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CN-121987253-A - Lung ultrasonic endoscope

CN121987253ACN 121987253 ACN121987253 ACN 121987253ACN-121987253-A

Abstract

The invention discloses a lung ultrasonic endoscope which comprises an endoscope and a puncture assembly arranged in the endoscope, wherein the proximal end of the puncture assembly is connected with a handle part, the puncture assembly comprises a sheath tube, a puncture needle tube and a biopsy channel tube, the distal ends of the puncture needle tube and the biopsy channel tube are fixedly connected and coaxially sleeved in the sheath tube, an ultrasonic probe is contacted in the puncture needle tube, the distal end of the puncture needle tube is provided with a spike, the spike is fixedly connected with a magnetic positioning sensor, the ultrasonic emission surface of the ultrasonic probe faces the advancing direction of the spike, the magnetic positioning sensor is close to the spike, the region in front of the needle tip can be identified in advance through the magnetic positioning sensor embedded in the spike and matched with an external pasting part outside the body, the spike can be accurately positioned in real time, the puncture bias target is avoided, and the whole device is easy to operate and is convenient to operate independently.

Inventors

  • ZHANG YUKE
  • Huang Lingle
  • CHEN HAINI

Assignees

  • 中国人民解放军陆军第九五八医院

Dates

Publication Date
20260508
Application Date
20260402

Claims (8)

  1. 1. The lung ultrasonic endoscope is characterized by comprising an endoscope (5) and a puncture assembly (1) arranged in the endoscope (5), wherein the proximal end of the puncture assembly (1) is connected with a handle part (2); The puncture assembly (1) comprises a sheath tube (11), a puncture needle tube (12) and a biopsy channel tube (13), wherein the puncture needle tube (12) and the distal end of the biopsy channel tube (13) are fixedly connected and coaxially sleeved in the sheath tube (11), an ultrasonic probe (110) is contacted in the puncture needle tube (12), a spike (18) is arranged at the distal end of the puncture needle tube (12), a magnetic positioning sensor (111) is fixedly connected in the spike (18), the ultrasonic emission surface of the ultrasonic probe (110) faces the advancing direction of the spike (18), and the magnetic positioning sensor (111) is closely adjacent to the spike (18).
  2. 2. The lung ultrasonic endoscope of claim 1, wherein the puncture needle tube (12) is integrally connected with the distal end of the biopsy channel tube (13), an annular mounting groove (14) is arranged between the puncture needle tube and the distal end, a shielding cable (15), an ultrasonic probe (110) and a signal amplifier (112) are fixedly connected in the annular mounting groove (14), the surface layer of the shielding cable (15) is a grounding shielding layer (16), the output end of the ultrasonic probe (110) passes through the annular mounting groove (14) and an insulating adhesive (17) and is close to a spike (18), the spike (18) and the insulating adhesive (17) do not shield the emitting surface of the ultrasonic probe (110), the signal amplifier (112) is tightly attached to the ultrasonic probe (110), and the annular mounting groove (14) is filled with the insulating adhesive (17).
  3. 3. The pulmonary ultrasound endoscope of claim 1, wherein the distal end of the puncture needle tube (12) and the spike (18) are integrally formed, a non-penetrating mounting hole (19) is formed in the side surface of the spike (18), a magnetic positioning sensor (111) matched with the non-penetrating mounting hole in shape is fixedly connected in the mounting hole (19), the shielding cable (15) is electrically connected with the magnetic positioning sensor (111), the ultrasonic probe (110) and the signal amplifier (112) through wires, and an external attachment part (4) matched with the magnetic positioning sensor (111) is arranged outside the endoscope (5).
  4. 4. A lung ultrasonic endoscope according to claim 3, wherein the handle part (2) comprises a housing (21), a first rotating wheel (22) and a second rotating wheel (28) are rotatably connected to the same side of the housing (21) through damping bearings, a connecting cylinder (25) is slidably connected to the inner wall of the housing (21), a connecting column (23) is fixedly connected to the inner wall of the first rotating wheel (22), a spherical member (24) is fixedly connected to the other end of the connecting column (23), limiting rings (27) are fixedly connected to the two ends of the connecting cylinder (25), the limiting rings (27) are in contact with the inner wall of the handle part (2), a curve groove (26) is formed in the outer cambered surface of the connecting cylinder (25), and the spherical member (24) is slidably connected with the curve groove (26).
  5. 5. A pneumonic endoscope as defined in claim 4, wherein the proximal end of the sheath tube (11) is fixedly connected with the housing (21), the proximal end of the puncture needle tube (12) passes through the connecting cylinder (25) and is fixedly connected with the connecting cylinder, the proximal end of the biopsy channel tube (13) is coaxially sealed and detachably connected with the tip of the self-locking negative pressure injector (3), and the self-locking negative pressure injector (3) is detachably connected in the housing (21).
  6. 6. The ultrasonic pulmonary endoscope of claim 5, wherein a gear (29) with a same rotation shaft is fixedly connected to the side surface of the second rotating wheel (28), a rack (210) is slidably connected to the housing (21), one end of the rack (210) is fixedly connected to a fixing clamp plate (211), and the fixing clamp plate (211) is clamped with the piston end of the self-locking negative pressure injector (3).
  7. 7. The lung ultrasonic endoscope of claim 3, wherein the outer patch (4) comprises three flexible patches (41), the three flexible patches (41) are fixedly connected with magnetic field generators (42), the three magnetic field generators (42) are synchronously driven and respectively emit low-frequency alternating magnetic fields with different frequencies, and four corners of each flexible patch (41) are fixedly connected with reference magnetic sensors.
  8. 8. The ultrasonic pulmonary endoscope of claim 1, wherein the sheath (11) is coaxially nested in the endoscope (5), and the distal end of the sheath (11) is of a circular arc blunt mouth smooth structure.

