CN219127921U

CN219127921U - Novel microcatheter with DSA nerve intervention gold marking function

Info

Publication number: CN219127921U
Application number: CN202222131727.6U
Authority: CN
Inventors: 罗凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-13
Filing date: 2022-08-13
Publication date: 2023-06-06
Anticipated expiration: 2032-08-13

Abstract

The utility model provides a novel DSA nerve interventional gold marking microcatheter. Including the pipe body, the one end of pipe body is fixed with the microcatheter near-end, and the one end of microcatheter near-end is fixed with the microcatheter far-end, the surface of microcatheter far-end is provided with fixed mark point, and the surface of microcatheter far-end just is located and is provided with first gold mark point, second gold mark point and third gold mark point between microcatheter near-end and the fixed mark point, the distance between first gold mark point and the second gold mark point is 10mm. The novel DSA nerve interventional gold marking microcatheter solves the problems that the caliber calibration and metal ball calibration tool cannot be used due to large measurement data errors, so that the diameter and the lesion length of a lesion segment blood vessel can be measured conveniently during operation, more accurate blood vessel data can be provided for doctors, and the doctors can conveniently select proper therapeutic equipment.

Description

Novel microcatheter with DSA nerve intervention gold marking function

Technical Field

The utility model relates to the field of medical appliances, in particular to a novel DSA nerve interventional gold marking microcatheter.

Background

DSA, digital subtraction angiography, is a vascular imaging technology for eliminating bone and soft tissue images by injecting contrast medium into blood vessels and digitally processing image information by using a computer, and along with the continuous popularization and popularization of interventional diagnosis and treatment technologies, the development of nerve intervention is faster and faster, and parameters such as the diameter, the length, the volume and the like of blood vessels are often required to be obtained to select proper medical instruments (such as catheters, guide wires, balloons, stents and the like) in the intracranial ischemic lesion treatment process, and before the vascular parameters are measured, the parameters of the blood vessels need to be measured by calibration.

While currently mainstream DSA devices provide measurement calibration tools with: three calibration tools, tube diameter calibration, distance calibration and metal ball calibration, such as tube diameter calibration: because the diameter of the catheter used in the operation is known, then the catheter is calibrated by data with known size in a radiography image, the diameter and the length of an unknown blood vessel are measured by using the data as reference quantification, the parameters of the measured blood vessel are obtained, firstly, a metal ball calibration tool is needed, and a metal ball with known size is needed to be placed beside the skull of a patient in the operation for calibration; the patient lies on the operating table, the metal ball is placed outside the patient, and because the plane of the metal ball is often not in the same plane with the blood vessel of the lesion of the patient, the phenomena of amplification, slight deformation and the like can occur when two objects are not in the same plane according to the DSA imaging principle, and thus, the measured parameters have errors; secondly, the pipe diameter calibration, the medical equipment for providing reference data for the pipe diameter calibration tool in the treatment process of the nerve intervention operation comprises: a contrast catheter, a guide catheter, and a microcatheter; contrast catheters are often used for calibration, and are used for contrast examination, but are often not used for treatment; the diameter of the guiding catheter marked is the inner diameter of the guiding catheter, the diameter calibrating tool of the DSA equipment can only identify the outer diameter of the guiding catheter, and the diameter of the inner diameter is used for representing the diameter of the outer diameter, so that the data obtained by finally measuring the blood vessel is smaller; the diameter of the micro-catheter is too small, the plastic of the tube wall component occupies larger area, the development is poor, the calibration tool cannot accurately identify the tube diameter of the micro-catheter, and the measured parameters have large errors; finally, the distance calibration tool is based on the principle that a section of reference catheter with a certain distance is led to the blood vessel of a lesion section along the blood vessel, a reference object with a known distance radio-opaque mark is located closest to a target blood vessel, a radio-opaque mark tube is clearly developed on DSA, the distance calibration tool is easy to identify when used for measuring blood vessel parameters, the accuracy is high, and no medical instrument with mark points on the market for distance calibration as reference data can be provided in the aspect of nerve intervention, so that a nerve intervention operation doctor cannot obtain effective and accurate blood vessel parameters in operation.

Therefore, it is necessary to provide a novel microcatheter with DSA nerve interventional gold marking function to solve the above technical problems.

