High-frequency electrotome and method for using the same

Abstract

The application belongs to the technical field of medical apparatus and discloses a high-frequency electric knife for endoscopic submucosal dissection, which comprises a knife head assembly, a driving assembly and a handle assembly, wherein the knife head assembly is connected with a high-frequency power supply, the knife head assembly can be switched between a first mode and a second mode, when the knife head assembly is in the first mode, the knife head assembly is used for cutting the tissue of the affected part, when the knife head assembly is in the second mode, the knife head assembly is used for hemostasis of the wound of the affected part, the driving assembly is used for controlling the knife head assembly to be switched between the first mode and the second mode, and the handle assembly comprises a sleeve tube and a handle connected with each other, the knife head assembly is installed at one end of the sleeve tube far away from the handle, and the driving assembly is arranged in the sleeve tube. The knife head assembly of the high-frequency electric knife can be switched between the first mode and the second mode, can cut the affected part and can also hemostasis of the affected part, the process of replacing equipment in the operation process is omitted, the operation time is reduced, and the operation is safer and more efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a high-frequency electrotome and a use method of the high-frequency electrotome. BACKGROUND

[0002] Endoscopic submucosal dissection (ESD) is an advanced endoscopic treatment technology, which was first proposed and implemented by Japanese scholars in the 1990s, and is mainly used for the treatment of early cancer of the esophagus, stomach, colon and other digestive tracts. With the increasing maturity of endoscopic submucosal dissection technology, the technology can also be used to treat benign tumors in the submucosa of the digestive tract.

[0003] The common electrotomes for endoscopic submucosal dissection on the market include needle knives, tip-insulated knives, hook knives, triangular knives, and laser knives. The main feature is to quickly mark and cut the mucosa with a rod-shaped electrode. And the rod-shaped electrode can be used to cauterize bleeding points to stop bleeding. However, in the case of heavy bleeding, the rod-shaped electrode cannot quickly and effectively stop bleeding. At this time, the doctor needs to replace the instrument, pull out the electrotome from the endoscope, replace the hot biopsy forceps, position the hot biopsy forceps to the bleeding site, and use the hot biopsy forceps to coagulate and stop bleeding. The replacement of endoscopic instruments is not only cumbersome but also time-consuming, which is not conducive to the patient's operation.

[0004] Therefore, there is an urgent need for a high-frequency electrotome and a use method of the high-frequency electrotome to solve the above problems. SUMMARY

[0005] An object of the present application is to provide a high-frequency electrotome that can be switched between a first mode and a second mode, can cut and stop bleeding at the affected area, avoids replacing equipment during the operation, reduces the operation time, and makes the operation safer and more efficient.

[0006] To achieve this object, the present application adopts the following technical solutions:

[0007] The high-frequency electrotome for endoscopic submucosal dissection comprises:

[0008] A knife head assembly connected with a high-frequency power supply, the knife head assembly being capable of being switched between a first mode and a second mode, the knife head assembly being used for cutting the tissue of the affected area when the knife head assembly is in the first mode, and the knife head assembly being used for stopping bleeding at the wound of the affected area when the knife head assembly is in the second mode;

[0009] A driving assembly for controlling the knife head assembly to be switched between the first mode and the second mode;

[0010] A handle assembly comprising a sleeve tube and a handle connected with each other, the knife head assembly being mounted at an end of the sleeve tube away from the handle, and the driving assembly being arranged in the sleeve tube.

[0011] As an optional technical solution of the high-frequency electrotome, the knife head assembly comprises a fixed knife head, a movable knife head and a knife head compartment. When the knife head assembly is in the first mode, the movable knife head is retracted into the knife head compartment, and the fixed knife head is used for cutting the tissue of the affected part.

[0012] When the knife head assembly is in the second mode, the movable knife head is extended out of the knife head compartment, and a shearing electrotome is formed between the movable knife head and the fixed knife head, which is used for clamping and stopping bleeding of the wound of the affected part.

[0013] As an optional technical solution of the high-frequency electrotome, one end of the movable knife head is provided with a connecting part, the connecting part is located in the knife head compartment, the connecting part is rotationally connected with a driving end of the driving assembly, and the side of the movable knife head away from the fixed knife head is further provided with a limiting part, and the limiting part is slidingly arranged in a limiting groove of the knife head compartment. The extension direction of the limiting groove is the same as the extension direction of the fixed knife head.

[0014] The driving end can drive the movable knife head to move away from the outer sleeve. When the limiting part abuts against one end of the limiting groove away from the outer sleeve, the movable knife head can be extended out of the knife head compartment and rotated around the limiting part, so that the movable knife head and the fixed knife head form the shearing electrotome.

[0015] As an optional technical solution of the high-frequency electrotome, the opposite sides of the fixed knife head and the movable knife head are provided with toothed structures.

