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CN-121987131-A - Low-tolerance gastrointestinal tract detection auxiliary device and detection method

CN121987131ACN 121987131 ACN121987131 ACN 121987131ACN-121987131-A

Abstract

The invention relates to the technical field of gastrointestinal endoscopes and discloses a low-tolerance gastrointestinal tract detection auxiliary device and a detection method, wherein the device comprises a lens body, a detection device and a detection device, wherein the lens body axially comprises a scanning front end and a control rear end; the multi-dimensional conducting rod penetrates through the mirror body, the far end of the multi-dimensional conducting rod is connected with a sampling head, the multi-dimensional conducting rod is made of nickel-titanium alloy materials, the surface of the multi-dimensional conducting rod is coated with a nano Teflon coating, a hard cutting edge is arranged at the far end of the sampling head, and a collecting groove is correspondingly arranged at the rear end of the cutting edge. By utilizing the inside-out overturning characteristic of the overturning sleeve layer, the traditional dynamic sliding is converted into static laying contact, the axial resistance in the propelling process is reduced, the interfacial shear force is close to zero, and the risk of mucosal edema is greatly relieved.

Inventors

  • DAI CHUNHONG
  • MENG QINGXIN

Assignees

  • 戴春红

Dates

Publication Date
20260508
Application Date
20260320

Claims (9)

  1. 1. The low-tolerance gastrointestinal tract detection auxiliary device is characterized by comprising a mirror body (1) which axially comprises a scanning front end (11) and a control rear end (12); the overturning sleeve layer (2) is sleeved on the outer side of the mirror body (1); A bending unit (3) disposed inside the scanning front end (11); The multidimensional conducting rod (13) penetrates through the mirror body (1), and the distal end of the multidimensional conducting rod is connected with a sampling head (14), wherein the multidimensional conducting rod (13) is made of nickel-titanium alloy materials, and the surface of the multidimensional conducting rod is coated with a nanoscale Teflon coating; one end of the sampling head (14) far away from the multidimensional conducting rod (13) is provided with a hard cutting edge (15), and the rear end of the cutting edge (15) is correspondingly provided with a collecting groove (16) arranged at the front end of the scanning front end (11); The contact part of the scanning front end (11) and the sampling head (14) is provided with a complementary conical surface interface (17) which is configured to guide the sampling head (14) to be centered relative to the axis of the mirror body (1) when the multidimensional conducting rod (13) is pulled back.
  2. 2. The low tolerance gastrointestinal tract detection assisting device according to claim 1, wherein the overturning sleeve layer (2) is made of medical-grade silicone rubber material with the Shore hardness of 10A-30A, and the wall thickness is in the range of 0.3mm-1.0mm.
  3. 3. The low tolerance gastrointestinal tract detection auxiliary device according to claim 1, wherein a coaxial channel (18) is arranged inside the mirror body (1), the multi-dimensional conductive rod (13) is positioned in the coaxial channel (18), and a fluid gap is formed between the outer wall of the multi-dimensional conductive rod (13) and the inner wall of the coaxial channel (18).
  4. 4. The low tolerance gastrointestinal tract detection aid according to claim 1, wherein the bending assembly (3) comprises support ring plates (31) axially arranged along the scanning front end (11) and strain actuators (32) arranged between adjacent support ring plates (31).
  5. 5. The low tolerance gastrointestinal tract detection assisting device according to claim 4, wherein the strain actuator (32) is a dielectric elastomer driving unit comprising a dielectric elastomer film and a flexible electrode attached to a surface thereof, and the flexible electrode is connected with a lead wire in a serpentine manner.
  6. 6. The low tolerance gastrointestinal tract detection assisting device according to claim 4, wherein the strain actuator (32) is a wire traction structure comprising at least three traction wires (321) circumferentially distributed along the support ring plate (31), wherein the distal ends of the traction wires (321) are fixed to the foremost support ring plate (31), and the proximal ends are connected to a driving mechanism provided at the control rear end (12).
  7. 7. The low tolerance gastrointestinal tract detection assisting device according to claim 1, wherein the outer wall of the scanning front end (11) is provided with elastic folds (101), and the outer wall of the control rear end (12) is provided with a plurality of semicircular drag reduction bulges (102).
  8. 8. The low tolerance gastrointestinal tract detection auxiliary device according to claim 1, wherein the front end of the sampling head (14) is integrated with an imaging camera (4) and an illumination lamp group (5), and an isolation light plate (6) is arranged between the imaging camera and the illumination lamp group.
  9. 9. The method for detecting a low tolerance gastrointestinal tract detection assisting device according to any one of claims 1 to 8, comprising the steps of: 1) Positioning the front end of the overturning sleeve layer (2) to an opening part of a cavity to be detected; 2) The mirror body (1) and the overturning sleeve layer (2) are axially pushed in, so that the overturning sleeve layer (2) continuously overturns from inside to outside to form a protective layer; 3) Applying an excitation signal to the strain actuator (32) by a control system to adjust the bending orientation of the scanning front end (11); 4) When the sampling task is executed, the centering, folding, cutting and sample storage are synchronously completed by utilizing a single push-pull action.

