CN205903491U - Secure venous indwelling needle - Google Patents

Abstract

The utility model provides a secure venous indwelling needle, is including keeping somewhere soft needle, puncture steel needle, handle and handle seat. The handle stationary ladle is drawn together handle seat body, is kept somewhere soft needle file, a pair of front rail and a pair of rear rail. Handle seat body bottom surface is equipped with central spout, it is continuous with the front end of handle seat body to keep somewhere soft needle file. A pair of front rail's preceding part is continuous with the both sides of handle seat body respectively, and a pair of front rail's back part leaves the clearance with the both sides of handle seat body respectively, a pair of rear rail is continuous with the both sides of handle seat body respectively. The handle includes steel needle seat portion and handle body, steel needle seat portion establishes in the central spout of handle seat body, the handle body is equipped with a pair of spout that link up, when the handle was in initial position, this is a pair of to link up the spout setting on a pair of front rail, when the handle is in latched position, a pair ofly link up the spout setting on a pair of rear rail, puncture steel needle needle point is hidden in the central through hole of keeping somewhere soft needle file. The utility model has the advantages of small in quantity, the simple structure of part.

Description

Safe type venous retaining needle

Technical field

This utility model is related to venous detaining needle.

Background technology

Existing safe type venous retaining needle is made up of helmet, the soft pin of venous indwelling, puncture needle, draw point seat, needle guard etc.. During Clinical practice, helmet is taken off, puncture needle leads the soft pin of venous indwelling to enter the vein blood vessel of human body.After seeing blood back, Confirm venipuncture success, puncture needle is extracted out, and only soft for the venous indwelling of made of soft pin is retained in vein blood vessel. The soft pin of venous indwelling can use within the human vein secured location time, so avoid frequently to puncture and cause pain to patient Bitter.Safe type venous retaining needle complete puncture after, by sliding backward handle and by handle locking in a default locking bit Put, the needle point of puncture needle can be made stably to be hidden in the center in the hole of needle guard, thus avoiding discarded exposed puncture needle to make The accidental injury of medical personnel and patient and infection in pairs, affects public safety.

Existing safe type venous retaining needle has the shortcomings of number of parts is many, handle lock structure is complicated, thus giving Manufacture is made troubles.

Content of the invention

Technical problem to be solved in the utility model is to provide that a kind of number of parts is few, the simple safety of structure is quiet Vein.

For solving above-mentioned technical problem, this utility model be the technical scheme is that

A kind of safe type venous retaining needle, including the soft pin of indwelling, puncture needle, handle and handle set；The soft needle set of indwelling There is central through hole；Handle is slippingly arranged on handle set, and can sliding between initial position and latched position；Wherein, Handle set includes handle set body, indwelling soft needle seat, a pair of fromer rail and a pair of rear rail；The bottom surface of handle set body is provided with edge The center chute that handle set body axial direction extends；Indwelling soft needle seat is connected with the front end of handle set body, indwelling soft needle seat It is provided with central through hole, the soft needle guard of indwelling is located on indwelling soft needle seat；A pair of fromer rail is separately positioned on the both sides of handle set body, The previous section of a pair of fromer rail is connected with the both sides of handle set body respectively, the aft section of a pair of fromer rail respectively with handle Gap is left in the both sides of seat body；A pair of rear rail is disposed on the rear of a pair of fromer rail, and respectively with handle set body Both sides be connected；Handle includes draw point portions and handle body；Draw point portions are connected with handle body, and are slippingly arranged on In the center chute of handle set body, puncture needle is fixed in draw point portions；Handle body is provided with a pair along handle body axle The insertion chute extending to direction；When handle is in initial position, before a pair of insertion chute of handle body is arranged on a pair On guide rail, puncture needle passes through the central through hole of indwelling soft needle seat and the soft pin of indwelling；When handle is in the locked position, handle is originally A pair of insertion chute of body is arranged on a pair of rear rail, and the needle point of puncture needle is hidden in the central through hole of indwelling soft needle seat.

This utility model at least has the advantages that

1st, number of parts of the present utility model few it is easier to manufacture, also reduce manufacturing cost simultaneously；

2nd, the aft section of a pair of fromer rail by leaving gap with handle set body both sides for this utility model plays resistance Only handle is returned to the effect of initial position by latched position, so that it is guaranteed that in handle when being in the locked position puncture needle Needle point is built in the central through hole of needle guard completely, it is to avoid needle point exposes；Due to not needing to arrange special lockhole and dead bolt Deng part, therefore structure is simpler, and manufacture is also easier to；

3rd, blood back of the present utility model is observed chamber and is provided with ventilative blocking solution plug, can make blood back observe the gas pressure of intracavity with big Air pressure is basically identical, and the blood back producing during puncture is easier to enter into blood back observation chamber.

