CN202437850U

CN202437850U - Indwelling needle

Info

Publication number: CN202437850U
Application number: CN2012200266849U
Authority: CN
Inventors: 汪贤宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-20
Filing date: 2012-01-20
Publication date: 2012-09-19
Anticipated expiration: 2022-01-20

Abstract

An indwelling needle comprises a catheter component, a sleeve and a puncture component; the catheter component comprises a catheter seat and an isolation plug; a sliding chute is formed on the sleeve in the axial direction; the puncture component comprises a needle head base, a needle head and a handle; and the sleeve is provided with a fixing mechanism used for collecting the needle head inside the sleeve and locking the position of the needle head, and the fixing mechanism is a hook-shaped fixing mechanism formed in the forward track of the sliding chute. The indwelling needle provided by the utility model can prevent accidental injury caused by the needle head, and furthermore, the structure is simple, implementation is easy, and the cost is lower.

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 outside is with plastic flexible pipe, and flexible pipe is shorter than syringe needle.During use, syringe needle thrusts vein together with flexible pipe, extracts the metal needle of flexible pipe the inside afterwards gently 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 less patient suffering, 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 abandon or destroy after the metal needle of remaining needle is extracted out from blood vessel, yet because outside needle tip is exposed to,, cause cross infection clearing up, when destroying, being easy to stab medical worker or other people.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 venous detaining needle; Comprise needle tubing sheath, conduit tube component, needle tubing assembly; Wherein: the circumferential surface of base protruding stupefied to outer lug of two of uniform distribution at least at the rear portion of needle stand body; Present groove between the two protruding stupefied adjacent edges, each protruding stupefied lower end is provided with a positioning tooth, also is provided with a protruding cage knob 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; Said 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 through 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 gets into the cage knob sliding tray through the transition breach.

Protruding stupefied, groove, cage knob, positioning tooth, spring, convex location are stupefied through being provided with for above-mentioned venous detaining needle, many parts 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.

Summary of the invention

This utility model technical problem to be solved is can to prevent in the prior art that remaining needle complex structure, parts that syringe needle accidentally injures 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 scheme that this utility model adopts is following:

A kind of remaining needle comprises:

Conduit tube component comprises:

Catheter block comprises the arm of being responsible for and taking shape in the said person in charge's one side, and the inner chamber of the said person in charge and said arm is communicated with, and injection gets into the patient vessel through the said arm and the said person in charge successively;

Batching pig is arranged at the said person in charge's inner chamber, is used for an end and the air insulated of said catheter block away from patient skin; Flexible pipe is arranged at the end of said catheter block near patient skin;

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

Piercing assembly comprises:

Needle mount is arranged at said sleeve inner and can telescopicly axially moves back and forth along said, and said needle mount forms the hands handle that stretches out said sliding tray;

Syringe needle; Be fixed on the end of said needle mount near said conduit tube component; The external diameter of said syringe needle cooperates with the internal diameter of said flexible pipe, and the tip of said syringe needle is suitable for passing said batching pig and stretches out said catheter block and get into said flexible pipe, and stretches out the puncture patient skin from said flexible pipe;

Said sleeve has that the tip that is used for said syringe needle is contained in the said sleeve and with the fixed mechanism of said needle position locking, and said fixed mechanism is to take shape in the said sliding tray hook fixed mechanism on the track of advancing.

Above-mentioned remaining needle, said hook fixed mechanism are to take shape in the said sliding tray barb on the track of advancing, and the gib head of said barb is dorsad in the puncture direction and be suitable for catching on said handle and stop said syringe needle to move along the puncture direction.

Above-mentioned remaining needle, the back side of said gib head are arc.

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

Above-mentioned remaining needle; Said hook fixed mechanism is to take shape in the said sliding tray stopper slot on the track of advancing; The protruding transition of screens through relative molding between said stopper slot and the said sliding tray; Said screens convexity is dorsad in the hook-type of puncture direction away from the part of said conduit tube component, is suitable for catching on said handle and stops said syringe needle to move along the puncture direction.

Above-mentioned remaining needle, said screens convexity is intilted plane near the part of said conduit tube component.

Above-mentioned remaining needle, said stopper slot take shape in the position of said sliding tray away from said conduit tube component.

The technique scheme of this utility model is compared prior art and is had the following advantages:

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

2. the remaining needle of this utility model, hook fixed mechanism are to take shape in the sliding tray barb on the track of advancing, and the gib head of barb is dorsad in the puncture direction and be suitable for catching on handle and stop syringe needle to move along the puncture direction, and the back side of gib head is arc.After the piercing assembly of remaining needle is used to complete; The medical worker extracts piercing assembly and sleeve together; Make piercing assembly when the sleeve sliding tray slides and touch the back side of barb gib head through operating grip again, continue the application of force, the arc design at the gib head back side makes barb elastic deformation take place receiving this external compression masterpiece time spent; Open the formation path, make piercing assembly can pass through gib head smoothly; When piercing assembly through behind the barb, extruding force disappears, the barb shape that resiles is closed path; And block path in the gib head of puncture direction dorsad towards the 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 need move to corresponding collecting position with piercing assembly and get final product, and does not have other technologies operation requirement, and is simple to operate, is easy to realize.

