CN209751107U - Biopsy needle and needle core thereof - Google Patents
Biopsy needle and needle core thereof Download PDFInfo
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- CN209751107U CN209751107U CN201920097798.4U CN201920097798U CN209751107U CN 209751107 U CN209751107 U CN 209751107U CN 201920097798 U CN201920097798 U CN 201920097798U CN 209751107 U CN209751107 U CN 209751107U
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- needle
- crimping
- biopsy
- distal end
- tube
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Abstract
The embodiment of the utility model discloses biopsy needle and nook closing member thereof. This biopsy needle nook closing member includes: the needle comprises a needle head, a needle body and a crimping pipe, wherein the diameter of the tangent plane of the needle head is the same as that of the tangent plane of the needle body, the near end of the needle head extends into the far end of the crimping pipe and is connected with the crimping pipe, the far end of the needle body is inserted into the near end of the crimping pipe and is connected with the crimping pipe, the needle head is made of nickel-titanium alloy materials, and the needle body is made of stainless steel alloy materials. The embodiment of the utility model provides a biopsy needle nook closing member and biopsy needle passes through the connection structure of syringe needle, needle body and crimping pipe to, utilize two sections different material characteristics of nook closing member, when making the nook closing member distal end meet the resistance, the syringe needle can take place crooked, with reacing all ring edge type focus position, increases the application scope of biopsy needle.
Description
Technical Field
The embodiment of the utility model provides a relate to medical instrument, especially relate to a biopsy needle and nook closing member thereof.
Background
The biopsy needle is a medical appliance which can go deep into the human body to directly reach the focus and perform puncture sampling, and is a disposable medical appliance.
In the prior art, the biopsy needle mainly comprises a needle core and an outer tube, the needle core is arranged inside the outer tube in a penetrating mode, a handle is arranged at the tail end of the needle core, the near end of the needle core is close to one end of an operator, the far end of the needle core is far away from the operator, the operator stretches the outer tube and the needle core into a human body, the handle is pulled again, the needle core slides along the outer tube until the far end of the outer tube is stretched out, and the far end of the biopsy needle core is pointed and used for puncture sampling for subsequent diagnostic testing.
the inventor of the application finds that the biopsy needle core in the prior art is a complete metal, the distal end of the needle core has no flexibility, the biopsy needle core cannot reach the peripheral lesion position through a curved path, and the application range is limited.
therefore, how to create a biopsy needle with a bendable distal end of a needle core is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a biopsy needle and nook closing member thereof can satisfy the nook closing member distal end and possess the flexible performance to increase the application scope of biopsy needle.
The embodiment of the utility model provides a biopsy needle nook closing member, include: a needle head, a needle body and a crimping pipe;
The diameter of the section of the needle head is the same as that of the section of the needle body;
The proximal end of the needle head extends into the distal end of the crimping pipe and is connected with the crimping pipe, and the distal end of the needle body is inserted into the proximal end of the crimping pipe and is connected with the crimping pipe;
The needle head is made of nickel-titanium alloy material;
the needle body is made of stainless steel alloy materials.
In a feasible scheme, a first clamping groove is formed in the proximal end of the needle head, a first clamping protrusion is formed in the distal end of the crimping pipe, and the first clamping groove and the first clamping protrusion are mutually embedded, so that the proximal end of the needle head is connected with the crimping pipe.
In a feasible scheme, the distal end of the needle body is provided with a second clamping groove, the proximal end of the crimping tube is provided with a second clamping protrusion, and the second clamping groove and the second clamping protrusion are mutually embedded, so that the distal end of the needle body is connected with the crimping tube.
in one possible embodiment, the distal end of the needle body and the proximal end of the needle head abut against each other.
In one possible solution, the crimp tube is made of a heat shrink material or a stainless steel material.
In a feasible scheme, a sealant is coated between the needle head and the crimping pipe, or a sealant is coated between the needle body and the crimping pipe.
The embodiment of the utility model provides a biopsy needle is still provided, include: the needle core in any one of the above feasible schemes, the outer tube and the needle core are arranged in the outer tube in a penetrating way.
In one possible embodiment, the distal end of the outer tube is embedded with a spring.
In one possible solution, the wire diameter of the spring is less than or equal to 0.1 mm.
In one possible embodiment, the outer tube has a cross-sectional outer diameter of less than or equal to 1.6 mm.
the embodiment of the utility model provides a biopsy needle and nook closing member thereof, through the syringe needle, the connection structure of needle body and crimping pipe, the near-end of syringe needle stretches into the distal end of crimping pipe promptly and is connected with the crimping union coupling, the near-end that the distal end of needle body inserted the crimping pipe just with the crimping union coupling, and, utilize two sections exotic material characteristics of nook closing member, the syringe needle is made by nickel titanium alloy material promptly, the needle body is made by stainless steel alloy material simultaneously, when making the nook closing member distal end meet the resistance, the syringe needle can take place the bending, with reacing all ring edge type focus position, increase biopsy needle's application scope.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or 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 inventive labor.
