suction biopsy needle
阅读说明:本技术 一种抽吸活检针 (suction biopsy needle ) 是由 李时悦 黄景川 于 2018-07-20 设计创作,主要内容包括:本发明实施例公开了一种抽吸活检针,包括:至少一个空心管状的针头,所述针头包括连接的尖端及延续段;其中,所述尖端设有连通空心管内腔的针孔;外柔性管;以及内柔性管,所述内柔性管穿设于所述外柔性管中,且能相对所述外柔性管沿轴向移动;所述内柔性管与所述针头连接,以带动所述针头伸出所述外柔性管外或收进所述外柔性管内。本发明提供的技术方案,内柔性管可随着外柔性管伸入取样位置处,并可从外柔性管内伸出并通过针头进行取样,针头能够穿刺进气管内或气管壁外的组织中,且创口较小、配合注射器可持续进行采样,方便操作。(The embodiment of the invention discloses suction biopsy needles, which comprise at least hollow tubular needles, wherein each needle comprises a connected tip and a continuous section, each tip is provided with a needle hole communicated with the inner cavity of a hollow tube, an outer flexible tube and an inner flexible tube, each inner flexible tube is arranged in the outer flexible tube in a penetrating mode and can move axially relative to the outer flexible tube, each inner flexible tube is connected with the corresponding needle to drive the corresponding needle to extend out of the outer flexible tube or retract into the outer flexible tube, according to the technical scheme provided by the invention, each inner flexible tube can extend into a sampling position along with the corresponding outer flexible tube and can extend out of the outer flexible tube and sample through the corresponding needle, each needle can penetrate into tissues in the trachea or outside the trachea wall, the wounds are small, sampling can be continuously performed by matching with an injector, and the operation is convenient.)
An aspiration biopsy needle of the type , comprising:
at least hollow tubular needles, wherein each needle comprises a connected tip and a continuous section, and the tip is provided with a needle hole communicated with the inner cavity of the hollow tube;
an outer flexible tube; and
the inner flexible pipe penetrates through the outer flexible pipe and can move axially relative to the outer flexible pipe;
the inner flexible tube is connected with the needle head to drive the needle head to extend out of the outer flexible tube or retract into the outer flexible tube.
2. The aspiration biopsy needle of claim 1,
the tip is in a conical shape, a wedge shape or a pyramid shape;
the continuation segment includes or a combination of any number of the straight and curved segments.
3. The aspiration biopsy needle of of claim 1 or 2, wherein the needle has an outer diameter of 0.3-1.2 mm;
the needle head is made by heat treatment of a hollow nickel-titanium alloy tube or a stainless steel tube.
4. The aspiration biopsy needle of of claims 1 or 2, wherein the needles are deployed in different directions after protruding outside the outer flexible tube when the number of needles is greater than .
5. The aspiration biopsy needle of , wherein the end of the outer flexible tube that extends or retracts into the needle is provided with a guide head for guiding the direction of movement of the needle.
6. The aspiration biopsy needle of claim 5, wherein the shape of the guide head comprises of conical, wedge, pyramid, and spherical;
the guide head is provided with openings, and the number of the openings is or is equal to the number of the needles.
7. The aspiration biopsy needle of claim 5, wherein the guide tip is made using or more materials selected from stainless steel, platinum iridium alloy, gold, titanium, and titanium alloy.
8. The aspiration biopsy needle of in claim 1 or 2, wherein the inner flexible tube and/or the outer flexible tube is an extruded tube made of or more materials selected from PTFE, PP, PE, and PA, or
The inner flexible pipe and/or the outer flexible pipe are multi-layer pipes, are provided with reticular metal woven layers or threaded steel wire reinforced layers, and are co-extruded pipes made of materials of polytetrafluoroethylene, polypropylene, polyethylene and polyamide or a plurality of materials.
9. The aspiration biopsy needle of , wherein the needle further comprises an axial displacement assembly for driving the relative movement of the inner flexible tube and the outer flexible tube, and an insert with a luer;
said insert is connected to said axial displacement assembly end opening;
the end of the inner flexible tube distal to the needle extends into the axial displacement assembly from the other end of the axial displacement assembly to be fixedly connected with the insert and communicates with the luer through the insert.
10. The aspiration biopsy needle of claim 9, wherein a stiffener is disposed through the inner flexible tube;
the end of the stiffening element is connected to the needle and the other end is connected to the luer and/or the insert.
