CN2870739Y

CN2870739Y - Needle-unloading mechanism of blood sampler

Info

Publication number: CN2870739Y
Application number: CNU2005201395705U
Authority: CN
Inventors: 施国平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-02-21
Anticipated expiration: 2015-12-07

Abstract

A kind of needle disposal structure in blood sampling pen is characterized that the model mainly includes a putter component [1] for needle disposal; the putter component [1] of needle disposal is set on the shell of the blood sampling pen in the axial direction; for the putter component of needle disposal, in the shell is the putting rod [2], while outside the shell is the push-pull key[3]; the putting rod [2] is directly extended into the needle seat [4]of placing the blood sampling needle, and matched with the blood sampling needle; the push-pull key [3] is outside the shell and works as the operating terminal. The utility model has an additional needle disposal structure in the existing blood sampling needle, which makes the blood sampling pen automatically unload the needle after being used, and improves the operational safety and convenience of users.

Description

Blood collecting pen unload pin mechanism

Technical field

This utility model relates to a kind of and the supporting a kind of reusable inserting needle device of disposable blood taking needle, also claims " blood collecting pen ", is specifically related to a kind of needle construction that unloads of blood collecting pen.

Background technology

Blood collecting pen has the history of decades as the emitter of disposable blood taking needle, for many years, many stages have also been experienced in improvement and research to blood collecting pen, all the blood collecting pen structure there are numerous records both at home and abroad, wherein, the representative the applicant of being is on March 6th, 2002 in calendar year 2001 to the day for announcing of China Patent Office application, name is called " hemostix ", the patent No. is the utility model patent of CN01238383.X, it discloses a kind of simple in structure, blood collecting pen Ejection card lock construction cleverly, this blood collecting pen mainly comprises housing, head band blood taking needle needle stand launch member and spring, housing constitutes an ejection chamber at least, launch member and place in the ejection chamber and on direction of ejection, connect into the Elastic Sliding structure, launch between member and the housing and on the spring compressed path, be provided with latching structure with spring.During work, launch member and carry out in freedom, kayser, three kinds of cycle of states of shooting; Use: back out hemostix front shell (cap) earlier, blood taking needle is assigned on the needle stand that launches component head, screwing off the pin neck exposes needle point, the front shell of screwing on then (cap), member is launched in pulling, launch member and in ejection chamber, slide backward and compress spring simultaneously, when sliding into certain position, block by latching structure and to be the kayser battery; Then, when blood sampling, hemostix is aimed at blood sampling site, press firing button, the kayser release, launch member this moment under the promotion of pre-compressed spring, launches fast along ejection chamber, and needle point penetrates from pin hole and is the shooting state in the ejection process, launch member after the ejaculation and be returned to free state, finish primary emission because of spring action.Then, disposable blood taking needle---this obviously is one important necessary procedure by user operation replacing, the replacing process is as follows: back out hemostix front shell (cap) earlier, manually pull out the old pin on needle stand, insert the new pin of band pin neck again, screw off the pin neck needle point is exposed, the front shell of screwing on then (cap) performs the preparation of emission once more.Need user manually to pull out old blood taking needle when wherein changing blood taking needle, this just exists following drawback: 1, be infected with patients'blood on the syringe needle that blood taking needle uses the back to expose, user removes to pull out pin with hands, has by the danger of acupuncture, may cause the cross infection of blood, infective virus; 2, manually pull out old blood taking needle, operating needs two hands compounding practices, also convenient inadequately.

Summary of the invention

The purpose of this utility model is that existing various blood collecting pen is improved, and adds a cover and unload pin mechanism in its structure, makes blood collecting pen can automatically unload pin after use, improves the processing safety and the convenience of user.

For achieving the above object, the technical solution adopted in the utility model is: a kind of blood collecting pen unload pin mechanism, comprise mainly and unload the pin putter component that this unloads the pin putter component and is slidingly arranged in vertically on the blood collecting pen housing; Unload and in housing, be provided with push rod on the pin putter component, outside housing, be provided with the push-and-pull key; Push rod extends in the needle stand that inserts the arrangement blood taking needle, cooperates with blood taking needle; The push-and-pull key is exposed at outside the housing, as the operating side.

Related content in the technique scheme is explained as follows:

1, in the such scheme, describedly unloads the concrete scheme that pin putter component and blood collecting pen housing be slidingly connected and be: on the blood collecting pen housing, offer slotted hole type chute, unload the pin putter component and be arranged in this slotted hole type chute, be slidingly connected with this.When being provided with in the blood collecting pen when launching member, further scheme is as follows: offer slideway on the member launching, the front end of slideway leads to the needle stand of settling blood taking needle, and the described push rod that unloads the pin putter component is arranged in this slideway, slides along slideway.

2, in the such scheme, for preventing misoperation push-and-pull key in blood taking needle uses, blood taking needle is not just being come off from needle stand before the emission, designed following anti-structure of unloading the misoperation of pin putter component: described blood collecting pen housing is made of to be threaded cap and overcoat, the described pin putter component that unloads is slidingly arranged in outer putting, the seam crossing of corresponding cap and overcoat is provided with a stop portion on its push-and-pull key, the anterior contact with the cap bead of this stop portion stops that stop portion rear portion embeds in the embedded groove of corresponding setting on the overcoat bead.When cap covered, the push-and-pull key locked because of stop portion is stopped by the cap bead, can't move forward, and when only unloading cap, could promote the push-and-pull key forward.

3, the concrete form of the setting of such scheme and the Ejection card lock construction in the blood collecting pen is irrelevant, during application, it can be applied in as in the concrete hemostix structure of introducing in the background, also can be applied in existing other various blood collecting pen structure, match with other various Ejection card lock construction, constitute complete having and unload the blood collecting pen of pin function.

