CN218572268U - Puncture tool - Google Patents

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a puncture instrument is related to. The piercing tool, comprising: a plurality of puncture needle cores and a puncture sheath needle are guided; the puncture sheath needle is arranged in a hollow manner to form a channel in the guide puncture sheath needle, a connecting piece is arranged at the first end of the guide puncture sheath needle, and a fitting piece is arranged at the first end of each puncture needle core; the second end of the puncture needle core can penetrate into the channel from the first end of the guide puncture sheath needle to extend out from the second end of the guide puncture sheath needle; the connecting piece is detachably connected with the matching piece; at least some of the lancet cores have different structures. The utility model provides a puncture instrument realizes the pjncture needle video picture in the magnetic resonance guide puncture art through the replacement of different material nooks, effectively improves puncture process accuracy and puncture precision.

Description

Puncture tool

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a puncture instrument is related to.

Background

The minimally invasive interventional diagnosis and treatment technology under the guidance of magnetic resonance is a relatively new image-guided interventional diagnosis and treatment technology, and is a process of accurately placing a puncture biopsy or a treatment instrument into a focus through the guidance of a puncture needle for corresponding diagnosis and treatment under the positioning and guidance of a magnetic resonance imaging technology. It has many advantages, such as: the guiding image has high soft tissue resolution, can perform multi-azimuth and multi-angle imaging on pathological changes and intraoperative paths, can display focuses which cannot be displayed by other imaging modes (such as CT, ultrasound, DSA and the like), performs functional imaging on suspicious focuses to improve the positive rate of puncture specimens and the treatment effect of target areas, performs temperature imaging monitoring in the tumor ablation treatment process to display the treatment effect in real time, and the like. Therefore, the clinical diagnosis and treatment work at present has more and more urgent needs on the minimally invasive interventional diagnosis and treatment technology under the guidance of magnetic resonance. The magnetic resonance guided puncture technology is the basis for the development of many interventional medical procedures. For example: the magnetic resonance guided puncture biopsy of brain, lung, liver and other parenchymal organ lesions, the implantation of magnetic resonance guided solid malignant tumor radioactive particles, the magnetic resonance guided tumor ablation treatment and the like can be completed under the guidance of a magnetic resonance puncture instrument.

The imaging accuracy of the puncture needle can directly influence the magnetic resonance imaging effect and the puncture precision, and then the success or failure of the whole diagnosis and treatment process is determined. The magnetic resonance guide puncture needle in the market at present generally comprises a hollow guide puncture sheath needle and a matched needle core which passes through the guide puncture sheath needle, and has the problems that different parts of a human body have different structures, the same part has different puncture requirements under different conditions, the existing needle core is suitable for puncture of few parts or certain puncture requirements, but blind puncture can be caused when the needle core is used for other unsuitable parts or cannot meet the puncture requirements, and the accuracy of the puncture process is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a puncture instrument to solve the technical problem that the puncture process accuracy that exists is low among the prior art to a certain extent.

The utility model provides a puncture tool, include: a plurality of puncture needle cores and a puncture sheath needle are guided; the puncture sheath needle is arranged in a hollow manner so as to form a channel in the guide puncture sheath needle, a connecting piece is arranged at the first end of the guide puncture sheath needle, and a matching piece is arranged at the first end of each puncture needle core; the second end of the puncture needle core can penetrate into the channel from the first end of the guide puncture sheath needle to extend out from the second end of the guide puncture sheath needle; the connecting piece is detachably connected with the matching piece; at least a part of the puncture needle cores have different structures.

At least part of the puncture needle cores have different structures, so that the proper structures of the puncture needle cores can be arranged according to different puncture parts or different puncture requirements; the connecting piece is detachably connected with the matching piece, so that the guide puncture sheath needle and the plurality of legend needle cores can be detachably connected; can change different puncture stylet according to different application position or different puncture demands to make current position or current puncture demand, can match suitable puncture stylet, puncture stylet is suitable can realize the clear position relation that shows the pjncture needle and image between normal structure and focus, thereby can avoid the blind and wear, improves the puncture process accuracy, thereby improves magnetic resonance imaging effect and puncture precision.