Description

Lung ultrasonic endoscope Technical Field The invention relates to the technical field of medical instruments, in particular to a lung ultrasonic endoscope. Background ‌ A lung ultrasonic endoscope is an advanced minimally invasive examination means combining ‌ ultrasonic technology and a bronchoscope ‌, can image in real time and accurately guide biopsy, enables doctors to observe pathological changes outside the airway and in deep lung, and achieves efficient and safe pathological diagnosis. At present, aiming at pathological diagnosis of lung mediastinum, lung portals and peripheral lesions of the lung, the clinical mainstream adopts an ultrasonic bronchoscope (EBUS) guided by a bronchoneedle biopsy technique, and the technique can finish minimally invasive puncture sampling through a natural airway cavity without opening the chest, thus being a gold standard for preoperative diagnosis and stage of the lesion of the lung. In the operation process, an operator performs two-dimensional CT picture planning according to experience, combines the actual body position and respiratory motion of a patient, performs three-dimensional abstract simulation in the brain, transmits the three-dimensional abstract simulation to a double-hand operation puncture needle to enter the lung, repeatedly performs CT scanning, adjusts the puncture angle and depth, and finally reaches a target focus to perform needle aspiration biopsy. But this commonly used flow can only realize the indirect monitoring of puncture route through the side direction ultrasonic probe of scope front end at present, can't acquire the tissue image in front of the needle point, and the rest in front of the needle point in the puncture process belongs to the visual field blind area this moment, can't discern in advance, and because the patient can constantly breathe the motion in the operation in-process, the position skew influences extremely this moment, the phenomenon of puncture off-target can appear probably, is unfavorable for follow-up biopsy. Disclosure of Invention The invention aims to provide a lung ultrasonic endoscope for solving the problems in the background technology. In order to achieve the purpose, the invention provides the technical scheme that the lung ultrasonic endoscope comprises an endoscope and a puncture assembly arranged in the endoscope, wherein the proximal end of the puncture assembly is connected with a handle part; the puncture assembly comprises a sheath tube, a puncture needle tube and a biopsy channel tube, wherein the distal ends of the puncture needle tube and the biopsy channel tube are fixedly connected and coaxially sleeved in the sheath tube, an ultrasonic probe is contacted in the puncture needle tube, a spike is arranged at the distal end of the puncture needle tube, a magnetic positioning sensor is fixedly connected in the spike, the ultrasonic emission surface of the ultrasonic probe faces the advancing direction of the spike, and the magnetic positioning sensor is closely adjacent to the spike. Preferably, the puncture needle tube is integrally connected with the distal end of the biopsy channel tube, an annular mounting groove is formed between the puncture needle tube and the distal end of the biopsy channel tube, a shielding cable, an ultrasonic probe and a signal amplifier are fixedly connected in the annular mounting groove, the surface layer of the shielding cable is a grounding shielding layer, the output end of the ultrasonic probe penetrates through the annular mounting groove and insulating glue and is close to the spike, the spike and the insulating glue do not shield the emitting surface of the ultrasonic probe, the signal amplifier is tightly attached to the ultrasonic probe, and insulating glue is filled in the annular mounting groove. Preferably, the distal end of puncture needle tubing and spike integrated into one piece, the side of spike has seted up non-run through mounting hole, fixedly connected with rather than shape matched magnetic positioning sensor in the mounting hole, shielding cable pass through wire and magnetic positioning sensor, ultrasonic probe and signal amplifier electric connection, the scope is equipped with outside with magnetic positioning sensor assorted outer portion of pasting outward. Preferably, the handle part comprises a shell, the same side of the shell is rotationally connected with a first rotating wheel and a second rotating wheel through damping bearings, the inner wall of the shell is slidably connected with a connecting cylinder, the inner wall of the first rotating wheel is fixedly connected with a connecting column, the other end of the connecting column is fixedly connected with a spherical part, two ends of the connecting cylinder are fixedly connected with limiting rings, the limiting rings are in contact with the inner wall of the handle part, a curved groove is formed in the outer cambered surface of the connecting cylinder, and the spherical part