CN213430439U - Separated puncture needle and inner tube thereof - Google Patents
Separated puncture needle and inner tube thereof Download PDFInfo
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- CN213430439U CN213430439U CN202021199185.0U CN202021199185U CN213430439U CN 213430439 U CN213430439 U CN 213430439U CN 202021199185 U CN202021199185 U CN 202021199185U CN 213430439 U CN213430439 U CN 213430439U
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- luer connector
- flexible hose
- tube
- inner tube
- needle
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Abstract
The utility model relates to the technical field of medical equipment, a disconnect-type pjncture needle and inner tube thereof is disclosed. This disconnect-type pjncture needle includes: the device comprises a Y-shaped joint, an outer pipe, a connecting mechanism, an adjusting pipe and an inner pipe; the inner tube is the syllogic structure, includes: a hard hose, a flexible hose and a needle tip; the rigidity of the hard hose is greater than that of the flexible hose; the near end of the flexible hose is fixedly connected with the flexible hose, and the far end of the flexible hose is in inserting fit with the needle point. When the separated puncture needle and the inner tube thereof are used, the needle head can smoothly puncture tissues and collect the tissues, thereby meeting the medical requirements of the puncture needle.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a separated puncture needle.
Background
The puncture needle is a medical instrument for sampling and injecting tissues of various organs such as kidney, liver, lung, mammary gland, thyroid gland, prostate gland, pancreas, testis, uterus, ovary, body surface and the like in minimally invasive surgery, and the puncture needle used by modern doctors is developed on the basis of an intravenous infusion needle and an injection needle.
The puncture needle comprises a connector, an outer tube and an inner tube which are fixedly connected, the distal end of the inner tube is provided with a needle head, the inner tube is arranged in the outer tube in a penetrating way, and when the connector is pushed and the needle head is driven to extend out of the outer tube, tissues can be sampled or injected. SUS304/316L medical stainless steel is commonly used in prior art needle tips, and the outer and inner tubes are typically flexible tubes for proper bending within the body.
However, in some cases, the needle of the prior art cannot smoothly penetrate into the tissue, which leads to the failure of the needle to complete tissue collection or injection, and thus fails to meet the medical requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a disconnect-type pjncture needle and inner tube thereof to solve the problem that the pjncture needle among the above-mentioned background art can't pierce the tissue under certain circumstances.
In order to achieve the above object, the utility model provides an inner tube of disconnect-type pjncture needle in the first aspect, the inner tube is the syllogic structure, include: a hard hose, a flexible hose and a needle tip;
the rigidity of the hard hose is greater than that of the flexible hose;
the near end of the flexible hose is fixedly connected with the flexible hose, and the far end of the flexible hose is in inserting fit with the needle point. This kind of inner tube passes through the syllogic structure, and contains stereoplasm hose, flexible hose and needle point, and outside utilizing flexible hose to maintain required bending property, still increased the rigidity of inner tube when axial displacement through the stereoplasm hose, make the syringe needle pierce the tissue smoothly to accomplish the collection or inject, satisfy the medical demand of pjncture needle, solved the problem that the pjncture needle in the above-mentioned background art can't pierce the tissue under certain circumstances.
Preferably, the proximal end of the flexible hose is fixedly connected with the flexible hose in a bonding mode, and the distal end of the flexible hose is in insertion fit with the needle tip in an interference fit mode. The structure is convenient to produce and is stable in connection.
The utility model provides a disconnect-type pjncture needle in the second aspect, include: a Y-shaped joint, an outer tube, a connecting mechanism, an adjusting tube and the inner tube of the first aspect;
the connecting mechanism comprises a female luer connector and a male luer connector;
the near end of the adjusting tube is connected with the Y-shaped joint, and the far end of the adjusting tube is connected with the inner tube;
the distal end of the female luer connector is connected with the outer tube;
the inner tube is arranged in the outer tube from the proximal end of the female luer connector in a penetrating way;
the female luer connector is detachably connected with the male luer connector, and the male luer connector is positioned on the proximal end side of the female luer connector;
the male luer connector is provided with a locking structure, and the locking structure is used for enabling the male luer connector to clamp the adjusting pipe. This disconnect-type pjncture needle not only through the syllogic structure of inner tube, and contain stereoplasm hose, flexible hose and needle point, outside utilizing flexible hose to maintain required bending property, still increased the rigidity of inner tube when axial displacement through the stereoplasm hose, make the syringe needle can pierce the tissue smoothly to accomplish collection or injection, satisfy the medical demand of pjncture needle. And the locking structure of the male luer connector realizes the limiting function of the inner pipe during axial movement.
