CN219289611U

CN219289611U - Short needle point type needle head structure of rotary cutting needle and rotary cutting needle

Info

Publication number: CN219289611U
Application number: CN202222962963.2U
Authority: CN
Inventors: 费健; 付庄; 费腾
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-07-04
Anticipated expiration: 2032-11-08

Abstract

The utility model provides a short needlepoint type needle head structure of a rotary cutting needle and the rotary cutting needle, wherein the short needlepoint type needle head structure of the rotary cutting needle comprises: a needle point outer sleeve, wherein the end part of the needle point outer sleeve is provided with a needle point for rotary puncture; an inner layer cutting sleeve is arranged in the needle tip outer sleeve to form a nested structure, and a cutter head for rotary cutting is arranged at the end part of the inner layer cutting sleeve; a cutting through hole is formed in the needle point outer sleeve, and the cutting through hole exposes the cutter head; the distance between the tail of the needle point and the cutting through hole is 1-2 mm. The distance between the tail of the needle point and the cutting through hole is smaller, so that the requirements of puncture sampling, excision and the like of pathological tissues on a shallow surface layer in a minimally invasive puncture operation can be met.

Description

Short needle point type needle head structure of rotary cutting needle and rotary cutting needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a short needle point type needle head structure of a rotary cutting needle and the rotary cutting needle.

Background

The rotary cutting operation is used as a minimally invasive operation and is widely applied to the treatment process of breast lesions, varicose veins and the like. The existing rotary cutting needle is required to meet the operation task requirement of a shallower surface layer for the vacuum minimally invasive rotary cutting operation of the mammary gland under the guidance of ultrasound.

The search finds that:

the Chinese patent with publication No. CN1062361553A relates to a rotary cutting needle, but the axial dimensions of the needle head and the cutting opening are longer, so that the excision of the focus tissue with a shallower layer cannot be well completed, such as a nodule at a thyroid gland, and the like.

The chinese utility model patent with publication No. CN216022360U relates to a multifunctional negative pressure suction rotary-cut needle device, but it is also designed for operations such as breast and pulmonary tuberculosis, and the needle and cutting port are long in size, which has the same problems as the above-mentioned utility model patent.

The Chinese patent with publication number of CN213309944U relates to a rotary cutting needle tube structure, but the needle head and the cutting window still have the problem of oversized size, and the rotary cutting needle tube structure is only suitable for deep skin surgery and has poor application effect on shallow surgery.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a short needle point type needle head structure of a rotary cutting needle and the rotary cutting needle, so as to solve the problem that the traditional rotary cutting needle cannot well complete the operation task with a shallower surface layer due to longer needle head and cutting length and the like.

The utility model is realized by the following technical scheme:

according to one aspect of the present utility model, there is provided a short needle tip type needle structure of a rotary cutting needle, the short needle tip type needle structure comprising:

a needle point outer sleeve, wherein the end part of the needle point outer sleeve is provided with a needle point for rotary puncture;

an inner layer cutting sleeve is arranged in the needle tip outer sleeve to form a nested structure, and a cutter head for rotary cutting is arranged at the end part of the inner layer cutting sleeve;

a cutting through hole is formed in the needle point outer sleeve, and the cutting through hole exposes the cutter head; the distance between the tail of the needle point and the cutting through hole is 1-2 mm.

Further, the needle tip is formed at the end of the needle tip outer sleeve in a direct processing mode.

Further, the tool bit is a serrated tool bit.

Further, the tool bit adopts an arc-shaped cutting edge structure.

Further, a plurality of air holes are formed in the side wall, located at the rear end of the cutter head, of the inner layer cutting sleeve.

Further, the air holes are round holes; the air holes are uniformly arranged at intervals.

According to another aspect of the present utility model, there is provided a rotary cutting needle including an operation handle and the above-described short needle tip structure of the rotary cutting needle; the inside of operating handle is equipped with gear reducer, the needle point outer tube with gear reducer's shell is connected, inlayer cutting sleeve with gear reducer's output shaft.

