Needle biopsy device

Abstract

The utility model discloses a needle biopsy device, and relates to the technical field of needle biopsy devices, the needle biopsy device comprises a sleeve, the main body of the sleeve is of an internal hollow structure, the front end of the sleeve is provided with a through groove, an observation groove is communicated with a cavity arranged in the sleeve, and the through groove is communicated with the cavity. According to the utility model, the sampling tube with a split structure, the guide post and the guide ring are arranged, so that when the sampling tube is connected with the limiting rod, the rotary connection can be realized by utilizing the guide post and the guide ring which are fixedly connected to the top end surface of the sampling tube, and the sampling tube is connected with the limiting rod through the gasket which is fixedly connected to the bottom end surface of the sleeve; when the cannula is placed above the skin, needing to be punctured, of a patient, flexible supporting operation can be conducted on the cannula through the arrangement of the gasket fixedly connected to the bottom end face of the cannula, and the situation that when the cannula is used, the skin hematocele is caused by long-time pressing of the cannula can be avoided.

Description

Technical Field

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

[0002] A puncture biopsy is a multidisciplinary diagnostic procedure that uses physical examination, ultrasound, CT, magnetic resonance imaging and other examination methods to locate the lesion, and uses a puncture needle to obtain part of the human body's diseased tissue for pathological diagnosis. It is widely used clinically and can make a clear diagnosis of space-occupying lesions of multiple organs, bones and soft tissues. The existing patent is a biopsy puncture device, and the patent publication number is a biopsy puncture device comprising: a bottom shell, a positioning cavity is provided at the bottom of the bottom shell, and a card slot connected to the inner cavity of the positioning cavity is provided on both the left and right sides of the bottom end of the inner cavity of the bottom shell, and a slide groove is provided on both the left and right sides of the bottom end of the inner cavity of the bottom shell along the front and rear directions, and bolt holes are provided at the four corners of the top of the bottom shell; a guide rod, the front and rear ends of the guide rod are respectively arranged on the front and rear sides of the inner cavity of the slide groove; a positioning plate, the positioning plate is arranged on the front side of the bottom end of the inner cavity of the bottom shell; a fixing mechanism, the fixing mechanism is arranged in the inner cavity of the positioning cavity; a firing mechanism, the firing mechanism is arranged in the inner cavity of the bottom shell; a sleeve, the rear end of the sleeve is embedded in the inner cavity of the bottom shell, the rear end of the sleeve is adapted to be plugged into the inner cavity of the positioning plate, and the front end of the sleeve extends out of the inner cavity of the bottom shell. After the biopsy sampling is performed, the sampling needle of the device can be replaced, thereby reducing the cost of biopsy puncture sampling, avoiding economic losses, and facilitating use.

[0003] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: although they can be guided by a guide rod during use, due to the lack of an effective slow-moving propulsion structure, when manually pushing for puncture, it is easy to miss the normal puncture position due to excessive pushing force, which will cause harm to the patient. Therefore, we propose a puncture biopsy device to solve the above-mentioned problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the present invention provides a puncture biopsy device that solves the problem that due to the lack of an effective slow-propelling structure, it is easy to miss the normal puncture position due to excessive pushing force during manual puncture, which may cause harm to the patient.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a puncture biopsy device, including a cannula, the main body of the cannula is an internal hollow structure, and a through groove is provided at the front end of the cannula, which is an observation groove, and the observation groove is connected to the cavity provided in the cannula, and a connecting plate is fixedly connected to the outside of the cannula, the connecting plate and the cannula are vertically arranged, and there are two connecting plates in total, and the two connecting plates and the cannula together constitute a connecting structure, and a through hole is provided inside the connecting plate, which is a connecting hole.

[0006] Preferably, the connecting plate and the connecting hole together constitute a holding structure of the sleeve, and a washer is fixedly connected to the bottom end surface of the sleeve, the washer is an annular structure, and the washer and the sleeve together constitute a supporting structure.

[0007] Preferably, an annular groove is provided on the bottom end surface of the sleeve, which is a mounting groove, and the mounting groove and the sleeve together constitute a connecting structure. A screw hole is provided on the top end of the sleeve, and a limiting rod is screwed inside the screw hole, and the main body of the limiting rod is a screw rod structure.

[0008] Preferably, an annular groove is provided at the bottom end of the limiting rod, and the annular groove is a limiting groove. The limiting groove and the limiting rod together form a connecting structure, and a knob is fixedly connected to the top end surface of the limiting rod.

[0009] Preferably, a puncture tube is inserted into the interior of the mounting groove, and the bottom end of the puncture tube is a sharp structure, and a sampling tube is inserted into the inner side of the puncture tube, and a notch is provided on the outer circumference of the sampling tube, and a scale is provided inside the notch, and the scale and the sampling tube together constitute a sampling structure.

[0010] Preferably, a needle is fixedly connected to the bottom end surface of the sampling tube, and the needle is used to puncture the skin, and a groove is provided on the outer peripheral surface of the needle, which is a sampling groove. The sampling groove and the sampling tube together constitute a sampling structure.

