A neuroendoscopic transnasal mucosal flap electrosurgical unit

Abstract

The present invention discloses an electric knife for making a mucosal flap through a neuroendoscopic transnasal approach, and relates to the technical field of medical devices. The present invention comprises an insulating rod, a plug-in rod is fixedly mounted on one end of the insulating rod, an insulating sleeve is slidably sleeved on the plug-in rod, and an end of the insulating sleeve close to the insulating rod is provided with a positioning mechanism used in conjunction with the plug-in rod, an end of the insulating sleeve away from the insulating rod is fixedly mounted with a standard joint, and an end of the insulating rod away from the insulating sleeve is detachably provided with a tapered transition section. The use of the positioning mechanism provides convenience for adjusting and fixing the position of the insulating sleeve, thereby achieving the purpose of adjusting the length of the handle, thereby being able to meet the use requirements of different medical staff, thereby improving the practicability of the electric knife, and under the coordinated action of the limiting mechanism, the rotating disk and the plug-in slot, convenient adjustment and fixation of the angle of the knife head body is achieved, thereby being able to meet the operation requirements of different surgeries, thereby further improving the practicability of the electric knife.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an electric knife for making a mucosal flap through a neuroendoscopic transnasal approach. Background Art

[0002] The problem of cerebrospinal fluid leakage has been accompanied by the development of endoscopic skull base surgery since its origin, and has become a difficult problem that troubles neurosurgeons. The invention of the pedicled nasal mucosal flap has reduced the incidence of cerebrospinal fluid leakage to less than 5%, greatly promoting the development of endoscopic technology. The pedicled mucosal flap supplied by the nasal septal artery branch uses mucosa taken from the nasal septum with healthy blood vessels to repair skull base bone and dura mater defects. The blood vessels of this mucosal flap come from the nasal septum branch of the sphenopalatine artery, forming different shapes and sizes according to needs. Its biggest advantage is that the repaired mucosal flap will grow together with the residual mucosa of the skull base, thereby achieving the best repair effect and preventing the occurrence of cerebrospinal fluid leakage.

[0003] The current electrosurgical knife structure, as described in the patent publication number CN208160644U, is a neuroendoscopic transnasal mucosal flap production electrosurgical knife, comprising an insulating rod, a high-frequency electrosurgical knife standard interface is provided at the tail of the insulating rod, and an exposed part is provided at the front of the insulating rod. The exposed part is in the shape of a needle, and its tip is a round shield structure. The utility model helps clinicians to make nasal mucosal flaps more efficiently and safely, and promotes the promotion of neuroendoscopic technology.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the handle length cannot be adjusted, thereby failing to meet the needs of different medical staff and failing to conveniently adjust the angle of the blade body. Therefore, the inventor proposes a neuroendoscopic transnasal mucosal flap production electrosurgical knife to solve the above problems. Summary of the invention

[0005] In order to solve the problem that the handle length cannot be adjusted and the angle of the blade body cannot be conveniently adjusted; the purpose of the present invention is to provide an electrosurgical knife for making a mucosal flap via a neuroendoscopic transnasal approach.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a neuroendoscopic transnasal mucosal flap production electric knife, comprising an insulating rod, one end of the insulating rod is fixedly installed with a plug rod, an insulating sleeve is slidably sleeved on the plug rod, and the end of the insulating sleeve close to the insulating rod is provided with a positioning mechanism used in conjunction with the plug rod, the end of the insulating sleeve away from the insulating rod is fixedly installed with a standard joint, the end of the insulating sleeve away from the insulating rod is detachably provided with a tapered transition section, the end of the insulating rod away from the insulating sleeve is provided with an internal threaded hole, and the end of the tapered transition section close to the insulating sleeve is fixedly installed with a standard joint. An external threaded column is provided for use in conjunction with an internal threaded hole, and the external threaded column can be threadedly inserted in the internal threaded hole. With the coordinated use of the internal threaded hole and the external threaded column, convenient disassembly and assembly of the tapered transition section is achieved, thereby achieving convenient disassembly and assembly of the cutter head body, and a rotating disk is rotatably installed at one end of the tapered transition section away from the insulating rod, a clamping groove is provided at one end of the tapered transition section away from the insulating rod, and a rotating rod is rotatably inserted in the clamping groove, the rotating disk is rotatably sleeved on the rotating rod, the cutter head body is fixedly installed on the rotating disk, and a limiting mechanism for use in conjunction with the rotating disk is provided in the inner cavity of the tapered transition section.

