CN104825211B - It is exclusively used in the puncture needle of the one-handed performance extracting superficial tissue - Google Patents

Abstract

A single-handed puncture needle specially used for extracting superficial tissue, including a puncture needle body and a puncture needle core, the puncture needle body includes a puncture needle body holding part and a puncture needle body extraction part, and the puncture needle core includes a puncture needle core The hand-held part and the puncture needle core filling part, the puncture needle body extraction part has a tubular extraction hollow part, after the puncture needle core filling part is inserted into the extraction hollow part of the puncture needle body extraction part, the space in the extraction hollow part is closed The filling part of the puncture needle core is full, and the handle part of the puncture needle core is provided with a collar for inserting fingers. The gap where the outer ring rotates is provided with a tension spring, one end of the stretch spring is fixedly connected to the outer ring, and the other end of the stretch spring is fixedly connected to the inner ring, which has the characteristics of simple operation and safety.

Description

Dedicated single-handed needle for superficial tissue extraction

technical field

The invention relates to a single-handed puncture needle specially used for extracting superficial tissues.

Background technique

With the continuous development of the medical level, ultrasound-guided fine-needle aspiration cytology biopsy has been more and more used in daily medical treatment in recent years. This method is applied under ultrasound monitoring, and the target cells of superficial organ tissues are obtained by lifting and inserting for pathological diagnosis, such as breast, thyroid, lymph nodes, etc. It is the fastest, simple and safe method for early diagnosis of benign and malignant targets. Compared with the previous histological biopsy, it has the advantages of less damage, less risk, and equally reliable results. This involves a very important tool - the puncture needle.

The puncture needle used in the past is a hollow and extremely thin round tubular structure, with an outer diameter of 20-25G, corresponding to an outer diameter of 0.9mm-0.4mm, which can be equipped with a solid needle core, which just fills the hollow part of the puncture needle The function of the solid needle core is to prevent tissue debris and other non-target tissues from entering the hollow part of the puncture needle during the puncture process, which may interfere or affect the diagnosis result. The reason why ultrasound-guided needle biopsy is safe is that the puncture path of the needle can always be carried out under the direct vision of the operator. During the actual puncture process, the operating physician must hold the probe with one hand and the puncture needle with the other hand. If a puncture needle without a solid needle core is used, tissue debris or non-target cells can easily enter the puncture needle , interfere or affect the accuracy of judging whether the target is benign or malignant; if a puncture needle with a solid needle core is used, the above situation can be avoided as much as possible, but there are also certain practical application problems. When the puncture needle reaches the target, the physical needle needs to be pulled out If the operator gives up the control of the puncture needle at this time to pull out the solid needle core and put the needle core in a safe place, due to the softness and elasticity of soft tissue, the puncture needle will shift and damage the surrounding area of the target. The risk to vital tissues and organs is greatly increased.

Contents of the invention

In view of the above technical problems, the present invention provides a simple and safe one-handed puncture needle specially used for extracting superficial tissue.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a single-handed puncture needle dedicated to extracting superficial tissue, including a puncture needle body and a puncture needle core, and the puncture needle body includes a hand-held part of the puncture needle body and a puncture needle body. A body extraction part, the puncture needle core includes a puncture needle core holding part and a puncture needle core filling part, the puncture needle body extraction part has a tubular extraction hollow part, and the puncture needle core filling part can be inserted into the puncture needle body extraction part In the extraction hollow part of the puncture needle core, the filling part of the puncture needle core is matched with the extraction hollow part, the hand-held part of the puncture needle body is matched with the hand-held part of the puncture needle core, and the filling part of the puncture needle core is inserted into the extraction part of the puncture needle body After extracting the hollow part, the space in the extracted hollow part is filled by the filling part of the puncture needle core. The hand-held part of the puncture needle core is provided with a collar for covering fingers, and the collar includes an outer ring and an inner ring. There is a gap between the outer ring and the inner ring for the inner ring to rotate relative to the outer ring, and a tension spring is provided on the gap, one end of the extension spring is fixedly connected to the outer ring, and the other end of the extension spring is connected to the inner ring. Ring fixed connection.

