CN209499781U - A kind of tumor puncture needle - Google Patents

Abstract

The utility model provides a kind of tumor puncture needle, it is characterized by comprising syringe, needle body and interior needles, one end of the syringe is fixedly connected with the needle body, the interior needle is set to the inside of the needle body, push rod is equipped with inside the syringe, the push rod is equipped with push/pull slot along its length, and the interior needle is connect with the push rod by push/pull slot, the push rod includes push rod cup, pusher body and pulling plate, and the both ends of the pusher body are fixedly connected with the push rod cup and pulling plate respectively.The utility model provides a kind of tumor puncture needle, pass through needle in being arranged inside needle body, when making doctor that needle body is pierced into acquisition tissue in tumour, negative pressure absorbing tissue directly is provided with syringe, reaches required amount, needle in pushing, interior needle is contacted with acquisition portion, cuts off tissue and the organized connection of original of acquisition, and will not be leaked out when the withdraw of the needle without the tissue for keeping original negative pressure to acquire, simply, conveniently, difficulty is low for acquisition.

Description

A kind of tumor puncture needle

Technical field

The utility model relates to medical instruments fields, specifically, being to be related to a kind of tumor puncture needle.

Background technique

Aspiration biopsy is the main method that Bone and soft tissue tumors obtain histopathogenic diagnosis.With detection methods and method Continuous improvement, the accuracy of diagnosis is gradually increased, but still has a big chunk tumour not have typical Imaging Features, Difficult diagnosis.Correctly diagnosis needs clinical, image and pathology three to combine.Wherein, pathological diagnosis plays the selection of therapeutic scheme Key effect.Aspiration biopsy is to obtain the main path of pathological diagnosis.Taking for tumor tissues needs to be pierced into about 1cm in tumour Depths can extract needle core, connect the syringe of 20-50ml, firmly suction materials.Drawing-in type is continued with larger pumping when drawing materials Tumor tissue is sucked the negative pressure of suction, so this negative-pressure sucking is kept in the withdraw of the needle, until exiting tumour.The prior art The tissue and tumor tissues acquired can not be cut after having aspirated, and to be always maintained at the negative pressure of suction when the withdraw of the needle, to guarantee The tissue of acquisition will not slide again, and operation difficulty is high.

Utility model content

The purpose of the utility model is to overcome the shortcoming of above-mentioned traditional technology, provide that a kind of acquisition is convenient, difficulty It is low, the tissue acquired and tumor tissues can be separated, and the tumour of negative pressure when in the withdraw of the needle without being always maintained at suction is worn Pricker.

The purpose of this utility model is reached by following technical measures: a kind of tumor puncture needle, it is characterised in that: Including syringe, needle body and interior needle, one end of the syringe is fixedly connected with the needle body, and the interior needle is set to the interior of the needle body Portion, the syringe inside are equipped with push rod, and the push rod is equipped with push/pull slot along its length, and the interior needle is with the push rod by pushing away Kerve connection, the push rod includes push rod cup, pusher body and pulling plate, the both ends of the pusher body respectively with the push rod cup and drawing Plate is fixedly connected, and the push rod cup is embedded in inside the syringe, and the needle body is equipped with acquisition portion far from the syringe side, described Acquisition portion is funnel-form, and the collecting part is the side great Kou and osculum side, and the side great Kou is fixedly connected with the needle body, described Interior needle includes interior needle body and push-and-pull head, and the push-and-pull head is disposed far from the one end in the acquisition portion, and the interior needle body is solid knot Structure, the diameter of the interior needle body are less than the diameter of the acquisition portion side great Kou, and the diameter of the interior needle body is greater than the acquisition portion The diameter of osculum side, the syringe outside are equipped with first-hand finger ring and second-hand's finger ring, the first-hand finger ring and second finger Ring is oppositely arranged.

Interior needle body can be slided by push/pull slot along push rod, and the diameter of interior needle body is less than the straight of the acquisition portion side great Kou Diameter, the diameter of the interior needle body are greater than the diameter of the acquisition portion osculum side, within needle body can be close to the one end in acquisition portion It is contacted in acquisition portion with acquisition portion, when needing to aspirate tumor tissues, interior needle body is pulled open far from acquisition portion, push rod, syringe are pulled Interior formation negative pressure absorbing tumor tissues, acquisition, which is finished, pushes back acquisition portion for interior needle, and interior needle can not only separate the tissue acquired, but also Guarantee that the tissue acquired when the withdraw of the needle does not have to skid off by vacuum suction.