Description

Low-tolerance gastrointestinal tract detection auxiliary device and detection method Technical Field The invention relates to the technical field of gastrointestinal endoscopes, in particular to a low-tolerance gastrointestinal tract detection auxiliary device and a detection method. Background The conventional gastrointestinal endoscope faces three deep technical problems in the detection process: First, interfacial friction injury, conventional insertion of the body, relies on relative sliding between the outer wall of the body and the mucosa of the gastrointestinal tract. Because the mucous membrane tissue is wet, smooth and crisp, the discrete shear stress (SHEARSTRESS) generated by sliding friction is very easy to cause mechanical tearing of the mucous membrane surface layer, so that a patient generates severe foreign body sensation and vomiting reaction; Second, mechanical transmission hysteresis, the existing guiding mechanism mostly adopts Bao Denglan (BowdenCable) structure based on steel wire traction. Due to the internal friction between the cable and the catheter and the elastic allowance of the cable, obvious nonlinear hysteresis exists in the guiding action, and particularly under a complex turning path, a doctor is difficult to realize accurate pointing control at the level of submillimeter; Thirdly, bending sampling fails, namely when the front end of the endoscope is in a large-angle bending state, the traditional sampling forceps pipeline can generate serious section distortion due to bending stress, so that the push-pull resistance of the sampling rod is increased suddenly. Meanwhile, due to the lack of a central guiding mechanism, the sampling head is very easy to generate radial deflection at the folding moment, so that the occlusion is not tight, and finally sampling failure or sample loss is caused. Disclosure of Invention The invention provides a low-tolerance gastrointestinal tract detection auxiliary device and a detection method, which solve the problems proposed by the background technology. The invention provides a technical scheme that the low-tolerance gastrointestinal tract detection auxiliary device comprises: the mirror body comprises a scanning front end and a control rear end along the axial direction; the overturning sleeve layer is sleeved on the outer side of the mirror body; the bending component is arranged in the scanning front end; The multidimensional conducting rod penetrates through the mirror body, and the distal end of the multidimensional conducting rod is connected with a sampling head, wherein the multidimensional conducting rod is made of nickel-titanium alloy materials, and the surface of the multidimensional conducting rod is coated with a nano-scale Teflon coating; a hard cutting edge is arranged at one end of the sampling head, which is far away from the multidimensional conductive rod, and a collecting groove arranged at the front end of the scanning is correspondingly arranged at the rear end of the cutting edge; And the contact part of the scanning front end and the sampling head is provided with a complementary conical surface interface which is configured to guide the sampling head to be centered relative to the axis of the mirror body when the multidimensional conducting rod is pulled back. As a preferable technical scheme of the invention, the overturning sleeve layer is made of medical grade silicon rubber material with the Shore hardness of 10A-30A, and the wall thickness range is 0.3mm-1.0mm. As a preferable technical scheme of the invention, a coaxial channel is arranged in the mirror body, the multidimensional conducting rod is positioned in the coaxial channel, and a fluid gap is formed between the outer wall of the multidimensional conducting rod and the inner wall of the coaxial channel. As a preferred embodiment of the present invention, the bending unit includes support ring plates axially arranged along the scanning front end, and strain actuators disposed between adjacent support ring plates. As a preferred embodiment of the present invention, the strain actuator is a dielectric elastomer driving unit, which includes a dielectric elastomer film and a flexible electrode attached to a surface thereof, and the flexible electrode is connected with a wire by a serpentine wiring manner. As a preferable technical scheme of the invention, the strain actuating member is a steel wire traction structure and comprises at least three traction steel wires distributed along the circumferential direction of the support ring plate, the distal ends of the traction steel wires are fixed with the support ring plate at the forefront end, and the proximal ends of the traction steel wires are connected to a driving mechanism arranged at the rear end of the control. As a preferable technical scheme of the invention, the outer wall of the scanning front end is provided with elastic folds, and the outer wall of the control rear end is provided with a pluralit