CN202724363U

CN202724363U - Remaining needle

Info

Publication number: CN202724363U
Application number: CN 201220294651
Authority: CN
Inventors: 万智勇; 万智红
Original assignee: HENAN SHUGANG JIANSHI MEDICAL DEVICES GROUP CO Ltd
Current assignee: Henan Shuguang Jianshi Industrial Development Co ltd
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2013-02-13
Anticipated expiration: 2022-06-21

Abstract

A remaining needle comprises a conduit component, a sleeve and a puncturing component, wherein the conduit component comprises a conduit base and a batching plug. A sliding groove is formed in the sleeve along the axial direction. The puncturing component comprises a needle head base, a needle head, and a handle. A fixing structure in the sleeve is used for containing the needle head into the sleeve and locking the position of the needle head. The fixing structure is formed by a hook-shaped fixing structure on the sliding groove processing track. The remaining needle is capable of preventing accidental injuries caused by the needle head, simple in structure, easy to achieve, and low in cost.

Description

A kind of remaining needle

Technical field

This utility model relates to medical apparatus and instruments articles for use technical field, particularly a kind of remaining needle.

Background technology

Remaining needle is a kind of venous entry needle of fixing, and its metal needle outer cover has plastic flexible pipe, and flexible pipe is shorter than syringe needle.During use, syringe needle thrusts vein together with flexible pipe, extracts gently afterwards the metal needle of flexible pipe the inside out, only plastic flexible pipe is stayed and is carried out injecting liquid drug in the blood vessel.Use the remaining needle can the repeated localised puncture blood vessel, can protect vein, alleviate patient's misery, needing to be particularly suitable for transfusion every day or to be getting in years good patient of vascular quality.

Just become the hospital refuse that need to abandon or destroy after the metal needle of remaining needle is extracted out from blood vessel, yet because outside needle tip is exposed to, clearing up, when destroying, being easy to stab medical worker or other people, cause cross infection.Therefore, be provided with protective sleeve on the remaining needle of prior art, guarantee that syringe needle does not expose, prevent that the medical worker from being accidentally injured by syringe needle, causes cross infection.

Prior art such as Chinese patent CN101934103A disclose a kind of safety-type vein remaining needle, comprise needle tube sheath, conduit tube component, needle tubing assembly, wherein: at the circumferential surface of the rear portion of needle stand body base two outwards projection protruding stupefied that at least evenly distribute, present groove between the two protruding stupefied adjacent edges, each protruding stupefied lower end is provided with a positioning tooth, also is provided with the cage knob of a projection on one of them protruding stupefied protruding top; The puncture needle tubing is installed on the anterior needle stand central authorities of needle stand body front end; Described barrel front end is provided with spring base, and cylindrical shell front inner wall convex location is stupefied; Also be provided with parallel cage knob locating slot and cage knob sliding tray on the cylindrical shell, their front end is communicated with each other by the transition breach, is provided with the covering storehouse of blocking cage knob at cage knob sliding tray end; Barrel tip is provided with end plug; During assembling, an end of spring is positioned at spring base, and the other end is butted on the rear portion base of needle stand body; Cage knob is arranged in the cage knob locating slot or enters the cage knob sliding tray by the transition breach.

Protruding stupefied, groove, cage knob, positioning tooth, spring, convex location are stupefied by arranging for above-mentioned venous detaining needle, all multi-part and the structures such as groove, cage knob sliding tray, remain silent sliding tray, cage knob locating slot, transition breach and end plug of two convexes location between stupefied, realization is accommodated needle tubing to cylindrical shell, more and the complex structure of parts, operation is various during manufacturing, cost is higher.

