Ultrasonic micropore accurate positioning guide needle

Abstract

The utility model discloses an ultrasonic micropore accurate positioning guide needle, which belongs to the technical field of medical instruments and comprises a needle tube, a needle core, a needle tube joint and a needle core joint. One end of the needle tube is provided with a tip portion, the other end of the needle tube is fixedly connected with the needle tube connector, the needle core is arranged in the needle tube, one end of the needle core is provided with a tip portion, the other end of the needle core is fixedly connected with the needle core connector, and after the needle core connector and the needle tube connector are positioned and fixed through a clamping groove, the needle core is matched with the tip portion of the needle core through an inner hole of the needle tube and the needle tube. A sand blasting treatment layer is arranged on the circumferential surface of a needle tube body, three rows of needle holes are evenly distributed in the surface of the sand blasting treatment layer, each row comprises five needle holes, and the needle holes penetrate through the wall of the needle tube. The position of the guide needle can be clearly seen under ultrasound, accurate puncture can be achieved, blind puncture in an operation is avoided, puncture risks are reduced, the accurate success rate of puncture is increased, and operation risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an ultrasonic micro-hole precise positioning guiding needle. Background Art

[0002] The percutaneous nephrostomy minimally invasive dilation drainage kit mainly includes a dilation tube, a tearable outer sheath, a fistula drainage tube, a guide wire and a renal puncture guiding needle. Clinically, it is mainly used for taking stones in the kidney through the dilated skin tissue to establish a surgical channel, and percutaneous nephroscope, laser optical fiber, lithotripsy instrument or operating cable, etc. are introduced through the channel. The surgical steps are as follows:

[0003] Under medical imaging, observe the location of the kidney stone. After local anesthesia of the skin tissue, insert the renal puncture guiding needle towards the location of the kidney stone. After the renal puncture guiding needle is inserted in place, pull out the needle core of the guiding needle, then introduce the guide wire from the tail with an opening of the puncture guiding needle, and then pull out the renal puncture guiding needle. Gradually expand from small to large multiple dilation tubes along the guide wire until the largest dilation tube. The tearable outer sheath is dilated in place to establish a surgical channel. Percutaneous nephroscope, laser optical fiber, lithotripsy instrument or operating cable, etc. are introduced through the channel to perform the operation of breaking and removing the stone. Then, insert the fistula drainage tube through the tearable outer sheath. After tearing the outer sheath, remove the tearable outer sheath, fix the fistula drainage tube, connect the drainage bag and then perform postoperative care, and the operation is completed.

[0004] In the prior art, the ultrasonic positioning of the renal puncture guiding needle is not clear and the positioning accuracy is insufficient. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an ultrasonic micro-hole precise positioning guiding needle, which solves the problem of high surgical risk.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An ultrasonic micro-hole precise positioning guiding needle includes a needle tube, a needle core, a needle tube joint and a needle core joint; one end of the needle tube has a pointed end portion, and the other end is fixedly connected to the needle tube joint. The needle core is arranged inside the needle tube. One end of the needle core has a pointed end portion, and the other end is fixedly connected to the needle core joint. After the needle core joint and the needle tube joint are fixed by slot positioning, the needle core passes through the inner hole of the needle tube, and the pointed parts of the needle tube and the needle core are completed to anastomose. The circumferential surface of the needle tube body is provided with a sandblasting treatment layer, and M rows of needle holes are evenly distributed on the surface of the sandblasting treatment layer, with N needle holes in each row, and the needle holes penetrate through the needle tube wall.

[0008] Preferably, the circumferential surface of the needle tube body starting from the pointed end portion and excluding the pointed end portion is provided with a sandblasting treatment layer, and the length is 10 mm.

[0009] Preferably, the surface of the sandblasting treatment layer is evenly distributed with 3 columns of pinholes, 5 pinholes in each column, and the pinholes penetrate through the wall of the needle tube.

[0010] Preferably, a channel communicating with the needle tube is provided inside the needle tube joint, a positioning card is provided on the needle core joint, and a positioning groove adapted to the positioning card is provided on the needle tube joint, and the needle core joint and the needle tube joint are positioned and fixed through the card slot.

[0011] The beneficial effects of the present utility model: The position of the guiding needle can be clearly seen under B-ultrasound, accurate puncture can be achieved. When the tip reaches the position of hydronephrosis, the effusion will quickly flow out from the end of the needle tube joint, and the doctor will quickly know that the puncture is in place, avoiding blind puncture during the operation, reducing the puncture risk, improving the accurate success rate of puncture, and reducing the operation risk. Description of the Drawings

[0012] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the needle tube of the present utility model.

