A bending compensation device for a high-frequency electrotome

Abstract

The application relates to the technical field of high-frequency electric knives, in particular to a bending compensation device for a high-frequency electric knife, which comprises a handle, a button, a PCBA control board, a power cord, a conductive part, a T-shaped part, an inner snake bone pipe, an outer snake bone pipe, a sleeve pipe, a first connecting sheet and an electric knife. The bending compensation device for the high-frequency electric knife can drive the inner rotating block, the second connecting sheet and the snake bone pipe to rotate as a whole through the rotating sleeve of the rotating assembly, the bearing is arranged to ensure that the stability of the sliding ring is not affected when the inner snake bone pipe rotates, the electric knife can be further adjusted to rotate on the basis of bending, the cutting demand in multiple directions and complex angles can be met, and the flexibility and accuracy of the operation are improved.

Description

Technical Field

[0001] This invention relates to the field of high-frequency electrosurgical technology, and more specifically to a bending compensation device for high-frequency electrosurgical devices. Background Technology

[0002] Currently, high-frequency electrosurgical units occupy an important position in the field of surgery. Their working principle is based on the thermal effect of high-frequency current. By generating a concentrated thermal effect through the contact of dense high-frequency current with the body, the tissue is heated to achieve cutting and hemostasis. They are widely used in surgeries in many departments such as general surgery, gynecology, urology, orthopedics, thoracic surgery, neurosurgery, and otolaryngology.

[0003] Despite the widespread use and numerous advantages of high-frequency electrosurgical units, such as high cutting speed, excellent hemostasis, flexible operation, and wide applicability, current high-frequency electrosurgical units still have significant drawbacks in practical surgical applications. Due to the slender structure of the scalpel, bending during surgery reduces the control precision of the cutting tip. This can lead to errors between the tip's position and the target cutting location, potentially causing tissue damage to non-target areas, expanding the cutting area, and even leading to serious consequences. In surgeries requiring extremely high precision, such as neurosurgery and ophthalmology, this can result in accidental damage to non-target tissues, expanding the cutting area, affecting surgical outcomes, and even causing postoperative complications, adversely impacting patient recovery.

[0004] With the continuous advancement of medical technology, surgical procedures are developing towards greater precision and minimally invasive techniques. The requirements for the precision of high-frequency electrosurgical units are increasing, and the precision issues caused by the bending of the scalpel shaft in existing high-frequency electrosurgical technologies have become a bottleneck restricting their further application in high-end, complex surgeries.

[0005] Therefore, the present invention provides a bending compensation device for a high-frequency electrosurgical unit to solve the above-mentioned problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a bending compensation device for a high-frequency electrosurgical unit. This device addresses the problem that, due to the slender structure of the scalpel, bending of the scalpel during surgery reduces the control precision of the scalpel tip, causing an error between the scalpel tip's position and the target cutting position. This can lead to tissue damage at non-target locations, expand the cutting range, and even cause serious consequences.

[0007] To achieve the above objectives, the present invention provides a bending compensation device for a high-frequency electrosurgical unit, comprising a handle, a button on the surface of the handle, a PCBA control board and a power cord installed inside the handle, a conductive element installed on the surface of the PCBA control board, a T-shaped component installed inside the handle, an inner snake tube fixed to the inner wall of the T-shaped component, an outer snake tube installed outside the inner snake tube, a coaxial sleeve installed outside the outer snake tube, a first connecting piece installed at the end of the inner snake tube away from the handle, and an electrosurgical cutter installed at the first connecting piece away from the inner snake tube, the electrosurgical cutter being capable of cutting tissues in the body;

[0008] The handle is equipped with a bending component for bending and deforming the inner snake tube. The bending component includes a sliding ring that is slidably connected to the surface of the T-shaped part, and the sliding ring is axially aligned with the T-shaped part. The sliding ring can slide laterally along the axial direction of the T-shaped part. Two drive blocks are symmetrically fixed to the outer wall of the sliding ring. The surface of the handle is provided with a sliding opening that cooperates with the drive blocks, and the drive blocks are slidably connected inside the sliding opening.

[0009] The surface of the handle is provided with a threaded sleeve, and the surface of the handle has a positioning groove for accommodating the threaded sleeve. The positioning groove is connected to the sliding opening. The threaded sleeve is located inside the positioning groove. The inner wall of the threaded sleeve has a threaded section, and the driving block is located inside the threaded section. When the threaded sleeve rotates, it can push the driving block to slide inside the sliding opening.

