CN114259308B - Pulmonary nodule positioning puncture needle - Google Patents
Pulmonary nodule positioning puncture needle Download PDFInfo
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- CN114259308B CN114259308B CN202210100398.0A CN202210100398A CN114259308B CN 114259308 B CN114259308 B CN 114259308B CN 202210100398 A CN202210100398 A CN 202210100398A CN 114259308 B CN114259308 B CN 114259308B
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- 230000002685 pulmonary effect Effects 0.000 title claims abstract description 28
- 206010056342 Pulmonary mass Diseases 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 7
- 210000003437 trachea Anatomy 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 210000003934 vacuole Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 210000004072 lung Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 210000000038 chest Anatomy 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 201000003144 pneumothorax Diseases 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004879 pulmonary tissue Anatomy 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention relates to a medical instrument and discloses a lung nodule positioning puncture needle which comprises a trocar (1), wherein a positioning needle (2) is arranged in the trocar (1), the end part of the positioning needle (2) extends out of the trocar (1) to form a puncture tip (201), the positioning needle (2) comprises a hollow tube body (202) and a positioning block (203) arranged in the tube body (202), the positioning block (203) is arranged at the end part, close to the puncture tip (201), of the tube body (202), and an air flow channel (204) communicated with the interior of the tube body (202) and a positioning needle body (205) capable of extending out of the tube body (202) from the side wall of the tube body (202) or completely retracting into the interior of the positioning block (203) under the action of air pressure are arranged in the positioning block (203). The invention not only can accurately position the pulmonary nodule, but also can release the positioning according to the actual requirement after grabbing and positioning the pulmonary nodule, can be suitable for special conditions of wrong puncture position, temporary non-reception of operation of a patient and the like, and is more flexible to use.
Description
Technical Field
The invention relates to a medical instrument, in particular to a pulmonary nodule positioning puncture needle.
Background
At present, with the improvement of health physical examination consciousness of citizens and the updating of CT equipment, clinical stages of newly discovered lung cancer patients in clinic are advanced day by day, lung nodules with the diameter of about 1cm and even smaller are more and more common in clinic, corresponding operation amount is increased year by year, and how to quickly and effectively find small nodules is urgently needed to be solved.
The effective method for treating pulmonary nodules in the prior art is to adopt a positioning puncture needle CT to guide positioning puncture, and the method is simple, effective and rapid. The structure of the existing positioning puncture needle generally comprises a trocar, wherein a positioning guide wire is arranged in the trocar, when a pulmonary nodule is positioned, the trocar is punctured into a lung according to CT scanning positioning, after the CT scanning is repeated, the trocar is shown to be positioned in the pulmonary nodule, the trocar is pulled out to enable the positioning guide wire to extend out of the trocar, namely, a hook at the end part of the positioning guide wire is released immediately to enable the trocar to be expanded and opened and positioned in the nodule or positioned in the pulmonary tissue around the nodule; in addition, the positioning puncture needle is difficult to pull out after the guide wire is expanded, and the operation cannot be stopped under special conditions such as puncture position error, temporary non-reception of the operation by a patient and the like, so that the use is not flexible enough, and the positioning puncture needle cannot be better suitable for special conditions.
Disclosure of Invention
The invention provides a lung nodule positioning puncture needle aiming at the defects of the positioning puncture needle in the prior art.
In order to solve the technical problem, the invention is solved by the following technical scheme:
pulmonary nodule location pjncture needle, including the trocar, be equipped with the pilot needle in the trocar, the tip of pilot needle stretches out the trocar and constitutes the puncture point end that is solid coniform, the pilot needle includes hollow body and sets up the locating piece in the body, the locating piece sets up in being close to the most advanced tip of puncture of body, be equipped with in the locating piece with the inside air current passageway of intercommunication of body with can stretch out the body or retract the inside location needle body of locating piece completely from the body lateral wall under the atmospheric pressure effect. The positioning needle body is driven to extend out or retract into the tube body in an air pressure mode, so that whether the positioning needle body is used for positioning lung nodules or not can be well flexibly controlled according to actual needs, and the device is flexibly suitable for different conditions.
