CN215461267U - Catheter inner bridge and medical catheter - Google Patents
Catheter inner bridge and medical catheter Download PDFInfo
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- CN215461267U CN215461267U CN202121718420.5U CN202121718420U CN215461267U CN 215461267 U CN215461267 U CN 215461267U CN 202121718420 U CN202121718420 U CN 202121718420U CN 215461267 U CN215461267 U CN 215461267U
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Abstract
The utility model relates to the technical field of interventional therapy instruments and discloses an inner catheter bridge and a medical catheter. The catheter inner bridge is used for guiding the catheter body and comprises a flexible guide part and a flexible convex ring. The two ends of the flexible guide piece along the length direction are a first end and a second end; the flexible convex ring is fixedly arranged at the first end of the flexible guide part, the flexible convex ring is arranged on the side wall of the flexible guide part along the circumferential protruding ring of the flexible guide part, the flexible convex ring comprises annular conical surfaces arranged at two ends, the large ends of the two annular conical surfaces are connected with the side wall of the flexible convex ring, and the small ends of the two annular conical surfaces are arranged towards the opposite direction and are all connected with the side wall of the flexible guide part. The utility model reduces the gap between the catheter body and the flexible guide piece, reduces the influence of the edge effect on the vascular intervention operation, reduces the operation difficulty of an operator, saves the operation time and reduces the risk of a patient.
Description
Technical Field
The utility model relates to the technical field of interventional therapy instruments, in particular to an inner catheter bridge and a medical catheter.
Background
During the interventional vascular surgery, it is often necessary to move a catheter along a guide structure (a guide wire or a tiny catheter) to reach a lesion at the distal end of a blood vessel in order to establish a diagnostic and therapeutic pathway. As shown in fig. 1, when a blood vessel is tortuous, narrow and has a branch, the bore of the lumen of the catheter 1 ' is much larger than the diameter of the guiding structure, which is very likely to cause the catheter 1 ' and the guiding structure 2 ' to be eccentric, so that a larger gap is generated between the catheter 1 ' and the guiding structure 2 ', and a larger "step" is shown on the cross section. The side of the end of the catheter 1 'deviating from the guiding structure 2' is easily scratched with the blood vessel and is particularly easily hooked by the blood vessel bifurcation 3 ', so that the catheter 1' cannot be pushed forward, which is called as "window sill effect" or "edge effect". Especially, in the process of the nerve interventional therapy operation, the far end of the internal carotid artery section started by the opening of the ophthalmic artery section is a necessary path for the catheter to be conveyed to the far end part of the middle cerebral artery in the anterior circulation interventional therapy operation, so that the probability that the port of the catheter 1' is hooked at the branch point of the root part of the ophthalmic artery is very high, the operation difficulty of an operator is increased, the operation time is prolonged, the operation path establishment failure is even caused, the optimal rescue time of a patient is delayed, the benefit of the patient is reduced, and the risk of the patient is increased.
Accordingly, there is a need for an intra-catheter bridge and a medical catheter that solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide an intra-catheter bridge to reduce the influence of the edge effect on the vascular intervention operation, reduce the operation difficulty of the operator, save the operation time, and reduce the risk of the patient.
Another object of the present invention is to provide a medical catheter which reduces the operation difficulty of the operator, saves the operation time, and reduces the risk of the patient.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an intraductal bridge for guiding a catheter body, the intraductal bridge comprising:
the flexible guide piece is provided with a first end and a second end along the two ends of the length direction;
flexible bulge loop, fixed set up in the first end of flexible guide, flexible bulge loop is followed the circumference bulge loop of flexible guide is established on the lateral wall of flexible guide, flexible bulge loop is including setting up the cyclic annular conical surface at both ends, two the main aspects of cyclic annular conical surface with the lateral wall of flexible bulge loop is connected, two the tip of cyclic annular conical surface sets up towards opposite direction and all with the lateral wall of flexible guide is connected.
Preferably, the flexible convex ring is of a solid structure; or the flexible convex ring is of a saccular structure, and a filling medium is filled in the inner cavity of the flexible convex ring.