Disclosure of Invention

The utility model provides a novel DSA nerve intervention gold marking microcatheter, which solves the problem that a nerve intervention operation doctor cannot obtain effective and accurate blood vessel parameters in operation.

In order to solve the technical problems, the novel microcatheter with the DSA nerve intervention gold marking function comprises a catheter body, wherein one end of the catheter body is fixedly provided with a microcatheter proximal end, one end of the microcatheter proximal end is fixedly provided with a microcatheter distal end, the surface of the microcatheter distal end is provided with a fixed marking point, and a first gold marking point, a second gold marking point and a third gold marking point are arranged on the surface of the microcatheter distal end and between the microcatheter proximal end and the fixed marking point;

the distance between the first gold mark point and the second gold mark point is 10mm, the distance between the second gold mark point and the third gold mark point is 10mm, and the distance between the third gold mark point and the fixed mark point is 20mm.

Preferably, the lengths of the fixed mark point, the first gold mark point, the second gold mark point and the third gold mark point are all 0.2mm.

Preferably, the length of the distal end of the microcatheter is 7cm.

Preferably, the length of the proximal end of the microcatheter is 8cm.

Preferably, the outer diameter of the distal end of the microcatheter is 0.9mm.

Preferably, the outer diameter of the proximal end of the microcatheter is 0.7mm.

Compared with the related art, the novel DSA nerve interventional gold marking microcatheter has the following beneficial effects:

the utility model provides a novel DSA nerve interventional gold marking microcatheter, which can measure parameters such as the length, the diameter and the like of a blood vessel by taking the distance between marking points as calibration reference data, can directly observe the mark point number occupied by the blood vessel on a DSA contrast image, and obtain the blood vessel length by the mark point number, thereby solving the problems that a pipe diameter calibration tool and a metal ball calibration tool cannot be used due to larger measurement data error and a distance calibration tool, facilitating the measurement of the blood vessel diameter and the lesion length of a lesion segment in operation, providing more accurate blood vessel data for doctors, and facilitating the doctors to select proper therapeutic equipment.

Drawings

FIG. 1 is a schematic diagram of a microcatheter with novel DSA neurointerventional golden marking function according to a preferred embodiment of the present utility model;

fig. 2 is a schematic view of the distal end of the microcatheter of fig. 1.

Reference numerals in the drawings: 1. microcatheter proximal end, 2, microcatheter distal end, 3, fixed mark point, 4, first golden mark point, 5, second golden mark point, 6, third golden mark point, 7, catheter body.

Detailed Description

The utility model will be further described with reference to the drawings and embodiments.

Referring to fig. 1-2, a novel DSA nerve interventional gold marking microcatheter includes a microcatheter body 7, wherein a microcatheter proximal end 1 is fixed at one end of the catheter body 7, a microcatheter distal end 2 is fixed at one end of the microcatheter proximal end 1, a fixed marking point 3 is arranged on the surface of the microcatheter distal end 2, the fixed marking point 3 is positioned at the end of the microcatheter distal end 2, a first gold marking point 4, a second gold marking point 5 and a third gold marking point 6 are arranged on the surface of the microcatheter distal end 2 and between the microcatheter proximal end 1 and the fixed marking point 3, the first gold marking point 4, the second gold marking point 5 and the third gold marking point 6 are all radio-opaque metal marking points, the first gold marking point 4, the second gold marking point 5 and the third gold marking point 6 are all fixed on the surface of the microcatheter distal end 2 in an embedded manner, and the structures of the microcatheter distal end 2 and the fixed marking point 3 are the same as those of a general nerve interventional gold marking microcatheter;

as shown in fig. 2, the distance between the first gold mark point 4 and the second gold mark point 5 is 10mm, the distance between the second gold mark point 5 and the third gold mark point 6 is 10mm, and the distance between the third gold mark point 6 and the fixed mark point 3 is 20mm.

The lengths of the fixed mark point 3, the first gold mark point 4, the second gold mark point 5 and the third gold mark point 6 are all 0.2mm, the length of the far end 2 of the micro-catheter is 7cm, the length of the near end 1 of the micro-catheter is 8cm, the outer diameter of the far end 2 of the micro-catheter is 0.9mm, and the outer diameter of the near end 1 of the micro-catheter is 0.7mm.

