CN212547915U - Lateral directional interventional catheter for difficult-angle branch arterial intubation - Google Patents
Lateral directional interventional catheter for difficult-angle branch arterial intubation Download PDFInfo
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- CN212547915U CN212547915U CN202020462907.0U CN202020462907U CN212547915U CN 212547915 U CN212547915 U CN 212547915U CN 202020462907 U CN202020462907 U CN 202020462907U CN 212547915 U CN212547915 U CN 212547915U
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- side hole
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Abstract
The utility model discloses a lateral directional intervention catheter for difficult angle branch arterial intubation, which comprises a catheter, wherein the two ends of the catheter are respectively a guiding end and a holding end; a tongue-shaped section with a part of free is made on the wall of the catheter close to the leading-in end, the joint of the tongue-shaped section and the wall of the catheter faces the leading-in end, the free part faces the holding end, the free part of the tongue-shaped side hole section is pressed downwards in the radial direction of the inner cavity of the catheter to form a side hole with an elastic guide valve, and the focus of the guide valve is propped against the inner wall of the catheter; the directional interventional catheter is matched with a J-shaped head guide wire for use, and when the guide wire enters from the leading-in end, the guide wire can pass through the whole length of the catheter cavity body; if the guide wire advances from the holding end in the opposite direction, when the guide valve is encountered, the guide wire can stably extend out of the catheter cavity from the side hole of the catheter in a large angle, so that the difficulty of the catheter insertion in the conventional arterial cannula interventional operation process is reduced, and the operation is more convenient and easier to control.
Description
Technical Field
The utility model relates to the field of medical equipment articles for use and medical technology, concretely relates to side directional intervention pipe for difficult angle branch artery intubation.
Background
Angiographic examination is a novel examination technology widely used in diagnosis and treatment of various peripheral vascular diseases in the last 90 th century, and is more and more clinically applied with the maturity and convenience of the technology. The general operation method comprises the following steps: 1) the femoral artery is used as a blood vessel access, the right femoral artery is generally selected, an arterial sheath is placed through femoral artery puncture, a pigtail catheter is placed at the beginning of an aortic arch along a blood vessel path under the guidance of a guide wire, a side hole is arranged at the far end close to the pigtail catheter, the guide wire is withdrawn, then the catheter is pushed and injected by a high-pressure injector to quickly emit iodine-containing contrast agent, a continuous uninterrupted radiography is carried out on the blood vessel track passed by the contrast agent, the shape of the blood vessel is obtained through computer-aided imaging, and the blood vessel is also called as Digital Subtraction Angiography (DSA), and each branch blood vessel of the aorta and the superior arch artery is fully displayed. 2) The target artery is selected according to the radiography result, after the pigtail catheter is withdrawn, the interventional catheter and the guide wire are matched to guide the descending target artery to be intubated, and then the intubated catheter is placed into the single-bend radiography catheter (without a side hole near the elbow) through the guide wire exchange, the super-selective artery radiography is carried out on the target artery, the shape and the pathological change condition of the artery can be well displayed through the radiography, the vascular interventional therapy is further facilitated, and the purpose of diagnosing and treating vascular diseases is achieved.
However, the intubation of the target artery usually requires selecting an appropriately-shaped interventional catheter according to the angle and the shape of the target branch artery and the aorta according to the contrast result for successful intubation. At present, the branch arterial cannula with difficult angle is mostly operated by a catheter with complex bending head end shape, such as cobra, Simmon, hunter head, and the like. When the operation is carried out, the guide wire is firstly placed near the opening of the target artery, the catheter stretches along the guide wire and reaches the vicinity of the opening of the target artery, the head end of the catheter restores to be naturally bent when the guide wire is retreated, and then the catheter is operated to twist to form a certain angle or is retreated and bounced to enter the target artery. The operation is difficult to accurately predict the extending position of the guide wire, is difficult to control, and is complex and not easy to succeed. The existing complex bent catheter can only be suitable for operation in a large blood vessel cavity (the diameter is more than 8mm), and if the diameter of the operated blood vessel cavity is small, the catheter cannot be naturally bent in the blood vessel cavity to form a certain angle, and the target blood vessel cannot be selected; and when the catheter bounces into a branch vessel, plaque on the vessel wall is easy to scrape off, so that the far end of the vessel is embolized. In addition, for the blood vessel which forms a right angle or a larger angle with the main blood vessel, in practice, the guide wire or the guide wire which just enters the opening of the blood vessel is often popped out of the target blood vessel due to the action of the back-to-back stress, so that the position is lost, the implantation is difficult, and the stability is poor.
