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Improved bone biospy device

By designing a bone biopsy device with a semi-cylindrical plate with curved anchors, the problem of damage and low sampling efficiency of bone tissue sampling in the elderly is solved, safe and reliable cell wall and bone marrow collection is achieved, and the failure rate is reduced. and diagnosis time.

Active Publication Date: 2018-06-01
罗伯托赞贝利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applicants have in fact observed that when the above device is used in the elderly, a considerable rate of removal failures occurs as the trabecular bone has become brittle and "soft" and therefore not suitable for being captured by the above teeth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] A device according to the invention for bone biopsy and bone marrow aspiration is described with the aid of the drawings, which are generally designated with reference numeral 1 .

[0045] now refer to figure 1 , the device 1 comprises an outer sleeve 2 , a plate 4 adapted to be axially inserted into the sleeve 2 , and a stylet or mandrel 7 adapted to be axially inserted into the plate 4 .

[0046] The proximal end of the cannula 2 is fixed to the handle 3 . The proximal end of the plate 4 is fixed to a support 5 on which a latch 6 is mounted. The proximal end of the stylet 7 is fixed to the closure support 8 .

[0047] The cannula 2 consists of a cylindrical metal tube 20 and can advantageously also be a cannula with stops and divided into several centimeters similar to other biopsy instruments known in the art ( figure 1 ).

[0048] In case the sleeve 2 is divided into several centimeters, the outer surface of the sleeve is provided with notches or simply small line...

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PUM

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Abstract

A bone biopsy device is disclosed, comprising an outer cannula provided with a mouth with a cutting edge to section a frustule of spongy bone, a plate mounted slidably within the cannula and providedwith a semi-cylindrical portion at its distal end, and a stylet mounted slidably within the plate and provided with a pointed tip which protrudes from the mouth of the cannula to pierce the compact part of the bone. The mouth of the cannula has on its inside a narrowing and the semi-cylindrical part of the plate has at its distal end at least one pair of opposed lunettes / anchorages adapted to bend, with respect to a horizontal plane, towards the interior of the semi-cylindrical portion when they encounter the narrowing of the mouth, so as to occlude the lumen of the plate and clasp the base ofthe sectioned frustule and allow extraction of the frustule by means of the plate whilst the cannula is kept at the operating site, allowing aspiration of marrow after the frustule has been removed.

Description

technical field [0001] The present invention relates to the field of bone biopsy. Background technique [0002] Briefly, bone consists of a hard (compact or cortical) outer part and a porous (cancellous or trabecular) inner part that contains bone marrow in the pores. A bone biopsy involves sampling the inner part of the bone to determine the nature and development of blood cells (hematopoiesis). By removing internal fragments of the trabecular bone in the form of cylindrical plugs (cell walls), cells in their various stages of maturation, useful for diagnosis of hematological neoplastic diseases, are subsequently removed. [0003] Various types of bone biopsy devices suitable for removing the cell walls of spongy tissue for subsequent laboratory diagnostic testing are known commercially. [0004] Bone biopsy devices generally comprise a cylindrical cannula having a sharp incision in which is arranged a mandrel or stylet provided with a piercing tip extending from the mout...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B10/02
CPCA61B10/025A61B10/0266A61B2010/0258A61B2562/12A61B2090/036
Owner 罗伯托赞贝利