Visual plasma knife

Abstract

The utility model relates to a visual plasma knife which comprises a handle, an endoscope tube connected with the handle, an inclined plane block connected with one end, far away from the handle, of the endoscope tube and an electrode arranged towards the inclined plane of the inclined plane block, and the inclined plane is arranged towards the endoscope tube. And the electrode is driven to slide along the inclined plane and protrude out of the inclined plane block. Due to the arrangement of the inclined plane block, when the electrode and the endoscope tube enter a human body, the electrode retracts towards the endoscope tube, and the electrode does not protrude out of the inclined plane block, so that the electrode does not cause accidental injury to human tissues. When reaching an operation position, the electrode can slide along the inclined plane of the inclined plane block and can protrude out of the inclined plane block by driving the electrode, the electrode protruding out of the inclined plane block is used for cutting human tissue, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a visual plasma knife. BACKGROUND

[0002] At present, plasma knives are often used for surgical operations in surgical operations, and the plasma knives emit high-speed plasma during use, which breaks the molecular bonds of human body tissues, so as to achieve the purpose of cutting and ablation of human body tissues.

[0003] The existing plasma knife usually integrates a camera and a lighting function, so that in some minimally invasive surgeries, the plasma knife head is inserted into the human body from a smaller wound, and the camera and the lighting device arranged at the knife head are used to operate the knife head in the human body for surgical operations.

[0004] However, in the existing visual plasma knife with a camera and a lighting device, the electrode of the plasma knife is usually arranged at the end of the endoscope tube, and the endoscope tube and the electrode are inserted into the human body from the wound together, and the tip of the electrode is usually arranged protruding from the endoscope tube in order to facilitate the cutting of human body tissues, so that the electrode is likely to cause injury to human body tissues during the insertion of the endoscope tube into the human body. SUMMARY

[0005] In view of the problems existing in the prior art, the utility model aims to provide a visual plasma knife to avoid injury to human body tissues by the electrode.

[0006] The utility model discloses the purpose that realizes through the following technical scheme:

[0007] A visual plasma knife, comprising a handle, an endoscope tube connected with the handle, a bevel block connected with the end of the endoscope tube away from the handle, and an electrode arranged on the bevel of the bevel block, wherein the bevel is arranged towards the endoscope tube; the electrode is driven to slide along the bevel and protrude from the bevel block.

[0008] Further, the projection of the bevel block on the radial section plane of the endoscope tube is in the radial section plane of the endoscope tube.

[0009] Further, an electrode groove is arranged on the bevel, and the electrode is arranged in the electrode groove.

[0010] Further, the utility model further comprises a driving mechanism arranged on the handle, a transmission mechanism connected with the driving mechanism, the transmission mechanism is connected with the electrode, the electrode comprises a flexible member and a metal layer wrapped outside the flexible member, and the flexible member is connected with the transmission mechanism.

[0011] Further, the driving mechanism comprises a waist hole arranged on the outer surface of the handle, and a driving rod penetrating through the waist hole, wherein the driving rod is connected with the transmission mechanism.

[0012] Further, the transmission mechanism is a straight rod arranged in the endoscope tube, wherein an outer surface of the straight rod is provided with a straight groove arranged along an axis of the straight rod, and an inner wall of the endoscope tube is provided with a convex strip matched with the straight groove.

[0013] Further, one end of the driving rod is connected with a button plate, the button plate is arranged outside the outer surface of the handle, and the button plate is provided with an anti-skid groove.

[0014] Further, an electric control unit is arranged in the handle, the straight rod is provided with a through hole arranged along an axis direction of the straight rod, a cable is arranged in the through hole, one end of the cable is electrically connected with the electric control unit, and the other end of the cable is electrically connected with the metal layer.

[0015] Further, the outer walls of opposite sides of the handle are both provided with a hand holding groove.

[0016] Further, an illumination and camera assembly is arranged at an end of the endoscope tube away from the handle, and the illumination and camera assembly is arranged towards the inclined surface.

[0017] Compared with the prior art, the utility model has the advantages that: through the arrangement of the inclined surface block, in the process that the electrode and the endoscope tube enter the human body, the electrode is retracted towards the endoscope tube, the electrode does not protrude from the inclined surface block, so the electrode will not cause injury to the human tissue. When reaching the operation position, the electrode is driven to slide along the inclined surface of the inclined surface block and protrude from the inclined surface block, the electrode protruding from the inclined surface block is used to cut the human tissue, and the utility model is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the front view of the visual plasma knife of the utility model;

[0019] Figure 2 is Figure 1 the enlarged schematic view of A part in the figure;

[0020] Figure 3 is the three-dimensional schematic view of the visual plasma knife of the utility model;

[0021] Figure 4 is Figure 3 the enlarged schematic view of B part in the figure;

[0022] Figure 5 is the schematic view of the driving mechanism and the transmission mechanism of the utility model.

