CN115252051A - Suction catheter - Google Patents
Suction catheter Download PDFInfo
- Publication number
- CN115252051A CN115252051A CN202210965231.0A CN202210965231A CN115252051A CN 115252051 A CN115252051 A CN 115252051A CN 202210965231 A CN202210965231 A CN 202210965231A CN 115252051 A CN115252051 A CN 115252051A
- Authority
- CN
- China
- Prior art keywords
- tube
- catheter
- pipe
- extension
- near end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 4
- 208000007536 Thrombosis Diseases 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002627 tracheal intubation Methods 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 208000005189 Embolism Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001627 cerebral artery Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003073 embolic effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007917 intracranial administration Methods 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M2025/0024—Expandable catheters or sheaths
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Pulmonology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Vascular Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a suction catheter, which comprises a main body tube, a stress buffer piece, a catheter seat and a telescopic tube body, wherein the main body tube, the stress buffer piece and the catheter seat are sequentially connected from a far end to a near end to form an integrated structure; the near end of the extension tube is connected with a push wire extending towards the catheter base, the near end of the push wire penetrates through the main tube and extends out of the catheter base, and the push wire can drive the extension tube to reciprocate along the axial direction of the main tube. The technical scheme of the invention achieves the effect of telescopic length of the suction catheter, and a doctor can make the suction catheter reach a thrombus suction position through one-time intubation, thereby reducing the time of interventional operation and reducing the pain of a patient.
Description
Technical Field
The invention relates to the technical field of nerve interventional medical instruments, in particular to a thrombus aspiration catheter.
Background
The catheter suction thrombus is a thrombus absorption operation commonly used in interventional operations, the medical means has positive effects of reducing far-end embolism of nerve vessels, improving intracranial acute ischemia, reducing cerebral artery injury and the like, and the cost is lower compared with mechanical suction operation, so the catheter suction thrombus is widely popularized, but the existing suction catheter still has a large number of technical defects.
Chinese patent publication No. CN110314272B discloses a thrombus aspiration catheter with a telescopic thrombus block fragmentation assembly, which comprises an aspiration tube, a multi-channel tube seat and a fragmentation assembly, wherein the aspiration tube adopts a traditional double-lumen tube structure, and an inner tube and an outer tube are arranged in a closed manner to achieve the function of aspirating thrombus. The inner tube and the outer tube of the suction tube of the thrombus catheter are fixedly connected, so that the inner tube cannot be separated from the outer tube and continues to extend to the far end, the thrombus suction catheter is required to have a sufficient length, the production cost of the thrombus suction catheter is high, the application scene in an interventional operation is limited because the length of the catheter is not variable, and the thrombus suction catheter of different types may need to be switched for many times in the operation.
Disclosure of Invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a suction catheter in which the suction tube can be freely extended distally, and which can be adapted to different situations in one fitting.
In order to achieve the purpose, the invention provides the following technical scheme: a suction catheter comprises a main body tube, a stress buffer member, a catheter seat and a telescopic tube body, wherein the main body tube, the stress buffer member and the catheter seat are sequentially connected from a far end to a near end to form an integrated structure; the near end of the extension tube is connected with a push wire extending towards the catheter seat, the near end of the push wire penetrates through the main tube and extends out of the catheter seat, the push wire can drive the extension tube to do reciprocating motion along the axial direction of the main tube, after the extension tube is delivered to a thrombus suction position, the guide tube is pulled away, and thrombus suction is performed by using the extension tube.
Furthermore, in consideration of improving the pushing effect of the guide tube on the extension tube, the guide tube is arranged to be a reducing tube body, the outer wall of the far end of the guide tube is tightly attached to the inner wall of the extension tube, the diameter of the tube body at the near end of the guide tube is reduced, a gap is reserved between the near end of the guide tube and the inner wall of the extension tube and extends out of the tube seat, and the part of the guide tube extending out of the tube seat is pushed to drive the extension tube to move towards the far end of the main tube along the main tube.