Preferably, the flexible guide with flexible bulge loop is just to the cover and is equipped with two at least development rings on the lateral wall, two at least development ring is followed the length direction interval of flexible guide sets up, and is located two at both ends development ring is just to two respectively the edge of the main aspects of cyclic annular toper face.
Preferably, the interval between the end part of the first end of the flexible guide part and the end part of the flexible convex ring facing the first end is 0-100 mm.
Preferably, the end of the first end of the flexible guide member and the flexible convex ring are arranged at intervals, and a developing ring is sleeved on the side wall of the end of the first end of the flexible guide member.
Preferably, the flexible convex ring is made of developing materials.
Preferably, the flexible guide is of tubular construction.
Preferably, the intraductal bridge further comprises a guide wire movably disposed through the lumen of the flexible guide.
Preferably, the flexible guide comprises a core wire having a wire winding helically wound around the outside thereof.
A medical catheter comprises a catheter body and the catheter inner bridge, wherein the catheter inner bridge is movably arranged in the catheter body in a penetrating mode.
The utility model has the beneficial effects that:
according to the catheter inner bridge provided by the utility model, the flexible convex ring is convexly arranged on the side wall of the end part of the flexible guide part, so that the outer diameter of the flexible convex ring is larger than that of the flexible guide part, when the catheter body is sleeved on the flexible convex ring, the gap between the catheter body and the flexible convex ring is smaller, the influence of the edge effect on a vascular intervention operation is reduced, the operation difficulty of an operator is reduced, the purpose of quickly establishing a treatment channel is achieved, the operation time is saved, and the risk of a patient is reduced. And the annular conical surface at the first end of the flexible guide piece avoids the edge of the flexible convex ring from scratching the vessel wall, and the other annular conical surface is favorable for guiding the catheter body to be sleeved outside the flexible convex ring, so that the influence of the edge effect on the vessel intervention operation is further reduced, and the operation difficulty of an operator is reduced.
The medical catheter provided by the utility model adopts the catheter inner bridge, so that the operation difficulty of an operator is reduced, the operation time is saved, and the risk of a patient is reduced.
Drawings
FIG. 1 is a schematic view of a catheter in a vessel according to the prior art;
FIG. 2 is a schematic structural diagram of a medical catheter according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a medical catheter in a blood vessel according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an intra-catheter bridge according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a medical catheter in a blood vessel according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intra-catheter bridge according to a second embodiment of the present invention.
In the figure:
1', a conduit; 2', a guide structure; 3', a vessel bifurcation site;
20. a catheter body;
1. a flexible guide; 2. a flexible convex ring; 3. a developing ring; 4. a stress relief tube; 5. a connecting seat.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Example one
The embodiment provides an intraductal bridge and a medical catheter. As shown in fig. 2-3, the medical catheter includes a catheter body 20 and an intra-catheter bridge, the intra-catheter bridge is used for guiding the catheter body 20, and the intra-catheter bridge is movably disposed through the catheter body 20.
Specifically, as shown in fig. 4, the intra-catheter bridge includes a flexible guide 1 and a flexible convex ring 2. The two ends of the flexible guide part 1 along the length direction are a first end and a second end; the flexible convex ring 2 is fixedly arranged at the first end of the flexible guide part 1, the flexible convex ring 2 is arranged on the side wall of the flexible guide part 1 along the circumferential protruding ring of the flexible guide part 1, the flexible convex ring 2 comprises annular conical surfaces arranged at two ends, the large ends of the two annular conical surfaces are connected with the side wall of the flexible convex ring 2, and the small ends of the two annular conical surfaces are arranged towards the opposite direction and are all connected with the side wall of the flexible guide part 1. It will be understood that the larger end of the annular tapered surface refers to the larger diameter end, and similarly, the smaller end of the annular tapered surface refers to the smaller diameter end. In the present embodiment, the first end of the flexible guide 1 is a front end and the second end is a rear end. The flexible convex ring 2 is convexly arranged on the side wall of the end part of the flexible guide part 1, so that the outer diameter of the flexible convex ring 2 is larger than that of the flexible guide part 1, when the catheter body 20 is sleeved on the flexible convex ring 2, the gap between the catheter body 20 and the flexible convex ring 2 is smaller, the influence of the edge effect on the blood vessel interventional operation is reduced, the operation difficulty of an operation operator is reduced, the purpose of quickly establishing a treatment passage is achieved, the operation time is saved, and the risk of a patient is reduced. And the annular conical surface at the first end avoids the edge of the flexible convex ring 2 from scratching the vessel wall, and the other annular conical surface is favorable for guiding the catheter body 20 to be sleeved outside the flexible convex ring 2, so that the influence of the edge effect on the vessel intervention operation is further reduced, and the operation difficulty of an operator is reduced.
