CN211213273U - Disposable endoscopic ultrasound suction biopsy needle - Google Patents

Abstract

The utility model relates to a disposable endoscope ultrasonic suction biopsy needle, which is integrally wrapped on the outside of a scale rod (5) by a stop cap (4), a hand screw (6) and a biopsy handle (3), and the scale rod (5) There are handle connecting tube (8), pipeline (9), biopsy needle (10) inside, a metal sleeve (11) is embedded in the front end of pipeline (9), and a biopsy needle (10) is pierced inside A guide wire (2) of equal length; a needle core (13) is provided at the joint of the biopsy handle (3) and the biopsy needle (10), and one end of the needle core (13) is the guide wire entrance and the biopsy handle (3). ) The guide wire cap is connected, and the other end is the guide wire outlet connected with the inner hole of the biopsy needle (10), and the outer diameter of the guide wire inlet is larger than the outer diameter of the guide wire outlet. The utility model relates to a disposable endoscope ultrasonic suction biopsy needle, which has novel and unique structure and reliable operation.

Description

Disposable endoscopic ultrasound suction biopsy needle

technical field

The utility model relates to a disposable endoscope ultrasonic suction biopsy needle, which is mainly used for inspection and sampling of oncology or etiology specimens in endoscope operation.

Background technique

When diagnosing a disease, in order to accurately find out the cause, it is necessary to biopsy the lesion. The doctor uses medical instruments to obtain a certain amount of living tissue from the lesion for pathological analysis, so as to treat the symptoms. A common device in the prior art is a shotgun biopsy needle, which is released by a built-in spring to allow the biopsy needle to perform biopsy in the lesion; various measures are used during use, such as B-ultrasound, CT, etc. Puncture the lesion, then release the spring, and the biopsy needle quickly punctures in the lesion. If no tissue is obtained at one time, the above actions need to be repeated to increase the probability of injury; at the same time, because the force is composed of a spring, it is difficult to control the depth of the biopsy needle, etc. For biopsy of lesions adjacent to important organs, the shotgun biopsy needle cannot obtain cytological specimens, and it cannot be used for liquid lesions, which limits its use.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a disposable endoscope ultrasonic suction biopsy needle with novel structure and reliable operation in view of the shortcomings of the prior art.

In order to achieve the above purpose, a disposable endoscope ultrasonic suction biopsy needle is designed, which is characterized in that it comprises a guide wire cap 1, a guide wire 2, a biopsy handle 3, a stop cap 4, a scale rod 5, a hand screw 6 , connecting seat 7, handle connecting tube 8, pipeline 9, biopsy needle 10, metal sleeve 11, guide wire cap seat 12, needle core 13, stop cap 4, hand screw 6, biopsy handle 3 as a whole wrapped in the scale Outside the rod 5, the scale rod 5 has a handle connecting tube 8, a pipeline 9, and a biopsy needle 10. A metal sleeve 11 is embedded in the front end of the pipeline 9, and an equal-length guide is worn inside the biopsy needle 10. Wire 2; a needle core 13 is provided at the junction of the biopsy handle 3 and the biopsy needle 10, and one end of the needle core 13 is the guide wire inlet and the biopsy handle 3 guide wire cap is connected, and the other end is the guide wire outlet and the biopsy needle. The inner holes of 10 are connected, and the outer diameter of the guide wire inlet is larger than the outer diameter of the guide wire outlet.

Preferably, the needle core 13 adopts a funnel-shaped structure or a conical structure to ensure that the guide wire 2 can smoothly penetrate into the inner hole of the biopsy needle 10 in any state.

Preferably, the biopsy handle 3 and the biopsy needle 10 are fixedly connected at the top, the biopsy needle 10 is inserted into the inner hole of the scale rod 5, the inner cavity of the biopsy handle 3 can slide freely outside the scale rod 5, and both ends are limited by the stop caps 4 , at any position, the needle out length of the biopsy needle 10 can be adjusted by positioning and locking the screw 6 by hand.

Preferably, a small spring is placed at one end of the head of the pipeline 9 to abut against the biopsy needle 10 to protect the head of the needle tube and prevent the back and forth movement of the needle tube in the cannula from damaging the needle tube head and the needle tube head from damaging the cannula.

