CN114432577B - Interventional medical catheter component welding method and medical catheter - Google Patents
Interventional medical catheter component welding method and medical catheter Download PDFInfo
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- CN114432577B CN114432577B CN202210078794.8A CN202210078794A CN114432577B CN 114432577 B CN114432577 B CN 114432577B CN 202210078794 A CN202210078794 A CN 202210078794A CN 114432577 B CN114432577 B CN 114432577B
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- welding
- medical catheter
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- 238000003466 welding Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 37
- -1 polyethylene Polymers 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000003902 lesion Effects 0.000 abstract description 6
- 230000002308 calcification Effects 0.000 abstract description 3
- 210000003128 head Anatomy 0.000 description 9
- 238000013146 percutaneous coronary intervention Methods 0.000 description 5
- 210000005077 saccule Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 208000004476 Acute Coronary Syndrome Diseases 0.000 description 1
- 206010002383 Angina Pectoris Diseases 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 230000002107 myocardial effect Effects 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 208000031225 myocardial ischemia Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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
- A61M25/10—Balloon catheters
- A61M25/1027—Making of balloon catheters
- A61M25/1036—Making parts for balloon catheter systems, e.g. shafts or distal ends
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Child & Adolescent Psychology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (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 discloses a welding method of an interventional medical catheter component and a medical catheter, wherein the catheter component comprises a catheter body and a guiding end positioned at the distal end of the catheter body, and the welding method comprises the following steps: providing at least two sleeved tip tubes; sleeving the first layer of tip end pipe at the guide end of the pipe body, and fixing the first layer of tip end pipe on the pipe body in a welding mode; sleeving the second layer of tip tube on the first layer of tip tube, and welding the second layer of tip tube on the first layer of tip tube; similarly, a plurality of pointed pipes are nested and welded on the pipe body to form pointed ends at the guide ends of the pipe body; by adopting the welding method, the guide end of the tube body is firmer and more durable, and can more easily pass through severe calcification lesions, thereby improving the success rate of interventional operation.
Description
Technical Field
The invention relates to the technical field of medical catheters, in particular to a welding method of an interventional medical catheter component and a medical catheter.
Background
The percutaneous coronary intervention treatment (Percutaneous coronary intervention, PCI) can rapidly open the infarcted coronary artery, improve the myocardial blood supply, realize the ischemia myocardial reperfusion, and effectively treat angina pectoris, myocardial infarction and acute coronary syndrome. As the most commonly used vascular reconstruction mode, PCI has the advantages of high open rate, ideal effect and the like, and patients who select PCI treatment gradually increase with the development of interventional therapy technology. However, the calcified coronary lesions often penetrate through various complex lesions, which can affect the performance of the balloon dilation catheter, for example, since most of balloon and tube bodies in the existing balloon catheters are fixed by welding, no protective measures are arranged outside the welding points, when the calcified lesions are encountered, the distal ends of the balloons and the tube bodies are easily separated, so that the balloon leaks, and the difficulty of coronary intervention treatment is increased.
Disclosure of Invention
The invention aims to solve the technical problems and provide an interventional medical catheter component welding method and a medical catheter capable of effectively increasing the sealing firmness of the distal end of a balloon so as to reduce the leakage risk.
In order to achieve the above object, the present invention discloses a welding method of an interventional medical catheter component, the catheter component comprises a catheter body and a guiding end positioned at the distal end of the catheter body, the welding method comprises the following steps:
providing at least two sleeved tip tubes;
Sleeving a first layer of tip end pipe at the guide end of the pipe body, and fixing the first layer of tip end pipe on the pipe body in a welding mode;
sleeving a second layer of tip tube on the first layer of tip tube, and welding the second layer of tip tube on the first layer of tip tube;
Similarly, tip tubes are nest welded to the tube body to form a tip head at the leading end of the tube body.
Preferably, the distal end of the tip is treated with a laser so that the first layer tip tube and the second layer tip tube are fused together.
Preferably, when the first layer tip tube and the second layer tip tube are fused by laser, the distal end face of the tip head is a smooth cambered surface.
Preferably, the outer diameter of the first layer tip tube is comparable to the inner diameter of the second layer tip tube.
Preferably, the tip tube is made of any one of polyether block polyamide, polyethylene, polytetrafluoroethylene, polypropylene, polyvinyl chloride and polyurethane.
Preferably, the first layer tip tube and the second layer tip tube are welded using laser or ultrasonic waves.
Preferably, when a laser welding process is adopted, the laser intensity is 200-1000 mw, the light spot size is 0.5-10 mm, and the rotation speed of the pipe body is 500-5000rpm.
Preferably, when an ultrasonic welding process is adopted, the ultrasonic wave has a frequency range of 15 kHz-40 kHz, an air inlet pressure of 0.2-0.7 mPa, a welding time of 0.2-2.0S and an amplitude of 5-256 nm.
Preferably, a balloon is arranged on the outer side of the tube body, and the balloon and the guiding end of the tube body are welded together before the first layer of tip tube is welded.
