CN217162306U

CN217162306U - Pulmonary nodule puncture positioning needle

Info

Publication number: CN217162306U
Application number: CN202123283263.2U
Authority: CN
Inventors: 赫捷; 徐宏; 胡艳艳; 尤玲丽; 肖创业
Original assignee: Hangzhou Kunbo Biotechnology Co Ltd
Current assignee: Hangzhou Kunbo Biotechnology Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-08-12
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to the technical field of medical equipment, a pulmonary nodule puncture positioning needle is disclosed. The utility model discloses a pulmonary nodule puncture pilot pin, include: pjncture needle and location mark subassembly, the near-end of pjncture needle is equipped with handle portion, and the location mark subassembly includes: the self-expansion positioning piece is arranged at the far end of the puncture needle in a sliding mode, the inner tube penetrates through a channel of the puncture needle in a sliding mode, and the inner tube is used for pushing the self-expansion positioning piece out of the puncture needle. The utility model discloses a pulmonary nodule puncture positioning needle, under the guide of CT machine, the puncture needle inserts the target position department of patient's focus, and the inner tube is with self-expanding positioning piece release pjncture needle, and self-expanding positioning piece inflation is lantern type locating support, forms the resistance with patient's lung tissue, fixes a position at patient's pulmonary nodule department, effective location marker; and the support structure of the self-expansion positioning piece is beneficial to positioning by touching with hands of a doctor in an operation, so that the position of excision can be more accurately operated.

Description

Pulmonary nodule puncture positioning needle

Technical Field

The embodiment of the utility model provides a relate to medical instrument technical field, concretely relates to pulmonary nodule puncture positioning needle.

Background

With the continuous progress of image detection technology in recent years, especially the popularization of high-resolution CT machines, the detection rate of small nodules in the lung of a human body is increased year by year.

At present, for pulmonary nodules with the size larger than 1cm, doctors can determine the position of the pulmonary nodules by visual observation and a positioning method of finger palpation; however, when the size of the pulmonary nodules is less than 1cm, the failure rate of the localization method by visual observation and digital palpation is greatly increased, and there is a risk of over-extension during surgical resection, increasing patient trauma.

Therefore, how to accurately locate pulmonary nodules before surgery is a problem for every thoracic surgeon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pulmonary nodule puncture pilot pin to solve the problem in the above-mentioned background art.

The embodiment of the utility model provides a pulmonary nodule puncture positioning needle, include: a puncture needle and a positioning mark assembly;

the puncture needle is provided with a through channel, and the near end of the puncture needle is provided with a handle part;

the positioning mark assembly includes: an inner tube and a self-expanding locating member;

self-expansion positioning element slidable sets up the distal end of pjncture needle, inner tube slidable wears to establish in the passageway of pjncture needle, and stretches out handle portion, the inner tube be used for with self-expansion positioning element releases the pjncture needle, self-expansion positioning element is releasing be lantern type's locating support during the pjncture needle.

According to the above technical scheme, the utility model discloses a pulmonary nodule puncture pilot pin, through setting up pjncture needle and location mark subassembly, the pjncture needle is equipped with the passageway that runs through, and the location mark subassembly includes: the self-expansion positioning piece is arranged at the far end of the puncture needle in a sliding manner, and the inner tube is arranged in a channel of the puncture needle in a penetrating manner in a sliding manner and extends out of the handle part of the puncture needle. The utility model discloses a pulmonary nodule puncture pilot pin, the position of pulmonary nodule is confirmed to the CT machine, and under the guide of CT machine, the target location department of patient's focus is inserted to the puncture needle, promotes the inner tube, and the inner tube will be from the needle point (release pjncture needle) that the pjncture needle was released to the inflation setting element, and the self-inflation setting element takes place from the inflation after releasing the pjncture needle, and expands into lantern type's locating support. When the self-expansion positioning piece is in an expansion state, resistance is formed between the self-expansion positioning piece and lung tissues of a patient, the self-expansion positioning piece is positioned at a pulmonary nodule of the patient, and a marker is effectively positioned; and the support structure of the self-expansion positioning piece is beneficial to positioning by touching with hands of a doctor in an operation, so that the position of excision can be more accurately operated.