[0011] Preferably, a guide column is fixedly connected to the top surface of the sampling tube, and the main body of the guide column is a cylindrical structure. The diameter of the guide column is smaller than the diameter of the sampling tube. A guide ring is fixedly connected to the outer circumference of the guide column, and the main body of the guide ring is an annular structure. The guide column is rotatably connected to the internal position of the limit groove through the guide ring fixedly connected to its outer circumference. Beneficial effects

[0012] The present invention provides a puncture biopsy device. Compared with the prior art, it has the following beneficial effects:

[0013] The puncture biopsy device is provided with a sampling tube, a guide post and a guide ring of a split structure, so that when the sampling tube is connected to the limiting rod, a rotational connection can be achieved by utilizing the guide post and the guide ring fixedly connected to the top surface of the sampling tube. When the limiting rod installed in the sleeve rotates, the sampling tube can be pushed synchronously to achieve an efficient biopsy sampling operation using the sampling groove provided on the outer peripheral surface of the sampling tube.

[0014] The puncture biopsy device is provided with a gasket fixedly connected to the bottom end surface of the cannula, so that when the cannula is placed above the patient's skin where puncture is required, the gasket fixedly connected to the bottom end surface of the cannula can be used to flexibly support the cannula, so that when it is used, it can avoid the situation where the cannula is pressed for a long time and causes blood accumulation on the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cutaway structure of the puncture biopsy device of the present invention, viewed from the side.

[0016] Figure 2 This is a schematic diagram of the front and side structure of the puncture biopsy device of the present invention.

[0017] Figure 3 This is a schematic diagram of the cutaway front structure of the puncture biopsy device of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the puncture biopsy device of the present invention from a top-down side view.

[0019] Figure 5 This is a schematic diagram of the left side structure of the puncture biopsy device of the present invention.

[0020] Figure 6 This is a schematic diagram of the top view of the puncture biopsy device of the present invention.

[0021] In the figure: 1. cannula; 101. observation slot; 102. connecting plate; 103. connecting hole; 2. gasket; 201. mounting slot; 202. limiting rod; 203. limiting slot; 204. knob; 3. puncture tube; 301. sampling tube; 302. scale; 303. needle; 304. sampling slot; 305. guide column; 306. guide ring. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-6 The utility model provides a technical solution: a puncture biopsy device, including a cannula 1, the main body of the cannula 1 is an internal hollow structure, and a through slot is opened at the front end of the cannula 1, the through slot is an observation slot 101, and the observation slot 101 is connected to the cavity opened in the cannula 1, the outer side of the cannula 1 is fixedly connected with a connecting plate 102, the connecting plate 102 and the cannula 1 are vertically arranged, and there are two connecting plates 102, and the two connecting plates 102 and the cannula 1 together form a connecting structure, and a through hole is opened inside the connecting plate 102, which is a connecting hole 103;

[0024] By providing an observation slot 101 at the front end of the sleeve 1 , the current scale 302 can be observed when the sleeve 1 is in use.

[0025] See Figure 1 、 Figure 2 The connecting plate 102 and the connecting hole 103 together constitute the holding structure of the sleeve 1, and the bottom end surface of the sleeve 1 is fixedly connected with a washer 2, which is an annular structure. The washer 2 and the sleeve 1 together constitute a supporting structure;

[0026] The gasket 2 is fixedly connected to the bottom end surface of the sleeve 1, so that when the sleeve 1 is placed on the patient's skin, the gasket 2 can provide flexible support.

[0027] See Figure 4 、 Figure 5 An annular groove is provided on the bottom end surface of the sleeve 1, which is a mounting groove 201, and the mounting groove 201 and the sleeve 1 together form a connection structure. A screw hole is provided on the top of the sleeve 1, and a limit rod 202 is screwed inside the screw hole. The main body of the limit rod 202 is a screw rod structure;

[0028] By screwing the limiting rod 202 inside the sleeve 1, the limiting rod 202 can be slowly advanced when in use.

[0029] See Figure 1 、 Figure 2The bottom end of the limiting rod 202 is provided with an annular groove, which is the limiting groove 203. The limiting groove 203 and the limiting rod 202 together form a connection structure, and the top surface of the limiting rod 202 is fixedly connected with a knob 204;

[0030] By fixing the knob 204 on the top surface of the limiting rod 202 , the limiting rod 202 can be more conveniently held by the operator during use.

[0031] See Figure 3 、 Figure 6 The puncture tube 3 is inserted into the interior of the mounting groove 201, and the bottom end of the puncture tube 3 is a sharp structure, and the sampling tube 301 is inserted into the inner side of the puncture tube 3. A notch is provided on the outer circumference of the sampling tube 301, and a scale 302 is provided inside the notch. The scale 302 and the sampling tube 301 together constitute a sampling structure;

[0032] Since the scale 302 is provided on the outer peripheral surface of the sampling tube 301 , an external operator can observe the insertion depth of the sampling tube 301 by observing the scale 302 .