The invention also discloses a medical catheter which is any one of a micro catheter, a balloon catheter, a nicked balloon catheter, a cutting balloon catheter and a catheter sheath, and comprises an interventional medical catheter part manufactured according to the interventional medical catheter part welding method.
Compared with the prior art, the welding method of the interventional medical catheter component is used for reinforcing the guiding end positioned at the distal end of the catheter, at least two layers of tip pipes are sleeved at the guiding end of the catheter body during operation, and the tip pipes are welded with the catheter body, so that a tip head is formed at the guiding end of the catheter body, the guiding end of the catheter body is firmer and more durable, and can more easily pass through severe calcification lesions, and the success rate of interventional operation is improved.
Drawings
FIG. 1 is a schematic diagram showing an intermediate state of welding a catheter according to an embodiment of the present invention.
Fig. 2 is a schematic view of the catheter welding completion state of fig. 1.
Fig. 3 is a schematic view illustrating an initial state of a welding process of a balloon catheter according to an embodiment of the present invention.
Fig. 4 is a schematic diagram showing an intermediate state of the balloon catheter welding process in the embodiment of the present invention.
Fig. 5 is a schematic diagram of a final state of the balloon catheter welding process according to an embodiment of the present invention.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
The present embodiment discloses a welding method for an interventional medical catheter component, as shown in fig. 1, the catheter component includes a catheter body 10 and a guiding end 100 located at a distal end of the catheter body, and the welding method in the present embodiment includes the following steps:
providing at least two sleeved tip tubes;
First, as shown in fig. 1, a first layer of tip tube 20 is sleeved on a guiding end 100 of a tube body 10, and the first layer of tip tube 20 is fixed on the tube body 10 by adopting a welding mode;
Then, as shown in fig. 2, a second-layer tip tube 21 is sleeved on the first-layer tip tube 20, and the second-layer tip tube 21 is welded on the first-layer tip tube 20;
similarly, a plurality of tip tubes are nest welded to the tube body 10 to form a tip head M at the leading end 100 of the tube body 10.
In particular, the catheter component in the above embodiments may be used for any catheter used in interventional procedures such as microcatheters, balloon catheters, scored balloon catheters, cutting balloon catheters, catheter sheaths, and the like.
Taking a balloon catheter as an example, as shown in fig. 3 to 5, a balloon 30 is disposed on the outer side of the tube body 10, and when the balloon catheter is processed by the above-mentioned welding method, before welding the first layer tip 20 tube, the balloon 30 and the guide end 100 of the tube body 10 are welded together, then the first layer tip tube 20 is sleeved and welded at the connection between the balloon 30 and the guide end 100, and then the second layer tip tube 21 is welded. Thus, by forming the tip head M at the leading end 100 of the balloon catheter, not only the leading end 100 of the tube body 10 can be made more firm and durable, but also the risk of leakage at the junction of the balloon 30 and the tube body 10 can be effectively reduced.
Further, the distal end of the tip head M is processed by laser, so that the first layer tip tube 20 and the second layer tip tube 21 are fused together, thereby further improving the firmness of the tip head M and reducing the outer diameter of the tip head M. Preferably, when the first-layer tip tube 20 and the second-layer tip tube 21 are fused by laser, the distal end face of the tip head M is made to be a smooth arc surface, so that the catheter can run in the blood vessel more smoothly.
Furthermore, when the tip tube is selected, the outer diameter of the first-layer tip tube 20 is equal to the inner diameter of the second-layer tip tube 21, so that the first-layer tip tube 20 and the second-layer tip tube 21 are connected more tightly, and fusion welding is facilitated.
For the tip pipes (the first-layer tip pipe 20 and the second-layer tip pipe 21) used in the above-described embodiments, any one of polyether block polyamide, polyethylene, polytetrafluoroethylene, polypropylene, polyvinyl chloride, polyurethane is used.
Further, the first-layer tip tube 20 and the second-layer tip tube 21 may be subjected to a welding process using laser or ultrasonic waves. When the laser welding process is adopted, the laser intensity is 200mw-1000mw, the light spot size is 0.5mm-10mm, and the rotation speed of the pipe body 10 is 500 rpm-5000 rpm. When the ultrasonic welding process is adopted, the frequency range of ultrasonic waves is 15 kHz-40 kHz, the air inlet pressure is 0.2-0.7 mPa, the welding time is 0.2-2.0S, and the amplitude is 5-256 nm.
The invention also discloses a balloon catheter, which comprises the interventional medical catheter component manufactured by the interventional medical catheter component welding method according to any embodiment, and further comprises a balloon welded on the catheter body 10.
The invention also discloses a nicking saccule catheter, which comprises the interventional medical catheter component manufactured by the welding method of the interventional medical catheter component according to any embodiment, and further comprises a saccule welded on the catheter body 10 and nicking elements connected on the catheter body 10, wherein the nicking elements are arranged along the axial direction of the saccule, and the nicking elements are pushed by the expansion of the saccule to nick blood vessel plaques.