In this embodiment, the pipe inner bridge still includes stress release pipe 4 and connecting seat 5, and the second end and the connecting seat 5 of flexible guide 1 are connected, and stress release pipe 4 coaxial cover is established at the second end of flexible guide 1, is the toper, and the main aspects is connected with connecting seat 5, and the tip is connected with the outer wall of flexible guide 1, has avoided the junction between flexible guide 1 and the connecting seat 5 because stress concentration and fracture. The connecting socket 5 can be connected with other medical equipment, and the structure thereof belongs to the prior art, and is not limited herein.
In this embodiment, the flexible guide member 1 is a tubular structure, and the axis of the flexible guide member 1 is arranged along the length direction, so that the flexible guide member can be used for injecting medicine or other liquid into the blood vessel, and the practicability is improved.
Further, flexible bulge loop 2 is the column, and its external diameter slightly is less than the internal diameter of pipe body 20 to with the coaxial setting of flexible guiding piece 1, guaranteed that the distance of the lateral wall protrusion of flexible bulge loop 2 in flexible guiding piece 1 lateral wall is the same along circumference homogeneous phase, guaranteed that the lateral wall of flexible bulge loop 2 can produce the same pressure to the blood vessel, avoided because the blood vessel that certain side of blood vessel received the too big blood vessel that leads to breaks, guaranteed the security.
Further, the tube wall of the tubular flexible guide 1 comprises a three-layer structure, namely an inner layer tube wall, a middle layer tube wall and an outer layer tube wall in sequence. Wherein, the inner layer tube wall is made of a material with low friction coefficient, which is convenient for guiding the motion of the wire, and is preferably Polytetrafluoroethylene (PTFE); the intermediate layer pipe wall is made by weaving, and can be made of stainless steel metal wires, nickel-titanium metal wires or reinforced polymer fibers and the like, and the specific weaving mode can be a grid weaving mode or a spring weaving mode, and is not limited herein; the outer layer pipe wall is formed by compounding multiple sections of high polymer materials with different hardness, and the multiple sections of materials are sequentially connected along the axial direction, such as nylon, Pebax, TPU and other materials with different hardness. The specific structure of the tubular flexible guide 1 can be implemented by the prior art and will not be further described herein.
Still further, the tubular flexible guide part 1 has an inner diameter ranging from 0.015 to 0.038 inch, an outer diameter ranging from 0.017 to 0.055 inch, and an effective length ranging from 50 to 170 cm. Wherein the effective length is the length between the end of the first end of the flexible guide 1 to the small end of the stress relief tube 4.
Preferably, the flexible convex ring 2 is of a solid structure, which ensures the structural strength and the supporting function of the flexible guide 1, so that the flexible guide 1 can move in the blood vessel. The flexible convex ring 2 can be made of soft materials such as plastics and polymers, and is not limited to nylon, Pebax, TPU, silica gel and the like. When the flexible convex ring 2 adopts a solid structure, the flexible convex ring 2 is of an integrated structure. In some embodiments, the flexible convex ring 2 may also be a bag-shaped structure, and the inner cavity of the flexible convex ring 2 is filled with a filling medium, which may be gas or liquid, in which case the flexible convex ring 2 adopts a flexible outer shell, and the flexible outer shell adopts the above-mentioned materials.
