CN219021299U

CN219021299U - Vertebral bone tissue puncture biopsy sampler

Info

Publication number: CN219021299U
Application number: CN202223053756.1U
Authority: CN
Inventors: 谭镇南
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-16
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a vertebral bone tissue aspiration biopsy sampler, which consists of a rotary-cut sleeve assembly, a sampling tube assembly and a central aspiration assembly, wherein the rotary-cut sleeve assembly comprises a sleeve handle and a sleeve tube body fixed at the lower end of the sleeve handle, and a rotary-cut head is arranged at the lower part of the sleeve tube body; the sampling tube assembly comprises a sampling handle and a hollow sampling rod fixed at the lower end of the sampling handle, a sampling head is arranged at the lower part of the sampling rod, the central puncture assembly comprises a puncture nut and a puncture needle fixed at the lower end of the puncture nut, the puncture needle penetrates through the sampling rod, and the puncture nut is rotationally fixed in the sampling handle; the inner diameter of the sampling head is larger than the outer diameter of the cutter edge of the rotary cutting head, and the sampling head is hidden in the rotary cutting head. The vertebral bone tissue puncture biopsy sampler provided by the utility model has the advantages of safe and reliable drilling, convenient sampling, capability of clamping a bone sample and completely taking out the bone sample in vivo, and capability of meeting the requirements of clinical diagnosis and pathological examination.

Description

Vertebral bone tissue puncture biopsy sampler

Technical Field

The utility model relates to the field of medical instruments, in particular to a vertebral bone tissue puncture biopsy sampler

Background

Along with the development of society and the change of living habits of people, the incidence rate of diseases of the spine, the bone joints and the soft tissues is increased year by year, percutaneous taking of the biopsy in the vertebral body is a common clinical technology in orthopaedics technology, and a biopsy sampler is a common device for performing biopsy analysis on the pathological change of a human body. When sampling, firstly, a sampling locating point is found through the insertion of a sampler through pedicle puncture, a central puncture needle is pulled out, then the sampler is drilled forward for a certain distance, so that a bone sample is reserved in a drilled hole, and when a drill rod is pulled out by the existing sampler, the bone sample in the drilled hole is connected with a bone body, and often, sampling is insufficient due to small friction force. The novel solution to the problems is adopted.

Disclosure of Invention

The utility model aims to provide a body bone tissue puncture biopsy sampler which is safe and reliable in drilling and convenient to sample, can clamp a bone sample, can completely take out the bone sample in vivo, and meets the requirements of clinical diagnosis and pathological examination.

The vertebral bone tissue biopsy sampler comprises a rotary-cut sleeve assembly, a sampling tube assembly and a central puncture assembly which are sequentially arranged from outside to inside, wherein the rotary-cut sleeve assembly comprises a sleeve handle and a sleeve tube body fixed at the lower end of the sleeve handle, and a rotary-cut head is arranged at the lower part of the sleeve tube body;

the sampling tube assembly comprises a sampling handle and a sampling rod fixed at the lower end of the sampling handle, an upper opening of the sampling rod penetrates through the sampling handle to be communicated with the outside, a sampling head is arranged at the lower part of the sampling rod, an arc-shaped sheet is annularly arranged on the sampling head, the sampling rod is sleeved in the sleeve tube body, and the sampling handle is detachably clamped in the sleeve handle;

the center puncture assembly comprises a puncture nut and a puncture needle fixed at the lower end of the puncture nut, the puncture nut is fixed in the sampling handle, the puncture needle penetrates through the sampling rod, and the length of the puncture needle is larger than that of the sleeve pipe body.

The knife edge of the rotary cutting head is of a conical tooth structure.

The arc-shaped thin sheet is not less than two, and the inner side surface of the arc-shaped thin sheet is provided with sampling thorns.

The outer diameter of the sampling head is larger than the inner diameter of the rotary cutter blade, and the arc-shaped sheet of the sampling head is sleeved and arranged in the rotary cutter.

The upper part of the sleeve handle is a concave opening, an upper clamping groove and a lower clamping groove are respectively and transversely arranged on two sides of the inside of the concave opening, and an upper convex rod and a lower convex rod are respectively and transversely arranged on the outer sides of two ends of the upper part of the sampling handle;

the upper clamping groove and the lower clamping groove are respectively connected with the upper protruding rod and the lower protruding rod in a clamping mode, and a gap between the sleeve handle and the sampling handle is not smaller than the upper-lower distance between the upper clamping groove and the lower clamping groove.

The middle part of the sampling handle is of an internal thread structure, the lower part of the puncture nut is of an external thread structure, and the puncture nut is rotationally fixed in the sampling handle.

The side part of the lower end of the sampling rod is provided with a side hole.

The utility model has the following advantages:

(1) The sampling head is of an elastic contractible structure, when the sampling head extrudes towards the rotary cutting head, the formed necking can break the joint of bone tissues, and the sampling is more sufficient and more reliable.

(2) The center puncture assembly is of a knob structure, the center puncture needle is more convenient to adjust and take out, and after the center puncture needle is taken out, the sleeve handle is more complete, and the drilling operation is convenient and stable.

(3) The rotary cutting sleeve assembly is connected with the sampling tube assembly in a clamping way through rotation, and the drilling operation and the sampling rod extraction are more convenient.

(4) The rotary cutting head is conical tooth-shaped, and the drilling efficiency is higher.

(5) The sampling rod is hollow, the lower part is provided with a side hole, and the observation and sampling are convenient and visual.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a sampler according to an embodiment of the present utility model.

FIG. 2 is a block diagram of a spin-cut sleeve assembly in accordance with an embodiment of the present utility model.

FIG. 3 is a block diagram of a coupon assembly in accordance with an embodiment of the present utility model.

FIG. 4 is a block diagram of a center piercing assembly in accordance with an embodiment of the utility model.

FIG. 5 is a schematic top view of the upper end of the sampler according to the embodiment of the present utility model.

FIG. 6 is a schematic diagram showing the assembly of the lower end part of the sampler according to the embodiment of the present utility model.

FIG. 7 is a schematic diagram of a sampling head according to an embodiment of the present utility model.

Wherein, in the figure: 1. a rotary cut sleeve assembly; 2. a sampling tube assembly; 3. a central piercing assembly; 11. a cannula handle; 12. a sleeve body; 21. a sampling handle; 22. a sampling rod; 31. a puncture nut; 32. a puncture needle; 111. an upper clamping groove; 112. a lower clamping groove; 121. cutting the head in a rotating way; 211. an upper protruding rod; 212. a lower protruding rod; 221. a sampling head; 222. a side hole; 223. sampling thorns; arcuate tabs, 224.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail below by referring to the accompanying drawings and examples.

Referring to fig. 1-7, a vertebral bone tissue aspiration biopsy sampler comprises a rotary-cut sleeve assembly 1, a sampling tube assembly 2 and a central puncture assembly 3 which are sequentially arranged from outside to inside, wherein the rotary-cut sleeve assembly 1 comprises a sleeve handle 11 and a sleeve pipe body 12 fixed at the lower end of the sleeve handle 11, and a rotary-cut head 121 is arranged at the lower part of the sleeve pipe body 12;

the sampling tube assembly 2 comprises a sampling handle 21 and a sampling rod 22 fixed at the lower end of the sampling handle 21, an upper opening of the sampling rod 22 penetrates through the sampling handle 21 to be communicated with the outside, a sampling head 221 is arranged at the lower part, an arc-shaped sheet 224 is annularly arranged at the lower part of the sampling head 221, the sampling rod 22 is sleeved in the sleeve tube body 12, and the sampling handle 21 is detachably clamped in the sleeve handle 11;

the central puncture assembly 3 comprises a puncture screw cap 31 and a puncture needle 32 fixed at the lower end of the puncture screw cap 31, the puncture screw cap 31 is fixed in the sampling handle 21, the puncture needle 32 is arranged in the sampling rod 22 in a penetrating way, and the puncture needle 32

The edge of the rotary cutting head 121 is in a conical tooth structure.

The number of the arc-shaped thin sheets 224 is not less than two, and the sampling thorns 223 are arranged on the inner side surface of the arc-shaped thin sheets 224.

The outer diameter of the sampling head 221 is larger than the inner diameter of the knife edge of the rotary cutting head 121, and the arc-shaped thin sheet 224 of the sampling head 221 is sleeved and arranged in the rotary cutting head 121.

The upper part of the sleeve handle 11 is a concave opening, an upper clamping groove 111 and a lower clamping groove 112 are respectively and transversely arranged on two sides of the inside of the concave opening, and an upper convex rod 211 and a lower convex rod 212 are respectively and transversely arranged on the outer sides of two ends of the upper part of the sampling handle 21;

the upper clamping groove 111 and the lower clamping groove 112 are respectively clamped with the upper convex rod 211 and the lower convex rod 212, and the gap between the sleeve handle 11 and the sampling handle 21 is not smaller than the upper-lower distance between the upper clamping groove 111 and the lower clamping groove 111.

The middle part of the sampling handle 21 is of an internal thread structure, the lower part of the puncture nut 31 is of an external thread structure, and the puncture nut 31 is rotationally fixed in the sampling handle 21.

The side of the lower end of the sampling rod 22 is provided with a side hole 222, the sampled article is observed by the side hole 222, and the sample is taken out in an auxiliary way through the side hole 222.