Further, at least one of the plurality of lancet cores is a mechanical lancet core; the mechanical puncture needle core comprises a mechanical puncture rod part and a mechanical puncture needle head connected with the mechanical puncture rod part, the end part of the mechanical puncture needle head is sharp, and the matching piece is arranged at one end, far away from the mechanical puncture needle head, of the mechanical puncture rod part.

Further, at least one of the plurality of the puncture needle cores is a fat imaging blunt needle core; the blunting needle core for the lipidic imaging comprises a blunting shaft part for the lipidic imaging and a blunting needle head connected with the blunting shaft part for the lipidic imaging, and the end part of the blunting needle head for the lipidic imaging is round; the inside of the lipid imaging blunt rod part and the inside of the lipid imaging blunt needle head are communicated with each other to form a first lipid cavity; the fitting is arranged at one end of the lipid imaging blunt shaft part, which is far away from the lipid imaging blunt needle head.

Furthermore, at least one of the puncture needle cores is a lipid imaging puncture needle core; the lipidic imaging puncture needle core comprises a lipidic imaging puncture rod part and a lipidic imaging puncture needle head connected with the lipidic imaging puncture rod part, and the end part of the lipidic imaging puncture needle head is sharp; the end part of the lipid imaging puncture rod part, which is close to the lipid imaging puncture needle head, is internally provided with a second lipid cavity, and the matching piece is arranged at one end of the lipid imaging puncture rod part, which is far away from the lipid imaging puncture needle head.

Further, at least one of the plurality of the lancet cores is an aqueous imaging blunt lancet core; the aqueous imaging blunt needle core comprises an aqueous imaging blunt shaft part and an aqueous imaging blunt needle head connected with the aqueous imaging blunt shaft part, and the end part of the aqueous imaging blunt needle head is round and blunt; the inside of the water-based imaging blunt rod part and the inside of the water-based imaging blunt needle head are communicated with each other to form a first water-based cavity; the fitting is arranged at one end of the water-based imaging blunt rod part, which is far away from the water-based imaging blunt needle head.

Further, at least one of the plurality of the lancet cores is an aqueous imaging lancet core; the aqueous imaging puncture needle core comprises an aqueous imaging puncture rod part and an aqueous imaging puncture needle head connected with the aqueous imaging puncture rod part, and the end part of the aqueous imaging puncture needle head is sharp; the end part of the water-based imaging puncture rod part, which is close to the water-based imaging puncture needle head, is internally provided with a second water-based cavity, and the matching piece is arranged at one end of the water-based imaging puncture rod part, which is far away from the water-based imaging puncture needle head.

Further, the mechanical puncture needle head, the lipid imaging puncture needle head and the aqueous imaging puncture needle head are all triangular pyramid structures.

Further, the difference between the outer diameter and the inner diameter of the puncture sheath needle is 0.1mm-2.0mm;

and/or the length of the mechanical puncture needle head is 1.5mm-2.5mm, and the outer diameter of the mechanical puncture rod part is smaller than the inner diameter of the guide puncture sheath needle to 0.05mm-0.15mm;

and/or the length of the lipid imaging blunt needle head is 0.5mm-1.5mm, and the outer diameter of the lipid imaging blunt shaft part is smaller than the inner diameter of the guide puncture sheath needle to 0.05mm-0.15mm;

and/or the length of the lipid imaging puncture needle head is 1.5mm-2.5mm, and the outer diameter of the lipid imaging puncture rod part is smaller than the inner diameter of the guide puncture sheath needle to 0.05mm-0.15mm;

and/or the length of the aqueous imaging blunt needle head is 0.5mm-1.5mm, and the outer diameter of the aqueous imaging blunt shaft part is smaller than the inner diameter of the guide puncture sheath needle to 0.05mm-0.15mm;

and/or the length of the aqueous imaging puncture needle head is 1.5mm-2.5mm, and the outer diameter of the aqueous imaging puncture rod part is smaller than the inner diameter of the guide puncture sheath needle to 0.05mm-0.15mm.

