Surgery – Truss – Pad
Patent
1991-05-24
1993-10-26
Hindenburg, Max
Surgery
Truss
Pad
128763, A61B 1000
Patent
active
052556883
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an instrument for handling biopsies and
specimens.
When a doctor is bent on knowing the nature of tissue in general he takes one or more specimens of it and then has them analysed
Whatever the medical discipline in question actually is, the same type of problem is encountered when it is a question of manipulating specimens and biopsies. In fact specimens and biopsies have in general very little consistency and appear as small as sticky masses which adhere obstinately to the instrument which enables them to be taken. Depending upon the domain the manipulation is made still more difficult by reason of the very small size of the instruments taking the specimens and consequently of the specimens themselves.
In general the first phase of the manipulation consists in detaching the specimen from the instrument in order to deposit it in a bottle containing a preserving liquid, which bottle will then be dispatched to the laboratory for analysis. This first operation is in general effected while the patient is present and in the majority of cases the doctor reuses the same instrument for taking other specimens from the same patient. Under these conditions it is not possible to dip this instrument into the preserving liquid and shake it in it for the specimen to detach itself from the instrument. In fact it is out of the question to reuse an instrument contaminated with the preserving liquid. Moreover the preserving liquid would attack the instrument and rapidly render it unusable.
Hence of necessity the manipulation consists in holding the instrument containing or carrying the specimen above the bottle and trying to make the specimen fall into the bottle. In order to do this the operator utilizes a pointed instrument and unsticks the specimen by scratching it or scraping it. This method of proceeding has disadvantages of several orders. In the first place the specimen is often damaged, sometimes to such an extent that analysis is no longer even possible. A second disadvantage is that the cutting edge of the instrument, which is obviously essential, withstands this treatement poorly. A third disadvantage is that the doctor must in general wait for this operation to be finished and for his instrument to be returned to him for taking other specimens. The patient who is often placed in a not very comfortable situation does not particularly appreciate this enforced wait. In these last two cases the smaller or stickier the specimen the more difficult is the operation of transfer into the bottle and the longer the wait.
The same type of problem is likewise encountered in the analytical laboratories where the specimens also form the object of manipulations and transfers by the same means and with similar difficulties.
The aim of the present invention is to propose an instrument which enables the difficulties mentioned above to be met.
For this purpose the invention relates to an instrument for the handling of biopsies and specimens, characterized in that it includes pneumatic means for taking charge of the specimen.
Before starting the description of the several versions of the instrument in accordance with the invention, it is opportune to locate the particular technical problems which result from the very function of the instrument as well as from the setting in which it is intended to be used. In fact these problems are met again in the majority of the versions explained below.
It should be noted firstly that the user is in general holding another instrument in one of his hands. Consequently the transfer instrument should be able to be actuated by only one hand. That also means that the operator should be able to control with one hand and without difficulty the sequence of the suction effect and the ejection effet. In other words the instrument which by definition is self-contained should on its own allow the linking of these two phases without the step of accomplishing the first prejudicing the second.
The several versions of the instrument in accordance with the invention are described
REFERENCES:
patent: 3727602 (1973-04-01), Hyden et al.
patent: 3943917 (1976-03-01), Johansen
patent: 4366822 (1983-01-01), Altshaler
patent: 4660569 (1987-04-01), Etherington
patent: 4664128 (1987-05-01), Lee
patent: 4967762 (1990-11-01), De Vries
Bredam Medical Distribution S.A.
Hindenburg Max
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