[0016] As an optional technical solution of the high-frequency electrotome, the driving assembly comprises a cable and a sliding block. The sliding block is slidingly sleeved on the outside of the handle. The cable is arranged in the outer sleeve. One end of the cable is connected to the knife head assembly, and the other end is connected to the sliding block.

[0017] As an optional technical solution of the high-frequency electrotome, the handle is provided with a sliding groove extending in the axial direction thereof. The sliding groove is in communication with the outer sleeve, and the cable penetrates into the sliding groove.

[0018] The driving assembly further comprises a conductive plug. One end of the conductive plug is slidingly arranged in the sliding groove and connected with the cable. The other end of the conductive plug penetrates through the sliding block and is connected with the high-frequency power supply. The high-frequency power supply is used for supplying power to the knife head assembly.

[0019] As an optional technical solution of the high-frequency electrotome, the conductive plug is detachably connected with the high-frequency power supply.

[0020] As an optional technical solution of the high-frequency electrotome, a finger ring is arranged on the outside of the sliding block, and the finger ring is used for being held.

[0021] As an optional technical scheme of the high-frequency electrotome, the tail of the handle is provided with a hanging ring.

[0022] Another object of the present application is to provide a use method of the high-frequency electrotome, which can cut and hemostasis the affected part, reduce the operation time, and make the operation safer and more efficient.

[0023] To achieve the above object, the present application adopts the following technical scheme:

[0024] The use method of the high-frequency electrotome is used for the aforementioned high-frequency electrotome, and comprises the following steps:

[0025] S1, a user holds the handle, operates the driving assembly to switch the knife head assembly to the first mode, and cuts the affected part;

[0026] S2, the user operates the driving assembly to switch the knife head assembly to the second mode, and hemostasis the affected part.

[0027] The present application has the following beneficial effects:

[0028] The present application provides a high-frequency electrotome for endoscopic submucosal dissection, which comprises a knife head assembly, a driving assembly and a handle assembly, wherein the knife head assembly is connected with a high-frequency power supply, the knife head assembly can be switched between a first mode and a second mode, when the knife head assembly is in the first mode, the knife head assembly is used for cutting the affected part, when the knife head assembly is in the second mode, the knife head assembly is used for hemostasis of the affected part; the driving assembly is used for controlling the knife head assembly to switch between the first mode and the second mode; the handle assembly comprises a sleeve tube and a handle connected with each other, the knife head assembly is installed at one end of the sleeve tube away from the handle, and the driving assembly is arranged in the sleeve tube. The knife head assembly of the high-frequency electrotome can be switched between the first mode and the second mode, which can cut and hemostasis the affected part, saves the process of replacing equipment during the operation, reduces the operation time, and makes the operation safer and more efficient.

[0029] The present application also provides a use method of the high-frequency electrotome, which is used for the aforementioned high-frequency electrotome, a user holds the handle, operates the driving assembly to switch the knife head assembly to the first mode, and cuts the affected part, then the user operates the driving assembly to switch the knife head assembly to the second mode, and hemostasis the affected part, so that the user does not need to replace the equipment during the operation, improves the operation efficiency, and increases the safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a partial enlarged view of the knife head assembly provided by the present application;

[0031] Figure 2 is a sectional view of the handle assembly provided by the present application.

[0032] In the drawings:

[0033] 1, head assembly; 11, fixed head; 12, movable head; 121, limiting part; 13, head compartment; 131, limiting groove; 2, driving assembly; 21, cable; 22, slider; 221, finger ring; 23, conductive plug; 3, handle assembly; 31, outer sleeve; 32, handle; 321, hanging ring. DETAILED DESCRIPTION

[0034] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only those structures of the drawings that are pertinent to understanding the application are shown.

[0035] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include the direct contact of the first and second features, or it can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include the vertical and oblique above of the first feature in the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature in the second feature include the vertical and oblique below of the first feature in the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] As Figure 1 and Figure 2As shown, the embodiment provides a high-frequency electrotome for endoscopic submucosal dissection, which comprises a knife head assembly 1, a driving assembly 2 and a handle 32 assembly 3, wherein the knife head assembly 1 is connected with a high-frequency power supply, the knife head assembly 1 can be switched between a first mode and a second mode, when the knife head assembly 1 is in the first mode, the knife head assembly 1 is used for cutting the tissue of the affected area, when the knife head assembly 1 is in the second mode, the knife head assembly 1 is used for hemostasis of the wound of the affected area; the driving assembly 2 is used for controlling the knife head assembly 1 to switch between the first mode and the second mode; the handle 32 assembly 3 comprises a sleeve tube 31 and a handle 32 connected with each other, the knife head assembly 1 is installed at one end of the sleeve tube 31 away from the handle 32, and the driving assembly 2 is arranged in the sleeve tube 31. The knife head assembly 1 of the high-frequency electrotome can be switched between the first mode and the second mode, which can cut the affected area and hemostasis the affected area, saves the process of replacing equipment during the operation, reduces the operation time, and makes the operation more safe and efficient.

