High-frequency incision knife

Abstract

The utility model discloses a high-frequency incision knife, and relates to the technical field of medical equipment. The device comprises a handle, a pull ring is installed on the surface of the handle, and the top of the pull ring is communicated with a three-way liquid injection valve. An adjusting assembly is arranged on one side of the handle and comprises a rotating joint, the rotating joint is fixedly connected to one end of the handle, an outer sheath tube is arranged on one side of the rotating joint, a cutter bar is arranged in the outer sheath tube, and the rotating angle of the cutter bar is adjusted through the adjusting assembly; a power supply assembly is arranged on one side of the handle. Through the arrangement of the adjusting assembly, the rotating angle of the cutter bar can be adjusted, meanwhile, the conducting ring is additionally arranged at the front end of the ceramic base, the conducting area is remarkably increased, and therefore faster and more efficient electric coagulation hemostasis is achieved, the operation efficiency is greatly improved, the operation time is shortened, two power connectors are designed and can be switched back and forth and conducted independently, and the practicability is high. The safety of the operation is improved, and the injury risk in the operation process is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially, relate to a high frequency incision knife. BACKGROUND

[0002] Endoscopic mucosal dissection is a minimally invasive endoscopic technique for treating early gastrointestinal tumors (such as early cancer or adenoma), ESD is operated through an endoscope device, aiming to completely strip the lesion tissue from the submucosal layer, compared with traditional endoscopic resection (such as EMR, endoscopic mucosal resection), ESD is more difficult in technical difficulty, but can provide higher resection integrity and reduce the risk of postoperative recurrence. Its advantage lies in precise removal of larger or deeper lesions, avoiding more invasive surgical procedures, in order to ensure the accuracy of the whole process, continuous visual clarity management is needed during the operation, usually with the help of liquid injection port for liquid injection, helping to flush the operation site, maintain clear visual effect, avoid interference in operation. Through these precise technical means, ESD surgery can effectively complete the resection of lesion tissue while reducing patient pain.

[0003] The current high-frequency incision knife relies on the contact area of the knife rod and the tissue for coagulation, and in larger lesions, due to the limited contact area of the electrode and the tissue, the conduction efficiency of the current is insufficient, resulting in weakened coagulation effect, which not only increases the risk of intraoperative bleeding, but also requires longer time to complete resection, consumes more operation time and is very inconvenient for operation with larger incisions.

[0004] Therefore, we provide a high-frequency incision knife to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high-frequency incision knife, increase head coagulation area, solve the problem that the coagulation contact area of high-frequency incision knife in prior art is limited by knife rod, resulting in low coagulation efficiency.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions.

[0007] The utility model discloses a high frequency incision knife, including handle, the handle surface is installed with the pull ring, the pull ring top intercommunication has the three way liquid injection valve, handle one side is provided with the adjusting assembly, the adjusting assembly includes the swivel joint, the swivel joint fixedly connected in handle one end, the swivel joint one side is provided with the outer sheath tube, the outer sheath tube is provided with the sword bar in the inside, through the swivel handle drive sword bar and carry out angle adjustment, handle one side is provided with the power supply component, the power supply component includes the ceramic seat, the ceramic seat is installed in the outer sheath tube one end, the ceramic seat is installed with the conducting ring in the inside, the outer sheath tube is provided with the conducting wire in the inside, the pull ring and swivel joint top all intercommunication has the protection tube, the protection tube inside screw thread connection has the power connector, through two power supply components to sword bar and conducting ring carry out separate power supply.

[0008] The utility model further sets up, handle inside installation has the boost pipe, boost pipe inside setting has the pull rope.

[0009] The utility model further sets up, swivel joint one side sets up the butt joint, butt joint other end with the outer sheath tube intercommunication.

[0010] The utility model further sets up, swivel joint surface and the nut inner wall are connected through the thread.

[0011] The utility model further sets up, sword bar one end penetrates ceramic seat and is fixedly connected with the butt joint pipe, and the pull rope one end is fixedly connected with the butt joint pipe.

[0012] The utility model further sets up, the outer sheath tube inside installation has the inner tube, and the inner tube one end with three way liquid injection valve intercommunication.

[0013] The utility model further sets up, boost pipe and pull rope one end all penetrate butt joint, and three way liquid injection valve both ends all are fixedly connected with the sealing ring.