As a preferred embodiment, the push-and-pull head is equipped with skid resistance strip, increasing friction force when push-and-pull.

As a preferred embodiment, the push rod cup is enclosed with dark colour elastic seal ring, both ensure that push rod cup with The leakproofness of syringe, and facilitate the amount of the tissue through syringe observation acquisition.

As a preferred embodiment, the osculum side in the acquisition portion is to be obliquely installed, and facilitates the piercing of needle body.

As a preferred embodiment, the syringe is transparent setting, and has scale, and the scale is along the syringe length Direction setting, can intuitively read the amount of the tissue of acquisition very much.

By adopting the above-described technical solution, compared with prior art, the utility model has the advantages that: the utility model mentions A kind of tumor puncture needle is supplied, by needle in being arranged inside needle body, when making doctor that needle body is pierced into acquisition tissue in tumour, directly It connects and provides negative pressure absorbing tissue with syringe, reach required amount, push interior needle, interior needle is contacted with acquisition portion, cuts off the group of acquisition Knit with former organized connection, and will not be leaked out when the withdraw of the needle without the tissue for keeping original negative pressure to acquire, acquisition is simple, Convenient, difficulty is low.

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Detailed description of the invention

Attached drawing 1 is a kind of overall structure diagram of tumor puncture needle of the utility model.

Attached drawing 2 is a kind of push rod the schematic diagram of the section structure of tumor puncture needle of the utility model.

Attached drawing 3 is a kind of acquisition portion structural schematic diagram of tumor puncture needle of the utility model.

Attached drawing 4 is that a kind of A of tumor puncture needle of the utility model goes out the schematic diagram of the section structure.

Specific embodiment

Embodiment: as shown in attached drawing 1-4, a kind of tumor puncture needle, it is characterised in that: including syringe 1, needle body 2 and interior needle 3, one end of the syringe 1 is fixedly connected with the needle body 2, and the interior needle 3 is in the inside of the needle body 2, the syringe 1 Portion is equipped with push rod 4, and the push rod 4 is equipped with push/pull slot 41 along its length, and the interior needle 3 passes through push/pull slot 41 with the push rod 4 Connection, the push rod 4 include push rod cup 42, pusher body 43 and pulling plate 44, the both ends of the pusher body 43 respectively with the push rod First 42 are fixedly connected with pulling plate 44, and the push rod cup 42 is embedded in inside the syringe 1, and the needle body 2 is far from the syringe 1 One end is equipped with acquisition portion 5, and the acquisition portion 5 is funnel-form, and the acquisition portion 5 divides for the side great Kou 51 and osculum side 52, described big Mouth side 51 is fixedly connected with the needle body 2, and the interior needle 3 includes interior needle body 31 and push-and-pull head 32, and the push-and-pull head 32 is set to far One end from the acquisition portion 5, the interior needle body 1 are solid construction, and it is big that the diameter of the interior needle body 31 is less than the acquisition portion The diameter of mouth side 51, the diameter of the interior needle body 31 are greater than the diameter of the acquisition portion osculum side 52, are equipped on the outside of the syringe 1 First-hand finger ring 6 and second-hand's finger ring 7, the first-hand finger ring 6 and second-hand's finger ring 7 are oppositely arranged.

First-hand finger ring 6 and second-hand's finger ring 7 can be sliding along push rod 4 by push/pull slot 41 for placing finger, interior needle body 31 It is dynamic, and the diameter of interior needle body 31 is less than the diameter of the acquisition portion side great Kou, the diameter of the interior needle body is greater than the acquisition portion The diameter of osculum side, within needle body 31 can be contacted in acquisition portion with acquisition portion close to the one end in acquisition portion 5, need to aspirate swollen When tumor tissue, interior needle body 31 is pulled open far from acquisition portion 5, push rod 4 is pulled, forms negative pressure absorbing tumor tissues, acquisition in syringe 1 It finishes and interior needle 3 is pushed back into acquisition portion 5, interior needle 3 can not only separate the tissue acquired, but also guarantee the tissue acquired when the withdraw of the needle not It will not be skidded off with by vacuum suction.

