A needle for ultrasound-guided pudendal nerve puncture

Abstract

The application discloses a kind of puncture needle for ultrasound-guided under pudendal nerve, including needle body, needle seat and bottle body, the outside of needle body is all set with hole, the inside of bottle body is equipped with suction tube, blocking structure includes guide slot, compression spring, lifting frame, hose, fixed block and pressing plate, hose is fixed in the inside of needle seat, the top of hose is equipped with lifting frame, the outside of lifting frame is equipped with guide slot.The application injects liquid medicine into the inside of needle body, so that the liquid medicine pushes the diaphragm to protrude upwards, at the same time, the barb hooks the muscle fiber, blocks the needle body from sliding outward, reduces the pressure in the inside of needle body, so that the protruding diaphragm enters the inside of needle body, and the needle body is convenient to pull out, so as to realize the easy-to-fix function of the device, the barb hooks the muscle fiber by springing up, blocks the needle body from sliding outward, and the medical staff can conveniently operate drug administration, so as to improve the stability of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a puncture needle for ultrasound-guided pudendal nerve. BACKGROUND

[0002] Pudendal neuralgia refers to severe pain in the pudendal nerve innervation area between the vaginal orifice, clitoral root, penis, anus and vulva, which can be accompanied by bladder, intestinal function and sexual dysfunction, and can cause psychological problems such as anxiety and depression in patients. In order to treat pudendal neuralgia, an ultrasound-guided puncture needle for pudendal nerve is needed to inject drugs directly to the nerve, thereby reducing the pain suffered by the patient.

[0003] The existing puncture needle for ultrasound-guided pudendal nerve has the following defects:

[0004] Chinese patent authorization announcement No. CN206714805U, announcement date December 8, 2017, discloses a multifunctional puncture needle guided by ultrasound, which is composed of a puncture needle and an inner needle. The puncture needle is composed of a needle barrel (1), a piston (2), a needle core inlet (3) and a syringe interface (4). The puncture needle is a Y-shaped structure, the needle barrel (1) and the syringe interface (4) are connected horizontally, the anti-reflux piston (2) is arranged in the needle core inlet (3), and one end of the needle core inlet (3) is arranged on the syringe interface (4). The inner needle is composed of a needle core (7) and a bayonet (8). The present application discloses a multifunctional puncture needle guided by ultrasound. The puncture needle is completely developed on the ultrasound equipment, and the developed puncture needle is displayed at different fixed lengths. The needle body can be used to measure the puncture depth during the puncture process. The user can develop at any angle during use, which is convenient for observation and guiding operation. The product structure is simplified, easy to produce, and can be clearly developed on the ultrasound equipment throughout the process, achieving multi-purpose and multi-functional characteristics.

[0005] However, the device of the above-mentioned disclosure mainly considers how to solve the problem of using different parts with certain limitations, and does not consider the problem of not being convenient to fix the needle body in the existing device. Due to the structural characteristics of the pudendal nerve, it is difficult to stabilize at one point when the puncture needle is punctured, and it is easy to fall off and difficult to administer drugs.

[0006] Therefore, it is necessary to study a puncture needle for ultrasound-guided pudendal nerve, so as to improve the stability of the puncture needle for ultrasound-guided pudendal nerve during use. SUMMARY

[0007] (I) Technical problems to be solved

[0008] The present application aims to provide a puncture needle for ultrasound-guided pudendal nerve, to solve the problem of inconvenient fixation of the needle body in the background art. (B) SUMMARY

[0010] To solve the above technical problems, the present application provides the following technical scheme: a puncture needle for ultrasound-guided pudendal nerve, comprising a needle body, a needle seat and a bottle body, holes are formed on the outer side of the needle body, an auxiliary structure is arranged on the outer side of the needle body, a needle seat is fixed on one side of the needle body, a blocking structure is arranged in the needle seat, a catheter is arranged on one side of the needle seat provided with a connecting structure, the catheter is fixed with a bottle body on one side, a bottle cap is installed at the top of the bottle body, an air guide tube is installed on one side of the bottle body, a suction tube is installed in the bottle body, the blocking structure comprises a guide groove, a compression spring, a lifting frame, a hose, a fixed block and a pressing plate, the hose is fixed in the needle seat, the top of the hose is sleeved with the lifting frame, and the outer side of the lifting frame is sleeved with the guide groove.

