CN202776398U - Novel loop apparatus for interventional treatment of congenital heart diseases - Google Patents
Novel loop apparatus for interventional treatment of congenital heart diseases Download PDFInfo
- Publication number
- CN202776398U CN202776398U CN 201220363429 CN201220363429U CN202776398U CN 202776398 U CN202776398 U CN 202776398U CN 201220363429 CN201220363429 CN 201220363429 CN 201220363429 U CN201220363429 U CN 201220363429U CN 202776398 U CN202776398 U CN 202776398U
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- Prior art keywords
- snare
- loop
- novel
- heart diseases
- congenital heart
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Abstract
The utility model discloses a novel loop apparatus for interventional treatment of congenital heart diseases. The novel loop apparatus comprises a loop, a nickel-titanium rod, a handle and a polymer shrinkable tube. The loop comprises a tail end which extends in a direction perpendicular to a plane of the loop. The tail end of the loop is fixedly connected with the bottom end of the nickel-titanium rod. The nickel-titanium rod is perpendicular to the plane of the loop. The loop is made of a nickel-titanium cord. The handle is fixed at the top end of the nickel-titanium rod. The polymer shrinkable tube is tightly sleeved to the bottom of the nickel-titanium rod and the tail end of the loop. The loop is made of the nickel-titanium cord formed by weaving a plurality of nickel-titanium wires. Compared with the loop apparatus made of the single nickel-titanium wire, the novel loop apparatus is higher in reliability. In addition, the tip of the loop is softer and less easily causes more unnecessary harms to human bodies, especially as of children.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of novel snare for interventional therapy in congenital heart diseases.
Background technology
Often can use snare in interventional therapy in congenital heart diseases, snare can by recovering needed shape behind the tiny tube chamber, be unlikely to too sharp-pointed and the injury bodily tissue simultaneously.
It is made that snare ring in the existing snare mostly is rustless steel, and in order to guarantee reproducibility, material is generally partially hard, and when sending conduit, the heart inner tissue of stabbing easily causes unnecessary injury.
There is now snare to adopt on the market and twines the snare ring that gold-plated tungsten wire is made outward by single nitinol alloy wire, because nitinol alloy wire is softer, be not easy the patient is caused unnecessary damage, but because single nitinol alloy wire deflection in the course of processing is larger, cause easily the situation of nitinol alloy wire fracture, cause snare to use.
Summary of the invention
The purpose of this utility model, a kind of novel snare for interventional therapy in congenital heart diseases is provided in order to address the above problem exactly, the material of this novel snare centre circle collar adopts the NiTi rope that is formed by the braiding of multiply nitinol alloy wire, has higher reliability.
The purpose of this utility model is achieved in that
A kind of novel snare for interventional therapy in congenital heart diseases of the present utility model comprises snare ring, NiTi bar, handle and macromolecule heat-shrink tube, wherein,
Described snare ring comprises the tail end that extends along perpendicular to the direction on this plane, snare ring place, the tail end of described snare ring is fixedly connected with the bottom of described NiTi bar, and described NiTi bar is perpendicular to the plane at described snare ring place, and described snare ring is made by the NiTi rope;
Described handle is fixed on the top of described NiTi bar;
Described macromolecule heat-shrink tube closely is sheathed on the tail end of the bottom of described NiTi bar and described snare ring.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described NiTi rope is formed by the braiding of multiply nitinol alloy wire.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described NiTi rope is formed by 7 to 19 bursts of nitinol alloy wire braidings.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described macromolecule heat-shrink tube is made by the macromolecular material that can directly contact blood of human body.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described macromolecule heat-shrink tube is made by polyethylene or politef.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described handle is made by the macromolecular material that can directly contact human body.
Above-mentioned a kind of novel snare for interventional therapy in congenital heart diseases, wherein, described handle is made by nylon or polyethylene.
