CN-121971783-A - Intestinal cavity segment filling controllable device for pre-operative T stage of colon cancer

CN121971783ACN 121971783 ACN121971783 ACN 121971783ACN-121971783-A

Abstract

A controllable device for filling intestinal lumen segments in a pre-operative period T of colon cancer relates to the technical field of medical instruments and comprises a central mandrel, wherein a flexible head end cap is arranged at the forefront end of the central mandrel, a proximal balloon inflation pipeline, a distal balloon inflation pipeline and a main pipeline which are mutually independent are arranged inside the central mandrel, the proximal balloon is sleeved on the central mandrel and communicated with the proximal balloon inflation pipeline, the distal balloon is sleeved on the central mandrel and positioned on the distal side of the proximal balloon and communicated with the distal balloon inflation pipeline, at least two main pipeline lateral openings are formed in the wall of the central mandrel between the proximal balloon and the distal balloon, and the main pipeline lateral openings are communicated with the main pipeline and are used for injecting contrast agent or physiological saline into a closed intestinal lumen segment between the two balloons. The proximal balloon and the distal balloon are filled synchronously at two ends of the target intestinal section to form a closed section, and contrast agent is uniformly injected into the lateral openings, so that the intestinal wall is fully unfolded and does not collapse, and the display definition of the five-layer structure of the intestinal wall is remarkably improved.

Inventors

YIN JIAJUN
CHENG NAN
Nie Zhequn
WU JU
CHANG YAOYUAN
YU DAN

Assignees

大连大学附属中山医院

Dates

Publication Date: 20260505
Application Date: 20260213

Claims (6)

1. The intestinal lumen segment filling controllable device for the pre-operative T stage of colon cancer is characterized by comprising a central mandrel (3), wherein the forefront end of the central mandrel (3) is provided with a flexible head end cap (1), a proximal balloon inflation pipeline (10), a distal balloon inflation pipeline (5) and a main pipeline (8) which are mutually independent are arranged inside the central mandrel (3), the proximal balloon (2) is sleeved on the central mandrel (3) and communicated with the proximal balloon inflation pipeline (10), a distal balloon (4) is sleeved on the central mandrel (3) and located on the far side of the proximal balloon (2) and communicated with the distal balloon inflation pipeline (5), at least two lateral openings (11) are formed in the wall of the central mandrel (3) between the proximal balloon (2) and the distal balloon (4), the lateral openings (11) are communicated with the main pipeline (8) and are used for filling a sealing saline or physiological saline between the intestinal lumen segments.
2. The intestinal tract filling controllable device for the pre-operative T-staging of colon cancer according to claim 1, characterized in that the proximal balloon inflation line (10) is connected with a proximal balloon inflation tube external connector (9), the distal balloon inflation line (5) is connected with a distal balloon inflation tube external connector (6), the main line is connected with a main line water external connector (7), and the three external connectors are mutually independent and all located at the device operation end.
3. The intestinal lumen segment filling controllable device for pre-operative T-staging of colon cancer according to claim 1, characterized in that the main pipe lateral openings (11) are two, symmetrically arranged on the left and right sides of the central core shaft (3), and are both located on the pipe segment between the proximal balloon (2) and the distal balloon (4).
4. The intestinal tract filling controllable device for the pre-operative T-staging of colon cancer according to claim 1, characterized in that the flexible head cap (1) is made of a medical polymer material, has a closed circular arc structure and is in seamless engagement with the proximal end of the central spindle (3).
5. The controllable device for intestinal tract filling for the pre-operative T-staging of colon cancer according to claim 1, characterized in that the central spindle (3) is made of medical grade rubber or medical polyurethane nickel-titanium memory alloy, has a length of 100-300 cm and an outer diameter of 3-7 mm, and the surface of the central spindle (3) is provided with a lubricating coating.
6. The controllable intestinal tract filling device for the pre-operative T-stage of colon cancer according to claim 1, wherein the proximal balloon (2) and the distal balloon (4) are both made of elastic medical polymer materials, and the outer diameters of the proximal balloon and the distal balloon after filling are 4-8 cm, so that a sealing and blocking can be formed in the intestinal tract, and the intestinal tract between the two balloons forms a closed chamber capable of being filled independently.