As preferred, the locating piece is cylindricly, airflow channel's air inlet is located on the locating piece terminal surface and airflow channel's axial is the same with the locating piece axial, airflow channel is a plurality of and around locating piece axial evenly distributed in the edge of locating piece, be equipped with the slip passageway that corresponds a plurality of equidistant settings in the locating piece axial of following of intercommunication with every airflow channel in the locating piece, slip passageway one end and airflow channel intercommunication, the other end extends to the locating piece lateral wall through the locating piece axis on, be equipped with a plurality of pinholes with the coaxial setting of slip passageway and one-to-one on the pipe body lateral wall, the location needle body slides and sets up in slip passageway and can stretch out the pipe body through the pinhole.
The arrangement positions of the airflow channel and the sliding channel can provide enough movement travel for the positioning needle body, so that the positioning needle body can be ensured to have enough length to be inserted into the pulmonary nodule after extending out of the tube body, and the insertion stability of the positioning needle body on the pulmonary nodule is ensured.
Preferably, each air flow channel is correspondingly provided with two mutually parallel sliding channels, and the axes of the sliding channels and the axes of the air flow channels form an acute included angle.
The design of sliding channel can make the whole of all location needle bodies arrange and be the heliciform towards a plurality of directions, then can be better insert the fastness to the pulmonary nodule, effectively avoid the unhook condition among the operation process.
Preferably, the diameter of the needle hole is smaller than that of the sliding channel, the inner wall of the tube body at the needle hole forms a limiting step surface, and a limiting convex ring matched with the limiting step surface is arranged on the outer side wall of the positioning needle body. The cooperation of spacing bulge loop and spacing ladder face can avoid the location needle body to deviate from slide channel.
Preferably, the outer wall of the positioning block is provided with a convex strip, the inner wall of the pipe body is provided with a groove for clamping the convex strip, and the outer wall of the positioning block is in interference fit with the inner wall of the pipe body.
The cooperation of sand grip and recess, the interference fit between locating piece and the body homoenergetic is enough effectively to guarantee that the locating piece does not rotate in the body is inside, can guarantee then that the location needle body can correspond with corresponding pinhole all the time, guarantees that the location needle body can stretch out the body and fix a position.
Preferably, the tube body comprises a hose section, a hard tube section and a connecting tube section which are sequentially connected, the connecting tube section is connected with the puncture tip, the outer diameter of the connecting tube section is gradually increased from the hard tube to the puncture tip, the puncture tip is in a solid conical shape, the maximum diameter of the connecting tube section is equal to that of the puncture tip, an air passing gap with one end communicated with the outside of the trocar is formed between the inner wall of the trocar and the outer wall of the tube body, an air passing channel communicated with the other end of the air passing gap is arranged on the outer wall of the connecting tube section, an inclined plane capable of being tightly abutted against the outer wall of the connecting tube section is formed on the inner wall of the end part of the trocar, an annular concave shoulder is formed by the end face of the trocar and the outer wall of the connecting tube section close to the end part of the puncture tip, and the end part of the air passing channel far away from the air passing gap extends into the annular concave shoulder and is communicated with the outside of the trocar.
The structure setting of body can be convenient for on the one hand whole needle body insert, is convenient for simultaneously extracting of trocar, and on the other hand can also avoid the gaseous pneumothorax that gets into the thorax and lead to of lung.
Preferably, the end part, far away from the puncture tip, of the tube body is provided with an air tube connecting valve, the air tube connecting valve comprises a valve body which is internally provided with a cavity and connected to the end part of the tube body, one end of the valve body is provided with an air inlet, the other end of the valve body is provided with an air outlet communicated with the inside of the tube body, and a valve core which is matched with the air inlet and used for plugging the air inlet is arranged in the valve body. The setting of trachea connecting valve can make the better with the inflation equipment of pilot pin be connected.
Preferably, the valve core comprises an inserting column which can move along the axial direction of the air inlet and is inserted into the air inlet to block the air inlet, and a spring which drives the inserting column to move towards the air inlet is arranged on the inserting column.
