CN219629676U

CN219629676U - Ultrasonic guided thyroid puncture needle

Info

Publication number: CN219629676U
Application number: CN202320348513.6U
Authority: CN
Inventors: 单思维; 刘从兵
Original assignee: Suqian Hospital Of Nanjing Gulou Hospital Group
Current assignee: Suqian Hospital Of Nanjing Gulou Hospital Group
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-09-05
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to the field of medical instruments, in particular to an ultrasonic guided thyroid puncture needle, which comprises a hollow needle core and a hollow needle sheath, wherein the length of the needle core is larger than that of the needle sheath, the outer diameter of the needle core is smaller than the inner diameter of the needle sheath, the needle core penetrates through the needle sheath, one end of the needle core is suitable for being connected with an injector, the other end of the needle core is suitable for contacting with a nodular cell, and at least two fine holes are arranged on the side surface of the needle sheath and communicated with the inner cavity of the needle sheath. According to the utility model, at least two fine holes are formed in the outer wall of the needle sheath puncture end, and the retainer is arranged in each fine hole and used for keeping the position of the needle core, so that the distance between the needle core and the inner wall of the needle sheath puncture end is kept, the needle core cannot scrape the inner wall of the needle sheath puncture end when being drawn in the needle sheath, and the intra-nodule cells attached to the needle core cannot remain on the needle sheath puncture end, so that normal tissues cannot be polluted when the needle sheath is pulled out.

Description

Ultrasonic guided thyroid puncture needle

Technical Field

The utility model relates to the field of medical equipment, in particular to an ultrasonic guided thyroid puncture needle.

Background

At present, the incidence rate of thyroid nodules, particularly thyroid cancers, is increasingly high, and the ultrasonic guided puncture biopsy cytology examination of the thyroid nodules is an important means for clinically identifying benign and malignant thyroid nodules.

The ultrasonic guided puncturing process of the thyroid nodule comprises the following steps: positioning a target nodule by ultrasonic percutaneous; puncturing the nodule with a puncturing needle under the guidance of bare-handed ultrasound; the back-pumping injector generates negative pressure to pump out tissue cells in the nodule; pulling out the puncture needle, pushing out tissue cells on the glass slide by using the pressure of the injector, and carrying out cytological examination; the above is repeated if the same nodule is to be sampled multiple times. There are a number of deficiencies in the above described needle aspiration biopsy procedure of thyroid nodules:

(1) Because the injector can not be matched with the ultrasonic puncture guide device for use, a clinician can only conduct by bare hands, and is difficult to puncture into a node to be punctured at one time, the position of the puncture needle is required to be adjusted for multiple times, internal thyrorrhagia can be caused due to rich thyroxine blood supply, and the cytological examination result can be greatly influenced by the fact that a great amount of erythrocytes are contained in the extracted tissue, so that the pain and the operation time of a patient are increased;

(2) After the puncture suction is finished, the attached intra-nodule cells on the outer wall of the needle can be brought to normal tissues when the puncture needle is pulled out, and if the nodule is malignant tumor, the metastasis of the needle tract can be caused;

(3) If the same nodule needs to be sampled for multiple times, the ultrasound guided puncture needs to be performed for multiple times, the operation is complicated, and the pain of a patient and the possibility of needle tract transfer are increased.

At present, a thyroid puncture device clinically appears, which mainly comprises a needle core, a needle sheath sleeved outside the needle core and an injector, and the using method comprises the following steps:

ultrasonic positioning the nodule to be punctured in the thyroid gland, holding a handle at the tail end of a needle sheath, percutaneous puncturing the needle sheath into a human body through a guide of an ultrasonic probe, observing an ultrasonic image, stopping needle insertion when the puncturing end of the needle sheath punctures to the edge of the nodule, enabling the needle sheath to stay outside the nodule, inserting a needle core of a tail end connecting injector into the needle sheath, observing the ultrasonic image, retracting the injector after the needle core exceeds the puncturing end of the needle sheath to enter a target position of the nodule to be punctured, sucking target tissue cells of the nodule by utilizing negative pressure, extracting the needle core after tissue cell suction is finished, finally extracting the needle sheath, and taking out a tissue cell sample in the needle core for inspection;

if the same target nodule is required to be sampled at a plurality of positions, the needle core is pulled out for sampling after the tissue cells of the nodule are sucked by the back suction syringe each time, the needle sheath is left in place, the position of the needle sheath is finely adjusted under the guidance of the ultrasonic diagnostic instrument before the needle core is inserted again, then the needle core back suction syringe is inserted to suck the tissue cells of the target nodule by utilizing negative pressure, the tissue cells are pulled out for sampling after the tissue cells are sucked, the same nodule can be sampled for a plurality of times by repeating the above operation, and the needle core is pulled out and the needle sheath is pulled out after the tissue cells are sucked for the last time.

