发明名称 |
NEEDLE ASSEMBLIES AND METHODS OF MANUFACTURE |
摘要 |
A needle assembly of a metal shaft (10, 10') and an outer plastics sleeve (12) is made by extruding the sleeve onto the outside of the shaft. The sleeve contains gas bubbles (13), preferably with a size in the range 5μ to 10μ, to increase the ultrasound visibility of the assembly. A sharp, penetrating tip (18) may be formed on the shaft either before or after the sleeve is extruded on the shaft. The metal shaft (10) may be supplied to the extruder 1 to 5 in a continuous length and cut to the size of the needle assemblies after extrusion of the sleeve (12). Alternatively, pre-cut lengths of metal shafts (10') could be supplied to the extruder 1' to 5', the sleeve being cut between the shafts after extrusion. |
申请公布号 |
WO2015008014(A1) |
申请公布日期 |
2015.01.22 |
申请号 |
WO2014GB00237 |
申请日期 |
2014.06.17 |
申请人 |
SMITHS MEDICAL INTERNATIONAL LIMITED |
发明人 |
FIELD, STEPHEN JAMES;MILLS, THOMAS CUTHBERT |
分类号 |
A61B17/34;A61B17/00;A61B19/00;B29C47/02 |
主分类号 |
A61B17/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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