A specimen retriever

Abstract

This utility model discloses a specimen extractor, belonging to the field of medical device technology. It includes a sampler housing and a clamping component rotatably mounted on the sampler housing. The sampler housing has an internal cavity. The specimen extractor, by pushing a handwheel, drives a screw and a slider to slide within the cavity of the sampler housing, moving a rectangular block and causing two connecting rods to rotate relative to each other, bringing the two grippers closer together to achieve closure and gripping the specimen. Rotating the screw drives the slider to slide away from the piston cylinder, and a multi-stage telescopic rod pulls the piston block to slide within the piston cylinder, creating a negative pressure chamber. A suction tube draws tissue fluid between the grippers and the specimen into the piston cylinder for collection, causing adhesion between the specimen and the grippers, thus facilitating successful specimen extraction. This method makes the specimen more stable during extraction, preventing slippage, and the entire operation is simple and quick.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a specimen extractor. Background Technology

[0002] Thoracic surgery is a medical specialty primarily involving the diagnosis, treatment, and surgery of diseases of the thoracic organs (including the esophagus, trachea, bronchi, lungs, mediastinum, and chest wall). It is an important branch of surgery, focusing on various conditions in the chest region, from congenital malformations to acquired diseases such as tumors, trauma, and infections. Currently, with the continuous development and advancement of clinical surgical techniques in thoracic surgery, surgical methods have shifted from traditional open surgery to endoscopic surgery. The application of thoracoscopic surgery has gradually matured and become widespread, allowing many surgical procedures to be performed minimally invasively. Therefore, specimen sampling devices are used to extract specimens.

[0003] A search revealed Chinese Patent Publication No. CN112998777B, which discloses a specimen retrieval device for thoracic surgery, relating to the field of medical device technology. The device includes an outer tube with a rotating structure connected to its right end. This rotating structure comprises a second bearing, a positioning hole, a Z-shaped plate, a third tension spring, and a second pin. The left side wall of the outer ring of the second bearing is fixedly connected to the right end of the outer tube. Positioning holes are evenly distributed on the right side wall of the second bearing. A Z-shaped plate is bolted to the right side wall of the inner ring of the second bearing. A third tension spring is fixedly connected to the top outer wall of the Z-shaped plate. A second pin is fixedly connected to the outer end of the third tension spring, and the inner end of the second pin passes through the third tension spring and the Z-shaped plate, inserting into the positioning hole. The rotating structure is connected to a spreading structure. The aforementioned patent has the following shortcomings: Existing specimen retrieval devices can only clamp the specimen during sampling. During sampling, some tissue fluid around the specimen can easily cause the clamped specimen to fall off, making it impossible to extract the surrounding tissue fluid, thus affecting the surgical process. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that specimens are easily slipped off due to surrounding tissue fluid during retrieval, making it impossible to extract the tissue fluid, and therefore a specimen extractor is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A specimen extractor includes a sampler housing and a clamping component rotatably mounted on the sampler housing. The sampler housing has an internal cavity and also includes a screw rotatably connected inside the sampler housing. A slider is threaded onto the screw. Two liquid extraction components that cooperate with the slider are provided inside the sampler housing. A liquid extraction tube is fixedly connected between the two liquid extraction components and the clamping component.

[0007] Preferably, the clamping component includes a mounting plate fixedly connected to one end of the sampler housing, and two grippers are hinged to the mounting plate, with connecting rods hinged to each of the two grippers.

[0008] Preferably, a rectangular block is fitted around the two connecting rods, and a through hole is provided on the rectangular block. The two connecting rods are rotatably connected to each other, and the two connecting rods are rotatably connected in the through hole of the rectangular block.

[0009] Preferably, a bearing seat is fixedly connected to one side of the rectangular block, both ends of the screw extend to the outside of the sampler housing, and one end of the screw is rotatably connected to the bearing seat.

[0010] Preferably, the liquid extraction assembly further includes two piston cylinders fixedly connected in the cavity of the sampler housing. A piston block is slidably connected in each of the two piston cylinders. A multi-stage telescopic rod is fixedly connected to each piston block. The ends of the two multi-stage telescopic rods away from the piston blocks are fixedly connected to a slider.

[0011] Preferably, both piston cylinders are fixedly connected to a liquid outlet pipe, and the end of the liquid extraction pipe away from the piston cylinder is fixedly connected to the clamp, and the liquid extraction pipe is designed as a flexible hose.

[0012] Preferably, a handwheel is fixedly connected to the end of the screw away from the bearing seat, an anti-slip sleeve is fixedly connected to the outside of the sampler housing, and hand grip rings are fixedly connected to both sides of the anti-slip sleeve.

