CN112386780A - Double-cavity micro catheter - Google Patents
Double-cavity micro catheter Download PDFInfo
- Publication number
- CN112386780A CN112386780A CN201910757462.0A CN201910757462A CN112386780A CN 112386780 A CN112386780 A CN 112386780A CN 201910757462 A CN201910757462 A CN 201910757462A CN 112386780 A CN112386780 A CN 112386780A
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- CN
- China
- Prior art keywords
- catheter
- pipe
- double
- cavity micro
- insertion 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.)
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Classifications
-
- 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
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- 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
- A61M2025/0037—Multi-lumen catheters with stationary elements characterized by lumina being arranged side-by-side
-
- 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
- A61M2025/0039—Multi-lumen catheters with stationary elements characterized by lumina being arranged coaxially
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09175—Guide wires having specific characteristics at the distal tip
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a double-cavity micro catheter which comprises a first catheter and a second catheter, wherein the first catheter is connected with the second catheter, the double-cavity micro catheter further comprises a third catheter, the outer diameter of the third catheter is smaller than the inner diameter of the second catheter, and the third catheter is slidably arranged in the second catheter. According to the invention, the third catheter is additionally arranged in the second catheter, when the guide wire head end in the first catheter slightly passes through the occlusion port of the main blood vessel, the double-cavity micro catheter cannot follow, namely the second catheter cannot follow forward any more, the third catheter is pushed, so that the third catheter is close to the occlusion port of the blood vessel, the support points of the guide wire head end in the third catheter are increased, the attack points are concentrated, and the success rate of the operation is improved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a double-cavity micro catheter.
Background
The coronary artery chronic total occlusion lesion refers to coronary artery occlusion lesion with grade 0 of forward myocardial infarction thrombolytic Therapy (TIMI) blood flow and occlusion time more than or equal to 3 months, and if an ipsilateral side branch or an ipsilateral side branch blood vessel exists, the coronary artery chronic total occlusion lesion is regarded as the total occlusion lesion although the TIMI blood flow of an occluded distal blood vessel is more than grade 0.
Chronic Total Occlusion (CTO) of the coronary arteries is called the "last fort" in the field of coronary intervention because of the low success rate and high incidence of complications following Percutaneous Coronary Intervention (PCI). Research shows that up to 20% of patients with coronary heart disease are simultaneously combined with at least one CTO lesion. Successful revascularization of CTO lesions can effectively improve myocardial ischemia and relieve angina pectoris, improve left ventricular function, reduce the need for coronary artery bypass grafting, and improve clinical prognosis.
The microcatheter is a necessary instrument for treating CTO lesions, not only provides strong support, but also facilitates the shaping and exchange of guide wires and ensures the achievement of proximal end. When the double-cavity micro catheter is used for treating the blood vessel with the completely-blocked branch opening (such as the completely-blocked branch opening, the completely-blocked corner branch opening, the completely-blocked OM opening and the like), when the guide wire head end in the first catheter slightly passes through the blocked opening of the main blood vessel, because the double-cavity micro catheter cannot follow up, namely the second catheter cannot follow up forward, the support points of the guide wire head end in the second catheter are reduced, attack points are scattered, and the possibility of rebounding out of the blood vessel is easy to occur.
Disclosure of Invention
The invention aims to overcome the defects that a second microcatheter guide wire head end supporting point in the prior art is weak, attack points are scattered, and the possibility of rebounding out of a blood vessel is easy to occur, and provides a double-cavity microcatheter.
The invention solves the technical problems through the following technical scheme:
the utility model provides a little pipe of two-chamber, its includes first pipe and second pipe, first pipe with the second pipe is connected, its characterized in that, little pipe of two-chamber still includes the third pipe, third pipe external diameter is less than second pipe internal diameter, third pipe slidable locates in the second pipe.
In this scheme, adopt above-mentioned structure, add the third pipe on the basis of original two-chamber pipe a little, when the second pipe can't follow up, can impel the third pipe, make the third pipe insert the end and press close to the vascular occlusion mouth more.