[0011] The puncture needle for ultrasound-guided pudendal nerve using the present technical scheme injects medicine into the inside of the bottle body by opening the bottle cap, then connects and fixes the catheter with the needle seat using the connecting structure, injects gas into the inside of the bottle body through the air guide tube to increase the pressure, makes the liquid medicine in the bottle body enter the inside of the needle body through the suction tube and the catheter, inserts the needle body into the pudendal nerve part of the patient, increases the pressure in the inside of the needle body through the air guide tube, injects the medicine into the patient's body through the holes, fixes the position of the device through the auxiliary structure, and controls the flow of the medicine through the blocking structure.

[0012] Preferably, the bottom end of the lifting frame is fixed with a compression spring, the top of the hose is provided with a fixed block, and the top of the lifting frame is fixed with a pressing plate. The lifting frame is pushed upward by the compression spring to block the hose, and the cavity in the hose is expanded by pressing the pressing plate to make the liquid medicine flow.

[0013] Preferably, the lifting frame and the guide groove form a sliding structure, and the compression springs are symmetrically distributed on the vertical center line of the lifting frame.

[0014] Preferably, the auxiliary structure comprises a fixed ring, a diaphragm and a barb, the fixed ring is fixed on the outer side of the needle body, the diaphragm is fixed in the fixed ring, and the barb is fixed at the top of the diaphragm. By injecting liquid medicine into the inside of the needle body, the liquid medicine pushes the diaphragm to protrude upward, the barb hooks the muscle fibers to block the outward sliding of the needle body, reduces the pressure in the inside of the needle body, makes the protruding diaphragm enter the inside of the needle body, and facilitates the pulling out of the needle body.

[0015] Preferably, the membrane has a funnel-shaped cross section, and the fixing ring is distributed equidistantly on the outside of the needle body.

[0016] Preferably, the connecting structure comprises a shell, a connecting pipe, a first sealing pad and a second sealing pad, the second sealing pad is fixed on one side of the needle seat, the connecting pipe is fixed in the second sealing pad, the shell is sleeved on the outside of the connecting pipe, and the first sealing pad is fixed on the outer wall of the connecting pipe. By pushing the connecting pipe, the first sealing pad is clamped into the groove in the shell, the connecting pipe is fixed in the shell, and the first sealing pad and the second sealing pad fill the gap to prevent liquid leakage.

[0017] Preferably, the diameter of the connecting pipe is smaller than the inner diameter of the shell, and the first sealing pad and the shell form a clamping structure.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present application are that the puncture needle structure for the pudendal nerve under the guidance of ultrasound is reasonable, and has the following advantages:

[0020] (1) By injecting liquid medicine into the inside of the needle body, the liquid medicine pushes the membrane to protrude upward, the barbs hook the muscle fibers, block the needle body from sliding outward, reduce the pressure in the inside of the needle body, and make the protruding membrane enter the inside of the needle body, so as to realize the easy fixation function of the device, the barbs hook the muscle fibers, block the needle body from sliding outward, facilitate the drug administration operation of medical staff, and improve the stability of the device;

[0021] (2) By pushing the lifting frame upward to block the hose, pressing the pressing plate to expand the cavity in the hose, and making the liquid medicine flow, the injection control function of the device is realized, the on-off of the drug amount is controlled, the speed of drug administration is controlled, medical staff can accurately and uniformly administer drugs, and the functionality of the device is improved;

[0022] (3) By pushing the connecting pipe to make the first sealing pad clamped into the groove in the shell, the connecting pipe is fixed in the shell, the first sealing pad and the second sealing pad fill the gap to prevent liquid leakage, the connecting function of the device is realized, the needle seat and the catheter are quickly connected and fixed, the sealing property is strengthened, and air leakage at the connection is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] Figure 1 It is a schematic diagram of the front view structure of the present application.

[0025] Figure 2 It is a schematic diagram of the front view structure of the present application.

