Thyroid fine needle aspiration biopsy equipment

Abstract

The thyroid fine needle aspiration biopsy equipment comprises a needle cylinder, a needle head and a sampling piston, a connecting hose is arranged on the needle head, a rigid fixing sleeve in sliding connection is arranged on the outer side of the needle head, a detachable end cover is arranged at the tail end of the needle cylinder, and the sampling piston is completely inserted into the needle cylinder and is in sliding connection with the needle cylinder. A sliding groove penetrating through the needle cylinder is formed in the front end of the needle cylinder, a pulling plate is arranged on the side face of the piston, a through hole opposite to the sliding groove in position is formed in the front end face of the pulling plate, the needle head comprises a puncture part and a fixing part, one end of the connecting hose is fixedly connected with the puncture part, and the other end of the connecting hose is fixedly connected with the fixing part. The thyroid biopsy sampling device has the advantages of being convenient and stable to operate, and solves the problems that in the prior art, thyroid is prone to shaking in the biopsy sampling process, discomfort of a patient is increased, and detection accuracy is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture equipment, in particular to a thyroid fine needle puncture biopsy device. Background Art

[0002] Thyroid fine needle aspiration biopsy is a common clinical diagnostic method used to evaluate the nature of thyroid nodules, including the differentiation of benign and malignant nodules. Traditional thyroid puncture usually uses a syringe to take samples.

[0003] The needle of the syringe adopts a rigid connection method, that is, the needle is directly connected to the syringe. The slight shaking of the syringe can be easily transmitted to the needle, causing the puncture point to shift, increasing patient discomfort and even affecting the accuracy of pathological diagnosis. Secondly, most of the existing syringes are push-type structures, which is convenient for one-handed push injection, but inconvenient for one-handed suction operation, which increases the probability of syringe shaking during suction. Therefore, a thyroid fine needle puncture biopsy device is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a thyroid fine needle aspiration biopsy device, which has the advantages of convenient and stable operation, and solves the problem in the prior art that the thyroid gland is prone to shaking during the biopsy sampling process, which increases patient discomfort and affects the detection accuracy.

[0005] To achieve the above object, the utility model provides the following technical solutions: a thyroid fine needle aspiration biopsy device, comprising a syringe, a needle and a sampling piston, the needle is provided with a connecting hose, the outer side of the needle is provided with a slidingly connected rigid fixing sleeve, and the end of the syringe is provided with a detachable end cap;

[0006] The sampling piston is completely inserted into the syringe and slidably connected thereto. The front end of the syringe is provided with a slide groove penetrating the syringe. A pull plate is provided on the side of the piston. The front end surface of the pull plate is provided with a through hole opposite to the position of the slide groove.

[0007] As a preferred embodiment of the thyroid fine needle aspiration biopsy device of the utility model, the needle head includes a puncture part and a fixing part, one end of the connecting hose is fixedly connected to the puncture part, and the other end is fixedly connected to the fixing part.

[0008] As a preferred embodiment of a thyroid fine needle aspiration biopsy device of the utility model, the rigid fixing sleeve includes a connecting sleeve and a positioning sleeve, the length of the connecting sleeve is greater than the length of the connecting hose, the inner diameter of the connecting sleeve is equal to the outer diameter of the puncture part, and the positioning sleeve can be interference connected with the fixing part.

[0009] As a preferred embodiment of the thyroid fine needle aspiration biopsy device of the utility model, a connecting rod is provided on the lower end surface of the rigid fixing sleeve, and a pull ring is provided on the lower end of the connecting rod.

[0010] As a preferred thyroid fine needle aspiration biopsy device of the utility model, a slide rail is provided at the bottom of the syringe, a spring is provided in the slide rail, a slider is provided on the top of the pull ring, and the pull ring and the syringe are elastically slidably connected through the slider, the slide rail and the spring.

[0011] As a preferred embodiment of the thyroid fine needle aspiration biopsy device of the utility model, a guard plate is provided at the edge of the through hole, and an arc-shaped notch is provided at the side of the end cover.

