CN211934130U

CN211934130U - Coaxial puncture needle

Info

Publication number: CN211934130U
Application number: CN202020115260.4U
Authority: CN
Inventors: 胡超宇
Original assignee: Pu'ang Hangzhou Medical Technology Co ltd
Current assignee: Puang (Hangzhou) Medical Technology Co.,Ltd.
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-17
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a coaxial pjncture needle, including coaxial needle core, coaxial needle tubing, needle base, length adjustment knob and screw cap, coaxial needle tubing rear end and needle base fixed connection, coaxial needle core wears to establish in coaxial needle tubing, the rear end and the screw cap fixed connection of coaxial needle core, length adjustment knob's front end and needle base threaded connection, length adjustment knob's rear end and screw cap threaded connection. According to the technical scheme, the length adjusting knob is additionally arranged between the needle base and the threaded cap, and the length of the sampling groove is adjusted by matching with the biopsy needle, so that the size of a sample of a sampled tissue is adjusted.

Description

Coaxial puncture needle

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a coaxial pjncture needle for living tissue sample.

Background

The biopsy device is a medical instrument and is suitable for sampling living tissues of various organs such as liver, kidney, lung, prostate, mammary gland, thyroid and the like, sucking cells and the like. Has the characteristics of compact structure, convenient use and the like.

Sometimes, when in clinical operation, the same part needs to be punctured for multiple times, in order to reduce the damage caused by multiple times of advancing and retreating of the biopsy needle, the coaxial needle is clinically used, the biopsy needle enters through a biopsy hole of the coaxial needle, the damage caused by multiple times of needle inserting can be reduced, and the needle channel planting rate is reduced. Especially lung biopsy, can effectively reduce the incidence of pneumothorax.

There are pathological tissues with different sizes needing biopsy clinically, but the sampling length of the biopsy needle on the market at present is only two, 10mm or 20mm, especially the full-automatic biopsy needle has only one specification of 20mm, and the sampling of a small sample can cause the injury of oversampling to the human body.

Disclosure of Invention

In order to solve the technical problem, the utility model aims to provide a coaxial puncture needle, which is provided with a length adjusting knob and can be used in cooperation with a biopsy needle to adjust the sampling length.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a coaxial pjncture needle, including coaxial needle nook closing member (1), coaxial needle tubing (2), needle base (4), length adjustment knob (5) and screw cap (6), coaxial needle tubing (2) rear end and needle base (4) fixed connection, coaxial needle nook closing member (1) is worn to establish in coaxial needle tubing (2), the rear end and the screw cap (6) fixed connection of coaxial needle nook closing member (1), the front end and the needle base (4) threaded connection of length adjustment knob (5), the rear end and the screw cap (6) threaded connection of length adjustment knob (5).

Preferably, the rear end of the needle base (4) is provided with an external thread part (42), and the length adjusting knob (5) is screwed with the external thread part (42) through an internal thread.

Preferably, the needle base (4) is provided with a plurality of scale marks (41).

Preferably, the length adjusting knob (5) is provided with a luer connector (51) at the rear part, and the threaded cap (6) is in threaded connection with the luer connector (51).

Preferably, the coaxial needle tube (2) is sleeved with a soft rubber cap (3).

The utility model discloses owing to adopted above technical scheme, through increasing a length adjust knob between needle base and screw cap, supporting biopsy needle uses the length of adjusting the sample groove to the sample size of adjustment sample tissue.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of a portion of the structure of the present invention;

FIG. 3 is a schematic assembly view of the present invention;

FIG. 4 is a schematic view of the structure of the present invention engaged with a biopsy needle (normal state);

fig. 5 is a schematic view of the structure of the present invention engaged with a biopsy needle (after length adjustment).

Wherein, 1, the needle core of the coaxial needle; 2. a coaxial needle tube; 3. a soft rubber cap; 4. a needle base; 5. a length adjustment knob; 6. a threaded cap; 11. a biopsy needle core; 111. a sampling groove; 12. a biopsy needle cannula.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, the coaxial puncture needle comprises a coaxial needle core 1, a coaxial needle tube 2, a needle base 4, a length adjusting knob 5 and a threaded cap 6, wherein the rear end of the coaxial needle tube 2 is fixedly connected with the needle base 4, the coaxial needle core 1 is arranged in the coaxial needle tube 2 in a penetrating manner, the rear end of the coaxial needle core 1 is fixedly connected with the threaded cap 6, the front end of the length adjusting knob 5 is in threaded connection with the needle base 4, and the rear end of the length adjusting knob 5 is in threaded connection with the threaded cap 6.

