Thyroid fine needle puncture tissue flaking injector

Abstract

The utility model discloses a thyroid fine needle puncture tissue slide preparation injector, and relates to the field of medical equipment. The injector comprises a needle cylinder and a push rod assembly, a connector is arranged at the lower end of the needle cylinder, a needle head with thyroid tissue is arranged on the connector in a sleeving mode, and the push rod assembly is pushed, so that air in an injection cavity passes through the needle head, and the thyroid tissue in the needle head is extruded out. A first vent hole is formed in the bottom wall of the injection cavity, and the first membrane is located in the injection cavity and covers the first vent hole. And when the injector sucks air again, the push rod assembly is pulled, so that the first diaphragm is ejected by air to enter the injection cavity. And when the pushing assembly compresses the injection cavity, the first diaphragm can block the first vent hole, so that air in the injection cavity is discharged through the inner cavity of the connector. Therefore, the needle does not need to be repeatedly disassembled and assembled for air suction, the operation process can be simplified, the slide preparation difficulty is reduced, tissue and blood can be effectively prevented from splashing easily, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a thyroid fine needle aspiration tissue preparation syringe. Background Art

[0002] After fine-needle aspiration of the thyroid, the syringe plunger is pushed to squeeze the thyroid tissue out of the needle for sectioning and observation. Because the thyroid tissue is mixed with blood, it tends to coagulate quickly, causing needle blockage. The sectioning process requires repeated removal of the needle to aspirate air, making it difficult to prepare the sample. A clogged needle requires forceful expulsion of the tissue, which can easily splatter tissue and blood, leading to tissue loss and contamination of the surrounding environment and the operator. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a thyroid fine needle aspiration tissue preparation syringe that allows for smooth aspiration without removing the needle, thus simplifying the operation and improving the safety of the operation.

[0004] The thyroid fine needle aspiration tissue preparation syringe according to the embodiment of the utility model comprises: a syringe having a connector for connecting to a needle at its lower end, the syringe having an injection cavity, the injection cavity being able to communicate with the inner cavity of the connector;

[0005] a push rod assembly, slidably connected to the injection cavity;

[0006] In which, the bottom wall of the injection chamber is provided with a first air vent connected to the injection chamber; the thyroid fine needle aspiration tissue preparation syringe also includes a first diaphragm, which is connected to the bottom wall of the injection chamber and can cover the first air vent; when the push rod assembly moves away from the bottom wall of the injection chamber, the air outside the syringe can enter the injection chamber through the first air vent; when the push rod assembly moves close to the bottom wall of the injection chamber, the first diaphragm can close the first air vent.

[0007] The thyroid fine needle aspiration tissue preparation syringe according to the embodiment of the utility model has at least the following beneficial effects:

[0008] By installing a connector at the lower end of the syringe, the needle containing thyroid tissue is placed over the connector. The push rod assembly is then pushed to compress the injection chamber, allowing air in the injection chamber to be expelled through the needle and expelling the thyroid tissue within the needle. Because the bottom wall of the injection chamber is provided with a first vent, and a first diaphragm is positioned within the injection chamber and covers the first vent, when the syringe needs to be re-inhaled, the push rod assembly is pulled, allowing air to push open the first diaphragm and enter the injection chamber through the first vent. When the push rod assembly compresses the injection chamber, the first diaphragm again blocks the first vent, allowing air in the injection chamber to be expelled through the inner cavity of the connector, thereby smoothly expelling the thyroid tissue within the needle. This eliminates the need for repeated disassembly and assembly of the needle for inhalation, simplifying the operation process and reducing the difficulty of preparation. If advancement becomes difficult, the push rod assembly can be pulled to re-inhale air and then slowly advance. This effectively prevents tissue and blood from splattering, causing tissue loss and contaminating the surrounding environment and the operator, thereby improving operational safety.

[0009] According to some embodiments of the present invention, the bottom wall of the injection cavity is provided with a protrusion, the protrusion covers the air inlet end of the connector, the protrusion is provided with a second vent, the injection cavity is connected to the inner cavity of the connector through the second vent, and the thyroid fine needle aspiration tissue preparation syringe further includes a second diaphragm, the second diaphragm is located on the side of the protrusion facing the connector, and the second diaphragm is capable of covering the second vent;

[0010] When the push rod assembly moves along the bottom wall away from the injection cavity, the second diaphragm can close the second vent hole; when the push rod assembly moves along the bottom wall close to the injection cavity, the air in the injection cavity can enter the inner cavity of the connector through the second vent hole.