11. The aspiration biopsy needle of claim 10, wherein the reinforcement comprises or a combination thereof of stainless steel wire, stainless steel wire rope, hollow stainless steel tube, and hollow plastic tube.
12. The aspiration biopsy needle of claim 9, wherein the axial displacement assembly comprises a handle;
the end of the handle far away from the inner insert is provided with a through hole with the diameter matched with that of the inner flexible pipe, and the inner flexible pipe part extends into the interior of the handle from the through hole and is connected with the inner insert;
the outer flexible tube is positioned outside the handle, and when the handle drives the inner flexible tube to move relative to the outer flexible tube, the end of the handle with the through hole can limit the maximum extending distance of the needle.
13. The aspiration biopsy needle of claim 9, wherein the axial displacement assembly comprises a handle;
the end of the handle far away from the inner insert is provided with a through hole with a diameter matched with the diameter of the outer flexible pipe, the outer flexible pipe part extends into the interior of the handle from the through hole, and the inner flexible pipe part extends out of the outer flexible pipe and is connected with the inner insert;
the end of the inner insert remote from the luer is provided with a stop by which the maximum distance the needle can extend when the handle moves the inner flexible tube relative to the outer flexible tube is limited.
14. The aspiration biopsy needle of claim 9, wherein the axial displacement assembly comprises a handle and a mount;
the fixing piece is arranged at the end of the handle far away from the inner insert, a through hole with the diameter matched with that of the outer flexible pipe is arranged on the fixing piece, and the outer flexible pipe extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
said inner flexible tube portion extending from said outer flexible tube to connect with said inner insert;
the inner plug part is sleeved in the handle, and a stop block is arranged on the periphery of the inner plug close to the end of the luer;
when the handle moves axially relative to the inner insert, the handle drives the outer flexible tube to move, and the stop can limit the maximum extending distance of the needle.
15. The aspiration biopsy needle of claim 9, wherein the axial displacement assembly comprises a handle, a mount, and a threaded block;
the fixing piece is rotatably connected with the end of the handle far away from the inner insert, the fixing piece part extends into the handle and is in threaded connection with the thread block arranged inside the handle, through holes which are communicated with each other and have a diameter matched with that of the outer flexible pipe are arranged on the fixing piece and the thread block, and the outer flexible pipe part extends into the fixing piece and the thread block from the through holes and is fixedly connected with the thread block;
the thread block is provided with a limiting column, a limiting groove extending along the axis of the handle is arranged at a corresponding position in the handle, and the limiting column can slide along the extending direction of the limiting groove and limit the circumferential rotation of the thread block;
said inner flexible tube portion extending from said outer flexible tube to connect with said inner insert;
the inner plug part is sleeved in the handle and fixedly connected with the thread block, and a stop block is arranged on the periphery of the inner plug close to the end of the luer;
the rotation of the fixing piece can drive the screw block to move along the axis of the handle, the screw block drives the inner insert to move relative to the handle so as to drive the inner flexible pipe to move relative to the outer flexible pipe, and the maximum extending distance of the needle head can be limited through the stop block.
16. The aspiration biopsy needle of in any one of claims 1 or 2, further comprising an axial displacement assembly and a luer for driving the inner flexible tube and the outer flexible tube relative to each other;
a fixing piece is arranged at the end of the axial displacement assembly, a through hole with the diameter matched with that of the outer flexible pipe is arranged on the fixing piece, and the outer flexible pipe extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
the inner flexible tube portion extends from the outer flexible tube and is connected to the luer through the axial displacement assembly.
17. The aspiration biopsy needle of claim 16, wherein the axial displacement assembly comprises a handle and a push key;
the fixing piece is arranged at the end of the handle, and the inner flexible pipe passes through the handle to be connected with the luer;
the handle is provided with a sliding groove extending along the axis of the handle, the push key part extends into the handle from the sliding groove and is fixedly connected with the inner flexible pipe, the push key can slide along the extending direction of the sliding groove, and the sliding groove limits the push key to rotate in the circumferential direction;
when the push key slides along the extending direction of the sliding groove, the inner flexible pipe is driven to move relative to the outer flexible pipe, and the maximum extending distance of the needle head can be limited through the luer.
