003] In surgical operation, especially orthopedic open operation, bone surface bleeding often occurs, and using bone wax to stop bleeding is a common way of stopping bleeding, but in the minimally invasive surgery of orthopedics, there is a lack of tools for carrying and using bone wax. Low temperature plasma knife has been widely used in surgery, which has the functions of cutting and coagulating blood, but the existing low temperature plasma knife does not have the function of conveniently adding bone wax, and cannot meet the needs of cutting, coagulating blood and convenient hemostasis at the same time in the operation. The traditional way of adding bone wax is relatively cumbersome, and needs to rely on additional tools, and uneven distribution of bone wax is easy to occur in the operation process, which affects the hemostatic effect. Therefore, a multifunctional low temperature plasma knife is needed to solve the above problems. SUMMARY

[0004] The utility model discloses a multifunctional low temperature plasma knife to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A multifunctional low temperature plasma knife, including wire, handle, fixed connection board, limit cover, insulating protective sleeve, tool bit, sliding control pipe, sliding limit card axle, reset spring and limit card plate, the wire is fixedly connected in the end of handle, the fixed connection board is fixedly connected in the front end of handle, the limit cover is fixedly connected in the front end of fixed connection board, the insulating protective sleeve is fixedly connected in the front end of limit cover, the tool bit is slidably arranged in the inside of insulating protective sleeve, the sliding control pipe is fixedly connected on sliding limit card axle, the limit card plate is evenly fixedly installed on sliding limit card axle, the sliding limit card axle is slidably connected in the inside of handle through limit card plate, the reset spring is arranged between handle and sliding limit card axle, and the reset spring is arranged in the inside of handle, and the front end of insulating protective sleeve is fixedly installed with adding pipe.

[0007] Preferably, the front end of the handle is fixedly installed with a first control barrier column on both sides, and the sliding control pipe is fixedly installed with a second control barrier column on both sides.

[0008] Preferably, the end of the tool bit is connected with the middle part of the front end of the sliding control pipe.

[0009] Preferably, the inside of the adding pipe is evenly fixedly installed with an elastic connecting piece, and the elastic connecting piece is fixedly connected with an arc chuck.

[0010] Preferably, the arc chuck is evenly provided with an adding groove.

[0011] Preferably, the tool bit is located between the arc chucks, and the first control barrier column and the second control barrier column are both provided with anti-skid grooves.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The bone wax added into the adding pipe can be conveniently added to the cutter head, so that the low-temperature plasma cutter can also realize rapid hemostasis when the bone bleeds, so that the device can realize ablation and cutting of tissues, and the plasma can also coagulate blood in small blood vessels to achieve hemostasis effect, and can also perform hemostasis on bone bleeding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a schematic diagram of the main body three-dimensional structure of the utility model;

[0015] Fig. 2 It is a schematic diagram of the main body side view three-dimensional structure of the utility model;

[0016] Fig. 3 It is a schematic diagram of the end structure of the insulating protective sleeve of the utility model.

[0017] In the figure: 1-wire, 2-grip, 3-first control barrier column, 4-fixed connecting plate, 5-second control barrier column, 6-limiting sleeve, 7-insulating protective sleeve, 8-cutter head, 9-sliding control pipe, 10-sliding limiting clamp shaft, 11-reset spring, 12-limiting clamp plate, 13-adding pipe, 14-elastic connecting sheet, 15-arc-shaped chuck, 16-adding groove. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] For example, Figs. 1-3As shown, the utility model provides an embodiment: a multifunctional low temperature plasma knife, including wire 1, handle 2, fixed connecting plate 4, limit sleeve 6, insulating protective sleeve 7, tool bit 8, sliding control pipe 9, sliding limit card axle 10, reset spring 11 and limit card plate 12. Wire 1 is fixedly connected in the end of handle 2, fixed connecting plate 4 is fixedly connected in the front end of handle 2, limit sleeve 6 is fixedly connected in the front end of fixed connecting plate 4, insulating protective sleeve 7 is fixedly connected in the front end of limit sleeve 6, and tool bit 8 is slidably arranged in the inside of insulating protective sleeve 7. Sliding control pipe 9 is fixedly connected on sliding limit card axle 10, and limit card plate 12 is evenly fixedly installed on sliding limit card axle 10, and sliding limit card axle 10 is slidably connected in the inside of handle 2 through limit card plate 12. Reset spring 11 is arranged between handle 2 and sliding limit card axle 10, and reset spring 11 is arranged in the inside of handle 2. The front end of insulating protective sleeve 7 is fixedly installed with adding pipe 13.

