CN210811213U

CN210811213U - Novel spine vertebral body tissue biopsy device

Info

Publication number: CN210811213U
Application number: CN201921395157.3U
Authority: CN
Inventors: 辛志军; 辛向军; 陈星�; 敖俊; 廖文波; 王岩
Original assignee: Affiliated Hospital of Zunyi Medical University
Current assignee: Affiliated Hospital of Zunyi Medical University
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-06-23
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a novel backbone centrum tissue biopsy ware belongs to backbone centrum tissue surely and gets the device field. Comprises an outer tangent tube, an inner tangent tube which is arranged in the outer tangent tube and is in threaded connection with the outer tangent tube, and a PVP injector which is detachably connected with the outer tangent tube; the outer incised tube includes outer connecting portion, sets up at the diversion portion of outer connecting portion bottom and sets up the external tooth that cuts in outer connecting portion bottom, the hole diameter of diversion portion reduces along the cutting direction of feed of outer incised tube gradually, the utility model discloses be convenient for the doctor takes out patient's backbone centrum tissue and carries out detection observation such as biopsy, easy operation and improved operation efficiency and tissue and surely get the success rate, use flexible cohesion blade to separate the rotary-cut backbone centrum column base bottom of outer tangent tube intracavity simultaneously and be favorable to taking out the tissue, make the pathology sample quantity that gains in the operation more, provide convenient for the pathological diagnosis of histology, improved the success rate.

Description

Novel spine vertebral body tissue biopsy device

Technical Field

The utility model relates to a backbone centrum tissue excision device field, concretely relates to novel backbone centrum tissue biopsy device.

Background

The spine vertebral body lesions are various in types, the nature of the lesions is determined to finally need histopathological diagnosis to be a gold standard, and the best method for preoperative pathological diagnosis is vertebral body tissue aspiration biopsy. The biopsy device capable of safely obtaining enough vertebral body tissues is an important tool for successfully carrying out vertebral body tissue biopsy of the spine, and the clear property of the pathological changes of the vertebral body tissues has important significance for reasonably selecting a treatment scheme and evaluating the curative effect. Although the surgical incision biopsy of the lesion tissue has the characteristics of high accuracy, sufficient material taking and the like, the surgical incision biopsy has the defects of high cost, large wound, tumor pollution on surrounding normal tissues and the like, and is not adopted as a conventional tissue biopsy scheme. Percutaneous aspiration biopsy is a safe, minimally invasive and cheap means, and has become a common method for biopsy before vertebral body bone destruction, but the traditional vertebral body biopsy device for the vertebral column has less material selection and unsatisfactory effect. In the past, an Ackermann biopsy device of COOK company is used for taking out vertebral body tissues through pedicles of vertebral arch in clinic, and because the biopsy device is difficult to break bone at the bottom of a material taking channel, the quantity of pathological samples obtained in operation is often small or the pathological samples cannot be taken out, and certain difficulty is brought to histological pathological diagnosis.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provided a novel backbone centrum tissue biopsy device, concrete technical scheme is as follows:

a novel spine vertebral tissue biopsy device comprises an external tangent tube, an internal tangent tube arranged in the external tangent tube and in threaded connection with the external tangent tube, and a PVP injector detachably connected with the external tangent tube; the outer cutting pipe includes outer connecting portion, sets up at the diversion portion of outer connecting portion bottom and sets up the outer incisor tooth in the outer connecting portion bottom, the hole diameter of diversion portion reduces along the cutting direction of feed of outer cutting pipe gradually, interior cutting pipe including set up in outer connecting portion and with outer connecting portion threaded connection's in-connection portion, set up the flexible sword pipe in the connecting portion bottom, be equipped with the separating tank that the multiunit distributes along flexible sword pipe axial on the flexible sword pipe, the separating tank is split into the flexible blade of multiunit with flexible sword pipe, flexible blade bottom is equipped with interior incisor tooth, flexible blade folds gradually and separates absolutely to the intraductal centrum tissue basal portion of internal cutting under the forcing of diversion portion, just the position of folding of flexible blade is located same plane with the outer terminal surface of diversion portion.