[0012] As a preferred embodiment of the thyroid fine needle aspiration biopsy device of the utility model, a graduated groove is provided on the side of the syringe.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model introduces a connecting hose between the puncture part and the fixing part to achieve a flexible connection between the puncture part and the syringe, so that the needle can be kept stable when the device punctures into the thyroid tissue, avoiding the syringe shaking problem that may be caused by the traditional rigid connection, thereby reducing the patient's pain and ensuring the accuracy of the sampling position. Before puncture, the flexible connection is converted into a rigid connection by putting a rigid fixing sleeve on the outside of the connecting hose, ensuring the depth control and stability of the puncture and improving the accuracy of the puncture.

[0015] 2. The utility model adopts a special design of the sampling piston and the syringe, so that the user's index finger can pass through the slide groove and the through hole to pull the piston to move, and the operator can control the suction action with one hand, which greatly simplifies the sampling process and improves the convenience and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 It is a front cross-sectional view of the utility model;

[0020] Figure 5 For the utility model Figure 4 Enlarged view of point B in the middle;

[0021] Figure 6 For the utility model Figure 4 Enlarged view of center C.

[0022] In the figure: 1. syringe; 101. slide groove; 102. slide rail; 103. spring; 104. scale groove; 2. sampling piston; 201. pull plate; 202. through hole; 203. guard plate; 3. needle; 301. puncture part; 302. fixing part; 303. connecting hose; 4. end cover; 5. rigid fixing sleeve; 501. connecting sleeve; 502. positioning sleeve; 503. connecting rod; 504. pull ring; 505. slider. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 6 A thyroid fine needle aspiration biopsy device comprises a syringe 1, a needle 3 and a sampling piston 2, the needle 3 is provided with a connecting hose 303, the outer side of the needle 3 is provided with a slidingly connected rigid fixing sleeve 5, and the end of the syringe 1 is provided with a detachable end cap 4;

[0024] The sampling piston 2 is fully inserted into the syringe 1 and slidably connected thereto. The front end of the syringe 1 is provided with a slide groove 101 penetrating the syringe 1 . A pull plate 201 is provided on the side of the piston. The front end surface of the pull plate 201 is provided with a through hole 202 opposite to the position of the slide groove 101 .

[0025] Furthermore, the needle 3 includes a puncture portion 301 and a fixing portion 302 . One end of the connecting hose 303 is fixedly connected to the puncture portion 301 , and the other end is fixedly connected to the fixing portion 302 .

[0026] By providing a connecting hose 303 between the puncture part 301 and the fixing part 302 instead of the traditional rigid connection, it is avoided that after the puncture part 301 is inserted into the thyroid gland, during the sampling process, the syringe 1 shakes and causes the needle 3 to shake, causing pain to the patient or changing the sampling range.

[0027] Furthermore, the rigid fixing sleeve 5 includes a connecting sleeve 501 and a positioning sleeve 502 . The length of the connecting sleeve 501 is greater than the length of the connecting hose 303 . The inner diameter of the connecting sleeve 501 is equal to the outer diameter of the puncture portion 301 . The positioning sleeve 502 can be interference-connected with the fixing portion 302 .

[0028] When the rigid fixing sleeve 5 is sleeved on the outside of the connecting hose 303, the two ends of the rigid fixing sleeve 5 constrain the puncture part 301 and the fixing part 302, so that during the puncture process, the puncture part 301 and the fixing part 302 maintain a rigid connection, thereby ensuring the accuracy of the puncture, and the positioning sleeve 502 structure that can be interference-connected, so that after the positioning sleeve 502 is stuck on the outside of the fixing part 302, the rigid fixing sleeve 5 will not slip off easily again.

[0029] Furthermore, a connecting rod 503 is disposed on the lower end surface of the rigid fixing sleeve 5 , and a pull ring 504 is disposed on the lower end of the connecting rod 503 .

[0030] The pull ring 504 and the connecting rod 503 cooperate with each other, so that after the puncture is completed, the middle finger can be used to push the pull ring 504 to push the rigid fixing sleeve 5 away from the outside of the connecting hose 303, so that the connection between the puncture part 301 and the fixing part 302 is changed from a rigid connection to a flexible connection, thereby avoiding the vibration of the syringe 1 being transmitted to the puncture part 301 during the sampling process.