[0010] The surface of the T-shaped part is fitted with a bearing, and one side of the bearing abuts against the surface of the sliding ring, which can reduce the friction force on the sliding ring when it slides. A nylon nut is provided on the side of the bearing away from the sliding ring, and the nylon nut is installed on the surface of the T-shaped part, which can limit the sliding ring and the bearing.

[0011] The rotating assembly includes a rotating sleeve disposed on the surface of the handle, an inner rotating block being sleeved inside the rotating sleeve, and the rotating sleeve being able to drive the inner rotating block to rotate.

[0012] Preferably, the surface of the inner snake tube has multiple first arc-shaped grooves arranged at equal intervals along its axial direction, so that the inner snake tube has a certain bending space.

[0013] Preferably, the surface of the outer snake tube has multiple second arc-shaped grooves and grooves arranged at equal intervals along its axial direction. The second arc-shaped grooves are connected to the grooves. The inner wall of the second arc-shaped groove has ribs that are slidably connected to the inside of the groove. The ribs can slide laterally inside the groove. The inner snake tube can be limited by the cooperation of the ribs and the groove.

[0014] Preferably, the outer wall of the first connecting piece is symmetrically fixed with a first locking block, a connector is installed on the side of the first connecting piece away from the inner snake tube, a second locking block is formed on the side of the connector facing the inner snake tube, and the second locking block abuts against the outer wall of the first locking block. The side of the outer snake tube facing the connector is provided with a limiting groove that matches the first locking block and the second locking block, and the first locking block and the second locking block are slidably connected inside the limiting groove.

[0015] Preferably, the handle has an annular groove, the rotating sleeve has ribs, and the ribs of the rotating sleeve are slidably connected inside the annular groove.

[0016] Preferably, the outer wall of the outer snake bone tube is fixed with a second connecting piece, and two third locking blocks are symmetrically fixed on the outer wall of the second connecting piece. The inner rotating block is provided with a receiving groove, and the third locking blocks are located inside the receiving groove.

[0017] The beneficial effects of this invention are as follows:

[0018] By rotating the screw sleeve, the inner and outer serpentine tubes can be bent synchronously. The rib wall and groove of the outer serpentine tube cooperate to restrict the inner serpentine tube to bend in only one direction, avoiding bending deviation and ensuring that the electrosurgical cutter can accurately target tissues in different locations. This solves the problem of fixed cutting angles and difficulty in adapting to complex anatomical positions by traditional electrosurgical cutters. The rotating sleeve of the rotating component can drive the inner rotating block, the second connecting piece, and the serpentine tube to rotate as a whole. The bearing setting ensures that the rotation of the inner serpentine tube does not affect the stability of the sliding ring, allowing the electrosurgical cutter to be further rotated and adjusted on the basis of bending, meeting the cutting needs of multiple directions and complex angles, and improving the flexibility and precision of surgical operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the handle of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the electric cutter of the present invention;

[0022] Figure 4 This is a schematic diagram of the bending component of the present invention;

[0023] Figure 5 This is a schematic diagram of the first three-dimensional cross-section of the sleeve of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A;

[0025] Figure 7 This is a schematic diagram of the internal serpentine tube structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the external snake bone tube of the present invention;

[0027] Figure 9 This is a schematic diagram of the connector structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the first connecting piece of the present invention;

[0029] Figure 11 This is a schematic diagram of the rotating sleeve of the present invention.

[0030] In the picture:

[0031] 10. Handle; 101. Upper shell; 102. Lower shell; 103. Arc-shaped block; 104. Linkage groove; 105. Annular block; 11. Button; 12. PCBA control board; 13. Power cord; 14. Conductive component; 15. T-shaped component; 16. Inner snake-bone tube; 160. First arc-shaped groove; 17. Outer snake-bone tube; 170. Second arc-shaped groove; 171. Groove; 18. Sleeve; 19. First connecting piece; 190. First locking block; 110. Connector; 1101. Second locking block; 111. Electric cutter; 112. Limiting groove;

[0032] 20. Bending assembly; 21. Sliding ring; 22. Drive block; 23. Sliding end; 24. Screw sleeve; 25. Positioning groove; 26. Bearing; 27. Nylon nut;

