WO2022104536A1

WO2022104536A1 - Puncture needle

Info

Publication number: WO2022104536A1
Application number: PCT/CN2020/129424
Authority: WO
Inventors: 王沁
Original assignee: 苏州市立普医疗科技有限公司
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2022-05-27

Abstract

A puncture needle, comprising: an outer needle assembly (2) and an inner needle assembly (1) sleeved inside of the outer needle assembly (2), the outer needle assembly (2) comprises an outer needle seat (21) and an outer needle (22) located at one end of the outer needle seat (21), the inner needle assembly (1) comprises an inner needle seat (11) and an inner needle (12) located at one end of the inner needle seat (11). An inner needle tip (121) protrudes beyond the outer needle (22), and the inner needle tip (121) is tapered. The puncture needle can reduce the resistance when the needle is inserted into the human body, improving the convenience for surgical staff and the accuracy of operations, relieving the pain suffered by a patient, and improving operation efficiency.

Description

a puncture needle

technical field

The invention relates to the field of medical instruments, in particular to a puncture needle used for puncture/drug injection/drainage and suction of body fluids.

Background technique

Bone and soft tissue tumors are diseases that seriously endanger human health and life. In recent years, the incidence has gradually increased, and the age of onset has gradually decreased. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. The correct diagnosis requires a combination of clinical, imaging and pathology. Among them, the pathological diagnosis plays a key role in the selection of the treatment plan. Needle biopsy is the main way to obtain pathological diagnosis.

During the procedure of puncture/drug injection/body fluid drainage and aspiration, the puncture needle needs to be pierced into the human body. Ordinary puncture needle products generally have a beveled surface structure. Therefore, when the ordinary puncture needle penetrates the human body, the resistance is relatively large, and it requires a large force to penetrate the human body, which is prone to the problem of unsmooth needle insertion, thereby increasing the pain of the patient.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a puncture needle, the inner needle of the puncture needle is designed into a tapered structure, which can effectively reduce the resistance of the puncture needle when it is inserted into the human body, and greatly increase the convenience of the operator and the accuracy of the operation. It can reduce the pain of patients and improve the efficiency of surgery.

To achieve the above object, according to one aspect of the present invention, a puncture needle is provided.

A puncture needle of the present invention comprises: an outer needle assembly and an inner needle assembly sheathed in the outer needle assembly, the outer needle assembly includes an outer needle seat and an outer needle located at one end of the outer needle seat, the inner needle The assembly includes an inner needle hub and an inner needle at one end of the inner needle hub; the inner needle tip extends beyond the outer needle, and the inner needle tip is tapered.

Optionally, the inner needle tip is a conical structure or a triangular pyramid structure.

Optionally, a hand position for assisting the puncture operation is protruded from the outer wall of the outer needle seat, and the hand position is symmetrically arranged around the axis of the outer needle seat.

Optionally, a score line is provided on the outer wall of the end of the outer needle away from the outer needle seat.

Optionally, the hand position and the outer needle seat are perpendicular to each other.

Optionally, the outer needle seat is a hollow structure, and the hollow structure communicates with the hollow structure of the outer needle.

Optionally, the scribe line is a spiral line.

Optionally, the helical lines are crossed.

Optionally, a buoy is provided at the connection between the outer needle and the outer needle seat, and the outer needle penetrates the buoy and is then connected to the outer needle seat.

According to the technical solution of the present invention, by designing the inner needle of the puncture needle into a tapered structure, the resistance of the puncture needle when the needle is inserted into the human body can be effectively reduced, the convenience of the operator and the accuracy of the operation are improved, and the patient is relieved. Pain, speeding up the efficiency of the operation.

Description of drawings

For purposes of illustration and not limitation, the application will now be described in accordance with preferred embodiments of the invention, particularly with reference to the accompanying drawings, wherein:

Fig. 1 is one of the exploded schematic diagrams of the puncture needle of the embodiment of the present invention;

Fig. 2 is the second exploded schematic diagram of the puncture needle of the embodiment of the present invention;

3 is a schematic diagram of the inner needle tip of the puncture needle according to the embodiment of the present invention having a triangular pyramid structure;

4 is a schematic diagram of the inner needle tip of the puncture needle according to the embodiment of the present invention having a conical structure;

FIG. 5 is a schematic structural diagram of a puncture needle according to an embodiment of the present invention.

Description of reference numerals: inner needle assembly 1, inner needle seat 11, inner needle 12, inner needle tip 121, outer needle assembly 2, outer needle seat 21, hand position 211, outer needle 22, outer needle outlet 221, engraved line 222 , buoy 3, protective cover 4.

Detailed ways

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding and should be considered as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted from the following description for clarity and conciseness.

Referring to FIGS. 1 to 5 , a puncture needle of the present invention includes an outer needle assembly 2 and an inner needle assembly 1 sheathed in the outer needle assembly 2. The outer needle assembly 2 includes an outer needle seat 21 and an outer needle located in the outer needle assembly 2. The outer needle 22 at one end of the seat 21, the inner needle assembly 1 includes the inner needle seat 11 and the inner needle 12 at one end of the inner needle seat 11; the inner needle tip 121 extends beyond the outer needle 22, and the inner needle tip 121 is tapered. In particular, the inner needle tip 121 is a conical structure or a triangular pyramid structure. When the medical staff pushes the puncture needle to travel in the human body, the resistance when the needle is inserted is greatly reduced, which greatly increases the convenience of the operator and the accuracy of the operation, reduces the pain of the patient, and speeds up the efficiency of the operation.

