CN2907715Y

CN2907715Y - Disposable injection device

Info

Publication number: CN2907715Y
Application number: CN 200620115371
Authority: CN
Inventors: 陈昌慈
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-25
Filing date: 2006-05-25
Publication date: 2007-06-06
Anticipated expiration: 2016-05-25

Abstract

The utility model is relates to a disposable injection device which is composed of a fluid canister, a needle head, a handspike and a ringer; wherein the needle head is united with a seat tenon in at the front end of the fluid canister and is provided arranged internally with a hook lock part. A pole mast with a fastener part extends along the axis axial direction in at the front end of the handspike body, and the rear of the fastener part is provided arranged with a hole tuck and a first break-off part. And the pole mast is drilled through and fixed with. the ringer, and makes the ringer slip and fixarranged in the fluid canister by the slippage way. And the slippage pushes forward as the The handspike and the ringer are pushed forward persistingly after being get beaten or injected, and makes the fastener parthook lock is hooked on the hook lock partlock joint and closed a through hole of the seat tenon is closed. Then, the handspike is pulled back to make the first break-off part be snapped and disenabled the air sealing function of the hole tuck and the front axis hole of the ringer.

Description

Disposable syringe device

Technical field

This utility model relates to a kind of injection device, refers to a kind of disposable syringe device especially.

Background technology

Press injection device, for example syringe cylinder occupies very big proportion in medical device, is difficult to the disease for the treatment of especially more in recent years, and spreading of acquired immune deficiency syndrome (AIDS), hepatitis B for example constantly taken place with the case of reason infectable infection.Therefore, also cause the attention of each bound pair medical device, especially with syringe cylinder for very, be with, the disposable injection needles tube of tool is to become inevitable and unavoidable trend.

Promptly No. 200510134691.5 patent application of China that is had with this utility model applicant is example, it is by a fluid cylinder, one syringe needle, a push rod, a collar and a locating ring are formed, it separates syringe needle after laying particular emphasis on injection with fluid cylinder, again push rod is retracted backward, syringe needle, push rod leading portion and the collar are accommodated in the fluid cylinder, and it can't be exposed again, do not use for drawing liquid more again, and have desired disposable function.

No doubt aforementioned patent possesses disposable self-destroying function, to avoid repeated use.Only this case is provided with a spiral type by fluid cylinder and roof between the seat tenon and tears ditch, and push rod is after injection finishes, and the clamping part of its front end is buckled in the interior snapping portion of a tenon, when push rod is pulled back, make this tear ditch because of breaking, and cause the fluid cylinder breakage, to form a kind of safety injector.

In fact, general so-called safety injector is is mostly researched and developed voluntarily, is designed and made by medical device manufacturer, a very few difficult problem and puzzlement that on practice, may suffer from reference to healthcare, for example confection, medicament residue problem, and even decision opportunity of damaging etc.That is, when known safety injection dress desire is mixed two kinds or above medicament, if misoperation promptly forms self-destruction.Moreover general injection device all can't will be injected with the medicament of syringe needle connecting portion (in the through hole as the seat tenon), and causes the residual waste of medicament.In addition, should independently determine by medical personnel or user the opportunity that safety injector damages, can reach the most effective utilization.

The utility model content

The purpose of this utility model is to provide a kind of disposable syringe device.

For achieving the above object, the disposable syringe device that this utility model provides, by a fluid cylinder, a syringe needle, a push rod reaches a collar and forms, and wherein, this syringe needle is incorporated into the seat tenon of fluid cylinder front end, and its inside is provided with a snapping portion; Push rod shaft front end extends axially a roofbolt with a clamping part, and this clamping part rear then is provided with a stopple and one first broken part, and roofbolt passes through and fix this collar, makes this collar be placed in the fluid cylinder slippingly;

This push rod pushes away before continue injection or injection back together with the collar, makes the clamping part clip in snapping portion, and with the sealing of seat tenon through hole, then push rod is retracted, and first broken part is broken, and makes the place ahead axis hole of this stopple and the collar lose airtight effect forming.

Described disposable syringe device, wherein this fluid cylinder open rearward end is provided with a stopper section, projection one club head radially between the shaft of push rod and the roofbolt, it can be snapped in this stopper section.

Described disposable syringe device, wherein a T-Ring is established in the fluid cylinder open rearward end is inwardly prominent in this stopper section, and the club head of push rod then is made of two forward and backward fins, and this two fin can be snapped in T-Ring and locate.

Described disposable syringe device, wherein this push rod is provided with one second broken part in the club head rear, when club head is snapped in the stopper section, can bestows external force this second broken part is fractureed.

Described disposable syringe device, wherein this snapping portion is a snap ring, clamping part then is an oblique outer arrow shape coak of opening, but and this coak clip in this snap ring.

Described disposable syringe device, wherein the rear, first broken part of this roofbolt is radially prominent establishes a sliding part, and its forward and backward ring plate by two periphery tool bevels is constituted, common double team collar rear annular distance, when the clamping part of roofbolt buckles into the snapping portion of a tenon, this two ring plate is slipped in the ring casing.