Fig. 1 is a schematic structural view of a biopsy needle core in a first embodiment of the present invention;
Fig. 2 is a schematic structural view of a needle head according to a first embodiment of the present invention;
Fig. 3 is a schematic structural view of a crimping pipe according to a first embodiment of the present invention;
Fig. 4 is a schematic structural view of a needle body according to a first embodiment of the present invention;
Fig. 5 is a schematic structural view of a biopsy needle according to a second embodiment of the present invention;
the labels in the figure are:
A needle head 1;
A needle body 2;
A crimping tube 3;
a first engaging groove 11;
a first engaging projection 31;
A second engaging groove 21;
The second engaging projection 32;
an outer tube 4;
A spring 41.
Detailed Description
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
in the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
the near end of the utility model refers to the end close to the operator, and the far end refers to the end far away from the operator.
fig. 1 is the schematic structural view of the biopsy needle core in the first embodiment of the present invention, fig. 2 is the schematic structural view of the needle head in the first embodiment of the present invention, fig. 3 is the schematic structural view of the crimping tube in the first embodiment of the present invention, fig. 4 is the schematic structural view of the needle body in the first embodiment of the present invention.
As shown in fig. 1 to 4, the biopsy needle core of the present embodiment includes: a needle head 1, a needle body 2 and a crimping pipe 3.
the needle 1 is a hollow cylinder, the distal end of the needle 1 may be an inverted cone, a single bevel cone, a kuernun shape, or the like, and specifically, the distal end of the needle 1 in this embodiment is a bevel opening. The needle body 2 can be a solid cylinder or a hollow cylinder, and the section diameter of the needle head 1 is the same as that of the needle body 2. And, the proximal end of the needle 1 is inserted into the distal end of the crimping tube 3 and connected with the crimping tube 3, and the distal end of the needle body 2 is inserted into the proximal end of the crimping tube 3 and connected with the crimping tube 3. It is emphasized that the needle 1 is made of a nickel titanium alloy material and the needle body 2 is made of a stainless steel alloy material.
it can be easily found from the above description that, the biopsy needle core provided by the present embodiment, through the connection structure of the needle head 1, the needle body 2 and the crimping tube 3, that is, the proximal end of the needle head 1 extends into the distal end of the crimping tube 3 and is connected with the crimping tube 3, the distal end of the needle body 2 is inserted into the proximal end of the crimping tube 3 and is connected with the crimping tube 3, and by utilizing the two-section different material characteristics of the needle core, that is, the needle head 1 is made of a nickel-titanium alloy material, and the needle body 2 is made of a stainless steel alloy material, when the distal end of the needle core meets resistance, the needle head 1 can be bent to reach the peripheral lesion position, so as to increase the application range of the biopsy.
optionally, in this embodiment, the proximal end of the needle 1 is provided with a first engaging recess 11, the distal end of the crimping tube 3 is provided with a first engaging protrusion 31, and the first engaging recess 11 and the first engaging protrusion 31 are engaged with each other, so that the proximal end of the needle 1 is connected to the crimping tube 3. It should be noted that the first engaging recess may be an annular recess, or may be a plurality of annularly surrounding hemispherical recesses, and in cooperation therewith, the first engaging protrusion may also be an annular protrusion or a plurality of annularly surrounding hemispherical protrusions.
Optionally, in this embodiment, the distal end of the needle body 2 is provided with a second engaging recess 21, the proximal end of the crimping tube 3 is provided with a second engaging protrusion 32, and the second engaging recess 21 and the second engaging protrusion 32 are engaged with each other, so that the distal end of the needle body 2 is connected to the crimping tube 3. It should be noted that the second engaging recess may be an annular recess, or may be a plurality of annularly surrounding hemispherical recesses, and in cooperation therewith, the second engaging protrusion may also be an annular protrusion or a plurality of annularly surrounding hemispherical protrusions.
Optionally, in this embodiment, the distal end of the needle body 2 and the proximal end of the needle 1 abut against each other. The structure can enhance the force transmission effect between the needle body and the needle head.
Alternatively, in the present embodiment, the crimp tube 3 is made of a heat shrinkable material or a stainless steel material. When the compression joint pipe extends into a human body, the compression joint pipe absorbs heat and contracts, and the connection strength of the needle head and the needle body is increased. The heat-shrinkable material is a general-purpose material and is commercially available.
optionally, in this embodiment, a sealant is coated between the needle head and the crimping tube, or a sealant is coated between the needle body and the crimping tube. The sealant can increase the sealing effect between the needle head and the crimping pipe or between the needle body and the crimping pipe.
