Split type needle knife

Abstract

The utility model discloses a split type needle knife which comprises a knife handle, a knife body and a knife point, the knife handle is fixedly connected with the knife body, and the knife body is detachably connected with the knife point. The tool nose is arranged to be double-faced edges, each double-faced edge is provided with a first edge face and a second edge face, and the first edge faces and the second edge faces are connected in an end-to-end mode. The notch is formed in the connecting position of the knife body and the knife point, the notch enables the connecting position of the knife body and the knife point to form an area capable of being detected by an ultrasonic instrument so that the specific position of the knife point can be accurately mastered, the knife body and the knife point in the needle knife can be detachably connected, and therefore the knife point can be conveniently and independently replaced, and the whole needle knife does not need to be replaced. According to the needle knife, the structure is simple, materials are saved, the knife point part is of a double-blade-face structure, different blade faces can be used for cutting and stripping in the needle applying process, it is guaranteed that the blade faces of the needle knife are not bent due to force applying or fatigue needle applying in the needle applying process of a doctor, and the technical problem that the blade faces are prone to curling is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle knives, in particular to a split type needle knives. Background Art

[0002] The micro-acupuncture therapy is mainly used for soft tissue injury lesions and bone and joint lesions. It is a closed release technique between surgical methods and non-surgical treatments. The needle tip of the micro-acupuncture is always located in the patient's body, and the operator can observe the position of the needle knife through ultrasound imaging.

[0003] Currently, the existing needle knives are integrally formed, in which the tip of the knife plays a major role, and the tip of the knife is generally a single blade. The single blade design makes the cutting and peeling actions concentrated on the same blade surface of the single blade, which not only easily causes damage to the tip of the knife, but also causes bending of the blade surface.

[0004] At the same time, as the number of times the needle knife is used increases, the damage to the tip of the needle knife will become more serious. Once the tip is damaged or bent, a new needle knife needs to be replaced, and the one-piece needle knife needs to be replaced as a whole. For an needle knife with only the tip damaged, replacing the entire needle knife will result in a waste of materials. Utility Model Content

[0005] The utility model aims to provide a split needle knife to solve the technical problems in the existing devices.

[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0007] A split needle knife comprises a knife handle, a knife body and a knife tip, wherein the knife handle is fixedly connected to the knife body, and the knife body is detachably connected to the knife tip;

[0008] The blade tip is configured as a double-sided blade, each of which is provided with a first blade surface and a second blade surface, and the first blade surface is connected to the second blade surface at the end;

[0009] A notch is provided at the connection between the blade body and the blade tip, and the notch forms an area at the connection between the blade body and the blade tip that can be detected by an ultrasonic instrument, so as to accurately grasp the specific position of the blade tip.

[0010] As a preferred solution of the utility model, both the first blade surface and the second blade surface are bevel blade surfaces, and both the first blade surface and the second blade surface are folded inwardly toward the axial direction of the blade body.

[0011] As a preferred solution of the utility model, a threaded column is installed in the inner cavity of the notch, one end of the threaded column is fixedly connected to the blade body, and the other end of the threaded column extends out of the blade body;

[0012] A thread groove which is threadably connected to the thread column is formed at one end of the knife tip close to the knife body.

[0013] As a preferred solution of the utility model, the notch is arranged in an isosceles trapezoidal shape, the top of the longer end of the notch faces the blade tip, and the bottom of the longer end of the notch faces away from the blade tip.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The blade body and the blade tip of the needle knife are connected in a detachable manner, so that the blade tip can be replaced separately without replacing the entire needle knife, saving materials. The blade tip adopts a double-edged surface structure, and different blade surfaces can be used for cutting and peeling during acupuncture, ensuring that the blade surface of the needle knife is not bent due to force or fatigue during acupuncture by the doctor, solving the technical problem of easy curling of the blade edge.

[0016] At the same time, the notch on the blade can form a cavity at the end of the blade, and the formation of the cavity can distinguish the entire blade structure, thereby facilitating detection by an ultrasonic instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A schematic diagram of the cross-sectional structure of the connection between the middle blade and the blade tip;

[0020] Figure 3 For the utility model Figure 2 Schematic diagram of the structure after the connection between the middle blade and the blade tip is separated;

[0021] The numbers in the figure represent the following:

[0022] 1. Handle; 2. Blade; 3. Tip; 31. First cutting edge; 32. Second cutting edge; 4. Notch; 5. Threaded column; 6. Threaded groove. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1-2 As shown, a split needle knife comprises a knife handle 1, a knife body 2 and a knife tip 3, wherein the knife handle 1 is fixedly connected to the knife body 2, and the knife body 2 is detachably connected to the knife tip 3;

[0025] The blade tip 3 is configured as a double-sided blade, each of which is provided with a first blade surface 31 and a second blade surface 32, and the first blade surface 31 and the second blade surface 32 are connected at the end;

[0026] A notch 4 is provided at the connection between the blade body 2 and the blade tip 3. The notch 4 forms an area at the connection between the blade body 2 and the blade tip 3 that can be detected by an ultrasonic instrument, so as to accurately grasp the specific position of the blade tip 3.

