Visual electrotome

Abstract

The utility model discloses a visual electric knife which comprises a handle, a knife bar, a lighting and camera shooting device and a wiring assembly. The handle comprises a drawable inner cylinder and an outer cylinder sleeved on the outer side of the inner cylinder; the cutter bar is inserted into the inner cylinder and can be pulled and moved in the inner cylinder; the lighting and camera shooting device comprises a mounting rod, a lighting lamp and a camera, the lighting lamp and the camera are located at the end of the mounting rod, a mounting hole parallel to the axis of the inner barrel is further formed in the inner barrel, and the mounting rod is inserted into the mounting hole and can be pulled and moved in the mounting hole; and the wiring assembly is connected to the lighting and camera device and the cutter bar. By the adoption of the technical scheme, the visual electrotome overcomes the defects caused by the fact that an illumination device and a camera shooting device cannot be adjusted adaptively in the prior art, the visibility of an operation area is improved, insufficient illumination caused by the long illumination distance is avoided, and a good view field range is provided for a doctor.

Description

Technical Field

[0001] The utility model relates to a visual electrocautery, belonging to the technical field of medical devices. Background Art

[0002] An electrocautery is a medical device commonly used in surgical operations. It cuts tissues or coagulates blood vessels through the heat energy generated by an electric current to achieve the purpose of hemostasis or cutting. The electrocautery has the advantages of high efficiency, speed, precision, etc. in operations, making it an indispensable tool in modern surgical operations. A visual electrocautery is a medical device that combines traditional electrocautery and modern imaging technology. It integrates a high-definition camera and a lighting system on the basis of the traditional electrocautery, enabling surgeons to see the situation of the surgical area in real time and clearly when using the electrocautery for operations, thereby improving the accuracy and safety of the operation. For example, a high-frequency electrocautery with wireless video recording, lighting, and smoking functions disclosed in Chinese patent document CN219184068U. At present, there are some limitations in the actual application of the visual electrocautery. Especially when integrating the lighting and imaging devices on the handle, when the knife rod is pulled out or retracted by different lengths on the handle for use, the lighting and imaging devices may not be able to adjust adaptively. This defect in design may bring about limited vision. When the knife rod extends or retracts, the relative positions of the camera and lighting to the tip of the knife will change, resulting in the vision may become narrow or blurred, affecting the visibility of the surgical area and increasing the operation difficulty. In addition, there may also be insufficient lighting. The position of the lighting device is fixed. When the length of the knife rod changes, the lighting range may not be able to cover the surgical area. Especially during the operation on deep tissues, insufficient lighting will affect the doctor's line of sight and operation accuracy. Due to the limitations of vision and lighting, surgeons may need to frequently adjust the position or angle of the electrocautery during the operation, increasing the complexity of the operation and the operation time, and posing a potential danger to the safety of patients. Summary of the Utility Model

[0003] Therefore, the purpose of the utility model is to provide a visual electrocautery in which the positions of the lighting and imaging devices can be adjusted along with the telescopic movement of the knife rod.

[0004] To achieve the above purpose, a visual electrocautery of the utility model includes a handle, a knife rod, a lighting and imaging device, and a wiring assembly; the handle includes an inner cylinder that can be pulled out and an outer cylinder sleeved outside the inner cylinder; the knife rod is inserted into the inner cylinder and can be pulled out and moved inside the inner cylinder; the lighting and imaging device includes a mounting rod and a lighting lamp and a camera located at the end of the mounting rod. An installation hole parallel to its axis is also provided on the inner cylinder. The mounting rod is inserted into the installation hole and can be pulled out and moved inside the installation hole; the wiring assembly is connected to the lighting and imaging device and the knife rod; the inner cylinder and the outer cylinder, the knife rod and the inner cylinder, and the mounting rod and the inner cylinder are all in frictional fit.

[0005] A limiting structure is arranged between the inner cylinder and the outer cylinder for limiting the pulling-out stroke of the inner cylinder in the outer cylinder.