[0033] 30. Rotating assembly; 31. Rotating sleeve; 32. Inner rotating block; 33. Annular groove; 34. Second connecting piece; 35. Receiving groove; 36. Third locking block. Detailed Implementation

[0034] The following will refer to the attached reference. Figures 1-11 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] like Figures 1 to 11 As shown, a bending compensation device for a high-frequency electrosurgical unit includes a handle 10, which is assembled from an upper shell 101 and a lower shell 102. An arc-shaped block 103 is snapped onto the handle 10. The handle 10 has a linkage groove 104 for assembling the arc-shaped block 103, and the arc-shaped block 103 is snapped onto the linkage groove 104. A detachable annular block 105 is installed on the outside of the arc-shaped block 103 to stabilize the arc-shaped block 103 on the handle 10, thereby completing the assembly of the upper shell 101 and the lower shell 102.

[0036] The handle 10 has a button 11 on its surface. The handle 10 has a PCBA control board 12 and a power cord 13 installed inside. The end of the power cord 13 can be connected to a power source. The surface of the PCBA control board 12 has a conductive element 14. The PCBA control board 12 is powered by plugging the power cord 13 into the power source. The button 11 controls the opening and closing state of the PCBA control board 12. All of these are existing technologies and will not be described in detail.

[0037] The handle 10 has a T-shaped part 15 installed inside. The T-shaped part 15 has a through hole running through the middle. The inner wall of the T-shaped part 15 is fixed with an inner snake tube 16. The surface of the inner snake tube 16 has a plurality of first arc-shaped grooves 160 arranged at equal intervals along its axial direction, providing a certain bending space for the inner snake tube 16.

[0038] An outer snake tube 17 is installed on the outside of the inner snake tube 16. The surface of the outer snake tube 17 has a plurality of second arc-shaped grooves 170 and grooves 171 arranged at equal intervals along its axial direction. The plurality of second arc-shaped grooves 170 and grooves 171 correspond one to one, and each second arc-shaped groove 170 is connected to the groove 171.

[0039] The inner wall of the second arc-shaped groove 170 has ribs that are slidably connected to the inside of the groove 171. The ribs can slide laterally inside the groove 171. By cooperating with the groove 171, the inner snake tube 16 can be limited, so that the inner snake tube 16 can only be bent in one direction.

[0040] The outer snake tube 17 is fitted with a coaxial sleeve 18. The inner snake tube 16 is fitted with a first connecting piece 19 at the end away from the handle 10. The outer wall of the first connecting piece 19 is symmetrically fixed with a first locking block 190. A connector 110 is fitted on the side of the first connecting piece 19 away from the inner snake tube 16. A second locking block 1101 is formed on the side of the connector 110 facing the inner snake tube 16, and the second locking block 1101 abuts against the outer wall of the first locking block 190. The outer snake tube 17 is provided with a limiting groove 112 on the side facing the connector 110, which is adapted to the first locking block 190 and the second locking block 1101. The first locking block 190 and the second locking block 1101 are slidably connected inside the limiting groove 112.

[0041] The first connecting piece 19 is located away from the inner snake bone tube 16 and is equipped with an electric cutting blade 111, which is capable of cutting tissues in the body.

[0042] The handle 10 is provided with a bending component 20, which is used to bend and deform the inner snake tube 16, thereby flexibly adjusting the cutting angle of the electric cutter 111.

[0043] The bending assembly 20 includes a sliding ring 21 slidably connected to the surface of the T-shaped member 15, and the sliding ring 21 is axially aligned with the T-shaped member 15. The sliding ring 21 can slide laterally along the axial direction of the T-shaped member 15. Two drive blocks 22 are symmetrically fixed to the outer wall of the sliding ring 21. The surface of the handle 10 is provided with a sliding opening 23 that matches the drive blocks 22, and the drive blocks 22 are slidably connected inside the sliding opening 23.

[0044] The surface of the handle 10 is provided with a threaded sleeve 24. The surface of the handle 10 has a positioning groove 25 for accommodating the threaded sleeve 24. The positioning groove 25 is connected to the slide 23. The threaded sleeve 24 is located inside the positioning groove 25. The inner wall of the threaded sleeve 24 has a threaded section. The driving block 22 is located inside the threaded end. When the threaded sleeve 24 rotates, it can push the driving block 22 to slide inside the slide 23.

