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Cartilage slicing knife

A slicing knife and cartilage technology, applied in bone implants, medical science, nose implants, etc., can solve the problems of small costal cartilage, inconvenient cutting, and easy deviation

Pending Publication Date: 2020-05-19
FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cutting method is quite difficult in the operation. It is very inconvenient to use a scalpel to cut, and it is difficult to cut out regular cartilage slices. Moreover, the costal cartilage is small in size and relatively smooth, so it is difficult to grasp and fix it, and it is easy to appear in the cutting process. Deviation, or even scrapping

Method used

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  • Cartilage slicing knife
  • Cartilage slicing knife
  • Cartilage slicing knife

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1 to Figure 5 , a cartilage slicing knife used for cutting cartilage slices from costal cartilage 10, including a cutting knife 20 and a base 30.

[0041] The costal cartilage is a piece of cartilage taken from the ribs of the human body. Its shape is close to a cylinder and its diameter is about 10mm. Thick slices of cartilage.

[0042] The cutter 20 is a double-edged cutter provided with two blades 21, and a gap D=1mm corresponding to the thickness of the cartilage sheet is arranged between the two blades.

[0043] The cutting knife 20 is installed on the knife bar 50, and the front end of the knife bar is hinged with the bottom plate 60 through the rotating shaft 61 to form a guillotine structure, and the knife bar drives the cutting knife to cut into the costal cartilage downward. The width K2 of the chute corresponds to the width K1 of the knife shank, into which the shank can enter with a sliding fit, as in image 3 shown.

[0044] The base 30 ...

Embodiment 2

[0049] Such as Figure 6 , a cartilage slicer. This embodiment is a structural improvement of the first embodiment.

[0050] In this embodiment, a side positioning block 70 is respectively provided on both sides of the trough 31, and reset holes 71 corresponding to the positions are respectively provided at both ends of the two side positioning blocks. There is reset shaft 72, which slides and fits with the positioning holes of two or two side positioning blocks, and reset spring 73 is sleeved on the reset shaft, and the reset spring is arranged between the two side positioning blocks. A side positioning block is used to move the two positioning blocks to separate.

[0051] The structure of this embodiment can keep the two side positioning blocks stably in the material placement chute. The return spring can also promote the separation of the two side positioning blocks to facilitate the placement and removal of the costal cartilage.

Embodiment 3

[0053] Such as Figure 7 to Figure 8 , a cartilage slicer. This embodiment is a structural improvement of the first embodiment.

[0054] A cutter guide block 40 that presses the costal cartilage from the upper end is arranged in the feeding trough. The width K3 of the cutter guide block corresponds to the width K2 of the feeding chute, and the cutter guide block can be embedded into the feeding chute with a sliding fit. Bolt holes 47 are respectively provided at both ends of the cutter guide block, and the bolt holes 47 are stepped holes, and a pressure regulating spring 46 is arranged in the bolt holes 47 . The bottom plate is provided with screw holes 37 at positions corresponding to the bolt holes 47 . The two ends of cutter guide block are provided with guide block bolt 45, and guide block bolt 45 is screwed into the screw hole 37 of base, and guide block bolt presses cutter guide block on the described costal cartilage by pressure regulating spring 46.

[0055] The cut...

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Abstract

The invention relates to a cartilage slicing knife. The cartilage slicing knife is used for cutting cartilage pieces from a costal cartilage, and comprises a cutting knife and a base, wherein the cutting knife is a dual-edge cutting knife with two knife blades; a gap of which the width corresponds to the thickness of each cartilage piece is formed between the two knife blades; a material placing groove allowing the costal cartilage to be placed is formed in the base; and a cutting empty groove of which the width corresponds to that of the cutting knife is formed in the bottom of the material placing groove. The cartilage slicing knife disclosed by the invention has the beneficial effects that the dual-edge cutting knife is adopted, so that cutting and shaping can be performed in one time,and the operation is convenient and high in efficiency; the material placing groove is in sliding cooperation with a knife bar, so that the stability of the moving of the cutting knife in the horizontal direction is guaranteed; a cutting knife guide block for elastically compacting the costal cartilage from the front end is arranged, so that the costal cartilage can be stably positioned and fixed;and a knife blade guide groove which is in sliding cooperation with the knife blade is formed in the cutting knife guide block, and can be used for supporting and positioning the knife blade in the cutting process, so that the situation that in the cutting process, the knife blade is deformed is avoided, the cutting effect and the cutting precision are guaranteed.

Description

technical field [0001] The invention belongs to medical plastic equipment, in particular to a cartilage slicer. Background technique [0002] When performing rhinoplasty, a piece of cartilage is often taken from other parts of the patient's body as costal cartilage, and then cut into 1mm thick cartilage pieces and implanted in the nose. The most commonly used cartilage is taken from ribs, which can be called costal cartilage. Costal cartilage is a cylinder-like body that needs to be cut along the axis of the cylinder to obtain cartilage pieces. This kind of cutting method is quite difficult in the operation. It is very inconvenient to use a scalpel to cut, and it is difficult to cut out regular cartilage slices. Moreover, the costal cartilage is small in size and relatively smooth, so it is difficult to grasp and fix it, and it is easy to appear in the cutting process. Deviation, or even scrapping. Contents of the invention [0003] The purpose of the present invention i...

Claims

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Application Information

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IPC IPC(8): A61F2/18A61F2/46A61F2/28
CPCA61F2/186A61F2/30942A61F2/30756A61F2/4644A61F2002/3096
Inventor 宋慧锋陈保国
Owner FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
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