[0023] In the figure:

[0024] 1 - handle; 2 - endoscope tube; 3 - bevel block; 4 - electrode; 5 - electrode slot; 6 - drive rod; 7 - straight rod; 8 - ridge; 9 - button plate; 10 - through hole; 11 - cable; 12 - hand grip slot; 13 - illumination and camera assembly. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] The present application is an improvement on the existing visual plasma knife with camera and lighting device, used in surgical operation. Figures 1 to 4The utility model discloses a visual plasma sword, including handle 1, with handle 1 connects the endoscope mirror tube 2, with the endoscope mirror tube 2 away handle 1 one end connection's bevel block 3, towards the electrode 4 of bevel block 3 bevel setting, bevel towards endoscope mirror tube 2 setting. The electrode 4 is equipped with first position and second position. When the electrode 4 is located first position, the electrode 4 has not protruded bevel block 3, when the electrode 4 is along with endoscope mirror tube 2 and stretches into the human body, because the electrode 4 has not protruded bevel block 3, so the electrode 4 is not easy to cause the mistake of human tissue. When the electrode 4 is located second position, the electrode 4 protrudes bevel block 3, when reaching the operation position, because the electrode 4 protrudes bevel block 3, the protruding electrode 4 sends energy and carries out human tissue cutting. In the operation process, first the electrode 4 is located first position, then the electrode 4 and endoscope mirror tube 2 enter the human body together. When reaching the operation position, drive electrode 4, and the bevel of bevel block 3 plays the role of orientation, and the electrode 4 slides along the bevel and protrudes bevel block 3, that is, drive electrode 4 from first position to second position. After completing the operation cutting, drive the electrode 4 from second position to first position again, then the visual plasma sword of the utility model leaves the human body. The utility model discloses through the setting of bevel block 3, when the electrode 4 and endoscope mirror tube 2 enter the human body, the electrode 4 is towards endoscope mirror tube 2 retract, and the electrode 4 has not protruded bevel block 3, so the electrode 4 will not cause the mistake of human tissue. When reaching the operation position, by driving electrode 4, the electrode 4 can slide along the bevel of bevel block 3 and can protrude bevel block 3, and the electrode 4 protruding bevel block 3 is used to cut human tissue, and it is convenient to use.

[0029] The utility model discloses a visual plasma sword, has the mechanism of driving electrode 4 movement, and the shape of bevel block 3, the shape of handle 1 and numerous technical features have multiple implementation ways, below in the shape of bevel block 3 and numerous technical features, each selects one implementation way and carries out detailed description, and the implementation example of this implementation way is called this example. The other implementation ways of numerous features are called other examples, and below briefly describe for other examples.

[0030] In this embodiment, as Figure 3 And Figure 4As shown in the drawings, the inclined surface block 3 is located in the projection of the radial section plane of the endoscope tube 2 in the radial section plane of the endoscope tube 2. Specifically, the projection of the inclined surface block 3 in the radial section plane of the endoscope tube 2 is semicircular, and the inclined surface block 3 is provided with a circular arc surface, the endoscope tube 2 is a circular tube, and the circular arc surface of the inclined surface block 3 is the same as the curvature of the outer wall of the endoscope tube 2 and is integrated. Since the inclined surface block 3 is located in the projection of the radial section plane of the endoscope tube 2 in the radial section plane of the endoscope tube 2, the inclined surface block 3 is not easy to cause injury to the human body during the process of entering the human body. In other embodiments, the inclined surface block 3 can also be conical, and the tip of the cone is arranged away from the endoscope tube 2, so that the inclined surface block 3 is also convenient to enter the human body.

[0031] In this embodiment, as shown in Figure 1 and Figure 2 , an electrode slot 5 is arranged on the inclined surface of the inclined surface block 3, and the electrode 4 is arranged in the electrode slot 5. Therefore, during the sliding process of the electrode 4, for example, during the sliding process of the electrode 4 protruding from the inclined surface block 3, the electrode 4 always slides in the electrode slot 5. The utility model has the effect of guiding the sliding process of the electrode 4 through the arrangement of the electrode slot 5, and facilitates the sliding of the electrode 4. In other embodiments, the electrode 4 and the inclined surface can also be connected together through a sliding block sliding rail.