The utility model content

Technical problem to be solved in the utility model is can to prevent in the prior art that the containing needle structure that syringe needle accidentally injures is complicated, parts are many, manufacturing cost is higher, and provide a kind of can prevent that syringe needle from accidentally injuring and simple in structure, be easy to realization, lower-cost remaining needle.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:

A kind of remaining needle comprises:

Conduit tube component comprises

Catheter block comprises the arm of being responsible for and taking shape in described supervisor's one side, and the inner chamber of described supervisor and described arm is communicated with, and injection enters the patient vessel by described arm and described supervisor successively;

Batching pig is arranged at described supervisor's inner chamber, is used for an end and the air insulated of described catheter block away from patient skin;

Flexible pipe is suitable for inserting in the patient body under the guiding of piercing assembly, and described flexible pipe is arranged at described catheter block away from an end of described batching pig;

Sleeve is pegged graft away from an end of patient skin with described conduit tube component, and described sleeve axially forms sliding tray along it;

Described piercing assembly comprises:

Needle mount is arranged at described sleeve inner and can moves along the axial reciprocating of described sleeve, and described needle mount forms the hands handle that stretches out described sliding tray;

Syringe needle, be fixed on described needle mount near an end of described conduit tube component, the external diameter of described syringe needle cooperates with the internal diameter of described flexible pipe, and the tip of described syringe needle is suitable for passing described batching pig and stretches out described catheter block and enter described flexible pipe, and from described flexible pipe extending puncture patient skin;

Described sleeve has for the tip with described syringe needle and is contained in the described sleeve and with the fixed mechanism of described needle position locking, described fixed mechanism is to take shape in advance hook fixed mechanism on the track of sliding tray, described hook fixed mechanism is to take shape in advance barb on the track of described sliding tray, the gib head of described barb back on the puncture direction and be suitable for hooking described handle stop described syringe needle along the puncture direction move, described barb near the puncture direction the surface be a plane.

Above-mentioned remaining needle, described gib head take shape in described sliding tray away from the position of described conduit tube component.

Technique scheme of the present utility model has the following advantages compared to existing technology:

1. remaining needle of the present utility model comprises conduit tube component, sleeve and piercing assembly, sleeve have for needle container in sleeve and with the fixed mechanism of needle position locking, fixed mechanism is to take shape in advance hook fixed mechanism on the track of sliding tray.The hook fixed mechanism can be locked in sleeve inner with the tip of syringe needle, even someone has touched discarded remaining needle carelessly, can do not stabbed by syringe needle yet, effectively prevent from accidentally injuring, avoiding causing cross infection, thereby guaranteed the safety of discarded remaining needle processing procedure; And hook fixed mechanism simple in structure can be one-body molded with sleeve, easy to process during manufacturing, reduces production costs.

2. remaining needle of the present utility model, hook fixed mechanism are to take shape in advance barb on the track of sliding tray, and the gib head of barb is back on the puncture direction and be suitable for hooking handle and stop syringe needle to move along the puncture direction.After the piercing assembly of remaining needle is used to complete, the medical worker extracts piercing assembly and sleeve together, when making piercing assembly along the slip of sleeve sliding tray and touching the back side of barb gib head by operating grip again, continue the application of force, barb is being subject to this external compression masterpiece time spent generation elastic deformation, open the formation path, make piercing assembly can pass through smoothly gib head; When piercing assembly by behind the barb, extruding force disappears, the barb shape that resiles is closed path; And block path towards the puncture direction back on the gib head of puncture direction, stop piercing assembly to move towards the puncture direction again, thus with needle locking in sleeve.In whole process, the medical worker only needs that piercing assembly is moved to corresponding collecting position and gets final product, and does not have the other technologies operation requirements, and is simple to operate, is easy to realize.

Description of drawings

For content of the present utility model is more likely to be clearly understood, the below is described in further detail this utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings

Fig. 1 is the sketch map of this utility model embodiment;

Fig. 2 is the conduit tube component sketch map of this utility model embodiment;

Fig. 3 is the piercing assembly sketch map of this utility model embodiment;

Fig. 4 is the sleeve sketch map of this utility model embodiment;

Fig. 5 is the right view of Fig. 4;

Fig. 6 is the piercing assembly of this utility model embodiment and the operating position sketch map after the sleeve combination;

Fig. 7 is the right view of Fig. 6;

Fig. 8 is the piercing assembly of this utility model embodiment and the collecting position sketch map after the sleeve combination;

Fig. 9 is the right view of Fig. 8.