SUMMERY OF THE UTILITY MODEL
To the technical problem that above-mentioned exists, the utility model provides a side orientation intervenes pipe for difficult angle branch artery intubate solves current intervention pipe difficult control, is not suitable for the operation of little vascular cavity, and the blood wall plaque is scraped off easily in the pipe spring leads to vascular distal end embolism, and the pipe seal wire path stability of putting into is poor, is the problem of great angle branch vessel intubate difficulty with main road blood vessel.
In order to realize the purpose, the utility model discloses the technical scheme who takes is:
a lateral directional interventional catheter for difficult-angle branch arterial intubation comprises a catheter, wherein a guide end and a holding end are respectively arranged at two ends of the catheter; a tongue-shaped section with a part of free is made on the wall of the catheter close to the guide end, the joint of the tongue-shaped section and the wall of the catheter faces the guide end, the free part faces the holding end, the free part of the tongue-shaped section is pressed down in the radial direction of the inner cavity of the catheter to form a side hole of a guide valve with an elastic inclined surface, and the focus of the guide valve is abutted against the inner wall of the catheter.
Further, the above-mentioned side directional interventional catheter for difficult angle branch arterial cannulas is provided with radiopaque markers on the catheter wall facing the side holes.
Further, the side directional interventional catheter for the difficult-angle branch arterial cannula has the focus of the side hole 5-8cm away from the introduction end.
Further, the above-mentioned side directional interventional catheter for difficult angle branch arterial intubation is a linear catheter.
Further, the lateral directional interventional catheter for the difficult-angle branch arterial cannula has the catheter body with uniform and same inner diameter which is larger than or equal to 6F.
Further, the above-mentioned side directional interventional catheter for difficult angle branch arterial cannula has a hole diameter of more than 1.1mm and a hole diameter of no more than one fourth of the circumference of the catheter.
The embodiment of the utility model provides a beneficial effect is:
1. the pipe sets to the linear type, and the direction of easy rotation control pipe side opening during the pipe operation is difficult for taking place the scratch simultaneously when the rotation in vascular chamber, has avoided the pipe to twist reverse in the vascular chamber in the past, the spring gets into the branch vessel and easily scrapes the vascular wall plaque, arouses the problem of vascular embolism.
2. The side hole of the catheter is provided with the elastic slope guide flap and the radiopaque mark, so that the side hole can be identified in the operation, and the extending direction of the guide wire from the side hole of the catheter can be predicted and controlled, thereby completing the over-selection work of the branch blood vessel with difficult angle, reducing the difficulty and the operation time for placing the guide wire of the catheter in the branch blood vessel with large angle, and improving the operation safety.
3. After the branch vessel guide wire is placed, a corresponding micro-catheter can be placed along the guide wire, the micro-catheter intussusception guide wire and the lateral directional interventional catheter are in a T-shaped structure, the placement stability of the guide wire of the catheter is improved, and the guide wire of the catheter is not easy to pop out from a vessel opening to lose a vessel path.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a schematic view of the lateral directional interventional catheter of the present invention penetrating along the guide wire from the introduction end (a);
fig. 3 is a schematic view of the guide wire of the present invention being withdrawn to the rear of the side hole and then advanced;
FIG. 4 is a cross-sectional view taken along plane D-D of FIG. 1;
FIG. 5 is a schematic view of the first step of the placement of the left subclavian artery of the invention in the case of an intra-mammary artery cannula;
FIG. 6 is a schematic view of the second step of the placement of the left subclavian artery of the invention in the mammary artery cannula;
fig. 7 is a schematic diagram of a third step of the placement of the left subclavian artery intubation tube according to the present invention.