Further, an electric control system and a motor are arranged in the operating handle, and the electric control system controls the motor to be connected with the gear reducer so as to control the rotation of the inner layer cutting sleeve.

Further, the operating handle is also respectively connected with a negative pressure pump, a power supply and an electric control system which are required by the rotary cutting needle during working.

Further, the operating handle is connected with the negative pressure pump, the power supply and the electric control system through cables at the bottom end respectively.

Compared with the prior art, the utility model has at least one of the following beneficial effects:

the short needle point type needle head structure of the rotary cutting needle and the rotary cutting needle shorten the distance between the tail part of the needle point and the cutting through hole, can meet the requirements of a shallow surface minimally invasive rotary cutting operation tool, avoid the cutting of structures such as skin by the shallow surface operation, and reduce the area of wounds.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a short needle tip structure of a rotary cutting needle according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a needle tip outer cannula and an inner cutting cannula according to an embodiment of the present utility model;

fig. 3 is a schematic view of a rotary cutting needle according to an embodiment of the present utility model.

In the figure: 1 is a needle tip outer sleeve, 2 is an inner layer cutting sleeve, 3 is an operating handle, 4 is a negative pressure pump, 5 is an electric control system, and 6 is a power supply.

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

The embodiment of the utility model provides a short needle point type needle head structure of a rotary cutting needle, and referring to fig. 1-2, the short needle point type needle head structure of the rotary cutting needle comprises a needle point outer sleeve 1 and an inner layer cutting sleeve 2, wherein: the end part of the needle tip outer sleeve 1 is provided with a needle tip for rotary puncture; the needle tip outer sleeve 1 is of a hollow design, the inner layer cutting sleeve 2 is arranged in the needle tip outer sleeve 1 to form a nested structure, and a cutter head for rotary cutting is arranged at the end part of the inner layer cutting sleeve 2; a cutting through hole (cutting opening) is formed in the needle tip outer sleeve 1, and the cutting through hole exposes out of the cutter head; the distance L between the tail of the needle tip and the cutting through hole is 1-2 mm, and the distance between the tail of the needle tip and the cutting through hole is smaller, so that the needle can be used for minimally invasive puncture and rotary cutting operation of the shallow surface layer, and the requirements of puncture sampling and cutting of pathological tissues of the shallow surface layer in the minimally invasive puncture operation are met.

In some embodiments, the needle tip is formed at the end of the needle tip outer sleeve 1 by direct processing, so as to avoid the damage to the integration caused by the procedures such as welding.

In some embodiments, the cutting head is a serrated cutting head, which is axially movable in the needle tip outer cannula 1, and the tissue is cut by the rotational movement of the serrated cutting head.

In some preferred embodiments, the cutting head employs an arcuate cutting edge configuration to cut tissue by beveled rotational movement of the arcuate cutting edge.

In some embodiments, a plurality of air holes are arranged on the side wall of the inner layer cutting sleeve 2, which is positioned at the rear end of the cutter head, and are used for attaching tissues to be cut to the inner layer cutting sleeve 2 during negative pressure suction.

In some preferred embodiments, the air holes are circular holes; the air holes are uniformly arranged at intervals.

Another embodiment of the present utility model provides a rotary cutting needle, referring to fig. 3, the rotary cutting needle includes an operation handle 3 and the above-mentioned short needle tip type needle structure of the rotary cutting needle; the inside of the operating handle 3 is provided with a gear reducer, the needle tip outer sleeve 1 is connected with the shell of the gear reducer, and the inner layer cutting sleeve 2 is connected with the output shaft of the gear reducer.

In some embodiments, an electric control system 5 and a motor are arranged inside the operation handle 3, and the electric control system 5 controls the motor to be connected with a gear reducer, so as to control the rotation of the inner layer cutting sleeve 2.

