Multifunctional electrotome pen

Abstract

The invention discloses a multifunctional electric knife pen which comprises a high-frequency signal generator connecting interface, a cable assembly, an operation handle assembly and a disposable operation electrode tip installed on an operation handle, and the operation electrode tip comprises an electrode connecting handle, an electrode knife head and a quick connecting structure. The electrode connecting handle is used for being connected with the surgical handle; the electrode tool bit is provided with at least two interchangeable geometric configurations; and the quick connecting structure is used for mechanically fixing and electrically conducting the electrode tool bit and the electrode connecting handle. According to the multifunctional electrotome pen, the use convenience can be improved, meanwhile, the cost is reduced, meanwhile, operation smoke can be treated to a certain degree, and the occupational exposure risk of medical staff is reduced.

Description

Technical Field

[0001] The invention specifically relates to a multifunctional electric knife pen. Background Art

[0002] High-frequency electrosurgical pen is a surgical consumable widely used in the medical field. It is mainly used in surgical operations. It generates Joule heating effect in biological tissues through high-frequency alternating current (frequency range 300kHz-3MHz), achieving complex functions such as tissue cutting, coagulation, ablation and hemostasis. According to ISO 60601-2-2 medical electrical equipment standard, its working performance is directly related to the efficiency of intraoperative bleeding control and the accuracy of thermal damage range control.

[0003] The high-frequency electrosurgical pen is mainly composed of plug-in terminals, cables, surgical handles and disposable surgical electrode heads installed on the surgical handles. The surgical handle is usually composed of a shell (such as ABS plastic), a circuit board and a finger-press switch button. The surgical electrode is made of environmentally friendly stainless steel materials. The existing high-frequency electrosurgical pen has the following problems:

[0004] 1. Resource waste caused by insufficient modularization of electrode head functions:

[0005] Existing surgical electrode tips are disposable, and their functional end geometry (such as blade width, curvature radius, etc.) has a strong need to be compatible with the target surgical procedure. For example: in open surgery, wide-blade electrodes (blade width > 3mm) can achieve rapid linear cutting, while in microsurgery, micro-tip electrodes (tip curvature radius ≤ 0.2mm) are required for precise ablation. Clinical practice shows (see "Surgical Endoscopy" 2021; 35(4): 1782-1791) that the electrode tip configuration needs to be replaced an average of 2.3 times in a single operation, resulting in more than 90% of the non-functional material being redundantly discarded;

[0006] 2. Efficiency defects of surgical smoke purification system:

[0007] During the tissue vaporization process, high-frequency electrosurgical knife produces aerosols containing biological toxic components (particle size distribution 0.1-10um). GC-MS analysis shows that its components include benzene (such as toluene concentration of 45ug / m3), polycyclic aromatic hydrocarbons (benzo[a]pyrene equivalent value>2.1ng / m3) and active virus particles (such as HPV DNA detection rate 37.2%). The current smoke treatment scheme mostly uses negative pressure suction combined with coarse filtration (such as patent EP3560456B1), but there are two major technical bottlenecks: 1) The suction flow rate (<15L / min) does not match the smoke generation rate (about 22L / min in minimally invasive surgery), resulting in a smoke escape rate of >40%; 2) The filter unit is only equipped with a G4-level primary filter (retention efficiency <75%@0.3um), which cannot effectively remove submicron-level harmful substances, and lacks an active component chemical adsorption module, resulting in postoperative filter residues that are still biologically hazardous.

[0008] The above-mentioned technical bottlenecks seriously restrict the effectiveness of high-frequency electrosurgical pen in complex surgical procedures and bring significant occupational exposure risks. Summary of the invention

[0009] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a multifunctional electric surgical pen that can improve ease of use while reducing costs, and can also process surgical smoke to a certain extent, thereby reducing the occupational exposure risk to medical staff.

[0010] In order to achieve the above object, the present invention is implemented by the following technical solution: a multifunctional electric surgical pen, including a high-frequency signal generator connection interface, a cable assembly, a surgical handle assembly and a disposable surgical electrode head installed on the surgical handle, characterized in that the surgical electrode head includes:

[0011] An electrode connecting handle, the electrode connecting handle is used to connect with the surgical handle;

[0012] An electrode tip having at least two interchangeable geometric configurations; and

[0013] The quick connection structure is used to mechanically fix and electrically connect the electrode blade head and the electrode connecting handle.