The push-and-pull head 32 is equipped with skid resistance strip, and push-and-pull head 32 is used to control the push-and-pull campaign of interior needle 3, and skid resistance strip can increase Frictional force when big push-and-pull.The push rod cup 42 is enclosed with dark colour elastic seal ring 8, both ensure that push rod cup 42 and syringe 1 leakproofness, and facilitate the amount of the tissue through the observation acquisition of syringe 1.The osculum side 52 in the acquisition portion is to be obliquely installed, side Just the piercing of needle body 2.The syringe 1 has scale, and the scale is arranged along the syringe length direction, can intuitively read very much The amount of the tissue acquired out.

In use, doctor chooses entry point and carries out anesthesia, from the vertical inserting needle in the intact direction of skin, because of the osculum in acquisition portion Side 52 is to be obliquely installed, relatively good into can first be pierced with stylet when such as the thicker and tough and tensile position inserting needle of skin under normal circumstances Broken skin skin is pierced into needle body 2.The depths about 1cm in being pierced into tumor tissues can start to acquire tissue, specifically, pulling push-and-pull head 32, push-and-pull head 32 drives interior needle body 31 to slide in and out along push/pull slot 41, since the diameter of interior needle body 31 is big less than the acquisition portion The diameter of mouth side 51, the diameter of the interior needle body are greater than the diameter of the acquisition portion osculum side 52, needle body 31 and acquisition within institute Portion 5 pulls pulling plate 44 by original contact condition to discrete state at this time, pulling plate 44 by pusher body 43 drive push rod cup 42 to External movement, push rod cup 42 are enclosed with elastic seal ring 8, and elastic seal ring 8 ensure that the sealing between push rod cup 42 and syringe 1 Property, make to generate negative pressure inside syringe 1, drawing tumor tissues enters syringe 1, and syringe is equipped with scale along its length, and elasticity is close Seal 8 is dark color, therefore can intuitively read very much the amount of the tumor tissues of absorption, after the amount for reaching demand, pushes push-and-pull head 32, interior 3 body of needle return to 5 contact condition of acquisition portion, the tissue of absorption and original tumor tissues are cut, the direct withdraw of the needle is Can, when the withdraw of the needle, since interior needle separates the tissue of absorption with outside, negative pressure tissue when without being always maintained at absorption will not leak Out, simply, conveniently, difficulty is low for acquisition.

Claims (3)

1. a kind of tumor puncture needle, it is characterised in that: including syringe, needle body and interior needle, one end of the syringe and the needle body It is fixedly connected, the interior needle is set to the inside of the needle body, is equipped with push rod inside the syringe, the push rod is set along its length There is push/pull slot, the interior needle is connect with the push rod by push/pull slot, and the push rod includes push rod cup, pusher body and pulling plate, institute The both ends for stating pusher body are fixedly connected with the push rod cup and pulling plate respectively, and the push rod cup is embedded in inside the syringe, institute It states needle body and is equipped with acquisition portion far from the syringe side, the acquisition portion is funnel-form, and the collecting part is the side great Kou and osculum Side, the side great Kou are fixedly connected with the needle body, and the interior needle includes interior needle body and push-and-pull head, and the push-and-pull head is disposed far from The one end in the acquisition portion, the interior needle body are solid construction, and the diameter of the interior needle body is less than the acquisition portion side great Kou Diameter, the diameter of the interior needle body are greater than the diameter of the acquisition portion osculum side, be equipped on the outside of the syringe first-hand finger ring and Second-hand's finger ring, the first-hand finger ring and second-hand's finger ring are oppositely arranged；

The push rod cup is enclosed with dark colour elastic seal ring；

The osculum side in the acquisition portion is to be obliquely installed.

2. a kind of tumor puncture needle according to claim 1, it is characterised in that: the push-and-pull head is equipped with skid resistance strip.

3. a kind of tumor puncture needle according to claim 1 or 2, it is characterised in that: the syringe is transparent setting, and band There is scale, the scale is arranged along the syringe length direction.