[0014] The utility model further sets up, the butt joint pipe top is set up and passes the slot mouth, and the pull rope and boost pipe one end all pass the sealing ring.

[0015] The utility model further sets up, the outer sheath tube surface installation has the sheath pipe, butt joint and inner tube fixed connection.

[0016] The utility model further sets up, conducting wire one end is fixedly connected with the conducting ring, and conducting wire other end is fixedly connected with the power connector.

[0017] The utility model has the following beneficial effects.

[0018] 1. The utility model discloses a can adjust the rotation angle of the cutter bar through the setting of adjusting assembly, and increases the conducting ring at the front end of ceramic seat simultaneously, significantly increases the conducting area to realize more fast, efficient electrocoagulation hemostasis, improves surgical efficiency greatly, reduces the operation time, designs two power connectors, can switch back and forth, individual conduction improves the safety of operation, effectively reduces the damage risk in the operation process.

[0019] 2. The utility model discloses a through the setting of power supply component, the cutter bar and conducting ring are powered respectively through two power supply components, increase the conducting ring at the front end of high frequency incision knife ceramic seat, realize more fast, efficient electrocoagulation hemostasis through the increase of conducting area, and the electrocoagulation process is not only fast but also efficient, can realize accurate hemostasis at the incision site, reduces the bleeding amount of patient, and is helpful to the clear vision to the doctor continues to carry out the subsequent operation.

[0020] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above at the same time. DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will introduce the drawing needed to be used in the embodiment briefly.

[0022] Figure 1 It is a structure perspective view of a high frequency incision knife.

[0023] Figure 2 It is a sectional view of handle and pull ring in a high frequency incision knife.

[0024] Figure 3 It is a partial sectional view of rotating joint and outer sheath tube in a high frequency incision knife.

[0025] Figure 4 It is a connecting schematic view of outer sheath tube and cutter bar in a high frequency incision knife.

[0026] Figure 5 It is a partial sectional view of outer sheath tube and cutter bar in a high frequency incision knife.

[0027] Figure 6 It is an explosion schematic view of handle surface structure in a high frequency incision knife.

[0028] Figure 7 It is a partial sectional view of rotating joint, protection tube and nut in a high frequency incision knife.

[0029] Figure 8 It is a structure rear view of a high frequency incision knife.

[0030] In the drawing: 1, handle; 2, pull ring; 3, three-way liquid injection valve; 4, rotary joint; 5, outer sheath tube; 6, cutter bar; 7, ceramic seat; 8, conductive ring; 9, conductive wire; 10, protective tube; 11, power connector; 12, booster tube; 13, pull rope; 14, butt joint; 15, nut; 16, butt joint tube; 17, inner tube; 18, sealing ring; 19, sheath tube. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be described below with reference to the drawings in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0032] Embodiment one

[0033] Please refer to Figures 1-8 The utility model discloses a high frequency incision cutter, including handle 1, handle 1 surface installs pull ring 2, and pull ring 2 top intercommunication has three -way liquid injection valve 3;Handle 1 one side is provided with adjusting assembly, and adjusting assembly includes rotary joint 4, and rotary joint 4 fixed connection in handle 1 one end, and rotary joint 4 one side is provided with outer sheath tube 5, and outer sheath tube 5 inside is provided with cutter bar 6, and the rotation angle of cutter bar 6 is adjusted through adjusting assembly;Handle 1 one side is provided with power supply assembly, and power supply assembly includes ceramic seat 7, and ceramic seat 7 installs in outer sheath tube 5 one end, and ceramic seat 7 inside is installed with conductive ring 8, and outer sheath tube 5 inside is provided with conductive wire 9, and pull ring 2 and rotary joint 4 top all intercommunication has protective tube 10, and protective tube 10 inside screw thread connection has power connector 11.

[0034] Specifically: pull ring 2 and three-way liquid injection valve 3 are connected through adhesive, ultrasonic welding, buckle and other modes, pull ring 2 is sleeved on handle 1, and rotary joint 4 is combined together with handle 1 through interference, and there is a gap between rotary joint 4 and handle 1, can be realized cutter head 360 ° rotation through rotating handle 1, conductive wire 9 passes through the small hole of outer sheath tube 5, and the distal end is connected through laser welding with conductive ring 8, and the proximal end is pressed tightly with power connector 11 through the hole on rotary joint 4, as Figure 4 The power connector 11 at the top of the rotary joint 4 is connected with the conductive ring 8 through the conductive wire 9, which plays a role in stable power supply. The power connector 11 at the top of the pull ring 2 can supply power to the cutter bar 6, which plays a role in group power supply and improves the stability of power supply.