[0032] In this embodiment, as shown in Figures 1 to 5 , the visual plasma knife of the utility model further comprises a driving mechanism arranged on the handle 1, a transmission mechanism connected with the driving mechanism, the transmission mechanism is connected with the electrode 4, the electrode 4 comprises a flexible member and a metal layer wrapped outside the flexible member, and the flexible member is connected with the transmission mechanism. During the use of the visual plasma knife of the utility model, when the electrode 4 is in the first position, the electrode 4 is partially retracted into the endoscope tube 2. When the electrode 4 needs to be switched to the second position, the driving mechanism is operated to move towards the inclined surface block 3, which drives the transmission mechanism to move towards the inclined surface block 3, thereby driving the electrode 4 to move away from the endoscope tube 2. Since the inside of the electrode 4 is a flexible member, when the electrode 4 slides, the electrode 4 bends relative to the transmission mechanism. By limiting the inside of the electrode 4 to be a flexible member, the utility model facilitates the change of the movement direction of the electrode 4 during the movement of the electrode 4 driven by the transmission mechanism. In other embodiments, a universal transmission mechanism can also be connected between the transmission mechanism and the electrode 4.

[0033] In this embodiment, as shown in Figure 5As shown, the driving mechanism is a straight rod 7 arranged in the endoscope tube 2, the outer surface of the straight rod 7 is provided with a straight groove arranged along the axis of the straight rod, and the inner wall of the endoscope tube 2 is provided with a convex strip 8 matched with the straight groove, and the straight groove is arranged along the axis direction of the endoscope tube 2. The utility model discloses through the setting of the convex strip 8 and the straight groove, it is convenient for the straight rod 7 to move along the axis of the endoscope tube 2. In other embodiments, in order to facilitate the electrode 4 to be able to quickly extend the inclined surface block 3, reduce the force of operating the driving rod 6, the transmission mechanism can also adopt hydraulic transmission.

[0034] In the embodiment, as shown in Figure 4 , Figure 5 The transmission mechanism is a straight rod 7 arranged in the endoscope tube 2, the outer surface of the straight rod 7 is provided with a straight groove arranged along the axis of the straight rod, and the inner wall of the endoscope tube 2 is provided with a convex strip 8 matched with the straight groove, and the straight groove is arranged along the axis direction of the endoscope tube 2. The utility model discloses through the setting of the convex strip 8 and the straight groove, it is convenient for the straight rod 7 to move along the axis of the endoscope tube 2. In other embodiments, in order to facilitate the electrode 4 to be able to quickly extend the inclined surface block 3, reduce the force of operating the driving rod 6, the transmission mechanism can also adopt hydraulic transmission.

[0035] In the embodiment, as shown in Figure 1 , Figure 3 , Figure 5 One end of the driving rod 6 is connected with a button plate 9, the button plate 9 is arranged outside the outer surface of the handle 1, and the button plate 9 is provided with an anti-skid groove. The utility model discloses through the setting of the button plate 9 with anti-skid groove, it is convenient for operating the electrode 4 to extend the inclined surface block 3. In other embodiments, in the case of setting the button, then the button plate 9 does not need to be arranged.

[0036] In the embodiment, as shown in Figures 3 to 5 The utility model discloses an electric control unit arranged in the handle 1, and the straight rod 7 is provided with a through hole 10 arranged along the axis direction of the straight rod 7. The through hole 10 is provided with a cable 11, one end of the cable 11 is electrically connected with the electric control unit, and the other end of the cable 11 is electrically connected with the metal layer of the electrode 4. The utility model discloses through the setting of the cable 11 in the straight rod 7, so that the cable 11 is not easily affected by the external environment, and the reliability is high. In other embodiments, a pipeline can also be separately arranged in the endoscope tube 2 for arranging the cable 11.

[0037] In the embodiment, as shown in Figure 1 , Figure 3 The opposite two sides of the handle 1 are both provided with a hand holding groove 12. The utility model discloses through the setting of the hand holding groove 12, it is convenient for the operating doctor to stably hold the handle 1. In other embodiments, the shape of the handle 1 can be drop-like, through bionic design, it is convenient for the operating doctor to hold the handle 1.