18. The aspiration biopsy needle of claim 16, wherein a stiffener is disposed through the inner flexible tube;
the end of the reinforcing element is connected with the needle, and the other end is connected with the luer.
19. The aspiration biopsy needle of claim 16, wherein the axial displacement assembly comprises a handle, an adjustment member, and a threaded block;
the fixing piece is arranged at the end of the handle, and the inner flexible pipe passes through the handle to be connected with the luer;
the adjusting piece is rotatably connected with the end of the handle far away from the fixing piece, part of the adjusting piece extends into the handle and is in threaded connection with the thread block arranged inside the handle, and the inner flexible pipe is fixedly connected with the thread block;
the thread block is provided with a limiting column, a limiting groove extending along the axis of the handle is arranged at a corresponding position in the handle, and the limiting column can slide along the extending direction of the limiting groove and limit the circumferential rotation of the thread block;
and rotating the adjusting piece to drive the thread block to move along the axis of the handle, so that the maximum extending distance of the needle can be limited through the luer when the thread block drives the inner flexible pipe to move relative to the outer flexible pipe.
20. The aspiration biopsy needle of claim 19, further comprising a support tube and a slider;
the fixing piece is arranged at the end of the handle and partially extends into the handle to form a limiting part, a through hole with the diameter matched with that of the supporting pipe is arranged on the fixing piece, and the supporting pipe partially extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
the sliding block is arranged in the handle and positioned between the fixing piece and the thread block, a through hole with the diameter matched with that of the outer flexible pipe is formed in the sliding block piece, and the outer flexible pipe extends into the sliding block from the through hole and is fixedly connected with the sliding block;
a bayonet is arranged on the sliding block, and an elastic buckle is arranged at the corresponding position of the thread block;
when the adjusting piece is rotated to drive the thread block to move towards the direction close to the supporting tube along the handle axial direction, the thread block is abutted against the end face of the bayonet through the elastic buckle to push the sliding block to move, meanwhile, the thread block drives the inner flexible tube to move, and the outer flexible tube and the inner flexible tube simultaneously extend out of the supporting tube;
when the sliding block abuts against the limiting part, the elastic buckle penetrates through the bayonet, the thread block drives the inner flexible pipe to move, and the inner flexible pipe extends out of the outer flexible pipe.
Technical Field
The invention belongs to the technical field of medical examination, and particularly relates to suction biopsy needles.
Background
With the increasing incidence of tumors and the decreasing age of the tumors in recent years, there are increasing demands for early detection, diagnosis and subsequent treatment of tumors, and biopsy is a main way to obtain pathological tissue samples for diagnosis.
Biopsy tools currently offered on the market are divided into long straight needle biopsy tools and flexible tube biopsy tools. When in use, the long straight needle-shaped biopsy tool needs to reach the focus position through percutaneous puncture, and a patient suffers great physical and psychological pain and is easy to cause complications such as pneumothorax and the like. And a puncture path needs to be planned in advance to avoid important organs, large blood vessels and the like before puncture operation, so that the time consumption is long, and the requirements on skills and experience of operating doctors are high.
Various flexible pipe class biopsy tools on the existing market, the sampling structure of front end is mostly the pappus brush, cuts sawtooth, pincers class, is difficult to walk and fix a position in the route of lung many times crooked when the cooperation bronchoscope uses. When the flexible tube biopsy tool samples lumen tissues such as bronchus, the lumen tissues outside the lumen are difficult to penetrate through the tracheal wall to sample, and the problems of large wound, small sampling amount, easy loss of samples and the like are easily caused. In addition, when the existing tube biopsy tools in the market are used for focuses of different sizes, biopsy tools with proper specifications need to be selected, and the difficulty of biopsy sampling is increased.
Disclosure of Invention
In view of the above, the present invention provides aspiration biopsy needles, in which an inner flexible tube can be extended into a sampling position through an outer flexible tube, the inner flexible tube can be extended from the outer flexible tube and can be used for sampling through a needle, the needle can be inserted into a tissue inside or outside a trachea wall, and the aspiration biopsy needle has a small wound, can be used with a syringe to continuously sample, and is convenient to operate.