In other words, the disposable syringe device that this utility model provides, it is by a fluid cylinder, a syringe needle, a push rod, and a collar forms, and wherein, this syringe needle is incorporated into a tenon of fluid cylinder front end, and its inside is provided with a snapping portion; And push rod shaft front end extends axially a roofbolt with a clamping part, and this clamping part rear then is provided with a stopple and one first broken part, and roofbolt passes through and fix this collar, makes this collar be placed in the fluid cylinder slippingly; This push rod pushes away before continue injection or injection back together with the collar, makes the clamping part clip in snapping portion, and with the through hole sealing of seat tenon, then push rod is retracted, and first broken part is broken, and makes the place ahead axis hole of this stopple and the collar lose airtight effect forming.

The disposable syringe device that this utility model provides, wherein this this fluid cylinder open rearward end is provided with a stopper section, and projection one club head radially between the shaft of push rod and the roofbolt, it can be snapped in this stopper section.Wherein a T-Ring is established in the fluid cylinder open rearward end is inwardly prominent in this stopper section, and the club head of push rod then is made of two forward and backward fins, and this two fin can be snapped in T-Ring and locate.

The disposable syringe device that this utility model provides, wherein this push rod is provided with one second broken part in the club head rear, in order to do when club head is snapped in the stopper section, can bestows external force this second broken part is fractureed.

The disposable syringe device that this utility model provides, wherein this snapping portion is a snap ring, clamping part then is an oblique outer arrow shape coak of opening, but and this coak clip in this snap ring.

The disposable syringe device that this utility model provides, wherein radially dash forward and establish a sliding part in the rear, first broken part of this roofbolt, its forward and backward ring plate by two periphery tool bevels is constituted, common double team collar rear annular distance, when the clamping part of roofbolt buckles into the snapping portion of a tenon, this two ring plate is slipped in the ring casing.

By enforcement of the present utility model, can cooperate the nurse to carry out the operation of confection, make residual medicament extremely low, and can independently determine opportunity of damaging, and solve the awkward situation in most of in the market type self-destroyed injection devices designs fully by medical personnel or user.

Description of drawings

For further disclosing technology contents of the present utility model, at first see also accompanying drawing, wherein:

Fig. 1 is the three-dimensional exploded view of this utility model disposable syringe device;

Fig. 2 is the profile of this utility model group after upright;

Fig. 3 is the sketch map of this utility model when injection;

Fig. 4 for this utility model in injection finish and the push rod clip in the sketch map of seat tenon;

Fig. 5 for this utility model push rod pull back make front end fracture and clip in the sketch map of fluid cylinder open rearward end;

The sketch map that Fig. 6 fractures in the fluid cylinder open rearward end for this utility model push rod.

The specific embodiment

To shown in Figure 2, basically, disposable syringe device of the present utility model is by a fluid cylinder 1, one syringe needle 2, one push rods 3 as Fig. 1, and a collar 4 combines.

Wherein, fluid cylinder 1 is a hollow form, and its chamber of inner tool 11 is for ccontaining liquid medicine injection, and its rear then is provided with a pair of fin 12, for the usefulness of people's gripping.Fluid cylinder 1 front end is the seat tenon 14 of less and central tool one through hole 13 of tool one external diameter then, and this is the known assemblies of fluid cylinder 1 all, does not intend giving unnecessary details at this.And be to form the self-destruction effect, this tenon 14 is in abutting connection with the then inwardly prominent snapping portion 15 that establishes of roof inner face, and for example snap ring forms buckle with push rod 3 front ends.Moreover, the inwardly prominent stopper section 16 of establishing of these chamber 11 nearly open rearward end, for example T-Ring is chatted after its dependent interaction appearance again.

Syringe needle 2 is a well-known components, and it has an entry needle 21 and is linked to needle stand 22, and these needle stand 22 central authorities are hole 23 of tool then, and can be communicated in the pin hole of entry needle 21, makes a hole 23 closely be sleeved on a tenon 14.

Push rod 3 is the strip body of rod, its end has a push jack 31, and shaft 32 is made of some radial lamellar bodies, front end is tool one club head 33 then, its the place ahead extends axially a roofbolt 34, this roofbolt 34 is radially prominent establish a sliding part 35 its with the clamping part 36 of front end, between for example oblique outer the arrow shape coak, be provided with first broken part 37 of a retraction shape in regular turn, for example roll over a neck and a stopple 38.

This club head 33 is made of 331,332 of the forward and backward fins of two periphery tool bevels, in the stopper section 16, is retraction shape second broken part 39 in order to these club head 33 rear external diameters in order to push rod 3 clips, and for example the bar neck fractures.And sliding part 35 to be 351,352 of forward and backward ring plates by two periphery tool bevels constitute the annular distance 42 of the common double team collar 4 rear walls.