[0031] Furthermore, a slide rail 102 is provided at the bottom of the syringe 1, a spring 103 is provided inside the slide rail 102, a slider 505 is provided on the top of the pull ring 504, and the pull ring 504 and the syringe 1 are elastically slidably connected through the slider 505, the slide rail 102 and the spring 103.

[0032] The design of the slide rail 102 and the slider 505 constrains the sliding direction of the pull ring 504, and the slider 505 is maintained at the end of the slide rail 102 under the reset action of the spring 103, so that the rigid fixing sleeve 5 can be kept on the outside of the connecting hose 303 during puncture, avoiding the rigid fixing sleeve 5 from sliding during the puncture process and causing puncture failure.

[0033] Furthermore, a guard plate 203 is provided at the edge of the through hole 202 , and an arc-shaped notch is provided on the side of the end cover 4 .

[0034] The guard plate 203 increases the force-bearing area, thereby reducing the pressure on the fingers during suction and improving the comfort. An arc-shaped groove is set on the side of the end cover 4 to make the end cover 4 fit more closely with the base of the palm, thereby preventing the device from slipping during the sampling process.

[0035] Furthermore, a scale groove 104 is provided on the side of the syringe 1 .

[0036] The graduated groove 104 facilitates observation of the volume currently sampled.

[0037] When the device is in use, initially, the rigid fixing sleeve 5 is sleeved on the outside of the connecting hose 303 to ensure rigid support during puncture. Under ultrasonic guidance, the operator holds the syringe 1, clamps the end cover 4 at the base of the thumb, and accurately aligns the puncture part 301 with the target position of the thyroid gland for precise puncture. After the puncture is completed, the pull ring 504 on the rigid fixing sleeve 5 is pulled by the middle finger to remove the rigid fixing sleeve 5 from the connecting hose 303, thereby converting the puncture part 301 and the fixing part 302 into a soft connection. The operator passes the index finger through the slide groove 101 and the through hole 202, gently pulls the pull plate 201 of the sampling piston 2, and starts to aspirate the sample. After the sampling is completed, the needle 3 is smoothly withdrawn.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thyroid fine needle aspiration biopsy device, comprising a syringe (1), a needle (3) and a sampling piston (2), characterized in that: The needle (3) is provided with a connecting hose (303), the outer side of the needle (3) is provided with a slidingly connected rigid fixing sleeve (5), and the end of the syringe (1) is provided with a detachable end cap (4); The sampling piston (2) is completely inserted into the syringe (1) and slidably connected thereto; the front end of the syringe (1) is provided with a slide groove (101) penetrating the syringe (1); a pull plate (201) is provided on the side of the piston; and the front end surface of the pull plate (201) is provided with a through hole (202) opposite to the position of the slide groove (101).

2. A thyroid fine needle aspiration biopsy device as claimed in claim 1, characterized in that: The needle (3) comprises a puncture portion (301) and a fixing portion (302); one end of the connecting hose (303) is fixedly connected to the puncture portion (301), and the other end is fixedly connected to the fixing portion (302).

3. A thyroid fine needle aspiration biopsy device as claimed in claim 2, characterized in that: The rigid fixing sleeve (5) comprises a connecting sleeve (501) and a positioning sleeve (502), and the inner diameter of the connecting sleeve (501) is equal to the outer diameter of the puncture portion (301).

4. A thyroid fine needle aspiration biopsy device as claimed in claim 1, characterized in that: The lower end surface of the rigid fixing sleeve (5) is provided with a connecting rod (503), and the lower end of the connecting rod (503) is provided with a pull ring (504).

5. A thyroid fine needle aspiration biopsy device as claimed in claim 4, characterized in that: A slide rail (102) is provided at the bottom of the syringe (1), a spring (103) is provided inside the slide rail (102), a slider (505) is provided at the top of the pull ring (504), and the pull ring (504) and the syringe (1) are elastically slidably connected through the slider (505), the slide rail (102) and the spring (103).

6. The thyroid fine needle aspiration biopsy device according to claim 1, characterized in that: A guard plate (203) is provided at the edge of the through hole (202), and an arc-shaped notch is provided on the side of the end cover (4).

7. The thyroid fine needle aspiration biopsy device according to claim 1, characterized in that: The side of the syringe (1) is provided with a scale groove (104).

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