CN210250011U - Puncture needle - Google Patents

Abstract

The utility model provides a puncture needle, include: the needle core, the flow guide pipe and the pipe sleeve; the needle core comprises a needle seat and a needle body, and the needle body is vertically arranged on the needle seat; the outer part of the guide pipe is provided with an elastic barb which can be sleeved on the needle body from top to bottom; the sleeve comprises a base and a sleeve body, the sleeve body is vertically arranged on the base, a groove extending along the axial direction is arranged on the inner side of the sleeve body, the elastic barb can be accommodated in the groove, the base is provided with a through hole along the axial direction, and the guide pipe and the needle body can penetrate through the through hole; when the puncture needle is in a first state, the guide tube is sleeved on the needle body in a sliding manner, the sleeve is sleeved outside the guide tube, the elastic barb is accommodated in the groove, the needle body penetrates through the through hole from bottom to top, and the needle seat is abutted against the lower surface of the base; when the puncture needle is in the second state, the guide pipe is separated from the needle core, and the elastic barbs are in the unfolding state. The utility model provides a puncture needle can effectively prevent that the honeycomb duct from droing when using.

Description

Puncture needle

Technical Field

The utility model belongs to a puncture needle, in particular to a cecum puncture needle.

Background

Puncture is a common medical operation term, and is a diagnosis and treatment technology for puncturing a puncture needle into a body cavity to extract secretion for testing, injecting gas or contrast medium into the body cavity for contrast examination, or injecting medicine into the body cavity. The puncture aims at guiding, drawing blood for testing, blood transfusion, fluid infusion, and placing into a catheter for angiography. Cecum puncture is a common diagnosis and treatment means, and the honeycomb duct easily slips out of the cecum in the diversion process at that time, causing secondary puncture.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a puncture needle can prevent effectively that the honeycomb duct from droing when using.

The utility model provides a puncture needle, include: the needle core, the flow guide pipe and the pipe sleeve;

the needle core comprises a needle seat and a needle body, and the needle body is vertically arranged on the needle seat;

the outer part of the guide pipe is provided with an elastic barb which can be sleeved on the needle body from top to bottom;

the sleeve comprises a base and a sleeve body, the sleeve body is vertically arranged on the base, a groove extending along the axial direction is formed in the inner side of the sleeve body, the elastic barb can be accommodated in the groove, the base is provided with a through hole along the axial direction, and the guide pipe and the needle body can penetrate through the through hole;

when the puncture needle is in a first state, the guide tube is sleeved on the needle body in a sliding manner, the sleeve is sleeved outside the guide tube, the elastic barbs are accommodated in the grooves, the needle body penetrates through the through holes from bottom to top, and the needle seat is abutted against the lower surface of the base;

when the puncture needle is in the second state, the flow guide pipe is separated from the needle core, and the elastic barbs are in the unfolding state.

The utility model provides a working principle of pjncture needle as follows: the utility model provides a pjncture needle includes nook closing member, honeycomb duct and pipe box, overlaps the honeycomb duct on the needle body earlier before the use to pass the through-hole from bottom to top from the lower extreme of pipe box base, make the pjncture needle makes up into first state, and the elasticity barb draws in to the direction that is close to the honeycomb duct in to be located the internal side recess of cover. Under the effect of needle body, after driving the honeycomb duct and pierce the cecum of disease, outside pulling pipe box because the needle file of nook closing in is supported and is leaned on the lower extreme of sleeve pipe base, and the sleeve pipe drives the nook closing in outside and removes to remain the honeycomb duct in the thorn position, the back is extracted to the sleeve pipe, and elasticity barb loses sheathed tube confining force, opens to the outside under the effect of elasticity, fixes the honeycomb duct on the cecum, prevents the water conservancy diversion in-process, the honeycomb duct roll-off.

According to the utility model provides an embodiment, elasticity barb is a plurality of, follows the axial arrangement of honeycomb duct. The fixation is increased by a plurality of elastic barbs.

According to the utility model provides an embodiment, the cover body includes a plurality of splint, splint set up along the axial on the base, the recess sets up the inboard of splint forms the interval between the adjacent splint. An interval is formed between the adjacent clamping plates, after the puncture needle is punctured into the cecum, the cecum can be directly contacted with the flow guide sleeve through the interval, and when the pipe sleeve is pulled out, the flow guide sleeve is remained on the cecum through the friction action of the cecum and the flow guide sleeve.

According to the utility model provides an embodiment, the lower surface of base is equipped with the mounting groove, the through-hole is located in the mounting groove, works as when the pjncture needle is in the first state, the needle file is located in the mounting groove to support and lean on the surface at the mounting groove. When being in the first state, the needle file is located in the mounting groove, and supports and leans on the surface of mounting groove, and the lower surface of needle file and the lower surface of base are located the coplanar, convenient operation.

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. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of a first embodiment of a lancet assembly;

FIG. 2 is a schematic view of the structure of the puncture needle with the sheath and the catheter separated according to one embodiment;

FIG. 3 is a schematic structural view of the needle in a second state according to one embodiment;

FIG. 4 is a schematic view of the structure of the hub of the puncture needle according to an embodiment;

fig. 5 is a schematic structural view of a hub of a puncture needle according to another embodiment.