This utility model operation principle is: be all can finish under kayser battery and the free state at blood collecting pen and unload pin, shown in accompanying drawing 2 or accompanying drawing 4, unload the forward cap 8 of blood collecting pen earlier, then, promote push-and-pull key 3 forward, unload 1 reach of pin putter component with this, its upper push-rod 2 stretches into forward in the needle stand 4 along the slideway 7 that launches on the member 6, and old blood taking needle is ejected, this moment, state was shown in accompanying drawing 3 or accompanying drawing 5, then, a new blood taking needle is inserted in the needle stand, it is stand-by to screw on cap.In use, shown in accompanying drawing 2, the stopper section 10 of push-and-pull key 3 is stuck in 9 in cap 8 beads and overcoat, push-and-pull key 10 is lock-out state can't be operated, have only and unload cap 8 earlier and could promote push-and-pull key 3 and finish and unload pin action, therefore, reached the function that prevents maloperation.

Because the technique scheme utilization, this utility model compared with prior art has following advantage:

1, because application of the present utility model has reached and unloaded pin automatically, the safety, the wholesomeness that unload pin are improved, reduced the danger of user cross infection.

2, because application of the present utility model has reached and unloaded pin automatically, make the global design of blood taking needle more humane, more thoughtful, it is more convenient to operate.

3, because push-and-pull key of the present utility model is provided with stop portion, match with the cap bead, reached the function of locking push-and-pull key when using, prevented misoperation with this stop portion.

Description of drawings

Accompanying drawing 1 is looked sketch map for the novel master of this reality;

Accompanying drawing 2 is the elevational schematic view of accompanying drawing 1, the state before the expression blood collecting pen unloads pin among the figure under the kayser battery;

View when accompanying drawing 3 unloads pin for this utility model blood collecting pen under the kayser battery;

Accompanying drawing 4 is the view this utility model blood collecting pen unloads pin under free state before;

View when accompanying drawing 5 unloads pin for this utility model blood collecting pen under free state.

In the above accompanying drawing: 1, unload the pin putter component; 2, push rod; 3, push-and-pull key; 4, needle stand; 5, slotted hole type chute; 6, launch member; 7, slideway; 8, cap; 9, overcoat; 10, stop portion; 11, embedded groove; 12, firing button.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further described:

Embodiment: referring to accompanying drawing 1～5, a kind of blood collecting pen unload pin mechanism, comprise mainly and unload pin putter component 1 that this unloads pin putter component 1 and is slidingly arranged in vertically on the blood collecting pen housing; Unload and in housing, be provided with push rod 2 on the pin putter component, outside housing, be provided with push-and-pull key 3; Push rod 2 directly extends in the needle stand 4 that inserts the arrangement blood taking needle, cooperates with blood taking needle; Push-and-pull key 3 is exposed at outside the housing, as the operating side.

Described blood collecting pen housing is made of to be threaded cap 8 and overcoat 9, offers slotted hole type chute 5 on the overcoat 9, unloads pin putter component 1 and is arranged in this slotted hole type chute 5, is slidingly connected with this; And, also offering slideway 7 on the member 6 launching, the front end of slideway 7 leads to the needle stand 4 of settling blood taking needle, and the described push rod 2 that unloads pin putter component 1 is arranged in this slideway 7, slides along slideway 7.

The seam crossing of corresponding cap 8 and overcoat 9 is provided with a stop portion 10 on the push-and-pull key 3, these stop portion 10 front portions contact cooperation with cap 8 beads, stop portion 10 rear portions embed in the embedded groove 11 of corresponding setting on overcoat 9 beads, constitute anti-structure of unloading 1 misoperation of pin putter component with this.

Unload the length decision by slotted hole type chute 5 of stroke that pin putter component 1 slides in the present embodiment, it is longer that this slotted hole type chute 5 is provided with, and guaranteed under kayser battery and free state all blood taking needle to be ejected with the push rod 2 that unloads pin putter component 1.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to this utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of blood collecting pen unload pin mechanism, it is characterized in that: mainly comprise and unload pin putter component [1], this unloads pin putter component [1] and is slidingly arranged in vertically on the blood collecting pen housing; Unload and in housing, be provided with push rod [2] on the pin putter component, outside housing, be provided with push-and-pull key [3]; Push rod [2] extends in the needle stand [4] that inserts the arrangement blood taking needle, cooperates with blood taking needle; Push-and-pull key [3] is exposed at outside the housing, as the operating side.

2, blood collecting pen according to claim 1 unload pin mechanism, it is characterized in that: offer slotted hole type chute [5] on the described blood collecting pen housing, unload pin putter component [1] and be arranged in this slotted hole type chute [5], be slidingly connected with this.

3, blood collecting pen according to claim 2 unloads pin mechanism, it is characterized in that: launching in the described blood collecting pen offers slideway [7] on the member [6], the front end of slideway [7] leads to the needle stand [4] of settling blood taking needle, the described push rod [2] that unloads pin putter component [1] is arranged in this slideway [7], slides along slideway [7].

4, blood collecting pen according to claim 1 unloads pin mechanism, it is characterized in that: described blood collecting pen housing by cap [8] and overcoat [9] with the formation that is threaded, the described pin putter component [1] that unloads is slidingly arranged on the overcoat [9], the seam crossing that its push-and-pull key [3] is gone up corresponding cap [8] and overcoat [9] is provided with a stop portion [10], this stop portion [10] is anterior to contact cooperation with the bead of cap [8], stop portion [10] rear portion embeds in the embedded groove [11] of corresponding setting on overcoat [9] bead, constitutes anti-structure of unloading pin putter component [1] misoperation with this.