CN221105941U - Suction catheter - Google Patents
Suction catheter Download PDFInfo
- Publication number
- CN221105941U CN221105941U CN202322155519.4U CN202322155519U CN221105941U CN 221105941 U CN221105941 U CN 221105941U CN 202322155519 U CN202322155519 U CN 202322155519U CN 221105941 U CN221105941 U CN 221105941U
- Authority
- CN
- China
- Prior art keywords
- pipe
- tube
- catheter
- extension
- seat
- 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.)
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Links
- 238000004891 communication Methods 0.000 claims description 4
- 208000007536 Thrombosis Diseases 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002627 tracheal intubation Methods 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 208000005189 Embolism Diseases 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010003162 Arterial injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 229940039231 contrast media Drugs 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000010586 diagram Methods 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
- 239000012530 fluid Substances 0.000 description 1
- 238000000338 in vitro Methods 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
- 210000005036 nerve Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model discloses a suction catheter, which comprises a main body pipe, a stress buffer piece, a catheter seat and a telescopic pipe body, wherein the main body pipe, the stress buffer piece and the catheter seat are sequentially connected from a distal end to a proximal end to form an integrated structure; the proximal end of the extension tube is connected with a pushing wire extending from the catheter seat, the proximal end of the pushing wire penetrates through the main body tube and extends out of the catheter seat, and the pushing wire is pushed and pulled to drive the extension tube to reciprocate along the axial direction of the main body tube. According to the technical scheme, the effect of telescopic length of the suction catheter is achieved, a doctor can enable the suction catheter to reach a thrombus suction position through one-time intubation, the intervention operation time is shortened, and the pain of a patient is reduced.
Description
Technical Field
The utility model relates to the technical field of neuro-interventional medical instruments, in particular to a thrombus aspiration catheter.
Background
The catheter is used for sucking thrombus, which is a thrombus absorbing operation commonly used in interventional operations, and the medical means has positive effects on reducing distal embolism of nerve blood vessels, improving intracranial acute ischemia, reducing cerebral arterial injury and the like, and has lower cost compared with mechanical sucking operation, so that the catheter is widely popularized, but the existing suction catheter still has a large number of technical defects.
The chinese patent of publication No. CN110314272B discloses a thrombus aspiration catheter with a telescopic thrombus block disruption assembly, which comprises an aspiration tube, a multi-channel tube seat and a disruption assembly, wherein the aspiration tube adopts a conventional double-lumen tube structure, and an inner tube and an outer tube are arranged in a closed manner to achieve the effect 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 to extend to the distal end, the thrombus-aspiration catheter is required to have a sufficient length, the thrombus-aspiration catheter is high in production cost, the catheter length is invariable, the application scene is limited in interventional operation, and the thrombus-aspiration catheters of different types can be required to be switched for multiple times in operation.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a suction catheter which can be freely extended to the far end and can be suitable for different scenes by one-time assembly.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the suction catheter 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 distal end to a proximal end to form an integrated structure, the telescopic tube body comprises an extension tube and a guide tube sleeved in the extension tube, the distal end of the guide tube is tightly attached to the extension tube, the proximal end of the guide tube penetrates through the main body tube to extend out of the catheter seat, and the guide tube can push the extension tube to move along the main body tube to the distal end of the main body tube; the proximal end of the extension tube is connected with a pushing wire extending towards the catheter seat, the proximal end of the pushing wire penetrates through the main tube and stretches out of the catheter seat, the pushing wire is pushed and pulled to drive the extension tube to do reciprocating motion along the axial direction of the main tube, and after the extension tube is sent to a thrombus suction position, the guide tube is pulled away, and thrombus suction is performed by the extension tube.
Further, considering that the pushing effect of the guide tube on the extension tube is improved, the guide tube is set to be a reducer tube body, the outer wall of the distal end of the guide tube is tightly attached to the inner wall of the extension tube, the diameter of the tube body of the proximal end of the guide tube is reduced, a gap is reserved between the tube body of the proximal end of the guide tube and the inner wall of the extension tube, the guide tube is pushed to extend out of the guide tube seat, and the guide tube extending out of the guide tube seat drives the extension tube to move along the main tube to the distal end of the main tube.
Further, the guide tube head portion is tapered in consideration of reducing resistance of the guide tube to insertion into the inside of the extension tube.
Further, in view of the dual function of the catheter hub for communicating with both the extension tube and the aspiration device, the catheter hub of the present utility model includes a first channel in communication with the extension tube for injection or aspiration of an injection fluid, such as contrast media, and a second channel in communication with an operating device, such as controlling retraction and deployment of the embolic stent.
Further, the first channel and the second channel of the present utility model have an included angle of 15 ° to 75 ° in consideration of the comfort of the hand-held catheter holder.
The beneficial effects of the utility model are as follows: (1) The extension tube and the guide tube are combined to form the telescopic tube body, so that the length of the traditional double-cavity suction tube is shortened, and the processing cost is greatly saved. (2) The length of the extension tube is flexible to adjust, so that different interventional operation scenes can be met simultaneously, a doctor does not need to repeatedly insert a tube in the process of sucking thrombus, the interventional operation time is shortened, and the operation pain of a patient is reduced.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic view of an extension pipe according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a guide tube according to an embodiment of the present utility model.