[0039] Further, the knife head assembly 1 comprises a fixed knife head 11, a movable knife head 12 and a knife head warehouse 13, when the knife head assembly 1 is in the first mode, the movable knife head 12 is retracted into the knife head warehouse 13, the fixed knife head 11 is exposed from the knife head warehouse 13, the fixed knife head 11 is powered by the high-frequency power supply to form a high-frequency electrotome, the user can operate the fixed knife head 11 to quickly mark and cut the mucosa, and can also use the end of the fixed knife head 11 to slightly hemostasis the small bleeding point. When the knife head assembly 1 is in the second mode, the movable knife head 12 extends out of the knife head warehouse 13, and forms a shearing electrotome with the fixed knife head 11, which can clamp and effectively electrocoagulate the larger bleeding point.

[0040] Specifically, one end of the movable knife head 12 in the knife head assembly 1 is provided with a connecting part, the connecting part is located in the knife head warehouse 13, and the connecting part is rotationally connected with a driving end of the driving assembly 2, the movable knife head 12 further comprises a limiting part 121, the limiting part 121 is located on the side of the movable knife head 12 away from the fixed knife head 11, and the limiting part 121 is slidingly arranged in a limiting groove 131 of the knife head warehouse 13, the extending direction of the limiting groove 131 is the same as the extending direction of the fixed knife head 11. The driving end can drive the movable knife head 12 to move away from the sleeve tube 31, as the movable knife head 12 moves in the knife head warehouse 13, the limiting part 121 abuts to one end of the limiting groove 131 away from the sleeve tube 31, at this time, the movable knife head 12 extends out of the knife head warehouse 13, the driving end continues to drive the movable knife head 12, the movable knife head 12 generates a torque and rotates around the limiting part 121, so that the movable knife head 12 forms a shearing electrotome with the fixed knife head 11, at this time, the knife head assembly 1 is in the second mode, the user can operate the driving assembly 2 to drive the movable knife head 12 and the fixed knife head 11 to open and close. Preferably, the opposite sides of the fixed knife head 11 and the movable knife head 12 are both provided with a toothed structure, which improves the engagement degree of the shearing electrotome, and is helpful to clamp and electrocoagulate the larger bleeding point.

[0041] The driving assembly 2 in the embodiment comprises a cable 21 and a sliding block 22, the sliding block 22 is sleeved outside the handle 32, the cable 21 is sleeved in the outer sleeve 31, one end of the cable 21 is connected to the knife head assembly 1, the other end is connected to the sliding block 22, the user can drive the cable 21 to move through the driving end by sliding the sliding block 22 on the handle 32, so as to switch the knife head assembly 1 between the first mode and the second mode, and operate the knife head assembly 1 in the second mode to cut. Specifically, the handle 32 of the high-frequency electrotome is provided with a sliding groove extending in the axial direction, the sliding groove is communicated with the outer sleeve 31, the cable 21 is transmitted into the sliding groove, the driving assembly 2 further comprises a conductive plug 23, one end of the conductive plug 23 is slidably arranged in the sliding groove and connected with the cable 21, the other end passes through the sliding block 22 and is connected with the high-frequency power supply, the high-frequency power supply is used for supplying power to the knife head assembly 1, preferably, the conductive plug 23 is detachably connected with the high-frequency power supply, when the user operates the high-frequency electrotome, the conductive plug 23 can be electrically connected with the high-frequency power supply, and the high-frequency current is transmitted to the knife head assembly 1 through the cable 21, so that the fixed knife 11 and the movable knife 12 are electrified.

[0042] In order to facilitate the user to operate the high-frequency electrotome, the sliding block 22 of the high-frequency electrotome is provided with a finger ring 221 outside, the finger ring 221 is used for being held, the user can pass the fingers through the finger ring 221 to adjust the position of the sliding block 22 on the handle 32, and then control the knife head assembly 1 to operate the surgery. Preferably, the outer sleeve 31 in the embodiment is a flexible pipe, which facilitates the movement of the high-frequency electrotome in the body and reduces the probability of accidental injury to the patient caused by the high-frequency electrotome. The tail of the handle 32 is also provided with a hanging ring 321, after the user operates the surgery, the high-frequency electrotome can be hung up, which is convenient for storage.

[0043] The embodiment also provides a use method of the high-frequency electrotome, comprising:

[0044] S1, the user holds the handle 32 and operates the driving assembly 2 to switch the knife head assembly 1 to the first mode and cut the tissue of the affected part;

[0045] S2, the user operates the driving assembly 2 to switch the knife head assembly 1 to the second mode and stops bleeding of the wound of the affected part.