The utility model discloses well doctor reaches the target point position along the internal tangent pipe that accurate guide pin of location will have cup jointed with external tangent pipe in the same direction as the rotatory vertebra that goes into of pedicle of vertebral arch, carries out the drilling and makes external tangent pipe go deep into inside the backbone centrum through the external cutting tooth that sets up on external tangent pipe promptly, and part backbone centrum tissue then enters into the inner chamber of internal tangent pipe through diversion portion inner chamber. Then the doctor rotates the inner cutting pipe to make the flexible knife pipe of the inner cutting pipe gradually stride across the diversion portion, when the flexible blade arranged on the inner cutting pipe passes through the diversion portion, because the inner wall of the diversion portion and the inner wall of the outer connecting portion are a certain inclination angle, the flexible blade with excellent elastic performance can gradually draw close under the extrusion action of the inner wall of the diversion portion, in the drawing-close process of the flexible blade, the inner cutting teeth arranged on the flexible blade gradually cut the bottom of the vertebral column base in the outer cutting pipe until the flexible blade is finally folded and cut off the bottom of the vertebral column base which is cut into the through hole of the biopsy device in a rotary mode. After the cutting and the breaking are finished and the samples in the inner cutting tube and the inner cutting tube are taken out, the medical care personnel insert the PVP injector into the outer cutting tube and fill the bone cement in the gap part of the vertebral body.

Preferably, the outer cutting teeth and the inner cutting teeth are oriented in the same direction as the direction of rotation of the outer cut tube and the inner cut tube, respectively.

The utility model discloses a setting the orientation of outer cutting teeth and interior cutting teeth is the same with the direction of rotation of outer cutting pipe and interior cutting pipe, has reduced the friction of outer cutting teeth and interior cutting teeth at the in-process of excision backbone centrum its with the backbone centrum, has reduced the wearing and tearing volume of outer cutting teeth and interior cutting teeth, has improved the cutting efficiency of outer cutting teeth and interior cutting teeth.

Preferably, one end of the outer cutting pipe, which is far away from the outer cutting teeth, is provided with a first handle.

The utility model discloses a set up the first handle on the circumcision pipe, the rotatory circumcision pipe of the doctor of being convenient for carries out the drilling to the centrum, has improved the utility model discloses a convenience, controllability and practicality have reduced medical personnel's physical power and have paid out, have reduced the operation risk.

Preferably, the outer cutting teeth are arranged at the bottom end of the outer cutting pipe and are uniformly distributed in the radial direction, and the inner cutting teeth are arranged at the bottom end of the inner cutting pipe and are also uniformly distributed in the radial direction.

The utility model discloses a setting is outside cutting pipe bottom side and be radial evenly distributed's external cutting tooth and set up including the internal cutting tooth that also is radial evenly distributed in the internal cutting pipe bottom, improved the utility model discloses the cutting effect and the cutting efficiency of external cutting tooth and internal cutting tooth in china and abroad.

Preferably, the inner cutting pipe is provided with a second handle, and a through hole communicated with the outer cutting pipe is formed in the second handle.

The utility model discloses a handle on the pipe is surely managed in the doctor's operation of being convenient for including setting up has improved the utility model discloses a convenience and accurate regulation and control to through set up in the second handle and with the through-hole of circumscribed pipe intercommunication, be convenient for medical personnel take out the biopsy sample from the inscribe intraductal, through the threaded connection of circumscribed pipe and inscribe pipe, make the doctor can get into accurate control at the operation process to the depth of insertion of inscribed pipe, realized the security and the fine setting controllability of inscribed pipe and circumscribed pipe.