Brief description

Fig. 1 is the three-dimensional exploded view of the safe type venous retaining needle according to this utility model one embodiment；

Fig. 2 is the front view of the safe type venous retaining needle according to this utility model one embodiment, and wherein, handle is in just Beginning position；

Fig. 3 and Fig. 4 is left view and the right view of Fig. 2 respectively；

Fig. 5 is the top view of Fig. 2；

Fig. 6 is the a-a line sectional view of Fig. 5；

Fig. 7 is the front view of the safe type venous retaining needle according to this utility model one embodiment, and wherein, handle is in lock Positioning is put；

Fig. 8 is the right view of Fig. 7；

Fig. 9 is the top view of Fig. 7；

Figure 10 is the a-a line sectional view of Fig. 9.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is described in further detail.

Fig. 1 is the three-dimensional exploded view of the safe type venous retaining needle according to this utility model one embodiment；Fig. 2 to Fig. 6 makes Go out safe type venous retaining needle according to this utility model one embodiment structural representation when handle is in initial position. As shown in Figures 1 to 6, include helmet 1, the soft pin of indwelling 2, wear according to the safe type venous retaining needle of this utility model one embodiment Thorn draw point 3, handle 4 and handle set 5.

The soft pin of indwelling 2 has central through hole 20.

Handle set 5 includes handle set body 51, indwelling soft needle seat 52, a pair of fromer rail 53 and a pair of rear rail 54.Handle The bottom surface of seat body 51 is provided with the center chute 510 extending along handle set body 51 axial direction.Indwelling soft needle seat 52 and handle The front end of seat body 51 is connected, and indwelling soft needle seat 52 is provided with central through hole 520, and the soft pin of indwelling 2 is set on indwelling soft needle seat 52. A pair of fromer rail 53 is separately positioned on the both sides of handle set body 51, the previous section 531 of a pair of fromer rail 53 respectively with handle The both sides of seat body 51 are connected, and the aft section 532 of a pair of fromer rail leaves gap with the both sides of handle set body 51 respectively.One Rear rail 54 is disposed on the rear of a pair of fromer rail 53, and is connected with the both sides of handle set body 51 respectively.

Handle 4 includes draw point portions 41 and handle body 42.Draw point portions 41 are connected with handle body 42, and slippingly It is arranged in the center chute 510 of handle set body.Puncture needle 3 is fixed in draw point portions 41.Handle body 42 is provided with one To the insertion chute 420 extending along handle body axial direction.In the present embodiment, handle body 42 include base portion 421 with And a pair of Handheld Division 422.Draw point portions 41 are arranged on the top of base portion 421, and are connected with base portion 421.A pair of Handheld Division 422 both sides being located at base portion 421 respectively, and be connected with base portion 421.A pair of insertion chute 420 is arranged on a pair of Handheld Division On 422 medial surface.

When handle 4 is in initial position, a pair of insertion chute 420 of handle body 42 is arranged on a pair of fromer rail 53 On, puncture needle 3 passes through the central through hole 520 of indwelling soft needle seat 52 and the central through hole 20 of the soft pin of indwelling 2, then is covered with helmet 1 Live.

During puncture, take off helmet 1, lead the soft pin of indwelling 2 to enter human vein blood vessel by puncture needle 3.Complete to puncture Afterwards, slide backward handle 3 along a pair of fromer rail 53, draw back puncture needle 3.A pair of insertion chute 420 when handle body 42 Slide into a pair of fromer rail aft section 532 when, inward pressure can be applied to the aft section 532 of a pair of fromer rail, make The aft section 532 of a pair of fromer rail is close to the side wall of handle set body 51.

When a pair of insertion chute 420 of handle body 42 slides on a pair of rear rail 54, after a pair of fromer rail Part 532, because being no longer influenced by the extruding of insertion chute, can outwards eject under the elastic force effect of itself and restore to the original state, now a pair The aft section 532 of fromer rail leaves gap with the both sides of handle set body 51 respectively, and handle is because by this pair of fromer rail The stop of aft section 532 and cannot slide into again on a pair of fromer rail 53 so that handle 4 is in the locked position, now, puncture The needle point of draw point 3 is hidden in the central through hole 520 of indwelling soft needle seat 52, as shown in Figure 7 to 10.

Further, the rear end of handle set 5 is provided with the stopper section stoping handle 4 from sliding backward, to prevent handle 4 from handle Seat 5 slippage, makes handle 4 be held stably in latched position.In the present embodiment, stopper section is arranged on a pair of rear rail 54 On, stopper section is to be arranged at the rear end side of a pair of rear rail 54 outwardly projection 541.

