Plasma scalpel
By improving the press-type operation design of the plasma scalpel, the problems of hand pinching and poor force distribution have been solved, achieving safer, more comfortable and precise surgical control, and improving the stability and effectiveness of surgical operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BONSS MEDICAL TECH
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-10
AI Technical Summary
Existing portable plasma scalpels are prone to pinching the operator's fingers during use, and the force applied when squeezing the handle is not effective, affecting the accuracy and stability of the operation.
It adopts a press-type operation mode, and replaces the traditional squeeze handle with a combination design of press block, connecting rod, movable block and elastic reset component. Combined with limit plate and guide component to limit the movement path of tool bar, it achieves precise and stable control.
It effectively avoids the problem of hand pinching at the handle hinge, improving the safety and comfort of surgical operations, and achieves more precise and stable control by exerting force with the whole palm, thus optimizing surgical performance.
Smart Images
Figure CN224099445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biomedical engineering technology, specifically to a plasma surgical scalpel. Background Technology
[0002] Percutaneous endoscopic discectomy is a minimally invasive spinal surgery technique. Its routine procedures include discectomy, annulus fibrosus removal, unilateral double-channel spinal endoscopy (UBE), and interbody fusion, and it is widely used to treat a variety of spinal diseases.
[0003] In clinical practice, a portable plasma scalpel is widely used in percutaneous endoscopic discectomy (PED). This scalpel is equipped with a hinged handle, with the front and rear handles connected by a hinge. Both the front and rear handles have through holes. Before performing surgery, the front and rear handles must be fixed to the front and rear sleeves of the scalpel via these through holes. During the procedure, medical personnel can freely extend and retract the scalpel tip by squeezing the handles, allowing for more precise manipulation.
[0004] However, in practical applications, the design of this handle has some problems. Specifically, during use, the hinge between the front and rear handles can easily pinch the operator's fingers, thus affecting the smooth progress of the surgery. In addition, the force applied when squeezing the handle can be improved, which may adversely affect the accuracy and stability of the operation. Utility Model Content
[0005] The purpose of this invention is to provide a plasma scalpel to solve the problems of existing portable plasma scalpels that easily pinch the operator's fingers and have poor force distribution when squeezing the handle, which adversely affect the accuracy and stability of the operation.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0007] A plasma scalpel includes a pressing block and a handle housing. A pressing block pivot is located inside the handle housing. One end of the pressing block is connected to the handle housing via the pivot, and the other end is connected to a movable block via a connecting rod. The movable block is connected to the inside of the handle housing via an elastic reset element.
[0008] Furthermore, the movable block includes a cylindrical segment and a frustum segment that is integrally connected to the cylindrical segment. One end of the elastic reset member is connected to the frustum segment, and the other end of the elastic reset member is connected to the third guide member, which is located inside the handle housing.
[0009] Further, the knife rod comprises an insulating inner rod and an outer tube, the outer tube is sleeved outside the insulating inner rod, two channels are arranged inside the insulating inner rod, and the outer tube is connected to the cylindrical section of the movable block at one end close to the handle shell.
[0010] Further, the knife head comprises two symmetrical electrodes, an insulating sheet is arranged between the two electrodes, and a conductive wire is connected to each of the two electrodes of the knife head and extends out of the front end of the two channels of the insulating inner rod.
[0011] Further, the first guide, the second guide and the third guide are arranged on the same central axis, the first guide is in the form of a rectangular block with a circular hole in the center.
[0012] Further, a sliding limiting pin is arranged on the movable block, and a sliding limiting groove is arranged on the inner side of the handle shell, and the sliding limiting pin and the sliding limiting groove are in sliding cooperation.
[0013] Further, the limiting plate is arranged on the top of the pressing block away from the rotating shaft of the pressing block, and the limiting plate is lapped on the outer side of the handle shell when the pressing block is in the pressing state.
[0014] Further, the limiting plate is in the form of a semicircular protrusion.
[0015] Further, the pressing block is in the form of a triangular block, the outer side of the pressing block is in the form of a smooth chamfer structure, and the outer side surface of the pressing block has an arc.
[0016] The utility model has the following beneficial effects:
[0017] The utility model improves the problems existing in the handle of the plasma scalpel in the prior art. By changing the original extrusion type operation mode into a pressing type operation mode, the phenomenon of hand clamping caused by improper design of the handle hinge during the operation process is effectively avoided, and the safety and comfort of the operation process are significantly improved. In addition, the pressing type operation design of the utility model allows the operator to exert force with the whole palm, thereby realizing more accurate and stable control during the operation process, and further optimizing the performance and effect of the operation process. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a sectional view of a plasma scalpel structure.
[0019] Figure 2 It is a whole structure diagram of a plasma scalpel.
[0020] Figure 3 It is a structure schematic diagram of a handle shell of a plasma scalpel.
[0021] Figure 4 It is Figure 1Structure schematic view of the middle A.
[0022] Figures 1 to 4 The reference signs shown in the middle respectively represent: 1-pressing block, 2-limiting plate, 3-handle shell, 4-connecting rod, 5-first guide, 6-second guide, 7-third guide, 8-sliding limiting pin, 9-sliding limiting groove, 10-pressing block rotating shaft, 11-cutter bar, 12-cutter head, 13-moving block, 14-elastic reset member, 15-cylinder segment, 16-circular table segment. DETAILED DESCRIPTION
[0023] The technical scheme of the utility model is clearly and completely described below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0024] As Figure 1 shown, a kind of plasma scalpel, including pressing block 1, handle shell 3, handle shell 3 inside is provided with pressing block rotating shaft 10, pressing block 1 one end is connected with handle shell 3 by pressing block rotating shaft 10, pressing block 1 other end is connected to moving block 13 by connecting rod 4, moving block 13 is connected to handle shell 3 inside by elastic reset member 14, the working principle of the utility model is same with existing plasma scalpel, by ionized gas generates plasma, utilize its high energy precision cutting tissue and hemostasis, but provide a new plasma scalpel control mechanism, it is convenient for user to realize more accurate and stable control during operation.