Although the thyroid puncture device is only required to be inserted into the needle sheath once, the needle sheath is not contacted with the nodule, and the situation that cells in the nodule are brought to normal tissues when the needle sheath is pulled out can be theoretically avoided; however, in practice, when the needle sheath is left in place and the needle core is pulled out, the needle core is longer and only can control the needle core to be connected with one end of the injector, so that the needle core and the needle sheath are difficult to ensure to be coaxial all the time, the inner wall of the puncture end of the needle sheath can be scraped when the needle core moves relative to the needle sheath, and the intra-nodular cells attached on the needle core remain at the puncture end of the needle sheath; when the needle sheath is withdrawn, the intra-nodal cells remaining at the puncture site are carried to normal tissue.

Disclosure of Invention

The utility model aims to provide an ultrasonic guided thyroid puncture needle, which aims to solve the problem that when a needle core is pulled out from a needle sheath, the needle core scrapes the inner wall of the puncture end of the needle sheath, so that cells in a node attached to the needle core remain at the puncture end of the needle sheath.

The embodiment of the utility model provides an ultrasonic guided thyroid puncture needle, which comprises a hollow needle core and a hollow needle sheath, wherein the length of the needle core is larger than that of the needle sheath, the outer diameter of the needle core is smaller than the inner diameter of the needle sheath, the needle core penetrates through the needle sheath, one end of the needle core is suitable for being connected with a syringe, the other end of the needle core is suitable for contacting with a nodular cell, at least two fine holes are formed in the side surface of the needle sheath, and the fine holes are communicated with the inner cavity of the needle sheath; and a retainer is penetrated in the fine hole, and is suitable for contacting the needle core and keeping the needle core from contacting the inner wall of the puncture end of the needle sheath when moving.

Further, in the ultrasonic-guided thyroid puncture needle, the holder may comprise a wire, both ends of the wire may be fixed in the fine hole, and the wire may not be exposed from the outer wall of the needle sheath.

Further, in the ultrasonic-guided thyroid puncture needle, the plunger is plugged in the pore, the wire is extruded between the outer wall of the plunger and the inner wall of the pore, and the plunger does not protrude out of the outer wall of the needle sheath.

Further, the ultrasonic guided thyroid puncture needle is characterized in that the thread is a hot melt thread and is suitable for being melted and fixed in the pore after being heated.

Further, in the ultrasonic-guided thyroid puncture needle, the number of the pores is two, a connecting wire of two pore positions passes through the axis of the needle sheath, each pore is fixed at one end of the wire, and the wire is wound around the needle core at least one turn.

Further, the thyroid puncture needle guided by the ultrasonic wave comprises a hard supporting rod, wherein the tail end of the hard supporting rod is provided with an arc surface, and the arc surface is matched with the outer wall of the needle core.

Further, the thyroid puncture needle guided by the ultrasonic wave comprises a thick rod and a thin rod which are coaxially connected, the cambered surface is positioned at the end part of the thick rod, and the thin rod is suitable for being fixed in the fine hole.

Further, the ultrasonic guided thyroid puncture needle is characterized in that the thin rod is a hot melt rod and is suitable for being melted and fixed in the thin hole after being heated.

Further, in the ultrasonic-guided thyroid puncture needle, the number of the pores is two, one hard stay rod is arranged in each pore, and the axes of the two hard stay rods are coplanar.

Further, in the ultrasonic-guided thyroid puncture needle, the number of the pores is three, one hard stay bar is arranged in each pore, and the included angle between the axes of two adjacent hard stay bars is 120 degrees.

The ultrasonic guided thyroid puncture needle provided by the utility model has the advantages that:

through setting up two at least micropores on the outer wall of needle sheath puncture end, set up the position that the retainer is used for keeping the nook closing member in the pore, make nook closing member and the puncture end inner wall of needle sheath keep apart from to make the nook closing member can not scratch the puncture end inner wall of needle sheath when being drawn in the needle sheath, the intra-nodular cell that adheres to on the nook closing member can not remain on the puncture end of needle sheath yet, so can not pollute normal tissue when extracting the needle sheath.

