Biopxy system with hemostatic insert

A biopsy needle for taking a biopsy specimen from a site in a patient including an outer tubular cannula having an axis, an inner tubular cannula coaxial with and relatively displaceably received in said outer cannula, a stylet coaxial with and relatively displaceably received in said inner cannula, each said outer and inner cannula and said stylet having a distal portion including a distal end and a proximal portion extending from said distal portion, each said inner cannula and said stylet being axially displaceable relative to said outer cannula between retracted and extended positions in which the distal portions thereof are retracted within the distal portion of said outer cannula in said retracted position and extended axially outwardly spaced from the distal end of said outer cannula to extend into said site in said extended position, means for severing said specimens at said site including means for capturing said specimen in said needle, the improvement comprising a hemostatic insert supported on said distal portion of said inner cannula for displacement therewith from said retracted position to said extended position, said insert being separable from said distal portion of said inner cannula to remain at said site upon removal of said distal portion of said inner cannula from said site, and recessed surface means for receiving said insert in said distal portion of said outer cannula when said inner cannula is in said retracted position.

A biopsy needle for taking a biopsy specimen from a site in a patient including an outer tubular cannula having an axis, an inner tubular cannula coaxial with and relatively displaceably received in said outer cannula, a stylet coaxial with and relatively displaceably received in said inner cannula, each said outer and inner cannula and said stylet having a distal portion including a distal end and a proximal portion extending from said distal portion, each said inner cannula and said stylet being axially displaceable relative to said outer cannula between retracted and extended positions, means for severing said specimens at said site including means for capturing said specimen in said needle, the improvement comprising a hemostatic insert supported on said distal portion of said inner cannula for displacement therewith from said retracted position to said extended position, said insert being separable from said distal portion of said inner cannula to remain at said site upon removal of said distal portion of said inner cannula from said site, and means for receiving said insert in said distal portion of said outer cannula in said retracted position of said inner cannula, said distal portion of said inner cannula including support means for said insert, said support means including pushing means engaging said insert to displace said insert into said site with said distal portion of said inner cannula during displacement of said inner cannula from said retracted to said extended position.

A biopsy needle for taking a biopsy specimen from a site in a patient comprising an outer tubular cannula having an axis, an inner tubular cannula coaxial with and relatively displaceably received in said outer cannula, a stylet coaxial with and relatively displaceably received in said inner cannula, each said outer and inner cannula and said stylet having a distal portion including a distal end and a proximal portion extending from said distal portion, each said inner cannula and said stylet being axially displaceable relative to said outer cannula between retracted and extended positions in which the distal portions thereof are retracted within the distal portion of said outer cannula in said retracted position and extended axially outwardly spaced from the distal end of said outer cannula to extend into said site in said extended position, said distal portion of said stylet including a cutting recess for severing said specimen at said site, said distal portion of said inner cannula including means for capturing said specimen in said cutting recess, a hemostatic insert supported on said distal portion of said inner cannula for displacement therewith from said retracted to said extended position, said insert being separable from said inner cannula to remain at said site upon removal of said distal portion of said inner cannula therefrom, said insert having an outer surface including recessed surface means for receiving said insert within said distal portion of said outer cannula when said inner cannula is in said retracted position.