Reference numeral is expressed as among the figure: 1-conduit tube component, 11-catheter block, 111-supervisor, 112-arm, 12-batching pig, the 13-flexible pipe, 14-connector, 2-sleeve, 21-sliding tray, 22-barb, the 221-gib head, 3-piercing assembly, 31-handle, 32-needle mount, 33-syringe needle.

The specific embodiment

Remaining needle of the present utility model, as shown in Figure 1, described remaining needle comprises: conduit tube component 1, piercing assembly 3 and sleeve 2.

As shown in Figure 2, described conduit tube component 1 comprises catheter block 11, batching pig 12, flexible pipe 13 and connector 14.

Described catheter block 11 comprises supervisor 111 and takes shape in the arm 112 of described supervisor's 111 1 sides, the inner chamber connection of described supervisor 111 and described arm 112, and injection enters the patient vessel by described arm 112 and described supervisor 111 successively.

Described batching pig 12 is arranged at described supervisor's 111 inner chamber, be used for an end and the air insulated of described catheter block 11 away from patient skin, and the setting position of described batching pig 12 gets out of the way described arm 112 and described supervisor's 111 connected entrance, described batching pig 12 expansible after being subject to the puncture force effect forms path, and can the autoshutdown path after puncture force disappears, air-isolation.As a kind of embodiment, described batching pig 12 is cylindrical, and is made by the elastomer macromolecule medical material.

Described flexible pipe 13 is arranged at described catheter block 11 near an end of patient skin.As a kind of embodiment, described flexible pipe 13 is transparent hose, and the medical worker can observe the blood back situation easily in piercing process.

Described connector 14 is used for described catheter block 11 and described flexible pipe 13 are tightly connected, and as a kind of embodiment, described connector 14 is metal material.

As shown in Figure 3, described piercing assembly 3 comprises needle mount 32 and syringe needle 33.

Described needle mount 32 is arranged at described sleeve 2 inside and can moves along the axial reciprocating of described sleeve 2.Described needle mount 32 forms handle 31, and described handle 31 stretches out outside the described sleeve 2, is convenient to medical worker's operation.

Described syringe needle 33 is fixed on described needle mount 32 near an end of described conduit tube component 1, the external diameter of described syringe needle 33 cooperates with the internal diameter of described flexible pipe 13, the tip of described syringe needle 33 is suitable for passing described batching pig 12 and stretches out described catheter block 11 and enter described flexible pipe 13, and stretches out the puncture patient skin from described flexible pipe 13.

Shown in Fig. 4-5, described sleeve 2 is pegged graft away from an end of patient skin with described conduit tube component 1, and described sleeve 2 axially forms sliding tray 21 along it, and described handle 31 passes described sliding tray 21 and stretches out described sleeve pipe 2.Described sleeve 2 has for the tip with described syringe needle 33 and is contained in the described sleeve 2 and with the fixed mechanism of described syringe needle 33 locking positions, and described fixed mechanism is to take shape in advance hook fixed mechanism on the track of described sliding tray 21.

As a kind of embodiment, described hook fixed mechanism is to take shape in advance barb 22 on the track of described sliding tray 21, and the gib head 221 of described barb 22 is back on the puncture direction and be suitable for hooking described handle 31 and stop described syringe needle 33 to move along the puncture directions.Described gib head 221 takes shape in described sliding tray 21 away from the position of described conduit tube component 1, and the surface of described barb 22 close puncture directions is a plane.