Preferably, the locking structure is a screw cap, the proximal end of the male luer connector is provided with an expanded end, and when the adjusting pipe is inserted into the male luer connector, the expanded end is contracted by screwing the screw cap, so that the adjusting pipe is locked.
Preferably, the locking structure is the lock ring, the surface both sides of public luer connect all are provided with the spout, the near-end of spout is provided with first cross slot, the distal end of spout is provided with the second cross slot, the tip of first cross slot with a tip intercommunication of spout, the tip of second cross slot with another tip intercommunication of spout, the inner wall both sides of lock ring all are provided with the thread slipping, just the lock ring passes through the thread slipping slides in spout, first cross slot and second cross slot. The locking of the adjusting tube is achieved by tightening the locking ring so that the enlarged end contracts.
Preferably, the proximal end of the male luer connector is provided with a thread groove, one end of the female luer connector is provided with an external thread, and the female luer connector is connected in the thread groove through the external thread, so that the operation is simple and the assembly is convenient.
Preferably, a plugging pipe for improving the sealing effect is arranged in the threaded groove, the female luer connector is connected in the threaded groove through the external thread, and meanwhile, the plugging pipe is plugged at the end part of the female luer connector, so that the sealing effect of the joint of the female luer connector and the male luer connector is improved.
Preferably, the outer tube adopts the polyvinyl chloride material to make, and this material has good wear resistance and corrosion resistance, and the structure is firm, safe and reliable.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a Y-shaped joint in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a connection mechanism in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a nut according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of an outer tube in embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a male luer connector in embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a lock ring in embodiment 2 of the present invention.
In the figure: 1. a Y-shaped joint; 11. an adjusting tube; 2. a connecting mechanism; 21. a male luer fitting; 211. a thread groove; 212. inserting a pipe; 213. an enlarged end; 214. a chute; 2141. a first transverse slot; 2142. a second transverse groove; 22. a nut; 23. a female luer fitting; 231. an external thread; 24. a locking ring; 241. sliding and buckling; 3. an outer tube; 31. an inner tube; 311. a rigid hose; 312. a flexible hose; 313. a needle tip.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 indicated orientations and positional relationships based on the drawings and are used for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below 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.
As described in the background of the present application, a puncture needle in the prior art includes a connector, an outer tube and an inner tube, the connector is fixedly connected to the inner tube, a needle is disposed at a distal end of the inner tube, the inner tube is inserted into the outer tube, and when the connector is pushed and the needle is driven to extend out of the outer tube, tissue can be sampled or injected. The inventor of the application finds that the reason why the needle head of the puncture needle cannot smoothly puncture the tissue under some conditions is that the needle head of the puncture needle needs to depend on the rigidity of the hose during puncture so as to realize further movement in the axial direction, and the common hose is difficult to meet the requirement on the rigidity due to the limitation of materials.