Description of the reference numerals

10-needle core

11-needle stand

12-needle body

20-flow guide pipe

21-elastic barbs

30-pipe sleeve

31-base

32-sleeve body

321-splint

33-through hole

34-mounting groove

35-groove

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Example 1

Referring to fig. 1 to 4, the puncture needle according to the present embodiment includes: a needle core 10, a guide tube 20 and a pipe sleeve 30;

the needle core 10 comprises a needle seat 11 and a needle body 12, and the needle body 12 is vertically arranged on the needle seat 11;

the exterior of the draft tube 20 is provided with an elastic barb 21 which can be sleeved on the needle body 12 from top to bottom;

the tube sleeve 30 comprises a base 31 and a sleeve body 32, the sleeve body 32 is vertically arranged on the base 31, a groove 35 extending along the axial direction is arranged on the inner side of the sleeve body 32, the elastic barb 21 can be accommodated in the groove 35, the base 31 is provided with a through hole 33 along the axial direction, and the guide tube 20 and the needle body 12 can pass through the through hole 33;

when the puncture needle is in a first state, the drainage tube 20 is sleeved on the needle body 12 in a sliding manner, the cannula sleeve 30 is arranged outside the drainage tube 20, the elastic barbs 21 are accommodated in the grooves 35, the needle body 12 penetrates through the through holes 33 from bottom to top, and the needle seat 11 abuts against the lower surface of the base 31;

when the puncture needle is in the second state, the draft tube 20 is separated from the needle core 10, and the elastic barbs 21 are in the unfolding state.

The puncture needle provided by the embodiment comprises a needle core 10, a drainage tube 20 and a pipe sleeve 30, wherein the drainage tube 20 is sleeved on the needle body 12 before use, and penetrates through the through hole 33 from bottom to top from the lower end of the base 31 of the pipe sleeve 30, so that the puncture needle is combined into a first state, and the elastic barbs 21 are gathered towards the direction close to the drainage tube 20 and are positioned in the grooves 35 on the inner side of the sleeve body 32. Under the effect of the needle body 12, after the draft tube 20 is driven to pierce the cecum of a patient, the tube sleeve 30 is pulled outwards, the needle seat 11 of the needle core 10 abuts against the lower end of the tube sleeve base 31, the tube sleeve drives the needle core 10 to move outwards and keeps the draft tube 20 in the piercing position, after the tube sleeve is pulled out, the elastic barbs 21 lose the constraint force of the tube sleeve, the tube sleeve is opened outwards under the action of elastic force, the draft tube 20 is fixed on the cecum, and the draft tube 20 is prevented from slipping out in the process of diversion.

Specifically, the plurality of elastic barbs 21 are arranged along the axial direction of the draft tube 20. The anchoring action is increased by a plurality of elastic barbs 21.

More specifically, the covering 32 includes a plurality of clamping plates 321, the clamping plates 321 are axially disposed on the base 31, and the grooves 35 are disposed on the inner sides of the clamping plates 321 with a space formed between adjacent clamping plates 321. An interval is formed between the adjacent clamping plates 321, after the puncture needle is punctured into the cecum, the cecum can be directly contacted with the flow guide sleeve through the interval, and when the pipe sleeve 30 is pulled out, the flow guide sleeve is left on the cecum through the friction action of the cecum and the flow guide sleeve.

Example 2

Referring to fig. 5, the present embodiment provides a puncture needle, the lower surface of the base 31 is provided with a mounting groove 34, the through hole 33 is positioned in the mounting groove 34, and when the puncture needle is in the first state, the needle holder 11 is positioned in the mounting groove 34 and abuts against the surface of the mounting groove 34.

When the needle seat 11 is in the first state, the needle seat 11 is positioned in the mounting groove 34 and abuts against the surface of the mounting groove 34, and the lower surface of the needle seat 11 and the lower surface of the base 31 are positioned on the same plane, so that the operation is convenient.

In the description of the present application, it is to be understood that the terms "upper", "lower", "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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the specification of the present invention, a large number of specific details are explained. 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.

In the description herein, particular features, structures, materials, or characteristics 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 substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (4)

1. A puncture needle, comprising: a needle core (10), a guide pipe (20) and a pipe sleeve (30);

the needle core (10) comprises a needle seat (11) and a needle body (12), and the needle body (12) is vertically arranged on the needle seat (11);

the exterior of the draft tube (20) is provided with an elastic barb (21) which can be sleeved on the needle body (12) from top to bottom;

the pipe sleeve (30) comprises a base (31) and a sleeve body (32), the sleeve body (32) is vertically arranged on the base (31), a groove (35) extending along the axial direction is formed in the inner side of the sleeve body (32), the elastic barb (21) can be accommodated in the groove (35), a through hole (33) extending along the axial direction is formed in the base (31), and the guide pipe (20) and the needle body (12) can penetrate through the through hole (33);

when the puncture needle is in a first state, the guide tube (20) is sleeved on the needle body (12) in a sliding manner, the sleeve (30) is arranged outside the guide tube (20), the elastic barbs (21) are accommodated in the grooves (35), the needle body (12) penetrates through the through holes (33) from bottom to top, and the needle seat (11) abuts against the lower surface of the base (31);

when the puncture needle is in the second state, the guide tube (20) is separated from the needle core (10), and the elastic barbs (21) are in the unfolding state.

2. A puncture needle according to claim 1, wherein the plurality of elastic barbs (21) are arranged in the axial direction of the catheter (20).

3. The needle of claim 2, wherein the sheath (32) comprises a plurality of cleats (321), the cleats (321) being axially disposed on the base (31), the grooves (35) being disposed on an inner side of the cleats (321), with a space being formed between adjacent cleats (321).

4. A puncture needle according to claim 3, wherein the lower surface of the base (31) is provided with a mounting groove (34), the through hole (33) is located in the mounting groove (34), and the needle holder (11) is located in the mounting groove (34) and abuts against the surface of the mounting groove (34) when the puncture needle is in the first state.

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