Drawings

FIG. 1 is a perspective view of a thyroid puncture needle according to embodiment 1 of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a left side view of the thyroid puncture needle of embodiment 3 of the present utility model;

FIG. 4 is a perspective view of a thyroid puncture needle according to embodiment 4 of the present utility model.

Reference numerals: 1. a needle core; 2. a needle sheath; 21. fine pores; 3. a silk thread; 4. a plunger; 5. a rigid brace; 51. a thin rod; 52. thick rods; 521. a cambered surface.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Examples

Referring to fig. 1 and 2, an embodiment 1 of the present utility model provides an ultrasonic guided thyroid puncture needle, which comprises a needle sheath 2 and a needle core 1 penetrating the needle sheath 2, wherein the needle core 1 and the needle sheath 2 are hollow tubes made of an alloy material which can be clearly displayed by an ultrasonic diagnostic apparatus, the puncture ends of the needle core 1 and the needle sheath 2 are sharp inclined surfaces, the length of the needle core 1 is greater than the length of the needle sheath 2, and the outer diameter of the needle core 1 is smaller than the inner diameter of the needle sheath 2. The end of the needle core 1 far away from the puncture end is used for being connected with a syringe, and when the puncture end of the needle core 1 contacts a node, the syringe can be pumped back to suck the tissue cells of the node by utilizing negative pressure.

Referring to fig. 2, two fine holes 21 are provided on the side of the needle sheath 2, the fine holes 21 are led into the inner cavity of the needle sheath 2, the position connecting lines of the two fine holes 21 pass through the axis of the needle sheath 2, and the two fine holes 21 are located on the piercing end of the needle sheath 2. The wire 3 is inserted into the fine hole 21 as a holder, and the holder is configured to extend into the needle sheath 2 to contact the needle core 1, and to keep the needle core 1 from contacting the inner wall of the puncture end of the needle sheath 2 when moving.

Referring to fig. 2, two ends of the wire 3 are respectively fixed in one of the holes 21 by plugging the plunger 4 into the hole 21, so that the wire 3 is pressed between the outer wall of the plunger 4 and the inner wall of the hole 21. In order to avoid that the wire 3 affects the penetration of the needle sheath 2, both the wire 3 and the plunger 4 need to be kept free from being exposed to the outer wall of the needle sheath 2. When the wire 3 is attached, if the end of the wire 3 is exposed to the outer wall of the needle sheath 2, it is necessary to cut the exposed portion of the wire 3 against the outer wall of the needle sheath 2 with a cutter.

Referring to fig. 2, when installing the thread 3, one end of the thread 3 is threaded into the fine hole 21 before the inner wall of the penetrating end of the needle sheath 2, then the plunger 4 is inserted into the fine hole 21 from the outer wall of the needle sheath 2 to press the end of the thread 3, then the thread 3 is wound around the needle core 1 for two times, and then the thread 3 is threaded into the other fine hole 21 from the inner wall of the penetrating end of the needle sheath 2, the thread 3 is kept in a straightened state while the needle core 1 is kept from contacting the inner wall of the penetrating end of the needle sheath 2, then the thread 3 is fixed in the fine hole 21 by the other plunger 4, and finally the portions of the two ends of the thread 3 exposed out of the outer wall of the needle sheath 2 are cut off by a cutter.

In summary, according to the ultrasonic-guided thyroid puncture needle of the present utility model, at least two pores 21 are provided on the outer wall of the puncture end of the needle sheath 2, and a holder is provided in the pores 21 to hold the position of the needle core 1, so that the needle core 1 is kept away from the inner wall of the puncture end of the needle sheath 2, the inner wall of the puncture end of the needle sheath 2 is not scraped when the needle core 1 is withdrawn in the needle sheath 2, and the intra-nodular cells attached to the needle core 1 are not remained on the puncture end of the needle sheath 2, so that normal tissues are not contaminated when the needle sheath 2 is withdrawn.

Examples

Embodiment 2 of the present utility model provides an ultrasonic-guided thyroid puncture needle, which is different from embodiment 1 in that: the wire 3 is fixed in the fine hole 21 without using the plunger 4. When the thread 3 is threaded into the pores 21, the thread 3 is heated around the pores 21 by a heat source to melt the thread 3 and then cooled and fixed in the pores 21.

When the silk thread 3 is installed, the silk thread 3 is clamped by forceps, the silk thread 3 is fed into the fine hole 21 from the inner wall of the puncture end of the needle sheath 2, the silk thread 3 in the fine hole 21 is melted by heating the outer wall of the needle sheath 2 beside the fine hole 21 by a lighter, and after cooling, the forceps are released, so that the fixation of one end of the silk thread 3 can be completed.

