CN221750652U - Long sheet flat head cutter - Google Patents

Abstract

The utility model discloses a long sheet-shaped flat-head cutting knife, which belongs to a cutting tool of an ultrasonic surgical scalpel system, and comprises a connecting part detachably connected to the ultrasonic surgical scalpel system, one end of the connecting part is connected to a stopper, the other end of the stopper is connected to a knife handle, the diameter of the stopper is larger than that of the connecting part and the knife handle, the other end of the knife handle is connected to a knife arm, the knife arm is in the shape of a long sheet, a knife head is arranged at the other end of the knife arm, and a transition part is arranged at the connection between the knife arm and the knife head, and the knife head is in the shape of a flat rectangle. The present application can improve the treatment of flat wounds by the cutting knife by adopting a long sheet shape for the knife arm and a flat rectangle shape for the knife head, avoid secondary damage to the wound caused by the need to cut the wound because the knife arm is in the shape of a cylinder, and the tips of the spike-shaped knife teeth are connected in a straight line, so that the tips of the knife teeth can be on the same horizontal line when the knife head performs surgical cutting.

Description

A long flat-head cutting knife

Technical Field

The utility model relates to the technical field of ultrasonic surgical scalpel system cutters, in particular to a long sheet-shaped flat-head cutting knife.

Background Art

In orthopedic surgery, due to the injury of the patient's bones, the doctor needs to use an ultrasonic bone cutter to cut, grind, plan and scrape the bones. In the bone cutter for ultrasonic surgical scalpel system in the Chinese patent with application number 201520615986.3, the bone cutter is detachably connected to the ultrasonic transducer of the ultrasonic surgical scalpel system through a connecting part. It can be used in conjunction with the ultrasonic surgical scalpel system. It can be used in conjunction with the ultrasonic surgical scalpel system, and it can avoid the field of vision being blocked by the handle, but the knife arm and the handle are both cylindrical in design, and in the actual practical process, it is impossible to penetrate into the flat wound, and the wound needs to be cut open, causing secondary damage. Since the knife head adopts an arc design, it is difficult to make the saw teeth of the knife head fall evenly on the same horizontal line during the surgical bone cutting process. The cutting process is not synchronized during the bone cutting process, resulting in uneven cutting. The debris generated during the bone cutting process is easy to get stuck in the knife, affecting the progress of the operation, and the operation is difficult. In order to solve the above problems, the present application proposes a long sheet-shaped flat-headed cutting knife.

Utility Model Content

1. Technical issues to be solved

The utility model provides a long sheet-shaped flat-head cutting knife, which is applied to an ultrasonic surgical scalpel system and aims to solve the problems in the prior art that the existing bone cutting knife cannot penetrate into a flat wound and needs to cut the wound open, causing secondary damage; since the knife head adopts an arc design, it is difficult to make the saw teeth of the knife head fall evenly on the same horizontal line during the bone cutting operation; the cutting process is not synchronized during the bone cutting process, resulting in uneven cutting; the debris generated during the bone cutting process is easy to get stuck in the knife, affecting the progress of the operation and making the operation difficult.

(II) Technical solution

In order to achieve the above purpose, the utility model provides the following technical solutions:

A long sheet-shaped flat-head cutting knife comprises a connecting portion detachably connected to an ultrasonic surgical scalpel system, one end of the connecting portion is connected to a stopper, the other end of the stopper is connected to a knife handle, the diameter of the stopper is larger than the connecting portion and the knife handle, the other end of the knife handle is connected to a knife arm, the knife arm is in the shape of a long sheet, the other end of the knife arm is provided with a knife head, and a transition portion is provided at the connection between the knife arm and the knife head, the knife head is a flat rectangle, the blade portion of the knife head is provided with a plurality of spike-shaped teeth, and the thickness of the knife head gradually becomes thinner from the knife arm along the spike-shaped teeth. The knife head of the long sheet-shaped flat-head cutting knife gradually becomes thinner, which can avoid knife jamming, and the blade portion is provided with spike-shaped teeth to reduce debris generated during bone cutting.

Furthermore, the connecting portion is cylindrical, and the outer wall of the connecting portion is provided with threads.

Furthermore, the diameters of the connecting portion and the handle are both 8 mm.

Furthermore, a line connecting the tips of a plurality of the spike-shaped blade teeth is a straight line.

Furthermore, the cutter head is made of titanium alloy.