Furthermore, the puncture sheath needle is made of titanium alloy;

and/or the mechanical puncture needle core is made of titanium alloy;

and/or the lipid imaging blunt needle core is made of plastic;

and/or the lipidic imaging puncture needle core is made of titanium alloy;

and/or the material of the water-based imaging blunt stylet is plastic;

and/or the aqueous imaging puncture needle core is made of titanium alloy.

Furthermore, the connecting piece is a connecting block, and external threads are arranged on the outer wall of the connecting block; the matching piece is a matching block, an annular groove is formed in the wall, close to the second end of the puncture needle core, of the matching block, and an internal thread is formed in the inner wall of the annular groove; the matching block is sleeved outside the connecting block.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and do not necessarily limit the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a sheath needle for guiding puncture in a puncture tool according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a mechanical lancet core in a lancet device according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a passive core for a lipid display in a puncturing tool according to an embodiment of the present invention;

FIG. 4 is a schematic view showing the structure of a fat developing lancet core in a puncture tool according to an embodiment of the present invention;

FIG. 5 is a schematic view of a blunted core of a water-based imaging needle in a puncturing tool according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a water-based imaging puncture needle core in a puncture tool according to an embodiment of the present invention;

FIG. 7 is a schematic view of the introducer puncture sheath needle of FIG. 1 in use with the mechanical core of the puncture needle of FIG. 2;

FIG. 8 is a schematic view of the guiding sheath needle shown in FIG. 1 in cooperation with the passive core needle shown in FIG. 3;

FIG. 9 is a schematic view of the guiding sheath needle shown in FIG. 1 in cooperation with the core of the imaging needle shown in FIG. 4;

FIG. 10 is a schematic view of the introducer sheath needle of FIG. 1 in use with the blunt core needle of FIG. 5 in an aqueous imaging configuration;

FIG. 11 is a schematic view of the introducer sheath needle shown in FIG. 1 in combination with the aqueous imaging core needle shown in FIG. 6.

Icon: 10-guiding a puncture sheath needle; 20-mechanical puncture needle core; 30-lipography inactive stylet; 40-lipography puncture needle core; 50-aqueous imaging blunt stylet; 60-aqueous imaging puncture needle core; 70-a connector; 80-mating parts; 11-a channel; 21-mechanical piercing rod part; 22-mechanical puncture needle; 31-lipid imaging blunt shaft; 32-lipofective imaging blunt needles; 33-first lipid cavity; 41-lipid imaging puncture rod part; 42-lipid imaging puncture needle head; 43-second lipid cavity; 51-aqueous imaging blunt shaft; 52-aqueous imaging blunt needle; 53-a first aqueous chamber; 61-aqueous imaging puncture shaft part; 62-aqueous imaging puncture needle head; 63-a second aqueous chamber.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 to 11, the present invention provides a puncture tool, which comprises a guide puncture sheath needle 10 and a plurality of puncture needle cores; the puncture sheath needle is arranged in a hollow way so as to form a channel 11 in the guide puncture sheath needle 10, a connecting piece 70 is arranged at the first end of the guide puncture sheath needle 10, and a matching piece 80 is arranged at the first end of each puncture needle core; the second end of the puncture needle core can penetrate into the channel 11 from the first end of the guide puncture sheath needle 10 to extend out from the second end of the guide puncture sheath needle 10; the connecting member 70 and the fitting member 80 are detachably connected; at least some of the lancet cores are of different configurations.

In this embodiment, at least some of the plurality of puncture needle cores have different structures, and a proper structure of the puncture needle core can be set according to different puncture parts or different puncture requirements; the connecting piece 70 is detachably connected with the matching piece 80, so that the guided puncture sheath needle 10 and a plurality of legend needle cores can be detachably connected; can change different puncture stylet according to different application position or different puncture demands to make current position or current puncture demand, can match suitable puncture stylet, puncture stylet is suitable can realize the clear position relation that shows the pjncture needle and image between normal structure and focus, thereby can avoid the blind and wear, improves the puncture process accuracy, thereby improves magnetic resonance imaging effect and puncture precision.