[0014] Furthermore, the quick connection structure includes a connection base, a plug-in terminal and a locking assembly. The connection base is fixed to the end of the electrode connection handle and is provided with an annular conductive contact. The plug-in terminal is fixed to the end of the electrode blade head and is provided with an axially arranged elastic contact piece. The size of the plug-in terminal is adapted to the inner cavity size of the connection base and can be plugged into the connection base. The locking assembly can connect and fix the plug-in terminal to the connection base so that the electrode connection handle and the electrode blade head are electrically conductive through the annular conductive contact and the elastic contact piece.

[0015] Furthermore, the locking assembly includes a limit boss and a hook, and the limit boss and the hook are respectively arranged on the connecting base and the plug-in terminal. The end face of the limit boss away from the hook has an involute guide surface. When the connecting base is plugged into the plug-in terminal, the connecting base or the plug-in terminal is rotated, and the hook can be clamped on the limit boss along the guide surface to connect and fix the electrode connecting handle and the electrode bit and put them in electrical conduction.

[0016] Furthermore, it also includes an integrated smoke treatment system, which is arranged on the electrode connecting handle and is used to absorb the smoke generated by the electrode cutter head during operation.

[0017] Furthermore, it also includes an insulating telescopic sleeve, which is fixed on the surgical handle and located near the end of the electrode connecting handle. The insulating telescopic sleeve can be extended and retracted along the axial direction of the surgical handle, and the smoke treatment system is arranged on the insulating telescopic sleeve.

[0018] Furthermore, the insulating telescopic sleeve comprises an insulating fixed ring, a telescopic insulating sleeve, an insulating movable ring and an insulating telescopic rod. The insulating fixed ring is fixed on the surgical handle, the telescopic insulating sleeve is connected between the insulating fixed ring and the insulating movable ring, there are multiple insulating telescopic rods, and the multiple insulating telescopic rods are connected between the insulating fixed ring and the insulating movable ring at circumferential intervals. The length of the insulating telescopic rod is adjustable.

[0019] Furthermore, the insulating telescopic rod includes a locking piece and a sleeve rod and an insertion rod that are plugged into each other, the ends of the sleeve rod and the insertion rod are respectively connected to the insulating fixed ring and the insulating movable ring, and the locking piece is fixed on the sleeve rod to lock and fix the sleeve rod and the insertion rod.

[0020] Furthermore, the smoke treatment system includes an adsorption hood, a filtering system and an adsorption host. The adsorption hood is annular and is mounted and fixed on the insulating movable ring. The end face of the adsorption hood close to the electrode connecting handle is provided with a plurality of smoking holes connected to its inner cavity. The adsorption host is fixed on the electrode connecting handle. The adsorption host and the adsorption hood are connected through a pipeline. The filtering system is arranged in the adsorption hood and is located on the airflow flow line in the adsorption hood. When the adsorption host is started, the gas entering from the smoking hole passes through the filtering system and then enters the pipeline and finally enters the adsorption host.

[0021] Furthermore, the adsorption cover is threadedly connected to the insulating telescopic sleeve.

[0022] Furthermore, the filtration system includes a bag filter, and a metal filter and a HEPA filter arranged on both sides of the bag filter, and the filter is located on a side close to the smoking hole.

[0023] Beneficial effects of the present invention:

[0024] When using the above-mentioned multifunctional electrosurgical pen, the electrode connecting handle is connected to the surgical handle assembly in the same manner as a traditional multifunctional electrosurgical pen, and then an electrode blade head of a suitable shape is selected according to the required surgical situation. After the electrode blade head and the electrode connecting handle are mechanically fixed and electrically connected through the quick connection structure, the surgical operation can be performed. During the operation, when it is necessary to replace the electrode blade head of a different shape, first turn off the power through the switch button of the surgical handle assembly, and then unlock the connection between the electrode connecting handle and the electrode blade head, remove the original electrode blade head, and install the new electrode blade head in the same manner.

[0025] By using the above-mentioned multifunctional electrosurgical pen, the electrode connecting handle can be reused during the operation, which can significantly reduce the cost of the operation. At the same time, since electrode blades of various shapes are provided, the scope of use of the multifunctional electrosurgical pen can be greatly expanded, thereby greatly improving the convenience of doctors and reducing operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0027] Figure 1 A schematic diagram of a multifunctional electric surgical pen provided by an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram showing a state in which the insulating telescopic sleeve of a multifunctional electric surgical pen is stretched;

[0029] Figure 3 for Figure 1 A schematic diagram of an electrode blade head in a multifunctional electrosurgical pen is shown;

[0030] Figure 4 for Figure 1 A schematic diagram of a limiting boss in a multifunctional electric surgical pen is shown;