In one possible solution, the self-expanding positioning element comprises: a fixing part and an expansion part;

the fixing parts are located at two ends of the expansion part, and the fixing parts and the expansion part are of an integrated structure and are made of nickel-titanium metal tubes through laser cutting. By adopting the structure, the processing and forming of the self-expansion positioning piece are convenient.

In one possible embodiment, the positioning mark assembly further includes: riveting a tube and a positioning pin;

the riveting tube is inserted in the self-expansion positioning piece;

the locating needles are made of nickel-titanium alloy and are arranged in a plurality of numbers, the locating needles are arranged on the riveting tubes, and the locating needles are in a J shape which is bent outwards when the puncture needle is pushed out. By adopting the structure, the fixing effect of the self-expansion positioning piece is improved.

In one possible solution, the number of the positioning needles is three;

the three positioning pins are arranged on the riveting pipe at intervals of 120 degrees. By adopting the structure, the self-expansion positioning piece is more stably fixed and can not displace.

In one possible embodiment, the positioning mark assembly further includes: positioning a line;

the positioning line is a flexible developing line, is arranged on the riveting tube and extends into the self-expansion positioning piece, and is used for indicating the positions of the self-expansion positioning piece and the positioning needle. By adopting the structure, the positions of the self-expansion positioning piece and the positioning needle can be conveniently displayed.

In one possible solution, the positioning line is provided with a mark ribbon, and the positioning line is provided with a developing ring at the mark ribbon. By adopting the structure, the insertion depth of the self-expansion positioning piece and the positioning needle can be displayed.

In one possible embodiment, the positioning mark assembly further includes: a positioning pin;

the positioning needles are made of nickel-titanium alloy and are provided with a plurality of positioning needles, the plurality of positioning needles are arranged on the outer surface of the expansion part, and the positioning needles are in a J shape which is bent outwards when the puncture needle is pushed out. By adopting the structure, the fixing effect of the self-expansion positioning piece is improved.

In one possible embodiment, the method further comprises: connecting the card holder;

a fixing block is arranged at the near end of the inner pipe;

the handle part is provided with a protruding column, and protruding blocks are arranged on two sides of the protruding column;

the connecting clamping seat is provided with a first accommodating groove and a second accommodating groove which are mutually communicated, and a limiting clamping groove is formed in the first accommodating groove of the connecting clamping seat;

the first accommodating groove and the second accommodating groove are respectively used for embedding the protruding column and the fixing block, and the limiting clamping groove is used for inserting the protruding block. By adopting the structure, the insertion of the puncture needle is convenient.

In a possible scheme, the fixed block is provided with a guide post and a guide block;

the guide post is used for inserting the protruding post;

the handle part is provided with a guide groove, and the guide groove is used for inserting the guide block.

In one possible embodiment, the outer wall of the puncture needle is provided with graduation marks. With this structure, the insertion depth of the puncture needle can be displayed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of a lung nodule puncturing and positioning needle according to a first embodiment of the present invention;

fig. 2 is an enlarged view of the proximal end of fig. 1 according to a first embodiment of the present invention;

fig. 3 is a partially enlarged view of the proximal end of fig. 1 according to a first embodiment of the present invention;

fig. 4 is a schematic view of the self-expandable positioning element according to the first embodiment of the present invention when expanded;

fig. 5 is an enlarged view of the distal end of fig. 4 according to a first embodiment of the present invention;

fig. 6 is an enlarged view of the proximal end of fig. 4 according to a first embodiment of the present invention;

fig. 7 is a schematic view illustrating a contracted state of a self-expandable positioning element according to a first embodiment of the present invention;

fig. 8 is a schematic view illustrating an expanded state of a self-expandable positioning element according to a first embodiment of the present invention;

fig. 9 is a schematic view of an expanded state of the self-expandable positioning element according to the second embodiment of the present invention.