[0026] Figure 3 It is a schematic diagram of the front view structure of the present application. Figure 1

[0027] Figure 4 It is a schematic diagram of the front view structure of the present application.

[0028] Figure 5 It is a schematic diagram of the front view structure of the present application.

[0029] The reference signs in the drawings are explained as follows: 1, needle body; 2, hole; 3, auxiliary structure; 301, fixed ring; 302, diaphragm; 303, barb; 4, needle seat; 5, blocking structure; 501, guide groove; 502, compression spring; 503, lifting frame; 504, hose; 505, fixed block; 506, pressing plate; 6, connecting structure; 601, shell; 602, butt joint pipe; 603, first sealing gasket; 604, second sealing gasket; 7, catheter; 8, bottle body; 9, suction tube; 10, air guide pipe; 11, bottle cap. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] ​In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment one

[0033] Please refer to Figures 1-5 The present application provides a kind of for the puncture needle of ultrasound-guided under pudendal nerve, including needle body 1, needle seat 4 and bottle body 8, the outside of needle body 1 is all set with hole 2, the outside of needle body 1 is all provided with auxiliary structure 3, one side of needle body 1 is fixed with needle seat 4, the inside of needle seat 4 is provided with blocking structure 5, the side of needle seat 4 being provided with connecting structure 6 is provided with catheter 7, one side of catheter 7 is fixed with bottle body 8, bottle cap 11 is installed at the top of bottle body 8, air duct 10 is installed on one side of bottle body 8, suction tube 9 is installed in the inside of bottle body 8, auxiliary structure 3 includes fixed ring 301, diaphragm 302 and barb 303, fixed ring 301 is fixed on the outside of needle body 1, the inside of fixed ring 301 is fixed with diaphragm 302, and the top of diaphragm 302 is fixed with barb 303, the front view cross section of diaphragm 302 is funnel-shaped inclined plane structure, fixed ring 301 is distributed at equal intervals on the outside of needle body 1.

[0034] The working principle of the puncture needle for pudendal nerve under ultrasound guidance based on embodiment one is: by opening bottle cap 11 to inject medicine into the inside of bottle body 8, then using connecting structure 6 to connect and fix catheter 7 with needle seat 4, by air duct 10 to inject gas into the inside of bottle body 8 to increase pressure, so that the liquid medicine of bottle body 8 enters the inside of needle body 1 through suction tube 9 and catheter 7, needle body 1 is inserted into the pudendal nerve part of patient, by air duct 10 to increase pressure, so that the pressure in the inside of needle body 1 increases, the medicine is injected into the body of patient through hole 2, at the same time auxiliary structure 3 fixes the position of the device, the flow of medicine is controlled by blocking structure 5, by injecting liquid medicine into the inside of needle body 1, the pressure in the inside of needle body 1 is increased, then the liquid medicine pushes diaphragm 302 to protrude upwards, diaphragm 302 pushes barb 303 to move upwards at the same time, barb 303 hooks muscle fibers to block the sliding of needle body 1 outward, fixes needle body 1, by reducing the pressure in the inside of needle body 1, the protruding diaphragm 302 resets, at the same time diaphragm 302 drives barb 303 to move downwards, so that barb 303 enters the inside of needle body 1, which is convenient for pulling out needle body 1.

[0035] Embodiment two

[0036] The embodiment includes: the blocking structure 5 includes guide grooves 501, compression springs 502, lifting frames 503, hoses 504, fixed blocks 505 and pressing plates 506, the hoses 504 are fixed in the inside of the needle core seat 4, the top end of the hose 504 is sleeved with the lifting frame 503, the outer side of the lifting frame 503 is sleeved with the guide groove 501, the bottom end of the lifting frame 503 is fixed with the compression spring 502, the top end of the hose 504 is provided with the fixed block 505, the top end of the lifting frame 503 is fixed with the pressing plate 506, the sliding structure is formed between the lifting frame 503 and the guide groove 501, and the compression springs 502 are symmetrically distributed on the vertical center line of the lifting frame 503.