Preferably, the first guide tube and the second guide tube are connected in parallel, the insertion end of the first guide tube exceeds the insertion end of the second guide tube, the insertion end of the first guide tube is a plane, and the other end of the first guide tube is an inclined plane.
In this scheme, adopt above-mentioned structure, first pipe inserts the end and is the plane, avoids causing the injury to the vascular wall.
Preferably, the insertion end of the second conduit is an inclined surface, and two sides of the other end of the second conduit are provided with first ends.
In this scheme, adopt above-mentioned structure, the second pipe inserts the end and is the inclined plane, makes the pipe more smooth when impelling in the blood vessel to the blood vessel is protected, and the setting of first tip makes the operation go on, and it is more convenient to impel first pipe and second pipe.
Preferably, the third guide pipe is inserted into the second guide pipe, the insertion end of the third guide pipe is an inclined surface, and second ends are arranged on two sides of the other end of the third guide pipe.
In this scheme, adopt above-mentioned structure, the third pipe inserts the end and is the inclined plane, makes the third pipe have the angle of preferred to perform the operation when being close to vascular occlusion mouth, and simultaneously, the setting of second end is convenient for impel the third pipe, improves operation efficiency, and is more convenient.
Preferably, the double-cavity micro-catheter further comprises a third end, the third end is connected with a guide wire, the third end can be slidably inserted into the third catheter, and the guide wire can be slidably inserted into the third catheter.
In this scheme, adopt above-mentioned structure, insert the seal wire and locate in the third pipe, make seal wire head end holding power reinforcing, make the seal wire attack point more concentrated to improve the operation success rate.
Preferably, the double-cavity micro catheter further comprises a protection tube, and the protection tube is sleeved outside the first catheter and the second catheter.
In this scheme, adopt above-mentioned structure, establish the protection tube at first pipe and second pipe outside cover, avoid the little pipe of two-chamber to cause the unnecessary injury to the vascular wall.
Preferably, the first conduit is made of polytetrafluoroethylene, the second conduit comprises a steel wire mesh layer and a polytetrafluoroethylene layer which are connected from outside to inside, and the third conduit is made of polytetrafluoroethylene.
In this scheme, adopt above-mentioned material, reduce the material of the little pipe of two-chamber and cause the injury to the human body.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
according to the invention, the third catheter is additionally arranged in the second catheter, when the guide wire head end in the first catheter slightly passes through the occlusion port of the main blood vessel, the double-cavity micro catheter cannot follow, namely the second catheter cannot follow forward any more, the third catheter is pushed, so that the third catheter is close to the occlusion port of the blood vessel, the support points of the guide wire head end in the third catheter are increased, the attack points are concentrated, and the success rate of the operation is improved.
Drawings
FIG. 1 is a schematic structural view of a double lumen microcatheter in accordance with a preferred embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a double lumen microcatheter in accordance with a preferred embodiment of the invention.
Description of reference numerals:
1 first guide tube
2 second conduit
21 first end
3 third conduit
31 second end
4 third terminal
5 protective tube
6 polytetrafluoroethylene layer
7 steel wire mesh layer
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 and 2, the present invention discloses a double-lumen microcatheter, which comprises a first catheter 1 and a second catheter 2, wherein the first catheter 1 is connected with the second catheter 2, the double-lumen microcatheter further comprises a third catheter 3, the outer diameter of the third catheter 3 is smaller than the inner diameter of the second catheter 2, and the third catheter 3 is slidably arranged in the second catheter 2.
The third catheter 3 is additionally arranged on the basis of the original double-cavity micro catheter, when the second catheter 2 cannot follow up, the third catheter 3 can be pushed, the third catheter 3 is pushed to the vascular occlusion port, and the insertion end of the third catheter 3 is enabled to be closer to the vascular occlusion port.
The first guide pipe 1 and the second guide pipe 2 are connected in parallel, the inserting end of the first guide pipe 1 exceeds the inserting end of the second guide pipe 2, the inserting end of the first guide pipe 1 is a plane, and the other end of the first guide pipe 1 is an inclined plane. The insertion end of the first catheter 1 is a plane, so that the injury to the vessel wall is avoided.