The second embodiment of the present invention provides a biopsy needle, fig. 5 is a schematic structural diagram of a biopsy needle in the second embodiment of the present invention, as shown in fig. 5, the biopsy needle in this embodiment includes: the outer tube 4 and the stylet in the first embodiment, specifically, the outer tube is a hose, and the stylet is arranged in the outer tube 4.
It is obvious from the description of the first embodiment that the biopsy needle provided in the second embodiment can also be connected to the crimp tube 3 through the connection structure of the needle head 1, the needle body 2 and the crimp tube 3, that is, the proximal end of the needle head 1 extends into the distal end of the crimp tube 3 and is connected to the crimp tube 3, the distal end of the needle body 2 is inserted into the proximal end of the crimp tube 3 and is connected to the crimp tube 3, and the two-section different material characteristic of the needle core is utilized, that is, the needle head 1 is made of a nickel-titanium alloy material, and the needle body 2 is made of a stainless steel alloy material, so that when the distal end of the needle core meets resistance, the needle head 1 can be bent to reach the peripheral lesion position, thereby increasing the application range.
Further, in the present embodiment, the distal end of the outer tube is embedded with a spring 41. The length of the spring 41 may be adjusted to be more practical, in this embodiment, the distal end of the spring is near the distal end of the outer tube, and the proximal end of the spring extends to the needle, but not to the crimp tube. The spring 41 is used for restoring the outer tube 4 to a straight state after being bent, thereby facilitating the needle retracting operation.
Optionally, the wire diameter of the spring 41 in this embodiment is less than or equal to 0.1mm to further reduce the influence on the outer diameter dimension of the outer tube 4.
In addition, optionally, the outer diameter of the section of the outer tube 4 in the embodiment is less than or equal to 1.6 mm. So that the biopsy needle is suitable for bronchoscopes with a working channel smaller than 2 mm.
In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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.
Claims (10)
1. A biopsy needle core, comprising: a needle head, a needle body and a crimping pipe;
The diameter of the section of the needle head is the same as that of the section of the needle body;
The proximal end of the needle head extends into the distal end of the crimping pipe and is connected with the crimping pipe, and the distal end of the needle body is inserted into the proximal end of the crimping pipe and is connected with the crimping pipe;
The needle head is made of nickel-titanium alloy material;
The needle body is made of stainless steel alloy materials.
2. The biopsy needle core according to claim 1, wherein the proximal end of the needle head is provided with a first engaging recess, the distal end of the crimping tube is provided with a first engaging protrusion, and the first engaging recess and the first engaging protrusion are engaged with each other to connect the proximal end of the needle head with the crimping tube.
3. The biopsy needle core according to claim 1, wherein the distal end of the needle body is provided with a second engaging recess, the proximal end of the crimping tube is provided with a second engaging protrusion, and the second engaging recess and the second engaging protrusion are engaged with each other to connect the distal end of the needle body with the crimping tube.
4. The biopsy needle core of claim 1, wherein the distal end of the needle body and the proximal end of the needle abut each other.
5. the biopsy needle core according to any one of claims 1 to 4, wherein the crimping tube is made of a heat shrink material or a stainless steel material.
6. The biopsy needle core according to any one of claims 1 to 4, wherein a sealant is coated between the needle head and the crimping tube, or a sealant is coated between the needle body and the crimping tube.
7. A biopsy needle, comprising: an outer tube and a stylet according to any one of claims 1 to 6, the stylet being arranged through the outer tube.
8. The biopsy needle of claim 7, wherein the distal end of the outer tube is embedded with a spring.
9. The biopsy needle of claim 8, wherein the spring has a wire diameter of less than or equal to 0.1 mm.
10. The biopsy needle of claim 7, wherein the outer tube has a cross-sectional outer diameter of less than or equal to 1.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097798.4U CN209751107U (en) | 2019-01-21 | 2019-01-21 | Biopsy needle and needle core thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097798.4U CN209751107U (en) | 2019-01-21 | 2019-01-21 | Biopsy needle and needle core thereof |
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| Publication Number | Publication Date |
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| CN209751107U true CN209751107U (en) | 2019-12-10 |
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| CN201920097798.4U Active CN209751107U (en) | 2019-01-21 | 2019-01-21 | Biopsy needle and needle core thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021159552A1 (en) * | 2020-02-11 | 2021-08-19 | 南微医学科技股份有限公司 | Needle assembly and sampling needle |
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2019
- 2019-01-21 CN CN201920097798.4U patent/CN209751107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021159552A1 (en) * | 2020-02-11 | 2021-08-19 | 南微医学科技股份有限公司 | Needle assembly and sampling needle |
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