Preferably, the thickness of the flexible blade is 0.3mm to 0.4mm, and the material adopted by the flexible blade is medical stainless steel.

The utility model discloses an adopt the material to be the flexible blade of medical stainless steel, satisfy the clean standard of operation, prevent the utility model discloses cause the infection to patient's health in the use, flexible blade has better elasticity performance simultaneously, makes flexible blade be difficult for appearing the condition such as rupture in the use.

Preferably, the diameter of the large end of the inner hole of the turning part is 2.5mm to 3mm, and the diameter of the small end of the inner hole of the turning part is 1.5mm to 2.5 mm.

Preferably, the outer wall of the externally tangent pipe and the outer wall of the internally tangent pipe are provided with scales.

The utility model discloses a setting is at the scale of excision tub of outer wall and incision tub of outer wall, and the doctor of being convenient for masters the depth of cut of excision pipe and incision pipe at any time, has improved the utility model discloses an operation accuracy nature and controllability.

The utility model discloses following beneficial effect has:

the utility model discloses the rotatory circumcision pipe of well doctor carries out the drilling and makes circumscribed pipe go deep into the backbone centrum inside the external cutting tooth through setting up on the circumcision pipe, and part backbone centrum then enters into the hole of outer connecting portion through diversion portion inner chamber. Then the doctor inserts the inner cutting tube which is sleeved into the outer cutting tube in a rotating cutting depth mode, the inner cutting tube and the flexible knife tube pass through the turning portion through rotating the inner cutting tube, and the flexible blades are gradually closed. When the flexible blade that sets up on the internal pipe that cuts passes through diversion portion, because the inner wall of diversion portion is certain inclination with the inner wall of outer connecting portion, consequently the better flexible blade of elasticity performance then can draw close gradually under the squeezing action of diversion portion inner wall, at the in-process of drawing close of flexible blade, the internal cutting tooth that sets up on flexible blade then cuts spinal column vertebral column basal portion in the siphunculus gradually, until flexible blade finally folds and cuts off spinal column vertebral column in the siphunculus.

The utility model discloses carry out the root to spinal column in the siphunculus and separate completely and the tissue is surely got, enlarge the tissue and surely get the volume, be convenient for the doctor take out patient's spinal column centrum tissue and carry out detection observation such as biopsy, easy operation has improved operation efficiency and tissue surely gets the success rate, makes the pathological sample quantity of getting in the operation more, provides convenient for the pathological diagnosis of histology; meanwhile, the internal incision tube and the vertebral body tissue can be independently detached and taken out, the external incision tube is reserved, and the surgical incision tube can be further connected with a PVP injector to implement vertebral body bone cement injection molding.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the present invention in which the cutting tube is engaged with the PVP injector;

FIG. 3 is a schematic structural view of the present invention in an initial state;

fig. 4 is a cross-sectional view of the present invention in a use state;

FIG. 5 is a schematic structural view of the folding of the middle flexible blade according to the present invention;

FIG. 6 is a schematic structural view of the cut pipe of the present invention;

FIG. 7 is a schematic structural view of the middle incised tube of the present invention;

fig. 8 is a partial enlarged view of a portion a in fig. 7.