To solve the technical problems in the prior art, an embodiment of the present invention provides aspiration biopsy needles, including:
at least hollow tubular needles, wherein each needle comprises a connected tip and a continuous section, and the tip is provided with a needle hole communicated with the inner cavity of the hollow tube;
an outer flexible tube; and
the inner flexible pipe penetrates through the outer flexible pipe and can move axially relative to the outer flexible pipe;
the inner flexible tube is connected with the needle head to drive the needle head to extend out of the outer flexible tube or retract into the outer flexible tube.
Optionally, the tip is shaped as a cone, a wedge, or a pyramid;
the continuous section comprises or any combination of a straight section, a circular section, a semi-elliptical section, a semi-circular section and a curved section.
Optionally, the outer diameter of the needle is 0.3-1.2 mm;
the needle head is made by heat treatment of a hollow nickel-titanium alloy tube or a stainless steel tube.
Optionally, when the number of the needles is larger than , all the needles extend out of the outer flexible tube and are unfolded along different directions.
Optionally, the end of the outer flexible tube that extends or retracts into the needle is provided with a guide head for guiding the direction of movement of the needle.
Optionally, the shape of the seeker comprises of conical, wedge-shaped, pyramid-shaped and spherical;
the guide head is provided with openings, and the number of the openings is or is equal to the number of the needles.
Optionally, the guide head is made of or more of stainless steel, platinum iridium alloy, gold, titanium and titanium alloy.
Optionally, the inner flexible tube and/or the outer flexible tube is an extruded tube made of or more materials selected from polytetrafluoroethylene, polypropylene, polyethylene, polyamide, or
The inner flexible pipe and/or the outer flexible pipe are multi-layer pipes, are provided with reticular metal braided layers or spiral steel wire reinforced layers, and are co-extruded pipes made of materials of polytetrafluoroethylene, polypropylene, polyethylene and polyamide or a plurality of materials.
Optionally, the device further comprises an axial displacement assembly for driving the inner flexible pipe and the outer flexible pipe to move relatively, and an inner insert with a luer;
said insert is connected to said axial displacement assembly end opening;
the end of the inner flexible tube distal to the needle extends into the axial displacement assembly from the other end of the axial displacement assembly to be fixedly connected with the insert and communicates with the luer through the insert.
Optionally, a reinforcing member is arranged in the inner flexible pipe in a penetrating manner;
the end of the stiffening element is connected to the needle and the other end is connected to the luer and or the insert.
Optionally, the reinforcement comprises of stainless steel wire, stainless steel wire rope, hollow stainless steel pipe and hollow plastic pipe or their combination.
Optionally, the axial displacement assembly comprises a handle;
the end of the handle far away from the inner insert is provided with a through hole with the diameter matched with that of the inner flexible pipe, and the inner flexible pipe part extends into the interior of the handle from the through hole and is connected with the inner insert;
the outer flexible tube is positioned outside the handle, and when the handle drives the inner flexible tube to move relative to the outer flexible tube, the end of the handle with the through hole can limit the maximum extending distance of the needle.
Optionally, the axial displacement assembly comprises a handle;
the end of the handle far away from the inner insert is provided with a through hole with a diameter matched with the diameter of the outer flexible pipe, the outer flexible pipe part extends into the interior of the handle from the through hole, and the inner flexible pipe part extends out of the outer flexible pipe and is connected with the inner insert;
the end of the inner insert remote from the luer is provided with a stop by which the maximum distance the needle can extend when the handle moves the inner flexible tube relative to the outer flexible tube is limited.
Optionally, the axial displacement assembly comprises a handle and a fixture;
the fixing piece is arranged at the end of the handle far away from the inner insert, a through hole with the diameter matched with that of the outer flexible pipe is arranged on the fixing piece, and the outer flexible pipe extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
said inner flexible tube portion extending from said outer flexible tube to connect with said inner insert;
the inner plug part is sleeved in the handle, and a stop block is arranged on the periphery of the inner plug close to the end of the luer;
when the handle moves axially relative to the inner insert, the handle drives the outer flexible tube to move, and the stop can limit the maximum extending distance of the needle.