The beneficial effect of the one-handed operation puncture needle specially used for extracting superficial tissue provided by the present invention is: since it includes a puncture needle body and a puncture needle core, the puncture needle body includes a hand-held part of the puncture needle body and a puncture needle body extraction part, The puncture needle core includes a puncture needle core holding part and a puncture needle core filling part, the puncture needle body extraction part has a tubular extraction hollow part, that is to say a hollow extraction channel, and the puncture needle core filling part can be inserted into the puncture needle In the extraction hollow part of the needle body extraction part, the filling part of the puncture needle core is matched with the extraction hollow part, the hand-held part of the puncture needle body is matched with the hand-held part of the puncture needle core, and the filling part of the puncture needle core is inserted into the puncture needle After being inserted into the extraction hollow part of the body extraction part, the space in the extraction hollow part is filled by the filling part of the puncture needle core, and the hand-held part of the puncture needle core is provided with a collar for covering fingers, and the collar includes an outer ring and Inner ring, there is a gap between the outer ring and the inner ring for the inner ring to rotate relative to the outer ring, a tension spring is arranged on the gap, one end of the extension spring is fixedly connected with the outer ring, and the extension spring The other end is fixedly connected to the inner ring, so when operating, insert the filling part of the puncture needle core into the extraction hollow part of the extraction part of the puncture needle body, the space in the extraction hollow part is filled by the filling part of the puncture needle core, and insert the index finger into the inner ring , rotate the inner ring relative to the outer ring, the tension spring is stretched at this time, and a rotational tension is generated between the inner ring and the outer ring. The thumb and middle finger hold the hand-held part of the puncture needle for puncture. When reaching the target, operate the doctor’s index finger to lift Pull the collar, and the collar drives the puncture needle core to move. When the puncture needle core is completely separated from the extraction part of the puncture needle body, that is, when the filling part of the puncture needle core is completely separated from the extraction hollow part, the needle core is punctured under the tension of the tension spring. Rotating around the inner ring, the head of the puncture needle core points to the opposite direction of the original puncture needle, and the length of the one-handed operation puncture needle dedicated to extracting superficial tissue is relatively short, generally about 5 cm, so that the puncture needle core The process of completely withdrawing from the extracting part of the puncture needle body to the original state will not injure the operator and the patient, and will not affect the acquisition of target inner cells by the puncture needle. After the acquisition is completed, use the thumb and middle finger to push down the puncture needle core set on the index finger. The whole process is easy and safe to operate. The operator does not need to give up the control of the puncture needle to pull out the puncture needle core to avoid the displacement of the puncture needle , the risk of damaging important tissues and organs around the target is greatly reduced.

Further, the filling part of the puncture core closely cooperates with the extracting part of the puncture needle body, after the filling part of the puncture core is inserted into the extraction hollow part, the head of the filling part of the puncture core protrudes from the extraction hollow part, so that the tissue is broken Debris or non-target cells of interest are less likely to enter the extraction hollow.

Further, the hand-held part of the puncture needle body includes a hand-held handle of the puncture needle body. The handle, the handle of the puncture needle core includes a plug and a cap, the cap is provided with a limiting piece, a limiting groove is formed between the cap, the limiting piece and the plug, the collar is arranged on the cap and The collar is deformable, so that no relative movement can be ensured after the puncture needle core is inserted into the extraction hollow part, and the structure is stable. The deformable collar can adapt to the size of index fingers of different operators.

Further, the puncture needle extraction part includes a hollow triangular prism body of the puncture needle extraction part and a hollow triangular prism head of the puncture needle extraction part, and the three sides of the triangular prism body of the puncture needle extraction part are rounded In transition, the puncture needle core filling part includes a solid puncture needle core filling part triangular prism body, so that the structure of the triangular prism head of the puncture needle body extraction part increases the sharpness of the puncture needle and reduces the distance between the puncture needle and the target. The drag phenomenon that occurs when the target is lifted and inserted increases the probability of obtaining the cells in the target, and the triangular prism body that is extracted by the puncture needle body and the triangular prism body that is filled by the puncture needle core further increases the insertion of the puncture needle core into the hollow part of the extraction Finally, it can ensure that there is no relative movement, and the structure is more stable. Among them, the three sides of the triangular prism body in the extraction part of the puncture needle body are rounded, that is, passivated, so as to avoid damaging the operator's hand and aggravating the skin puncture during the lifting and insertion process. Mouth damage.

Further, the cross section of the triangular prism body of the extraction part of the puncture needle body is an isosceles triangle, and the side length of the isosceles triangle of the cross section of the triangular prism body of the extraction part of the puncture needle body is 0.6 mm to 0.9 mm. The cross-section of the triangular prism body of the filling part of the needle core is an isosceles triangle, and the side length of the isosceles triangle of the cross-section of the triangular prism body of the filling part of the puncture needle core is 0.4 to 0.7 mm. A puncture needle of this size is more suitable for puncturing , more smoothly when piercing.

Further, the inner wall of the outer ring is provided with an outer ring groove, the outer wall of the inner ring is provided with an inner ring groove, the outer ring groove is set opposite to the inner ring groove, and the tension spring is located The groove of the outer ring and the groove of the inner ring make the installation of the tension spring more stable, and the relative rotation of the inner ring and the outer ring is more stable.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic structural view of the puncture needle body of the one-handed operation puncture needle provided by the present invention for extracting superficial tissue.

Fig. 2 is a schematic structural view of the puncture needle core of the one-handed operation puncture needle provided by the present invention for extracting superficial tissue.

