求翻译：我们了解到A是医生使用于心脏手术后的缝合。但是A无法抓住针，以至于无法进行缝合。医生认为应该在A的工作端口加上螺纹，以便A能夹住针，使针不容易从A的工作端逃脱。并且这个A是今年的三月我们从你们那收到的·我们觉得应该是保内的·所以申请免费的修理或者更换是什么意思？

We understand that a suture after doctors use in cardiac surgery. But a can not grasp the needle, so that can not be sutured. The doctors believe should be the work of a port with a thread so that a grip the needle, the needle is not easy to escape from the work of a side. And a is in March of this

We understand that medical A is used in the stitching after cardiac surgery. But unable to grasp A PIN, so that you cannot be sewn. Doctors believe that the work should be in A port coupled with thread, so as to be able to hold the A PIN, so that pin is not easy work from the end A escape. And this

We understood A is doctor uses after the heart surgery suturing.But A is unable to hold the needle, is unable to carry on sutures.Doctor thought should add on the thread in the A work port, in order to A can grip the needle, causes the needle to escape not easily from the A working end.And this A is

We learn about a doctor for heart surgery after stitches. But a cannot grasp the needle, so they could not be stitched. Doctors believe should be a working port with thread, to a holding needle, the needle is not easy to escape from a working port. And this was in March of this year we received from

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