3. the remaining needle of this utility model; The hook fixed mechanism is to take shape in the sliding tray stopper slot on the track of advancing; The protruding transition of screens through relative molding between stopper slot and the sliding tray; The screens convexity is dorsad in the hook-type of puncture direction away from the part of conduit tube component, is suitable for catching on handle and stops syringe needle to move along the puncture direction.Similar with the hook fixed mechanism of overhead structure; After the piercing assembly of remaining needle is used to complete; The medical worker extracts piercing assembly and sleeve together, makes piercing assembly slide and touch the protruding inclined ramp of screens along the sleeve sliding tray through operating grip again, and the screens convexity receives external force; Make the protruding deformation formation path that takes place of screens, after external force disappears, restore to the original state and close path; Compare with overhead structure, the protruding and telescopic coupling part broad of screens receives not easy fracture of external force.

4. the remaining needle of this utility model, the screens convexity is intilted plane near the part of conduit tube component.When the direction that punctures dorsad at piercing assembly is touched the screens convexity; Piercing assembly increases to the protruding externally applied forces of screens gradually; The screens convexity can not rupture because receiving big external force suddenly, has prevented that the situation that causes accommodating syringe needle takes place because sleeve is damaged.

Description of drawings

For the content that makes this utility model is more clearly understood,, this utility model is done further detailed explanation, wherein below according to the specific embodiment of this utility model and combine accompanying drawing

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

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

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

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

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

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

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

Figure 10 is the sleeve sketch map of this utility model remaining needle embodiment two.

Reference numeral is expressed as among the figure: the 1-conduit tube component, and the 11-catheter block, 111-is responsible for, 112-arm, 12-batching pig, 13-flexible pipe; The 2-sleeve, 21-sliding tray, 22-barb, 221-gib head, 23-stopper slot; The 231-screens is protruding, 3-piercing assembly, 31-handle, 32-needle mount, 33-syringe needle.

The specific embodiment

Embodiment one

As shown in Figure 1, be the preferred embodiment of this utility model remaining needle.Said remaining needle comprises: conduit tube component 1, piercing assembly 3 and sleeve 2.

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

Said catheter block 11 comprises the person in charge 111 and the arm 112 that takes shape in the said person in charge's 111 1 sides, and the inner chamber of the said person in charge 111 and said arm 112 is communicated with, and injection gets into patient vessels through the said arm 112 and the said person in charge 111 successively.

Said batching pig 12 is arranged at the said person in charge's 111 inner chamber; Be used for an end and the air insulated of said catheter block 11 away from patient skin; And said batching pig 12 the connected entrance that the position gets out of the way said arm 112 and the said person in charge 111 is set; Said batching pig 12 expansible after receiving the puncture force effect forms path, and after puncture force disappears, can close path automatically, air-isolation.In the present embodiment, said batching pig 12 is cylindrical, and is processed by the elastomer macromolecule medical material.

Said flexible pipe 13 is arranged at the end of said catheter block 11 near patient skin.In the present embodiment, said flexible pipe 13 is a transparent hose, and the medical worker can observe the blood back situation easily in piercing process.

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

It is inner and can axially moving back and forth along said sleeve 2 that said needle mount 32 is arranged at said sleeve 2.Said needle mount 32 forms handle 31, and said handle 31 stretches out outside the said sleeve 2, is convenient to medical worker's operation.

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

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

In the present embodiment, said hook fixed mechanism is to take shape in said sliding tray 21 barb 22 on the track of advancing, and the gib head 221 of said barb 22 is dorsad in the puncture direction and be suitable for catching on said handle 31 and stop said syringe needle 33 to move along the puncture directions.Said gib head 221 takes shape in the position of said sliding tray 21 away from said conduit tube component 1, and the back side of said gib head 221 is arc.

Shown in Fig. 6-9; After said syringe needle 33 is withdrawed from the puncture completion; The medical worker extracts said piercing assembly 3 with said sleeve 2; Make said piercing assembly 3 puncture direction dorsad when said sliding tray 21 slides and touch said gib head 221 back sides of said barb 22 through operating said handle 31 again, external force is continued to apply in 3 pairs of said gib heads of said piercing assembly, 221 back sides, and the arc design at said gib head 221 back sides makes said barb 22 when receiving this extruding force, produce elastic deformation; Open the formation path, make said piercing assembly 3 can pass through said gib head 221 smoothly; When said piercing assembly 3 through behind the said barb 22, extruding force disappears, said barb 22 shape that resiles is closed path, said barb 22 is limited in the design section of said sliding tray 21 with said handle 31, this moment, said syringe needle 33 was housed in the said sleeve 2.Because 221 designs of said gib head are towards being dorsad in the puncture direction; Can block the path that moves to the puncture direction; Stop said piercing assembly 3 to move towards the puncture direction again,, thereby prevent to be stabbed by the needle tip mistake even said sleeve 2 can not stretched out again in the tip of the said syringe needle 33 of maloperation yet.