[0045] A bearing 26 is fitted onto the surface of the T-shaped part 15, and one side of the bearing 26 abuts against the surface of the sliding ring 21, which can reduce the friction force on the sliding ring 21 when it slides. A nylon nut 27 is provided on the side of the bearing 26 away from the sliding ring 21, and the nylon nut 27 is installed on the surface of the T-shaped part 15, which can limit the sliding ring 21 and the bearing 26.

[0046] The handle 10 is provided with a rotating component 30, which enables the electric cutter 111 to rotate.

[0047] The rotating assembly 30 includes a rotating sleeve 31 disposed on the surface of the handle 10. An inner rotating block 32 is sleeved inside the rotating sleeve 31, and the rotating sleeve 31 can drive the inner rotating block 32 to rotate. An annular groove 33 is provided on the handle 10. The rotating sleeve 31 has ribs, and the ribs of the rotating sleeve 31 are slidably connected inside the annular groove 33. A second connecting piece 34 is fixed to the outer wall of the outer snake tube 17. Two third locking blocks 36 are symmetrically fixed to the outer wall of the second connecting piece 34. A receiving groove 35 is provided on the inner rotating block 32, and the third locking blocks 36 are located inside the receiving groove 35.

[0048] In use, plug the power cord 13 into the power supply, and then press the button 11 that turns on the PCBA control board 12. The conductive element 14 on the PCBA control board 12 contacts the inner snake tube 16. Since the inner snake tube 16, the outer snake tube 17, and the first connecting piece 19 are all conductive, while the connector 110 and the sleeve 18 are not conductive, when the inner snake tube 16 contacts the conductive element 14, the electric cutting blade 111 is energized and can cut tissue. When cutting tissue at different locations, the user can rotate the screw sleeve 24 to drive the drive block 22 to slide inside the slide 23. The drive block 22 drives the sliding ring 21 to slide on the surface of the T-shaped part 15. However, at this time, the sliding ring 21 and the bearing 26 are restricted by the nylon nut 27, which will drive... The T-shaped component 15 slides inside the handle 10, which in turn drives the inner snake tube 16 to slide into the handle 10, causing the inner snake tube 16 to bend. Since the inner snake tube 16 has an opening located at the section with the first arc-shaped groove 160, when the inner snake tube 16 bends, the section with the first arc-shaped groove 160 unfolds along the direction of the opening. At this time, the space of the first arc-shaped groove 160 is compressed, providing necessary buffer space for the bending action, ensuring a smooth and controllable bending process. The inner snake tube 16 abuts against the outer snake tube 17 via the first locking block 190. Simultaneously, the inner snake tube 16 forms an abutting engagement with the outer snake tube 17 through its own first locking block 190. Both block 190 and the second locking block 1101 on the outer snake tube are constrained by the limiting groove 112. This double limiting structure not only ensures the relative positional stability between the inner and outer snake tubes, but also forms a directional force transmission path during bending. When the inner snake tube 16 deforms, the second locking block 1101 applies a directional thrust to the outer snake tube 17, forcing the outer snake tube 17 to bend synchronously. The rib wall is limited by the groove 171, and can only slide along the extension path of the groove 171, fundamentally avoiding possible lateral displacement during bending. Furthermore, the second arc-shaped groove 170 also provides compression space for the bending of the outer snake tube 17, allowing the outer snake tube 17 to bend only in one direction, preventing displacement during bending. Because the inner snake bone tube 16 and the outer snake bone tube 17 have a double-layer structure, and both the inner snake bone tube 16 and the outer snake bone tube 17 form a skeleton, they can bend and also provide support. When the device is used for surgery, the inner snake bone tube 16 and the outer snake bone tube 17 can fix the angle of the electrosurgical knife during surgery, thereby avoiding the problem of tilting during electrosurgical knife surgery. The user can also rotate the rotating sleeve 31. The rotating sleeve 31 drives the second connecting piece 34 to rotate through the inner rotating block 32. The second connecting piece 34 drives the inner snake bone tube 16 to rotate through the outer snake bone tube 17. Since there is a bearing 26 between the nylon nut 27 and the sliding ring 21, the rotation of the inner snake bone tube 16 will not affect the sliding ring 21, thereby enabling the electrosurgical knife 111 to cut tissue at multiple angles.