Preferably, the front biopsy handle 3 and the scale rod 5 are tightened by means of locking screws, and the bottom of the scale rod groove is knurled into a mesh structure.

Preferably, a scale adjustment lock is provided between the biopsy handle 3 and the scale rod 5, the scale rod scale is engraved with a scale in millimeters, and the extension of the needle tube is adjusted by sliding the rear handle on the scale rod, and the length is determined by the scale The control position is locked by the locking screw.

Preferably, the gap between the biopsy handle 3 and the scale rod 5 is 0.5 mm to ensure smooth movement.

Preferably, the needle of the needle tube has two beveled corners in the shape of sharp edges, the middle point between the two beveled corners serves as the golden section point, and the outer surface of the needle is uniformly distributed along the circumferential direction with cylindrical grooves.

Preferably, a segment of annular grooves are evenly distributed along the circumferential direction on the surface of the needle tube at a distance of 4 mm from the needle tip.

The utility model relates to a disposable endoscope ultrasonic suction biopsy needle, which has a novel and unique structure and reliable operation. There is a needle core connection shape with a tapered structure at the end of the needle tube to ensure the accurate guidance of the guide wire.

Description of drawings

Figure 1 is a partial view of the needle core.

FIG. 2 is a schematic structural diagram of the utility model.

Figure 3 is a partial view of the thumb screw.

Figure 4 is a partial view of the scale rod of the scale scale.

Fig. 5 is a distribution view of cylindrical grooves.

FIG. 6 is a partial view of the outer surface of the needle of FIG. 5 .

FIG. 7 is a partial view of the cylindrical groove of FIG. 5 .

Description of the marks in the figure

1 Guide Wire Cap, 2 Guide Wire, 3 Biopsy Handle, 4 Stop Cap, 5 Scale Rod, 6 Thumb Screws, 7 Connection Base, 8 Handle Connection Tube, 9 Pipeline, 10 Biopsy Needle, 11 Metal Sleeve, 12 Guide wire cap holder, 13 pins.

Detailed ways

The technical solutions of the present utility model will now be further described with reference to the accompanying drawings and embodiments, which are believed to be clear to those skilled in the art.

As shown in Figure 2, a disposable endoscopic ultrasonic suction biopsy needle, its components include 1 guide wire cap, 2 guide wire, 3 biopsy handle, 4 stop cap, 5 scale rod, 6 thumb screws, 7 Connection seat, 8 handle connection tubes, 9 pipelines, 10 biopsy needles, 11 metal sleeves, 12 guide wire cap seats, and 13 needle cores;

Assembling the above components, the stop cap 4, the hand screw 6, and the biopsy handle 3 are integrally wrapped on the outside of the scale rod 5, and the scale rod 5 has a handle connecting pipe 8, a pipeline 9, and a biopsy needle 10. In the pipeline 9 A metal sleeve 11 is embedded in the front end of the biopsy needle 10, and a guide wire 2 of equal length is passed through the inside of the biopsy needle 10. The biopsy handle 3 and the biopsy needle 10 are fixedly connected at the top, the biopsy needle 10 is inserted into the inner hole of the scale rod 5, the inner cavity of the biopsy handle 3 can slide freely outside the scale rod 5, and both ends are limited by the stop caps 4. The position is locked by the hand screw 6 to adjust the length of the needle exit of the biopsy needle 10 to ensure that the length of the needle exit each time is controlled and the position is fixed during repeated puncture.

As shown in FIG. 1 , the connection between the biopsy needle 10 and the biopsy handle 3 adopts a funnel-shaped structure to ensure that the guide wire 2 can smoothly penetrate into the inner hole of the biopsy needle 10 in any state.

The front biopsy handle 3 and the scale rod 5 are tightened by hand screw, the screw head is round head shape, and the hand screw part is knurled to increase the friction coefficient.

The rear scale rod 5 is provided with a scale scale, and the scale rod scale is engraved with a scale in millimeters. The biopsy handle is slid on the scale rod to adjust the expansion and contraction of the needle tube, and the length is controlled by the scale rod scale. The position is locked by a screw by hand. tight, as shown in Figure 3.

