Nasal polyp cutting knife

Abstract

The nasal polyp cutting knife comprises an outer tube, the outer tube is of a cavity structure, the inner diameter of the outer tube is gradually increased from the top end to the bottom end, a planing outer knife is arranged at the position, close to the top end, of the outer tube, an inner tube is inserted into the outer tube, the interior of the inner tube is of a cavity structure, and the inner diameter of the inner tube is gradually increased from the top end to the bottom end. An inner planing cutter matched with the outer planing cutter is arranged on the inner pipe, and an inner cutter left edge and an inner cutter right edge are arranged on the left side and the right side of the inner planing cutter respectively. The invention relates to the technical field of nasal polyp cutting knives, and has the beneficial effects that after a cutting blade is additionally arranged at the near end of a planing inner knife, the added tooth blade can effectively reduce the amount of polyp entering during negative pressure suction and increase the amount of cut polyp to be smaller and more crushed, the polyp is gradually thickened through a pipeline so as to avoid blockage, the thickness of an inner pipe is increased, and the cutting efficiency is improved. The nasal polyp can be conveniently sucked out through a gradually thickened pipeline under the condition that the nasal polyp is cut to be smaller and more broken.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nasal polyp cutting knives, in particular to a nasal polyp cutting knife. BACKGROUND

[0002] All planing knives on the market will face a problem of blocking the knife tube channel when cutting nasal polyps during surgery. The reason is that the planing knife can only suck the polyp tissue into the planing knife opening by negative pressure suction when working. The left and right fast rotating inner planing knife opening is combined with the outer knife opening to cut off the polyp. Due to the negative pressure suction, the polyp shrinks into the inner knife opening for cutting. The tissue immediately restores its original elasticity after cutting, and the size increases. If the continuously cut polyps enter the mouth, it will cause blockage. Any cutting knife will face this technical pain point and cannot be solved, which affects the surgical progress of the doctor. SUMMARY

[0003] The purpose of the present application is to solve the above problems, and a nasal polyp cutting knife is designed.

[0004] To achieve the above purpose, the technical scheme of the present application is a nasal polyp cutting knife, which comprises an outer tube, the outer tube is a hollow structure, the inner diameter of the outer tube gradually increases from the top end to the bottom end, a planing outer knife is arranged at the top end of the outer tube, an inner tube is inserted into the outer tube, the inner tube is a hollow structure, and the inner diameter of the inner tube gradually increases from the top end to the bottom end to match the outer tube, a planing inner knife matched with the planing outer knife is arranged on the inner tube, inner left and right blades are arranged on the left and right sides of the planing inner knife respectively, and an inner middle blade is arranged on the lower end surface of the planing inner knife.

[0005] Preferably, a fixed sleeve is inserted into the bottom end of the outer tube, and a limiting pin is arranged between the fixed sleeve and the outer tube.

[0006] Preferably, the inner tube penetrates the fixed sleeve and is inserted into the outer tube, and the excess part of the inner tube protrudes out, and a connecting seat is fixed to the bottom end of the inner tube.

[0007] Preferably, fixed left and right blades are arranged on the planing outer knife.

[0008] Preferably, the inner cavity of the outer tube is an outer knife channel, and the inner cavity of the inner tube is an inner knife channel.

[0009] The nasal polyp cutting knife made by the technical scheme of the present application has an additional cutting blade at the proximal end of the planing inner knife. The additional tooth blade can effectively reduce the amount of polyps entering during negative pressure suction and increase the cutting of polyps to be smaller and more fragmented. The gradually thickened pipeline can avoid blockage. The inner tube is thickened, so that the nasal polyp is cut smaller and more fragmented, and is easily sucked out through the gradually thickened pipeline. The tooth blade increases the cutting efficiency and can limit the size of the polyps entering. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a nasal polyp cutting knife according to the present invention;

[0011] Figure 2 This invention relates to a nasal polyp cutting knife. Figure 1 A magnified view of part A in the image;

[0012] Figure 3 This is a side view of the inner blade of a nasal polyp cutting knife according to the present invention.

[0013] In the diagram, 1 is the outer tube; 2 is the outer planer cutter; 3 is the inner tube; 4 is the inner planer cutter; 5 is the left cutting edge of the inner cutter; 6 is the right cutting edge of the inner cutter; 7 is the middle cutting edge of the inner cutter; 8 is the fixing sleeve; 9 is the limiting pin; and 10 is the connecting seat. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figures 1-3 As shown, a nasal polyp cutting knife has an inner tube 3 that enters the outer tube 1, allowing the inner planing blade 4 and the outer planing blade 2 to overlap. The outer blade shell is fixed. One end of the inner tube 3 is connected to a motor via a connecting seat 10. When the motor is working, it drives the inner tube 3 to rotate at high speed, allowing the inner planing blade 4 and the outer planing blade 2 to rotate and combine to cut off the nasal polyp.

[0015] When using a shaving blade to cut nasal polyps, the polyps are sucked into the inner shaving blade 4 under negative pressure. Then, the inner tube 3 rotates, causing the inner shaving blade 4 to rotate at high speed, while the outer tube 1 does not rotate. This allows the inner shaving blade 4 and the outer shaving blade 2 to rotate and cut off the nasal polyps. At the same time, the middle blade 7 of the inner blade extends slightly to prevent the nasal polyps from entering the inner tube 3 completely. After the high-speed rotation of the left blade 5, right blade 6, and middle blade 7 of the inner blade, the polyps are cut into smaller and smaller pieces. They are then sucked out through the gradually thickening tube. The cut polyp tissue is then suctioned away in the inner blade channel of the inner tube 3, completing the surgery.

[0016] In this implementation scheme, it should be noted that the design involves adding a 1-millimeter-long sagittal blade near the middle of the inner blade edge to gradually thicken the channel between the inner tube 3 and the outer tube 1 to the negative pressure suction end.

[0017] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A nasal polyp cutting knife comprising an outer tube (1) which is a hollow structure, characterized in that, The inner diameter of the outer tube (1) gradually increases from the top end to the bottom end, the outer tube (1) is provided with a shaving outer cutter (2) near the top end, the inner tube (3) is inserted into the outer tube (1), the inner tube (3) is internally provided with a cavity structure, and the inner diameter of the inner tube (3) gradually increases from the top end to the bottom end, so as to be matched with the outer tube (1), the inner tube (3) is provided with a shaving inner cutter (4) matched with the shaving outer cutter (2), the shaving inner cutter (4) is respectively provided with an inner cutter left blade (5) and an inner cutter right blade (6) on the left side and the right side, and the lower end surface of the shaving inner cutter (4) is provided with an inner cutter middle blade (7).

2. The nasal polyp cutting knife according to claim 1, wherein The bottom end of the outer tube (1) is inserted with a fixed sleeve (8), and the fixed sleeve (8) and the outer tube (1) are provided with a limiting pin (9) therebetween.

3. The nasal polyp cutting knife according to claim 1, wherein The inner tube (3) penetrates through the fixed sleeve (8) and is inserted into the outer tube (1), and the excess part of the inner tube (3) is protruded, and the bottom end of the inner tube (3) is fixedly provided with a connecting seat (10).

4. The nasal polyp cutting knife according to claim 1, wherein The shaving outer cutter (2) is provided with a fixed left blade and a fixed right blade.

5. The nasal polyp cutting knife according to claim 1, wherein The inner cavity of the outer tube (1) is an outer cutter channel, and the inner cavity of the inner tube (3) is an inner cutter channel.

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