[0033] See Figure 1 、 Figure 2 A needle 303 is fixedly connected to the bottom end surface of the sampling tube 301, and the needle 303 is used to puncture the skin. A notch is provided on the outer circumference of the needle 303, which is a sampling groove 304. The sampling groove 304 and the sampling tube 301 together constitute a sampling structure.

[0034] The needle 303 is fixedly connected to the bottom end surface of the sampling tube 301 , so that when the sampling tube 301 is inserted, it can be guided by the needle 303 .

[0035] See Figure 4 、 Figure 6 A guide post 305 is fixedly connected to the top surface of the sampling tube 301. The main body of the guide post 305 is a cylindrical structure. The diameter of the guide post 305 is smaller than the diameter of the sampling tube 301. A guide ring 306 is fixedly connected to the outer circumference of the guide post 305. The main body of the guide ring 306 is an annular structure. The guide post 305 is rotatably connected to the inner position of the limiting groove 203 through the guide ring 306 fixedly connected to the outer circumference of the guide post 305.

[0036] By fixing the guide post 305 on the top surface of the sampling tube 301 , the sampling tube 301 can be quickly assembled by connecting it with the external limiting rod 202 when in use.

[0037] During operation, when performing a puncture biopsy, the puncture tube 3 can be inserted into the part of the patient where the puncture is required for positioning, and then the puncture tube 3 can be snapped into the inside of the mounting groove 201 provided on the bottom end surface of the sleeve 1 for assembly. After the assembly is completed, the device can be held by holding the two connecting plates 102 fixedly connected to the outside of the sleeve 1, and the knob 204 fixedly connected to the top surface of the limit rod 202 can be rotated by holding it.

[0038] When the knob 204 is rotated, the limiting rod 202 can be driven to rotate synchronously, and the sampling tube 301 can be pushed by screwing the limiting rod 202 and the sleeve 1. The needle 303 fixedly connected to the bottom end surface of the sampling tube 301 is inserted into the internal position of the patient's skin, and guided by the puncture tube 3, and the sampling groove 304 provided on the outer peripheral surface of the sampling tube 301 can be used to accurately sample the affected area.

[0039] In summary, the device can achieve rapid and slow advancement operation by providing the limit rod 202 and the casing 1.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A puncture biopsy device, comprising a cannula (1), characterized in that: The main body of the sleeve (1) is an internal hollow structure, and a through slot is provided at the front end of the sleeve (1), the through slot is an observation slot (101), and the observation slot (101) is connected to the cavity provided in the sleeve (1), and a connecting plate (102) is fixedly connected to the outside of the sleeve (1), the connecting plate (102) and the sleeve (1) are vertically arranged, and there are two connecting plates (102), and the two connecting plates (102) and the sleeve (1) together form a connecting structure, and a through hole is provided inside the connecting plate (102), and the through hole is a connecting hole (103). The connecting plate (102) and the connecting hole (103) together form a holding structure of the sleeve (1), and a washer (2) is fixedly connected to the bottom end surface of the sleeve (1), the washer (2) is an annular structure, and the washer (2) and the sleeve (1) together form a supporting structure, an annular groove is provided on the bottom end surface of the sleeve (1), the annular groove is a mounting groove (201), and the mounting groove (201) and the sleeve (1) together form a connecting structure, a screw hole is provided at the top end of the sleeve (1), and a limiting rod (202) is screwed inside the screw hole, and the main body of the limiting rod (202) is a screw rod structure.

2. A puncture biopsy device according to claim 1, characterized in that: The bottom end of the limiting rod (202) is provided with an annular groove, which is the limiting groove (203). The limiting groove (203) and the limiting rod (202) together form a connection structure, and a knob (204) is fixedly connected to the top surface of the limiting rod (202).

3. A puncture biopsy device according to claim 2, characterized in that: A puncture tube (3) is inserted into the interior of the installation groove (201), and the bottom end of the puncture tube (3) is a sharp structure. A sampling tube (301) is inserted into the inner side of the puncture tube (3), and a notch is provided on the outer peripheral surface of the sampling tube (301). A scale (302) is provided inside the notch. The scale (302) and the sampling tube (301) together constitute a sampling structure.

4. A puncture biopsy device according to claim 3, characterized in that: A needle (303) is fixedly connected to the bottom end surface of the sampling tube (301), and the needle (303) is used to puncture the skin. A notch is provided on the outer peripheral surface of the needle (303), and the notch is a sampling groove (304). The sampling groove (304) and the sampling tube (301) together form a sampling structure.

5. The puncture biopsy device according to claim 4, characterized in that: A guide post (305) is fixedly connected to the top surface of the sampling tube (301), and the main body of the guide post (305) is a cylindrical structure. The diameter of the guide post (305) is smaller than the diameter of the sampling tube (301). A guide ring (306) is fixedly connected to the outer circumference of the guide post (305), and the main body of the guide ring (306) is an annular structure. The guide post (305) is rotatably connected to the inner position of the limiting groove (203) through the guide ring (306) fixedly connected to the outer circumference of the guide post (305).

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