A gastroenterology ultrasonic endoscopic puncture biopsy needle

Abstract

The present invention relates to a gastroenterology ultrasonic endoscopic puncture biopsy needle, comprising a needle tip and a needle body. The needle body adopts a hollow cylindrical structure, with an open slot provided at the front end of the needle body, and side blades provided on the two axial surfaces of the open slot. The needle tip is composed of three or four pointed bodies, with a concave arc-shaped leading edge provided between each two adjacent pointed bodies. The open end of the open slot is located between two of the pointed bodies, and there is no leading edge between the two pointed bodies. The base of each pointed body has a micro-deformation structure. The puncture biopsy needle adopts a needle tip structure with micro-deformation, which can accommodate larger tissues and increase the friction force after the sampled tissue strip is squeezed, thereby achieving the purpose of successful one-time sampling.

Description

Technical Field

[0001] The invention relates to a gastroenterology ultrasonic endoscope puncture biopsy needle, belonging to the technical field of medical equipment. Background Art

[0002] Endoscopic ultrasound testing is the primary diagnostic tool in gastroenterology. Endoscopic ultrasound is used to detect diseased tissue within the digestive tract and accurately diagnose the condition by extracting tissue samples for testing. When a biopsy needle is inserted into a catheter to obtain a sample, the tissue sample extracted by existing biopsy needles is incomplete, not a complete tissue strip. This drawback necessitates repeated punctures. Even if sufficient tissue samples are obtained, the fragmented samples affect the accuracy of the test and the progress of the diagnosis. This process also causes pain to the patient and poses a risk of infection. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a gastroenterology ultrasonic endoscopic puncture biopsy needle, which adopts a needle tip structure with micro-deformation to achieve the purpose of encompassing larger tissues and increasing the friction force after the sampling tissue strip is squeezed, thereby achieving the purpose of successful one-time sampling.

[0004] In order to solve the above problems, the specific technical solutions of the present invention are as follows: A gastroenterology ultrasonic endoscopic puncture biopsy needle comprises a needle tip and a needle body, wherein the needle body adopts a hollow cylindrical structure, an open groove is provided at the front end of the needle body, and side edges are provided on the two axial surfaces of the opening groove; the needle tip is composed of three or four pointed bodies, a concave arc-shaped front edge is provided between each two adjacent pointed bodies, the open end of the open groove is located between two of the pointed bodies, and there is no front edge between the two pointed bodies; a micro-deformation structure is provided at the root of each pointed body.

[0005] The micro-deformation structure consists of a number of annular grooves perpendicular to the axis, and the width of each annular groove is 0.01mm to 0.08mm.

[0006] The annular grooves are divided into long grooves and short grooves, the long grooves and the short grooves are staggered, and the distance between each adjacent annular groove is 0.3mm to 0.4mm.

[0007] The two ends of the long groove in the length direction are located in the middle of the width of the pointed body and are not connected to the two ends of the width of the pointed body; the number of short grooves on the same circumferential surface of the same pointed body is two, and they are located at the two ends of the width of the pointed body to form an open groove structure.

[0008] The annular groove is a plurality of short grooves, and the short grooves on different diameter sections are staggered. The length of each short groove is 0.05-0.08 mm, the width is 0.01 mm-0.03 mm, and the distance between adjacent short grooves is 0.03 mm-0.05 mm.

[0009] The root of the open groove is provided with an arc-shaped pressure relief window.

[0010] The upper surface of the side blade is an inclined surface, and the inclined surface and the plane formed by the two side blade edges form an angle of α=10° to 20°.

[0011] A sampling device with a puncture biopsy needle comprises an outer shell, an outer tube and an inner core; the outer tube is slidably connected to the outer shell, the inner core is located in the inner cavity of the outer tube, and the front end of the inner core is an integrated structure with the puncture biopsy needle; a rotating shaft is connected to the rear end of the inner core, one end of the rotating shaft is connected to the inner core, and the other end passes through the outer shell and is connected to a handwheel; a power supply and a stepper motor are provided in the outer shell, and the power supply is connected to the power interface of the stepper motor; the output shaft of the stepper motor is connected to a gear and meshes with the gear connected to the rotating shaft for transmission.