[0031] Figure 5 for Figure 1 A schematic diagram of a filtering system in a multifunctional electrosurgical pen is shown;

[0032] Figure 6 for Figure 1The end face schematic diagram of an adsorption cover in a multifunctional electric surgical pen is shown;

[0033] Reference numerals:

[0034] 100. Electrode connecting handle; 200. Electrode blade; 300. Quick connection structure; 310. Connection base; 320. Plug terminal; 330. Locking assembly; 331. Limiting boss; 332. Hook; 400. Smoke treatment system; 410. Adsorption hood; 411. Smoking hole; 420. Filter system; 430. Adsorption host; 500. Insulating telescopic sleeve; 510. Insulating fixing ring; 520. Telescopic insulating sleeve; 530. Insulating movable ring; 540. Insulating telescopic rod. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the invention is not limited by the specific implementation disclosed below.

[0036] See also Figures 1 to 6 The present invention provides a multifunctional electric surgical pen, including a high-frequency signal generator connection interface, a cable assembly, a surgical handle assembly and a disposable surgical electrode head installed on the surgical handle, the surgical electrode head including an electrode connecting handle 100, an electrode blade head 200 and a quick connection structure 300.

[0037] Specifically, the electrode connection handle 100 is used to connect with the surgical handle. The electrode blade head 200 has at least two interchangeable geometric configurations, such as a wide blade type, a pointed cone type, a ball type, etc. The quick connection structure 300 is used to mechanically fix and electrically connect the electrode blade head 200 to the electrode connection handle 100.

[0038] When in use, the electrode connecting handle 100 is connected to the surgical handle assembly in the same manner as a traditional multifunctional electrosurgical pen, and then an electrode head 200 of a suitable shape is selected according to the required surgical situation. After the electrode head 200 and the electrode connecting handle 100 are mechanically fixed and electrically connected through the quick connection structure 300, the surgical operation can be performed. During the operation, when it is necessary to replace the electrode head 200 with another shape, first turn off the power through the switch button of the surgical handle assembly, and then unlock the connection between the electrode connecting handle 100 and the electrode head 200, remove the original electrode head 200, and install the new electrode head 200 in the same manner.

[0039] By using the above-mentioned multifunctional electrosurgical pen, the electrode connecting handle 100 can be reused during the operation, which can significantly reduce the cost of the operation. At the same time, since the electrode blade head 200 of various shapes is provided, the use range of the multifunctional electrosurgical pen can be greatly expanded, thereby greatly improving the convenience of the doctor and reducing the operation time.

[0040] See also Figure 1 , 3 4. In the present embodiment, the quick connection structure 300 includes a connection base 310, a plug-in terminal 320 and a locking assembly 330. The connection base 310 is fixed to the end of the electrode connection handle 100 and is provided with an annular conductive contact. The plug-in terminal 320 is fixed to the end of the electrode cutter head 200 and is provided with an axially arranged elastic contact sheet. The size of the plug-in terminal 320 is adapted to the inner cavity size of the connection base 310 and can be plugged into the connection base 310. The locking assembly 330 can connect and fix the plug-in terminal 320 to the connection base 310 so that the electrode connection handle 100 and the electrode cutter head 200 are in electrical conduction through the annular conductive contact and the elastic contact sheet.

[0041] Specifically, the locking assembly 330 includes a limiting boss 331 and a hook 332, and the limiting boss 331 and the hook 332 are respectively arranged on the connecting base 310 and the plug-in terminal 320. The end face of the limiting boss 331 away from the hook 332 has an involute guide surface. When the connecting base 310 and the plug-in terminal 320 are plugged in, the connecting base 310 or the plug-in terminal 320 is rotated, and the hook 332 can be clamped on the limiting boss 331 along the guide surface to connect and fix the electrode connecting handle 100 and the electrode bit 200 and put them in electrical conduction.

[0042] See also Figure 1 and Figure 2 The quick connection structure 300 adopts this method, through the involute guide surface, is convenient for connection and disassembly, and is also firmly connected. Of course, the convenience of the doctor's operation is greatly improved. Of course, in other embodiments, the quick connection structure 300 can also adopt other connection structures, such as: elastic buckle structure, threaded connection structure, etc.

[0043] As a preferred embodiment, the multifunctional electrosurgical pen also includes an integrated smoke treatment system 400, which is arranged on the electrode connecting handle 100 and is used to absorb the smoke generated by the electrode cutter head 200 during operation, reduce the harm of surgical smoke to medical staff, and reduce the occupational exposure risk of medical staff.