The collar 4 is made for soft material, only be not limited to elastomeric material, its outside dimension is corresponding to tube chamber 11, can closely fill in and close, and an annular distance 42 is opened at its inner ring casing 41 rears, supply and 351,352 sockets of the aforesaid two ring wings, and front end is the less axis hole 43 of tool one size then, in order to do passing of confession clamping part 36, and sealed, to form tight function by stopple 38.Wherein, this ring casing 41 has suitable depth, so that the portion's slip within it of two ring plates 351,352 of sliding part 35.

See also Fig. 2, this utility model in group immediately, at first the collar 4 is sleeved on roofbolt 34, clamping part 36 is passed by axis hole 43, and sealed, and two ring plates 351,352 are socketed on annular distance 42 by stopple 38, then be inserted in push rod 3 in the tube chamber 11 of fluid cylinder 1 together with the collar 4, and syringe needle 2 mat needle stands 22 are nested in a tenon 14, promptly present profile as shown in Figure 2, and can be the medicinal liquid state that draws.

See also Fig. 3, after drawing medicinal liquid, and when desiring injection,, make 11 reaches of its front end collar 4, use the extruding medicinal liquid, make it pass through a tenon 14 and syringe needle 2, and be injected in the body along the tube chamber with push rod before pointing 3.

After injection finishes, as shown in Figure 4, push away before will this push rod 3 continuing, make clamping part 36 be snapped in snapping portion 15 in the tenon 14, the two ring wings 351,352 of sliding part 35 are entered respectively in the ring casing 41.At this moment, clamping part 36 is through hole 13 sealing, and firmly clip in snapping portion 15.

As shown in Figure 5, this push rod 3 is pulled back, at this moment, this first broken part 37 is stressed and broken, and separates with shaft 32, and the axis hole 43 of the collar 4 is because of separating with stopple 38, and lose gastight function, and obtain desired disposable self-destruction and can not reusable function.And in addition the shaft 32 of section is drawn back into the stopper section 16 of a chamber 11 open rearward end together with the collar 4, makes club head 35 and stopper section 16 form clips.

As shown in Figure 6, at this moment, can push rod 3 be fractureed, push rod 3 leading portions, two parts and the collar 4 are resided in the chamber 11 via 39 places, second broken part.And reside in the syringe needle 2 of a tenon 14, then can remove, to avoid accidentally injuring the healthcare givers by other tool scissors.

So,, after injection or injection, will push away before the push rod continuation via enforcement of the present utility model, can make push rod front end clip in the through hole of seat tenon, and, then push rod be retracted its sealing, first broken part is broken, make the collar because of separating, and lose tight function with stopple.Moreover this push rod then is snapped in the stopper section by club head in being returned to the fluid cylinder opening, in second broken part place push rod is fractureed immediately, and with the sealing of fluid cylinder inlet, thereby obtains self-destruction and can't reusable effect.Therefore, particular design of the present utility model, can cooperate the nurse to carry out the operation of confection, make residual medicament extremely low, and can independently determine opportunity of damaging by medical personnel or user, and solve the awkward situation in most of in the market type self-destroyed injection devices designs fully, for example residual dose exceeds standard, can not carry out confection, or operation error damages the puzzlement that syringe causes accidentally in advance.

This utility model is described, and just preferred embodiment is a kind of, and patent right category of the present utility model is not all taken off in partial such as change or modification and come from technological thought of the present utility model and be to have the knack of this technical staff to be easy to know by inference.

Claims

1, a kind of disposable syringe device is characterized in that, by a fluid cylinder, and a syringe needle, a push rod reaches a collar and forms, and wherein, this syringe needle is incorporated into the seat tenon of fluid cylinder front end, and its inside is provided with a snapping portion; Push rod shaft front end extends axially a roofbolt with a clamping part, and this clamping part rear then is provided with a stopple and one first broken part, and roofbolt passes through and fix this collar, and this collar is placed in the fluid cylinder slippingly;

2, disposable syringe device as claimed in claim 1 is characterized in that, wherein this fluid cylinder open rearward end is provided with a stopper section, projection one club head radially between the shaft of push rod and the roofbolt, and it can be snapped in this stopper section.

3, disposable syringe device as claimed in claim 2 is characterized in that, wherein a T-Ring is established in the fluid cylinder open rearward end is inwardly prominent in this stopper section, and the club head of push rod then is made of two forward and backward fins, and this two fin can be snapped in T-Ring and locate.

As claim 2 or 3 described disposable syringe devices, it is characterized in that 4, wherein this push rod is provided with one second broken part in the club head rear, when club head is snapped in the stopper section, can bestows external force this second broken part is fractureed.

5, disposable syringe device as claimed in claim 1 is characterized in that, wherein this snapping portion is a snap ring, and clamping part then is an oblique outer arrow shape coak of opening, but and this coak clip in this snap ring.

6, disposable syringe device as claimed in claim 1, it is characterized in that, wherein radially dash forward and establish a sliding part in the rear, first broken part of this roofbolt, its forward and backward ring plate by two periphery tool bevels is constituted, common double team collar rear annular distance, when the clamping part of roofbolt buckles into the snapping portion of a tenon, this two ring plate is slipped in the ring casing.