[0025] Specifically, pressing block 1 adopts triangular block structure, its outside is treated by smooth chamfer and forms cambered surface profile. The cambered surface profile fits hand anatomy structure, significantly improves operation comfort. Limiting plate 2 is additionally arranged at the top of the end of pressing block 1 away from rotating shaft 10, the limiting plate is designed as semicircular convex. When pressing to maximum stroke, limiting plate 2 is in abutment with the outside of handle shell 3, effectively prevents internal component damage caused by excessive pressing by mechanical interference.
[0026] As Figure 2 shown, cutter bar 11 includes insulated inner rod and outer tube, outer tube is sleeved on the outside of insulated inner rod, the inside of insulated inner rod is provided with two passages, the end of cutter bar 11 close to handle shell 3 is connected to the cylinder end of moving block 13, cutter head 12 includes two symmetrical electrodes, insulating sheet is arranged between the two electrodes, two electrodes are respectively connected with conducting wire, conducting wire respectively extends from the front end of two passages of cutter bar 11, two electrodes are isolated by insulating sheet, and respectively connected with conducting wire extended into cutter bar passage. This structure guarantees the transmission efficiency of energy, and also realizes accurate ionization control.
[0027] As Figure 4 shown, the movable block 13 includes a cylindrical segment 15 and a circular table segment 16 connected to the cylindrical segment 15 as an integral structure, the elastic reset member 14 is connected to the circular table segment 16 at one end, the other end of the elastic reset member 14 is connected to the third guide 7 which is located inside the handle shell 3, the movable block 13 is provided with a sliding limiting pin 8, the inner side of the handle shell 3 is provided with a sliding limiting groove 9, the sliding limiting groove 9 is located at the position Figure 3 , the sliding limiting pin 8 and the sliding limiting groove 9 are in sliding fit. The rear end of the cutter bar 11 passes through the three guides in turn, which can effectively limit the movement path of the cutter bar 11 when in use, avoiding the cutter bar 11 from deviating in the non-axial direction thereof.
[0028] The specific working process of the utility model is as follows:
[0029] During use, the operator presses the pressing block 1 downward (the pressing degree can be flexibly adjusted according to actual requirements), drives the connecting rod 4 to drive the movable block 13 to move axially. This action further pulls the cutter bar 11 to retract backward, so that the cutter head 12 at the front end gradually emerges. By accurately controlling the displacement length of the cutter bar 11, the exposure degree of the electrode of the cutter head 12 can be adjusted, so as to adapt to the cutting requirements of different tissues and realize precise operation.
[0030] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A plasma scalpel, characterized by, It includes pressing block (1), handle shell (3), handle shell (3) inside be provided with pressing block pivot (10), one end of the pressing block (1) is connected with handle shell (3) through pressing block pivot (10), the other end of the pressing block (1) is connected to movable block (13) through connecting rod (4), the movable block (13) is connected to the inside of handle shell (3) through elastic reset piece (14).
2. The electrosurgical scalpel of claim 1, wherein, The movable block (13) includes a cylindrical segment (15) and a circular segment (16) connected as an integral structure with the cylindrical segment (15), one end of the elastic reset piece (14) is connected to the circular segment (16), the other end of the elastic reset piece (14) is connected to the third guide (7), and the third guide (7) is located in the inside of the handle shell (3).
3. The electrosurgical scalpel of claim 1, wherein, It also includes a knife rod (11), the knife rod (11) includes an insulated inner rod and an outer tube, the outer tube is sleeved on the outside of the insulated inner rod, two channels are provided in the inside of the insulated inner rod, and the outer tube is connected to the cylindrical segment of the movable block (13) at one end close to the handle shell (3).
4. The electrosurgical scalpel of claim 3, wherein, It also includes a tool bit (12), the tool bit (12) includes two symmetrical electrodes, an insulating sheet is provided between the two electrodes, and a conductive wire is connected to each of the two electrodes of the tool bit (12), respectively, and the conductive wire extends out from the front end of the two channels of the insulated inner rod.
5. The electrosurgical scalpel of claim 2, wherein, It also includes a first guide (5) and a second guide (6), the center lines of the first guide (5), the second guide (6) and the third guide (7) are located on the same central axis, the first guide (5) is a rectangular block structure, and a circular hole is formed in the center.
6. The electrosurgical scalpel of claim 1, wherein, The movable block (13) is provided with a sliding limiting pin (8), the inside of the handle shell (3) is provided with a sliding limiting groove (9), and the sliding limiting pin (8) and the sliding limiting groove (9) are in sliding cooperation.
7. The electrosurgical knife of claim 1, wherein, It also includes a limiting plate (2), the limiting plate (2) is arranged on the top of the pressing block (1) away from the pressing block pivot (10), when the pressing block (1) is in the pressing state, the limiting plate (2) is overlapped on the outside of the handle shell (3).
8. The electrosurgical scalpel of claim 7, wherein, The limiting plate (2) is a semicircular protrusion.
9. The electrosurgical knife of claim 1, wherein, The pressing block (1) is a triangular block structure, the outside of the pressing block (1) is a smooth chamfer structure, and the outside surface has an arc.