The invention also discloses a cutting balloon catheter, which comprises the interventional medical catheter component manufactured by the welding method of the interventional medical catheter component according to any embodiment, and further comprises a balloon welded on the catheter body 10 and cutting elements connected on the catheter body 10, wherein the cutting elements are arranged along the radial direction of the balloon, and the expansion of the balloon pushes the cutting elements to cut vascular plaques.
In summary, the catheter formed by welding through the method is sleeved and welded with at least two layers of tip pipes at the guide end 100 of the catheter, so that the tip end M is formed at the guide end 100, the guide end 100 of the catheter is more firm, firm and durable, and can more easily pass through severe calcification lesions, thereby improving the success rate of interventional operations.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (8)
1. A method of welding an interventional medical catheter component, the catheter component comprising a catheter body and a guide end at a distal end of the catheter body, the method comprising the steps of:
providing at least two sleeved tip tubes;
Sleeving a first layer of tip end pipe at the guide end of the pipe body, and fixing the first layer of tip end pipe on the pipe body in a welding mode;
sleeving a second layer of tip tube on the first layer of tip tube, and welding the second layer of tip tube on the first layer of tip tube;
Similarly, a plurality of tip pipes are nested and welded on the pipe body so as to form tip heads at the guide ends of the pipe body; processing the distal end of the tip head with a laser so that the first layer tip tube and the second layer tip tube are fused together;
The outer side of the tube body is provided with a balloon, and the balloon and the guide end of the tube body are welded together before the first layer of tip tube is welded.
2. The method of welding an interventional medical catheter component according to claim 1, wherein the distal end face of the tip is made smooth and cambered when the first layer tip tube and the second layer tip tube are fused by laser.
3. The method of welding an interventional medical catheter component of claim 1, wherein an outer diameter of the first layer tip tube is comparable to an inner diameter of the second layer tip tube.
4. The method for welding an interventional medical catheter component according to claim 1, wherein the tip tube is made of any one of polyether block polyamide, polyethylene, polytetrafluoroethylene, polypropylene, polyvinyl chloride and polyurethane.
5. The method of welding an interventional medical catheter component according to claim 1, wherein the first layer tip tube and the second layer tip tube are welded using laser or ultrasonic waves.
6. The method of welding an interventional medical catheter component according to claim 5, wherein when a laser welding process is used, the laser intensity is 200mw-1000mw, the spot size is 0.5mm-10mm, and the rotational speed of the tube is 500-5000rpm.
7. The method according to claim 5, wherein when an ultrasonic welding process is used, the ultrasonic wave has a frequency range of 15kHz to 40kHz, an air intake pressure of 0.2mPa to 0.7mPa, a welding time of 0.2S to 2.0S, and an amplitude of 5 to 256nm.
8. A medical catheter which is any one of a microcatheter, a balloon catheter, and a catheter sheath, characterized in that it comprises an interventional medical catheter component manufactured by the interventional medical catheter component welding method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078794.8A CN114432577B (en) | 2022-01-24 | 2022-01-24 | Interventional medical catheter component welding method and medical catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078794.8A CN114432577B (en) | 2022-01-24 | 2022-01-24 | Interventional medical catheter component welding method and medical catheter |
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| Publication Number | Publication Date |
|---|---|
| CN114432577A CN114432577A (en) | 2022-05-06 |
| CN114432577B true CN114432577B (en) | 2024-06-18 |
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| CN202210078794.8A Active CN114432577B (en) | 2022-01-24 | 2022-01-24 | Interventional medical catheter component welding method and medical catheter |
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| CN116370817B (en) * | 2023-03-22 | 2024-01-09 | 上海玮启医疗器械有限公司 | Medical grade pump blood conduit assembly and suction channel thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423453A (en) * | 2019-02-25 | 2021-09-21 | 美敦力瓦斯科尔勒公司 | Medical balloon assembly and method of manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103055411B (en) * | 2013-01-25 | 2014-03-12 | 业聚医疗器械(深圳)有限公司 | Balloon catheter and manufacturing method thereof |
| WO2018172985A1 (en) * | 2017-03-24 | 2018-09-27 | Poly Medicure Limited | A fluid administration medical apparatus and intravenous catheter assembly |
| CN108387982B (en) * | 2018-02-23 | 2019-12-03 | 烽火通信科技股份有限公司 | A kind of Full-dry optical cable and its manufacturing method |
| CN209026333U (en) * | 2018-07-20 | 2019-06-25 | 泉州市盛国贸易有限公司 | A kind of anticorrosion petroleum pipeline |
| CN214912428U (en) * | 2020-09-17 | 2021-11-30 | 北京市凯泽斯商贸有限公司 | Pulmonary artery balloon dilatation catheter |
| CN113633447B (en) * | 2021-05-26 | 2024-06-28 | 上海微创心脉医疗科技(集团)股份有限公司 | Branching sheath and delivery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113423453A (en) * | 2019-02-25 | 2021-09-21 | 美敦力瓦斯科尔勒公司 | Medical balloon assembly and method of manufacturing the same |
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| CN114432577A (en) | 2022-05-06 |
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