[0012] A rotary button is provided on the outer shell, and the rotary button serves as a connection switch between the stepping motor and the power supply.

[0013] The gastroenterology ultrasonic endoscopic puncture biopsy needle of the present application adopts the above structure and has the following characteristics:

[0014] 1. The biopsy needle has a structure with three or four sharp bodies at the needle tip. A small amount of the sharp body structure is used to penetrate the human tissue to achieve preliminary positioning;

[0015] 2. A micro-deformation structure with an annular groove is provided at the root of the tip. When the tip is subjected to force, it will slightly deform, thereby being able to accommodate a larger volume of human tissue. The friction resistance between the cut human tissue and the inner wall of the biopsy needle is greater, reducing the chance of tissue shedding.

[0016] 3. The needle tip is provided with a front blade and the opening groove is provided with a side blade, which can complete the cutting of human tissue into the inner cavity of the needle during the continuous feeding process through the rotation of the puncture biopsy needle;

[0017] 4. A pressure relief window is set at the end of the opening slot so that the human tissue squeezed into the inner cavity can find the pressure relief port under the state of high pressure squeeze. The human tissue will protrude in the pressure relief slot to play a role of clamping, thereby ensuring that the human tissue will not fall out after sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a stereoscopic diagram of Example 1 of an ultrasonic endoscopic puncture biopsy needle for the Department of Gastroenterology.

[0019] Figure 2 for Figure 1 A partial enlarged view of .

[0020] Figure 3 The figure is a top view of the first embodiment of the gastroenterology ultrasonic endoscopic puncture biopsy needle.

[0021] Figure 4 for Figure 3 AA cross-sectional view.

[0022] Figure 5 The present invention is a stereoscopic diagram of the second embodiment of the gastroenterology ultrasonic endoscopic puncture biopsy needle.

[0023] Figure 6 for Figure 3 A partial enlarged view of .

[0024] Figure 7 This is a stereoscopic diagram of Example 3 of an ultrasonic endoscopic puncture biopsy needle for the Department of Gastroenterology.

[0025] Figure 8 for Figure 7 A partial enlarged view of .

[0026] Figure 9 This is the overall structure diagram of the sampling device.

[0027] Figure 10 This is a diagram of the internal structure of the outer shell of the sampling device. DETAILED DESCRIPTION

[0028] Example 1: Four-pointed body, three front blades, two rear blades puncture biopsy needle

[0029] like Figure 1 and Figure 2 As shown, a gastroenterology ultrasonic endoscopic puncture biopsy needle includes a needle tip 1 and a needle body 2, wherein the needle body 2 adopts a hollow cylindrical structure, an open groove 3 is provided at the front end of the needle body 2, and side blades 4 are respectively provided on the two axial surfaces of the open groove 3, and the two side blades become the two rear blades of the puncture biopsy needle as a whole; the needle tip 1 is composed of four sharp bodies 1-1, and a concave arc-shaped front blade 1-2 is provided between each two adjacent sharp bodies 1-1, the open end of the open groove 3 is located between two of the sharp bodies 1-1, and there is no front blade 1-2 between the two sharp bodies 1-1, so the puncture biopsy needle as a whole forms three front blades; a micro-deformation structure is provided at the root of each sharp body 1-1.

[0030] like Figure 2 As shown, the micro-deformation structure is composed of a number of annular grooves 5 perpendicular to the axis, the width of each annular groove is 0.05mm to 0.08mm, and the distance between each adjacent annular groove is 0.3mm to 0.4mm.

[0031] The annular groove 5 is divided into a long groove 5-1 and a short groove 5-2, and the long groove 5-1 and the short groove 5-2 are staggered.