[0035] Embodiment two

[0036] Please refer to Figures 1-8Based on Embodiment 1, a booster tube 12 is installed inside the handle 1, and a pull rope 13 is installed inside the booster tube 12. A coupling 14 is provided on one side of the rotary joint 4, and the other end of the coupling 14 is connected to the outer sheath tube 5. A nut 15 is fitted on the surface of the coupling 14, and the surface of the rotary joint 4 is connected to the inner wall of the nut 15 by threads. One end of the knife bar 6 passes through the ceramic seat 7 and is fixedly connected to the coupling tube 16. One end of the pull rope 13 is fixedly connected to the coupling tube 16. An inner tube 17 is installed inside the outer sheath tube 5, and one end of the inner tube 17 is connected to the three-way injection valve 3.

[0037] Specifically: such as Figure 6 As shown, the push tube 12 has a groove, and the left and right ends of the three-way injection valve 3 are bonded with sealing rings 18. The pull rope 13 and the push tube 12 pass through the sealing rings 18, and the tail is connected by laser welding to form a seal. The injection liquid enters through the groove on the push tube 12 and the channel of the inner tube 17 through the three-way injection valve 3. The power connector 11 is connected to the push tube 12 by threaded compression.

[0038] Example 3

[0039] Please see Figures 1-8 Based on Embodiment 1, one end of the booster tube 12 and the pull rope 13 both pass through the connector 14, and both ends of the three-way injection valve 3 are fixedly connected with sealing rings 18. The top of the connector tube 16 is provided with a through slot, and one end of the pull rope 13 and the booster tube 12 both pass through the sealing rings 18. A protective sleeve 19 is installed on the surface of the outer sheath tube 5. The connector 14 and the inner tube 17 are fixedly connected. One end of the conductive wire 9 is fixedly connected to the conductive ring 8, and the other end of the conductive wire 9 is fixedly connected to the power connector 11.

[0040] Specifically: such as Figure 6 As shown, the proximal end of the coupling 14 is connected to the rotary joint 4 by an interference fit, and the distal end is connected to the inner tube 17 by an interference fit. The booster tube 12 and the pull rope 13 pass through the coupling 14; Figure 5 As shown, the shank 6 passes through the ceramic seat 7 and is connected to the far end of the connecting tube 16 by welding. The pull rope 13 is connected to the near end of the connecting tube 16 by laser welding. The connecting tube 16 has a through-hole. The inner tube 17 is fitted onto the connecting tube 16 by interference fit to form an injection channel. The ceramic seat 7 is connected to the large hole of the outer sheath tube 5 by interference fit.

[0041] The working principle of the utility model is that: in the process of endoscopic mucosal dissection, the doctor connects the electric knife connector to the power connector 11 on the handle 1, the current passes through the power connector 11, the pull rope 13, the butt joint pipe 16 and the knife rod 6, forms the current path, and finally reaches the electrode part of the knife rod 6, the electrode contacts the mucosa tissue of the lesion, at this time, the high frequency current generates heat at the electrode part of the electric knife rod 6, and the heat effect makes the tissue protein denaturation and dehydration, so that cutting is realized, the cutting process of the electric knife is not only fast and effective, but also can reduce the damage of the tissue, in the cutting process, the electrode of the electric knife needs to keep accurate contact with the lesion tissue to ensure the accuracy of resection, and meanwhile, too much heat damage to the surrounding normal tissue is avoided.

[0042] When electrocoagulation is needed, the electric knife connector is connected to the power connector 11 on the rotary connector 4, the current passes through the conductive wire 9 and the conductive ring 8, when the current is transmitted to the electrode through the conductive ring 8, heat is generated in the contact area, and the heat effect promotes the protein denaturation in the blood vessel, so that the coagulation effect is rapidly achieved, the broken blood vessel is closed, and bleeding is prevented, the electrocoagulation process is not only fast and efficient, but also can realize accurate hemostasis at the incision site, reduce the bleeding amount of the patient, and help clear vision, so that the doctor can continue subsequent operation.