Reference numerals in the drawings of the specification include: the device comprises a catheter 1, a leading-in end A, a holding end B, a side hole 2, a guide valve 3, a guide wire 4, a left subclavian artery 5, an internal mammary artery 6, a radiopaque marker 7 and a microcatheter 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: refer to fig. 1 to 4
The scheme provides a lateral directional interventional catheter for difficult-angle branch arterial intubation, which comprises a catheter 1, wherein the two ends of the catheter 1 are a leading-in end A and a holding end B respectively; a tongue-shaped section with a part of free is made on the wall of the catheter close to the leading-in end A, the joint of the tongue-shaped section and the wall of the catheter faces the leading-in end A, the free part faces the holding end B, the free part of the tongue-shaped section is pressed down in the radial direction towards the inner cavity of the catheter 1 to form a side hole 2 with an elastic inclined guide valve 3, and the focus of the guide valve 3 is abutted against the inner wall of the catheter 1.
Refer to fig. 5 to 7
The left subclavian artery 5 is cannulated using the catheter 1 for placement of the internal mammary artery 6:
first, a vascular sheath is placed at the femoral artery puncture, a conventional 0.035 ultra-smooth guidewire is passed through the aorta into the left subclavian artery 5 in conjunction with the catheter 1, the ultra-smooth guidewire 4 is left in the left subclavian artery 5 (fig. 5), and then the lateral positioning is performedThe interventional catheter 1 is placed into the cavity of the left subclavian artery 5 along the ultra-smooth guide wire 4 through the leading end A and reaches the vicinity of the opening of the internal mammary artery 6. When the lateral directional interventional catheter 1 is placed, the ultra-smooth guide wire 4 jacks up the guide valve 3 (refer to fig. 2) to penetrate through the whole catheter 1, meanwhile, the reference mark of the side hole 2 on the lateral interventional catheter 1 is aligned to a target blood vessel opening of an internal mammary artery 6 which is at a large angle with the subclavian artery 5 at the left side under the ray, then the ultra-smooth guide wire 4 is retreated or a 0.018J-shaped head guide wire (self-judged according to the condition in the operation) is replaced to the rear part of the guide valve 3 (refer to fig. 6), the jacked-up guide valve 3 is reset to form inclined plane plugging to the inner cavity of the lateral directional interventional catheter 1, the guide wire 4 is advanced again, and the guide wire 4J-shaped soft head is 90-degree from the side hole 20The horn is drilled (see fig. 3 and 7) and the guide wire 4 is directly advanced into the target vessel of the internal mammary artery 6. due to the stable "T" configuration of the side-pointing catheter and guide wire, a microcatheter 8 (or contrast catheter sized for the side hole 2) can be placed along the guide wire 4 into the internal mammary artery 6 for arteriography.
Example 2: with reference to fig. 2, 3 and 4
Compared with the embodiment 1, the difference is that the wall of the catheter 1 is provided with the radiopaque marker 7 facing the side hole 2, the radiopaque marker 7 is preferably triangular, and after the side interventional catheter 1 is placed in a body, the position of the side hole 2 in the body can be accurately known by the radiopaque marker 7, so that the side hole 2 can be quickly and accurately aligned to the target blood vessel of the internal mammary artery, the catheter 1 can be accurately controlled, the risk and complication incidence rate of an interventional operation can be reduced, and the operation safety can be improved. The specific marking may be sewn or affixed with any radiopaque material, such as a wire.
Example 3: refer to fig. 1 to 3
Compared with the embodiment, the difference is that the catheter 1 is a linear catheter, and can be set to be different and larger calibers and lengths according to different artery arch forms and target blood vessel angles, so that the comprehensive performance and the applicability of the lateral interventional catheter 1 are widened. The catheter 1 adopts different shapes (linear type or elbow type), and can be flexibly selected according to actual requirements.