Optionally, the axial displacement assembly comprises a handle, a fixing member and a threaded block;
the fixing piece is rotatably connected with the end of the handle far away from the inner insert, the fixing piece part extends into the handle and is in threaded connection with the thread block arranged inside the handle, through holes which are communicated with each other and have a diameter matched with that of the outer flexible pipe are arranged on the fixing piece and the thread block, and the outer flexible pipe part extends into the fixing piece and the thread block from the through holes and is fixedly connected with the thread block;
the thread block is provided with a limiting column, a limiting groove extending along the axis of the handle is arranged at a corresponding position in the handle, and the limiting column can slide along the extending direction of the limiting groove and limit the circumferential rotation of the thread block;
said inner flexible tube portion extending from said outer flexible tube to connect with said inner insert;
the inner plug part is sleeved in the handle and fixedly connected with the thread block, and a stop block is arranged on the periphery of the inner plug close to the end of the luer;
the rotation of the fixing piece can drive the screw block to move along the axis of the handle, the screw block drives the inner insert to move relative to the handle so as to drive the inner flexible pipe to move relative to the outer flexible pipe, and the maximum extending distance of the needle head can be limited through the stop block.
Optionally, the device further comprises an axial displacement assembly and a luer for driving the inner flexible tube and the outer flexible tube to move relatively;
a fixing piece is arranged at the end of the axial displacement assembly, a through hole with the diameter matched with that of the outer flexible pipe is arranged on the fixing piece, and the outer flexible pipe extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
the inner flexible tube portion extends from the outer flexible tube and is connected to the luer through the axial displacement assembly.
Optionally, the axial displacement assembly comprises a handle and a push key;
the fixing piece is arranged at the end of the handle, and the inner flexible pipe passes through the handle to be connected with the luer;
the handle is provided with a sliding groove extending along the axis of the handle, the push key part extends into the handle from the sliding groove and is fixedly connected with the inner flexible pipe, the push key can slide along the extending direction of the sliding groove, and the sliding groove limits the push key to rotate in the circumferential direction;
when the push key slides along the extending direction of the sliding groove, the inner flexible pipe is driven to move relative to the outer flexible pipe, and the maximum extending distance of the needle head can be limited through the luer.
Optionally, a reinforcing member is arranged in the inner flexible pipe in a penetrating manner;
the end of the reinforcing element is connected with the needle, and the other end is connected with the luer.
Optionally, the axial displacement assembly comprises a handle, an adjustment member and a threaded block;
the fixing piece is arranged at the end of the handle, and the inner flexible pipe passes through the handle to be connected with the luer;
the adjusting piece is rotatably connected with the end of the handle far away from the fixing piece, part of the adjusting piece extends into the handle and is in threaded connection with the thread block arranged inside the handle, and the inner flexible pipe is fixedly connected with the thread block;
the thread block is provided with a limiting column, a limiting groove extending along the axis of the handle is arranged at a corresponding position in the handle, and the limiting column can slide along the extending direction of the limiting groove and limit the circumferential rotation of the thread block;
and rotating the adjusting piece to drive the thread block to move along the axis of the handle, so that the maximum extending distance of the needle can be limited through the luer when the thread block drives the inner flexible pipe to move relative to the outer flexible pipe.
In addition, optionally, the device further comprises a supporting tube and a sliding block;
the fixing piece is arranged at the end of the handle and partially extends into the handle to form a limiting part, a through hole with the diameter matched with that of the supporting pipe is arranged on the fixing piece, and the supporting pipe partially extends into the fixing piece from the through hole and is fixedly connected with the fixing piece;
the sliding block is arranged in the handle and positioned between the fixing piece and the thread block, a through hole with the diameter matched with that of the outer flexible pipe is formed in the sliding block piece, and the outer flexible pipe extends into the sliding block from the through hole and is fixedly connected with the sliding block;
a bayonet is arranged on the sliding block, and an elastic buckle is arranged at the corresponding position of the thread block;
when the adjusting piece is rotated to drive the thread block to move towards the direction close to the supporting tube along the handle axial direction, the thread block is abutted against the end face of the bayonet through the elastic buckle to push the sliding block to move, meanwhile, the thread block drives the inner flexible tube to move, and the outer flexible tube and the inner flexible tube simultaneously extend out of the supporting tube;
when the sliding block abuts against the limiting part, the elastic buckle penetrates through the bayonet, the thread block drives the inner flexible pipe to move, and the inner flexible pipe extends out of the outer flexible pipe.
The technical scheme provided by the embodiment of the invention is suitable for sampling lesions in and near the bronchial wall, for example, the outer flexible tube can extend into the bronchial tube through a bronchoscope forceps channel or a tracheal interventional catheter, the inner flexible tube can extend into a sampling position along with the outer flexible tube, can extend out of the outer flexible tube and can be used for sampling through the needle head, the needle head can be punctured into tissues in or out of the tracheal wall, the wound is small, the sampling can be continuously carried out by matching with an injector, samples obtained by pumping are safely stored in the tube and the injector, the operation is convenient, and the analysis and the inspection of the pathology in step are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, is briefly introduced in the drawings required in the description of the embodiments or the prior art, it is obvious that the drawings in the following description are embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and constitute a part of embodiments of the invention, are provided to illustrate embodiments of the invention and are not to be construed as limitations of the embodiments of the invention.
In the drawings:
FIG. 1 is a schematic view of an embodiment of an aspiration biopsy needle according to the present invention with the needle extending out of the outer flexible tube;
FIG. 2 is a schematic view of the needle of the biopsy aspiration needle of the present embodiment of the invention in a retracted position within the outer flexible tube;
FIGS. 3a, 3c, 3e are schematic views of differently shaped tips, respectively, of a needle tip in accordance with embodiments of the present invention;
FIGS. 3b, 3d, and 3f are cross-sectional views of the tip shown in FIGS. 3a, 3c, and 3e, respectively;
FIGS. 4a-4e are schematic views of needles of different shapes according to embodiments of the present invention;
fig. 5a, 5c, 5e, 5g are schematic views of guiding heads with different shapes according to embodiments of the present invention;
FIGS. 5b, 5d, 5f, 5h are cross-sectional views of the guide diagrams shown in FIGS. 5a, 5c, 5e, 5g, respectively;
FIG. 6a is a schematic view of a needle of the embodiment of the present invention extended from the introducer shown in FIG. 5 a;
FIG. 6b is an enlarged schematic view at A in FIG. 6 a;
FIG. 6c is a schematic view of a needle of the embodiment of the present invention extended from the introducer shown in FIG. 5 c;
FIG. 6d is an enlarged schematic view at B in FIG. 6 c;
FIGS. 7a, 8a, 9a, 10a are schematic cross-sectional views of different forms of aspiration biopsy needles with an insert, according to embodiments of the present invention, with the needle retracted into the outer flexible tube;
FIGS. 7b, 8b, 9b and 10b are schematic sectional views of the needle of FIGS. 7a, 8a, 9a and 10a, respectively, extended out of the outer flexible tube;
FIG. 11 is a schematic view of an aspiration biopsy needle with an insert omitted according to an embodiment of the present invention; (ii) a
FIG. 12a is a schematic sectional view of a biopsy needle with push button according to an embodiment of the present invention, with the needle retracted into the outer flexible tube;
FIG. 12b is a schematic cross-sectional view of the needle of FIG. 12a extended out of the outer flexible tube;
FIG. 13 is a cross-sectional view of an aspiration biopsy needle with an adjustment member according to an embodiment of the present invention, with the needle extending out of the outer flexible tube;
FIG. 14a is a cross-sectional view of an aspiration biopsy needle with a support tube according to an embodiment of the present invention, with the needle retracted into the outer flexible tube;
FIG. 14b is a schematic cross-sectional view of FIG. 14 a;
FIG. 14c is a cross-sectional view of an aspiration biopsy needle with a support tube according to an embodiment of the present invention, with the needle extending through the outer flexible tube;
fig. 14d is a schematic cross-sectional view of fig. 14 c.
Description of the reference numerals
10: a needle head; 11: a tip; 12: a continuation section; 13: a pinhole;
20: an outer flexible tube; 21: a seeker; 22: an opening;
30: an inner flexible tube; 31: a reinforcement;
40: an axial displacement assembly; 41: a handle; 42: limiting ribs;
50: a luer;
60: an interposer; 61: a stopper; 62: a limiting bulge;
70: a fixing member;
80: a thread block; 81: a limiting column; 82: elastic buckles;
90: pushing a key;
100: an adjustment member;
110: supporting a tube;
120: a slider; 121: and (4) a bayonet.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
In carrying out the present invention, the inventors have found that biopsy tools currently provided on the market are classified into a long straight needle-shaped biopsy tool and a flexible tube-type biopsy tool. When in use, the long straight needle-shaped biopsy tool needs to reach the focus position through percutaneous puncture, and a patient suffers great physical and psychological pain and is easy to cause complications such as pneumothorax and the like. Flexible pipe class biopsy instrument, the sample structure of front end is mostly the pappus brush, cuts sawtooth, pincers class, is difficult to walk and fix a position in the route of lung many times crooked when the cooperation bronchoscope uses. When the flexible tube biopsy tool samples lumen tissues such as bronchus, the lumen tissues outside the lumen are difficult to penetrate through the tracheal wall to sample, and the problems of large wound, small sampling amount, easy loss of samples and the like are easily caused. In addition, when the existing tube biopsy tools in the market are used for focuses of different sizes, biopsy tools with proper specifications need to be selected, and the difficulty of biopsy sampling is increased.