In some embodiments, the operating handle 3 is connected with the negative pressure pump 4, the power supply 6 and the electric control system 5 which are required by the rotary cutting needle during working through cables at the bottom end, so that puncture is realized, rotary cutting is performed after the pathological position is reached, and the cut tissue is subjected to negative pressure suction storage treatment.

By utilizing the short needle tip type needle head structure in the embodiment of the utility model, the needle head of the rotary cutting needle tool can be reasonably designed and replaced so as to meet different operation requirements and solve the problem that the rotary cutting needle tool is limited in application scene.

As shown in fig. 1 to 3, when the rotary cutting needle in the embodiment of the utility model is used, the rotary cutting needle is penetrated first, and after reaching a pathological position through means such as ultrasonic guidance, the cutting through hole reaches a tissue to be cut for rotary cutting. After each time the inner cutting cannula 2 completely cuts the tissue, the cut tissue is sucked into the rear end storage processing device of the operating handle 3 by negative pressure.

In the working process, after the power supply 6 is connected and the electric control system 5 is started, the operating handle 3 is held, the needle tip outer sleeve 1 is rotationally cut according to a predetermined puncture position, after the needle tip outer sleeve 1 is guided to reach a pathological position, the movement of the needle tip outer sleeve 1 is stopped, the inner cutting sleeve 2 is moved to control the opening of a cutting through hole, the negative pressure pump 4 is started, the inner cutting sleeve 2 is rotationally used for cutting tissues, after the cutting is completed, the negative pressure pump 4 is used for sucking out the tissues to a rear-end processing device, the cutting process is repeated until the cutting is completed, the cutting through hole is closed, the needle head is withdrawn, and the rotary cutting process is completed.

The operating handle 3 is provided with a key connected with the electric control system 5, and the electric control system 5 can control the cooperative operation of the needle tip outer sleeve 1, the inner layer cutting sleeve 2 and the negative pressure pump 4 through the key on the operating handle 3, so that the functions of tissue cutting, tissue suction, tissue storage and the like are completed.

According to the short needle point type needle head structure of the rotary cutting needle and the rotary cutting needle, the short needle point type needle head is adopted, the distance between the tail of the needle point and the cutting through hole is shortened, the requirement on a shallow surface minimally invasive rotary cutting operation tool can be met, the cutting of structures such as skin by the shallow surface operation is avoided, and the area of a wound is reduced.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the utility model.

Claims

1. A short needle tip type needle head structure of a rotary cutting needle, comprising:

2. The short needlepoint type needle head structure of the rotary cutting needle according to claim 1, wherein the needle point is formed at the end of the needle point outer sleeve in a direct processing manner.

3. The short needle tip structure of the rotary cutting needle according to claim 1, wherein the cutter head is a serrated cutter head.

4. The short needlepoint type needle head structure of the rotary cutting needle according to claim 1, wherein the cutter head adopts an arc-shaped cutting edge structure.

5. The short needle tip structure of the rotary cutting needle according to claim 1, wherein a plurality of air holes are provided on a side wall of the inner layer cutting sleeve at the rear end of the cutter head.

6. The short needlepoint needle structure of rotary cutting needle as claimed in claim 5, wherein said air hole is a circular hole; the air holes are uniformly arranged at intervals.

7. A rotary cutting needle, characterized by comprising an operation handle and the short needle tip type needle head structure of the rotary cutting needle according to any one of claims 1 to 6;

the inside of operating handle is equipped with gear reducer, the needle point outer tube with gear reducer's shell is connected, inlayer cutting sleeve with gear reducer's output shaft.

8. The rotary cutting needle according to claim 7, wherein the operating handle is internally provided with an electric control system and a motor, and the electric control system controls the motor to be connected with the gear reducer, thereby controlling the rotation of the inner cutting sleeve.

9. The rotary cutting needle according to claim 8, wherein the operating handle is further connected to a negative pressure pump and a power source, respectively, required for operation of the rotary cutting needle.

10. The rotary cutting needle according to claim 9, wherein the operating handle is connected to the negative pressure pump, the power supply and the electric control system, respectively, through cables at the bottom end.