In order to solve the above problems, the inventor of the present application proposes a technical solution of the present application, and specific embodiments are as follows:
example 1
A split puncture needle, as shown in fig. 1 to 5, comprising: the Y-shaped joint 1, the outer pipe 3, the inner pipe 31, the connecting mechanism 2 and the adjusting pipe 111; the connecting mechanism comprises a female luer connector 21 and a male luer connector 23; the near end of the adjusting tube 11 is connected with the Y-shaped joint 1, and the far end of the adjusting tube 11 is connected with the inner tube 31; the distal end of the female luer connector 23 is connected with the outer tube 3; the inner tube 31 is inserted into the outer tube 3 from the proximal end of the female luer 23; the female luer connector 23 is detachably connected with the male luer connector 21, and the male luer connector 21 is positioned at the proximal end side of the female luer connector 23; the male luer connector 21 is provided with a locking structure, the locking structure is used for enabling the male luer connector 21 to clamp the adjusting tube 11, through the above contents, in the process of performing a puncturing operation, a medical worker holds the Y-shaped connector 1 with one hand and holds the male luer connector 21 with the other hand, the adjusting tube 11 is pulled to drive the inner tube 31 to extend and retract on the outer tube 3 by pulling the Y-shaped connector 1, when the Y-shaped connector 1 is pushed to the far end, the length of the inner tube 31 extending out of the outer tube 3 is longer, when the Y-shaped connector 1 is pulled to the near end, the length of the inner tube 31 extending out of the outer tube 3 is shorter, after puncturing to a proper position, the adjusting tube 11 is locked by using the locking structure, so that a puncturing effect is realized, because the inner tube 31 is made of a flexible material, the outer tube 3 is made of a hard material, the outer tube 3 can play a supporting effect on the inner tube 31, and, and the inner tube 31 with better flexibility is made to conform to the bending puncture under a special angle, thereby being convenient for use.
In this embodiment, the inner tube 31 is a three-section structure, and includes a rigid hose 311, a flexible hose 312 and a needle tip 313, the length of the rigid hose 311 is one third of the length of the whole inner tube 31, so that the end of the inner tube 31 is made of a hard material, which provides a good supporting effect for the flexible hose 312, and prevents the inner tube 31 from being unable to penetrate into the tissue of the patient due to insufficient strength.
Through the content, the separated puncture needle not only maintains the required bending performance through the three-section structure of the inner tube and the flexible hose, but also increases the rigidity of the inner tube during axial movement through the hard hose, so that the needle head can smoothly penetrate into tissues to complete collection or injection, and the medical requirement of the puncture needle is met.
Specifically, the proximal end of the flexible hose 312 is fixedly connected with the flexible hose 312 in an adhesion manner, and the distal end of the flexible hose 312 is in insertion fit with the needle tip 313 in an interference fit manner, so that the production is facilitated and the installation is simple and convenient.
It should be noted that the locking structure is a nut 22, the proximal end of the male luer 21 is provided with an expanded end 213, when the adjusting tube 11 is inserted into the male luer 21, the expanded end 213 is contracted by screwing the nut 22, so as to achieve the effect of locking the adjusting tube 11, and the expanded end 213 is in a radial shape through a plurality of notches, so that during the screwing process of the nut 22, the radially expanded end 213 is contracted inwards, and the adjusting tube 11 is clamped and fixed, thereby achieving the locking. Namely, the locking structure of the male luer connector realizes the limiting function of the inner tube during axial movement.
Furthermore, a thread groove 211 is formed in the proximal end of the male luer 21, an external thread 231 is formed in one end of the female luer 23, the female luer 23 is in threaded connection with the thread groove 211 through the external thread 231, the female luer 23 and the male luer 21 can be conveniently connected together through the external thread 231, and the operation is simple and the assembly is convenient.
In addition, a plug tube 212 for improving the sealing effect is arranged in the threaded groove 211, the female luer 23 is in threaded connection in the threaded groove 211 through an external thread 231, the plug tube 212 is plugged at the end of the female luer 23, and the sealing effect at the joint of the female luer 23 and the male luer 21 can be improved by the plug tube 212 in plug fit with the inner wall of the female luer 23.
Specifically, outer tube 3 adopts the polyvinyl chloride material to make, and this material has good wear resistance and corrosion resistance, and the structure is firm, safe and reliable.
Example 2
Fig. 6 and 7 are schematic structural views of a male luer 21 and a locking ring 24 in embodiment 2 of the present invention, and embodiment 2 is an alternative scheme based on embodiment 1, and the difference is that: utilize lock ring 24 to replace nut 22 for lock ring 24 connects and operates on public luer connector 21, the locking operation of adjusting tube 11 is carried out to medical personnel's one hand of being convenient for, as shown in fig. 6 and 7, the locking structure is lock ring 24, the surface both sides of public luer connector 21 all are provided with spout 214, the proximal end of spout 214 is provided with first horizontal groove 2141, the distal end of spout is provided with second horizontal groove 2142, the tip of first horizontal groove 2141 communicates with one end of spout 214, the tip of second horizontal groove 2142 communicates with another tip of spout 214, the inner wall both sides of lock ring 24 all are provided with thread slipping 241, and lock ring 24 slides in spout 214, first horizontal groove 2141 and second horizontal groove 2142 through thread slipping 241.