In the figure: 1-cutting out a pipe; 2-cutting the tube; 8-PVP injector; 11-an external connection; 12-a direction changing portion; 13-external cutting teeth; 21-an inner connecting part; 22-a flexible knife tube; 3-a separation tank; 221-a flexible blade; 4-internal cutting teeth; 5-a first handle; 6-a second handle; 61-a through hole; and 7-graduation.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1 to 8, the utility model discloses a be used for going deep into patient's spine internal circumscribed pipe 1, set up in circumscribed pipe 1 and with 1 threaded connection's of circumscribed pipe inscribed pipe 2 and with circumscribed pipe 1 can dismantle the PVP syringe 8 of being connected, PVP syringe 8 is used for filling bone cement in space and the vertebra that leaves after patient's spine centrum tissue surely gets. The internal cutting pipe 2 is used for the backbone centrum basal part in the external cutting pipe 1 to break and incise completely for tissue biopsy, the equal medical stainless steel of material that external cutting pipe 1 and internal cutting pipe 2 adopted satisfies the clean standard of operation, prevents the utility model discloses cause the infection to patient's health in the use. The outer wall of the outer cutting pipe 1 and the outer wall of the inner cutting pipe 2 are all provided with scales 7, the utility model discloses a scale 7 of the outer wall of the outer cutting pipe 1 and the outer wall of the inner cutting pipe 2 is provided, the doctor of being convenient for masters the depth of cut of the outer cutting pipe 1 and the inner cutting pipe 2 at any time, and improves the utility model discloses an operation accuracy and controllability.

With further reference to fig. 1 to 3, one end of the outer cutting tube 1 is provided with outer cutting teeth 13 for drilling vertebral bodies of the spine. The orientation of outer cutting teeth 13 is the same with the direction of rotation of circumscribed pipe 1, the utility model discloses a setting the orientation of outer cutting teeth 13 is the same with the 1 direction of rotation of circumscribed pipe, has reduced the friction of outer cutting teeth 13 at the in-process of excision backbone centrum its with the backbone centrum, has reduced the wearing and tearing volume of outer cutting teeth 13, makes the used repeatedly that outer cutting pipe 1 can be many times, has improved the cutting efficiency of outer cutting teeth 13. Simultaneously the setting of outer cutting teeth 13 is in the 1 bottom of circumscribed pipe and be radial evenly distributed, the utility model discloses a setting is in the 1 bottom side of circumscribed pipe and is radial evenly distributed's drilling tooth and has further improved the cutting efficiency of cutting teeth.

Further refer to fig. 1 to 6, the one end that external cutting tooth 13 was kept away from to circumscribed pipe 1 is equipped with first handle 5, the utility model discloses a set up first handle 5 on circumscribed pipe 1, the rotatory circumscribed pipe 1 of the doctor of being convenient for and carry out the drilling to the centrum, improved the utility model discloses a convenience and practicality have reduced medical personnel's physical power and have paid out. When a medical professional needs to drill the resected tube 1 into the vertebral body of the patient's spine, the first handle 5 is gripped and the resected tube 1 is rotated and the resected tube 1 can be drilled into the vertebral body of the patient's spine. The outer cutting pipe 1 comprises an outer connecting portion 11 in threaded connection with the inner cutting pipe 2, a turning portion 12 arranged at the bottom end of the outer connecting portion 11 and used for being matched with the inner cutting pipe 2, and outer cutting teeth 13 arranged at the bottom end of the outer connecting portion 11, the diameter of an inner hole of the turning portion 12 is gradually reduced along the cutting feeding direction of the outer cutting pipe 1, and therefore the inner wall of the turning portion 12 and the inner wall of the outer connecting portion 11 are at a certain inclination angle. The diameter of the big end of the inner hole of the transition turning part 12 is 2.5mm, and the diameter of the small end of the inner hole of the transition turning part 12 is 2 mm.

Referring further to fig. 3, 5 and 7, the inner cutting tube 2 includes an inner connecting portion 21 disposed inside the outer connecting portion 11 and threadedly connected to the outer connecting portion 11 and a flexible knife tube 22 disposed at an end of the inner connecting portion 21 near the direction changing portion 12 and adapted to cut a vertebral body of the spine inside the outer cutting tube 1,

one end of the inner cutting tube 2, which is far away from the flexible blade 221, is provided with a second handle convenient for a doctor to operate inner cutting, and a through hole 61 communicated with the outer cutting tube 1 is arranged in the second handle 6. The utility model discloses a handle on the pipe 2 is surely managed in the doctor's operation of being convenient for to the setting has improved the utility model discloses a convenience to through the through-hole 61 that sets up in second handle 6 and communicate with the pipe 1 is surely managed outward, the medical personnel of being convenient for take out the biopsy sample from the pipe 2 is surely managed in. The flexible knife tube 22 is provided with four groups of separating grooves 3 which are distributed along the axial direction of the flexible knife tube 22, the flexible knife tube 22 is divided into four groups of flexible blades 221 by the separating grooves 3, the thickness of each flexible blade 221 is 0.3mm, and the flexible blades 221 are made of medical stainless steel. The utility model discloses an adopt the material to be the flexible blade 221 of medical stainless steel, satisfy the clean standard of operation, prevent the utility model discloses cause the infection to patient's health in the use. The flexible blade 221 is gradually folded under the force of the direction changing part 12, and the folding position of the flexible blade 221 and the outer end face of the direction changing part 12 are located on the same plane, so that the flexible blade 221 can cut off vertebral bodies in the inner cavity of the external cutting tube 1 as much as possible, and the residual vertebral bodies in the inner cavity of the external cutting tube 1 are reduced.

Further referring to fig. 7 and 8, the bottom of flexible blade 221 is equipped with interior cutting teeth 4 that is used for excising the backbone centrum, and interior cutting teeth 4's orientation is the same with interior tangent pipe 2's direction of rotation, the utility model discloses a setting interior cutting teeth 4's orientation is the same with interior tangent pipe 2 direction of rotation, has reduced interior cutting teeth 4 at the in-process of excising the backbone centrum its and the friction of backbone centrum, has reduced interior cutting teeth 4's wearing and tearing volume, makes the used repeatedly that interior cutting pipe 2 can be many times, has improved interior cutting teeth 4's cutting efficiency. Simultaneously interior cutting teeth 4 sets up at 2 bottoms of inner cutting pipe and be radial evenly distributed, the utility model discloses a set up at 2 bottoms of inner cutting pipe and be radial evenly distributed's drilling tooth and further improved the cutting efficiency of cutting teeth.

The utility model discloses the rotatory circumscribed pipe 1 of well doctor carries out the drilling and makes the circumscribed manage 1 go deep into the backbone centrum inside the spine centrum through the external cutting tooth 13 that sets up on circumscribed pipe 1, and part backbone centrum then enters into the hole of outer connecting portion 11 through diversion portion 12 inner chambers. Subsequently, the surgeon inserts the inner cutting tube 2 into the outer cutting tube 1, and rotates the inner cutting tube 2 to gradually bring the inner cutting tube 2 and the flexible knife tube 22 closer to the direction changing portion 12. Set up when the flexible blade 221 on the inner cutting tube 2 is through diversion portion 12, because the inner wall of diversion portion 12 is certain inclination with the inner wall of outer connecting portion 11, consequently the excellent flexible blade 221 of elasticity performance then can draw close gradually under the squeezing action of diversion portion 12 inner wall, at the in-process that draws close of flexible blade 221, the spine centrum is then cut gradually to interior cutting teeth 4 that sets up on flexible blade 221, closes up and cuts off the spine centrum at last until flexible blade 221, the utility model discloses the spine centrum in the outer cutting tube 1 is amputated completely, after the excision was accomplished and was taken out the sample in inner cutting tube 2 and the inner cutting tube 2, medical personnel inserted PVP syringe 8 in the outer cutting tube and filled centrum space position.