The novel microcatheter with DSA nerve intervention gold marking function provided by the utility model has the following working principle: under the condition that the performance and the operation of the microcatheter are not affected, the back of the surface of the distal end 2 of the microcatheter is provided with a fixed mark point 3, the first gold mark point 4, the second gold mark point 5 and the third gold mark point 6 are additionally arranged in an embedded mode, so that the distance between the first gold mark point 4 and the second gold mark point 5 is 20mm, the distance between the second gold mark point 5 and the third gold mark point 6 is 10mm, the distance between the third gold mark point 6 and the fixed mark point 3 is 10mm, the radiopaque metal mark points are easily identified by equipment software and naked eyes, the distance between the mark points is known, the radiopaque metal mark points can be used as raw data for distance calibration, the distance between the radiopaque metal mark points of the microcatheter in a contrast image is firstly measured by using a distance calibration tool as raw data for measuring calibration, parameters such as the diameter, the length and the like of a lesion blood vessel can also be directly placed in a lumen of the blood vessel to be measured, the number of the mark points on a DSA map is directly obtained, the length of the blood vessel is accurately obtained, and the length of the blood vessel can be accurately measured, and the data can be provided for a user by using the following operation data

In summary, in the neuro interventional operation process, because the intracranial blood vessel has a smaller diameter, between 1 mm and 3mm, the measurement data of the blood vessel is required to be very accurate, and the data measured by the pipe diameter calibration tool and the metal ball calibration tool easily have larger errors, and the distance calibration tool has no medical instrument which can be used as a calibration reference, so an operator often guesses the diameter and the length of the blood vessel according to experience and a contrast image to select the therapeutic instrument; based on the method, the gold mark tube on the periphery is referred to, on the basis of original radiopaque metal mark points at the head end of the microcatheter (a radiopaque metal mark point is arranged at the head end of the microcatheter is inserted into the microcatheter by a common nerve), three radiopaque metal mark points are added behind the radiopaque metal mark points at the head end of the microcatheter, so that the distance between the first gold mark point 4 and the second gold mark point 5 is 20mm, the distance between the second gold mark point 5 and the third gold mark point 6 is 10mm, the distance between the third gold mark point 6 and the fixed mark point 3 is 10mm, and because the distance between the radiopaque metal mark points is known, the length, the diameter and other parameters of a blood vessel can be measured by taking the distance between mark points as calibration reference data, and the number of mark points occupied by the blood vessel can be directly observed on a DSA contrast image, so that the length of the blood vessel can be obtained, and the problems that the tube diameter calibration tool and the metal ball calibration tool cannot be used due to the measurement data error are large and the distance calibration tool can be solved; therefore, the diameter and the lesion length of the lesion segment can be conveniently measured in the operation, more accurate blood vessel data can be provided for doctors, and the doctors can conveniently select proper therapeutic equipment.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The novel microcatheter with the DSA nerve intervention gold marking function is characterized by comprising a catheter body (7), wherein one end of the catheter body (7) is fixedly provided with a microcatheter proximal end (1), one end of the microcatheter proximal end (1) is fixedly provided with a microcatheter distal end (2), the surface of the microcatheter distal end (2) is provided with a fixed marking point (3), and a first gold marking point (4), a second gold marking point (5) and a third gold marking point (6) are arranged on the surface of the microcatheter distal end (2) and between the microcatheter proximal end (1) and the fixed marking point (3);

the distance between the first gold mark point (4) and the second gold mark point (5) is 10mm, the distance between the second gold mark point (5) and the third gold mark point (6) is 10mm, and the distance between the third gold mark point (6) and the fixed mark point (3) is 20mm.

2. The microcatheter with novel DSA nerve interventional golden marking function according to claim 1, wherein the lengths of the fixed marking point (3), the first golden marking point (4), the second golden marking point (5) and the third golden marking point (6) are all 0.2mm.

3. A novel DSA nerve interventional gold marking microcatheter according to claim 1, characterized in that the length of the distal end (2) of the microcatheter is 7cm.

4. A novel DSA nerve interventional gold marking microcatheter according to claim 1, characterized in that the length of the proximal end (1) of the microcatheter is 8cm.

5. A novel DSA nerve interventional gold marking microcatheter according to claim 1, characterized in that the outer diameter of the distal end (2) of the microcatheter is 0.9mm.

6. A novel DSA nerve interventional gold marking microcatheter according to claim 1, characterized in that the outer diameter of the proximal end (1) of the microcatheter is 0.7mm.