The material of the guiding puncture sheath needle 10 is preferably titanium alloy, and the guiding puncture sheath needle has the characteristics of good magnetic compatibility, small magnetic resonance artifact, good strength, good ductility and the like.

The inner diameter of the guiding puncture sheath needle 10 can be set according to specific needs, and optionally, the difference between the outer diameter and the inner diameter of the puncture sheath needle is 0.1mm-0.2mm (for example, 0.1mm, 0.12mm, 0.15mm, 0.18mm or 0.2 mm).

The plurality of puncture needle cores at least comprises the following five types:

the first method comprises the following steps:

as shown in fig. 2 and 7, at least one of the lancet cores is a mechanical lancet core 20, the mechanical lancet core 20 includes a mechanical lancet rod 21 and a mechanical lancet head 22 connected to the mechanical lancet rod 21, the end of the mechanical lancet head is sharp, and the matching element 80 is disposed at an end of the mechanical lancet rod 21 far away from the mechanical lancet head 22.

When the mechanical puncture needle core 20 in the embodiment is needed, the second end of the mechanical puncture needle core 20 (i.e. the mechanical puncture needle head 22) is inserted from the first end of the guiding puncture sheath needle 10 and is penetrated from the second end of the guiding puncture sheath needle 10, and the mutual locking of the mechanical puncture needle core 20 and the guiding puncture sheath needle 10 is realized through the connection of the connecting piece 70 and the fitting piece 80; the puncture device can be suitable for puncture of lesions (such as most liver lesions) with clear development and high signal intensity of magnetic resonance guide images, and is also suitable for puncture processes of all skin punctured by skin and surface structures.

Wherein, the length of the mechanical puncture needle head 22 is 1.5mm-2.5mm (1.5 mm, 1.7mm, 1.9mm, 2.0mm, 2.2mm or 2.5mm, etc.), and the outer diameter of the mechanical puncture rod part 21 is smaller than the inner diameter of the guided puncture sheath needle 10 to 0.05mm-0.15mm (for example, 0.05mm, 0.08mm, 0.1mm, 0.13mm or 0.15mm, etc.).

The mechanical lancet core 20 is preferably made of titanium alloy, and has the characteristics of good magnetic compatibility, small magnetic resonance artifact, good strength, good ductility and the like. The mechanical lancet core 20 may be provided as a solid structure.

The mechanical piercing needle 22 may be conical in shape; optionally, the mechanical puncture needle head 22 has a triangular pyramid structure, which effectively improves the puncture passing performance.

The number of the mechanical lancet 20 may be one or more, and may be set as needed.

And the second method comprises the following steps:

as shown in fig. 3 and 8, at least one of the plurality of lancet cores is a fat imaging inactive core 30; the lipid imaging blunt needle core 30 comprises a lipid imaging blunt shaft part 31 and a lipid imaging blunt needle head 32 connected with the lipid imaging blunt shaft part 31, and the end part of the lipid imaging blunt needle head 32 is round and blunt; the inside of the fat imaging blunt rod part 31 and the inside of the fat imaging blunt needle head 32 are communicated with a first fat cavity 33 which can be filled with medical fat substances (such as cod liver oil) or gadolinium magnetic resonance contrast agents; fitting 80 is disposed at the end of lipoimaging-blunt shaft 31 distal to lipoimaging-blunt needle 32.

When the lipid imaging blunt needle core 30 in the present embodiment is needed, the second end of the lipid imaging blunt needle core 30 (i.e. the lipid imaging blunt needle 32) is inserted into the first end of the guiding puncture sheath needle 10 and is extended out of the second end of the guiding puncture sheath needle 10, and the lipid imaging blunt needle core 30 and the guiding puncture sheath needle 10 are locked with each other through the connection of the connecting piece 70 and the fitting piece 80; the passive core 30 can be applied to the magnetic resonance guided needle (e.g. during lung puncture, the specific path of the puncture needle needs to be scanned in the lung field), shielding the free water signal (pressurized water sequence) and imaging the puncture needle, and the passive puncture is needed at the same time.