[0038] In the embodiment, as shown in Figure 3 , Figure 4As shown, the visual plasma knife further comprises an illumination and camera assembly 13 arranged at the end of the endoscope tube 2 away from the handle 1, the illumination and camera assembly 13 is arranged on the inner wall of the endoscope tube 2 while being arranged towards the inclined surface. When the illumination and camera assembly 13 works, the illumination and camera assembly 13 emits bright light towards the protruding electrode 4 to illuminate the environment around the electrode 4. Meanwhile, the camera unit in the illumination and camera assembly 13 photographs the electrode 4 and transmits the real-time image to the external display device, so that the surgeon can clearly see the human tissue near the electrode 4 through the external display device. The setting of the illumination and camera assembly 13 realizes the visual effect of the plasma knife. In other embodiments, a snake bone assembly can be arranged on the endoscope tube 2, and the end of the snake bone assembly away from the endoscope tube 2 is connected with the illumination and camera assembly 13. During the operation, the illumination and camera assembly 13 can be expanded by operating the snake bone assembly.

[0039] In summary, the visual plasma knife has the following advantages: the setting of the inclined surface block 3 makes the electrode 4 not protrude from the inclined surface block 3 during the process of entering the human body, so that the human tissue is not injured; the setting of the inclined surface block 3 reduces the possibility of injury during the process of entering the human body; the setting of the electrode groove 5 plays a guiding role during the sliding process of the electrode 4, so that the electrode 4 is facilitated to slide; the setting of the flexible member inside the electrode 4 facilitates the change of the movement direction of the electrode 4 due to the block of the inclined surface; the setting of the waist hole and the driving rod 6 facilitates the operation of the electrode 4 to protrude from the inclined surface block 3; the setting of the convex strip 8 and the straight groove facilitates the movement of the straight rod 7 along the axis of the endoscope tube 2; the setting of the button plate 9 with the anti-skid groove facilitates the operation of the electrode 4 to protrude from the inclined surface block 3; the setting of the cable 11 in the straight rod 7 makes the cable 11 not easily affected by the external environment; the setting of the hand holding groove 12 facilitates the stable holding of the handle 1 by the surgeon; and the setting of the illumination and camera assembly 13 realizes the visual effect of the plasma knife.

[0040] It should be emphasized that: the above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical scheme of the present application.

Claims

1. A visual plasma knife comprising a handle (1), an endoscope tube (2) connected with the handle (1), characterized in that, The bevel block (3) is located on the projection of the radial section plane of the endoscope tube (2) in the radial section plane of the endoscope tube (2).

2. The visualizing plasma blade of claim 1, wherein, The bevel block (3) is located on the projection of the radial section plane of the endoscope tube (2) in the radial section plane of the endoscope tube (2).

3. The visual plasma blade of claim 1, wherein, The bevel is provided with an electrode groove (5), and the electrode (4) is arranged in the electrode groove (5).

4. The visual plasma blade of claim 1, wherein, The driving mechanism is arranged on the handle (1), the transmission mechanism is connected with the driving mechanism, the transmission mechanism is connected with the electrode (4), the electrode (4) comprises a flexible member and a metal layer wrapped outside the flexible member, and the flexible member is connected with the transmission mechanism.

5. The visual plasma blade of claim 4, wherein, The driving mechanism is a waist hole arranged on the outer surface of the handle (1), and a driving rod (6) penetrating through the waist hole, the driving rod (6) is connected with the transmission mechanism.

6. The visual plasma blade of claim 5, wherein, The transmission mechanism is a straight rod (7) arranged in the endoscope tube (2), and the outer surface of the straight rod (7) is provided with a straight groove arranged along the axis of the straight rod, and the inner wall of the endoscope tube (2) is provided with a convex strip (8) matched with the straight groove.

7. The visual plasma blade of claim 5, wherein, One end of the driving rod (6) is connected with a button plate (9), the button plate (9) is arranged outside the outer surface of the handle (1), and the button plate (9) is provided with an anti-skid groove.

8. The visual plasma blade of claim 6, wherein, The handle (1) is provided with an electric control unit arranged in the handle (1), the straight rod (7) is provided with a through hole (10) arranged along the axis direction of the straight rod (7), the through hole (10) is provided with a cable (11), one end of the cable (11) is electrically connected with the electric control unit, and the other end of the cable (11) is electrically connected with the metal layer.

9. The visual plasma blade of claim 1, wherein, The opposite two sides of the handle (1) are provided with hand holding grooves (12).

10. The visual plasma blade of claim 1, wherein, The handle (1) is provided with an illumination and camera assembly (13) arranged at the end away from the handle (1) of the endoscope tube (2), and the illumination and camera assembly (13) is arranged towards the bevel.

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