[0013] Compared with the prior art, this utility model provides a specimen extractor with the following features:

[0014] Beneficial effects:

[0015] This specimen extractor works by driving a handwheel to move a screw and slider within the cavity of the sampler housing, causing a rectangular block to move. This, in turn, causes two connecting rods to rotate relative to each other, moving the two grippers apart and expanding outwards. To retrieve the specimen, the screw is first pulled outwards, causing the slider to slide simultaneously. The screw then moves the rectangular block, causing the two connecting rods to rotate and move closer together, closing and gripping the specimen. The doctor then rotates the screw to move the slider away from the piston cylinder, which in turn pulls the piston block within the piston cylinder via a multi-stage telescopic rod. At this point, the valve in the discharge tube closes, creating a negative pressure chamber within the piston cylinder. The fluid between the grippers and the specimen is then drawn into the piston cylinder through the suction tube and collected, ensuring adhesion between the specimen and the grippers and facilitating successful specimen retrieval. This method ensures greater stability during retrieval, preventing the specimen from slipping. The entire operation is simple and quick. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a specimen extractor proposed in this utility model;

[0017] Figure 2 This is a front view schematic diagram of a specimen extractor proposed in this utility model;

[0018] Figure 3 This is a front cross-sectional view of a specimen extractor proposed in this utility model;

[0019] Figure 4 The present utility model proposes Figure 3 A schematic diagram of the structure of part A;

[0020] Figure 5 The present utility model proposes Figure 3 A structural diagram of section B;

[0021] Figure 6 This is a cross-sectional structural diagram of a specimen extractor proposed in this utility model;

[0022] Figure 7 The present utility model proposes Figure 6 A structural diagram of section C;

[0023] Figure 8 This is a schematic diagram of the internal structure of the sampler housing in a specimen extractor proposed in this utility model;

[0024] Figure 9 The present utility model proposes Figure 8 A schematic diagram of the structure of part D.

[0025] In the diagram: 1. Sampler housing; 2. Clamping component; 201. Mounting plate; 202. Gripper; 203. Connecting rod; 204. Rectangular block; 205. Bearing seat; 3. Screw; 4. Slider; 5. Liquid extraction assembly; 501. Liquid extraction tube; 502. Piston cylinder; 503. Piston block; 504. Multi-stage telescopic rod; 505. Liquid outlet tube; 6. Handwheel; 7. Anti-slip sleeve; 8. Hand grip ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Reference Figures 1-9 A specimen extractor includes a sampler housing 1 and a clamping component 2 rotatably mounted on the sampler housing 1. The sampler housing 1 has an internal cavity and includes a screw 3 rotatably connected inside the sampler housing 1. A slider 4 is threaded onto the screw 3. Two liquid extraction components 5 are provided inside the sampler housing 1 to cooperate with the slider 4. A liquid extraction tube 501 is fixedly connected between the two liquid extraction components 5 and the clamping component 2. By rotating the screw 3, the slider 4 can slide within the cavity inside the sampler housing 1. Through the sliding of the slider 4 and the cooperation between it and the liquid extraction components 5, the liquid extraction tube 501 can extract tissue fluid around the specimen from the inside of the clamping component 2, which helps to improve the clamping effect of the clamping component 2 on the specimen and prevents the specimen from falling off during extraction.

[0029] The clamping component 2 includes a mounting plate 201 fixedly connected to one end of the sampler housing 1. Two grippers 202 are hinged to the mounting plate 201, and each gripper 202 is hinged to a connecting rod 203.

[0030] A rectangular block 204 is fitted around the two connecting rods 203. The rectangular block 204 has a through hole. The two connecting rods 203 are rotatably connected to each other and are rotatably connected in the through hole of the rectangular block 204. By sliding the rectangular block 204, the two connecting rods 203 can rotate relative to each other, which drives the two grippers 202 to rotate, thereby achieving the clamping and release of the specimen.

[0031] A bearing seat 205 is fixedly connected to one side of the rectangular block 204. Both ends of the screw 3 extend to the outside of the sampler housing 1. One end of the screw 3 is rotatably connected inside the bearing seat 205. When performing a sample sampling operation, the doctor pushes the screw 3 to move the rectangular block 204 away from the sampler housing 1, which causes the two connecting rods 203 to move the two grippers 202 away from each other and open. Conversely, by pulling the screw 3, the rectangular block 204 can be moved, causing the two grippers 202 to move closer to each other and close, thus gripping the sample. The bearing seat 205 facilitates the rotation of the screw 3 and can also be pulled to move the rectangular block 204.

[0032] The liquid extraction assembly 5 also includes two piston cylinders 502 fixedly connected inside the cavity of the sampler housing 1. A piston block 503 is slidably connected inside each of the two piston cylinders 502. A multi-stage telescopic rod 504 is fixedly connected to each piston block 503. The ends of the two multi-stage telescopic rods 504 away from the piston block 503 are fixedly connected to the slider 4. When the two grippers 202 are opened outward, the screw 3 and the slider 4 are pushed together by the multi-stage telescopic rod 504. The sliding of the screw 3 and the slider 4 will not be affected by the piston cylinders 502, which can accommodate specimens at deeper depths.

