CN217286859U - Catheter capable of being plugged - Google Patents
Catheter capable of being plugged Download PDFInfo
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- CN217286859U CN217286859U CN202220936590.9U CN202220936590U CN217286859U CN 217286859 U CN217286859 U CN 217286859U CN 202220936590 U CN202220936590 U CN 202220936590U CN 217286859 U CN217286859 U CN 217286859U
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- catheter
- expandable
- catheter body
- plugging component
- traction wire
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Abstract
The utility model discloses a plugging catheter, which comprises a catheter body, wherein the catheter body comprises a catheter near end and a catheter far end which can be implanted into a body, the catheter far end of the catheter body is provided with an expandable plugging component which can radially expand, the expandable plugging component near end is fixedly connected with the catheter body, the far end is movably connected with the catheter body, the plugging catheter also comprises a traction wire which is arranged in the same direction with the catheter body, and the far end of the traction wire penetrates through the expandable plugging component near end and then is fixedly connected with the expandable plugging component far end; the utility model discloses a but with the formula shutoff part that can expand radially that sets up on the pipe body to but through the expansion deformation of the formula shutoff part that can expand of traction wire control with reply the shrink certainly, it is more convenient that can shutoff pipe uses, controls more in a flexible way, need not the gasbag, and stability is better, and the safety in utilization is better, reduces pipe body diameter, is suitable for the blood vessel of various diameters.
Description
Technical Field
The utility model relates to a technical field of pipe, especially the technical field that can shutoff pipe.
Background
Multiple means are commonly used for removing the endovascular embolism, namely, the thrombus is dissolved by a medicament pouring mode, and the endovascular embolism is withdrawn by a thrombus removal support in a dragging mode, with or without balloon-assisted vasodilation; another is to withdraw the endovascular plug into the catheter using a suction catheter, either manually or automatically. Several approaches are combined into a very promising system: the thrombus is first dissolved or dragged by chemical or mechanical means, further in combination with the aspiration function of the catheter, and the emboli are retrieved into the catheter and subsequently removed from the blood vessel. The key to achieving this technique is to retrieve the emboli as completely as possible and maximize aspiration efficiency, with the vessel being completely interrupted, and higher aspiration efficiency being achieved with catheters having larger calibers and lumens.
In clinical practice, a balloon guide catheter is often used for assisting in mechanical thrombus removal, and a liquid-filled balloon is often used for assisting in blood flow interruption and further combining with suction and/or mechanical thrombus removal. The existing products at foreign countries include a FlowGate balloon guide catheter produced by Stryker in the united states, a Cello balloon guide catheter produced by EV3 in the united states, and the like, and the chinese utility model with publication number CN211460348U provides a blood vessel plugging device for injecting therapeutic substances after plugging a target site, wherein the therapeutic substances at least include solid therapeutic substances, the blood vessel plugging device includes a catheter and a balloon, the catheter includes an inner tube and an outer tube, the inner tube is arranged in the outer tube and coaxially arranged, a cavity is formed between the inner tube and the outer tube, liquid or gas filling the balloon is used for being introduced into the cavity, and the inner tube is used for injecting the therapeutic substances. However, the balloon guide catheter has the outer diameter of the outer tube larger due to the balloon, so that the catheter cannot enter a small distal blood vessel and the suction efficiency of the catheter is limited.
Disclosure of Invention
The utility model aims at solving the problem in the prior art, providing a but shutoff pipe, through traction wire control shutoff pipe, need not the gasbag.
In order to achieve the above object, the present invention provides a blockable catheter, including a catheter body, the catheter body includes a proximal end and a distal end, the distal end of the catheter is provided with a radially expandable blockage member, the proximal end of the expandable blockage member is fixedly connected to the catheter body, the distal end of the expandable blockage member is movably connected to the catheter body, and the catheter further includes a pull wire arranged in the same direction as the catheter body, the distal end of the pull wire penetrates through the proximal end of the expandable blockage member and then is fixedly connected to the distal end of the expandable blockage member; the traction wire moves towards the proximal end of the catheter body, and the distal end of the expandable occlusion component is stressed to cause the expandable occlusion component to expand and deform radially.
Preferably, the expandable plugging member is sleeved on the outer wall of the catheter body.
Preferably, the catheter body is provided with a cavity channel arranged along the axial direction of the catheter body, and the traction wire is slidably arranged in the cavity channel.
Preferably, the number of the traction wires is 2-6.
Preferably, the inflatable plugging member is a polymer elastic membrane provided on the surface of the catheter body.
Preferably, the expansion type plugging component is an expandable and deformable metal bracket which is made by weaving, cutting, coiling, splicing or integral molding.
Preferably, the expandable occlusion member includes a metal stent connected to the catheter body and a polymeric elastic membrane provided on a surface of the metal stent.