It is worth to be noted that, the inner walls of the first transverse groove 2141 and the second transverse groove 2142 are both provided with a buckle, when the sliding buckle 241 of the locking ring 24 slides into the first transverse groove 2141, the buckle is fastened and fixed with the sliding buckle 241, at this time, the expansion end 213 is kept in a radial state all the time, and the adjusting tube 111 can be pulled out and pulled out arbitrarily; when the sliding buckle 241 slides into the second transverse groove 2142, the sliding buckle 241 is fastened and fixed by the buckle therein, and at this time, the expanded end 213 keeps the tightened state, and the position of the adjusting tube 111 is locked.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an inner tube of disconnect-type pjncture needle which characterized in that, the inner tube is the syllogic structure, includes: a hard hose, a flexible hose and a needle tip;
the rigidity of the hard hose is greater than that of the flexible hose;
the near end of the flexible hose is fixedly connected with the flexible hose, and the far end of the flexible hose is in inserting fit with the needle point.
2. The inner tube of claim 1, wherein: the near end of the flexible hose is fixedly connected with the flexible hose in a bonding mode, and the far end of the flexible hose is in insertion fit with the needle point in an interference fit mode.
3. A split puncture needle, comprising: a Y-joint, an outer tube, a connection mechanism, an adjustment tube, and the inner tube of claim 1 or 2;
the connecting mechanism comprises a female luer connector and a male luer connector;
the near end of the adjusting tube is connected with the Y-shaped joint, and the far end of the adjusting tube is connected with the inner tube;
the distal end of the female luer connector is connected with the outer tube;
the inner tube is arranged in the outer tube from the proximal end of the female luer connector in a penetrating way;
the female luer connector is detachably connected with the male luer connector, and the male luer connector is positioned on the proximal end side of the female luer connector;
the male luer connector is provided with a locking structure, and the locking structure is used for enabling the male luer connector to clamp the adjusting pipe.
4. A split puncture needle according to claim 3, wherein: the locking structure is the nut, the near-end of public luer connects is provided with the expansion end, when the control tube inserts in public luer connects, through twisting soon the nut makes the expansion end shrink to this realization locking the control tube with the control tube.
5. A split puncture needle according to claim 3, wherein: the locking structure is the lock ring, the surface both sides that public luer connects all are provided with the spout, the near-end of spout is provided with first cross slot, the distal end of spout is provided with the second cross slot, the tip of first cross slot with a tip intercommunication of spout, the tip of second cross slot with another tip intercommunication of spout, the inner wall both sides of lock ring all are provided with the thread slipping, just the lock ring passes through the thread slipping is in slide in spout, first cross slot and the second cross slot.
6. A split puncture needle according to claim 3, wherein: the proximal end of the male luer connector is provided with a thread groove, one end of the female luer connector is provided with an external thread, and the female luer connector is connected in the thread groove through the external thread.
7. A split puncture needle according to claim 6, wherein: the improved female luer connector is characterized in that a plug pipe for improving the sealing effect is arranged in the threaded groove, the female luer connector is connected in the threaded groove through external threads, and meanwhile the plug pipe is plugged at the end of the female luer connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199185.0U CN213430439U (en) | 2020-06-24 | 2020-06-24 | Separated puncture needle and inner tube thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199185.0U CN213430439U (en) | 2020-06-24 | 2020-06-24 | Separated puncture needle and inner tube thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213430439U true CN213430439U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021199185.0U Active CN213430439U (en) | 2020-06-24 | 2020-06-24 | Separated puncture needle and inner tube thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213430439U (en) |
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2020
- 2020-06-24 CN CN202021199185.0U patent/CN213430439U/en active Active
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