[0020] The electrode is the core component of the tool bit 8, which is usually made of metal materials such as stainless steel, tungsten, copper, etc., and can be divided into emitting electrodes and loop electrodes. The emitting electrode is responsible for releasing radio frequency energy to generate plasma under the action of electrolyte between the tissue, and the loop electrode is used to form a current loop to ensure the effective transmission and safe use of radio frequency energy. The button provided on the handle 2 is used to control the working mode, energy output size, tool bit movement and other functions of the low temperature plasma knife, which facilitates the doctor to flexibly operate according to the actual needs during the operation. The wire 1 is usually made of multiple copper wires or other materials with good conductivity, which is used to connect the plasma knife with the main machine to transmit radio frequency energy and control signals, so that the tool bit 8 can work normally according to the operation instructions of the doctor. When the plasma knife is used with an endoscope, the corresponding specifications can be prepared according to the size of the endoscope.

[0021] The first control barrier column 3 is fixedly installed on both sides of the front end of the handle 2, and the second control barrier column 5 is fixedly installed on both sides of the sliding control pipe 9, so that the sliding limit card axle 10 can be conveniently and stably controlled to stretch out and retract in the handle 2.

[0022] The end of the tool bit 8 is connected with the middle part of the front end of the sliding control pipe 9 to control the stretching and retraction of the tool bit 8.

[0023] The elastic connecting pieces 14 are evenly fixedly installed in the inside of the adding pipe 13, and the arc clamping chuck 15 is fixedly connected on the elastic connecting pieces 14.

[0024] The adding grooves 16 are evenly and penetratively formed on the arc clamping chuck 15.

[0025] The tool bit 8 is located between the arc clamping chucks 15, and the anti-skid grooves are arranged on the first control barrier column 3 and the second control barrier column 5.

[0026] The handgrip 2 can control the cutter head 8 precisely during use, and the first control barrier column 3 and the second control barrier column 5 can make the sliding control tube 9 compress the reset spring 11 in the interior of the handgrip 2 to extend and retract, so as to control the cutter head 8 to reciprocate in the interior of the insulation protective sleeve 7 and the adding tube 13, so that the bone wax stored in the interior of the adding tube 13 can be uniformly distributed on the cutter head 8 for use, and the arc-shaped chuck 15 is uniformly distributed in the interior of the adding tube 13 through the elastic connecting piece 14, and the adding groove 16 is uniformly and penetratively arranged on the arc-shaped chuck 15, so that the bone wax can be firmly arranged in the interior of the adding tube 13 through the arc-shaped chuck 15. When the cutter head 8 extends and retracts in the interior of the adding tube 13, the uniformly distributed arc-shaped chuck 15 is extruded, and the elastic connecting piece 14 can be deflected, so that the arc-shaped chuck 15 extrudes the bone wax distributed between the arc-shaped chuck 15 and the adding tube 13, so that the bone wax is overflowed from the adding groove 16 to fully contact the cutter head 8 to realize adding, so that the low-temperature plasma knife can be normally and conveniently used, and the bone wax can be conveniently and quickly added on the cutter head 8 according to the use requirement during use.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multifunctional low-temperature plasma knife comprising a lead wire (1), a handle (2), a fixed connecting plate (4), a limiting sleeve (6), an insulating protective sleeve (7), a knife head (8), a sliding control tube (9), a sliding limiting shaft (10), a return spring (11) and a limiting clamping plate (12), characterized in that: The lead wire (1) is fixedly connected at the end of the handle (2), the fixed connection plate (4) is fixedly connected at the front end of the handle (2), the limiting sleeve (6) is fixedly connected at the front end of the fixed connection plate (4), the insulating protective sleeve (7) is fixedly connected at the front end of the limiting sleeve (6), the cutter head (8) is slidingly arranged in the insulating protective sleeve (7), the sliding control tube (9) is fixedly connected on the sliding limiting clamping shaft (10), the limiting clamping plate (12) is uniformly fixedly installed on the sliding limiting clamping shaft (10), the sliding limiting clamping shaft (10) is slidingly clamped in the handle (2) through the limiting clamping plate (12), the reset spring (11) is arranged between the handle (2) and the sliding limiting clamping shaft (10), and the reset spring (11) is arranged in the handle (2), and the front end of the insulating protective sleeve (7) is fixedly installed with the adding pipe (13).

2. The multi-functional cryo-knife of claim 1, wherein: The first control barrier column (3) is fixedly installed on both sides of the front end of the handle (2), and the second control barrier column (5) is fixedly installed on both sides of the sliding control tube (9).

3. The multi-functional cryo-plasma knife according to claim 2, wherein: The end of the cutter head (8) is connected with the middle of the front end of the sliding control tube (9).

4. The multi-functional cryo-knife of claim 3, wherein: The elastic connecting piece (14) is uniformly fixedly installed in the adding pipe (13), and the arc chuck (15) is fixedly connected on the elastic connecting piece (14).

5. The multi-functional cryo-plasma knife according to claim 4, wherein: The adding groove (16) is uniformly and penetratingly formed on the arc chuck (15).

6. The multi-functional cryo-knife of claim 5, wherein: The cutter head (8) is located between the arc chucks (15), and the first control barrier column (3) and the second control barrier column (5) are provided with anti-skid grooves.

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