[0015] Figure 3 It is a schematic diagram of the needle core of the present utility model.

[0016] Description of the Drawings: 1 - needle tube, 2 - needle core, 3 - needle tube joint, 4 - needle core joint, 5 - pinhole. Detailed Embodiments

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3 , an ultrasonic micro-hole precise positioning guiding needle, comprising a needle tube 1, a needle core 2, a needle tube joint 3 and a needle core joint 4; one end of the needle tube 1 has a tip, and the other end is fixedly connected to the needle tube joint 3. The needle core 2 is arranged inside the needle tube 1. One end of the needle core 2 has a tip, and the other end is fixedly connected to the needle core joint 4. After the needle core joint 4 and the needle tube joint 3 are positioned and fixed through the card slot, the needle core passes through the inner hole of the needle tube, and the tips of the needle tube and the needle core are completed to anastomose. The circumferential surface of the tube body of the needle tube 1 is provided with a sandblasting treatment layer, and the surface of the sandblasting treatment layer is evenly distributed with M columns of pinholes 5, N pinholes 5 in each column, and the pinholes penetrate through the wall of the needle tube 1.

[0019] Specifically, the circumferential surface of the tube body of the syringe needle 1 starting from the tip end and excluding the tip end is provided with a sandblasting treatment layer with a length of 10 mm.

[0020] Specifically, 3 rows of needle holes 5 are evenly distributed on the surface of the sandblasting treatment layer, with 5 needle holes 5 in each row, and the needle holes 5 penetrate through the tube wall of the syringe needle 1.

[0021] Specifically, a channel communicating with the syringe needle 1 is provided inside the syringe needle joint 3, a positioning card is provided on the needle core joint 4, and a positioning groove adapted to the positioning card is provided on the syringe needle joint 3, and the needle core joint 4 and the syringe needle joint 3 are positioned and fixed through the card slot.

[0022] On the front end 10 mm surface of the syringe needle 1 of the present utility model, there are sandblasting patterns and small holes penetrating the tube wall are evenly distributed. According to the ultrasonic working principle, when the puncture guiding needle punctures, using the ultrasonic imaging principle, under the action of the small holes in the tube wall and the sandblasting patterns, the guiding needle can be clearly imaged under B-ultrasound, the position where the guiding needle is located can be clearly seen, accurate puncture can be achieved, and the surgical channel will not be lost. During the operation, under medical imaging or B-ultrasound, the position of the kidney stone in the kidney is observed. After local anesthesia of the skin tissue, the renal puncture guiding needle is inserted towards the kidney stone position. After the renal puncture guiding needle is inserted in place, the needle core 2 is pulled out, and then the guide wire is introduced from the syringe needle joint 3. After the guide wire reaches the renal pelvis position, it is left in place, and then the guiding needle tube is pulled out along the guide wire, and then the dilatation tube and the tearable outer sheath instrument are placed along the guide wire to establish the surgical channel.

[0023] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacement of some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An ultrasonic micro-hole precise positioning guiding needle, comprising a needle tube (1), a stylet (2), a needle tube connector (3) and a stylet connector (4); characterized in that, One end of the syringe tube (1) has a pointed end, and the other end is fixedly connected to a syringe tube joint (3). The plunger (2) is arranged inside the syringe tube (1). One end of the plunger (2) has a pointed end, and the other end is fixedly connected to a plunger joint (4). After the plunger joint (4) and the syringe tube joint (3) are fixedly positioned through a card slot, the plunger passes through the inner hole of the syringe tube, and the pointed parts of the syringe tube and the plunger are aligned. A sandblasting treatment layer is provided on the circumferential surface of the body of the syringe tube (1), and three rows of needle holes (5) are evenly distributed on the surface of the sandblasting treatment layer, with five needle holes (5) in each row, and the needle holes penetrate through the tube wall of the syringe tube (1).

2. The ultrasonic micro-hole precise positioning guiding needle according to claim 1, wherein The sandblasting treatment layer is provided on the circumferential surface of the body of the syringe tube (1) starting from the pointed end and excluding the pointed end, and the length is 10 mm.

3. The ultrasonic micro-hole precise positioning guiding needle according to claim 1, characterized in that, A channel communicating with the syringe tube (1) is provided inside the syringe tube joint (3). A positioning card is provided on the plunger joint (4), and a positioning groove adapted to the positioning card is provided on the syringe tube joint (3). The plunger joint (4) and the syringe tube joint (3) are fixedly positioned through the card slot.

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