Because puncture needle 3 is locked in the central through hole 520 of indwelling soft needle seat 52, thus can protect medical personnel and Patient is not punctured draw point and accidentally injures and infect.Locked and built-in puncture needle 3 can abandon in the lump with handle 4 and handle set 5 Process, and, the locking of this puncture needle can not unlock under normal usage, thus puncture steel can be prevented effectively from Pin exposes hurts sb.'s feelings, and the also process of the medical supplies rubbish for being finished provides safety guarantee.

Preferably, handle set 5 and handle 4 are integrated injection molding.

In a kind of preferred implementation of the present utility model, draw point portions 41 are provided with blood back and observe chamber 410, and blood back is observed The roof in chamber 410 is made of clear material.The afterbody of puncture needle 3 stretches into the front end that blood back observes chamber 410, and blood back observes chamber 410 rear end is provided with ventilative blocking solution plug 6.The upper surface of handle set body 51 is observed with blood back and is engraved at the corresponding position in chamber 410 In order to medical personnel, empty (there is a through hole 513), observes that when puncturing blood back observes the blood back in chamber 410.Using saturating After vapour lock liquid plug, the gas pressure that blood back is observed in chamber 410 can be made basically identical with atmospheric pressure, the blood back producing during puncture more holds Easily enter into blood back and observe chamber.

Although description of the present utility model combines specific embodiment, it should be understood by one skilled in the art that This utility model is not limited to embodiment described here it is possible to carry out various modifications and variations without departing from this utility model Spirit and scope.

Claims (7)

1. a kind of safe type venous retaining needle, including the soft pin of indwelling, puncture needle, handle and handle set；The soft pin of described indwelling There is central through hole；Described handle is slippingly arranged on described handle set, and can be between initial position and latched position Sliding；It is characterized in that,

Described handle set includes handle set body, indwelling soft needle seat, a pair of fromer rail and a pair of rear rail；Described handle set body Bottom surface be provided with along handle set body axial direction extend center chute；Described indwelling soft needle seat and described handle set body Front end is connected, and indwelling soft needle seat is provided with central through hole, and the soft needle guard of described indwelling is located on described indwelling soft needle seat；Before the pair of Guide rail is separately positioned on the both sides of described handle set body, the previous section both sides with handle set body respectively of a pair of fromer rail It is connected, the aft section of a pair of fromer rail leaves gap with the both sides of handle set body respectively；The pair of rear rail interval sets Put the rear in the pair of fromer rail, and be connected with the both sides of described handle set body respectively；

Described handle includes draw point portions and handle body；Described draw point portions are connected with described handle body, and slippingly It is arranged in the center chute of described handle set body, described puncture needle is fixed in described draw point portions；Described handle is originally Body is provided with a pair insertion chute extending along handle body axial direction；

When described handle is in described initial position, a pair of insertion chute of handle body is arranged on the pair of fromer rail On, described puncture needle passes through the central through hole of described indwelling soft needle seat and the soft pin of described indwelling；

When described handle is in described latched position, a pair of insertion chute of handle body is arranged on the pair of rear rail On, the needle point of described puncture needle is hidden in the central through hole of described indwelling soft needle seat.

2. safe type venous retaining needle as claimed in claim 1 is it is characterised in that described handle set and described handle are one Body injection mo(u)lding.

3. safe type venous retaining needle as claimed in claim 1 is it is characterised in that described draw point portions are provided with blood back observation Chamber, the roof that described blood back observes chamber is made of clear material；The afterbody of described puncture needle stretches into described blood back and observes chamber Front end, the rear end that described blood back observes chamber is provided with ventilative blocking solution plug；

The upper surface of described handle set body observes hollow out at the corresponding position in chamber with described blood back.

4. safe type venous retaining needle as claimed in claim 1 it is characterised in that described handle body include base portion and A pair of Handheld Division；

Described draw point portions are arranged on the top of described base portion, and are connected with described base portion；The pair of Handheld Division is respectively Positioned at the both sides of described base portion, and it is connected with base portion；The pair of insertion chute is arranged on the interior of the pair of Handheld Division On side.

5. safe type venous retaining needle as claimed in claim 1 is it is characterised in that the rear end of described handle set is provided with prevention institute State the stopper section that handle slides backward.

6. safe type venous retaining needle as claimed in claim 5 is it is characterised in that described stopper section is arranged on described a pair On rear rail.

7. safe type venous retaining needle as claimed in claim 6 is it is characterised in that described stopper section is to be arranged at described one Rear end side to rear rail outwardly projection.