CN202909262U - Balloon proximal structure of PTCA (Percutaneous Transluminal Coronary Angioplasty) balloon catheter - Google Patents
Balloon proximal structure of PTCA (Percutaneous Transluminal Coronary Angioplasty) balloon catheter Download PDFInfo
- Publication number
- CN202909262U CN202909262U CN 201220352699 CN201220352699U CN202909262U CN 202909262 U CN202909262 U CN 202909262U CN 201220352699 CN201220352699 CN 201220352699 CN 201220352699 U CN201220352699 U CN 201220352699U CN 202909262 U CN202909262 U CN 202909262U
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- outer tube
- balloon
- ptca
- sacculus
- proximal structure
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Abstract
The utility model relates to a balloon proximal structure of a PTCA balloon catheter. The outside diameter of a tail end area (A) of an outer tube is reduced through the necking of the tail end area (A) at one end of the outer tube (1), and the tail end area (A) of the outer tube matches with a proximal end (B) of a balloon (2), and the proximal end (B) has a smaller diameter. The outer tube (1) and the balloon (2) are connected by soldering. Therefore, the connection area of the outer tube of the PTCA balloon catheter and the balloon has a smaller diameter and better flexibility. The balloon proximal structure of the PTCA balloon catheter improves the passing capability of the balloon and enables the balloon to pass through a zigzag and narrow lesion area, so that the success rate of apparatus implantation is improved.
Description
Technical field
This utility model relates to the balloon proximal structure that a kind of interventional therapy is used the sacculus dilating catheter of percutaneous transluminal coronary angioplasty.Its interventional therapy that belongs in the medical field is used the sacculus dilating catheter field.
Technical background
A kind of instrument that foley's tube is carried as intravascular stent plays an important role in the intravascular stent course of conveying.Under the guiding of guiding seal wire, intravascular stent is transported to lesion locations, until the whole process that sacculus expands and extracts out.In operation process, the performance of conduit directly affects the success or failure of operation.Because the blood vessel thickness of human body is uneven, also unusual bending, so need conduit to have very little external diameter, good compliance is conducive to the human vas by complexity, reaches lesion locations.The basic composition of conduit comprises: handle, hypotube, far-end outer tube, far-end inner tube, developing ring, sacculus, tip etc.These parts link together, and have consisted of whole conduit, and connecting portion is fine or not, also directly affect the performance of conduit.
In the past, in order to improve the pumpback time of contrast agent, the diameter of conduit outer tube is larger, but for the matching relationship that guarantees outer tube and sacculus requires the outer tube external diameter must be less than the internal diameter of balloon proximal, will cause like this balloon proximal also can to increase along with the external diameter of outer tube and increase, thereby increase the diameter of near-end welding region, cause the hardness of balloon proximal weld to become large, the compliance variation, foley's tube just is difficult to by complicated blood vessel.
Summary of the invention
This utility model purpose: a kind of balloon proximal structure of PTCA foley's tube is provided, is formed by outer tube 1, sacculus 2.Constriction by outer tube 1 terminal welding region A, the corresponding near-end B external diameter that has reduced sacculus 2, outer tube 1 and sacculus 2 join domains of the PTCA foley's tube that finally obtains have less diameter and better compliance, make foley's tube can pass through narrower and small lesion locations, minimizing reduces the restenosis rate of lesion locations to the damage of lesion locations blood vessel.
The outer tube 1 of this constriction can be macromolecular material, comprises: the mixture of Pebax, nylon, polyurethane, polyethylene, politef or above material.Sacculus 2 materials that are connected with outer tube 1 are Pebax or nylon.The welding manner of outer tube 1 and sacculus 2 can be for thermal weld or Laser Welding and with the combination of upper type.Need heat-shrink tube that the welding position is protected during welding.After outer tube 1 constriction, the internal diameter of outer tube 1 neck down portions A be not the neck down portions internal diameter 50%～100%, the wall thickness of neck down portions be not neck down portions 50%～100%.The length of outer tube 1 neck down portions A is 0.5mm～2.0mm, and the span access location length that is connected with sacculus 2 near-end B is 0.5mm～2.5.The mandrel that uses during constriction needs band coating, can be PTFE coating or other any coating, in order to avoid cause mandrel to the damage at constriction position.