Wherein the length of the lipid imaging blunt needle 32 is 0.5mm to 1.5mm (0.5 mm, 0.8mm, 1.0mm, 1.2m or 1.5mm, etc.), and the outer diameter of the lipid imaging blunt shaft part 31 is smaller than the inner diameter of the guided puncture sheath needle 10 to 0.05mm to 0.15mm (for example, 0.05mm, 0.07mm, 0.08mm, 0.10mm, 0.13mm or 0.15mm, etc.).

The inactive core 30 can be made of plastic.

The end of the lipid imaging blunt tip 32 may be flat or spherical.

The number of the passive core pins 30 for lipid imaging may be one or more, and may be set as required.

And the third is that:

as shown in fig. 4 and 9, at least one of the plurality of lancet cores is a lipid imaging lancet core 40; the lipid imaging puncture needle core 40 comprises a lipid imaging puncture rod part 41 and a lipid imaging puncture needle head 42 connected with the lipid imaging puncture rod part 41, and the end part of the lipid imaging puncture needle head 42 is sharp; a second lipid cavity 43 for filling medical lipid substances or gadolinium magnetic resonance contrast agents is arranged in the end part of the lipid imaging puncture rod part 41 close to the lipid imaging puncture needle head 42, and a matching part 80 is arranged at one end of the lipid imaging puncture rod part 41 far away from the lipid imaging puncture needle head 42.

When the lipid imaging puncture needle core 40 of the present embodiment is needed, the second end of the lipid imaging puncture needle core 40 (i.e. the lipid imaging puncture needle head 42) is inserted into the first end of the guiding puncture sheath needle 10 and is penetrated out of the second end of the guiding puncture sheath needle 10, and the lipid imaging puncture needle core 40 and the guiding puncture sheath needle 10 are locked with each other through the connection of the connecting piece 70 and the fitting piece 80; the cooperation of the lipidic imaging puncture needle core 40 and the guiding puncture sheath needle 10 is suitable for the condition that the focus of a puncture target area can not be distinguished from a low-signal puncture needle under a magnetic resonance guiding image, but the specific position of the needle point needs to be observed (for example, when the operation such as regional puncture sampling or particle implantation is carried out in the low-signal focus), or the condition that the imaging of the puncture needle point needs to be carried out while shielding a free water signal (a water pressing sequence).

Wherein the length of the lipid imaging puncture needle 42 is 1.5mm-2.5mm (e.g., 1.5mm, 1.7mm, 1.9mm, 2.0mm, 2.3mm, or 2.5 mm), and the outer diameter of the lipid imaging puncture shaft portion 41 is smaller than the inner diameter of the guiding puncture sheath needle 10 to 0.05mm-0.15mm (0.05 mm, 0.06mm, 0.09mm, 0.1mm, 0.12mm, 0.14mm, or 0.15 mm).

The material of the lipid imaging puncture needle core 40 is preferably titanium alloy; optionally, the lipid imaging puncture needle core 40 is made of titanium alloy, and has the characteristics of good magnetic compatibility, small magnetic resonance artifact, good strength, good ductility and the like.

The lipid imaging puncture needle 42 can be provided as a solid structure; the portion of the lipid imaging puncture shaft 41 remote from the lipid imaging puncture needle 42 is configured as a solid structure, i.e., the hollow portion of the lipid imaging puncture shaft 41 is located between the lipid imaging puncture needle 42 and the solid portion of the lipid imaging puncture shaft 41.

The structure of the lipid imaging puncture needle head 42 can be a conical structure; optionally, the lipid imaging puncture needle head 42 is in a triangular pyramid structure, so that the puncture permeability is effectively improved.

The number of the lipid imaging puncture needle core 40 may be one or more.