[0027] The blade body and the blade tip in the needle knife are connected in a detachable manner, so that the blade tip can be replaced separately without replacing the entire needle knife, saving materials. At the same time, the notch on the blade body can form a cavity at the end of the blade body. The formation of the cavity can distinguish the entire blade body structure, thereby facilitating detection by ultrasonic instruments.

[0028] Specifically, both the first blade surface 31 and the second blade surface 32 are bevel blade surfaces, and both the first blade surface 31 and the second blade surface 32 are bent inwardly toward the axial direction of the blade body 2 .

[0029] The first blade surface 31 and the second blade surface 32 can realize cutting and peeling correspondingly. Different blade surfaces can be used for cutting and peeling respectively during acupuncture, ensuring that the doctor will not cause the needle knife blade surface to bend due to force or fatigue during acupuncture, thereby solving the technical problem of easy curling of the blade edge.

[0030] Specifically, Figure 2-3 As shown, a threaded column 5 is installed in the inner cavity of the notch 4, one end of the threaded column 5 is fixedly connected to the blade body 2, and the other end of the threaded column 5 extends out of the blade body 2;

[0031] A thread groove 6 which is threadably connected to the thread column 5 is formed at one end of the blade tip 3 close to the blade body 2 .

[0032] The detachable connection between the blade body 2 and the blade tip 3 is achieved through the threaded connection between the threaded column 5 and the threaded groove 6. The threaded connection is easy to disassemble, and no excessive connection gap will be generated after the blade body 2 and the blade tip 3 are connected.

[0033] Further, such as Figure 2-3 As shown, the length of the threaded column 5 extending out of the blade body 2 is one quarter of the length of the blade tip 3. Since the blade tip 3 adopts a flat blade structure, the end of the blade tip is sharper, and the appropriate connection length can not only make the blade body 2 and the blade tip 3 firmly connected, but also the length of the threaded column 5 extending into the blade tip 3 will not interfere with the strength of the blade tip 3.

[0034] Moreover, the short processing length can also reduce the difficulty of manufacturing the blade body 2 and the blade tip 3.

[0035] Since the notch 4 needs to maintain a certain distance from the threaded column 5 , the connection between the blade body 2 and the blade tip 3 is different from other parts of the blade body 2 .

[0036] Specifically, Figure 2-3 As shown, the distance between the outer side wall of the threaded column 5 and the inner side wall of the slot 4 is 0.3-0.5 mm.

[0037] Such a spacing can not only meet the size of the diameter of the blade 2 itself, but also form a cavity at the end of the blade 2. The formation of the cavity can facilitate ultrasonic recognition. Due to the different wall thicknesses, ultrasonic recognition will also produce differences, thereby accurately identifying the position of the blade tip 3.

[0038] Further, such as Figure 3 As shown, the slot 4 is arranged in an isosceles trapezoidal shape, with the top of the longer end of the slot 4 facing toward the blade tip 3, and the bottom of the longer end of the slot 4 facing away from the blade tip 3. In this way, the slot 4 can form cavities with different inner diameters, and the cavities with different inner diameters can be further identified by the ultrasonic instrument, so that the position of the blade tip 3 can be grasped more accurately.

[0039] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A split needle knife, characterized in that: The knife comprises a knife handle (1), a knife body (2) and a knife tip (3), wherein the knife handle (1) is fixedly connected to the knife body (2), and the knife body (2) is detachably connected to the knife tip (3); The blade tip (3) is configured as a double-sided blade, each of which is provided with a first blade surface (31) and a second blade surface (32), and the first blade surface (31) and the second blade surface (32) are connected at the ends; A notch (4) is provided at the connection between the blade body (2) and the blade tip (3); the notch (4) forms an area at the connection between the blade body (2) and the blade tip (3) that can be detected by an ultrasonic instrument, so as to accurately grasp the specific position of the blade tip (3).

2. A split needle knife according to claim 1, characterized in that: The first blade surface (31) and the second blade surface (32) are both bevel blade surfaces, and the first blade surface (31) and the second blade surface (32) are both bent inwardly in the axial direction of the blade body (2).

3. The split-type needle knife according to claim 1, characterized in that: A threaded column (5) is installed in the inner cavity of the notch (4), one end of the threaded column (5) is fixedly connected to the blade (2), and the other end of the threaded column (5) extends out of the blade (2); A thread groove (6) threadably connected to the thread column (5) is formed at one end of the blade tip (3) close to the blade body (2).

4. A split needle knife according to claim 3, characterized in that: The notch (4) is arranged in an isosceles trapezoidal shape, the top of the longer end of the notch (4) faces the side of the knife tip (3), and the bottom of the longer end of the notch (4) faces away from the side of the knife tip (3).

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