Reference numbers in the figures:

1. puncturing needle; 101. scale marks are marked; 11. a handle portion; 111. a projecting post; 112. a protruding block; 113. a guide groove; 2. a positioning mark assembly; 21. an inner tube; 211. a fixed block; 2111. a guide post; 2112. a guide block; 22. a self-expanding positioning element; 221. an expansion part; 222. a fixed part; 23. riveting a pipe; 24. a positioning pin; 24', a positioning needle; 25. positioning a line; 251. marking a color band; 3. connecting the card holder; 31. a first accommodating groove; 32. a second accommodating groove; 33. limiting clamping grooves.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

As described in the background of the present application, currently, for pulmonary nodules greater than 1cm in size, a physician can determine the location of the pulmonary nodule by visual observation and finger palpation, but when the size of the pulmonary nodule is less than 1cm, the failure rate of the localization by visual observation and finger palpation is greatly increased, and there is an excessive scope at the time of surgical resection, increasing the risk of trauma to the patient. The current common preoperative localization methods for pulmonary nodules include: CT guide metal hook positioning, injection methylene blue staining positioning, intraoperative ultrasonic examination positioning and the like.

The inventors of the present application have found that the above methods all have some disadvantages: the methylene blue injection positioning is only suitable for superficial knot positioning, and large-area dyeing can be caused by the change of injection dosage and time to cause positioning failure; the ultrasonic wave in the operation has advantages to the nodes which can not be touched, but requires repeated confirmation of the focus position in the operation, the operation is complex and time-consuming, and the requirements on operators and equipment are high; the metal hook has high positioning success rate and few complications, but because the steel wire is retained in the chest wall after positioning, a patient needs to perform an operation immediately after positioning, and the tail end of the metal hook is only provided with one barb and is easy to shift and fall off. Therefore, how to accurately locate pulmonary nodules before surgery is a problem for every thoracic surgeon.

In order to solve the above problems, the inventor of the present application proposes a technical solution of the present application, and specific embodiments are as follows:

fig. 1 is the utility model discloses a lung nodule puncture pilot pin's in the embodiment one schematic diagram, fig. 2 is the utility model discloses the near-end enlarger in fig. 1 in the embodiment one, fig. 3 is the utility model discloses the local enlarger of near-end in fig. 1 in the embodiment one, fig. 4 is the utility model provides a schematic diagram during from inflation setting element inflation in the embodiment one, fig. 5 is the utility model provides a distal end enlarger in fig. 4 in the embodiment one, fig. 6 is the utility model provides a near-end enlarger in fig. 4 in the embodiment one, fig. 7 is the utility model discloses the contraction state schematic diagram of self-inflation setting element in the embodiment one, fig. 8 is the expansion state schematic diagram of self-inflation setting element in the embodiment one.

As shown in fig. 1 to 8, the pulmonary nodule puncturing and positioning needle of the present embodiment includes: a puncture needle 1 and a positioning marker assembly 2.

The puncture needle 1 is provided with a through channel along the axial direction, the near end of the puncture needle 1 is provided with a handle part 11, and the far end of the puncture needle 1 is provided with a needle tip part which is an inclined plane.

The positioning marker assembly 2 includes: an inner tube 21 and a self-expanding spacer 22.

The self-expansion positioning element 22 is slidably arranged in the channel of the puncture needle 1 and is positioned at the far end close to the needle point of the puncture needle 1, the inner tube 21 is slidably arranged in the puncture needle 1, and the near end of the inner tube 21 extends out of the handle part 11 of the puncture needle 1. The inner tube 21 is pushed, the inner tube 21 abuts against the self-expansion positioning piece 22 in the puncture needle 1, then the self-expansion positioning piece 22 is pushed out of the puncture needle 1, and after the puncture needle 1 is pushed out of the self-expansion positioning piece 22, self-expansion occurs, and the self-expansion positioning piece is expanded into a lantern-shaped positioning bracket.

