High-frequency incision knife

Abstract

The invention 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 communicates 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 quicker 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 invention belongs to the technical field of medical equipment, and in particular relates to a high-frequency incision knife. Background Art

[0002] Endoscopic submucosal dissection is a minimally invasive endoscopic technique used to treat early gastrointestinal tumors (such as early cancer or adenoma). ESD is performed through endoscopic equipment and aims to completely remove the diseased tissue from the submucosal layer. Compared with traditional endoscopic resection (such as EMR, endoscopic submucosal resection), ESD is more technically difficult, but can provide higher resection integrity and reduce the risk of postoperative recurrence. Its advantage is that it can accurately remove larger or deeper lesions, avoiding more invasive surgical operations. In order to ensure the accuracy of the entire process, continuous visual clarity management is required during the operation. Usually, liquid is injected through the injection port to help flush the surgical site, maintain clear vision, and avoid interference during the operation. Through these precise technical means, ESD surgery can effectively complete the task of removing diseased tissue while reducing the patient's pain.

[0003] The electrocoagulation effect of the current high-frequency incision knife depends on the contact area between the knife shaft and the tissue. In the case of lesions with larger areas, the contact area between the electrode and the tissue is limited, and the current conduction efficiency is insufficient, resulting in a weakened electrocoagulation effect. This not only increases the risk of intraoperative bleeding, but also requires longer time to complete the resection, consumes more surgical time, and is very inconvenient to operate with a larger incision.

[0004] To this end, we provide a high-frequency cutting knife to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a high-frequency incision knife, which increases the electrocoagulation area of ​​the head and solves the problem in the prior art that the electrocoagulation contact area of ​​the high-frequency incision knife is limited by the knife rod, resulting in low electrocoagulation efficiency.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention relates to a high-frequency incision knife, comprising a handle, a pull ring is installed on the surface of the handle, and a three-way liquid injection valve is connected to the top of the pull ring; an adjustment component is arranged on one side of the handle, and the adjustment component includes a rotating joint, and the rotating joint is fixedly connected to one end of the handle, an outer sheath is arranged on one side of the rotating joint, and a knife rod is arranged inside the outer sheath, and the angle of the knife rod is adjusted by rotating the handle; a power supply component is arranged on one side of the handle, and the power supply component includes a ceramic seat, and the ceramic seat is installed at one end of the outer sheath, and a conductive ring is installed inside the ceramic seat, and a conductive wire is arranged inside the outer sheath, the pull ring and the top of the rotating joint are both connected to a protective tube, and a power supply connector is threadedly connected to the protective tube, and the knife rod and the conductive ring are respectively powered by two power supply components.

[0008] The present invention is further configured such that a booster tube is installed inside the handle, and a pull rope is arranged inside the booster tube.

[0009] The present invention is further configured such that a docking joint is provided at one side of the rotary joint, and the other end of the docking joint is connected to the outer sheath tube.

[0010] The present invention is further configured such that the surface of the rotary joint is connected to the inner wall of the nut via threads.

[0011] The present invention is further configured such that one end of the knife rod passes through the ceramic seat and is fixedly connected to a butt joint pipe, and one end of the pull rope is fixedly connected to the butt joint pipe.

[0012] The present invention is further configured such that an inner tube is installed inside the outer sheath tube, and one end of the inner tube is connected to a three-way injection valve.

[0013] The present invention is further configured such that the booster tube and one end of the pull rope both pass through the docking joint, and both ends of the three-way injection valve are fixedly connected with sealing rings.

[0014] The present invention is further configured such that a through slot is provided on the top of the butt-joint pipe, and one end of the pull rope and the booster pipe both pass through a sealing ring.

[0015] The present invention is further configured such that a sheath tube is installed on the surface of the outer sheath tube, and the butt joint and the inner tube are fixedly connected.

[0016] The present invention is further configured such that one end of the conductive wire is fixedly connected to the conductive ring, and the other end of the conductive wire is fixedly connected to the power connector.

[0017] The present invention has the following beneficial effects.

[0018] 1. The present invention can adjust the rotation angle of the knife rod by adjusting the setting of the component, and at the same time, add a conductive ring at the front end of the ceramic seat to significantly increase the conductive area, thereby achieving faster and more efficient electrocoagulation hemostasis, greatly improving surgical efficiency, reducing surgical time, and designing two power connectors that can be switched back and forth and conducted separately, thereby improving the safety of the operation and effectively reducing the risk of injury during the operation.

[0019] 2. The present invention provides a power supply component, and supplies power to the knife rod and the conductive ring separately through two power supply components. A conductive ring is added to the front end of the high-frequency incision knife ceramic seat, and faster and more efficient electrocoagulation hemostasis is achieved by increasing the conductive area. The electrocoagulation process is not only fast but also efficient, and can achieve accurate hemostasis at the incision site, reduce the patient's bleeding volume, and help to have a clear field of vision so that the doctor can continue with subsequent operations.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0022] Figure 1 The figure is a structural stereogram of a high-frequency cutting knife.