[0011] According to some embodiments of the present invention, the push rod assembly includes a piston portion and a push rod portion, the piston portion is located in the injection cavity and abuts against the inner wall of the injection cavity, one end of the push rod portion is connected to the piston portion, and the other end of the push rod portion passes through the injection cavity, and the piston portion is provided with a recess on the side facing the protrusion, and the recess is used to avoid the protrusion.

[0012] According to some embodiments of the present invention, a plurality of second vent holes are provided at intervals, and the number of the second diaphragms is the same as the number of the second vent holes, and the second diaphragms correspond one-to-one to the plurality of second vent holes.

[0013] According to some embodiments of the present invention, there are multiple first air vents, and the multiple first air vents are spaced apart around the air inlet end of the connector. The number of the first diaphragms is the same as the number of the first air vents, and they correspond one-to-one with the multiple first air vents.

[0014] According to some embodiments of the present invention, the push rod assembly includes a piston portion and a push rod portion, the piston portion is located in the injection cavity, one end of the push rod portion is connected to the piston portion, and the other end of the push rod portion passes through the injection cavity and is fixedly connected to a push plate, and the upper end surface of the push plate is provided with an anti-slip structure.

[0015] According to some embodiments of the present invention, the anti-slip structure includes a plurality of ribs arranged at intervals.

[0016] According to some embodiments of the present invention, a gusset plate is provided at the upper end of the syringe, and the gusset plate extends along both sides of the syringe in the radial direction.

[0017] According to some embodiments of the present invention, the thyroid fine needle aspiration tissue preparation syringe further includes a needle, and the needle is detachably connected to the connector.

[0018] According to some embodiments of the present invention, the outer diameter of the connector gradually decreases in a direction away from the syringe.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic structural diagram of a syringe according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a syringe according to an embodiment of the present invention;

[0023] Figure 3 It is a cross-sectional view of a syringe according to an embodiment of the present invention, with the first diaphragm and the second diaphragm hidden;

[0024] Figure 4 is a cross-sectional view of a syringe according to an embodiment of the present invention and shows a first diaphragm and a second diaphragm;

[0025] Figure 5 This is a top view of a syringe according to an embodiment of the present invention, with the first diaphragm and the second diaphragm hidden;

[0026] Figure 6 It is a structural schematic diagram of a syringe push rod assembly according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Syringe 1000;

[0029] Syringe 100; connector 110; injection cavity 120; first vent 130; first diaphragm 140; protrusion 150; second vent 151; second diaphragm 152; buckle plate 160;

[0030] Push rod assembly 200; piston portion 210; recess 211; push rod portion 220; push plate 221; anti-slip structure 222; rib 223;

[0031] Needle 300. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference Figure 1 and Figure 2As shown, an injection chamber 120 according to one embodiment of the present invention can be used for fine needle aspiration of the thyroid gland for tissue preparation. The injection chamber 120 according to the present embodiment includes a syringe 100, a push rod assembly 200, and a needle 300. A connector 110 is provided at the lower end of the syringe 100, and the needle 300 is detachably connected to the connector 110. The syringe 100 includes an injection chamber 120, which is communicable with the inner cavity of the connector 110. The push rod assembly 200 is slidably connected to the injection chamber 120. Pushing or pulling the push rod assembly 200 allows for air to be expelled or inhaled from the injection chamber 120.

[0037] Among them, reference Figure 3 and Figure 4 As shown, the bottom wall of the injection cavity 120 is provided with a first vent 130, which is connected to the injection cavity 120. The syringe 1000 also includes a first diaphragm 140, which is connected to the bottom wall of the injection cavity 120 and can cover the first vent 130. When the push rod assembly 200 moves along the bottom wall away from the injection cavity 120, that is, when the push rod 200 assembly is pulled, air outside the syringe 100 enters the injection cavity 120 through the first vent 130; when the push rod assembly 200 moves along the bottom wall close to the injection cavity 120, that is, when the push rod assembly 200 is pressed, the first diaphragm 140 can close the first vent 130.

[0038] It is understood that by adopting the above solution, the needle 300 containing thyroid tissue is placed on the connector 110, and the push rod assembly 200 is pushed to compress the injection cavity 120, causing the air in the injection cavity 120 to be discharged through the needle 300, thereby squeezing out the thyroid tissue in the needle 300. Because the bottom wall of the injection cavity 120 is provided with a first vent 130, and the first diaphragm 140 is located within the injection cavity 120 and covers the first vent 130, when the syringe 1000 needs to be re-inhaled, the push rod assembly 200 is pulled, allowing air to push open the first diaphragm 140 and enter the injection cavity 120 through the first vent 130. When the push rod assembly compresses the injection cavity 120, the first diaphragm 140 can again block the first vent 130, allowing the air in the injection cavity 120 to be discharged through the inner cavity of the connector 110, thereby smoothly squeezing out the thyroid tissue in the needle 300. Therefore, there is no need to repeatedly disassemble and assemble the needle 300 for suction, which can simplify the operation process and reduce the difficulty of making the film. If it is difficult to push, the push rod assembly 200 can be pulled to re-inhale and slowly advance, which can effectively avoid tissue and blood splashing and causing tissue loss, contaminating the surrounding environment and the operator, and improving the safety of the operation.