In the figure: 1. the device comprises a main body pipe, a stress buffer piece, a catheter seat, a first channel, a second channel, an extension pipe, a pushing wire, a guide pipe and a telescopic pipe body.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
For a clearer description of the structure of the aspiration catheter, the terms "proximal" and "distal" are defined herein as terms commonly used in the interventional medical arts. Specifically, in the field of interventional medicine, "distal" refers to the end that is distal to the operator during a surgical procedure, and "proximal" refers to the end that is proximal to the operator during a surgical procedure.
The preferred embodiment of the present utility model, as shown in fig. 1, comprises a main tube 1, a stress buffer 2, a catheter hub 3, and a telescoping tube body 6. The main body tube 1, the stress buffer part 2 and the catheter seat 3 are sequentially connected from the distal end to the proximal end to form an integrated structure, the telescopic tube body 6 comprises an extension tube 4 and a guide tube 5 sleeved in the extension tube 4, the distal end of the guide tube 5 is tightly attached to the extension tube 4, the proximal end of the guide tube 5 penetrates through the main body tube 1 to extend out of the catheter seat 3, and the guide tube 5 can push the extension tube 4 to move along the main body tube 1 to the distal end of the main body tube 1; the proximal end of the telescopic tube body 6 is inserted from the tail end of the catheter holder 3 and extends out of the main tube 1, and the distal end of the guiding tube 5 is arranged outside the catheter holder 3. The proximal end of the extension tube 4 is connected with a pushing wire 41 extending towards the catheter seat 3, the proximal end of the pushing wire 41 penetrates through the main body tube 1 to extend out of the catheter seat 3, and the pushing wire 41 can drive the extension tube 4 to reciprocate along the axial direction of the main body tube 1. The guide tube 5 is a reducer tube, the head of the guide tube 5 is conical, the resistance of the guide tube 5 inserted into the extension tube 4 can be reduced, the diameter of the tube at the proximal end of the guide tube 5 is reduced, a gap is reserved between the guide tube 5 and the inner wall of the extension tube 4, the guide tube extends out of the guide tube seat 3, and the extension tube 4 can be assisted to move towards the distal end of the main body tube 1 along the main body tube 1 by pushing the part of the guide tube 5 extending out of the guide tube seat 3. The doctor pulls the guide tube 5 out of the body to keep the extension tube 4 for thrombus aspiration by operating the push wire 41 or the portion of the guide tube 5 extending out of the catheter holder 3 to deliver the extension tube 4 to the thrombus aspiration site.
The structural 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 a blood vessel and approaches to a vascular embolism part; 2) The doctor is in vitro, the guiding tube 5 is sleeved inside the extension tube 4, and a telescopic tube fitting 6 is assembled; 3) A telescopic pipe fitting 6 is put in from the tail end of the catheter seat 3, passes through the main body pipe 1 and enters the far end of the blood vessel from the head end of the extension pipe 4 by combining with the path of the micro-guide wire; 4) The physician controls the length of extension tube 4 extending distally of the blood vessel by manipulating push wire 41 and the portion of guide tube 5 extending beyond 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 outside the body. 6) In performing the injection, an injection liquid (such as a contrast liquid) is injected from the first channel 31 of the catheter holder 3, so that the injection liquid (such as a contrast liquid) enters the blood vessel of the patient through the extension tube 4. During the thrombus taking, the thrombus taking bracket is controlled to be opened through the second channel 32. When aspiration is performed, aspiration is performed from the first channel 31 of the catheter hub 3, and thrombus is aspirated from the blood vessel through the extension tube.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A suction catheter, characterized by: the telescopic pipe comprises a main pipe (1), a stress buffer part (2), a pipe seat (3) and a telescopic pipe body (6), wherein the main pipe (1), the stress buffer part (2) and the pipe 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 pipe (1) to extend out of the pipe seat (3), and the guide pipe (5) can push the extension pipe (4) to move towards the far end of the main pipe (1) along the main pipe (1); the proximal end of the extension tube (4) is connected with a pushing wire (41) extending towards the catheter seat (3), the proximal end of the pushing wire (41) penetrates through the main body tube (1) to extend 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 body tube (1).
2. The aspiration catheter of claim 1, wherein: the pipe diameter of the proximal end of the guide pipe (5) is reduced, and a gap is reserved between the guide pipe and the inner wall of the extension pipe (4).
3. The aspiration catheter of claim 1, wherein: the head of the guide pipe (5) is conical.
4. The aspiration catheter of claim 1, wherein: the catheter holder (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 aspiration catheter of claim 4, wherein: the angle between the first channel (31) and the second channel (32) is 15 DEG to 75 deg.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965231.0A CN115252051A (en) | 2022-08-12 | 2022-08-12 | Suction catheter |
| CN2022109652310 | 2022-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221105941U true CN221105941U (en) | 2024-06-11 |
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 Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210965231.0A Pending CN115252051A (en) | 2022-08-12 | 2022-08-12 | 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 |
|---|---|
| CN115252051A (en) | 2022-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |