CN216702573U - Novel centrum bone tissue get biopsy instrument - Google Patents

Abstract

The utility model relates to a novel centrum bone tissue biopsy taking instrument, which comprises an outer tube sampling assembly, an inner tube sampling assembly and a push rod assembly, wherein the outer tube sampling assembly comprises an outer tube sampling handle and a sampling outer tube, the sampling outer tube is fixedly connected with the outer tube sampling handle, the far end of the sampling outer tube is provided with an outer tube sampling component, the outer tube sampling component is subjected to reducing treatment, the inner tube assembly comprises an inner tube sampling handle, an inner tube connecting piece, a rotating piece and a sampling inner tube, the outer tube sampling handle is fixedly connected with the inner tube sampling handle, the inner tube connecting piece is fixedly connected with the sampling inner tube, the far end of the sampling inner tube is provided with the inner tube sampling component, and the inner tube sampling component can be formed by one or a plurality of sheet structures, through the rotation piece, sample inner tube connecting piece and inner tube are along axial forward, make inner tube sample section follow the outer tube sample section closure that gos forward of reducing, realize the function of cutting off of bone tissue.

Description

Novel centrum bone tissue get biopsy instrument

Technical Field

The utility model belongs to the field of medical instruments, and relates to a centrum bone tissue biopsy taking instrument.

Background

The main indications of percutaneous vertebroplasty are osteoporosis compression fracture and vertebral tumor, wherein the vertebral tumor is the earliest target of percutaneous vertebroplasty, and a needle biopsy is needed during the operation process in order to determine the pathology of the tumor. At present, the most common biopsy taking instrument in the market consists of a needle core part and a needle tube part, and is mainly inserted into a vertebral body through the needle tube part, and bone tissues in the vertebral body enter the needle tube through rotation or a suction device so as to realize the extraction of lesion tissues. However, in clinical feedback, the existing instruments are difficult to retain bone tissues in the needle tube during withdrawal during operation, and a sufficient amount of bone tissues cannot be obtained for pathological examination with a high probability.

In order to solve the above problems, there is a need for a biopsy instrument that ensures that more bone tissue can be harvested

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects of the prior art, the present invention is directed to a biopsy instrument for harvesting bone tissue of a vertebral body, which solves the above-mentioned problems of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a novel centrum bone tissue biopsy instrument comprises an outer tube sampling component, an inner tube sampling component and a push rod component, wherein the outer tube sampling component comprises an outer tube sampling handle and a sampling outer tube, the sampling outer tube is fixedly connected with the outer tube sampling handle, the far end of the sampling outer tube is provided with an outer tube sampling component, the outer tube sampling component is subjected to reducing treatment, the inner tube component comprises an inner tube sampling handle, an inner tube connecting piece, a rotating piece and a sampling inner tube, the outer tube sampling handle is fixedly connected with the inner tube sampling handle, the inner tube connecting piece is fixedly connected with the sampling inner tube, the far end of the sampling inner tube is provided with an inner tube sampling component, the inner tube sampling component can be formed by one or more sheet structures, and the inner tube connecting piece and the inner tube are axially advanced by rotating the rotating piece to enable the inner tube sampling component to advance along the reducing outer tube sampling component to be closed, realize the cutting off function of bone tissue, push rod subassembly includes push rod handle and push rod, the push rod with push rod handle fixed connection, the gliding insertion of push rod the intraductal sample.

Further, the end part of the outer tube sampling part is provided with a tooth shape, and the tooth shape can be three teeth or multiple teeth.

Furthermore, the reducing angle of the outer tube sampling part is 120-180 degrees.

Further, the end part of the push rod is in a plane shape, a triangular shape or a multi-edge shape.

Compared with the prior art, the utility model has the following advantages and progresses: the instrument for taking the biopsy of the vertebral body bone tissue has simple operation and convenient use, and can separate the required bone tissue from the vertebral body by closing the inner tube sampling component in the using process to obtain enough bone tissue for pathological examination.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the inner sampling tube assembly of the present invention;

FIG. 3 is a schematic structural view of an outer sampling tube assembly of the present invention;

FIG. 4 is a schematic structural view of the pushrod assembly of the present invention;

FIG. 5 is a schematic structural view of an outer sampling tube member of the present invention;

FIG. 6 is a schematic view of the end of the push rod of the present invention;

FIG. 7 is a schematic view of a surgical procedure according to the present invention;

FIG. 8 is a schematic view of the inner sampling tube grasping bone tissue according to the present invention;

FIG. 9 is a schematic diagram of the recycled inner sampling tube of the present invention;

FIG. 10 is an operational view of the push rod assembly of the present invention inserted into a sample inner tube assembly;

FIG. 11 is a schematic view showing the pushing out of the bone tissue according to the present invention.