The inserting end of the second conduit 2 is an inclined plane, and both sides of the other end of the second conduit 2 are provided with first ends 21. The insertion end of the second catheter 2 is an inclined surface, so that the catheter is more smoothly pushed in a blood vessel, the blood vessel is protected, and the first end head 21 is arranged, so that the first catheter 1 and the second catheter 2 are more conveniently pushed in the operation.
The third conduit 3 is inserted into the second conduit 2, the insertion end of the third conduit 3 is an inclined plane, and the two sides of the other end of the third conduit 3 are provided with second end heads 31. The insertion end of the third catheter 3 is an inclined surface, so that the third catheter 3 has a better angle for performing an operation when being close to a vascular occlusion port, and meanwhile, the second end 31 is arranged, so that the third catheter 3 is convenient to push, the operation efficiency is improved, and the operation is more convenient.
The double-cavity micro catheter also comprises a third end 4, the third end 4 is connected with a guide wire, the third end 4 can be slidably inserted into the third catheter 3, and the guide wire can be slidably inserted into the third catheter 3. The guide wire is inserted into the third catheter 3, so that the supporting force of the head end of the guide wire is enhanced, the attack points of the guide wire are more concentrated, and the success rate of the operation is improved.
The double-cavity micro catheter further comprises a protection tube 5, and the protection tube 5 is sleeved on the outer sides of the first catheter 1 and the second catheter 2. Protective tubes 5 are sleeved on the outer sides of the first catheter 1 and the second catheter 2, so that unnecessary injury to the vascular wall caused by the double-cavity micro catheter is avoided.
The material of first pipe 1 is polytetrafluoroethylene, and second pipe 2 includes from outer to interior and interconnect's wire mesh layer 7 and polytetrafluoroethylene layer 6, and the material of third pipe 3 is polytetrafluoroethylene. By adopting the material, the harm of the material of the double-cavity micro catheter to a human body is reduced.
When an operation is performed, a guide wire is arranged in a first catheter 1, a double-cavity micro catheter is controlled by a first end head 21 to move to the position close to a vascular occlusion port along with the first catheter 1, so that a second catheter 2 is close to the vascular occlusion port, when an insertion opening of the second catheter 2 is far away from the vascular occlusion port, a third catheter 3 is controlled and pushed by a second end head 31, the insertion opening of the third catheter 3 is close to the vascular occlusion port, and then a third end head 4 is pushed to control the guide wire connected with the third end head 4 to attack the vascular occlusion port.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. The utility model provides a little pipe of two-chamber, its includes first pipe and second pipe, first pipe with the second pipe is connected, its characterized in that, little pipe of two-chamber still includes the third pipe, third pipe external diameter is less than second pipe internal diameter, third pipe slidable locates in the second pipe.
2. The double-lumen microcatheter of claim 1, wherein said first catheter and said second catheter are connected in parallel, said insertion end of said first catheter exceeds said insertion end of said second catheter, said insertion end of said first catheter is a flat surface, and said other end of said first catheter is an inclined surface.
3. The double-lumen microcatheter of claim 1, wherein the insertion end of the second catheter is formed as an inclined surface, and the other end of the second catheter is provided with a first tip at both sides thereof.
4. The double-lumen microcatheter of claim 1, wherein the third catheter is inserted into the second catheter, the insertion end of the third catheter is an inclined surface, and second tips are disposed on two sides of the other end of the third catheter.
5. The double-lumen microcatheter of claim 1, further comprising a third tip, wherein said third tip is connected to a guidewire, wherein said third tip is slidably inserted into said third catheter, and wherein said guidewire is slidably inserted into said third catheter.
6. The double-lumen microcatheter of claim 1, further comprising a protective tube, wherein the protective tube is sleeved outside the first catheter and the second catheter.