Specifically, the flexible male ring 2 may be provided in two structures. In the first structure, the flexible convex ring 2 comprises an annular flexible casing, the cross section of the flexible casing is similar to a C shape, two ends of the flexible casing along the axial direction are directly fixed on the side wall of the flexible guide part 1, and an inner cavity is directly formed between the inner wall of the flexible casing and the side wall of the flexible guide part 1. The second structure, flexible bulge loop 2 is connected with the both ends of interior ring shell respectively including the annular flexible shell and the annular inner ring shell of coaxial setting, the both ends of flexible shell for form the inner chamber between flexible shell and the inner ring shell, the inner ring shell cover is located on flexible guide 1, and the inside wall of inner ring shell and the lateral wall laminating of flexible guide 1.
In this embodiment, the flexible guide member 1 and the flexible convex ring 2 are processed in a split manner, and the flexible convex ring 2 is directly fixed on the flexible guide member 1 and connected, so that the processing process is simplified, and the production cost is reduced. Specifically, both ends of the flexible protruding ring 2 are fixed on the side walls of the flexible guide 1 by laser welding, thermal welding, or adhesive bonding, respectively. The two ends of the flexible convex ring 2 are connected with the flexible guide part 1, so that the connecting structure arranged in the middle of the flexible convex ring 2 is avoided while the connecting strength between the flexible convex ring 2 and the flexible guide part 1 is ensured, the processing process is simplified, and the processing cost is reduced. And when the flexible convex ring 2 is arranged into the first sac-shaped structure, the structure that the two ends of the flexible convex ring 2 are connected with the flexible guide part 1 is arranged, and the formation of the inner cavity is also realized.
In other embodiments, when the flexible convex ring 2 is provided as a solid structure or a second kind of capsular structure, a plurality of connecting positions may also be provided along the length direction of the flexible convex ring 2, or glue is directly distributed between the inner sidewall of the inner ring shell of the capsular flexible convex ring 2 or the inner sidewall of the solid flexible convex ring 2 and the flexible guide 1, so as to further improve the connecting strength.
In other embodiments, the flexible convex ring 2 may be integrally disposed on the outer wall of the flexible guide 1, which is not limited herein.
Preferably, the side wall of the flexible guide 1 opposite to the flexible convex ring 2 is sleeved with at least two developing rings 3, that is, the developing rings 3 are arranged between the flexible guide 1 and the flexible convex ring 2, the developing rings 3 can display the position of the flexible convex ring 2, wherein the corresponding principle and structure of the developing rings 3 adopt the prior art, and are not described herein again. At least two developing rings 3 are arranged at intervals along the length direction of the flexible guide 1, wherein the two developing rings 3 at the two ends respectively correspond to the edges of the large ends of the two annular tapered surfaces, that is, the two developing rings 3 at the two ends respectively correspond to the connecting positions between the large ends of the two annular tapered surfaces and the side wall of the flexible convex ring 2. Because the two ends of the flexible convex ring 2 are respectively provided with the annular conical surfaces, the diameter from the outer side wall of the flexible convex ring 2 to the small end of the annular conical surface is gradually reduced, compared with the edge effect between the flexible convex ring 2 and the catheter body 20, the edge effect between the annular conical surface and the catheter body 20 is larger, so the axial length of the side wall of the flexible convex ring 2 can be set as the effective length of the flexible convex ring 2, namely the distance between the large sections of the two annular conical surfaces is the effective length of the flexible convex ring 2, therefore, the two developing rings 3 at the two ends respectively correspond to the edges of the large ends of the two annular conical surfaces, so that at least two developing rings 3 can display the effective length of the flexible convex ring 2, thereby being convenient for medical personnel to judge the position of the flexible convex ring 2 more accurately, being beneficial for the medical personnel to judge the time for moving the catheter body 20, the vessel laceration of the catheter body 20 caused by the edge effect is avoided, and the safety is ensured. Specifically, the diameter range of the outer side wall of the flexible convex ring 2 is 0.5-5 mm, and the effective length is 5-80 mm.
In this embodiment, two developing rings 3 are sleeved on the side wall of the flexible guide 1 opposite to the flexible convex ring 2, and the two developing rings 3 respectively correspond to the large ends of the two annular conical surfaces. In other embodiments, the number of the developing rings 3 may be adaptively adjusted, and the developing rings 3 may be closed ring-shaped or non-closed ring-shaped, which is not limited herein.