[0007] Preferably, the positioning mechanism includes a pressing rod, which is slidably inserted in one end of the insulating sleeve close to the insulating rod, and the pressing rod is symmetrical in structure. A built-in cavity is provided inside the plug-in rod. The pressing rod movably passes through the plug-in rod and a pressing plate is provided at its end. The pressing plate is movably clamped in the built-in cavity, and the top and the bottom of the opposite side of the pressing plate are provided with fixing rods. The top and the bottom ends of the side walls on both sides of the inner cavity of the built-in cavity are provided with fixing holes distributed in an array, and the fixing rod can be slidably inserted in the fixing hole. One of the pressing plates is away from the fixed hole. A plug-in column is fixedly installed on one side of the fixed rod, and a plug-in sleeve is fixedly installed on the other side of the pressing plate close to the plug-in column, and the plug-in column is slidably inserted in the plug-in sleeve, and a first spring is movably sleeved on the outer side of the plug-in column and the plug-in sleeve, and both ends of the first spring are fixedly connected to the pressing plate, and a symmetrically distributed first sinking groove is opened at one end of the insulating sleeve close to the insulating rod, and the pressing rod is slidably inserted in the first sinking groove, and a symmetrically arranged sliding groove is opened on the plug-in rod, and the sliding groove is connected to the built-in cavity, and the pressing rod movably passes through the sliding groove.

[0008] Preferably, a mirror-distributed limit block is fixedly installed on one end of the plug-in rod away from the insulating rod, and a symmetrically distributed limit groove is opened on the inner wall of the insulating sleeve. The limit block is slidably clamped in the limit groove. Under the coordinated action of the limit block and the limit groove, a limiting effect is played on the movement and adjustment of the insulating sleeve.

[0009] Preferably, the limiting mechanism includes a sliding plate, an installation cavity is provided inside the conical transition section, the sliding plate is slidably clamped in the installation cavity, and a plug-in plate is fixedly installed on the side of the sliding plate away from the insulating rod, and an array of plug-in slots are provided on the rotating disk, the plug-in plate can slide through the conical transition section and be slidably inserted in the plug-in slot, a second spring is fixedly installed on the side of the sliding plate close to the insulating rod, the second spring is movably inserted in the installation cavity, and one end of the second spring close to the insulating rod is fixedly connected to the inner wall of the installation cavity, under the coordinated action of the plug-in plate and the plug-in slot, the rotation adjustment and fixation of the rotating disk are facilitated, thereby facilitating the convenient adjustment and fixation of the angle of the cutter head body, symmetrically distributed push plates are fixedly installed on both sides of the sliding plate, and a symmetrically arranged second sink groove is provided at one end of the conical transition section away from the insulating rod, the push plate is slidably clamped in the second sink groove, and the sliding plate can be conveniently moved by pushing the push plate, and the setting and use of the second sink groove can ensure the normal movement of the push plate, and can avoid the phenomenon that the push plate hinders the normal use of the electric knife.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The positioning mechanism is used to facilitate the adjustment and fixation of the insulating sleeve position, thereby achieving the purpose of adjusting the length of the handle, thereby meeting the use needs of different medical staff, thereby improving the practicality of the electric knife;

[0012] 2. With the coordinated action of the limit mechanism, the rotating disk and the plug-in slot, the angle of the blade body can be conveniently adjusted and fixed, thus meeting the operational requirements of different surgeries and further improving the practicality of the electrosurgical unit;

[0013] 3. Through the coordinated use of the external thread column and the internal thread hole, the tapered transition section can be easily disassembled and assembled, thereby realizing the convenient disassembly and assembly of the cutter head body, and then facilitating the removal and replacement of the cutter head body after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the installation of the positioning mechanism in the present invention.

[0017] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0018] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0019] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0020] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point D in the middle.

