SU1306571A1 - Apparatus for puncture biopsy - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to collect the surface layer of the joint cartilage without penetrating into the subchondral bone layers. The device includes a tube-conductor, stylet and intake. The handles of the stylet and intake have a grooved surface. Stiletto has a triangular end sharpening. The end part of the intake has a retainer 6, to which the main cutting edge 7 adjoins, passing into the screw surface 8. On the opposite side, a flat 9 adjacent to the main cutting edge with an additional cutting edge 10. The device allows you to take a sufficient amount of material for research small diameter. 6 Il. S6 oo o5 ate

Description

The invention relates to medicine and can be used in rheumatology and orthopedics for diagnosing and monitoring the treatment of the musculoskeletal system.

The aim of the invention is to collect the superficial layer of the cartilage of the joint without penetrating the subchondral bone layers.

FIG. 1 shows a conductor tube, side view; in fig. 2 - trocar, side view; in fig. 3 - intake, side view; in fig. 4 - the lower part of the intake, front view {node I in FIG. 3); in fig. 5 is a view A of FIG. four; in fig. 6 is a view B in FIG. four.

The device for puncture biopsy contains a conductor tube 1, a stylet 2 and an intake 3. All parts of the device are made of high-strength stainless steel. For convenience in the handling process, the conductor tube is provided with a handle 4 with two rings 5 for fingers. The handles of the stylet 2 and the intake 3 have a grooved surface that prevents fingers from slipping. Stiletto 2 has a triangular sharpening end that protrudes from the conductor tube 1 during operation. The end part of the intake 3 has a needle, offset to the periphery of the intake, a latch 6, to which the main cutting edge 7 abuts, made at the end of the working end of the intake 3 perpendicular to its axis, passing into a screw surface 8, made at an angle of 20-30 ° to a plane perpendicular to its longitudinal axis. On the opposite side to the main cutting edge is adjacent a flat 9 with an additional cutting edge 10. In this case, the axis

to

15

20

25

thirty

The device is used as follows.

After anesthesia of the biopsy of the knee joint and the introduction of anesthetic into the joint cavity, the doctor pierces the skin and capsule of the joint. After insertion into the conductor tube 1 of the intake 3, the device is fixed with the help of a needle clamp 6 to the inner condyle of the femur and with two or three rotary movements of the intake around the axis passing through the center of the clamp, the main and additional cutting edges 10 are cut. up the screw surface of the intake and, after removing the intake from the conductor tube, it is sent for morphological examination.

The invention makes it possible to take an amount of material sufficient for investigation with its small diameter.

Claims (1)

Invention Formula A puncture biopsy device comprising a tube and a stylet with an intake having a cutting edge, characterized in that, in order to collect the surface layer of the articular joint without penetrating the subchondral bone layers, the cutting edge is made on the end of the working end of the intake perpendicular its axis, the working end of the intake has, from the cutting edge, a helical surface, made at an angle of 20-30 ° to the plane perpendicular to its longitudinal axis, a retainer and a pole with an additional cutting edge, made at different ends of the bases second cutting edge, wherein the clamp axis the latch and the cutting edge parallels, and the cutting edge are parallel The longitudinal axis of the intake. the longitudinal axis of the intake. o five 0 The device is used as follows. After anesthesia of the biopsy of the knee joint and the introduction of anesthetic into the joint cavity, the doctor pierces the skin and capsule of the joint. After insertion into the conductor tube 1 of the intake 3, the device is fixed with the help of a needle clamp 6 to the inner condyle of the femur and with two or three rotary movements of the intake around the axis passing through the center of the clamp, the main and additional cutting edges 10 are cut. up the screw surface of the intake and, after removing the intake from the conductor tube, it is sent for morphological examination. The invention makes it possible to take an amount of material sufficient for investigation with its small diameter. Invention Formula A puncture biopsy device comprising a tube and a stylet with an intake having a cutting edge, characterized in that, in order to collect the surface layer of the articular joint without penetrating the subchondral bone layers, the cutting edge is made on the end of the working end of the intake perpendicular its axis, the working end of the intake has, from the cutting edge, a helical surface, made at an angle of 20-30 ° to the plane perpendicular to its longitudinal axis, a retainer and a pole with an additional cutting edge, made at different ends of the bases second cutting edge, wherein the clamp axis and cutting edge flats parallel the longitudinal axis of the intake. FIG 3 In id FIG. five Editor M. Kelemesh Order 1354/4 Compiled by G. Frolov Tehred I. VeresKorrektor L. Natay Circulation 596 Subscription VNIIPI USSR State Committee for Invention and Discovery 1 13035, Moscow, Zh-35, Rau lska nab. 4/5 Production and Printing Enterprise, Uzhgorod, ul. Project, 4 (rig. B