Example 4: refer to FIG. 7
Compared with the above embodiment, the difference is that the inner diameter of the catheter 1 body is uniform and equal to or greater than 6F, and the catheter 1 with the inner diameter can accommodate a microcatheter or a contrast catheter with a corresponding outer diameter to be placed into the internal mammary artery along the guide wire after the guide wire is placed into the internal mammary artery 6. The aperture of the side hole 2 is larger than 1.1mm, and in order to ensure that the body of the catheter 1 is not easy to break off from the side hole, if the catheter 1 with larger inner diameter is adopted, the aperture of the side hole 2 is not larger than one fourth of the circumference of the catheter.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. A lateral directional interventional catheter for difficult-angle branch arterial intubation comprises a catheter (1), wherein a guide end (A) and a holding end (B) are respectively arranged at two ends of the catheter (1); the method is characterized in that: a tongue-shaped section with partial dissociation is made on the wall of the catheter close to the guide end (A), the connection part of the tongue-shaped section and the wall of the catheter faces the guide end (A), the dissociation part faces the holding end (B), the dissociation part of the tongue-shaped section presses downwards in the radial direction of the inner cavity of the catheter (1) to form a side hole (2) with an elastic inclined guide valve (3), and the focus of the guide valve (3) is abutted against the inner wall of the catheter (1).
2. The side-directed interventional catheter for difficult angle branch arterial cannulation of claim 1, wherein: the wall of the catheter (1) is provided with a radiopaque marker (7) facing the side hole (2).
3. The side-directed interventional catheter for difficult angle branch arterial cannulation of claim 1 or 2, wherein: the focal point of the side hole (2) is 5-8cm away from the leading-in end (A).
4. The side-directed interventional catheter for difficult angle branch arterial cannulation of claim 3, wherein: the conduit (1) is a linear conduit.
5. The side-directed interventional catheter for difficult angle branch arterial cannulation of claim 4, wherein: the inner diameters of the bodies of the guide pipes (1) are uniform and equal and are more than or equal to 6F.
6. The side-directed interventional catheter for difficult angle branch arterial cannulation of claim 5, wherein: the aperture of the side hole (2) is larger than 1.1mm, and the aperture of the side hole (2) is not larger than one fourth of the perimeter of the catheter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020462907.0U CN212547915U (en) | 2020-04-01 | 2020-04-01 | Lateral directional interventional catheter for difficult-angle branch arterial intubation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020462907.0U CN212547915U (en) | 2020-04-01 | 2020-04-01 | Lateral directional interventional catheter for difficult-angle branch arterial intubation |
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| Publication Number | Publication Date |
|---|---|
| CN212547915U true CN212547915U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020462907.0U Expired - Fee Related CN212547915U (en) | 2020-04-01 | 2020-04-01 | Lateral directional interventional catheter for difficult-angle branch arterial intubation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111666998A (en) * | 2020-06-03 | 2020-09-15 | 电子科技大学 | Endoscope intelligent intubation decision-making method based on target point detection |
| CN113304379A (en) * | 2021-05-20 | 2021-08-27 | 苏州大学附属第一医院 | Interventional catheter with side hole and coaxial microcatheter intubation method through side hole |
-
2020
- 2020-04-01 CN CN202020462907.0U patent/CN212547915U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111666998A (en) * | 2020-06-03 | 2020-09-15 | 电子科技大学 | Endoscope intelligent intubation decision-making method based on target point detection |
| CN111666998B (en) * | 2020-06-03 | 2022-04-22 | 电子科技大学 | Endoscope intelligent intubation decision-making method based on target point detection |
| CN113304379A (en) * | 2021-05-20 | 2021-08-27 | 苏州大学附属第一医院 | Interventional catheter with side hole and coaxial microcatheter intubation method through side hole |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |