CN2479917Y

CN2479917Y - Hemostix

Info

Publication number: CN2479917Y
Application number: CN 01238383
Authority: CN
Inventors: 施国平
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-18
Filing date: 2001-06-18
Publication date: 2002-03-06
Anticipated expiration: 2011-06-18

Abstract

A hemostix comprises a case, an ejective structural member with a seat at the head for blood taking needle and a spring, wherein the case forms at least one ejecting cavity, the ejective structural member is located inside the ejecting cavity and is made into an resilient sliding structure in the ejecting direction by means of connecting with the spring, a locking mechanism is installed at the compressed path of the spring between the ejective structural member and the case, which is characterized in that the locking mechanism consists of a lever [13], a rotation fulcrum [14], a snap [15], and a resilient member [16], the snap [15] is installed on the ejective structural member, the rotation fulcrum [14] is installed on the case, the lever [13], with one end is designed as a draw-in gear[17] and another end as a pressing handle[18], acts with its mid-part on the rotation fulcrum [14], and the elastic member [16] acts on the part between the case and the lever [13], and forces the draw-in gear [17] to move towards the direction of the resilient member. The hemostix has the advantage of the unique lever-type locking mechanism, which breaks the monopolization of elastic-arm-type locking mechanism.

Description

Hemostix

This utility model relates to a kind of reusable inserting needle device supporting with disposable blood taking needle, also claims by " hemostix ", is specifically related to adopt a kind of latching structure of ware device.

Hemostix has the history of decades as the emitter of disposable blood taking needle, wherein many stages have also been experienced in the improvement of hemostix, United States Patent (USP) once in nineteen ninety December announced a name on the 11st and be called " blood taking needle ejector mechanism (Lancet Ejector Mechanism) ", the patent No. is the patent of US4976724.This patent is the theme with the inserting needle device and discloses a kind of certain representational technical scheme that has, its structure is mainly by housing, launch member, spring three parts are formed, housing constitutes an ejection chamber, launch member and be positioned at ejection chamber, and be linked to be the Elastic Sliding structure with spring, launch member and case side between be provided with elastic arm type latching structure, this latching structure is cooperated with hole clipping by elastic arm and constitutes, elastic arm extends from the sidepiece that launches member, hole clipping is located at the sidepiece of housing, the end of elastic arm is slipped to and forms the kayser state in the hole clipping when member is launched in pulling, and pressing sidepiece button is released the state of penetrating of transmitting with the elastic arm end from hole clipping.The advantage of above-mentioned latching structure is simple in structure, reliable operation, but higher to the material requirements of elastic arm, common plastics can't satisfy the elastic performance requirement.

This utility model purpose provides a kind of hemostix of novel latching structure.

For achieving the above object, the technical solution adopted in the utility model is: a kind of hemostix, what comprise housing, head band blood sampling needle stand launches member and spring, housing constitutes an ejection chamber at least, launching member places in the ejection chamber and connects into the Elastic Sliding structure with spring on direction of ejection, launch between member and the housing and on the spring compressed path, be provided with latching structure, constitute with this and launch the ejection structure that member is freedom, kayser, three kinds of cycle of states work of shooting.Described latching structure is the level type latching structure, mainly form by lever, rotating fulcrum, bayonet socket and elastic component, bayonet socket is located at and launches on the member, rotating fulcrum is located on the housing, one end of lever is a dop, and the other end is a pressure handle, and the centre acts on the rotating fulcrum, elastic component acts between housing and the lever and forces dop to move towards elastic component, and pressure handle exposes from the pressing hole of housing.

In the technique scheme, described " housing " is the general name of hemostix shell, specifically can be put together by several sections.Described " launching member " is meant movable part sliding back and forth in the hemostix, and blood taking needle is installed on the needle stand of these parts.Described " level type latching structure " is meant a kind of latching structure that carries out work with lever principle, elastic arm type latching structure also of the prior art relatively and naming.Described " lever " is to come qualitatively from member stress and movement effects angle, can not only judge from face shaping.

In the technique scheme, described " elastic component " is a kind of general name, specifically can comprise following five kinds of situations:

1, elastic component is a kind of elastic arm, specifically is an extended cantilever design from the lever, and cantilever end contacts with housing and forms elastic construction.This situation generally is applied on the working of plastics, and is simple in structure, effective.

2, elastic component is a reed, and reed acts between housing and the lever and forms elastic construction.This situation generally adopts sheet metal to make.

3, elastic component is extension spring, and extension spring one end acts on the housing, and the other end acts on pressure handle one side of lever.

4, elastic component is a stage clip, and stage clip one end acts on the housing, and the other end acts on dop one side of lever.

5, elastic component is a torsion spring, and torsion spring one end acts on the housing, and the other end acts on the lever.

This utility model operation principle is: when launching member in the blood taking needle and be in free state, open the hemostix front shell, blood taking needle is assigned on the needle stand that launches component head, screwing off the pin neck exposes needle point, cover front shell then, member is launched in pulling, launches member and slides backward in ejection chamber and compress spring simultaneously, when sliding into certain position, dop on the lever inserts to make in the bayonet socket and launches the relative housing of member and be the kayser state.During blood sampling hemostix is aimed at blood sampling site, press the button, the lever activity supporting point that rotates rotates, and drives dop and extracts out from bayonet socket, and launch member this moment under the promotion of pre-compressed spring, launches fast along ejection chamber, and needle point penetrates from pin hole in the ejection process.Wherein, the effect of elastic component provides the power that dop inserts bayonet socket.It is to utilize the elastic force of elastic component to act on the dop of lever that the dop of this utility model latching structure inserts bayonet socket, and emission is to utilize lever principle, and the lever activity supporting point that rotates itself rotates when the pressure handle of pressing lever, with this dop is extracted out from bayonet socket.

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

1, level type latching structure described in the utility model utilizes lever principle to carry out kayser and release dexterously, and its novel structure practicality has than highland creativeness.

2, this utility model level type latching structure has been broken the long-term monopolization of elastic arm type latching structure, has overcome technology prejudice in the past, has broken a new road, has positive effect to promoting the progress of this subject technology and improving innovation.

3, this utility model mechanism is flexible, and good reproducibility can guarantee the concordance of blood taking needle emission dynamics preferably.

4, level type latching structure described in the utility model is lower to material performance requirement, and mechanism's functional reliability height, uses the longevity long.

Cutaway view when accompanying drawing 1 is in free state for this utility model embodiment penetrates head;

Accompanying drawing 2 is in cutaway view when waiting to penetrate state for this utility model embodiment penetrates head;

Cutaway view when accompanying drawing 3 is in emission state for this utility model embodiment penetrates head;

Accompanying drawing 4 is penetrated the structure partial enlarged drawing for this utility model embodiment card;

Accompanying drawing 5 is this utility model latching structure schematic diagram;

Accompanying drawing 6 is first kind of scheme sketch map of this utility model latching structure;

Accompanying drawing 7 is second kind of scheme sketch map of this utility model latching structure;

Accompanying drawing 8 is the third scheme sketch map of this utility model latching structure;

Accompanying drawing 9 is the 4th kind of scheme sketch map of this utility model latching structure;

Accompanying drawing 10 is the 5th kind of scheme sketch map of this utility model latching structure.

Wherein: [1], regulating sleeve; [2], lining; [3], cap; [4], middle cover; [5], button; [6], locking key; [7], ring for fixing; [8], penetrate head; [9], shooting spring; [10], interior reservation; [11], return spring; [12], the pen cap; [13], lever; [14], rotating fulcrum; [15], bayonet socket; [16], elastic component; [17], dop; [18], pressure handle; [19], elastic arm; [20], stage clip; [21], torsion spring; [22], reed; [23], extension spring.

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

Embodiment: referring to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 6, a kind of adjustable hemostix, by housing, launch member and spring three big parts are formed, the front portion of housing is provided with blood sampling depth adjustment structure, launch and on the spring compressed path, be provided with the level type latching structure between member and the housing, spring with launch member constitutes the ejection structure and the pen cap [12] in housing resetting structure.

Housing constitutes an ejection chamber, and housing described in this example is based on middle cover [4], and the front portion is provided with cap [3], and the rear portion is provided with the pen cap [12], and cap [3] adopts with middle cover [4] and is threaded, and the pen cap [12] is connected with middle cover [4] sliding sleeve.The head of cap [3] is provided with blood sampling depth adjustment structure, this adjustment structure is to be made of the head of cap [3], lining [2] and regulating sleeve [1] assembling, rotary regulating sleeve [1], the pin hole end face of the relative cap of its pin hole end face [3] moves to left, reverse rotation then moves to right, regulate the needle point exposed length with this, the degree of depth that human body skin is thrust in control.

Launch member for penetrating head [8], penetrate head [8] and place in the ejection chamber, a blood sampling of its head band needle stand, body portion and ejection chamber are slidingly connected, and afterbody is a tie-bar.Described spring is made up of shooting spring [9] and return spring [11], shooting spring [9] is enclosed within on the leading portion of penetrating head [8] afterbody pull bar, and an end of shooting spring [9] contacts with step on the pull bar, and the other end contacts with the end face of middle cover [4], constitutes the Elastic Sliding structure with this in ejection chamber.Return spring [11] is enclosed within on the back segment of penetrating head [8] afterbody pull bar, and an end of return spring [11] contacts with the step of pull bar afterbody, and the other end contacts with the end face of interior reservation [10], and cover decided at the higher level but not officially announced [10] is fixed in the pen cap [12], with the resetting structure of this pen cap [12].

Described level type latching structure is made up of locking key [6], button [5], rotating fulcrum [14] and bayonet socket [15].Middle cover [4] is provided with the latching structure installation cavity with the sidepiece of fixed cover [7], and this installation cavity bottom is communicated with ejection chamber, and a pressing hole is arranged at top, and button [5] is placed in the pressing hole.Rotating fulcrum [14] is a transverse axis, the transverse axis two ends are fixed on the middle cover [4], the main body of locking key [6] is lever [13], extend an elastic arm on the lever [13], one end of lever [13] is dop [17], the other end is pressure handle [18], the centre is rotationally connected by groove and transverse axis, the elastic arm end contacts with fixed cover [7], the effect of elastic arm is to force dop [17] towards penetrating head [8] motion, bayonet socket [15] is located to be penetrated on the corresponding side of head [8], and being shaped as of bayonet socket [15] is barb-shaped, and pressure handle [18] contacts with button [5].

Claims

1, a kind of hemostix, comprise housing, head band blood sampling needle stand launch member and spring, housing constitutes an ejection chamber at least, launching member places in the ejection chamber and connects into the Elastic Sliding structure with spring on direction of ejection, launch between member and the housing and on the spring compressed path, be provided with latching structure, constitute with this and to launch member and be free, kayser, the ejection structure of three kinds of cycle of states work of shooting, it is characterized in that: described latching structure is the level type latching structure, mainly by lever [13], rotating fulcrum [14], bayonet socket [15] and elastic component [16] are formed, bayonet socket [15] is located at and launches on the member, rotating fulcrum [14] is located on the housing, one end of lever [13] is dop [17], the other end is pressure handle [18], the centre acts on the rotating fulcrum [14], elastic component [16] acts between housing and the lever [13] and forces dop [17] towards the elastic component motion, and pressure handle [18] exposes from the pressing hole of housing.

2, hemostix according to claim 1 is characterized in that: described elastic component [16] is an elastic arm [19], and elastic arm [19] is to go up an extended cantilever design from lever [13], and cantilever end contacts with housing.

3, hemostix according to claim 1 is characterized in that: described elastic component [16] is a reed [22], and reed [22] acts between housing and the lever [13].

4, hemostix according to claim 1 is characterized in that: described elastic component [16] is extension spring [23], and extension spring [23] one ends act on the housing, and the other end acts on pressure handle [18] one sides of lever [13].

5, hemostix according to claim 1 is characterized in that: described elastic component [16] is a stage clip [20], and stage clip [20] one ends act on the housing, and the other end acts on dop [17] one sides of lever [13].

6, hemostix according to claim 1 is characterized in that: described elastic component [16] is a torsion spring [21], and torsion spring [21] one ends act on the housing, and the other end acts on the lever [13].

7, hemostix according to claim 1 is characterized in that: described rotating fulcrum [14] is a transverse axis, and the transverse axis two supports is on housing, and lever [13] is rotationally connected by groove or hole and transverse axis.

8, hemostix according to claim 1 is characterized in that: described rotating fulcrum [14] is a transverse axis, and transverse axis is fixed on the lever [13], and transverse axis two ends and housing are rotationally connected.