Specifically, the interval between the end of the first end of the flexible guide 1 and the end of the flexible convex ring 2 facing the first end is 0-100 mm. That is, the end of the first end of the flexible guide 1 and the end of the flexible convex ring 2 facing the first end may be spaced apart or flush with each other. Further, the first end of the flexible guide part 1 protrudes out of the end of the flexible convex ring 2, namely, the interval is larger than 0, when the flexible convex ring 2 of the intra-catheter bridge is arranged at the end of the bifurcated blood vessel, the first end of the flexible guide part 1 already extends into the bifurcated blood vessel, the length of the intra-catheter bridge extending into the bifurcated blood vessel is increased, the intra-catheter bridge is prevented from being separated from the bifurcated blood vessel due to the reasons of heartbeat vibration or blood impact, and the stability of the intra-catheter bridge in guiding the catheter body 20 is improved. In other embodiments, the first end of the flexible guide 1 and the end of the flexible male ring 2 may be flush.
Still further, when the end portion of the first end of the flexible guide 1 and the end portion of the flexible convex ring 2 facing the first end are spaced apart from each other, that is, the above-mentioned spacing is greater than 0, the sidewall of the end portion of the first end of the flexible guide 1 is sleeved with the developing ring 3. Because in the process of guiding the catheter body 20, the first end of the flexible guide part 2 is positioned at the front end of the whole catheter inner bridge, the developing ring 3 is arranged at the first end of the flexible guide part 2, the position of the end part of the first end of the flexible guide part 1 can be displayed, and the observation of medical staff is facilitated. When the end of the first end of the flexible guide 1 is flush with the end of the flexible convex ring 2 facing the first end, that is, the interval is 0, the developing ring 3 may not be fitted on the sidewall of the first end of the flexible guide 1.
Further, the flexible convex ring 2 is made of developing materials, the position of the flexible convex ring 2 can be comprehensively displayed, the developing area is larger than the developing ring 3, observation is facilitated, and the observation accuracy is guaranteed.
Specifically, a corresponding material, such as barium sulfate Ba, can be added to the flexible material2SO4Bismuth oxide Bi2O3Tungsten powder, etc. When the flexible convex ring 2 is a solid structure, the flexible convex ring can be directly made of a flexible material added with a developing material. When the flexible convex ring 2 is of a bag-shaped structure, the flexible shell of the flexible convex ring 2 can be made of a flexible material added with a developing material, and when the filling medium is liquid, the developing material can be mixed in the filling medium.
For ease of understanding, the present embodiment provides a medical catheter using process as follows:
first, the flexible guide 1 is moved forward along the vessel until the flexible torus 2 is at the end of the bifurcated vessel. Then, the catheter body 20 is pushed forward until the catheter body 20 is sleeved on the outer side wall of the flexible convex ring 2. Finally, the flexible guide 1 and the catheter body 20 are pushed simultaneously forward, moving towards the surgical site.
Preferably, the intra-catheter bridge may further comprise a wire-shaped guide movably disposed through the lumen of the flexible guide 1, the wire-shaped guide serving to guide the flexible guide 1, and the flexible guide 1 serving to support the wire-shaped guide. When the catheter inner bridge is used, the filiform guide piece is firstly extended out from the first end of the flexible guide piece 1, the filiform guide piece is moved forwards for a preset distance, then the flexible guide piece 1 is moved for the preset distance along the filiform guide piece, and the process is repeated until the flexible convex ring 2 is moved to the end part of the branched blood vessel. Because the filiform guide piece is thinner, the guide piece is easier to bend when encountering a branched blood vessel, the flexible guide piece 1 can be ensured to be guided into a target blood vessel, the guiding function of the intra-catheter bridge is further ensured, and the reliability of the intra-catheter bridge is improved. Preferably, the wire-like guide may be made of an oxidation and corrosion resistant material.