[0046] Specifically, the operating method of the high-frequency electrotome is as follows: the user pulls the slider 22 to the proximal end, the slider 22 drives the conductive plug 23 to pull the cable 21 to move away from the direction of the knife head assembly 1, and then drives the movable knife head 12 to retract into the knife head compartment 13, so that the knife head assembly 1 is in the first mode, the user uses the fixed knife head 11, can quickly mark or cut the mucosa, and also can use the end of the fixed knife head 11 to cauterize the bleeding point to stop bleeding. However, if the amount of bleeding is large, the fixed knife head 11 cannot quickly and effectively stop bleeding, at this time the user can switch the knife head assembly 1 to the second mode.

[0047] The user pushes the slider 22 to the distal end, the slider 22 will make the conductive plug 23 push the cable 21 to move to the direction close to the knife head assembly 1, and then the cable 21 pushes the movable knife head 12 to explore outwards, the movable knife head 12 is affected by the limiting groove 131, when the limiting part 121 abuts to one end of the limiting groove 131 away from the outer sleeve 31, the driving end continues to drive the movable knife head 12 to rotate around the limiting part 121, so that the movable knife head 12 and the fixed knife head 11 form a scissors electrotome. The user operates the movable knife head 12 and the fixed knife head 11 to clamp and implement electrocoagulation hemostasis on the relatively large bleeding point.

[0048] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A high-frequency electrosurgical unit for endoscopic submucosal dissection, characterized in that, include: The blade assembly (1) is connected to a high-frequency power supply and can switch between a first mode and a second mode. When the blade assembly (1) is in the first mode, it is used to cut the affected tissue. When the blade assembly (1) is in the second mode, it is used to stop bleeding from the wound. A drive component (2) is used to control the cutter head assembly (1) to switch between the first mode and the second mode; Handle assembly (3), the handle assembly (3) includes a connected outer tube (31) and a handle (32), the cutter head assembly (1) is installed at the end of the outer tube (31) away from the handle (32), and the drive assembly (2) is disposed inside the outer tube (31); The blade assembly (1) includes a fixed blade (11), a movable blade (12), and a blade compartment (13). When the blade assembly (1) is in the first state, the movable blade (12) retracts into the blade compartment (13), and the fixed blade (11) is used to cut the tissue of the affected area. When the blade assembly (1) is in the second state, the movable blade (12) extends out of the blade chamber (13) and forms a scissor-type electrosurgical knife with the fixed blade (11) for clamping and stopping bleeding of the wound at the affected area; The handle (32) is provided with a hanging ring (321) at the end.

2. The high-frequency electrosurgical unit according to claim 1, characterized in that, One end of the movable cutter head (12) is provided with a connecting part, which is located in the cutter head chamber (13). The connecting part is rotatably connected to the driving end of the driving assembly (2). A limiting part (121) is also provided on the side of the movable cutter head (12) away from the fixed cutter head (11), and the limiting part (121) is slidably disposed in the limiting groove (131) of the cutter head chamber (13). The extending direction of the limiting groove (131) is the same as the extending direction of the fixed cutter head (11). The driving end can drive the movable cutter head (12) to move away from the outer sleeve (31). When the limiting part (121) abuts against the end of the limiting groove (131) away from the outer sleeve (31), the movable cutter head (12) can extend out of the cutter head chamber (13) and rotate around the limiting part (121) so that the movable cutter head (12) and the fixed cutter head (11) form the scissor-type electric knife.

3. The high-frequency electrosurgical unit according to claim 1, characterized in that, Both the fixed cutter head (11) and the movable cutter head (12) have toothed structures on opposite sides.

4. The high-frequency electrosurgical unit according to claim 1, characterized in that, The drive assembly (2) includes a cable (21) and a slider (22). The slider (22) is slidably sleeved on the outside of the handle (32). The cable (21) passes through the outer sleeve (31). One end of the cable (21) is connected to the cutter head assembly (1), and the other end is connected to the slider (22).

5. The high-frequency electrosurgical unit according to claim 4, characterized in that, The handle (32) is provided with a groove extending along its axial direction, the groove being connected to the outer sleeve (31), and the cable (21) passing through the groove; The drive assembly (2) further includes a conductive plug (23), one end of which is slidably disposed in the groove and connected to the cable (21), and the other end passes through the slider (22) and is connected to the high-frequency power supply, which is used to supply power to the cutter head assembly (1).

6. The high-frequency electrosurgical unit according to claim 5, characterized in that, The conductive plug (23) is detachably connected to the high-frequency power supply.

7. The high-frequency electrosurgical unit according to claim 4, characterized in that, A finger ring (221) is provided on the outside of the slider (22), and the finger ring (221) is used for being held.

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