The utility model discloses flexible blade 221 draws close gradually through the squeezing action of the 12 inner walls of diversion portion of extra-corporeal tube 1 in the middle rotary propulsion internal cutting pipe 2, carry out cutting of root to the backbone centrum in the extra-corporeal tube 1, completely break, it leads to the tissue to be unable to take out to avoid backbone centrum tissue to take out the interior backbone basilar part of biopsy ware siphunculus from breaking the difficulty, the biopsy failure takes place, it carries out detection observation such as biopsy to be convenient for the doctor to take out more pathological tissues, and the operation is thus simple, and operation efficiency and tissue excision success rate have been improved, simultaneously can be as many as possible cut the backbone centrum in the 1 inner chamber of extra-corporeal tube, it remains to reduce the backbone centrum in the 1 inner chamber of extra-corporeal. Simultaneously because the utility model discloses a scale 7 of setting at 1 outer wall of circumcision pipe and 2 outer walls of inscribe pipe, the doctor of being convenient for masters the depth of cut of circumcision pipe 1 and inscribe pipe 2 at any time, has improved the utility model discloses an operation accuracy nature and controllability to through the threaded connection of circumcision pipe and inscribe pipe, make the doctor can get into accurate control at the operation in-process to the depth of insertion of inscribe pipe, realized operation security and fine setting controllability, it is convenient to implement pathological diagnosis for backbone centrum tissue sample sampling.

It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel spine vertebral body tissue biopsy device is characterized by comprising an external cutting tube (1), an internal cutting tube (2) which is arranged in the external cutting tube (1) and is in threaded connection with the external cutting tube (1), and a PVP injector (8) which is detachably connected with the external cutting tube (1);

the external cutting pipe (1) comprises an external connecting part (11), a turning part (12) arranged at the bottom end of the external connecting part (11) and external cutting teeth (13) arranged at the bottom end of the external connecting part (11), the diameter of an inner hole of the turning part (12) is gradually reduced along the cutting feed direction of the external cutting pipe (1),

interior tangent tube (2) including set up in outer connecting portion (11) and with inner connecting portion (21) of outer connecting portion (11) threaded connection, set up flexible sword pipe (22) in inner connecting portion (21) bottom, be equipped with separating groove (3) that the multiunit distributes along flexible sword pipe (22) axial on flexible sword pipe (22), separating groove (3) are split into multiunit flexible blade (221) with flexible sword pipe (22), flexible blade (221) bottom is equipped with interior cutting tooth (4), flexible blade (221) fold gradually and separate absolutely to centrum tissue basal portion in tangent tube (2) under the forcing of diversion portion (12), just the position of folding of flexible blade (221) is located same plane with the outer terminal surface of diversion portion (12).

2. A novel spinal vertebral body tissue biopsy device according to claim 1, characterized in that the orientation of the external cutting teeth (13) and the internal cutting teeth (4) is the same as the direction of rotation of the external tangent tube (1) and the internal tangent tube (2), respectively.

3. A novel spinal vertebral body tissue biopsy device according to claim 1, characterized in that the end of the external cutting tube (1) away from the external cutting teeth (13) is provided with a first handle (5).

4. The novel spinal vertebral body tissue biopsy device according to claim 1, characterized in that the external cutting teeth (13) are arranged at the bottom end of the external cutting tube (1) and are radially and uniformly distributed, and the internal cutting teeth (4) are arranged at the bottom end of the internal cutting tube (2) and are also radially and uniformly distributed.

5. The novel spine vertebral body tissue biopsy device according to claim 1, characterized in that a second handle (6) is arranged on the inner cutting tube (2), and a through hole (61) communicated with the outer cutting tube (1) is arranged in the second handle (6).

6. The novel spinal vertebral tissue biopsy device according to claim 1, wherein the thickness of the flexible blade (221) is 0.3mm to 0.4mm, and the material adopted by the flexible blade (221) is medical stainless steel.

7. The novel spinal vertebral body tissue biopsy device according to claim 1, wherein the diameter of the large end of the inner hole of the direction changing portion (12) is 2.5mm to 3mm, and the diameter of the small end of the inner hole of the direction changing portion (12) is 1.5mm to 2.5 mm.

8. The novel spine vertebral body tissue biopsy device according to claim 1, characterized in that the outer wall of the external cutting tube (1) and the outer wall of the internal cutting tube (2) are provided with graduations (7).