The utlity model has following advantage:
1. the constriction of outer tube 1 regional A just can reduce the termination external diameter of outer tube by shirtsleeve operation, technique is simple.
2. by the constriction of outer tube 1 regional A, reduce the diameter of sacculus 2 near-end B, foley's tube is had pass narrow and small lesion locations ability, reduce the clinical operation risk.
Description of drawings:
Fig. 1 is the balloon proximal structural representation;
Fig. 2 is the outer tube schematic diagram of not constriction;
Fig. 3 is the outer tube schematic diagram of constriction.
The specific embodiment:
According to the internal diameter size of balloon proximal, the selection diameter is the mandrel between 0.5mm～0.8mm, and on mandrel, the pyrocondensation position puts heat-shrink tube outer tube sleeve, and the constriction position is protected.Need the position of constriction to place the caused by outlet of hot blast gun position outer tube of assembling mandrel and heat-shrink tube, the temperature of heat gun is between 170 ℃～200 ℃, with hand-held continuous rotation mandrel, outer tube is heated evenly, the pyrocondensation time is at 2S～5S, generally between 0.5mm～2mm, the outer tube external diameter after the constriction and the internal diameter of balloon proximal differ 0.13mm to the length of constriction.Outer tube after the constriction is inserted balloon proximal, and the length of insertion portion is suitable with balloon proximal length, by welding balloon proximal is connected with the outer tube neck down portions.
Claims (6)
1. the balloon proximal structure of a PTCA foley's tube, formed by outer tube (1), sacculus (2), it is characterized in that: the stub area (A) of outer tube (1) one side is carried out constriction, the near-end (B) that has less diameter with sacculus (2) cooperates, and by welding manner outer tube (1) is connected with sacculus (2).
2. the balloon proximal structure of a kind of PTCA foley's tube described in according to claim 1, it is characterized in that: the internal diameter of outer tube (1) necked-in region (A) is 50%～100% of neck down portions internal diameter not, the wall thickness of neck down portions be not neck down portions 50%～100%.
3. the balloon proximal structure of a kind of PTCA foley's tube described in according to claim 1, it is characterized in that: the length in the zone (A) after outer tube (1) constriction is 0.5mm～2.0mm.
4. the balloon proximal structure of a kind of PTCA foley's tube described in according to claim 1, it is characterized in that: zone (A) external diameter after outer tube (1) constriction is less than the internal diameter of sacculus (2) near-end.
5. the balloon proximal structure of a kind of PTCA foley's tube described in according to claim 1, it is characterized in that: outer tube (1) is 0.5mm～2.5mm with the length of the welding region of sacculus (2) near-end.
6. the balloon proximal structure of a kind of PTCA foley's tube described in according to claim 1 is characterized in that: outer tube (1) and the welding of sacculus (2) near-end can be adopted the mode of thermal weld, laser weld or thermal compression welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352699 CN202909262U (en) | 2012-07-20 | 2012-07-20 | Balloon proximal structure of PTCA (Percutaneous Transluminal Coronary Angioplasty) balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352699 CN202909262U (en) | 2012-07-20 | 2012-07-20 | Balloon proximal structure of PTCA (Percutaneous Transluminal Coronary Angioplasty) balloon catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202909262U true CN202909262U (en) | 2013-05-01 |
Family
ID=48157614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220352699 Expired - Lifetime CN202909262U (en) | 2012-07-20 | 2012-07-20 | Balloon proximal structure of PTCA (Percutaneous Transluminal Coronary Angioplasty) balloon catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202909262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001259A (en) * | 2014-06-11 | 2014-08-27 | 常州市久虹医疗器械有限公司 | Balloon and balloon catheter installing method |
| CN105435356A (en) * | 2014-09-28 | 2016-03-30 | 徐州亚太科技有限公司 | Bicuspid valve balloon dilatation catheter |
-
2012
- 2012-07-20 CN CN 201220352699 patent/CN202909262U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001259A (en) * | 2014-06-11 | 2014-08-27 | 常州市久虹医疗器械有限公司 | Balloon and balloon catheter installing method |
| CN105435356A (en) * | 2014-09-28 | 2016-03-30 | 徐州亚太科技有限公司 | Bicuspid valve balloon dilatation catheter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
|
| CX01 | Expiry of patent term |