[0032] When the root width of the pointed body 1-1 is wider, the two ends of the long groove 5-1 in the length direction are located in the middle of the width of the pointed body 1-1 and do not penetrate the two ends of the width of the pointed body 1-1; the number of short grooves 5-2 on the same circumferential surface of the same pointed body 1-1 is two, and they are located at the two ends of the width of the pointed body 1-1, forming an open groove structure.

[0033] An arc-shaped pressure relief window 6 is provided at the root of the opening groove 3. The arc-shaped pressure relief window 6 has a partial pressure relief effect on the cut tissue and a clamping and limiting effect on the human tissue.

[0034] like Figure 3 and Figure 4 As shown, the upper surface of the side blade 4 is an inclined surface, and the inclined surface and the plane formed by the two cutting edges of the side blades 4 form an angle of α=10°~20°.

[0035] like Figure 5 and Figure 6 As shown, a sampling device with a puncture biopsy needle comprises an outer shell 11, an outer tube 12, and an inner core 13. The outer tube 12 is slidably connected to the outer shell 11, and the inner core 13 is located in the inner cavity of the outer tube 12. The front end of the inner core 13 is integral with the puncture biopsy needle. A rotating shaft 14 is connected to the rear end of the inner core 13. One end of the rotating shaft 14 is connected to the inner core 13, and the other end passes through the outer shell 11 and is connected to a handwheel 15. A power supply 16 and a stepper motor 17 are provided within the outer shell 11. The power supply 16 is connected to the power port of the stepper motor 17. The output shaft of the stepper motor 17 is connected to a gear that meshes with the gear connected to the rotating shaft 14. A rotary button 18 is provided on the outer shell 11 to switch the connection between the stepper motor 17 and the power supply 16.

[0036] When the rotary button 18 is activated, the stepper motor 17 rotates, driving the inner core 13 to rotate via the rotary shaft 14. After the biopsy needle penetrates human tissue, the doctor gives a feeding action, and the stepper motor 17 rotates to rotate the biopsy needle. When the tissue at the puncture site is hard, the two long prongs at the front of the needle tip 1 can better initially locate the tissue, and the two short prongs finally locate the tissue, firmly piercing the sampling site. After being cut by the front blade, the human tissue enters the cavity of the biopsy needle. Because the needle body 2 is slightly deformed, the volume of the tissue is larger. The part not completely removed by the front blade can be further cut by the rotation of the side blade, allowing the tissue to completely enter the cavity. Example 2

[0037] like Figure 7 and Figure 8 As shown, the annular groove distribution of the micro-deformation structure of this embodiment differs from that of the first embodiment, while the remaining structure is the same as that of the first embodiment. Specifically, the annular groove 5 comprises multiple short grooves 5-2, with the short grooves 5-2 arranged in a staggered pattern on cross-sections of different diameters. Each short groove 5-2 is 0.05 to 0.08 mm long and 0.01 to 0.03 mm wide, with the distance between adjacent short grooves 5-2 being 0.03 to 0.05 mm. After the needle tip 1 locates the tissue, the unique staggered distribution of the short grooves creates a wedge-shaped micro-deformation, which facilitates the tissue's entry into the cavity.

[0038] Example 3: Tricuspid-two front blades-two back blades puncture biopsy needle

[0039] like Figure 9 and Figure 10 As shown, a gastroenterology ultrasonic endoscopic puncture biopsy needle includes a needle tip 1 and a needle body 2, wherein the needle body 2 adopts a hollow cylindrical structure, and an open groove 3 is provided at the front end of the needle body 2. The two axial surfaces of the open groove 3 are respectively provided with side blades 4, and the two side blades form the two rear blades of the puncture biopsy needle as a whole; the needle tip 1 is composed of three pointed bodies 1-1, and a concave arc-shaped front blade 1-2 is provided between each two adjacent pointed bodies 1-1. The open end of the open groove 3 is located between two of the pointed bodies 1-1, and there is no front blade 1-2 between the two pointed bodies 1-1, so the puncture biopsy needle as a whole forms two front blades; a micro-deformation structure is provided at the root of each pointed body 1-1. The rest of the structure is the same as that of the first embodiment. The structure of this embodiment is suitable for extracting tissue with a smooth and soft surface. The unique three-pointed body is more conducive to locating the target position, facilitating the needle body 2 to feed and extract tissue, and avoiding the tissue being squeezed out of the cavity or the needle body 2 "slipping" at the puncture site due to insufficient positioning.