Description

Intestinal cavity segment filling controllable device for pre-operative T stage of colon cancer Technical Field The invention relates to the technical field of medical equipment, in particular to an intestinal cavity segment filling controllable device for a pre-operation T stage of colon cancer. Background The accurate diagnosis of the pre-operative T stage of colon cancer directly affects the choice of whether to have chemotherapy before surgery, the formulation of surgical protocols, and the prognosis evaluation of patients. The T stage is mainly based on the infiltration depth of tumor to each layer of intestinal wall, including mucosal layer T1, muscular layer T2, serosal lower layer T3 and adjacent organ T4. At present, the tumor infiltration range is evaluated clinically by means of imaging or endoscopic technology, but the colon anatomy structure is complex, the intestinal cavity is easy to collapse and is disturbed by peristalsis, so that the intestinal wall layered structure is difficult to clearly display in the prior art, and particularly, the identification of the T2 phase and the T3 phase is obviously difficult. High field strength MRI is the main means for noninvasive evaluation of colon cancer T stage at present, but the imaging quality is affected by intestinal peristalsis, fecal residues and intestinal wall collapse, motion artifact and signal to noise ratio reduction are often generated, the five-layer structure of the intestinal wall is unclear, and the identification accuracy of T2 and T3 stages is only 60% -80%. Although ultrasonic Enteroscopy (EUS) performs well in the stage of rectal cancer, it is difficult to reach the upper segment of the colon due to the hardness and length limitations of the lever, and has a limited range of applications. The common enteroscope can only observe the lesions of the mucous membrane layer, can not objectively evaluate the infiltration depth, relies on subjective experience of doctors, and has high error rate. Thus, there is a need for a technique that overcomes the collapse of the intestinal lumen, motion artifacts, and limitations of the scope of investigation to achieve accurate T-staging of a full colon tumor. Disclosure of Invention According to the technical problems that the image quality is disturbed by collapse and peristaltic movement of an intestinal cavity, the layered structure of the intestinal wall is difficult to clearly display, the identification accuracy of the T2 and T3 phases is insufficient, and the exploration range is limited in the pre-operation T stage of the colon cancer in the prior art, the controllable device for filling the intestinal cavity segments in the pre-operation T stage of the colon cancer is provided. The invention mainly utilizes the structural design that the proximal balloon, the distal balloon and the independent main pipeline are integrated on the central mandrel, and the main pipeline lateral opening is arranged on the pipe wall between the two balloons, thereby achieving the effects of forming a closed cavity in a colon target section and realizing uniform and controllable filling of contrast agent, effectively avoiding collapse of the intestinal cavity and loss of the contrast agent, remarkably improving the definition of the intestinal wall layered structure in an MRI image, and providing reliable imaging basis for the pre-operation T stage of colon cancer. The invention adopts the following technical means: The intestinal cavity segment filling controllable device for the pre-operative T stage of colon cancer comprises a central mandrel, wherein a flexible head end cap is arranged at the forefront end of the central mandrel, a proximal balloon inflation pipeline, a distal balloon inflation pipeline and a main pipeline which are mutually independent are arranged inside the central mandrel, the proximal balloon is sleeved on the central mandrel and communicated with the proximal balloon inflation pipeline, the distal balloon is sleeved on the central mandrel and positioned on the far side of the proximal balloon and communicated with the distal balloon inflation pipeline, at least two main pipeline lateral openings are formed in the central mandrel wall between the proximal balloon and the distal balloon, and are communicated with the main pipeline, and are used for injecting contrast agent or normal saline into a closed intestinal cavity segment between the two balloons. Further, the near-end balloon inflation pipeline is connected with a near-end balloon inflation pipe outer joint, the far-end balloon inflation pipeline is connected with a far-end balloon inflation pipe outer joint, the main pipeline is connected with a main pipeline water pumping outer joint, and the three outer joints are mutually independent and are all positioned at the device operation end. Further, the lateral holes of the main pipeline are two, are symmetrically arranged on the left side and the right side of the central mandre