[0044] Please refer to the mechanical Figure 1 and Figure 2As a more preferred embodiment, the multifunctional electric surgical pen further includes an insulating telescopic sleeve 500. The insulating telescopic sleeve 500 is fixed on the surgical handle and is located near the end of the electrode connecting handle 100. The insulating telescopic sleeve 500 can be extended and retracted along the axial direction of the surgical handle, and the smoke treatment system 400 is arranged on the insulating telescopic sleeve 500. When in use, the position of the insulating telescopic sleeve 500 can be adjusted according to the length of the electrode blade 200, thereby adjusting the distance between the integrated smoke treatment system 400 and the end of the electrode blade 200 to improve the smoking effect. In addition, since the insulating telescopic sleeve 500 is insulated, it can prevent leakage and further protect the safety of doctors or patients.

[0045] Specifically, the insulating telescopic sleeve 500 includes an insulating fixed ring 510, a telescopic insulating sleeve 520, an insulating movable ring 530 and an insulating telescopic rod 540. The insulating fixed ring 510 is sleeved and fixed on the surgical handle, and the telescopic insulating sleeve 520 is connected between the insulating fixed ring 510 and the insulating movable ring 530. In specific implementation, the telescopic insulating sleeve 520 can select a foldable insulating sleeve commonly used in the prior art. There are multiple insulating telescopic rods 540, and the multiple insulating telescopic rods 540 are connected between the insulating fixed ring 510 and the insulating movable ring 530 at circumferential intervals, and the length of the insulating telescopic rods 540 is adjustable. In the process of driving the insulating telescopic sleeve 500 to telescope, the insulating telescopic rods 540 can serve the purpose of guiding and preventing the insulating movable ring 530 from twisting.

[0046] When in use, when the length of the insulating telescopic sleeve 500 needs to be adjusted, it is only necessary to axially pull the insulating movable ring 530 .

[0047] Specifically, the insulating telescopic rod 540 includes a locking piece and a sleeve rod and an insertion rod that are plugged into each other. The ends of the sleeve rod and the insertion rod are respectively connected to the insulating fixed ring 510 and the insulating movable ring 530. The locking piece is fixed on the sleeve rod and can lock and fix the sleeve rod and the insertion rod. When in use, when the length of the insulating telescopic sleeve 500 needs to be adjusted, the locking piece is first loosened, and then the insulating movable ring 530 is pulled. When the insulating movable ring 530 is adjusted to the required position, the locking piece is released.

[0048] Please also see Figure 5 and Figure 6In this embodiment, the smoke treatment system 400 includes an adsorption hood 410, a filter system 420 and an adsorption main unit 430. The adsorption hood 410 is annular and is fixedly mounted on the insulating movable ring 530. The end surface of the adsorption hood 410 close to the electrode connecting handle 100 is provided with a plurality of smoking holes 411 connected to the inner cavity thereof. The adsorption main unit 430 is fixed on the electrode connecting handle 100. The adsorption main unit 430 and the adsorption hood 410 are connected through a pipeline. The filter system 420 is arranged in the adsorption hood 410 and is located on the air flow line in the adsorption hood 410. When the adsorption main unit 430 is started, the gas entering from the smoking hole 411 passes through the filter system 420 and enters the pipeline, and finally enters the adsorption main unit 430. In this way, the adsorption hood 410 can be close to the end of the electrode blade head 200 as much as possible, thereby improving the smoking effect.

[0049] In a specific implementation, the adsorption cover 410 is threadedly connected to the insulating telescopic sleeve 500, which facilitates the installation of the adsorption cover 410. In addition, the adsorption cover 410 can be opened in a convenient manner, and the filter system 420 can be replaced as needed.

[0050] In this embodiment, the filter system 420 includes a bag filter, and a metal filter and a HEPA filter arranged on both sides of the bag filter, and the filter is located on the side close to the smoking hole 411.

[0051] In specific implementation, the metal filter can be a metal filter stainless steel sintered filter with a pore size less than or equal to 100 μm; the HEPA filter can be an H13 grade HEPA filter paper with a filtration efficiency of ≥99.97% for 0.3 μm particles.