The specific working process of the utility model comprises the following steps:

in operation, the bone is pierced by the piercing biopsy sampler, and when the set depth of sampling is reached, the center piercing assembly 3 is pulled out by rotating the piercing nut 31;

pressing the cannula handle 11 left and right, cutting bone by using the rotary cutting head 121, determining the cutting depth according to the size of the sampling amount, fixing the cannula handle 11 and horizontally rotating the sampling handle 21 after the sampling reaches the preset depth, enabling the upper protruding rod 211 and the lower protruding rod 212 of the sampling handle 21 to be separated from the upper clamping groove 111 and the lower clamping groove 112 of the cannula handle 11 respectively, and enabling the sampling handle 21 and the cannula handle 11 to form a certain horizontal angle;

pressing the sampling handle 21 to enable the sampling rod 22 to move downwards, pressing the sampling head 221 to the conical edge of the rotary cutting head 121, and as the outer diameter of the arc-shaped sheet 224 is larger than the inner diameter of the conical edge of the rotary cutting head 121, when the sampling head 221 moves downwards relative to the rotary cutting head 121, the arc-shaped sheet 224 contacts the inner side surface of the rotary cutting head 121 and is extruded, deformed and contracted to be smaller than the inner diameter of the edge of the rotary cutting head 121, the bone sample is extruded and cut through contraction of the arc-shaped sheet 224, and meanwhile, the sampling thorn 223 is inserted into the bottom of the bone sample to fix the bone sample;

the sleeve handle 11 is kept fixed, the sampling handle 21 is continuously rotated, the bone sample is completely separated from the bone body by utilizing torsion, when the rotation reaches 180 degrees, the upper protruding rod 211 is clamped into the lower clamping groove 112, and the sampling tube assembly 2 and the rotary cutting sleeve assembly 1 are clamped and fixed again.

The cannula handle 11 is gently pulled out, the sampler is taken out from the focus part, at this time, the bone sample is clamped in the sampling head 221, the cannula handle 11 is fixed, the sampling handle 21 is rotated in the opposite direction, the upper protruding rod 211 is separated from the lower clamping groove 112, the sampling tube assembly 2 is pulled out, the sampling head 221 is released and expanded, the sample is observed by the side hole 222, and the sample is taken out by the side hole.

The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.

Claims

1. The vertebral bone tissue aspiration biopsy sampler comprises a rotary-cut sleeve assembly (1), a sampling tube assembly (2) and a central puncture assembly (3) which are sequentially arranged from outside to inside, and is characterized in that the rotary-cut sleeve assembly (1) comprises a sleeve handle (11) and a sleeve tube body (12) fixed at the lower end of the sleeve handle (11), and a rotary-cut head (121) is arranged at the lower part of the sleeve tube body (12);

the sampling tube assembly (2) comprises a sampling handle (21) and a sampling rod (22) vertically fixed at the lower end of the sampling handle (21), the upper part of the sampling rod (22) penetrates through an opening of the sampling handle (21), a sampling head (221) is arranged at the lower part of the sampling rod (22), an arc-shaped sheet (224) is annularly arranged on the sampling head (221), the sampling rod (22) is sleeved in the sleeve tube body (12), and the sampling handle (21) is detachably clamped in the sleeve handle (11);

the center puncture assembly (3) comprises a puncture nut (31) and a puncture needle (32) fixed at the lower end of the puncture nut (31), the puncture nut (31) is fixed in the sampling handle (21), the puncture needle (32) is arranged in the sampling rod (22) in a penetrating mode, and the length of the puncture needle (32) is larger than that of the sleeve pipe body (12).

2. The vertebral bone tissue penetrating biopsy sampler of claim 1, wherein the blade of the rotary cutter (121) is a tapered tooth-like structure.

3. The vertebral bone tissue penetrating biopsy sampler of claim 1, wherein said arcuate sheets (224) are not less than two, and wherein said arcuate sheets (224) are provided with sampling lances (223) on an inner side thereof.

4. A centrum bone tissue penetrating biopsy sampler according to claim 3, wherein the outer diameter of the sampling head (221) is larger than the inner diameter of the blade of the rotary cutting head (121), and the arc-shaped sheet (224) of the sampling head (221) is sleeved in the rotary cutting head (121).

5. The vertebral bone tissue aspiration biopsy sampler according to claim 1, wherein the upper part of the cannula handle (11) is a concave port, an upper clamping groove (111) and a lower clamping groove (112) are respectively and transversely arranged on two sides of the inside of the concave port, and an upper protruding rod (211) and a lower protruding rod (212) are respectively and transversely arranged on the outer sides of two ends of the upper part of the sampling handle (21);

the upper clamping groove (111) and the lower clamping groove (112) are respectively clamped with the upper protruding rod (211) and the lower protruding rod (212), and a gap between the sleeve handle (11) and the sampling handle (21) is not smaller than the upper-lower distance between the upper clamping groove (111) and the lower clamping groove (111).

6. The vertebral bone tissue biopsy sampler of claim 1, wherein the middle part of the sampling handle (21) is an internal thread structure, the lower part of the puncture nut (31) is an external thread structure, and the puncture nut (31) is rotationally fixed in the sampling handle (21).

7. The vertebral bone tissue penetrating biopsy sampler of claim 1, wherein said sampling shaft (22) has a lateral opening (222) in a lower side thereof.