Therefore, to overcome the defects in the prior art, the present invention provides aspiration biopsy needles, in which an inner flexible tube can be extended into a sampling position through an outer flexible tube, the inner flexible tube can be extended from the outer flexible tube and can be used for sampling through a needle, the needle can pierce through the wall of an air inlet tube, the wound is small, sampling can be continuously performed by matching with a syringe, and the operation is convenient.
Embodiments of the present invention will be described in detail with reference to the drawings and embodiments, so that the implementation of the embodiments of the present invention that apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented, and the structure of the embodiments of the present invention is further described in with reference to the drawings.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the embodiments of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the terms are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and be operated, so that the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the embodiments of the present invention, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic view showing a state in which a needle head of an aspiration biopsy needle according to an embodiment of the present invention is extended out of an outer flexible tube, and fig. 2 is a schematic view showing a state in which the needle head of the aspiration biopsy needle according to an embodiment of the present invention is retracted into the outer flexible tube, as shown in fig. 1 and 2, and an embodiment of the present invention provides types of aspiration biopsy needles, including at least hollow tubular needle heads 10, an outer
The technical scheme provided by the embodiment of the invention is suitable for sampling lesions in and near the bronchial wall, for example, the outer
The aspiration biopsy needle provided by embodiments of the present invention is described in further detail at step .
In embodiments of the invention, the
Referring to fig. 4a to 4e, the
In order to be suitable for sampling target lesions at different positions, in the embodiment of the invention, when the number of the
, in order to make the outer
In using an aspiration biopsy needle for sampling, the tissue can be first penetrated through the
In embodiments of the present invention, inner
In one embodiment of the present invention, to facilitate user manipulation of the aspiration biopsy needle, steps are provided, referring to fig. 1, 2 and 7a, the aspiration biopsy needle further comprises an
to enhance the flexibility and movement of the inner
Several different implementations of an aspiration biopsy needle with an
it will be appreciated that, with reference to figures 7a and 7b, the
The procedure is as follows, the user extends the outer
A second achievable mode is understood to be an improvement over the mode that can be achieved at . and second achievable modes are where the
See for a difference in use, when the outer
In a third way, referring to fig. 9a and 9b, the
The procedure is as follows, the user extends the outer
In the third and fourth implementations, the
The procedure can be seen in a third implementation, except that the inner
In the above embodiment, the inner
in the embodiment of the present invention, referring to fig. 11, the aspiration biopsy needle further comprises an
Several different implementations of an aspiration biopsy needle provided by embodiments of the present invention, with the
, referring to FIGS. 12a and 12b, the
The user may advance the
A second way to achieve this is, referring to fig. 13, that the
The user extends the outer
On the basis of the second implementation manner, referring to fig. 14a to 14d, the
The sliding
when the adjusting
The difference in the using process can be seen in the second implementation manner, in which the adjusting
In the embodiment of the present invention, the supporting
The relevant contents in the above embodiments can be mutually referred to, and can also be combined with each other to form various forms of aspiration biopsy needles, which are not described in again.
In summary, the technical solution provided by the embodiments of the present invention is suitable for sampling the lesions in and near the bronchial wall, for example, the outer
It should be noted that, although the detailed description of the embodiments of the present invention is provided in conjunction with the drawings, the present invention should not be construed as limiting the scope of the embodiments of the present invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
The examples of the embodiments of the present invention are intended to briefly describe the technical features of the embodiments of the present invention, so that those skilled in the art can intuitively understand the technical features of the embodiments of the present invention, and the embodiments of the present invention are not unduly limited.
The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the embodiments are not limited to the forms disclosed herein, but are not to be construed as excluding other embodiments and may be utilized in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.
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