Embodiment two

Shown in figure 10, be another embodiment of this utility model.The difference of present embodiment and embodiment one is the structure of hook fixed mechanism.

In the present embodiment, said hook fixed mechanism is to take shape in said sliding tray 21 stopper slot 23 on the track of advancing, and in the present embodiment, said stopper slot 23 takes shape in the position of said sliding tray 21 away from said conduit tube component 1.Protruding 231 transition of screens through relative molding between said stopper slot 23 and the said sliding tray 21; Protruding 231 parts away from said conduit tube component 1 of said screens be dorsad in the hook-type of puncture direction, are suitable for catching on said handle 31 and stop said syringe needle 33 to move along the directions that puncture.In the present embodiment, said screens protruding 231 has two, is molded over said sliding tray 21 symmetric both sides respectively, and the hook portion of two said screens protruding 231 is oppositely arranged.

Protruding 231 parts near said conduit tube component 1 of said screens are intilted plane, and said conduit tube component 1 can be slided smooth-goingly, and finally through said screens protruding 231.

In the present embodiment, medical worker's operating procedure is identical with embodiment one, and the process that said hook fixed mechanism locks said syringe needle 33 is also similar.After said piercing assembly 3 is used to complete; The medical worker extracts said piercing assembly 3 with said sleeve 2 together; Through operating the inclined ramp that said handle 31 makes said piercing assembly 3 slide and touch said screens protruding 231 along said sliding tray 21, said screens protruding 231 receives external force again, makes said screens protruding 231 that deformation take place and forms path; Said handle 31 through said screens protruding 231 after; External force disappears, and said sleeve 2 restores to the original state and closes path, realizes the position-limiting action to said syringe needle 33.

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

In other embodiments, said flexible pipe 13 can be nontransparent flexible pipe, though the medical worker can't not influence the realization that this uses novel purpose through observing flexible pipe check blood back in the process of puncture.

In other embodiments, the number of said screens protruding 231 can be one, can realize the purpose of this utility model equally.

In other embodiments, protruding 231 parts near said conduit tube component 1 of said screens can also be intilted convex surface, can realize the purpose of this utility model equally.

In other embodiments, said stopper slot 23 can also take shape in other positions of said sliding tray 21, as long as this position can guarantee the tip of said syringe needle 33 is accommodated and is locked in the said sleeve 2, can realize the purpose of this utility model.

Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of this utility model creation.

Claims

1. remaining needle comprises:

Conduit tube component (1) comprising:

Catheter block (11); Comprise the person in charge (111) and take shape in the arm (112) of the said person in charge's (111) one sides; The inner chamber of the said person in charge (111) and said arm (112) is communicated with, and injection gets into the patient vessel through the said arm (112) and the said person in charge (111) successively;

Batching pig (12) is arranged at the inner chamber of the said person in charge (111), is used for an end and the air insulated of said catheter block (11) away from patient skin; Flexible pipe (13) is arranged at the end of said catheter block (11) near patient skin;

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

Piercing assembly (3) comprising:

Needle mount (32), it is inner and can be along axially the moving back and forth of said sleeve (2) to be arranged at said sleeve (2), and said needle mount (32) forms the handle (31) that stretches out said sliding tray (21);

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

It is characterized in that,

Said sleeve (2) has that the tip that is used for said syringe needle (33) is contained in the said sleeve (2) and with the fixed mechanism of said syringe needle (33) locking position, and said fixed mechanism is for taking shape in said sliding tray (21) the hook fixed mechanism on the track of advancing.

2. remaining needle according to claim 1; It is characterized in that: said hook fixed mechanism is for taking shape in said sliding tray (21) barb (22) on the track of advancing, and the gib head (221) of said barb (22) is dorsad in the puncture direction and be suitable for catching on said handle (31) and stop said syringe needle (33) to move along the puncture direction.

3. remaining needle according to claim 2 is characterized in that: the back side of said gib head (221) is arc.

4. remaining needle according to claim 3 is characterized in that: said gib head (221) takes shape in the position of said sliding tray (21) away from said conduit tube component (1).

5. remaining needle according to claim 1; It is characterized in that: said hook fixed mechanism is for taking shape in said sliding tray (21) stopper slot (23) on the track of advancing; Protruding (231) transition of screens through relative molding between said stopper slot (23) and the said sliding tray (21); Said screens protruding (231) be dorsad in the hook-type of puncture direction away from the part of said conduit tube component (1), is suitable for catching on said handle (31) and stops said syringe needle (33) to move along the direction that punctures.

6. remaining needle according to claim 5 is characterized in that: said screens protruding (231) is intilted plane near the part of said conduit tube component (1).

7. remaining needle according to claim 6 is characterized in that: said stopper slot (23) takes shape in the position of said sliding tray (21) away from said conduit tube component (1).