[0023] Figure 2 A cross-sectional view of a handle and a pull ring in a high-frequency cutting knife.

[0024] Figure 3 The present invention is a partial cross-sectional view of a rotary joint and an outer sheath in a high-frequency incision knife.

[0025] Figure 4 The figure is a schematic diagram of the connection between the outer sheath and the knife rod in a high-frequency incision knife.

[0026] Figure 5 The present invention is a partial cross-sectional view of an outer sheath and a knife rod in a high-frequency incision knife.

[0027] Figure 6 An exploded schematic diagram of the surface structure of the handle of a high-frequency cutting knife.

[0028] Figure 7 The present invention is a partial cross-sectional view of a rotary joint, a protective tube and a nut in a high-frequency cutting knife.

[0029] Figure 8 This is a rear view of the structure of a high-frequency cutting knife.

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

[0031] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1 See also Figure 1-8 The present invention discloses a high-frequency cutting knife, comprising a handle 1, 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 arranged on one side of the handle 1, and the adjustment component comprises a rotary joint 4, and the rotary joint 4 is fixedly connected to one end of the handle 1, an outer sheath 5 is arranged on one side of the rotary joint 4, and a knife rod 6 is arranged inside the outer sheath 5, and the rotation angle of the knife rod 6 is adjusted by the adjustment component; a power supply component is arranged on one side of the handle 1, and the power supply component comprises a ceramic seat 7, and the ceramic seat 7 is installed at one end of the outer sheath 5, and a conductive ring 8 is installed inside the ceramic seat 7, and a conductive wire 9 is arranged inside the outer sheath 5, and the pull ring 2 and the top of the rotary joint 4 are both connected with a protective tube 10, and a power supply connector 11 is threadedly connected inside the protective tube 10.

[0033] Specifically: the pull ring 2 is connected to the three-way injection valve 3 by means of adhesive, ultrasonic welding, snap fasteners, etc. After the pull ring 2 is put on the handle 1, the rotary joint 4 and the handle 1 are combined together by interference fit. There is a gap between the rotary joint 4 and the handle 1, and the knife head can be rotated 360 degrees by rotating the handle 1. The conductive wire 9 passes through the small hole of the outer sheath 5, and the distal end is connected to the conductive ring 8 by laser welding. The proximal end is pressed tightly with the power connector 11 through the hole on the rotary joint 4, such as Figure 4 As shown, the conductive ring 8 is connected to the ceramic seat 7 by welding, and there is ceramic insulation between the knife rod 6 and the conductive ring 8 to prevent conduction. The power connector 11 located at the top of the rotary joint 4 is connected to the conductive ring 8 through the conductive wire 9, which plays a role in stabilizing the power supply. The power connector 11 located at the top of the pull ring 2 can power the knife rod 6, which plays a role in group power supply and improves the stability of power supply.

[0034] Embodiment 2 See also Figure 1-8On the basis of embodiment 1, a booster tube 12 is installed inside the handle 1, a pull rope 13 is arranged inside the booster tube 12, a docking joint 14 is arranged on one side of the rotary joint 4, the other end of the docking joint 14 is connected with the outer sheath tube 5, a nut 15 is sleeved on the surface of the docking joint 14, the surface of the rotary joint 4 and the inner wall of the nut 15 are connected by threads, one end of the knife rod 6 passes through the ceramic seat 7 and is fixedly connected with a docking tube 16, one end of the pull rope 13 is fixedly connected with the docking tube 16, an inner tube 17 is installed inside the outer sheath tube 5, and one end of the inner tube 17 is connected with the three-way injection valve 3.

[0035] Specific: such as Figure 6 As shown, the booster tube 12 is grooved, sealing rings 18 are bonded to the left and right ends of the three-way injection valve 3, the pull rope 13 and the booster tube 12 pass through the sealing ring 18, and the tail is connected by laser welding to form a seal. The injection liquid enters the three-way injection valve 3 through the groove on the booster tube 12 and the channel of the inner tube 17, and the power connector 11 is tightly connected to the booster tube 12 by threaded compression.

[0036] Embodiment 3 See also Figure 1-8 On the basis of the first embodiment, one end of the booster tube 12 and the pull rope 13 both pass through the docking joint 14, both ends of the three-way injection valve 3 are fixedly connected with sealing rings 18, a through slot is opened on the top of the docking tube 16, one end of the pull rope 13 and the booster tube 12 both pass through the sealing ring 18, a sheath tube 19 is installed on the surface of the outer sheath tube 5, the docking joint 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.

[0037] Specific: such as Figure 6 As shown, the proximal end of the butt joint 14 is connected with the rotary joint 4 by interference fit, and the distal end is connected with the inner tube 17 by interference fit, and the booster tube 12 and the pull rope 13 pass through the butt joint 14; Figure 5 As shown, the knife rod 6 passes through the ceramic seat 7 and is connected to the distal end of the butt joint tube 16 by welding, the pull rope 13 is connected to the proximal end of the butt joint tube 16 by laser welding, a through slot is opened on the butt joint tube 16, the inner tube 17 is sleeved on the butt joint tube 16 by interference fit to form an injection channel, and the ceramic seat 7 is connected to the large hole of the outer sheath tube 5 by interference fit.

