US 10,307,142 B2Granted

Biopsy needle

OwnerAbul Bashar Mohammad Anwarul Islaminventor

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Abstract

A biopsy needle consisting of a main portion, a linking portion and a front end portion wherein the main portion has a first bore of uniform circular cross-section, the front end portion has a smaller second bore of uniform circular cross-section and the linking portion has a shoulder between the first bore and the second bore. The outer surface of the linking portion is tapered. The open front end has multiple projecting teeth which serve to cut. There may also be serrations on the outer surface of both the front end portion and the linking portion. The biopsy needle has slits or holes to facilitate the expansion of the captured biopsy specimen and to inject cement for bone support. The needle assembly has a non-slip grip on multiple surfaces and pins hold components in place during rotation of the assembly.

Claims13

Dependent claims

A biopsy needle comprising:

an elongate hollow needle having a main portion, a linking portion and a front end portion, wherein the main portion defines a first bore of uniform circular cross-section that extends along a major portion of a length of the hollow needle, the front end portion defining a second bore of uniform circular cross-section which is of smaller diameter than that of the first bore, and the linking portion linking the main portion to the front end portion;
within the linking portion an internal diameter of a linking bore decreases from the main portion to the front end portion, defining a shoulder;
and the front end portion having an open front end provided with a cutting formation;
wherein an outer surface of the front end portion is generally cylindrical and of uniform diameter, while the outer surface of the linking portion is of tapering shape;
and wherein the open front end defines a plurality of projecting teeth to define the cutting formation, wherein an entire outer surface of the front end portion and of the linking portion defines a plurality of grooves, wherein the plurality of grooves extend uninterrupted from a distal end of the main portion to a distal end of the front portion;
wherein between the plurality of grooves are a plurality of sharp-edged ridges;
wherein the plurality of grooves and the plurality of sharp-edged ridges extend along parts of parallel helical paths;
wherein the plurality of sharp-edged ridges form the plurality of projecting teeth at the distal end of the front portion;
wherein a width of the plurality of projecting teeth is consistent with a width of the plurality of sharp-edged ridges, and wherein a distal edge of the plurality of projecting teeth is straight and perpendicular to a longitudinal axis of the needle;
and
wherein the needle has at least two circular side holes.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/334,901Filed 26 Oct 2016 · us provisional application
Priority: 28 Oct 2015
Published: US 2017/0119359 A14 May 2017
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61B 10/0266
Pointed or sharp biopsy instruments: means for severing sample
A61B 10/0233
Instruments for taking cell samples or for biopsy: pointed or sharp biopsy instruments
A61B 10/025
Pointed or sharp biopsy instruments: for taking bone, bone marrow or cartilage samples
A61B 10/0275
Means for severing sample: with sample notch, e.g. on the side of inner stylet

Family

Application62/247,530Us provisional application · filed 28 Oct 2015
US 2017/0119359 A1Pre-grant publication · published 4 May 2017
US 10,307,142 B2This patent

From the US filing history. Foreign family members aren’t listed.

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