Wherein the reference numbers in the figures are as follows: 1 is an inner tube sampling component, 11 is an inner tube sampling handle, 111 is a handle limiting part, 12 is a rotating part, 13 is an inner tube connecting piece, 14 is a sampling inner tube, 141 is an inner tube sampling component, 2 is an outer tube sampling component, 21 is an outer tube sampling handle, 22 is an outer sampling tube, 221 is an outer tube sampling component, 3 is a push rod component, 31 is a push rod handle, 32 is a push rod, 321 is a push rod end part

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and examples.

The proximal end of the utility model refers to the end close to the operator, and the distal end refers to the end far away from the operator.

Examples

As shown in fig. 1-4, a novel biopsy instrument for vertebral bone tissue sampling comprises an inner tube sampling assembly 1, an outertube sampling assembly 2 and apush rod assembly 3, wherein the outertube sampling assembly 2 comprises an outertube sampling handle 21 and anouter tube sampling 22, the outertube sampling handle 21 is fixedly connected with theouter tube sampling 22, an outertube sampling component 221 is arranged at the far end of theouter tube sampling 22, the outertube sampling component 221 performs diameter-changing processing, the inner tube sampling assembly 1 comprises an innertube sampling handle 11, an innertube connecting piece 13, arotating piece 12 and aninner sampling tube 14, the outertube sampling handle 21 is fixedly connected with the innertube sampling handle 11, the innertube connecting piece 13 is fixedly connected with theinner sampling tube 14, the far end of theinner sampling tube 14 is provided with an innertube sampling component 141, and the innertube sampling component 141 can be composed of one or a plurality of sheet structures, through rotatingrotate piece 12, innertube connecting piece 13 with sampleinner tube 14 advances along the axial, makes innertube sample part 141 along the reducing outertube sample part 221 advances closed, realizes the function of cutting off of bone tissue,push rod assembly 3 includespush rod handle 31 andpush rod 32, the push rod with push rod handle fixed connection, the push rod can gliding the inserting in the sample inner tube.

As shown in fig. 5, the end of the outertube sampling part 221 is provided with a tooth shape, which may be three or more teeth;

as shown in fig. 5, the reducing angle of the outertube sampling part 221 is 120-180 °;

as shown in fig. 6, theend 321 of the push rod is planar, triangular or polygonal;

the specific surgical procedure is as follows: firstly, establishing a puncture channel under a C-shaped arm, then, puncturing a novel centrum bone tissue biopsy taking device into a puncture needle tube to enable the end of the device to be flush with the end face of the puncture needle tube, as shown in figure 7, withdrawing thepush rod handle 31, then, continuously puncturing the device into a centrum, observing to a desired position under a perspective view, rotating therotating part 12, enabling the innertube connecting part 13 and the samplinginner tube 14 to axially advance, enabling the innertube sampling part 141 to advance and close along the outertube sampling part 221 with the diameter being changed (as shown in figure 8), then, rotating the device clockwise and anticlockwise and taking the device out from the puncture needle channel to realize the cutting function of the bone tissue, then, rotating therotating part 12, recovering the samplinginner tube 14 to be incapable of rotating (as shown in figure 9), and finally, inserting thepush rod component 3 into the samplinginner tube 14 in a sliding manner, pushing the bone tissue out (as shown in fig. 10-11).

Claims (4)

1. The utility model provides a novel biopsy instrument is got to centrum bone tissue, its characterized in that, includes inner tube sample subassembly (1), outer tube sample subassembly (2) and push rod subassembly (3), outer tube sample subassembly (2) includes outer tube sample handle (21) and sample outer tube (22), sample outer tube (22) with outer tube sample handle (21) fixed connection, sample outer tube (22) distal end is provided with outer tube sample part (221), reducing processing is done to outer tube sample part (221), inner tube sample subassembly (1) includes inner tube sample handle (11), inner tube connecting piece (13), rotation piece (12) and sample inner tube (14), outer tube sample handle (21) with inner tube sample handle (11) fixed connection, inner tube connecting piece (13) with sample inner tube (14) fixed connection, sample inner tube (14) distal end is provided with inner tube sample part (141), inner tube sample part (141) can be that one or more lamellar structure constitutes, through rotating rotate piece (12), inner tube connecting piece (13) with sample inner tube (14) advance along the axial, make inner tube sample part (141) are along the reducing outer tube sample part (221) advance the closure, realize the function of cutting off of bone tissue, push rod subassembly (3) are including push rod handle (31) and push rod (32), the push rod with push rod handle fixed connection, the push rod can gliding insertion in the sample inner tube.

2. The instrument for taking the biopsy of the bone tissue of a vertebral body according to claim 1, characterized in that the end of the outer tube sampling part (221) is provided with a tooth shape which can be three or more teeth.

3. The apparatus for biopsy of bone tissue of vertebral body according to claim 1, wherein the outer tube sampling member (221) has a variable diameter angle of 120 ° -180 °.

4. The apparatus for biopsy of bone tissue of vertebral bodies according to claim 1, wherein the end (321) of the push rod is shaped as a plane, a prism or a polygon.

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