Further, the guide tube head is formed in a pen-tip shape or a tapered shape in view of reducing resistance to insertion of the guide tube into the inside of the extension tube.
Further, in view of the dual functionality of the catheter hub being in communication with both the extension tube and the aspiration device, the catheter hub of the present invention includes a first channel in communication with the extension tube for injection or aspiration of an injection fluid, such as contrast fluid, and a second channel in communication with the operative device, such as to control retraction and expansion of the embolic stent.
Further, the angle between the first and second channels of the present invention is 15 ° to 75 ° for comfort of the handheld catheter hub.
The invention has the beneficial effects that: (1) The extension pipe and the guide pipe are combined to form a telescopic pipe body, so that the length of the traditional double-cavity suction pipe is shortened, and the processing cost is greatly saved. (2) The extension tube has flexible length adjustment, can simultaneously meet different interventional operation scenes, and a doctor does not need to repeatedly insert a tube in the process of sucking thrombus, thereby reducing the interventional operation time and the operation pain of a patient.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an extension pipe according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a guide tube in accordance with an embodiment of the present invention.
In the figure: 1. the telescopic catheter comprises a main body tube, 2 stress buffer parts, 3 a catheter seat, 31 a first channel, 32 a second channel, 4 an extension tube, 41 a push wire, 5 a guide tube and 6 a telescopic catheter body.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
To more clearly describe the structure of the aspiration catheter, the terms "proximal" and "distal" are defined herein as terms customary in the interventional medical field. Specifically, in the field of interventional medicine, "distal" refers to the end that is distal from the operator during a surgical procedure, and "proximal" refers to the end that is proximal to the operator during the surgical procedure.
The preferred embodiment of the present invention, as shown in fig. 1, comprises a main tube 1, a stress buffering member 2, a catheter hub 3 and a telescopic tube body 6. The main body tube 1, the stress buffer member 2 and the catheter holder 3 are sequentially connected from the far end to the near end to form an integral structure, the telescopic tube body 6 comprises an extension tube 4 and a guide tube 5 sleeved in the extension tube 4, the far end of the guide tube 5 is tightly attached to the extension tube 4, the near end of the guide tube 5 penetrates through the main body tube 1 and extends out of the catheter holder 3, and the guide tube 5 can push the extension tube 4 to move towards the far end of the main body tube 1 along the main body tube 1; the near end of the telescopic tube body 6 is inserted into and extends out of the main body pipe from the tail end of the catheter holder 3, and the far end of the guide tube 5 is arranged outside the catheter holder 3. The near end of the extension tube 4 is connected with a push wire 41 extending towards the catheter holder 3, the near end of the push wire 41 penetrates through the main tube 1 and extends out of the catheter holder 3, and the push wire 41 can drive the extension tube 4 to reciprocate along the axial direction of the main tube 3. The guide tube 5 is set to be a reducing tube body, the head of the guide tube 5 is in a pen point shape, the resistance of the guide tube 5 inserted into the extension tube 4 can be reduced, the near-end tube diameter of the guide tube 5 is reduced, a gap is reserved between the near-end tube diameter of the guide tube 5 and the inner wall of the extension tube 4, the guide tube 5 extends out of the catheter seat 3, and the guide tube 5 is pushed to extend out of the catheter seat 3, so that the extension tube 4 can be assisted to move towards the far end of the main tube 1 along the main tube 1. The doctor extends out of the catheter seat 3 part by operating the push wire 41 or the guide tube 5, and then draws out the guide tube 5 to the outside of the body after the extension tube 4 reaches the thrombus suction position, and keeps the extension tube 4 for thrombus suction.