A hand position 211 for assisting the puncture operation is protruded from the outer wall of the outer needle seat 21 in the embodiment of the present application. The hand position 211 is symmetrically arranged with the axis of the outer needle seat 21 as the center. There can be two hand positions along the outer needle seat. 21 are arranged radially opposite to each other. When the puncture needle is in use, the operator can hold the puncture needle stably through two hand positions, and the operation is convenient. The hand position can also be an integral round cake structure. When the puncture needle is used, it can be better pressed and applied, and the puncture can be performed more safely. Before preparing for the puncture operation, since the axis of the needle seat 21 is set symmetrically with the center outside the hand position, it can be stably placed on the operating table. , will not roll off easily.

The hand position 211 is a plate-like structure, and the hand position and the outer needle seat 21 are perpendicular to each other. Using this setting is helpful for the operator to hold the puncture needle and avoid the operator from slipping off during the operation. Moreover, the hand position can also be adjusted according to the actual situation. It can be made into a rectangular plate shape, a polygonal plate shape, etc. according to the needs or the habit of the operator.

The outer needle seat 21 is a hollow structure, and the hollow structure communicates with the hollow structure of the outer needle 22 . A buoy 3 is provided at the connection between the outer needle 22 and the outer needle base 21 , and the outer needle 22 penetrates the buoy 3 and is then connected to the outer needle base 21 .

One end of the outer needle 22 away from the outer needle seat 21 is provided with a score line 222 on the outer wall. The score line 222 is a spiral line, and the spiral lines are crossed; the score line 222 can also be a circular line arranged in parallel; During the puncture operation, with the assistance of the hand position, the operator holds the hand position 211 tightly and pierces the puncture needle into the human body with force. When the puncture needle enters the vicinity of the human body lesion, the probe transducer emits ultrasonic waves and irradiates the surface of the outer needle 22. , especially in the helix, after a certain angle of reflection, the ultrasonic signal can be more reflected to the probe converter, so that the image displayed by the ultrasonic imaging device is very clear, and the position of the outer needle 22 can be monitored in real time. Sampling of the thyroid gland, drug injection after removal of the internal needle, or drainage and aspiration of bodily fluids can be performed (no hand position is required for injection or aspiration).

One end of the outer needle 22 away from the outer needle base 21 is an outer needle outlet 221 of a needle-like structure, and the helix is close to the outer needle outlet. With this setting, since there are more ultrasonic signals reflected to the probe converter near the helix, the puncture of the outer needle outlet can be displayed on the ultrasonic imaging device in real time and clearly, which is convenient for medical staff to judge and follow one step operation.

One end of the inner needle 12 away from the inner needle seat 11 is the inner needle outlet, and the inner needle outlet has the same needle-like structure as the outer needle outlet. This design facilitates puncture. The inner needle hub 11 includes a second handle portion and a connecting portion located at one end of the second handle portion. The connecting portion is connected to the inner needle 12. When the inner needle assembly 1 and the outer needle assembly 2 are combined, the inner needle 12 penetrates the outer needle hub. 21 and the outer needle 22, and the inner needle seat 11 and the outer needle seat 21 are snap-connected.

The puncture needle also includes a protective cover 4, which is sleeved on the outer needle and is fastened together with the buoy 3. The protective cover 4 can be used to protect the puncture needle so as to prevent the puncture needle from being polluted when not in use .

When the puncture needle of the present invention is in use, when the medical staff pushes the puncture needle to travel in the human body, the resistance during needle insertion is reduced, the convenience of the operator and the accuracy of the operation are improved, the pain of the patient is reduced, and the the efficiency of surgery.

The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

A puncture needle, comprising: an outer needle assembly and an inner needle assembly sheathed in the outer needle assembly, the outer needle assembly includes an outer needle seat and an outer needle located at one end of the outer needle seat, the inner needle assembly includes an inner needle assembly A needle seat and an inner needle located at one end of the inner needle seat; it is characterized in that the needle tip of the inner needle extends beyond the outer needle, and the needle tip of the inner needle is tapered.
The puncture needle according to claim 1, wherein the inner needle tip is a conical structure or a triangular pyramid structure.
The puncture needle according to claim 1 or 2, wherein a score line is provided on the outer wall of the end of the outer needle away from the outer needle seat.
The puncture needle according to claim 3, wherein a hand position for assisting the puncture operation is protruded from the outer wall of the outer needle seat, and the hand position is symmetrically arranged with the axis of the outer needle seat as the center .
The puncture needle according to claim 4, wherein the hand position and the outer needle seat are perpendicular to each other.
The puncture needle according to claim 1, wherein the outer needle seat is a hollow structure, and the hollow structure communicates with the hollow structure of the outer needle.
The puncture needle according to claim 3, wherein the score line is a spiral line.
The puncture needle according to claim 7, wherein the helical lines are crossed.
The puncture needle according to claim 1, wherein a buoy is provided at the connection between the outer needle and the outer needle seat, and the outer needle penetrates the buoy and is then connected to the outer needle seat.