[0033] Both piston cylinders 502 are fixedly connected to a liquid outlet pipe 505. The end of the liquid extraction pipe 501 away from the piston cylinder 502 is fixedly connected to the gripper 202. The liquid extraction pipe 501 is a flexible hose, which makes it easier for the gripper 202 to open and close. It should be noted that both the liquid extraction pipe 501 and the liquid outlet pipe 505 are equipped with a one-way valve.

[0034] A handwheel 6 is fixedly connected to the end of the screw 3 away from the bearing seat 205. An anti-slip sleeve 7 is fixedly connected to the outside of the sampler housing 1. Hand grip rings 8 are fixedly connected to both sides of the anti-slip sleeve 7. The handwheel 6 makes it easier for doctors to turn the screw 3. By inserting their fingers into the hand grip rings 8 and using the anti-slip sleeve 7, doctors can use the product more easily and operate it more conveniently.

[0035] In this invention, when using the sampler to retrieve a specimen, the doctor grips the handle 8 with one hand and first pushes the handwheel 6 to drive the screw 3 and slider 4 to slide within the cavity of the sampler housing 1, causing the rectangular block 204 to move. Then, the two connecting rods 203 rotate relative to each other, causing the two grippers 202 to move away from each other and expand outwards. Simultaneously, the slider 4 slides into the piston cylinder 502 by pushing the multi-stage telescopic rod 504. At this time, the one-way valve in the suction tube 501 prevents air from being blown into the patient's wound. When it is necessary to retrieve the specimen, the doctor first pulls the screw 3 outwards, causing the slider 4 to slide simultaneously. The screw 3 then moves the rectangular block... Sliding 204 causes the two connecting rods 203 to rotate and move closer together, closing the grip and grasping the specimen. Then, the doctor rotates the screw 3 to drive the slider 4 to slide away from the piston cylinder 502. This, in turn, pulls the piston block 503 to slide inside the piston cylinder 502 via the multi-stage telescopic rod 504. At this time, the valve in the liquid outlet pipe 505 closes, creating a negative pressure chamber inside the piston cylinder 502. The liquid suction pipe 501 then draws the tissue fluid between the gripper 202 and the specimen into the piston cylinder 502 for collection, causing the specimen to adhere to the gripper 202, thus completing the smooth removal of the specimen. This makes the specimen more stable during the removal process and prevents it from slipping.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A specimen extractor, comprising: The sampler housing (1) and the clamping member (2) rotatably mounted on the sampler housing (1) are characterized in that the sampler housing (1) has an internal cavity and further includes: A screw (3) is rotatably connected inside the sampler housing (1). A slider (4) is threadedly connected to the screw (3). Two liquid extraction components (5) that cooperate with the slider (4) are provided inside the sampler housing (1). A liquid extraction tube (501) is fixedly connected between the two liquid extraction components (5) and the clamping member (2).

2. A specimen retriever according to claim 1, wherein, The clamping component (2) includes a mounting plate (201) fixedly connected to one end of the sampler housing (1). Two grippers (202) are hinged on the mounting plate (201), and each of the two grippers (202) is hinged with a connecting rod (203).

3. A specimen retriever according to claim 2, wherein, A rectangular block (204) is fitted around the two connecting rods (203). The rectangular block (204) has a through hole. The two connecting rods (203) are rotatably connected to each other, and the two connecting rods (203) are rotatably connected in the through hole of the rectangular block (204).

4. A specimen retriever according to claim 3, wherein, A bearing seat (205) is fixedly connected to one side of the rectangular block (204), and both ends of the screw (3) extend to the outside of the sampler housing (1). One end of the screw (3) is rotatably connected inside the bearing seat (205).

5. The specimen retriever of claim 1, wherein, The liquid extraction assembly (5) further includes two piston cylinders (502) fixedly connected in the cavity of the sampler housing (1). A piston block (503) is slidably connected in each of the two piston cylinders (502). A multi-stage telescopic rod (504) is fixedly connected to each piston block (503). The end of each of the two multi-stage telescopic rods (504) away from the piston block (503) is fixedly connected to the slider (4).

6. A specimen retriever as in claim 5, wherein, Both piston cylinders (502) are fixedly connected to a liquid outlet pipe (505), and the end of the liquid extraction pipe (501) away from the piston cylinder (502) is fixedly connected to the clamp (202). The liquid extraction pipe (501) is a flexible tube design.

7. The specimen retriever of claim 1, wherein, A handwheel (6) is fixedly connected to one end of the screw (3) away from the bearing seat (205), and an anti-slip sleeve (7) is fixedly connected to the outside of the sampler housing (1). Hand grip rings (8) are fixedly connected to both sides of the anti-slip sleeve (7).

Images