This utility model compared with prior art has following beneficial effect:
1. this utility model centre circle collar adopts the NiTi rope that is formed by the braiding of multiply nitinol alloy wire to be made, has the ability by superfine ductule, can because of cause distortion by conduit, still can not guarantee after by tubule, to return to original shape simultaneously;
2. the snare of making compared to the sub-thread nitinol alloy wire the utlity model has higher reliability, and nitinol alloy wire has than the better biocompatibility of gold-plated tungsten wire, is difficult for human body generation anaphylaxis;
3. the snare of making compared to the sub-thread nitinol alloy wire, the tip of this utility model centre circle collar is more soft, is difficult for human body is caused how unnecessary injury, particularly child.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the side view of this utility model centre circle collar.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See also Fig. 1 and Fig. 2, there is shown the novel snare that this utility model is used for interventional therapy in congenital heart diseases, this novel snare comprises snare ring 1, NiTi bar 2, handle 3 and macromolecule heat-shrink tube 4.
Macromolecule heat-shrink tube 4 closely is sheathed on the tail end 11 of the bottom of NiTi bar 2 and snare ring 1, macromolecule heat-shrink tube 4 is made by the macromolecular material that can directly contact blood of human body, can select polyethylene or politef, its suit technique is: macromolecule heat-shrink tube 4 is enclosed within on the straight-bar that the tail end 11 of NiTi bar 2 and snare ring 1 forms, heat with hot-air blower, and change slow past post-tensioning, make the macromolecule heat-shrink tube 4 tight dociles that get on straight-bar.
This utility model centre circle collar 1 adopts the NiTi rope that is formed by the braiding of multiply nitinol alloy wire to be made, snare compared to the making of sub-thread nitinol alloy wire, has higher reliability, simultaneously, the tip 12 (seeing Fig. 2) of snare ring 1 is also more soft, be difficult for human body is caused how unnecessary injury, particularly child.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (7)
1. a novel snare that is used for interventional therapy in congenital heart diseases is characterized in that described novel snare comprises snare ring, NiTi bar, handle and macromolecule heat-shrink tube, wherein,
Described snare ring comprises the tail end that extends along perpendicular to the direction on this plane, snare ring place, the tail end of described snare ring is fixedly connected with the bottom of described NiTi bar, and described NiTi bar is perpendicular to the plane at described snare ring place, and described snare ring is made by the NiTi rope;
Described handle is fixed on the top of described NiTi bar;
Described macromolecule heat-shrink tube closely is sheathed on the tail end of the bottom of described NiTi bar and described snare ring.
2. a kind of novel snare for interventional therapy in congenital heart diseases as claimed in claim 1 is characterized in that, described NiTi rope is formed by the braiding of multiply nitinol alloy wire.
3. a kind of novel snare for interventional therapy in congenital heart diseases as claimed in claim 2 is characterized in that, described NiTi rope is formed by 7 to 19 bursts of nitinol alloy wire braidings.
4. such as each described a kind of novel snare for interventional therapy in congenital heart diseases of claims 1 to 3, it is characterized in that described macromolecule heat-shrink tube is made by the macromolecular material that can directly contact blood of human body.
5. a kind of novel snare for interventional therapy in congenital heart diseases as claimed in claim 4 is characterized in that described macromolecule heat-shrink tube is made by polyethylene or politef.
6. such as each described a kind of novel snare for interventional therapy in congenital heart diseases of claims 1 to 3, it is characterized in that described handle is made by the macromolecular material that can directly contact human body.
7. a kind of novel snare for interventional therapy in congenital heart diseases as claimed in claim 6 is characterized in that described handle is made by nylon or polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363429 CN202776398U (en) | 2012-07-25 | 2012-07-25 | Novel loop apparatus for interventional treatment of congenital heart diseases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363429 CN202776398U (en) | 2012-07-25 | 2012-07-25 | Novel loop apparatus for interventional treatment of congenital heart diseases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202776398U true CN202776398U (en) | 2013-03-13 |
Family
ID=47803760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363429 Expired - Lifetime CN202776398U (en) | 2012-07-25 | 2012-07-25 | Novel loop apparatus for interventional treatment of congenital heart diseases |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202776398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772231A (en) * | 2012-07-25 | 2012-11-14 | 上海形状记忆合金材料有限公司 | Novel snare for interventional therapy of congenital heart diseases |
-
2012
- 2012-07-25 CN CN 201220363429 patent/CN202776398U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772231A (en) * | 2012-07-25 | 2012-11-14 | 上海形状记忆合金材料有限公司 | Novel snare for interventional therapy of congenital heart diseases |
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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: 20130313 |
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| CX01 | Expiry of patent term |