In this embodiment, the self-expandable positioning element inserted into the puncture needle is in a contracted state. When the self-expansion positioning piece is used, under the guidance of a CT machine, the puncture needle is inserted into a target position of a focus of a patient, the inner tube is pushed, the self-expansion positioning piece is pushed out of a needle point (push-out puncture needle) of the puncture needle by the inner tube, the self-expansion positioning piece is self-expanded after the puncture needle is pushed out, and is expanded into a lantern-shaped positioning support, and the lantern-shaped positioning support is fixed in lung tissues of the patient to effectively fix a marker.

Through the content difficult discovery, the pulmonary nodule puncture pilot pin of this embodiment, through setting up pjncture needle and location mark subassembly, the pjncture needle is equipped with the passageway that runs through, and the location mark subassembly includes: the self-expansion positioning piece is arranged at the far end of the puncture needle in a sliding manner, and the inner tube is arranged in a channel of the puncture needle in a penetrating manner in a sliding manner and extends out of the handle part of the puncture needle. According to the lung nodule puncture positioning needle, the position of a lung nodule is determined through a CT machine, under the guidance of the CT machine, the puncture needle is inserted into a target position of a focus of a patient, an inner tube is pushed, the self-expansion positioning piece is pushed out of a needle point (push-out puncture needle) of the puncture needle by the inner tube, and after the puncture needle is pushed out by the self-expansion positioning piece, the self-expansion positioning piece is self-expanded and expanded into a lantern-shaped positioning support. When the self-expansion positioning piece is in an expansion state, resistance is formed between the self-expansion positioning piece and lung tissues of a patient, the self-expansion positioning piece is positioned at a pulmonary nodule of the patient, and a marker is effectively positioned; and the support structure of the self-expansion positioning piece is beneficial to positioning by touching with hands of a doctor in an operation, so that the position of excision can be more accurately operated.

Alternatively, as shown in fig. 5, 7 and 8, the lung nodule puncturing positioning needle in the present embodiment includes: a fixing portion 222 and an expansion portion 221.

The fixing portions 222 are located at two ends of the expansion portion 221, and the fixing portions 222 and the expansion portion 221 of the self-expansion positioning member 22 are of an integrated structure and are formed by machining a nickel-titanium metal tube in a laser cutting mode.

In this embodiment, the middle of the nitinol tube is cut along the axial direction, the circumferential sidewall of the nitinol tube is cut into a plurality of expansion portions 221, and fixing portions 222 are formed at both ends of the nitinol tube. And (3) shaping the cut nickel-titanium metal tube, wherein the shaped nickel-titanium metal tube (self-expansion positioning piece) is a lantern-shaped positioning support in an expansion state.

Further, in the lung nodule puncturing positioning needle of the present embodiment, the positioning mark assembly 2 further includes: a rivet tube 23 and a pilot pin 24.

The rivet tube 23 is inserted into the fixing portion 222 at the proximal end of the self-expandable positioning member 22, and the rivet tube 23 is fixedly connected to the fixing portion 222.

The positioning needle 24 is made of nickel-titanium alloy, and the positioning needle 24 is a nickel-titanium wire or a nickel-titanium tube which is subjected to pre-shaping treatment. The plurality of positioning pins 24 are provided, the proximal ends of the plurality of positioning pins 24 are fixedly arranged on the riveting tube 23 and are positioned at one side of the proximal end of the self-expanding positioning piece 22, and the length of the positioning pins 24 is smaller than that of the self-expanding positioning piece 22.