Examples

Referring to fig. 3, embodiment 3 of the present utility model provides an ultrasonic guided thyroid puncture needle, which is different from embodiment 1 in that: instead of fixing the wire 3 by the plunger 4 and by the wire 3 as a holder, a hard stay 5 is used as a holder, one hard stay 5 is inserted into each of the holes 21, and the axes of the two hard stays 5 are coplanar.

Referring to fig. 3, the rigid stay 5 is composed of a thick rod 52 and a thin rod 51 which are integrally and coaxially connected, the thin rod 51 is used for being plugged into the fine hole 21 for fixation, and the thick rod 52 is used for abutting against the outer wall of the needle core 1. The end of the thick rod 52 is provided with an arc surface 521, and the arc surface 521 is fittingly attached to the outer wall of the needle core 1. The thin rod 51 is a hot melt rod, and the thin rod 51 can be fixed in the fine hole 21 by heating the outer wall of the needle sheath 2 near the fine hole 21 and then cooling it.

Examples

Referring to fig. 4, embodiment 4 of the present utility model provides an ultrasonic guided thyroid puncture needle, which is different from embodiment 3 in that: the number of the pores 21 is three, one hard stay bar 5 is fixed in each pore 21, and the included angle of the axes of two adjacent hard stay bars 5 is 120 degrees.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present utility model.

Claims

1. An ultrasonic guided thyroid puncture needle, comprising a hollow needle core (1) and a hollow needle sheath (2), wherein the length of the needle core (1) is larger than that of the needle sheath (2), the outer diameter of the needle core (1) is smaller than the inner diameter of the needle sheath (2), the needle core (1) penetrates through the needle sheath (2), one end of the needle core (1) is suitable for being connected with a syringe, and the other end of the needle core (1) is suitable for contacting with a nodular cell, and the ultrasonic guided thyroid puncture needle is characterized in that at least two fine holes (21) are formed in the side surface of the needle sheath (2), and the fine holes (21) are communicated with the inner cavity of the needle sheath (2); a retainer is arranged in the fine hole (21) in a penetrating way, and is suitable for contacting the needle core (1) and keeping the needle core (1) from contacting the inner wall of the puncture end of the needle sheath (2) when moving.

2. The ultrasound guided thyroid puncture needle according to claim 1, characterized in that the holder comprises a wire (3), both ends of the wire (3) being fixed within the fine hole (21), the wire (3) not being exposed to the outer wall of the needle sheath (2).

3. The ultrasonically guided thyroid puncture needle according to claim 2, characterized in that a plunger (4) is plugged into the fine hole (21), the wire (3) is pressed between the outer wall of the plunger (4) and the inner wall of the fine hole (21), and the plunger (4) does not protrude from the outer wall of the needle sheath (2).

4. An ultrasound guided thyroid puncture needle according to claim 2, characterized in that the wire (3) is a hot melt wire adapted to be melted and fixed in the pores (21) after being heated.

5. The ultrasound guided thyroid puncture needle according to claim 2, characterized in that the number of the pores (21) is two, a line connecting the positions of the two pores (21) passes through the axis of the needle sheath (2), each pore (21) fixes one end of the wire (3), and the wire (3) is wound around the needle core (1) at least one turn.

6. The ultrasound guided thyroid puncture needle according to claim 1, wherein the holder comprises a rigid stay (5), wherein an arc surface (521) is arranged at the end of the rigid stay (5), and the arc surface (521) is matched with the outer wall of the needle core (1).

7. The ultrasound guided thyroid puncture needle according to claim 6, characterized in that the stiff stay (5) comprises a thick rod (52) and a thin rod (51) coaxially connected, the cambered surface (521) being located at the end of the thick rod (52), the thin rod (51) being adapted to be fixed within the fine hole (21).

8. An ultrasonically guided thyroid puncture needle according to claim 7, characterized in that the thin rod (51) is a hot melt rod adapted to be melted and fixed within the fine hole (21) after being heated.

9. The ultrasonically guided thyroid puncture needle according to claim 6, characterized in that the number of the pores (21) is two, one of the hard struts (5) is provided in each pore (21), and the axes of the two hard struts (5) are coplanar.

10. The ultrasonically guided thyroid puncture needle according to claim 6, characterized in that the number of the pores (21) is three, one rigid stay (5) is arranged in each pore (21), and the included angle between the axes of two adjacent rigid stay (5) is 120 °.