[0049] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A bending compensation device for a high-frequency electrosurgical unit, characterized in that, Includes a handle (10), the surface of which is provided with a button (11), the inside of which is installed a PCBA control board (12) and a power cord (13), the surface of which is provided with a conductive element (14), the inside of which is installed with a T-shaped part (15), the inner wall of which is fixed with an inner snake bone tube (16), the outside of which is installed with an outer snake bone tube (17), the outside of which is installed with a coaxial sleeve (18), the end of which is away from the handle (10) of the inner snake bone tube (16) is provided with a first connecting piece (19), the first connecting piece (19) is away from the inner snake bone tube (16) and an electric cutting knife (111) is provided, the electric cutting knife (111) is capable of cutting tissue in the body; The handle (10) is provided with a bending component (20) for bending and deforming the inner snake tube (16). The bending assembly (20) includes a sliding ring (21) slidably connected to the surface of the T-shaped part (15), and the sliding ring (21) is axially aligned with the T-shaped part (15). The sliding ring (21) can slide laterally along the axial direction of the T-shaped part (15). Two drive blocks (22) are symmetrically fixed to the outer wall of the sliding ring (21). The surface of the handle (10) is provided with a sliding opening (23) that cooperates with the drive blocks (22), and the drive blocks (22) are slidably connected inside the sliding opening (23). The surface of the handle (10) is provided with a threaded sleeve (24), and the surface of the handle (10) has a positioning groove (25) for accommodating the threaded sleeve (24). The positioning groove (25) is connected to the sliding opening (23). The threaded sleeve (24) is located inside the positioning groove (25). The inner wall of the threaded sleeve (24) has a threaded section, and the drive block (22) is located inside the threaded section. When the screw sleeve (24) rotates, it can push the drive block (22) to slide inside the slide (23). The surface of the T-shaped part (15) is fitted with a bearing (26), and one side of the bearing (26) abuts against the surface of the sliding ring (21), which can reduce the friction force on the sliding ring (21) when it slides. A nylon nut (27) is provided on the side of the bearing (26) away from the sliding ring (21), and the nylon nut (27) is installed on the surface of the T-shaped part (15), which can limit the sliding ring (21) and the bearing (26). A rotating assembly (30) is provided on the handle (10). The rotating assembly (30) includes a rotating sleeve (31) provided on the surface of the handle (10). An inner rotating block (32) is fitted inside the rotating sleeve (31), and the rotating sleeve (31) can drive the inner rotating block (32) to rotate.

2. The bending compensation device for a high-frequency electrosurgical unit according to claim 1, characterized in that, The surface of the inner snake tube (16) has multiple first arc-shaped grooves (160) arranged at equal intervals along its axial direction, so that the inner snake tube (16) has a certain bending space.

3. The bending compensation device for a high-frequency electrosurgical unit according to claim 1, characterized in that, The surface of the outer snake tube (17) has multiple second arc-shaped grooves (170) and grooves (171) arranged equidistantly along its axial direction. The second arc-shaped grooves (170) are connected to the grooves (171). The inner wall of the second arc-shaped groove (170) has ribs. The ribs are slidably connected inside the grooves (171) and can slide laterally inside the grooves (171). The inner snake tube (16) can be limited by the ribs cooperating with the grooves (171).

4. The bending compensation device for a high-frequency electrosurgical unit according to claim 1, characterized in that, The outer wall of the first connecting piece (19) is symmetrically fixed with a first locking block (190). A connector (110) is installed on the side of the first connecting piece (19) away from the inner snake tube (16). A second locking block (1101) is formed on the side of the connector (110) facing the inner snake tube (16). The second locking block (1101) abuts against the outer wall of the first locking block (190). A limiting groove (112) adapted to the first locking block (190) and the second locking block (1101) is opened on the side of the outer snake tube (17) facing the connector (110). The first locking block (190) and the second locking block (1101) are slidably connected inside the limiting groove (112).

5. A bending compensation device for a high-frequency electrosurgical unit according to claim 1, characterized in that, The handle (10) has an annular groove (33), the rotating sleeve (31) has a rib wall, and the rib wall of the rotating sleeve (31) is slidably connected to the inside of the annular groove (33).

6. A bending compensation device for a high-frequency electrosurgical unit according to claim 5, characterized in that, The outer wall of the outer snake bone tube (17) is fixed with a second connecting piece (34), and two third locking blocks (36) are symmetrically fixed on the outer wall of the second connecting piece (34). The inner rotating block (32) is provided with a receiving groove (35), and the third locking block (36) is located inside the receiving groove (35).

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