Example two
The present embodiment provides an intra-catheter bridge and a medical catheter, and compared with the first embodiment, the structure provided in the present embodiment is basically the same as that of the first embodiment, and only the arrangement of the flexible guide 1 in the intra-catheter bridge is different, and the structure the same as that of the first embodiment is not described again in the present embodiment.
As shown in fig. 5 and 6, in the present embodiment, the flexible guide 1 is provided in a filamentous structure, which is more flexible, is easily bent, and has a smaller diameter. Preferably, the flexible guide member 1 comprises a core wire arranged along the length direction of the flexible guide member, and a winding wire is spirally wound outside the core wire, so that the structural strength of the flexible guide member 1 is ensured to a certain extent, and the flexible guide member 1 is prevented from being too soft. The outer diameter range of the flexible guide part 1 is 0.012-0.038 inches, and the effective length is 80-350 cm.
Specifically, the flexible guide 1 may be made of stainless steel or nitinol, and the core wire and the winding wire may be made of the same material. In order to reduce the resistance of the flexible guide 1 in the blood vessel, a coating may be provided on the outer side of the flexible guide 1, and PTFE may be used as the coating. In fig. 5 and 6, the first end of the flexible guide 1 faces the left side, and the coating layer on the flexible guide 1 on the left side of the flexible convex ring 2 and the developing ring 3 on the end of the flexible guide 1 are not shown.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An intraductal bridge for guiding a catheter body (20), the intraductal bridge comprising:
the flexible guide piece (1) is provided with a first end and a second end along the length direction;
flexible bulge loop (2), fixed set up in the first end of flexible guide (1), flexible bulge loop (2) are followed the circumference bulge loop of flexible guide (1) is established on the lateral wall of flexible guide (1), flexible bulge loop (2) are including setting up the cyclic annular conical surface at both ends, two the main aspects of cyclic annular conical surface with the lateral wall of flexible bulge loop (2) is connected, two the tip of cyclic annular conical surface sets up towards opposite direction and all with the lateral wall of flexible guide (1) is connected.
2. The intraductal bridge according to claim 1, characterized in that the flexible male ring (2) is of solid construction; or the flexible convex ring (2) is of a saccular structure, and a filling medium is filled in the inner cavity of the flexible convex ring (2).
3. The conduit inner bridge according to claim 1, wherein at least two developing rings (3) are sleeved on the side wall of the flexible guide member (1) opposite to the flexible convex ring (2), at least two developing rings (3) are arranged at intervals along the length direction of the flexible guide member (1), and the two developing rings (3) at two ends are respectively opposite to the edges of the large ends of the two annular conical surfaces.
4. The intraductal bridge of claim 1, characterized in that the spacing between the end of the first end of the flexible guide (1) and the end of the flexible male ring (2) facing the first end is 0-100 mm.
5. The intraductal bridge of claim 4, characterized in that the end of the first end of the flexible guide (1) is spaced from the flexible protruding ring (2), and the side wall of the end of the first end of the flexible guide (1) is sleeved with a developing ring (3).
6. The intraconduit bridge according to claim 1, wherein the flexible convex ring (2) is made of developing material.
7. The intraductal bridge of any one of claims 1-6, wherein the flexible guide (1) is of tubular construction.
8. The endocatheter bridge according to claim 7, further comprising a guide wire movably disposed through a lumen of the flexible guide (1).
9. The intraductal bridge according to any one of claims 1-6, wherein the flexible guide (1) comprises a core wire, which is externally helically wound with a winding wire.
10. A medical catheter, comprising a catheter body (20) and an intraductal bridge according to any one of claims 1-9 movably disposed through the catheter body (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121718420.5U CN215461267U (en) | 2021-07-27 | 2021-07-27 | Catheter inner bridge and medical catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121718420.5U CN215461267U (en) | 2021-07-27 | 2021-07-27 | Catheter inner bridge and medical catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215461267U true CN215461267U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121718420.5U Active CN215461267U (en) | 2021-07-27 | 2021-07-27 | Catheter inner bridge and medical catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215461267U (en) |
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2021
- 2021-07-27 CN CN202121718420.5U patent/CN215461267U/en active Active
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