Fig. 3 is a structural schematic diagram of the cross-section of the triangular prism body of the extraction part of the puncture needle in Fig. 1 .

Fig. 4 is a structural schematic diagram of the cross-section of the triangular prism body of the filling part of the puncture needle core in Fig. 2 .

detailed description

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the embodiment of the puncture needle dedicated to extracting superficial tissue with one hand provided by the present invention includes a puncture needle body 1 and a puncture needle core 2, the puncture needle The needle body 1 includes a puncture needle body holding part 3 and a puncture needle body extraction part 4, the puncture needle core 2 includes a puncture needle core holding part 5 and a puncture needle core filling part 6, and the puncture needle body extraction part 4 has a tubular Extract the hollow part 7, the puncture needle core filling part 6 can be inserted into the extraction hollow part 7 of the puncture needle body extraction part 4, the puncture needle core filling part 6 is matched with the extraction hollow part 7, and the puncture needle body is held The part 3 cooperates with the puncture needle core holding part 5, and the puncture needle core filling part 6 is inserted into the extraction hollow part 7 of the puncture needle body extraction part 4, and the space in the extraction hollow part 7 is filled by the puncture needle core filling part 6 , the handle part 5 of the puncture needle core is provided with a collar 10 for covering fingers, and the collar 10 includes an outer ring 10-1 and an inner ring 10-2, and the outer ring 10-1 and the inner ring 10 -2 has a gap 10-3 for the inner ring 10-2 to rotate relative to the outer ring 10-1, the gap 10-3 is provided with a stretch spring 10-4, and one end of the stretch spring 10-4 is connected to The outer ring 10-1 is fixedly connected, and the other end of the extension spring 10-4 is fixedly connected to the inner ring 10-2, wherein the puncture needle extraction part 4 and the puncture needle core filling part 6 are made of strong and tough metal material production.

As shown in Figures 1 and 2, the puncture needle core filling part 6 closely cooperates with the puncture needle body extraction part 4. After the puncture needle core filling part 6 is inserted into the extraction hollow part 7, the head of the puncture needle core filling part 6 part protrudes from the extracting hollow part 7.

As shown in Figures 1 and 2, the puncture needle hand-held part 3 includes a puncture needle handle 11, the puncture needle handle 11 has a socket 12, and the puncture needle handle 11 is provided with a card. Head 13, the puncture needle core holding part 5 includes a puncture needle core handle 14, the puncture needle core handle 14 includes a plug 15 and a cap 16, and the cap 16 is provided with a stopper 17, the cap 16, A limiting groove 18 is formed between the limiting piece 17 and the plug 15 , and the collar 10 is disposed on the cap 16 .

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the puncture needle extraction part 4 includes a hollow puncture needle extraction part triangular prism body 19 and a hollow puncture needle extraction part triangular prism head 20, The three sides of the triangular prism body 19 of the extraction part of the puncture needle body are transitioned through rounded corners, and the filling part 6 of the puncture needle core includes a solid triangular prism body 21 of the puncture needle core filling part.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the cross section of the triangular prism body 19 of the extraction part of the puncture needle body is an isosceles triangle, and the cross section of the triangular prism body 19 of the extraction part of the puncture needle body is equal to The side length of the triangle is 0.6 mm to 0.9 mm, and the cross section of the triangular prism body 21 filled with the puncture needle core is an isosceles triangle. The side length is 0.4 to 0.7 mm.

As shown in Fig. 1 and Fig. 2, the inner wall of the outer ring 10-1 is provided with an outer ring groove 10-11, and the outer wall of the inner ring 10-2 is provided with an inner ring groove 10-21, so The outer ring groove 10-11 is arranged opposite to the inner ring groove 10-21, and the extension spring 10-4 is located on the outer ring groove 10-11 and the inner ring groove 10-21.

As required, detailed embodiments of the invention are disclosed herein, but it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in different and alternative forms. The drawings are not necessarily drawn to scale. Therefore, specific structural and functional details disclosed herein are not to be interpreted in limiting senses, but merely as a representative basis for teaching one skilled in the art to employ and practice the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims (10)