[0006] The limiting structure includes a limiting protrusion arranged on the outer side wall of the inner cylinder and a limiting groove arranged on the inner side wall of the outer cylinder. The limiting groove is a straight groove and extends along the axial direction of the outer cylinder, and the limiting protrusion is located in the limiting groove.

[0007] A first shoulder portion is arranged on the outer side wall of the inner cylinder part. The first shoulder portion divides the inner cylinder part into two parts, namely an insertion part on the proximal side and an extension part on the distal side. The outer diameter of the insertion part is smaller than that of the extension part, and the insertion part is inserted into the outer cylinder.

[0008] The mounting hole is opened on the extension part.

[0009] An anti - detachment convex ring is arranged at one end of the mounting rod far away from the illuminating lamp and the camera. A second shoulder portion is arranged on the inner side wall of the mounting hole. The second shoulder portion divides the mounting hole into two parts, namely a first hole part on the proximal side and a second hole part on the distal side. The second shoulder portion can block the anti - detachment convex ring, and the mounting rod is in frictional fit with the inner side wall of the second hole part.

[0010] A stop block is further arranged inside the outer cylinder near the proximal side.

[0011] The wiring assembly further includes a first plug and a second plug for respectively connecting to the cutter bar and the lighting and imaging device through wires.

[0012] With the above - mentioned technical solution, compared with the prior art, the visual electric knife of the present utility model has the following beneficial effects: The illuminating lamp and the camera are not integrated on the handle, but are arranged at the end of the mounting rod. The mounting rod is inserted into the mounting hole opened on the inner cylinder, so that it can be pulled outwards in the mounting hole to adjust the positions of the illuminating lamp and the camera. During use, the position of the cutter head can be adjusted by pulling the inner cylinder outwards in the outer cylinder and pulling the cutter bar outwards in the inner cylinder. After the adjustment is in place, the positions of the illuminating lamp and the camera can be adjusted by pulling the mounting rod. Thus, it overcomes the defect caused by the inability to adaptively adjust the lighting and imaging devices in the prior art, is beneficial to improving the visibility of the surgical area, avoids insufficient lighting caused by a long lighting distance, and provides a better visual field range for doctors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model.

[0014] Figure 2 It is a partial cross - sectional view of the outer cylinder of the handle.

[0015] Figure 3 Another perspective schematic diagram of Figure 2 is shown.

[0016] Figure 4 is a partial cross-sectional view of the inner cylinder.

[0017] Figure 5 is a schematic diagram of the state where the tool bar and the mounting bar are pulled towards the distal end.

[0018] Figure 6 is Figure 5 a partial enlarged view of part A in Specific embodiments

[0019] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] As Figure 1 shown, a visible electrosurgical knife of the present utility model includes a handle 1, a tool bar 2, an illumination and imaging device 3, and a wiring assembly 4. The wiring assembly 4 includes a first plug 41 and a second plug 42 that are respectively connected to the tool bar 2 and the illumination and imaging device 3 through wires.

[0021] As Figure 2 , 3 shown, the handle 1 includes a pullable inner cylinder 11 and an outer cylinder 12 sleeved outside the inner cylinder 11. A limiting structure is provided between the inner cylinder 11 and the outer cylinder 12 to limit the pulling stroke of the inner cylinder 11 outwardly within the outer cylinder 12. In this embodiment, the limiting structure includes a limiting protrusion 111 provided on the outer side wall of the inner cylinder 11 and a limiting groove 121 provided on the inner side wall of the outer cylinder 12. The limiting groove 121 is a straight groove and extends along the axial direction of the outer cylinder 12, and the limiting protrusion 111 is located within the limiting groove 121. A stopper 122 is further provided inside the outer cylinder 12 near the proximal end side. A first shoulder portion 112 is provided on the outer side wall of the inner cylinder 11 portion. The first shoulder portion 112 divides the inner cylinder 11 portion into two parts, namely an insertion portion 11a on the proximal end side and an extension portion 11b on the distal end side. The outer diameter of the insertion portion 11a is smaller than the outer diameter of the extension portion 11b. The insertion portion 11a is inserted into the outer cylinder 12.