[0021] In the figure: 1. insulating rod; 11. plug-in rod; 12. built-in cavity; 13. fixing hole; 14. sliding groove; 15. limit block; 16. internal threaded hole; 2. insulating sleeve; 21. first sink groove; 22. limit groove; 3. positioning mechanism; 31. pressing rod; 32. pressing plate; 33. fixing rod; 34. plug-in column; 35. plug-in sleeve; 36. first spring; 4. standard joint; 5. tapered transition section; 51. external threaded column; 52. snap-in groove; 53. rotating rod; 54. installation cavity; 55. second sink groove; 6. rotating disk; 61. plug-in groove; 7. cutter head body; 8. limit mechanism; 81. sliding plate; 82. plug-in plate; 83. second spring; 84. push plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1: Figure 1-6As shown, the present invention provides an electric knife for making a mucosal flap through a neuroendoscopic transnasal approach, comprising an insulating rod 1, a plug-in rod 11 is fixedly installed at one end of the insulating rod 1, an insulating sleeve 2 is slidably sleeved on the plug-in rod 11, and an end of the insulating sleeve 2 close to the insulating rod 1 is provided with a positioning mechanism 3 used in conjunction with the plug-in rod 11, and an end of the insulating sleeve 2 away from the insulating rod 1 is fixedly installed with a standard connector 4, and the standard connector 4 adopts an internationally common high-frequency electric knife interface, which is a prior art and is not described in detail here. A conical transition section 5 is detachably provided at the end of the insulating rod 1 away from the insulating sleeve 2, and a rotating disk 6 is rotatably installed at the end of the conical transition section 5 away from the insulating rod 1, a clamping groove 52 is opened at the end of the conical transition section 5 away from the insulating rod 1, and a rotating rod 53 is rotatably inserted in the clamping groove 52, the rotating disk 6 is rotatably sleeved on the rotating rod 53, a cutter head body 7 is fixedly installed on the rotating disk 6, and a limiting mechanism 8 used in conjunction with the rotating disk 6 is provided in the inner cavity of the conical transition section 5.

[0024] The positioning mechanism 3 includes a pressing rod 31, which is slidably inserted at one end of the insulating sleeve 2 close to the insulating rod 1, and the pressing rod 31 is symmetrically structured. The plug-in rod 11 is provided with a built-in cavity 12, and the pressing rod 31 movably penetrates the plug-in rod 11 and is provided with a pressing plate 32 at its end. The pressing plate 32 is movably clamped in the built-in cavity 12, and the top and bottom ends of the opposite sides of the pressing plate 32 are provided with fixing rods 33, and the top and bottom ends of the side walls on both sides of the inner cavity of the built-in cavity 12 are provided with array-distributed fixing holes 13, and the fixing rod 33 can be slidably inserted in the fixing hole 13, and a pressing plate 32 is away from the side of the fixing rod 33. A plug-in column 34 is fixedly installed, and a plug-in sleeve 35 is fixedly installed on one side of the other pressing plate 32 close to the plug-in column 34, and the plug-in column 34 is slidably inserted in the plug-in sleeve 35. The plug-in column 34 and the outer side of the plug-in sleeve 35 are movably sleeved with a first spring 36, and both ends of the first spring 36 are fixedly connected to the pressing plate 32. A symmetrically distributed first groove 21 is provided at one end of the insulating sleeve 2 close to the insulating rod 1, and the pressing rod 31 is slidably inserted in the first groove 21. A symmetrically arranged sliding groove 14 is provided on the plug-in rod 11, and the sliding groove 14 is communicated with the built-in cavity 12, and the pressing rod 31 movably passes through the sliding groove 14.

[0025] By adopting the above technical solution, when in use, the insulating rod 1 can be held and the two groups of pressing rods 31 can be pressed at the same time, so that the two groups of pressing rods 31 can be driven to move toward each other, and then the two groups of pressing plates 32 can be driven to move toward each other, and the first spring 36 can be further squeezed. When the fixing rod 33 is separated from the corresponding fixing hole 13, the medical staff can pull the pressing rod 31 to move to the side away from the insulating rod 1, so that the insulating sleeve 2 can be driven to move to the side away from the insulating rod 1. When the insulating sleeve 2 moves to a suitable position, the pressing rod 31 can be released. At this time, the first spring 36 will drive the pressing plate 32 to move backward, so that the fixing rod 33 can be reset, and then the fixing rod 33 can be inserted into another corresponding fixing hole 13.

[0026] A mirror-distributed limiting block 15 is fixedly mounted on one end of the plug rod 11 away from the insulating rod 1 , and a symmetrically distributed limiting groove 22 is opened on the inner wall of the insulating sleeve 2 , and the limiting block 15 is slidably clamped in the limiting groove 22 .

[0027] By adopting the above technical solution, under the coordinated action of the limiting block 15 and the limiting groove 22, a limiting effect is played on the movement and adjustment of the insulating sleeve 2.