In the present embodiment, as shown in fig. 2 and 3, the needle base 4 is provided at the rear end thereof with an external thread portion 42, and the length adjustment knob 5 is screwed to the external thread portion 42 via an internal thread, so that the length of the entire coaxial puncture needle can be extended by increasing the length adjustment knob 5, and when a biopsy needle is inserted into the coaxial puncture needle for biopsy sampling, the length of the core of the biopsy needle extending out of the coaxial needle tube can be adjusted to adjust the exposed length (sampling length) of the sampling groove.

In this embodiment, the needle base 4 is provided with a plurality of scale marks 41, so that the doctor can conveniently determine the extending length of the sampling slot of the biopsy needle core when rotating the length adjusting knob 5. The length adjusting knob 5 is provided with a luer connector 51 at the rear part, the threaded cap 6 is in threaded connection with the luer connector 51, and the luer connector 51 can be connected with a syringe during injection. The coaxial needle tube 2 is sleeved with a soft rubber cap 3.

The utility model discloses the operation explanation as follows:

in a normal use state, the screw cap 6 and the coaxial needle core 1 are removed from the needle base 4, and the penetrating biopsy needle core 11 and the biopsy needle tube 12 are inserted into the coaxial needle tube 2, as shown in fig. 4, and at this time, the length of the biopsy sample is taken to be the length of the biopsy needle groove 111 without adding a length adjusting knob.

When the length is adjusted, the length adjusting button 5 is additionally arranged on the needle base 4, and the biopsy needle core 11 and the biopsy needle tube 12 are inserted into the coaxial needle tube 2, as shown in fig. 5, in this case, a part of the sampling groove 111 can be arranged in the coaxial needle tube, thereby reducing the sampling length. The sampling length can be further adjusted by rotating the length adjusting knob 5 to adjust the thread matching length of the length adjusting knob and the needle base 4.

The length adjusting knob can be selectively matched in the scheme, when the length adjusting knob is not selected, the sampling length is the sampling length of the biopsy needle, and after the length adjusting knob is added, the relative position of the length adjusting knob can be adjusted to adjust the sampling length. The current biopsy needle has a sampling length of 20mm, and the partial semi-automatic biopsy needle has a sampling length of 10 mm. The relative position of the length adjusting knob and the needle base is adjusted, so that the sampling length of the living tissue can be adjusted within the range of 5-20 mm. When a small focus is touched, flexible sampling can be performed according to the size of the focus, damage is reduced to the maximum extent, and accurate sampling is realized.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a coaxial pjncture needle, a serial communication port, including coaxial needle nook closing member (1), coaxial needle tubing (2), needle base (4), length adjust knob (5) and screw cap (6), coaxial needle tubing (2) rear end and needle base (4) fixed connection, coaxial needle nook closing member (1) is worn to establish in coaxial needle tubing (2), the rear end and the screw cap (6) fixed connection of coaxial needle nook closing member (1), the front end and the needle base (4) threaded connection of length adjust knob (5), the rear end and the screw cap (6) threaded connection of length adjust knob (5).

2. A coaxial puncture needle according to claim 1, wherein the needle base (4) is provided at the rear end thereof with an external thread portion (42), and the length adjustment knob (5) is threadedly coupled to the external thread portion (42) through an internal thread.

3. A coaxial puncture needle according to claim 1, characterized in that the needle base (4) is provided with a plurality of graduation marks (41).

4. A coaxial puncture needle according to claim 1, wherein the length adjusting knob (5) is provided at a rear portion thereof with a luer fitting (51), and the screw cap (6) is screw-coupled with the luer fitting (51).

5. A coaxial puncture needle according to claim 1, characterized in that a soft rubber cap (3) is sleeved on the coaxial needle tube (2).