[0039] In order to avoid the situation that the thyroid tissue in the needle 300 is sucked into the injection cavity 120 when the push rod assembly 200 is pulled to inhale, Figure 3 and Figure 4As shown, in an embodiment of the present invention, the bottom wall of the injection cavity 120 is provided with a protrusion 150, which covers the air inlet end of the connector 110. The protrusion 150 is provided with a second vent 151, through which the injection cavity 120 communicates with the inner cavity of the connector 110. The syringe 1000 also includes a second diaphragm 152, which is located on the side of the protrusion 150 facing the connector 110 and can cover the second vent 151. When the push rod assembly 200 moves along the bottom wall away from the injection cavity 120, the second diaphragm 152 can close the second vent 151; when the push rod assembly 200 moves along the bottom wall close to the injection cavity 120, air in the injection cavity 120 can enter the inner cavity of the connector 110 through the second vent 151.

[0040] Therefore, by adopting the above solution, when the push rod assembly 200 is pulled, the first vent 130 inhales air, while the second vent 151 is closed by the second diaphragm 152, allowing air to enter the injection cavity 120 while effectively preventing the thyroid tissue in the needle 300 from being sucked into the injection cavity 120. When the push rod assembly 200 is pushed, the first vent 130 is closed by the first diaphragm 140, while the second vent 151 can release air, thereby smoothly extruding the thyroid tissue and improving the success rate of slice preparation.

[0041] It should be noted that the first diaphragm 140 and the second diaphragm 152 can be made of a flexible membrane that can produce flexible deformation and thus move under the action of airflow to close or open the corresponding vents.

[0042] Reference Figure 5 As shown, in an embodiment of the present invention, a plurality of first air vents 130 are provided, and the plurality of first air vents 130 are spaced apart around the air inlet end of the connector 110. The number of first diaphragms 140 is the same as the number of first air vents 130, and they correspond one-to-one with the plurality of first air vents 130. A plurality of second air vents 151 are spaced apart, and the number of second diaphragms 152 is the same as the number of second air vents 151, and they correspond one-to-one with the plurality of second air vents 151. It is understandable that by providing a plurality of first air vents 130 and a plurality of second air vents 151, the air intake efficiency and the air outlet efficiency can be improved. When one of the first air vents 130 or the second air vents 151 is blocked, the other first air vents 130 and the second air vents 151 can still play a corresponding role, which can improve the overall reliability and stability of the syringe 1000.

[0043] Reference Figure 4 and Figure 6As shown, in an embodiment of the present invention, the push rod assembly 200 includes a piston portion 210 and a push rod portion 220. The piston portion 210 is positioned within the injection chamber 120 and abuts against the inner wall of the injection chamber 120 to reduce gas leakage between the piston portion 210 and the inner wall of the injection chamber 120. For example, the piston portion 210 can be made of rubber or silicone material, which improves the sealing effect through elastic deformation. One end of the push rod portion 220 is connected to the piston portion 210, and the other end of the push rod portion 220 extends out of the injection chamber 120. This facilitates the user to push or pull the push rod portion 220 to control the extrusion of thyroid tissue. The piston portion 210 has a recessed portion 211 on the side facing the protrusion 150, which is designed to avoid the protrusion 150. This allows the piston portion 210 to conform to the bottom wall of the injection chamber 120, more smoothly extruding thyroid tissue from the needle 300 and improving film production efficiency.

[0044] In order to reduce the slipping when pushing the push rod 220, refer to Figure 4 As shown, in the embodiment of the present invention, the other end of the push rod portion 220 passes through the injection cavity 120 and is fixedly connected to the push plate 221. The upper end surface of the push plate 221 is provided with an anti-slip structure 222. The anti-slip structure 222 can be a plurality of spaced ribs 223, a plurality of spaced protrusions, a plurality of mesh-shaped strips, a plurality of spaced grooves, staggered grooves, etc., which can increase the friction between the hand and the push plate 221, thereby reducing slippage, improving operational safety and the user experience.