[0052] How to use the above multifunctional electric knife pen:

[0053] When in use, the electrode connecting handle 100 is connected to the surgical handle assembly in the same manner as a conventional multifunctional electrosurgical pen, and then an electrode blade 200 of a suitable shape is selected according to the required surgical situation, and is connected and fixed to the electrode connecting handle 100, and then the locking piece is unlocked, and the insulating movable ring 530 is pulled to move the insulating movable ring 530 toward the end of the electrode blade 200 so that the adsorption cover 410 is close to the end of the electrode blade 200, and then the locking piece is locked, and relevant surgical operations can be performed; during the operation, when it is necessary to replace the electrode blade 200 of another shape, first turn off the power, then unlock the locking piece, and then drive the insulating movable ring 530 backward, and then, reversely rotate the electrode blade 200 to remove the electrode blade 200, and then install a new electrode blade 200 in the same manner.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A multifunctional electrosurgical pen, comprising a high-frequency signal generator connection interface, a cable assembly, a surgical handle assembly and a disposable surgical electrode head mounted on the surgical handle, characterized in that: The surgical electrode head comprises: An electrode connecting handle, the electrode connecting handle is used to connect with the surgical handle; An electrode tip having at least two interchangeable geometric configurations; and The quick connection structure is used to mechanically fix and electrically connect the electrode blade head and the electrode connecting handle.

2. The multifunctional electric knife pen according to claim 1, characterized in that: The quick connection structure includes a connection base, a plug-in terminal and a locking assembly. The connection base is fixed to the end of the electrode connection handle and is provided with an annular conductive contact. The plug-in terminal is fixed to the end of the electrode blade head and is provided with an axially arranged elastic contact piece. The size of the plug-in terminal is adapted to the inner cavity size of the connection base and can be plugged into the connection base. The locking assembly can connect and fix the plug-in terminal to the connection base so that the electrode connection handle and the electrode blade head are in electrical conduction through the annular conductive contact and the elastic contact piece.

3. The multifunctional electric knife pen according to claim 2, characterized in that: The locking assembly includes a limiting boss and a hook, and the limiting boss and the hook are respectively arranged on the connecting base and the plug-in terminal. The end face of the limiting boss away from the hook has an involute guide surface. When the connecting base is plugged into the plug-in terminal, the connecting base or the plug-in terminal is rotated, and the hook can be clamped on the limiting boss along the guide surface to connect and fix the electrode connecting handle and the electrode bit and put them in electrical conduction.

4. The multifunctional electric surgical pen according to claim 1, characterized in that: It also includes an integrated smoke treatment system, which is arranged on the electrode connecting handle and is used to absorb the smoke generated by the electrode cutter head during operation.

5. The multifunctional electric surgical pen according to claim 4, characterized in that: It also includes an insulating telescopic sleeve, which is fixed on the surgical handle and located near the end of the electrode connecting handle. The insulating telescopic sleeve can be extended and retracted along the axial direction of the surgical handle, and the smoke treatment system is arranged on the insulating telescopic sleeve.

6. The multifunctional electric surgical pen according to claim 5, characterized in that: The insulating telescopic sleeve comprises an insulating fixed ring, a telescopic insulating sleeve, an insulating movable ring and an insulating telescopic rod. The insulating fixed ring is fixed on the surgical handle, the telescopic insulating sleeve is connected between the insulating fixed ring and the insulating movable ring, there are multiple insulating telescopic rods, and the multiple insulating telescopic rods are connected between the insulating fixed ring and the insulating movable ring at circumferential intervals. The length of the insulating telescopic rod is adjustable.

7. The multifunctional electric surgical pen according to claim 6, characterized in that: The insulating telescopic rod comprises a locking piece and a sleeve rod and an insertion rod which are plugged into each other. The ends of the sleeve rod and the insertion rod are respectively connected to the insulating fixed ring and the insulating movable ring. The locking piece is fixed on the sleeve rod and can lock and fix the sleeve rod and the insertion rod.

8. The multifunctional electric surgical pen according to claim 6, characterized in that: The smoke treatment system includes an adsorption hood, a filtering system and an adsorption host. The adsorption hood is annular and is mounted and fixed on the insulating movable ring. The end face of the adsorption hood close to the electrode connecting handle is provided with a plurality of smoking holes connected to the inner cavity thereof. The adsorption host is fixed on the electrode connecting handle. The adsorption host and the adsorption hood are connected through a pipeline. The filtering system is arranged in the adsorption hood and is located on the airflow flow line in the adsorption hood. When the adsorption host is started, the gas entering from the smoking hole passes through the filtering system and then enters the pipeline and finally enters the adsorption host.

9. The multifunctional electric surgical pen according to claim 8, characterized in that: The adsorption cover is threadedly connected to the insulating telescopic sleeve.

10. The multifunctional electric surgical pen according to claim 8, characterized in that: The filtering system comprises a bag filter, and a metal filter and a HEPA filter arranged on both sides of the bag filter, and the filter is located on a side close to the smoking hole.

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