[0022] The tool shank 2 is inserted into the inner cylinder 11 and can be pulled and moved within the inner cylinder 11. The lighting and imaging device 3 includes a mounting rod 31, a lighting lamp 32 and a camera 33 located at the end of the mounting rod 31. An installation hole 113 parallel to the axis of the inner cylinder 11 is further provided on the inner cylinder 11. Specifically, the installation hole 113 is formed in the extension portion 11b and penetrates through the extension portion 11b from front to back. The mounting rod 31 is inserted into the installation hole 113 and can be pulled and moved within the installation hole 113.

[0023] A friction fit is provided between the inner cylinder 11 and the outer cylinder 12, between the tool shank 2 and the inner cylinder 11, and between the mounting rod 31 and the inner cylinder 11. When the thrust or pull applied to the two is large enough to overcome the frictional force between them, relative movement occurs between them.

[0024] In this embodiment, an anti - detachment convex ring 311 is further provided at one end of the mounting rod 31 away from the lighting lamp 32 and the camera 33. A second shoulder portion 114 is provided on the inner side wall of the installation hole 113. The second shoulder portion 114 divides the installation hole 113 into two parts, namely a first hole portion 113a on the proximal side and a second hole portion 113b on the distal side. The second shoulder portion 114 can block the anti - detachment convex ring 311, and a friction fit is provided between the mounting rod 31 and the inner side wall of the second hole portion 113b.

[0025] Obviously, the above - mentioned embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A visual electric knife, characterized in that: It includes a handle, a knife rod, a lighting and camera device and a wiring assembly; the handle includes an inner cylinder that can be pulled out and an outer cylinder sleeved on the outside of the inner cylinder; the knife rod is inserted into the inner cylinder and can be pulled out and moved in the inner cylinder; the lighting and camera device includes a mounting rod and a lighting lamp and a camera located at the end of the mounting rod, and a mounting hole parallel to the axis of the inner cylinder is also provided on the inner cylinder, the mounting rod is inserted into the mounting hole and can be pulled out and moved in the mounting hole; the wiring assembly is connected to the lighting and camera device and the knife rod; the inner cylinder and the outer cylinder, the knife rod and the inner cylinder, and the mounting rod and the inner cylinder are all friction-fitted.

2. The visual electric knife according to claim 1, characterized in that: A limiting structure is arranged between the inner cylinder and the outer cylinder to limit the stroke of the inner cylinder being pulled outward from the outer cylinder.

3. The visual electric knife according to claim 2, characterized in that: The limiting structure includes a limiting protrusion arranged on the outer side wall of the inner cylinder and a limiting groove arranged on the inner side wall of the outer cylinder. The limiting groove is a straight groove and extends along the axial direction of the outer cylinder. The limiting protrusion is located in the limiting groove.

4. The visual electric knife according to claim 1, characterized in that: A first shoulder portion is provided on the outer wall of the inner cylinder portion, and the first shoulder portion divides the inner cylinder portion into two parts, namely an insertion portion located on the proximal side and an extension portion located on the distal side. The outer diameter of the insertion portion is smaller than the outer diameter of the extension portion, and the insertion portion is inserted into the outer cylinder.

5. The visual electric knife according to claim 4, characterized in that: The mounting hole is formed on the extension portion.

6. The visual electric knife according to any one of claims 1 to 5, characterized in that: An anti-slip convex ring is arranged at the end of the mounting rod away from the lighting lamp and the camera, and a second shoulder portion is arranged on the inner wall of the mounting hole. The second shoulder portion divides the mounting hole into two parts, namely, a first hole portion located on the proximal side and a second hole portion located on the distal side. The second shoulder portion can block the anti-slip convex ring, and the mounting rod is frictionally fitted with the inner wall of the second hole portion.

7. The visual electric knife according to any one of claims 1 to 5, characterized in that: A stopper is also arranged inside the outer tube and is located close to the proximal end.

8. The visual electric knife according to any one of claims 1 to 5, characterized in that: The wiring assembly also includes a first plug and a second plug for connecting to the knife rod and the lighting and camera device through wires respectively.

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