Claims

1. A gastroenterology ultrasonic endoscopic puncture biopsy needle, characterized by: The invention comprises a needle tip (1) and a needle body (2), wherein the needle body (2) adopts a hollow cylindrical structure, an opening groove (3) is provided at the front end of the needle body (2), and two axial surfaces of the opening groove (3) are respectively provided with side blades (4); the needle tip (1) is composed of three or four pointed bodies (1-1), a concave arc-shaped front blade (1-2) is provided between each two adjacent pointed bodies (1-1), the opening end of the opening groove (3) is located between two of the pointed bodies (1-1), and there is no front blade (1-2) between the two pointed bodies (1-1); a micro-deformation structure is provided at the root of each pointed body (1-1); the micro-deformation structure is composed of a plurality of annular grooves (5) perpendicular to the axis, and the width of each annular groove is 0.01mm to 0.08mm.

2. The gastroenterology ultrasonic endoscopic puncture biopsy needle according to claim 1, characterized in that: The annular grooves (5) are divided into long grooves (5-1) and short grooves (5-2). The long grooves (5-1) and the short grooves (5-2) are staggered and distributed, and the distance between each adjacent annular groove is 0.3 mm to 0.4 mm.

3. The gastroenterology ultrasonic endoscopic puncture biopsy needle according to claim 2, characterized in that: The two ends of the long groove (5-1) in the length direction are located in the middle of the width of the pointed body (1-1) and do not penetrate the two ends of the width of the pointed body (1-1); the number of short grooves (5-2) on the same circumferential surface of the same pointed body (1-1) is two, and they are located at the two ends of the width of the pointed body (1-1), forming an open groove structure.

4. The gastroenterology endoscopic ultrasonic puncture biopsy needle according to claim 1, characterized in that: The annular groove (5) is a plurality of short grooves (5-2), and the short grooves (5-2) on cross sections with different diameters are staggered; each short groove (5-2) has a length of 0.05 to 0.08 mm and a width of 0.01 mm to 0.03 mm, and the distance between adjacent short grooves (5-2) is 0.03 mm to 0.05 mm.

5. The gastroenterology ultrasonic endoscopic puncture biopsy needle according to claim 1, characterized in that: An arc-shaped pressure relief window (6) is provided at the root of the opening groove (3).

6. The gastroenterology endoscopic ultrasonic puncture biopsy needle according to claim 1, characterized in that: The upper surface of the side blade (4) is an inclined surface, and the inclined surface and the plane formed by the cutting edges of the two side blades (4) form an angle of α=10° to 20°.

7. A sampling device having a puncture biopsy needle according to any one of claims 1 to 6, characterized in that: The invention comprises an outer shell (11), an outer tube (12) and an inner core (13); the outer tube (12) is slidably connected to the outer shell (11), the inner core (13) is located in the inner cavity of the outer tube (12), and the front end of the inner core (13) is an integral structure with the puncture biopsy needle; a rotating shaft (14) is connected to the rear end of the inner core (13), one end of the rotating shaft (14) is connected to the inner core (13), and the other end passes through the outer shell (11) and is connected to the hand wheel (15); a power supply (16) and a stepper motor (17) are provided in the outer shell (11), and the power supply (16) is connected to the power interface of the stepper motor (17); the output shaft of the stepper motor (17) is connected to a gear, and meshes with the gear connected to the rotating shaft (14) for transmission.

8. The sampling device for a puncture biopsy needle according to claim 7, characterized in that: A rotary button (18) is provided on the outer shell (11), and the rotary button (18) serves as a connection switch between the stepping motor (17) and the power supply (16).

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