[0037] In the embodiment, the compression spring 502 is reset to move upward, the lifting frame 503 is pushed upward by the compression spring 502, the hose 504 is pushed upward by the lifting frame 503, the lifting frame 503 and the fixed block 505 are pressed to deform the hose 504, the circulation of the liquid medicine in the hose 504 is blocked, the pressing plate 506 is pressed to move downward, the cavity in the hose 504 is expanded, and the liquid medicine is circulated.

[0038] Embodiment three

[0039] The embodiment includes: the connecting structure 6 includes a shell 601, a butt joint pipe 602, first sealing gaskets 603 and second sealing gaskets 604, the second sealing gaskets 604 are fixed on one side of the needle core seat 4, the butt joint pipe 602 is fixed in the inside of the second sealing gaskets 604, the shell 601 is sleeved on the outer side of the butt joint pipe 602, the first sealing gaskets 603 are fixed on the outer side wall of the butt joint pipe 602, the diameter of the butt joint pipe 602 is smaller than the inner diameter of the shell 601, and the first sealing gaskets 603 and the shell 601 form the clamping structure.

[0040] In the embodiment, the butt joint pipe 602 is inserted into the inside of the shell 601 by holding the needle core seat 4, then the butt joint pipe 602 is pushed to make the first sealing gaskets 603 clamped into the grooves in the inside of the shell 601, the butt joint pipe 602 is fixed in the inside of the shell 601, the first sealing gaskets 603 fill the gap between the butt joint pipe 602 and the shell 601 to preliminarily seal, and the second sealing gaskets 604 fill the gap between the shell 601 and the needle core seat 4 to secondarily seal.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A needle for puncturing the pudendal nerve under ultrasound guidance, comprising a needle shaft body (1), a needle shaft seat (4) and a bottle body (8), characterized in that: The needle body (1) is provided with a hole (2) on the outer side, and an auxiliary structure (3) is arranged on the outer side of the needle body (1), and a needle seat (4) is fixed on one side of the needle body (1); The needle seat (4) is provided with a blocking structure (5) in the inside, and a catheter (7) is arranged on one side of the needle seat (4) provided with a connecting structure (6), and a bottle body (8) is fixed on one side of the catheter (7); The bottle body (8) is provided with a bottle cap (11) at the top end, a gas guide pipe (10) is arranged on one side of the bottle body (8), and a straw (9) is arranged in the inside of the bottle body (8), the blocking structure (5) comprises a guide groove (501), a compression spring (502), a lifting frame (503), a hose (504), a fixed block (505) and a pressing plate (506), the hose (504) is fixed in the inside of the needle seat (4), the top end of the hose (504) is sleeved with the lifting frame (503), and the outer side of the lifting frame (503) is sleeved with the guide groove (501); The bottom end of the lifting frame (503) is fixed with the compression spring (502), the top end of the lifting frame (503) is fixed with the pressing plate (506), and the lifting frame (503) and the guide groove (501) constitute a sliding structure, and the compression springs (502) are symmetrically distributed on the vertical center line of the lifting frame (503); The auxiliary structure (3) comprises a fixed ring (301), a diaphragm (302) and a barb (303), the fixed ring (301) is fixed on the outer side of the needle body (1), the diaphragm (302) is fixed in the inside of the fixed ring (301), and the barb (303) is fixed at the top end of the diaphragm (302); the front view cross section of the diaphragm (302) is funnel-shaped inclined surface structure, and the fixed ring (301) is distributed at equal intervals on the outer side of the needle body (1).

2. The needle for pudendal nerve block under ultrasound guidance according to claim 1, wherein: The connecting structure (6) comprises a shell (601), a butt joint pipe (602), a first sealing gasket (603) and a second sealing gasket (604), the second sealing gasket (604) is fixed on one side of the needle seat (4), the butt joint pipe (602) is fixed in the inside of the second sealing gasket (604), and the shell (601) is sleeved on the outer side of the butt joint pipe (602), and the first sealing gasket (603) is fixed on the outer side wall of the butt joint pipe (602).

3. The needle for pudendal nerve block under ultrasound guidance according to claim 2, wherein: The diameter of the butt joint pipe (602) is smaller than the inner diameter of the shell (601), and the first sealing gasket (603) and the shell (601) constitute a clamping structure.

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