[0028] The limiting mechanism 8 includes a sliding plate 81, an installation cavity 54 is opened inside the conical transition section 5, the sliding plate 81 is slidably clamped in the installation cavity 54, and a plug-in plate 82 is fixedly installed on the side of the sliding plate 81 away from the insulating rod 1, and an array of plug-in slots 61 are opened on the rotating disk 6. The plug-in plate 82 can slide through the conical transition section 5 and be slidably inserted in the plug-in slots 61. A second spring 83 is fixedly installed on the side of the sliding plate 81 close to the insulating rod 1. The second spring 83 is movably inserted in the installation cavity 54, and one end of the second spring 83 close to the insulating rod 1 is fixedly connected to the inner wall of the installation cavity 54.

[0029] By adopting the above technical solution, under the coordinated action of the plug-in plate 82 and the plug-in slot 61, it provides convenience for the rotation adjustment and fixation of the rotating disk 6, thereby providing convenience for the convenient adjustment and fixation of the angle of the cutter head body 7.

[0030] The two sides of the sliding plate 81 are fixedly mounted with symmetrically distributed push plates 84 . The end of the conical transition section 5 away from the insulating rod 1 is provided with symmetrically arranged second sinking grooves 55 , and the push plates 84 are slidably clamped in the second sinking grooves 55 .

[0031] By adopting the above technical solution, the sliding plate 81 can be conveniently moved by pushing the pushing plate 84, and the setting and use of the second sink groove 55 can ensure the normal movement of the pushing plate 84 and avoid the phenomenon that the pushing plate 84 interferes with the normal use of the electric knife.

[0032] Embodiment 2: Figure 5As shown, an internal threaded hole 16 is formed at one end of the insulating rod 1 away from the insulating sleeve 2, and an external threaded column 51 is fixedly installed at one end of the conical transition section 5 close to the insulating sleeve 2 for use with the internal threaded hole 16, and the external threaded column 51 can be threadedly inserted into the internal threaded hole 16.

[0033] By adopting the above technical solution, with the cooperation of the internal threaded hole 16 and the external threaded column 51 , the convenient disassembly and assembly of the tapered transition section 5 is achieved, thereby achieving the convenient disassembly and assembly of the cutter head body 7 .

[0034] Working principle: When in use, the insulating rod 1 and the tapered transition section 5 can be held at the same time and the external thread column 51 can be aligned with the internal thread hole 16, and then the tapered transition section 5 can be turned so that the external thread column 51 can be gradually inserted into the internal thread hole 16;

[0035] Then the insulating rod 1 can be loosened and the two push plates 84 can be pushed to move toward the side close to the insulating rod 1 at the same time, so as to drive the sliding plate 81 to move toward the side close to the insulating rod 1, and then drive the plug-in plate 82 to move toward the side close to the insulating rod 1 and squeeze the second spring 83. When the plug-in plate 82 is separated from the corresponding plug-in slot 61, the medical staff can rotate the cutter head body 7, so as to drive the rotating disk 6 to rotate. When the cutter head body 7 is rotated to a suitable angle, the push plate 84 can be loosened. At this time, the second spring 83 will drive the sliding plate 81 to reset, so as to drive the plug-in plate 82 to reset, and then the plug-in plate 82 can be inserted into another plug-in slot 61.

[0036] When the angle adjustment of the cutter head body 7 is completed, the medical staff can hold the insulating rod 1 and press the two groups of pressing rods 31 at the same time, so as to drive the two groups of pressing rods 31 to move toward each other, and then drive the two groups of pressing plates 32 to move toward each other, and further squeeze the first spring 36. When the fixing rod 33 is separated from the corresponding fixing hole 13, the medical staff can pull the pressing rod 31 to move to the side away from the insulating rod 1, so as to drive the insulating sleeve 2 to move to the side away from the insulating rod 1. When the insulating sleeve 2 moves to a suitable position, the pressing rod 31 can be released. At this time, the first spring 36 will drive the pressing plate 32 to move backward, so as to drive the fixing rod 33 to reset, and then the fixing rod 33 can be inserted into another corresponding fixing hole 13.