Shown in Fig. 6-9, when puncture finish withdraw from described syringe needle 33 after, the medical worker extracts described piercing assembly 3 with described sleeve 2, make described piercing assembly 3 puncture dorsad direction when described sliding tray 21 slides and touch described gib head 221 back side of described barb 22 by operating described handle 31 again, external force is continued to apply in 3 pairs of described gib heads of described piercing assembly, 221 back sides, described barb 22 produces elastic deformation when being subject to this extruding force, open the formation path, make described piercing assembly 3 can pass through smoothly described gib head 221; When described piercing assembly 3 by behind the described barb 22, extruding force disappears, described barb 22 shape that resiles is closed path, described barb 22 is limited in the design section of described sliding tray 21 with described handle 31, this moment, described syringe needle 33 was housed in the described sleeve 2.Because 221 designs of described gib head are towards back on the puncture direction, can block the path that moves to the puncture direction, stop described piercing assembly 3 to move towards the puncture direction again, even described sleeve 2 can not stretched out again in the tip of the described syringe needle 33 of maloperation, thereby prevent from being stabbed by the needle tip mistake yet.

In other embodiments, described batching pig 12 can be spherical or other shapes, and the material of described batching pig 12 also can consist of with other elasticity macromolecular materials, as long as when described syringe needle 33 leaves described batching pig 12, described batching pig can rely on self elasticity to guarantee that described catheter block 11 away from the sealing effectiveness of an end of patient skin, can realize the purpose of this utility model.

In other embodiments, described flexible pipe 13 can be nontransparent flexible pipe, although the medical worker can't by observing flexible pipe check blood back, not affect the realization of this utility model purpose in the process of puncture.

In other embodiments, described connector 14 can also be macromolecular material, can realize the purpose of this utility model equally.

Above-described embodiment only is used for the usefulness of explanation this utility model; be not to restriction of the present utility model; under the guidance of this utility model connotation, also can make corresponding distortion and modification, so all technical schemes that are equal to all belong to protection category of the present utility model.

Claims

1. remaining needle comprises:

Conduit tube component (1) comprises

Catheter block (11), comprise supervisor (111) and take shape in the arm (112) of described supervisor's (111) one sides, the inner chamber of described supervisor (111) and described arm (112) is communicated with, and injection enters the patient vessel by described arm (112) and described supervisor (111) successively;

Batching pig (12) is arranged at the inner chamber of described supervisor (111), is used for an end and the air insulated of described catheter block (11) away from patient skin;

Flexible pipe (13) is suitable for inserting under the guiding of piercing assembly (3) and keeping somewhere in the patient body, and described flexible pipe (13) is arranged at described catheter block (11) away from an end of described batching pig (12);

Sleeve (2) is pegged graft away from an end of patient skin with described conduit tube component (1), and described sleeve (2) axially forms sliding tray (21) along it;

Described piercing assembly (3) comprising:

Needle mount (32), it is inner and can move along the axial reciprocating of described sleeve (2) to be arranged at described sleeve (2), and described needle mount (32) forms the handle (31) that stretches out described sliding tray (21);

Syringe needle (33), be fixed on described needle mount (32) near an end of described conduit tube component (1), the external diameter of described syringe needle (33) cooperates with the internal diameter of described flexible pipe (13), the tip of described syringe needle (33) is suitable for passing described batching pig (12) and stretches out described catheter block (11) and enter described flexible pipe (13), and stretches out the puncture patient skin from described flexible pipe (13);

It is characterized in that,

Described sleeve (2) has for the tip with described syringe needle (33) and is contained in the described sleeve (2) and with the fixed mechanism of described syringe needle (33) locking position, described fixed mechanism is for taking shape in advance hook fixed mechanism on the track of described sliding tray (21), described hook fixed mechanism is for taking shape in advance barb (22) on the track of described sliding tray (21), the gib head (221) of described barb (22) back on the puncture direction and be suitable for hooking described handle (31) stop described syringe needle (33) along the puncture direction move, described barb (22) near the puncture direction the surface be a plane.

2. remaining needle according to claim 1, it is characterized in that: described gib head (221) takes shape in described sliding tray (21) away from the position of described conduit tube component (1).