And fourthly:

as shown in fig. 5 and 10, at least one of the plurality of lancet cores is an aqueous imaging blunt lancet core 50; the aqueous imaging blunt needle core 50 comprises an aqueous imaging blunt shaft part 51 and an aqueous imaging blunt needle 52 connected with the aqueous imaging blunt shaft part 51, and the end part of the aqueous imaging blunt needle 52 is round and blunt; the inside of the water-based imaging blunt shaft part 51 is communicated with the inside of the water-based imaging blunt needle 52, and a first water-based cavity 53 which can be filled with medical substances (such as medical hydrogel) containing free water molecules is arranged; fitting 80 is disposed at an end of the aqueous imaging blunt shaft 51 distal to the aqueous imaging blunt needle 52.

When the aqueous imaging blunt needle core 50 of the present embodiment is needed, the second end of the aqueous imaging blunt needle core (i.e. the aqueous imaging blunt needle tip 52) is inserted into the first end of the guiding puncture sheath needle 10 and is inserted out of the second end of the guiding puncture sheath needle 10, and the aqueous imaging blunt needle core and the guiding puncture sheath needle 10 are locked with each other through the connection of the connecting element 70 and the fitting element 80; the cooperation of the water-based imaging blunt stylet and the guided puncture sheath needle 10 can be applied to the situations that needle channel imaging is needed while shielding fat signals (pressing sequence) in magnetic resonance guidance (for example, in the puncture process of abdominal cavity pathological changes with rich fat content, the specific path of the puncture needle needs to be positioned and scanned in the abdominal cavity), and the situations that blunt puncture is needed at the same time.

Wherein the length of the aqueous imaging blunt needle 52 is 0.5mm to 1.5mm (0.5 mm, 0.8mm, 1.0mm, 1.2m or 1.5mm, etc.), and the outer diameter of the aqueous imaging blunt shaft part 51 is smaller than the inner diameter of the guided puncture sheath needle 10 to 0.05mm to 0.15mm (e.g., 0.05mm, 0.07mm, 0.08mm, 0.10mm, 0.13mm or 0.15mm, etc.).

The material of the aqueous imaging blunt core 50 is preferably plastic.

The end of the aqueous imaging blunt needle 52 may be disposed in a flat or spherical configuration.

The number of the aqueous imaging passivity may be one or more, and may be set as required.

And a fifth mode:

as shown in fig. 6 and 11, at least one of the plurality of lancet cores is an aqueous imaging lancet core 60; the aqueous imaging puncture needle core 60 comprises an aqueous imaging puncture rod part 61 and an aqueous imaging puncture needle head 62 connected with the aqueous imaging puncture rod part 61, and the end part of the aqueous imaging puncture needle head 62 is sharp; a second aqueous cavity 63 filled with medical substances containing free water molecules is arranged in the end part of the aqueous imaging puncture rod part 61 close to the aqueous imaging puncture needle head 62, and a matching piece 80 is arranged at one end of the aqueous imaging puncture rod part 61 far away from the aqueous imaging puncture needle head 62.

When the aqueous imaging puncture needle core 60 of the present embodiment is needed, the second end of the aqueous imaging puncture needle core 60 (i.e. the aqueous imaging puncture needle head 62) is inserted into the first end of the guiding puncture sheath needle 10 and is penetrated out of the second end of the guiding puncture sheath needle 10, and the aqueous imaging puncture needle core 60 and the guiding puncture sheath needle 10 are locked with each other by the connection of the connecting element 70 and the fitting element 80; the cooperation of the aqueous imaging puncture needle core 60 and the guiding puncture sheath needle 10 is suitable for the situation that the specific position of the needle point needs to be observed while the imaging is carried out on the focus of the puncture target area by pressing a fat sequence.

Wherein the length of the aqueous imaging puncture needle head 62 is 1.5mm to 2.5mm (e.g., 1.5mm, 1.7mm, 1.9mm, 2.0mm, 2.3mm, 2.5mm, etc.), and the outer diameter of the aqueous imaging puncture shaft portion 61 is smaller than the inner diameter of the guided puncture sheath needle 10 by 0.05mm to 0.15mm (0.05 mm, 0.06mm, 0.09mm, 0.1mm, 0.12mm, 0.14mm, 0.15mm, etc.).

The aqueous imaging puncture needle core 60 can be made of titanium alloy, and has the characteristics of good magnetic compatibility, small magnetic resonance artifact, good strength, good ductility and the like.