Preferably, the end part of the trocar far away from the puncture tip is provided with a shifting block, one end of the shifting block is provided with an opening and a pressing groove which is coaxially arranged with the trocar, and the end part of the trachea connecting valve extends into the pressing groove.
The setting of shifting block, pressing groove can make the trocar more convenient, more stable at the in-process of pulling out, avoids the trocar to pull out the in-process pilot pin simultaneously and follows the skew condition of the locating position that the trocar moved and lead to.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that:
the invention not only can accurately position the pulmonary nodule, but also can release the positioning according to the actual requirement after grabbing and positioning the pulmonary nodule, is more flexible to use, and can be suitable for special conditions such as wrong puncture position, temporary non-reception of operation of a patient and the like.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a cross-sectional view of fig. 1.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a partially enlarged view of a portion B in fig. 3.
Fig. 6 is a schematic structural view of a pilot pin in embodiment 1 of the present invention.
Fig. 7 is a schematic structural diagram of the positioning block in fig. 6.
Fig. 8 is a schematic view of the positioning pin arrangement of fig. 7 in a positioning block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A lung nodule positioning puncture needle, as shown in fig. 1-8, comprising a trocar 1, a positioning needle 2 is arranged in the trocar 1, the end of the positioning needle 2 extends out of the trocar 1 to form a puncture tip 201, the positioning needle 2 comprises a hollow tube 202 and a positioning block 203 arranged in the tube 202, the positioning block 203 is arranged at the end of the tube 202 close to the puncture tip 201, and an air flow channel 204 communicated with the inside of the tube 202 and a positioning needle 205 capable of extending out of the tube 202 from the side wall of the tube 202 or completely retracting into the positioning block 203 under the action of air pressure are arranged in the positioning block 203.
When the pulmonary nodule is positioned in the embodiment, the puncture tip 201 is inserted into a lung under the guidance of the CT and penetrates through the pulmonary nodule, then the trocar 1 is pulled out and the inside of the positioning needle 2 is ventilated, the positioning needle body 205 extends out of the tube body 202 and is inserted into the pulmonary nodule under the action of air pressure, the positioning needle body 205 directly extends out and is inserted into the pulmonary nodule after ventilation in the mode, the pulmonary nodule can be accurately positioned as long as the CT guide position is accurate, the existing hook is not popped out and is easy to unhook only by utilizing the expansion of the hook, and the hook is required to move for a certain stroke to hook the pulmonary nodule so as to ensure that the positioning is difficult to be accurate.
When puncture position error appears, the patient does not receive special circumstances such as operation temporarily, only need to make and take out the inside gas of body 202 for the inside negative pressure that forms of body 202 can make location needle body 205 retract locating piece 203, relieves the location of location needle body 205 to the lung nodule, can extract pilot needle 2, the termination operation, and it is enough nimble to use, the special circumstances of being applicable to that can be better.
In this embodiment, the positioning block 203 is cylindrical, the air inlet 302 of the air flow channel 204 is located on the end face of the positioning block 203, the axial direction of the air flow channel 204 is the same as the axial direction of the positioning block 203, the air flow channels 204 are multiple and are uniformly distributed at the edge of the positioning block 203 around the axial direction of the positioning block 203, a plurality of sliding channels 206 which are arranged at equal intervals along the axial direction of the positioning block 203 are arranged in the positioning block 203 and are correspondingly communicated with each air flow channel 204, one end of each sliding channel 206 is communicated with the corresponding air flow channel 204, the other end of each sliding channel extends to the side wall of the positioning block 203 through the axial line of the positioning block 203, a plurality of pinholes 207 which are coaxially arranged with the corresponding sliding channels 206 and are in one-to-one correspondence are arranged on the side wall of the tube 202, and the positioning needle 205 is slidably arranged in the sliding channels 206 and can extend out of the tube 202 through the pinholes 207.
In this embodiment, each airflow channel 204 is correspondingly provided with two sliding channels 206 parallel to each other, and an acute included angle is formed between an axis of each sliding channel 206 and an axis of each airflow channel 204. The diameter of pinhole 207 is less than the diameter of sliding channel 206, and the inner wall that is located pinhole 207 department of body 202 constitutes spacing ladder face, is equipped with on the lateral wall of location needle body 205 with spacing ladder face complex spacing bulge loop 208, and the cooperation of spacing bulge loop 208 and spacing ladder face can prevent that location needle body 205 from deviating from sliding channel 206.