In this embodiment, before the pjncture needle is being released from the inflation setting element, many pilot needles shrink in the inside from the inflation setting element, after the needle point of the pjncture needle is being released from inflation setting element and pilot needle, expand earlier from the inflation setting element, form lantern type locating support, then, many pilot needles inflation is outside the expansion, and the top of pilot needle is crooked to the rear side, the pilot needle is the J type overhead kick, firm fixing is on patient's pulmonary nodule, from inflation setting element and the dual anchoring of pilot needle, prevent from the displacement of inflation setting element.

Further, in the lung nodule puncturing positioning needle in the embodiment, the number of the positioning needles 24 is three.

One end of each of the three positioning needles 24 is fixed on the riveting tube 23, and when the positioning needles 24 expand, the included angle between every two adjacent positioning needles is 120 degrees, so that the self-expansion positioning piece is more stable in the body of a patient.

Further, in the lung nodule puncturing positioning needle of the present embodiment, the positioning mark assembly 2 further includes: the wire 25 is positioned.

The positioning line 25 is a flexible developing line, the far end of the positioning line 25 is arranged in the riveting tube 23 in a penetrating way and extends into the self-expansion positioning piece 22, and the positioning line 25 is clamped among the three positioning needles 24 and is connected to the tail end of the positioning needle 24.

In this embodiment, the position of the self-expandable positioning element and the positioning needle in the patient body can be indicated by the visualization of the positioning line 25, which is more convenient for the subsequent operation.

Further, in the lung nodule puncturing positioning needle of the present embodiment, the circumferential side wall of the positioning line 25 is provided with a marking color tape 251, and the positioning line 25 is provided with a developing ring (not shown) at the marking color tape 251. The depth of penetration of the self-expanding site 22 and the locator pin 24 into the patient's tissue is obtained by the marking color 251 on the locator wire 25; and the marking ribbon 251 can be developed under CT, so that the position of the positioning line can be conveniently determined, and the problems of 'hidden line' and 'floating line' are avoided.

Further, as shown in fig. 2, 3 and 6, the pulmonary nodule puncturing positioning needle in the present embodiment further includes: is connected with the card holder 3.

The proximal end of the inner tube 21 is provided with a square fixing block 211, which is convenient for pushing and pulling the inner tube 21.

The proximal end of the handle portion 11 of the puncture needle 1 is provided with a projecting column 111, and the puncture needle 1 is provided with projecting blocks 112 at both side walls of the projecting column 111.

The connection card holder 3 is provided with a first receiving groove 31 and a second receiving groove 32, the first receiving groove 31 and the second receiving groove 32 are communicated with each other, and a limiting clamping groove 33 is arranged on the inner wall of the first receiving groove 31 of the connection card holder 3.

In this embodiment, before the puncture needle is inserted, the protrusion 111 of the handle portion and the fixing block 211 at the end of the inner tube are respectively embedded into the first receiving groove 31 and the second receiving groove 32 of the connection clip base 3, and the protrusion 112 on the protrusion 111 is inserted into the limiting slot 33 of the connection clip base 3, so that the fixing block 211 and the handle portion 11 are relatively locked, and at this time, the self-expansion positioning element is hidden in the puncture needle, and the self-expansion positioning element cannot be pushed out by the inner tube in the process of inserting the puncture needle into the body of the patient.

Further, in the pulmonary nodule puncturing positioning needle of the present embodiment, a guide post 2111 is disposed on the inner side of the fixing block 211, and a guide block 2112 is disposed on the side wall of the fixing block 211.

The handle portion 11 of the puncture needle 1 is provided with a guide groove 113.

When the fixing block 211 and the inner tube 21 are pushed, the guide post 2111 of the fixing block 211 is inserted into the passage of the protrusion post 111, and the guide block 2112 is inserted into the guide groove 113 of the handle portion 11.

Further, as shown in fig. 1 and 4, in the lung nodule puncturing positioning needle of the present embodiment, the outer wall of the puncturing needle 1 is provided with scale marks 101. The graduated markings 101 are used to indicate the depth of insertion of the needle into the patient as the needle is delivered from the inflatable site.