[0037] Afterwards, the medical staff can connect the standard connector 4 and use the electric knife to perform surgery. After use, the used knife head body 7 can be removed and the insulating sleeve 2 can be reset.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A neuroendoscopic transnasal mucosal flap production electrosurgical knife, comprising an insulating rod (1), characterized in that: A plug-in rod (11) is fixedly mounted on one end of the insulating rod (1), an insulating sleeve (2) is slidably sleeved on the plug-in rod (11), and an end of the insulating sleeve (2) close to the insulating rod (1) is provided with a positioning mechanism (3) for use with the plug-in rod (11), an end of the insulating sleeve (2) away from the insulating rod (1) is fixedly mounted with a standard joint (4), an end of the insulating sleeve (2) away from the insulating rod (1) is detachably provided with a conical transition section (5), and an end of the conical transition section (5) away from the insulating rod (1) is rotatably mounted with a rotating disk (6), a cutter head body (7) is fixedly mounted on the rotating disk (6), and a limiting mechanism (8) for use with the rotating disk (6) is provided in the inner cavity of the conical transition section (5); The limiting mechanism (8) comprises a sliding plate (81), a mounting cavity (54) is provided inside the conical transition section (5), the sliding plate (81) is slidably mounted in the mounting cavity (54), and a plug-in plate (82) is fixedly mounted on a side of the sliding plate (81) away from the insulating rod (1), the rotating disk (6) is provided with array-distributed plug-in slots (61), the plug-in plate (82) can slide through the conical transition section (5) and be slidably mounted in the plug-in slots (61), a second spring (83) is fixedly mounted on a side of the sliding plate (81) close to the insulating rod (1), the second spring (83) is movably mounted in the mounting cavity (54), and one end of the second spring (83) close to the insulating rod (1) is fixedly connected to the inner wall of the mounting cavity (54); The two sides of the sliding plate (81) are fixedly mounted with symmetrically distributed push plates (84); one end of the conical transition section (5) away from the insulating rod (1) is provided with a symmetrically arranged second sink groove (55); the push plate (84) is slidably clamped in the second sink groove (55).

2. A neuroendoscopic transnasal mucosal flap electrosurgical unit as claimed in claim 1, characterized in that: The positioning mechanism (3) comprises a pressing rod (31), the pressing rod (31) being slidably inserted at one end of the insulating sleeve (2) close to the insulating rod (1), and the pressing rod (31) being of a symmetrical structure, the plug-in rod (11) being provided with an internal cavity (12), the pressing rod (31) being movably inserted through the plug-in rod (11) and having a pressing plate (32) at its end, the pressing plate (32) being movably inserted in the internal cavity (12), and the top and bottom ends of the opposite sides of the pressing plate (32) being provided with fixing rods (33), the top and bottom ends of the side walls on both sides of the internal cavity of the internal cavity (12) being provided with fixing rods (33), Both are provided with fixing holes (13) distributed in an array, the fixing rod (33) can be slidably inserted in the fixing hole (13), a plug-in column (34) is fixedly installed on the side of one pressing plate (32) away from the fixing rod (33), and a plug-in sleeve (35) is fixedly installed on the side of the other pressing plate (32) close to the plug-in column (34), and the plug-in column (34) is slidably inserted in the plug-in sleeve (35), and a first spring (36) is movably sleeved on the outer sides of the plug-in column (34) and the plug-in sleeve (35), and both ends of the first spring (36) are fixedly connected to the pressing plate (32).

3. A neuroendoscopic transnasal mucosal flap electrosurgical unit as claimed in claim 2, characterized in that: The insulating sleeve (2) is provided with a symmetrically distributed first recessed groove (21) at one end close to the insulating rod (1), the pressing rod (31) is slidably inserted in the first recessed groove (21), the plug-in rod (11) is provided with a symmetrically arranged sliding groove (14), and the sliding groove (14) is connected to the built-in cavity (12), and the pressing rod (31) movably passes through the sliding groove (14).

4. The electrosurgical knife for making a mucosal flap through a neuroendoscopic transnasal approach as claimed in claim 1, characterized in that: A mirror-distributed limit block (15) is fixedly mounted on one end of the plug rod (11) away from the insulating rod (1), and symmetrically distributed limit grooves (22) are provided on the inner wall of the insulating sleeve (2), and the limit block (15) is slidably clamped in the limit groove (22).

5. The electrosurgical knife for making a mucosal flap through a neuroendoscopic transnasal approach as claimed in claim 1, characterized in that: An internal threaded hole (16) is formed at one end of the insulating rod (1) away from the insulating sleeve (2), and an external threaded column (51) for use with the internal threaded hole (16) is fixedly mounted at one end of the tapered transition section (5) close to the insulating sleeve (2), and the external threaded column (51) can be threadedly inserted into the internal threaded hole (16).

6. The electrosurgical knife for making a mucosal flap through a neuroendoscopic transnasal approach as claimed in claim 1, characterized in that: A clamping groove (52) is formed at one end of the conical transition section (5) away from the insulating rod (1), and a rotating rod (53) is rotatably inserted into the clamping groove (52), and the rotating disk (6) is rotatably sleeved on the rotating rod (53).

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