The distribution form of the positioning needle bodies 205 in this embodiment is a plurality of axial intervals, and the positioning needle bodies 205 extend from the end of the air flow channel 204 to the side wall of the positioning block 203 through the axis of the positioning block 203, that is, both ends of the positioning needle bodies 205 are located on opposite side surfaces of the positioning block 203, and the air flow channel 204 is uniformly arranged around the axis of the positioning block 203, so that the needle ends of the positioning needle bodies 205 can face all directions, all the positioning needle bodies 205 are integrally formed into a spiral barb, thereby being capable of grasping lung nodules better and more uniformly, avoiding the separation of the positioning needle bodies 205 from the lung nodules in the operation process, and ensuring the positioning stability.
The air flow channel 204 is arranged at the edge of the positioning block 203, and the end of the positioning needle 205 is positioned in the air flow channel 204 in the non-positioning state, so that the sliding channel 206 has enough length, and a sufficient stroke is provided for the movement of the positioning needle 205 in the sliding channel 206, and the positioning needle 205 is ensured to extend out of the tube body 202 and have enough extension length, so that the positioning needle can be better inserted into a pulmonary nodule.
The needle end of the positioning needle body 205 faces the side wall of the tube body 202 and can extend out of the tube body 202 from the side wall of the tube body 202, so that the pulmonary nodule can be well inserted under the action of air pressure to position the pulmonary nodule, the positioning mode is not easy to unhook, and the pulmonary nodule or corresponding tissues can be firmly grasped.
In this embodiment, a protruding strip (not shown in the figure) is disposed on the outer wall of the positioning block 203, a groove 210 for engaging the protruding strip is disposed on the inner wall of the tube 202, and the outer wall of the positioning block 203 is in interference fit with the inner wall of the tube 202, so that the positioning block 203 can be effectively prevented from rotating in the tube 202, the needle hole 207 can be ensured to be opposite to the positioning needle 205, and the positioning needle 205 can be ensured to smoothly extend out of the tube 202 through the corresponding needle hole 207.
The tubular body 202 in this embodiment comprises hose sections 211 connected in series, the outer diameter of the connecting pipe section 213 is gradually increased from the hard pipe to the puncture tip 201, the puncture tip 201 is in a solid conical shape, the maximum diameter of the connecting pipe section 213 is equal to the maximum diameter of the puncture tip 201, an air passing gap 214 with one end communicated with the outside of the trocar 1 is formed between the inner wall of the trocar 1 and the outer wall of the pipe body 202, an air passing channel 215 communicated with the other end of the air passing gap 214 is arranged on the outer wall of the connecting pipe section 213, an inclined plane capable of being tightly abutted against the outer wall of the connecting pipe section 213 is formed on the inner wall of the end part of the trocar 1, an annular concave shoulder 209 is formed by the end face of the trocar 1 and the outer wall of the connecting pipe section 213 close to the end part of the puncture tip 201, and the end part of the air passing channel 215 far away from the air passing gap 214 extends into the annular concave shoulder 209 and is communicated with the outside of the trocar 1.
In the embodiment, the puncture tip 201 is in a solid conical shape, and the end of the trocar 1 is attached to the outer wall of the connection tube section 213, which is better than the hollow puncture tip 201 to be inserted into the lung, and the body fluid of the hollow puncture tip 201 flows back into the air gap 214 through the tip during the insertion into the lung, thereby hindering the insertion of the positioning puncture needle. Air gap 214 and pilot pin 2 coaxial arrangement in this embodiment, and air passage 215 sets up on the lateral wall of connecting tube section 213, and form air current passageway 204 between air gap 214 and the air passage 215 promptly, and this passageway can guarantee puncture pointed end 201 and outside intercommunication in the pilot pin 2 inserts lung in-process, forms inside and outside atmospheric pressure balanced, is convenient for better the inserting of pilot pin 2.