[0038] The working principle of the present invention is as follows: during endoscopic mucosal dissection, the doctor connects the electric knife connector to the power connector 11 on the handle 1, and the current passes through the power connector 11, the pull rope 13, the docking tube 16, and the knife rod 6 to form a current path. The current eventually reaches the electrode part of the knife rod 6, and the electrode contacts the diseased mucosal tissue. At this time, the high-frequency current generates heat in the electrode part of the electric knife rod 6, and the thermal effect causes protein denaturation and dehydration of the tissue, thereby achieving cutting. The cutting process of the electric knife is not only fast and effective, but also can reduce tissue damage. During the cutting process, the electrode of the electric knife needs to maintain precise contact with the diseased tissue to ensure the accuracy of the resection, while avoiding excessive thermal damage to cause unnecessary effects on surrounding normal tissues.

[0039] When electrocoagulation is required, the electric knife connector is connected to the power connector 11 on the rotary joint 4, and 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, it will generate heat in the contact area, and the thermal effect will cause the protein in the blood vessel to denature, thereby quickly achieving coagulation, sealing the ruptured blood vessels and preventing bleeding. The electrocoagulation process is not only fast but also efficient, and can achieve accurate hemostasis at the incision site, reduce the patient's bleeding, and help to have a clear field of vision so that the doctor can continue with subsequent operations.

[0040] During the operation, the doctor can hold the rotating joint 4 with one hand and the handle 1 and the pull ring 2 with the right hand, and adjust the angle of the blade by rotating the handle 1 and the pull ring 2 with one hand. At the same time, the injection liquid can enter the surgical site at any time through the three-way injection valve 3, the booster tube 12, the inner tube 17, the butt joint 16, and the knife rod 6 channel. The design of the rotating handle 1 allows the doctor to flexibly adjust the angle of the blade as needed to adapt to different operating requirements and field of view requirements. By rotating the handle 1, the doctor can accurately control the position and direction of the blade, thereby achieving more precise cutting and operation, especially when performing endoscopic surgery in narrow and difficult-to-reach areas, it can effectively avoid damage to surrounding tissues and improve the safety of the operation and the flexibility of operation.

[0041] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming by technicians in this field, which is common knowledge in this field, so the control method and circuit connection are not explained in detail in the present invention.

[0042] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

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 the top of the pull ring (2) is connected to a three-way liquid injection valve (3); An adjustment component is provided on one side of the handle (1), the adjustment component comprising a rotary joint (4), the rotary joint (4) being fixedly connected to one end of the handle (1), an outer sheath tube (5) being provided on one side of the rotary joint (4), a knife rod (6) being provided inside the outer sheath tube (5), and the rotation angle of the knife rod (6) is adjusted by the adjustment component; A power supply component is provided on one side of the handle (1), and the power supply component includes a ceramic seat (7). The ceramic seat (7) is installed at one end of the outer sheath tube (5). A conductive ring (8) is installed inside the ceramic seat (7). A conductive wire (9) is provided inside the outer sheath tube (5). The pull ring (2) and the top of the rotary joint (4) are both connected to a protective tube (10). A power supply connector (11) is threadedly connected inside the protective tube (10). The knife rod (6) and the conductive ring (8) are powered separately through the two power supply components.

2. A high-frequency cutting knife according to claim 1, characterized in that: A booster tube (12) is installed inside the handle (1), and a pull rope (13) is arranged inside the booster tube (12).

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

4. A high-frequency cutting knife according to claim 3, characterized in that: A nut (15) is sleeved on the surface of the docking joint (14), and the surface of the rotary joint (4) is connected to the inner wall of the nut (15) via threads.

5. The high-frequency cutting knife according to claim 2, characterized in that: One end of the knife rod (6) passes through the ceramic seat (7) and is fixedly connected to a butt joint pipe (16); one end of the pull rope (13) is fixedly connected to the butt joint pipe (16).

6. The high-frequency cutting knife according to claim 1, characterized in that: 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).

7. The high-frequency cutting knife according to claim 2, characterized in that: One end of the booster tube (12) and the pull rope (13) both pass through the docking joint (14), and both ends of the three-way injection valve (3) are fixedly connected with sealing rings (18).

8. The high-frequency cutting knife according to claim 5, characterized in that: A notch is provided at the top of the butt-joint tube (16), and one end of the pull rope (13) and the booster tube (12) both pass through a sealing ring (18).

9. The high-frequency cutting knife according to claim 7, characterized in that: A protective sleeve (19) is installed on the surface of the outer sheath tube (5), and the butt joint (14) and the inner tube (17) are fixedly connected.

10. The high-frequency cutting knife 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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