The aqueous imaging puncture needle 62 may be provided as a solid structure; the portion of the aqueous imaging puncture shaft portion 61 remote from the aqueous imaging puncture needle 62 is configured as a solid structure, i.e., the hollow portion of the aqueous imaging puncture shaft portion 61 is located between the aqueous imaging puncture needle 62 and the solid portion of the aqueous imaging puncture shaft portion 61.

The structure of the aqueous imaging puncture needle head 62 can be a conical structure; optionally, the water-based imaging puncture needle head 62 is in a triangular pyramid structure, so that the puncture permeability is effectively improved.

The number of the aqueous imaging lancet cores 60 may be one or more.

In addition to any of the above embodiments, the connecting element 70 and the fitting element 80 may be configured in various forms, such as: the connecting piece 70 is a lug arranged at the first end of the guided puncture sheath needle 10, a blocking hole is arranged on the wall of the second end of the lug, which is far away from the guided puncture sheath needle 10, in the length direction of the guided puncture sheath needle 10, and the matching piece 80 is a plug arranged at the second end of the puncture needle core, and the plug is blocked in the blocking hole.

As an alternative, as shown in fig. 1 to 11, the connecting member 70 is a connecting block, and an external thread is provided on an outer wall of the connecting block; the matching piece 80 is a matching block, an annular groove is arranged on the wall of the matching block close to the second end of the puncture needle core, and an internal thread is arranged on the inner wall of the annular groove; the matching block is sleeved outside the connecting block.

In this embodiment, penetrate the in-process that targets in place by the first end of guide puncture sheath needle 10 with the second end of puncture needle core, the connecting block inserts in the cooperation piece, makes puncture needle core guide puncture sheath needle 10 relatively and rotates to pass through the screw thread with connecting block and cooperation piece and screw up, easy to assemble facilitates the use.

The material of connecting block and the material of cooperation piece all can adopt plastics.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Moreover, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments, rather than other features, the use of features of different embodiments in combination is meant to be within the scope of the invention and form a different embodiment.

Claims (10)

1. A puncture tool, comprising: a plurality of puncture needle cores and a puncture sheath needle (10) are guided; the puncture sheath needle is arranged in a hollow manner to form a channel (11) in the guide puncture sheath needle (10), a connecting piece (70) is arranged at the first end of the guide puncture sheath needle (10), and a fitting piece (80) is arranged at the first end of each puncture needle core; the second end of the puncture needle core can penetrate into the channel (11) from the first end of the guide puncture sheath needle (10) to extend out from the second end of the guide puncture sheath needle (10); the connecting piece (70) is detachably connected with the matching piece (80); at least a part of the puncture needle cores have different structures.

2. The puncture tool according to claim 1, wherein at least one of the plurality of lancet cores is a mechanical lancet core (20); the mechanical puncture needle core (20) comprises a mechanical puncture rod part (21) and a mechanical puncture needle head (22) connected with the mechanical puncture rod part (21), the end part of the mechanical puncture needle head is sharp, and the matching piece (80) is arranged at one end, far away from the mechanical puncture needle head (22), of the mechanical puncture rod part (21).

3. The puncture tool according to claim 2, wherein at least one of the plurality of puncture cores is a lipid imaging blunt core (30); the blunted core (30) comprises a blunted shaft part (31) and a blunted needle (32) connected with the blunted shaft part (31), and the end of the blunted needle (32) is round; a first lipid cavity (33) is communicated between the inside of the lipid imaging blunt rod part (31) and the inside of the lipid imaging blunt needle head (32); the fitting (80) is arranged at one end of the lipid imaging blunt shaft part (31) far away from the lipid imaging blunt needle head (32).

4. The puncture tool according to claim 3, wherein at least one of the plurality of puncture cores is a lipid imaging puncture core (40); the lipidic imaging puncture needle core (40) comprises a lipidic imaging puncture rod part (41) and a lipidic imaging puncture needle head (42) connected with the lipidic imaging puncture rod part (41), and the end part of the lipidic imaging puncture needle head (42) is sharp; a second lipid cavity (43) is arranged in the end part, close to the lipid imaging puncture needle head (42), of the lipid imaging puncture rod part (41), and the matching piece (80) is arranged at one end, far away from the lipid imaging puncture needle head (42), of the lipid imaging puncture rod part (41).