The terminal surface of trocar 1 and the outer wall that is close to the most advanced 201 tip of puncture of connecting pipe section 213 constitute an annular concave shoulder 209 jointly, after inserting positioning needle 2 and making it reach the setpoint, the tissue can imbed in this annular concave shoulder 209, can make and compress tightly positioning needle 2 at the trocar 1 in-process of pulling out, it is more convenient to make pulling out of trocar 1 when making initial condition, it can keep inside and outside atmospheric pressure balanced to pull out the air current passageway 204 that in-process air gap 214 and air current passageway 215 formed between and, avoid trocar 1 to be adsorbed in lung inside, further make things convenient for pulling out of trocar 1.
The tip of keeping away from puncture tip 201 of body 202 in this embodiment is equipped with trachea connecting valve 3, and trachea connecting valve 3 includes inside vacuole formation and connects the valve body 301 at body 202 tip, and the one end of valve body 301 is equipped with air inlet 302, and the other end is equipped with and communicates gas outlet 303 with the body 202 is inside, is equipped with in the valve body 301 and cooperates the case 304 to the shutoff of air inlet 302 with air inlet 302. The valve element 304 includes a plug 305 capable of moving axially along the inlet 302 and inserted into the inlet 302 to block the inlet 302, and a spring 306 for driving the plug 305 to move toward the inlet 302 is disposed on the plug 305. The inflation or suction of the interior of the tube 202 can be effectively controlled by the arrangement of the trachea connection valve 3, so that the positioning needle 205 can be effectively extended or retracted.
In this embodiment, a dial 101 is disposed at an end of the trocar 1 far from the puncture tip 201, a pressing groove 102 is disposed on the dial 101 and has an opening at one end thereof and is coaxial with the trocar 1, and an end of the trachea connection valve 3 extends into the pressing groove 102. In the use process, the trocar 1 can be better pulled out through the shifting block 101, and the trachea connecting valve 3 is arranged in the pressing groove 102, so that an operator can press the trachea connecting valve 3 in the pulling-out process of the trocar 1, the movement of the positioning needle 2 along with the trocar 1 is avoided, and the stable pulling-out of the trocar 1 is further facilitated.
This embodiment assembles whole location pjncture needle earlier in the use for trachea connecting valve 3 connects gasbag or other air inflation equipment, then inserts location pjncture needle into the pulmonary nodule position under the CT guide, when inserting required position, extracts trocar 1, aerifys positioning needle 2 inside after extracting trocar 1, in location needle body 205 stretches out positioning needle 2 and inserts the pulmonary nodule under the atmospheric pressure effect, and the action is once accomplished, accomplishes accurate location. When special conditions occur and the operation is not continued, the positioning needle body 205 can retract into the positioning block 203 under the action of negative pressure by drawing out the air in the positioning needle 2, the positioning connection between the positioning needle body and the pulmonary nodule is released, then the positioning needle 2 can be pulled out, and the operation is stopped.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (8)
1. Pulmonary nodule fixes a position pjncture needle, including trocar (1), its characterized in that: a positioning needle (2) is arranged in the trocar (1), the end part of the positioning needle (2) extends out of the trocar (1) to form a puncture tip (201), the positioning needle (2) comprises a hollow tube body (202) and a positioning block (203) arranged in the tube body (202), the positioning block (203) is arranged at the end part, close to the puncture tip (201), of the tube body (202), an air flow channel (204) communicated with the inside of the tube body (202) and a positioning needle body (205) capable of extending out of the tube body (202) from the side wall of the tube body (202) or completely retracting into the inside of the positioning block (203) under the action of air pressure are arranged in the positioning block (203); locating piece (203) is cylindricly, air inlet (302) of airflow channel (204) are located on locating piece (203) terminal surface and airflow channel (204) axial and locating piece (203) axial the same, airflow channel (204) are a plurality of and around locating piece (203) axial evenly distributed in the edge of locating piece (203), be equipped with in locating piece (203) and correspond a plurality of sliding channel (206) that set up along locating piece (203) axial equidistant that communicate with every airflow channel (204), sliding channel (206) one end and airflow channel (204) intercommunication, the other end extends to on locating piece (203) lateral wall through locating piece (203) axis, be equipped with on body (202) lateral wall a plurality of with sliding channel (206) coaxial setting and pinhole (207) of one-to-one, location needle body (205) slide and set up in sliding channel (206) and can stretch out body (202) through pinhole (207).