[0043] During the operation, the doctor can hold the rotary connector 4 with one hand, hold the handle 1 and the pull ring 2 with the right hand, adjust the angle of the cutter head by rotating the handle 1 and the pull ring 2 with one hand, and at the same time, the injection liquid can enter the operation site through the three-way injection valve 3, the boost pipe 12, the inner pipe 17, the butt joint pipe 16 and the knife rod 6 channel at any time, the design of the rotary handle 1 allows the doctor to flexibly adjust the angle of the cutter head as needed to adapt to different operation requirements and visual requirements, the doctor can accurately control the position and direction of the cutter head by rotating the handle 1, so that more accurate cutting and operation are realized, especially when endoscopic surgery is performed in narrow and difficult-to-contact parts, the damage to the surrounding tissue can be effectively avoided, and the safety and flexibility of the operation are improved.

[0044] The standard parts used in the utility model can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the control unit, the control circuit of the control unit, which can be realized through simple programming of the person skilled in the art, and belongs to the public knowledge in the field, so the control mode and circuit connection in the utility model are not explained in detail.

[0045] The preferred embodiments disclosed above are only used to help describe the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode described, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the skilled in the art can well understand and utilize the utility model.

Claims

1. A high-frequency cutting knife, comprising a handle (1), characterized in that: A pull ring (2) is installed on the surface of the handle (1), and a three-way injection valve (3) is connected to the top of the pull ring (2). An adjustment component is provided on one side of the handle (1). The adjustment component includes a rotary joint (4). The rotary joint (4) is fixedly connected to one end of the handle (1). An outer sheath tube (5) is provided on one side of the rotary joint (4). A knife bar (6) is provided inside the outer sheath tube (5). The rotation angle of the knife bar (6) is adjusted by the adjustment component. A power supply assembly is provided on one side of the handle (1). The power supply assembly includes a ceramic seat (7), which is installed at one end of the outer sheath tube (5). A conductive ring (8) is installed inside the ceramic seat (7), and a conductive wire (9) is provided inside the outer sheath tube (5). A protective tube (10) is connected to the top of both the pull ring (2) and the rotary joint (4). A power connector (11) is threaded inside the protective tube (10). The two power supply assemblies supply power to the tool bar (6) and the conductive ring (8) respectively.

2. The high-frequency cutting blade according to claim 1, characterized in that: The handle (1) is equipped with a booster tube (12), and the booster tube (12) is equipped with a pull rope (13).

3. The high-frequency cutting blade according to claim 1, characterized in that: The rotary joint (4) is provided with a connector (14) on one side, and the other end of the connector (14) is connected to the outer sheath (5).

4. A high-frequency cutting blade according to claim 3, characterized in that: The surface of the connector (14) is fitted with a nut (15), and the surface of the rotary connector (4) is connected to the inner wall of the nut (15) by threads.

5. A high-frequency cutting blade according to claim 2, characterized in that: One end of the blade holder (6) passes through the ceramic seat (7) and is fixedly connected to the connecting tube (16), and one end of the pull rope (13) is fixedly connected to the connecting tube (16).

6. A high-frequency cutting blade according to claim 1, characterized in that: The outer sheath (5) has an inner tube (17) installed inside, and one end of the inner tube (17) is connected to the three-way injection valve (3).

7. A high-frequency cutting blade according to claim 2, characterized in that: The booster tube (12) and the pull rope (13) both pass through the connector (14) at one end, and the three-way injection valve (3) is fixedly connected to both ends with sealing rings (18).

8. A high-frequency cutting blade according to claim 5, characterized in that: The top of the connecting pipe (16) is provided with a through slot, and one end of the pull rope (13) and the booster pipe (12) both pass through the sealing ring (18).

9. A high-frequency cutting blade according to claim 7, characterized in that: The outer sheath (5) is fitted with a protective sleeve (19), and the connector (14) and the inner tube (17) are fixedly connected.

10. A high-frequency cutting blade according to claim 1, characterized in that: One end of the conductive wire (9) is fixedly connected to the conductive ring (8), and the other end of the conductive wire (9) is fixedly connected to the power connector (11).

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