5. The puncture tool according to claim 4, wherein at least one of the plurality of lancet cores is an aqueous imaging blunt lancet core (50); the aqueous imaging blunt needle core (50) comprises an aqueous imaging blunt shaft part (51) and an aqueous imaging blunt needle head (52) connected with the aqueous imaging blunt shaft part (51), and the end part of the aqueous imaging blunt needle head (52) is round and blunt; a first water cavity (53) is communicated between the inside of the water-based imaging blunt shaft part and the inside of the water-based imaging blunt needle head (52); the fitting (80) is arranged at one end of the water-based imaging blunt rod part (51) far away from the water-based imaging blunt needle head (52).

6. The puncture tool according to claim 5, wherein at least one of the plurality of the lancet cores is an aqueous imaging lancet core (60); the aqueous imaging puncture needle core (60) comprises an aqueous imaging puncture needle rod part (61) and an aqueous imaging puncture needle head (62) connected with the aqueous imaging puncture needle rod part (61), and the end part of the aqueous imaging puncture needle head (62) is sharp; the end part of the water-based imaging puncture rod part (61) close to the water-based imaging puncture needle head (62) is internally provided with a second water-based cavity (63), and the matching piece (80) is arranged at one end of the water-based imaging puncture rod part (61) far away from the water-based imaging puncture needle head (62).

7. The puncture tool according to claim 6, wherein the mechanical puncture needle (22), the lipid imaging puncture needle, and the aqueous imaging puncture needle (62) are each a triangular pyramid structure.

8. The puncture tool of claim 6, wherein the difference between the outer diameter and the inner diameter of the puncture sheath needle is 0.1mm to 2.0mm;

and/or the length of the mechanical puncture needle head (22) is 1.5mm-2.5mm, and the outer diameter of the mechanical puncture rod part (21) is smaller than the inner diameter of the guide puncture sheath needle (10) to 0.05mm-0.15mm;

and/or the length of the lipid imaging blunt needle head (32) is 0.5mm-1.5mm, and the outer diameter of the lipid imaging blunt shaft part (31) is smaller than the inner diameter of the guide puncture sheath needle (10) to 0.05mm-0.15mm;

and/or the length of the lipid imaging puncture needle head (42) is 1.5mm-2.5mm, and the outer diameter of the lipid imaging puncture rod part (41) is smaller than the inner diameter of the guide puncture sheath needle (10) to 0.05mm-0.15mm;

and/or the length of the aqueous imaging blunt needle head (52) is 0.5mm-1.5mm, and the outer diameter of the aqueous imaging blunt shaft part (51) is smaller than the inner diameter of the guide puncture sheath needle (10) to 0.05mm-0.15mm;

and/or the length of the aqueous imaging puncture needle head (62) is 1.5mm-2.5mm, and the outer diameter of the aqueous imaging puncture rod part (61) is smaller than the inner diameter of the guide puncture sheath needle (10) to 0.05mm-0.15mm.

9. The puncture tool according to claim 6, wherein the puncture sheath needle is made of a titanium alloy;

and/or the mechanical puncture needle core (20) is made of titanium alloy;

and/or the material of the passive needle core (30) of the lipid imaging is plastic;

and/or the material of the lipidic imaging puncture needle core (40) is titanium alloy;

and/or the material of the water-based imaging blunt needle core (50) is plastic;

and/or the material of the aqueous imaging puncture needle core (60) is titanium alloy.

10. Piercing tool according to any one of claims 1 to 9, characterized in that the connecting piece (70) is a connecting block, on the outer wall of which an external thread is provided; the matching piece (80) is a matching block, an annular groove is formed in the wall, close to the second end of the puncture needle core, of the matching block, and internal threads are formed in the inner wall of the annular groove; the matching block is sleeved outside the connecting block.

Images