The structure principle and the using method of the suction catheter of the embodiment are as follows: 1) The lesion part is reached through micro-guide wire puncture, the distal end of the main body tube 1 is placed into the blood vessel and is close to the embolism of the blood vessel; 2) The doctor is outside the body, and the guide tube 5 is sleeved inside the extension tube 4 to be assembled into a telescopic tube 6; 3) Putting the telescopic pipe fitting 6 into the catheter base 3 from the tail end thereof in combination with the path of the micro guide wire, penetrating the main body pipe 1, and allowing the head end of the extension pipe 4 to enter the far end of the blood vessel; 4) The physician controls the length of extension tube 4 extending distally of the blood vessel by manipulating the portion of the push wire 41 and guide tube 5 extending out of the catheter hub 3. 5) When the distal end of the extension tube 4 reaches the thrombus aspiration site, the guide tube 5 is entirely withdrawn to the outside of the body. 6) In performing the injection, an injection fluid (e.g., contrast fluid) is injected from the first passageway 31 of the catheter hub 3 through the extension tube 4 and into the patient's blood vessel. When the thrombus is removed, the thrombus-taking bracket is controlled to be spread through the second channel 32. When aspiration is performed, aspiration is performed from the first passageway 31 of the catheter hub, drawing thrombus out of the blood vessel through the extension tube.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. An aspiration catheter, comprising: the stress buffering device comprises a main body pipe (1), a stress buffering member (2), a catheter seat (3) and a telescopic pipe body (6), wherein the main body pipe (1), the stress buffering member (2) and the catheter seat (3) are sequentially connected from a far end to a near end to form an integrated structure, the telescopic pipe body (6) comprises an extension pipe (4) and a guide pipe (5) sleeved inside the extension pipe (4), the far end of the guide pipe (5) is tightly attached to the extension pipe (4), the near end of the guide pipe (5) penetrates through the main body pipe (1) to extend out of the catheter seat (3), and the guide pipe (5) can push the extension pipe (4) to move towards the far end of the main body pipe (1) along the main body pipe (1); the near end of the extension tube (4) is connected with a pushing wire (41) extending towards the catheter seat (3), the near end of the pushing wire (41) penetrates through the main tube (1) and extends out of the catheter seat (3), and the pushing wire (41) is pushed and pulled to drive the extension tube (4) to reciprocate along the axial direction of the main tube (3).
2. A suction catheter as claimed in claim 1, wherein: the pipe diameter of the near end of the guide pipe (5) is reduced, and a gap is reserved between the near end of the guide pipe and the inner wall of the extension pipe (4).
3. A suction catheter as claimed in claim 1, wherein: the head of the guide tube (5) is in a pen point shape or a conical shape.
4. The suction catheter of claim 1, wherein: the catheter hub (3) comprises a first channel (31) and a second channel (32), the first channel (31) being in communication with the extension tube (4), the second channel (32) being in communication with an operating device.
5. The suction catheter of claim 4, wherein: the included angle between the first channel (31) and the second channel (32) is 15-75 degrees.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965231.0A CN115252051A (en) | 2022-08-12 | 2022-08-12 | Suction catheter |
| CN202322155519.4U CN221105941U (en) | 2022-08-12 | 2023-08-11 | Suction catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965231.0A CN115252051A (en) | 2022-08-12 | 2022-08-12 | Suction catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115252051A true CN115252051A (en) | 2022-11-01 |
Family
ID=83750917
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210965231.0A Pending CN115252051A (en) | 2022-08-12 | 2022-08-12 | Suction catheter |
| CN202322155519.4U Active CN221105941U (en) | 2022-08-12 | 2023-08-11 | Suction catheter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322155519.4U Active CN221105941U (en) | 2022-08-12 | 2023-08-11 | Suction catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115252051A (en) |
-
2022
- 2022-08-12 CN CN202210965231.0A patent/CN115252051A/en active Pending
-
2023
- 2023-08-11 CN CN202322155519.4U patent/CN221105941U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN221105941U (en) | 2024-06-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20221101 |
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| WD01 | Invention patent application deemed withdrawn after publication |