2. The lung nodule positioning puncture needle of claim 1, wherein: each airflow channel (204) is correspondingly provided with two mutually parallel sliding channels (206), and the axis of each sliding channel (206) and the axis of each airflow channel (204) form an acute included angle.
3. The lung nodule positioning puncture needle of claim 1, wherein: the diameter of pinhole (207) is less than the diameter of slide channel (206), and the inner wall that is located pinhole (207) department of body (202) constitutes spacing ladder face, is equipped with on the lateral wall of location needle body (205) with spacing ladder face complex spacing bulge loop (208).
4. The lung nodule positioning puncture needle of claim 1, wherein: the outer wall of the positioning block (203) is provided with a convex strip, the inner wall of the pipe body (202) is provided with a groove (210) for clamping the convex strip, and the outer wall of the positioning block (203) is in interference fit with the inner wall of the pipe body (202).
5. The lung nodule positioning puncture needle of claim 1, wherein: the tube body (202) comprises a hose section (211), a hard tube section (212) and a connecting tube section (213) which are sequentially connected, the connecting tube section (213) is connected with the puncture tip end (201), the outer diameter of the connecting tube section (213) is gradually increased from the hard tube to the puncture tip end (201), the puncture tip end (201) is in a solid cone shape, the maximum diameter of the connecting tube section (213) is equal to the maximum diameter of the puncture tip end (201), an air passing gap (214) with one end communicated with the outside of the trocar (1) is formed between the inner wall of the trocar (1) and the outer wall of the tube body (202), an air passing channel (215) communicated with the other end of the air passing gap (214) is arranged on the outer wall of the connecting tube section (213), an inclined plane capable of abutting against the outer wall of the connecting tube section (213) is formed on the inner wall of the end of the trocar (1), and an annular concave shoulder (209) is formed by the end face of the connecting tube section (213) and the outer wall of the connecting tube section (213) close to the end of the puncture tip end (201), the end of the air passing channel (215) far away from the air passing gap (214) extends into the annular concave shoulder (209) and is communicated with the exterior of the trocar (1).
6. The lung nodule positioning puncture needle of claim 1, wherein: the tip of keeping away from puncture pointed end (201) of body (202) is equipped with trachea connecting valve (3), trachea connecting valve (3) including inside vacuole formation and connect valve body (301) at body (202) tip, the one end of valve body (301) is equipped with air inlet (302), the other end be equipped with gas outlet (303) of the inside intercommunication of body (202), be equipped with in valve body (301) with air inlet (302) cooperation to case (304) of air inlet (302) shutoff.
7. The lung nodule positioning puncture needle of claim 6, wherein: the valve core (304) comprises an insert column (305) which can move along the axial direction of the air inlet (302) and is inserted into the air inlet (302) to block the air inlet (302), and a spring (306) which drives the insert column (305) to move towards the air inlet (302) is arranged on the insert column (305).
8. The lung nodule positioning puncture needle of claim 6, wherein: the end part of the trocar (1) far away from the puncture tip end (201) is provided with a shifting block (101), one end of the shifting block (101) is provided with an opening and a pressing groove (102) which is coaxial with the trocar (1), and the end part of the trachea connecting valve (3) extends into the pressing groove (102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210100398.0A CN114259308B (en) | 2022-01-27 | 2022-01-27 | Pulmonary nodule positioning puncture needle |
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| CN202210100398.0A CN114259308B (en) | 2022-01-27 | 2022-01-27 | Pulmonary nodule positioning puncture needle |
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| CN114259308B true CN114259308B (en) | 2022-08-26 |
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| CN117838260B (en) * | 2024-01-29 | 2024-08-13 | 中国人民解放军陆军军医大学第二附属医院 | Nodule positioning and auxiliary measuring tool |
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| CN109805973A (en) * | 2017-11-22 | 2019-05-28 | 朔健医疗器械（上海）有限公司 | It is a kind of to can be taken off and position firm lung therapeutic device |
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