7. The double-lumen microcatheter of any of claims 1-6, wherein the material of the first catheter is polytetrafluoroethylene, the second catheter comprises a steel mesh layer and a polytetrafluoroethylene layer from outside to inside and connected with each other, and the third catheter is polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910757462.0A CN112386780A (en) | 2019-08-16 | 2019-08-16 | Double-cavity micro catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910757462.0A CN112386780A (en) | 2019-08-16 | 2019-08-16 | Double-cavity micro catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112386780A true CN112386780A (en) | 2021-02-23 |
Family
ID=74601973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910757462.0A Pending CN112386780A (en) | 2019-08-16 | 2019-08-16 | Double-cavity micro catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112386780A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010003161A1 (en) * | 1996-11-04 | 2001-06-07 | Vardi Gil M. | Catheter with side sheath |
| US20030144657A1 (en) * | 2002-01-28 | 2003-07-31 | Cardiac Pacemakers, Inc. | Inner and outer telescoping catheter delivery system |
| US20040243095A1 (en) * | 2003-05-27 | 2004-12-02 | Shekhar Nimkar | Methods and apparatus for inserting multi-lumen spit-tip catheters into a blood vessel |
| CN1630542A (en) * | 2002-02-27 | 2005-06-22 | 株式会社钟化 | Balloon catheter for tentative vaso-occlusion |
| TW200706199A (en) * | 2005-05-26 | 2007-02-16 | Kaneka Corp | Catheter |
| CN201603259U (en) * | 2010-02-01 | 2010-10-13 | 韩雅玲 | Catheter for thrombus aspiration in blood vessel |
| CN204207772U (en) * | 2014-08-27 | 2015-03-18 | 马永红 | A kind of utensil for the treatment of arterial occlusion pathological changes |
| CN204306848U (en) * | 2014-11-19 | 2015-05-06 | 张东伟 | A kind of auxiliary reverse seal wire enters the device of forward guiding catheter |
| CN105102054A (en) * | 2013-01-30 | 2015-11-25 | 血管通路股份有限公司 | Systems and methods for venipuncture and catheter placement |
| JP2018047063A (en) * | 2016-09-21 | 2018-03-29 | テルモ株式会社 | Connection port and medical device |
| CN208677716U (en) * | 2018-04-09 | 2019-04-02 | 中国医学科学院北京协和医院 | Tube adapter for drum membrane |
| CN208973936U (en) * | 2017-09-06 | 2019-06-14 | 何冀芳 | Work foley's tube or microtubular reinforcing support system and intervention conducting system |
-
2019
- 2019-08-16 CN CN201910757462.0A patent/CN112386780A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010003161A1 (en) * | 1996-11-04 | 2001-06-07 | Vardi Gil M. | Catheter with side sheath |
| US20030144657A1 (en) * | 2002-01-28 | 2003-07-31 | Cardiac Pacemakers, Inc. | Inner and outer telescoping catheter delivery system |
| CN1630542A (en) * | 2002-02-27 | 2005-06-22 | 株式会社钟化 | Balloon catheter for tentative vaso-occlusion |
| US20040243095A1 (en) * | 2003-05-27 | 2004-12-02 | Shekhar Nimkar | Methods and apparatus for inserting multi-lumen spit-tip catheters into a blood vessel |
| TW200706199A (en) * | 2005-05-26 | 2007-02-16 | Kaneka Corp | Catheter |
| CN201603259U (en) * | 2010-02-01 | 2010-10-13 | 韩雅玲 | Catheter for thrombus aspiration in blood vessel |
| CN105102054A (en) * | 2013-01-30 | 2015-11-25 | 血管通路股份有限公司 | Systems and methods for venipuncture and catheter placement |
| CN204207772U (en) * | 2014-08-27 | 2015-03-18 | 马永红 | A kind of utensil for the treatment of arterial occlusion pathological changes |
| CN204306848U (en) * | 2014-11-19 | 2015-05-06 | 张东伟 | A kind of auxiliary reverse seal wire enters the device of forward guiding catheter |
| JP2018047063A (en) * | 2016-09-21 | 2018-03-29 | テルモ株式会社 | Connection port and medical device |
| CN208973936U (en) * | 2017-09-06 | 2019-06-14 | 何冀芳 | Work foley's tube or microtubular reinforcing support system and intervention conducting system |
| CN208677716U (en) * | 2018-04-09 | 2019-04-02 | 中国医学科学院北京协和医院 | Tube adapter for drum membrane |
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