The utility model relates to a beneficial effect of shutoff pipe: the utility model discloses a but with the formula shutoff part that can expand radially that sets up on the pipe body to but through the expansion deformation of the formula shutoff part that can expand of traction wire control with reply the shrink certainly, but shutoff pipe use is more convenient, controls more in a flexible way, and stability is better, and the safety in utilization is better, reduces pipe body diameter, can enter into the distal end blood vessel of less diameter.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the expandable plugging member of the catheter in a contracted state.
Fig. 2 is a schematic view of the expandable plugging member of the catheter in an expanded state.
Fig. 3 is a schematic view of a main-view cross-sectional structure of an expandable plugging member of the catheter plugging device of the present invention in a contracted state.
Fig. 4 is a schematic view of a cross-sectional structure of an embodiment of an expandable occlusion member for occluding a catheter according to the present invention in a front view in an expanded state.
Fig. 5 is a schematic sectional view of an embodiment of an expandable occlusion member for occluding a catheter according to the present invention in a front expanded state.
Fig. 6 is a schematic view of a section structure of an expandable occlusion member in a three-expanded state according to an embodiment of the present invention.
Wherein: 1-a catheter body; 2-an expandable plugging member; 3, drawing wires; 11-lumen; 21-a metal stent; 22-high molecular elastic film.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1, 2, 3 and 4, the utility model relates to a plugging catheter, which comprises a catheter body 1, wherein the catheter body 1 comprises a proximal catheter end and a distal catheter end implanted in the body, and the distal catheter end of the catheter body 1 is provided with an expandable plugging component 2 capable of expanding radially. The proximal end of the expandable plugging component 2 is fixedly connected with the catheter body 1, the distal end of the expandable plugging component 2 is movably connected with the catheter body 1, the catheter further comprises a traction wire 3 which is arranged in the same direction as the catheter body 1, and the distal end of the traction wire 3 penetrates through the proximal end of the expandable plugging component 2 and then is fixedly connected with the distal end of the expandable plugging component 2; the traction wire 3 moves towards the near end of the catheter body 1, and the expandable plugging component 2 is stressed at the far end to cause radial expansion deformation. In this embodiment, the catheter body 1 is provided with the expandable plugging member 2 capable of expanding radially, and the expansion deformation and the self-recovery contraction of the expandable plugging member 2 are controlled by the traction wire 3, the expandable plugging member 2 is in a circular tube shape in a normal state, the expandable plugging member 2 is tightly attached to the catheter body 1 in a natural state, after the catheter body 1 is moved to a proper position, the traction wire 3 is pulled towards the near end, the traction wire 3 can drive the far end of the expandable plugging member 2 to be extruded towards the near end side, so that the middle part of the expandable plugging member 2 is stressed to expand radially, the outer wall of the expandable plugging member 2 is tightly attached to the inner wall of a blood vessel, and the blood flow blocking effect is achieved. But this application shutoff pipe uses more conveniently, and control is more nimble, need not the gasbag, and stability is better, and the safety in utilization is better, reduces 1 diameter of pipe body.
Referring to fig. 1 and 2, the expandable occlusion member 2 is sleeved on the outer wall of the catheter body 1.
Referring to fig. 3 and 4, the inflatable plugging member 2 is a polymer elastic membrane 22 disposed on the surface of the catheter body 1. The blood vessel surface-protecting cover has better fitness with blood vessels, smoother surface, foldable property, good elasticity and difficult damage.
Referring to fig. 3 and 4, the catheter body 1 is provided with a lumen 11 arranged along the axial direction thereof, and the traction wire 3 is slidably arranged in the lumen 11. The traction wire 3 is arranged on the inner wall of the cavity 11 to limit the sliding position of the traction wire 3, so that the traction wire 3 is prevented from damaging blood vessels, the cavity 11 is arranged on the side wall of the catheter body 1 in the embodiment, and the cavity 11 can also be arranged on the inner wall or the outer wall of the catheter body 1 in another optional embodiment.
Preferably, the catheter body 1 is a common three-layer tube, which can be a microcatheter, an intermediate catheter, a guiding catheter or other intravascular catheters, and the inner cavity can be used as a channel for medicines, contrast media, instruments and the like.
Preferably, the connection part of the distal end of the expansion-type plugging member 2 and the traction wire 3 is connected by means of bonding, welding, hot melting, mechanical connection and the like.
Example two:
referring to fig. 5, on the basis of the first embodiment, the difference between the present embodiment and the first embodiment is: the expansion type plugging part 2 is an expandable and deformable metal bracket 21 which is made by weaving, cutting, coiling, splicing or integral molding. The embodiment sets the expansion type plugging component 2 as an expansion bracket made of metal, and the expansion bracket has better supporting performance, difficult deformation and better stability.
Example three:
referring to fig. 6, on the basis of the first embodiment, the difference between the present embodiment and the first embodiment is: the expandable occlusion member 2 includes a metal stent 21 connected to the catheter body 1 and a polymer elastic membrane 22 provided on the surface of the metal stent 21. In the present embodiment, the metal stent 21 and the polymer elastic membrane 22 are bonded to each other, so that the expandable occlusion member 2 has the supporting performance and the deformation resistance of the metal stent 21, and the adhesiveness and the sealing performance of the polymer elastic membrane 22.
Referring to fig. 6, the number of the traction wires 3 is 2. In the embodiment, 2 traction wires 3 are arranged to control the expandable plugging component 2, so that the expandable plugging component 2 is uniformly stressed in the circumferential direction, the control is more convenient, and in another optional embodiment, a proper number of traction wires 3 can be set according to the requirement.
The utility model discloses the working process:
the utility model relates to a but shutoff pipe is in the course of the work, but hug closely pipe body 1 under the formula shutoff part 2 natural state of expanding, carry thrombus department along blood vessel with the distal end of pipe body 1, after pipe body 1 moves to suitable position, with the pulling wire 3 to the near-end pulling, the pulling wire 3 can drive the distal end of formula shutoff part 2 that can expand and extrude to near-end side, thereby make but 2 middle parts atress radial expansion of formula shutoff part of expanding open, the blood vessel inner wall is hugged closely to formula shutoff part 2 outer wall of expanding, play the effect of blocking the blood flow.
The utility model can be used with other auxiliary devices for thrombus extraction, such as a balloon dilatation catheter, a thrombus extraction bracket and the like, so that the embolus can be extracted more rapidly and completely.
When the middle catheter of the utility model is used for sucking the suppository, the middle catheter needs to be matched with other devices, such as a manual suction device with an injector or a mechanical automatic suction pump.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any is right the utility model discloses scheme after simply changing all belongs to the protection scope of the utility model.
Claims (7)
1. An occluder catheter comprising a catheter body (1), the catheter body (1) comprising a proximal catheter end and an implantable distal catheter end, the distal catheter end of the catheter body (1) being provided with a radially expandable occlusion member (2), characterized in that: the proximal end of the expandable plugging component (2) is fixedly connected with the catheter body (1), the distal end of the expandable plugging component is movably connected with the catheter body (1), the catheter further comprises a traction wire (3) which is arranged in the same direction as the catheter body (1), and the distal end of the traction wire (3) penetrates through the proximal end of the expandable plugging component (2) and then is fixedly connected with the distal end of the expandable plugging component (2); the traction wire (3) moves towards the near end of the catheter body (1), and the far end of the expandable plugging component (2) is stressed to cause the expandable plugging component to expand and deform in the radial direction.
2. The occluderable catheter of claim 1, wherein: the expandable plugging component (2) is sleeved on the outer wall of the catheter body (1).
3. The occluderable catheter of claim 1, wherein: the catheter body (1) is provided with a cavity (11) arranged along the axial direction of the catheter body, and the traction wire (3) is slidably arranged in the cavity (11).
4. The occluderable catheter of claim 1, wherein: the number of the traction wires (3) is 2-6.
5. The occluderable catheter of claim 1, wherein: the expansion type plugging component (2) is a high molecular elastic membrane (22) arranged on the surface of the catheter body (1).
6. The occluderable catheter of claim 1, wherein: the expansion type plugging component (2) is an expandable and deformable metal bracket (21) which is made by weaving, cutting, coiling, splicing or integral forming.
7. The occluderable catheter of claim 1, wherein: the expandable plugging component (2) comprises a metal bracket (21) connected with the catheter body (1) and a macromolecule elastic membrane (22) arranged on the surface of the metal bracket (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220936590.9U CN217286859U (en) | 2022-04-22 | 2022-04-22 | Catheter capable of being plugged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220936590.9U CN217286859U (en) | 2022-04-22 | 2022-04-22 | Catheter capable of being plugged |
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| Publication Number | Publication Date |
|---|---|
| CN217286859U true CN217286859U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220936590.9U Active CN217286859U (en) | 2022-04-22 | 2022-04-22 | Catheter capable of being plugged |
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| CN (1) | CN217286859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169568A1 (en) * | 2023-02-14 | 2024-08-22 | 上海科罡医疗技术有限公司 | Pulling control apparatus for vascular closure device |
-
2022
- 2022-04-22 CN CN202220936590.9U patent/CN217286859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169568A1 (en) * | 2023-02-14 | 2024-08-22 | 上海科罡医疗技术有限公司 | Pulling control apparatus for vascular closure device |
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