1. The puncture needle dedicated to the one-handed operation of extracting superficial tissue is characterized in that: it comprises a puncture needle body (1) and a puncture needle core (2), and the puncture needle body (1) includes a puncture needle body hand-held part ( 3) and the puncture needle extraction part (4), the puncture needle core (2) includes the puncture needle core holding part (5) and the puncture needle core filling part (6), and the puncture needle body extraction part (4) has A tubular extraction hollow part (7), the puncture needle core filling part (6) can be inserted into the extraction hollow part (7) of the puncture needle body extraction part (4), the puncture needle core filling part (6) and the extraction The hollow part (7) is matched, the puncture needle hand-held part (3) is matched with the puncture needle core hand-held part (5), and the puncture needle core filling part (6) is inserted into the puncture needle extraction part (4) After the hollow part (7) is extracted, the space in the extracted hollow part (7) is filled with the filling part (6) of the puncture needle core, and the handle part (5) of the puncture needle core is provided with a collar ( 10), the collar (10) includes an outer ring (10-1) and an inner ring (10-2), and an inner ring is provided between the outer ring (10-1) and the inner ring (10-2) (10-2) The slit (10-3) that rotates relative to the outer ring (10-1), the slit (10-3) is provided with a tension spring (10-4), and the stretch spring (10-4 ) is fixedly connected to the outer ring (10-1), and the other end of the extension spring (10-4) is fixedly connected to the inner ring (10-2). 2. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 1, characterized in that: the filling part (6) of the puncture needle core is closely matched with the extraction part (4) of the puncture needle body, so that After the puncture needle core filling part (6) is inserted into the extraction hollow part (7), the head of the puncture needle core filling part (6) protrudes from the extraction hollow part (7). 3. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 1 or 2, characterized in that: the hand-held part (3) of the puncture needle body includes a hand-held handle (11) of the puncture needle body, and the The puncture needle handle (11) has a socket (12), the puncture needle handle (11) is provided with a chuck (13), and the puncture needle core holding part (5) includes a puncture needle core handle Handle (14), described puncture needle core hand-held handle (14) comprises plug (15) and block cap (16), and described block cap (16) is provided with limit piece (17), and described block cap (16), limit A limiting groove (18) is formed between the piece (17) and the plug (15), and the collar (10) is arranged on the cap (16). 4. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 1 or 2, characterized in that: the puncture needle extracting part (4) comprises a hollow triangular prism body of the puncture needle extracting part (19) and a hollow puncture needle body extracting part triangular truss head (20), the three sides of the puncture needle body extracting part triangular prism body (19) undergo a fillet transition, and the puncture needle core filling part (6 ) includes a solid puncture core filling part triangular prism body (21). 5. The single-handed puncture needle specially used for extracting superficial tissue according to claim 3, characterized in that: the puncture needle body extraction part (4) comprises a hollow puncture needle body extraction part triangular prism body (19 ) and a hollow puncture needle body extracting part triangular truss head (20), the three sides of the puncture needle body extracting part triangular prism body (19) undergo a fillet transition, and the puncture needle core filling part (6) includes The solid piercing core fills part of the triangular prism body (21). 6. The single-handed puncture needle specially used for extracting superficial tissue according to claim 4, characterized in that: the cross section of the triangular prism body (19) of the extraction part of the puncture needle body is an isosceles triangle, and the The side length of the isosceles triangle of the cross-section of the triangular prism body (19) of the puncture needle body extraction part is 0.6 mm to 0.9 mm, and the cross-section of the triangular prism body (21) of the puncture needle core filling part is an isosceles triangle, so The side length of the isosceles triangle of the cross-section of the triangular prism body (21) filling the puncture needle core is 0.4 to 0.7 mm. 7. The single-handed puncture needle specially used for extracting superficial tissue according to claim 5, characterized in that: the cross section of the triangular prism body (19) of the extraction part of the puncture needle body is an isosceles triangle, and the The side length of the isosceles triangle of the cross-section of the triangular prism body (19) of the puncture needle body extraction part is 0.6 mm to 0.9 mm, and the cross-section of the triangular prism body (21) of the puncture needle core filling part is an isosceles triangle, so The side length of the isosceles triangle of the cross-section of the triangular prism body (21) filling the puncture needle core is 0.4 to 0.7 mm. 8. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 1 or 2, characterized in that: the inner wall of the outer ring (10-1) is provided with an outer ring groove (10-1) 11), the outer wall of the inner ring (10-2) is provided with an inner ring groove (10-21), and the outer ring groove (10-11) is arranged opposite to the inner ring groove (10-21) , the extension spring (10-4) is located on the outer ring groove (10-11) and the inner ring groove (10-21). 9. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 3, characterized in that: the inner wall of the outer ring (10-1) is provided with an outer ring groove (10-11) , the outer wall of the inner ring (10-2) is provided with an inner ring groove (10-21), and the outer ring groove (10-11) is arranged opposite to the inner ring groove (10-21), so The stretch spring (10-4) is located on the outer ring groove (10-11) and the inner ring groove (10-21). 10. The puncture needle dedicated to extracting superficial tissue with one hand according to claim 7, characterized in that: the inner wall of the outer ring (10-1) is provided with an outer ring groove (10-11) , the outer wall of the inner ring (10-2) is provided with an inner ring groove (10-21), and the outer ring groove (10-11) is arranged opposite to the inner ring groove (10-21), so The stretch spring (10-4) is located on the outer ring groove (10-11) and the inner ring groove (10-21).