As shown in Figure 5 and Figure 6 , the needle of the needle tube is sharp-edged with two beveled corners, the middle point between the two beveled corners is the golden section point, and the total length of the two cuttings is 3 mm. The length of the golden section point of the segment is approximately equal to 3*0.618=1.854, and the length of the second segment is approximately equal to 3-1.854=1.146. Such two cuts make the needle sharper and the puncture is the smallest. A circular groove is evenly distributed along the circumferential direction on the surface of the needle tube at a distance of 4 mm from the needle tip. The outer surface of the needle adopts uniformly distributed cylindrical holes along the circumferential direction, and the shape is as shown in the figure. There are also 12 evenly distributed around the outer needle.

Claims (9)

1. A disposable endoscope ultrasonic suction biopsy needle is characterized by comprising a guide wire cap (1), a guide wire (2), a biopsy handle (3), a stop cap (4), a graduated rod (5), a hand-screwed screw (6), a connecting seat (7), a handle connecting pipe (8), a pipeline (9), a biopsy needle (10), a metal sleeve (11), a guide wire cap seat (12) and a needle core (13), wherein the stop cap (4), the hand-screwed screw (6) and the biopsy handle (3) are integrally wrapped outside the graduated rod (5), the handle connecting pipe (8), the pipeline (9) and the biopsy needle (10) are arranged inside the graduated rod (5), the metal sleeve (11) is embedded in the front end of the pipeline (9), and the guide wire (2) with equal length is threaded inside the biopsy needle (10); a needle core (13) is arranged at the joint of the biopsy handle (3) and the biopsy needle (10), one end of the needle core (13) is a guide wire inlet which is connected with a guide wire cap of the biopsy handle (3), the other end of the needle core is a guide wire outlet which is connected with an inner hole of the biopsy needle (10), and the outer diameter of the guide wire inlet is larger than the outer diameter of the guide wire outlet.

2. A disposable endoscopic ultrasound aspiration biopsy needle according to claim 1, characterized in that the core (13) is funnel-shaped or cone-shaped to ensure a smooth penetration of the guide wire (2) into the inner bore of the biopsy needle (10) in any state.

3. The disposable endoscope ultrasonic suction biopsy needle as set forth in claim 1, characterized in that the biopsy handle (3) and the biopsy needle (10) are fixedly connected at the top end, the biopsy needle (10) is inserted into the inner hole of the graduated rod (5), the inner cavity of the biopsy handle (3) can freely slide outside the graduated rod (5), both ends are limited by the stop cap (4), and the needle-out length of the biopsy needle (10) is adjusted by the locking of the hand screw (6) at any position.

4. The ultrasonic suction biopsy needle of a disposable endoscope is characterized in that a short section of spring is placed at one end of the head part of the pipeline (9) and is abutted against the biopsy needle (10) to protect the head part of the needle tube and prevent the needle tube from moving back and forth in the sleeve to damage the head part of the needle tube and the head part of the needle tube from damaging the sleeve.

5. The ultrasonic suction biopsy needle of a disposable endoscope is characterized in that a locking screw is adopted to screw down the biopsy handle (3) and the scale rod (5), and the bottom of the groove of the scale rod is knurled into a net structure.

6. The ultrasonic suction biopsy needle of a disposable endoscope is characterized in that a graduated scale adjusting lock is arranged between the biopsy handle (3) and a graduated rod (5), scales with millimeter units are marked on a graduated rod scale, the needle tube is adjusted to stretch by sliding a rear handle on the graduated rod, and the length is locked by a locking screw at a scale control position.

7. A disposable endoscopic ultrasound aspiration biopsy needle according to claim 1, wherein the clearance between the biopsy handle (3) and the graduated rod (5) is 0.5 mm ensuring smooth movement.

8. A disposable endoscopic ultrasound aspiration biopsy needle according to claim 1, wherein the needle head of the biopsy needle (10) is in the shape of a sharp edge with two bevels, the middle point between the two bevels being the golden section point, and the outer surface of the needle head adopts uniformly distributed cylindrical grooves in the circumferential direction.

9. The disposable endoscopic ultrasound aspiration biopsy needle of claim 8, wherein a circumferential groove is uniformly distributed on the surface of the needle cannula 4 mm from the needle tip.

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