(III) Beneficial effects

The present application uses a long sheet-shaped blade arm and a flat rectangular blade head, which can improve the cutting knife's ability to handle flat wounds and avoid secondary damage to the wound caused by the cylindrical blade arm. The tip of the spike-shaped blade teeth is connected in a straight line, so that the tips of the blade teeth can be on the same horizontal line during surgical cutting, avoiding asynchronous cutting during bone cutting, resulting in uneven cutting, reducing debris generated during bone cutting, and reducing the difficulty of surgical bone cutting. The thickness of the blade head gradually becomes thinner from the blade arm along the spike-shaped blade teeth, which improves the accuracy of the blade head's entry point at the wound and can avoid knife jamming. In addition, the long sheet-shaped flat-headed cutting knife of the present application has no holes, and water is not passed through the inside of the knife, while the existing ultrasonic surgical scalpel system knife has holes and water is passed through the knife. The long sheet-shaped flat-headed cutting knife without holes in the present application has better surgical effects than the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a long sheet-shaped flat-head cutting knife of the utility model;

FIG2 is a top view of the long sheet-shaped flat-head cutting knife of the utility model;

FIG. 3 is a side view of the long sheet-shaped flat-head cutting knife of the present invention.

In the figure:

1. Connecting part; 2. Stopping part; 3. Handle; 4. Knife arm; 5. Knife head.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1 to 3, which include a connecting portion 1 detachably connected to an ultrasonic surgical scalpel system, one end of the connecting portion 1 is connected to a stopper 2, and a tool is detachably connected to the ultrasonic surgical scalpel system through the connecting portion 1, wherein the outer wall of the connecting portion 1 is provided with a thread matching the ultrasonic surgical scalpel system, and the tool is detachably connected to the ultrasonic surgical scalpel system through the external thread provided on the outer wall of the connecting portion 1, and when the tool is connected to the ultrasonic surgical scalpel system through the external thread provided on the outer wall of the connecting portion 1, when the tool is screwed into the ultrasonic surgical scalpel system until the bottom edge of the ultrasonic surgical scalpel system contacts the stopper 2, it cannot be screwed in further, therefore, the function of the stopper 2 is to limit the screwing-in of the tool, the other end of the stopper 2 is connected to a handle 3, the diameter of the stopper 2 is larger than that of the connecting portion 1 and the handle 3, and the other end of the handle 3 is connected The blade arm 4 is provided with a blade head 5, and a transition portion is provided at the connection between the blade arm 4 and the blade head 5. The blade head 5 is a flat rectangle. By adopting the blade arm in the shape of a long sheet and the blade head in the shape of a flat rectangle, the cutting knife can improve the processing of flat wounds and avoid secondary damage to the wound caused by the cylindrical blade arm. The blade of the blade head 5 is provided with a plurality of spike-shaped teeth, and the thickness of the blade head 5 gradually becomes thinner along the spike-shaped teeth from the blade arm 4, and the line connecting the tips of the spike-shaped teeth is a straight line, so that in the process of bone cutting operation, it is possible to avoid the cutting process being out of sync during the bone cutting process, resulting in uneven cutting and reducing the debris generated during the bone cutting process. The thickness of the blade head gradually becomes thinner along the spike-shaped teeth from the blade arm, which can avoid knife jamming, increase the sensitivity of blade head control, and improve the safety of the blade head.

The ultrasonic surgical scalpel system is not disclosed in this application, but a complete introduction to the ultrasonic surgical scalpel system is provided in the Chinese patent application No. 201520617007.8. As it is a prior art, it will not be described in detail in this application.

The connecting line of the tips of several spike-shaped cutting teeth is in a straight line, which can avoid the asynchronous cutting process during the bone cutting process, resulting in uneven cutting and reduce the debris generated during the bone cutting process.

The cutter head 5 is made of titanium alloy, which improves the safety of the cutter head.

The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, shall make equivalent replacements or changes, which shall be covered by the protection scope of the utility model.

Claims (5)

1. A long sheet-shaped flat-head cutting knife, comprising a connecting portion (1) detachably connected to an ultrasonic surgical scalpel system, characterized in that: one end of the connecting portion (1) is connected to a stopper (2), the other end of the stopper (2) is connected to a knife handle (3), the diameter of the stopper (2) is larger than the connecting portion (1) and the knife handle (3), the other end of the knife handle (3) is connected to a knife arm (4), the knife arm (4) is in the shape of a long sheet, the other end of the knife arm (4) is provided with a knife head (5), and a transition portion is provided at the connection between the knife arm (4) and the knife head (5), the knife head (5) is in the shape of a flat rectangle, the blade of the knife head (5) is provided with a plurality of spike-shaped teeth, and the thickness of the knife head (5) gradually becomes thinner from the knife arm (4) along the spike-shaped teeth. 2. The long sheet-shaped flat-head cutting knife according to claim 1, characterized in that the connecting portion (1) is cylindrical, and the outer wall of the connecting portion (1) is provided with threads. 3. The long flat-head cutting knife according to claim 1, characterized in that the diameters of the connecting portion (1) and the handle (3) are both 8 mm. 4. The long flat-head cutting knife according to claim 1, wherein the line connecting the tips of the plurality of spike-shaped teeth forms a straight line. 5. The long flat-head cutting knife according to claim 1, characterized in that the knife head (5) is made of titanium alloy.