RU97114228A - TOOL AND DEVICE FOR BIOPSIUM AND METHOD OF BIOPSIUM - Google Patents

Claims (24)

1. A biopsy tool for extracting a tissue segment or similar biological material, comprising: a first part having an end with a means of penetrating into the tissue, and a wall having a through hole, and a second part mounted on the first part with the possibility of sliding, excision means for separation a tissue segment when the first part penetrates into it, so that when the second part glides along the first part in one direction, the excision means passes through the hole in the wall of the first part and thereby separates the tissue segment and to extract it.  2. A biopsy instrument, comprising: a substantially tubular cannula having at its front end an axial hole communicating with the cannula channel, and a through hole in the cannula wall near the front end, and a substantially cylindrical tube having a front end located along the axis with the opening communicating with a tube channel, and a protrusion, the end of which is bent to the axis of the tube, and the cannula is made with the possibility of installation in the tube channel, and the end of the tube has a shape that allows you to enter it into the hole in the wall of the cannula, and move axially forward with a deviation to the axis of the cannula.  3. The biopsy tool according to claim 2, in which the protrusion is made and arranged so that upon contact with the edge of the hole in the cannula wall, the end of the tube deviates to the axis of the cannula.  4. The biopsy instrument of claim 2, further comprising a second protrusion at the front end of the tube and a second hole in the cannula wall.  5. The biopsy instrument of claim 4, wherein the first and second openings are on diametrically opposite sides of the cannula wall.  6. The biopsy instrument of claim 2, further comprising a probe for insertion into the cannula.  7. The combination of the holder with the biopsy tool according to claim 2, the holder containing the first or second spring means, and the cannula and tube contain means of connection with the first and second spring means for axial movement of the cannula and holder, respectively, forward.  8. The holder according to claim 7, in which the first and second spring means are made and arranged so that they can move along the axis essentially sequentially the cannula with the tube and one tube.  9. A holder for holding a biopsy instrument for retrieving and manipulating a segment of tissue or a similar object, comprising: a first part for holding a first part of a biopsy instrument, a second part slidably mounted relative to the first part, a third part for holding a second parts of the biopsy tool mounted with the possibility of sliding to move in the first part, the fourth part, to hold the third part of the biopsy tool installed in the first part and with a possibility of sliding, a means of controlling the course for adjustable restriction of movement of the third part in the first part, and the first and second spring means associated with the third and fourth parts of the holder, for moving the second and third parts of the biopsy instrument in the distal direction.  10. A holder for a biopsy instrument having a first part and a second part arranged to slide in the first part, comprising: a body, means for connecting the body and the biopsy tool with the possibility of separation, and the first means for sequential axial forward movement together first and the second parts of the biopsy instrument relative to the body and the first part relative to the second part in the same direction.  11. The holder according to claim 10, in which the first means for sequential axial movement contains at least one coil spring in a compressed state.  12. The holder according to claim 10, further comprising means for holding the probe in the housing.  13. The holder according to claim 10, further comprising second means for sequentially moving the first part and together the first and second parts in a direction opposite to the forward direction, to eject the biopsy sample from the second part.  14. The holder according to claim 13, in which the second moving means comprises an ejector body and a compressed spring means, wherein the ejector body is located on the front of the housing and can move in the opposite direction, overcoming the force of the compressed spring means.  15. The holder according to claim 10, further comprising a stroke control element located in the housing for mounting a different axial dimension of the housing.  16. The holder according to claim 10, in which the first means of movement is a mechanical means.  17. The holder according to claim 16, in which the mechanical means is selected from the group comprising a coil spring, a leaf spring and elements made of elastomers.  18. The holder according to claim 10, in which the first means of movement is a hydraulic system.  19. The holder according to claim 10, in which the first means of movement is an electrical device comprising solenoids with iron cores.  20. A biopsy device containing a biopsy tool for extracting a tissue segment or similar biological material and means for holding and managing a biopsy instrument during extraction of a tissue segment, the biopsy tool comprising: a first substantially tubular portion having penetration means at the end into a tissue, a second substantially tubular portion, slidingly mounted on the first portion and having excision means for separating the tissue segment when the first penetrates into it parts, and the holding and controlling means comprises first and second spring means, the biopsy tool being held so by the holding and controlling means that the first spring means is able to simultaneously move the first and second parts forward, and the second spring means is able to move the second part forward to separate the segment tissue.  21. The biopsy device according to claim 20, further comprising means for sequentially actuating the first and second spring means.  22. A disposable kit comprising a cannula having an end and a wall with an opening near the end, a tube for installation on a cannula with a sliding possibility, having an end with a protrusion in the form of a finger for insertion into an opening in the wall of the cannula, and a probe for installation in a cannula with a possibility of sliding .  23. The method of sampling using a biopsy, which includes the following operations: the introduction of a biopsy instrument into the tissue in a place near the sample to be taken, the simultaneous movement of the first part and the second part of the biopsy tool for introducing the sample into the first part, moving the second part to separate the sample from the tissue, removing the biopsy tool from the tissue and moving the third part of the biopsy tool to eject the sample from the first part.  24. The method according to p. 23, which further comprises the operation of moving the second part relative to the first part, and then the operation of moving the third part relative to the first part.