Sampling device
US4991600A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B10/0275
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device is disclosed for use in for example obtaining a soft tissue biopsy sample from a patient. In one embodiment the device comprises an outer needle 16 and a sampling needle 18 in coaxial relationship, a handle 34 to which one of the needles e.g. the sampling needle is secured, and a lever arm 36 arranged to enable the other needle e.g. the sample needle 18 to be moved slidingly over the one needle. A spring 40 is arranged to bias the lever arm 36 and hence the sample needle 18 to a predetermined position. In use the needles 16,18 are inserted into a patient and a portion of tissue is trapped in a slot cut into an end portion of the sampling needle 18 as the outer needle 16 slides fully over the sampling needle. The portion of tissue is removed from the device by releasing a catch 38 which causes the outer needle 16 to be drawn back under the influence of the spring to expose the slot in the sampling needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.