Fig. 9 is a schematic view of an expanded state of the self-expandable positioning element according to the second embodiment of the present invention. The second embodiment is an alternative scheme of the first embodiment.

As shown in fig. 9, the pulmonary nodule puncturing positioning needle in the present embodiment, the positioning mark assembly further includes: the positioning pin 24'.

The positioning needles 24' are made of nickel-titanium alloy and are provided with a plurality of positioning needles. A plurality of positioning pins 24' are provided on the outer surface of the expanded portion of the self-expanding positioning element. When the self-expansion positioning piece is pushed out of the puncture needle, the positioning needle 24' expands outwards to form a J-shaped barb structure, so that the self-expansion positioning piece (positioning bracket) is prevented from displacing in vivo.

The utility model discloses a pulmonary nodule puncture pilot pin, application method is:

s1, the position of the pulmonary nodule of the patient is determined by CT, and then the puncture needle is sent to the target position under the guidance of CT.

And S2, taking down the connecting clamping seat, pushing the inner tube to the bottom, and pushing out the self-expansion positioning piece to release the self-expansion positioning piece from the puncture needle.

S3, the inner tube is completely pulled out, the puncture needle is withdrawn to enable the needle point to be positioned between the outer wall of the thoracic cavity and the lung, then the inner tube is inserted into the puncture needle, and the positioning wire is completely pushed out.

And S4, finally, the puncture needle and the inner tube are pulled out together for subsequent operation.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A pulmonary nodule puncturing and positioning needle, comprising: a puncture needle and a positioning mark assembly;

2. The pulmonary nodule puncturing positioning needle of claim 1, wherein the self-expanding positioning member comprises: a fixing part and an expansion part;

the fixing parts are located at two ends of the expansion part, and the fixing parts and the expansion part are of an integrated structure and are made of nickel-titanium metal tubes through laser cutting.

3. The pulmonary nodule puncturing positioning needle of claim 2, wherein the positioning marker assembly further comprises: riveting a tube and a positioning pin;

the riveting pipe is inserted in the self-expansion positioning piece;

the locating needles are made of nickel-titanium alloy and are provided with a plurality of locating needles, the locating needles are arranged on the riveting tube, and the locating needles are in a J shape which is bent outwards when the puncture needle is pushed out.

4. The pulmonary nodule puncturing locator needle of claim 3, wherein the number of locator needles is three;

the three positioning pins are arranged on the riveting pipe at intervals of 120 degrees.

5. The pulmonary nodule puncturing positioning needle of claim 4, wherein the positioning marker assembly further comprises: positioning a line;

the positioning line is a flexible developing line, is arranged on the riveting tube and extends into the self-expansion positioning piece, and is used for indicating the positions of the self-expansion positioning piece and the positioning needle.

6. The pulmonary nodule puncture positioning needle as claimed in claim 5, wherein the positioning line is provided with a marking color band, and the positioning line is provided with a developing ring at the marking color band.

7. The pulmonary nodule puncturing positioning needle of claim 2, wherein the positioning marker assembly further comprises: a positioning pin;

the positioning needles are made of nickel-titanium alloy and are provided with a plurality of positioning needles, the plurality of positioning needles are arranged on the outer surface of the expansion part, and the positioning needles are in a J shape which is bent outwards when the puncture needle is pushed out.

8. The pulmonary nodule puncturing positioning needle of claim 1, further comprising: connecting the card holder;

a fixing block is arranged at the near end of the inner pipe;

the first accommodating groove and the second accommodating groove are respectively used for embedding the protruding column and the fixing block, and the limiting clamping groove is used for inserting the protruding block.

9. The pulmonary nodule puncturing and positioning needle of claim 8, wherein the fixed block is provided with a guide post and a guide block;

the guide post is used for inserting the protruding post;

10. The pulmonary nodule puncturing and positioning needle of any one of claims 1 to 9, wherein the outer wall of the puncture needle is provided with scale markings.