[0045] Reference Figure 4 As shown, in the embodiment of the present invention, a pinch plate 160 is provided at the upper end of the syringe 100, and the pinch plate 160 extends along both radial sides of the syringe 100. Therefore, when using the syringe 1000, the thumb can be placed against the upper end of the push plate 221, and the ring finger and middle finger can hold the syringe 100 and place them against both sides of the lower end of the pinch plate 160, so as to facilitate the exertion of force to push the push rod 220, thereby improving the ease of operation.

[0046] In order to facilitate the connection between the needle 300 and the connector 110, refer to Figure 3 As shown, in this embodiment of the present invention, the outer diameter of connector 110 gradually decreases as it moves away from syringe 100, facilitating insertion of connector 110 into the pintle of needle 300 and improving the ease and stability of the connection. Simultaneously, the inner diameter of connector 110 also gradually decreases as it moves away from syringe 100, thereby increasing the exhaust velocity and effectively squeezing the thyroid tissue out of needle 300, thereby improving extrusion efficiency.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A syringe for preparing thyroid fine needle aspiration tissue slices, characterized in that: include: A syringe, the lower end of which is provided with a connector for connecting to a needle, the syringe being provided with an injection cavity, the injection cavity being able to communicate with the inner cavity of the connector; a push rod assembly, slidably connected to the injection cavity; In which, the bottom wall of the injection chamber is provided with a first air vent connected to the injection chamber; the thyroid fine needle aspiration tissue preparation syringe also includes a first diaphragm, which is connected to the bottom wall of the injection chamber and can cover the first air vent; when the push rod assembly moves away from the bottom wall of the injection chamber, the air outside the syringe can enter the injection chamber through the first air vent; when the push rod assembly moves close to the bottom wall of the injection chamber, the first diaphragm can close the first air vent.

2. The thyroid fine needle aspiration tissue preparation syringe according to claim 1, characterized in that: The bottom wall of the injection cavity is provided with a protrusion, the protrusion covers the air inlet end of the connector, the protrusion is provided with a second vent, the injection cavity is connected to the inner cavity of the connector through the second vent, the thyroid fine needle aspiration tissue preparation syringe also includes a second diaphragm, the second diaphragm is located on the side of the protrusion facing the connector, and the second diaphragm is capable of covering the second vent; When the push rod assembly moves along the bottom wall away from the injection cavity, the second diaphragm can close the second vent hole; when the push rod assembly moves along the bottom wall close to the injection cavity, the air in the injection cavity can enter the inner cavity of the connector through the second vent hole.

3. The thyroid fine needle aspiration tissue preparation syringe according to claim 2, characterized in that: The push rod assembly includes a piston portion and a push rod portion. The piston portion is located in the injection cavity and abuts against the inner wall of the injection cavity. One end of the push rod portion is connected to the piston portion, and the other end of the push rod portion passes through the injection cavity. The piston portion is provided with a recess on the side facing the protrusion, and the recess is used to avoid the protrusion.

4. The thyroid fine needle aspiration tissue preparation syringe according to claim 2, characterized in that: A plurality of the second vent holes are arranged at intervals, and the number of the second membranes is the same as the number of the second vent holes, and the second membranes correspond to the plurality of the second vent holes in a one-to-one manner.

5. The thyroid fine needle aspiration tissue preparation syringe according to claim 1, characterized in that: There are multiple first vent holes, and the multiple first vent holes are spaced around the air inlet end of the connector. The number of the first diaphragms is the same as the number of the first vent holes, and they correspond one-to-one with the multiple first vent holes.

6. The thyroid fine needle aspiration tissue preparation syringe according to claim 1, characterized in that: The push rod assembly includes a piston part and a push rod part. The piston part is located in the injection cavity. One end of the push rod part is connected to the piston part. The other end of the push rod part passes through the injection cavity and is fixedly connected to a push plate. The upper end surface of the push plate is provided with an anti-slip structure.

7. The syringe for preparing thyroid fine needle aspiration tissue slices according to claim 6, characterized in that: The anti-slip structure includes a plurality of ribs arranged at intervals.

8. The thyroid fine needle aspiration tissue preparation syringe according to claim 1, characterized in that: A gusset plate is provided at the upper end of the needle cylinder, and the gusset plate extends along both sides of the radial direction of the needle cylinder.

9. The thyroid fine needle aspiration tissue preparation syringe according to claim 1, characterized in that: The thyroid fine needle aspiration tissue preparation syringe further comprises a needle, which is detachably connected to the connector.

10. The syringe for preparing thyroid fine needle aspiration tissue slices according to claim 1, characterized in that: The outer diameter of the connector gradually decreases in a direction away from the syringe.

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