CN209221201U - Syringe - Google Patents

Abstract

The utility model provides a kind of syringe, including ontology, inject component, seal assembly and driving assembly, injecting component includes plunger rod, lock-screw and internal plug, ontology is equipped with infusion slot towards the side for injecting component, internal plug is set to the end of infusion slot, internal plug is equipped with pilot hole towards the side of ontology, seal assembly includes guide post and set on interior sealing ring beyond the Great Wall, sealing ring is set between infusion slot and internal plug, ontology is equipped with pilot hole towards the side of sealing ring, driving assembly includes driving plate, drive rod and drive block, the design that the utility model passes through setting pilot hole and guide post between internal plug and ontology, sealing ring is effectively prevented due to plunger rod, thickness caused by lock-screw rotation moves upwards is uneven, and then improve the service life of sealing ring and syringe, and effectively prevent movement due to sealing ring The phenomenon of leakage caused by uneven.

Description

Syringe

Technical field

The utility model relates to technical field of medical equipment, in particular to a kind of syringe.

Background technique

The development of continuous improvement of people's living standards with the development of the times, Medical Devices is also getting faster, and wherein Syringe makes it update as one of maximum instrument of dosage in Medical Devices to ensure that the medical care to patient is treated More and more frequently, syringe is used for medical staff to the injecting liquid drug of patient, so that the superiority and inferiority of syringe performance directly affects The treatment of patient, therefore people increasingly pay attention to the stability and safety issue of syringe construction.

Existing syringe includes ontology, the needle tubing for being respectively arranged on ontology both ends and push rod and is set between ontology and push rod Sealing ring, when to ontology complete medical fluid loading after, medical staff completes the injecting liquid drug to patient by injecting push rod.

The service life of sealing ring is lower in existing syringe, so that syringe whole service life is shorter, and It is easy to appear the phenomenon of leakage when syringe is longer using the time, so that usage safety performance is lower, is easy to cause medical treatment The generation of accident.

Utility model content

Based on this, the utility model provides a kind of long service life, security performance high syringe.

A kind of syringe, what is connect including ontology, with the ontology injects component, injects component and described set on described Seal assembly between body and with the driving assembly injecting component and connecting, it is described inject component include plunger rod, with it is described The lock-screw of plunger rod connection and the internal plug connecting with the lock-screw, the ontology inject the side of component described in Equipped with infusion slot, the internal plug is set to the end of the infusion slot, and the internal plug is equipped with pilot hole towards the side of the ontology, The seal assembly includes guide post and set on the interior sealing ring beyond the Great Wall, the sealing ring be set to the infusion slot with it is described Between internal plug, the ontology is equipped with pilot hole towards the side of the sealing ring, and one end of the guide post is set to the guiding In hole, the other end be set to the pilot hole in, the driving component include driving plate, the drive rod being connect with the driving plate and The drive block being connect with the drive rod.

Said syringe, by the way that setting for the pilot hole and the guide post is arranged between the internal plug and the ontology Meter effectively prevents thickness caused by the sealing ring is moved upwards due to the plunger rod, lock-screw rotation not , and then the service life of the sealing ring and the syringe is improved, and effectively prevented due to the sealing ring The phenomenon of leakage caused by movement is uneven effectively increases the plunger column and the infusion by the design of the sealing ring Friction area between slot, and then further improve the service life of the syringe.

Further, the syringe further includes fixation kit, the fixation kit include loading plate and with the carrying The fixation bracket of plate connection, the ontology are sticked on the loading plate.

Further, the loading plate is equipped with drive hole towards one end of the driving component, and the drive rod runs through institute Drive hole is stated, the driving plate is set in the fixed bracket.

Further, the driving component further includes gag lever post, the end of the gag lever post and the fixed company of the driving plate It connects, the support bracket fastened top is equipped with limiting slot, and the top of the gag lever post is set in the limiting slot.

Further, be equipped with calibration assemblies in the drive block, the calibration assemblies include self-aligning bearing and with the tune Mandrel holds the retaining ring of connection, and the drive block is equipped with bearing groove, and the bearing groove uses waist type groove structure, the self-aligning bearing It is set in the bearing groove with the retaining ring.

Further, the self-aligning bearing includes outer ring and the inner ring that connect with the outer ring rotating, the inner ring and institute It states drive block to be fixedly connected, outer ring driving synchronous with the drive block.

Further, the plunger rod is equipped with limited post towards the side of the drive block, and the limited post is equipped with limit Position platform, the limiting stand are connected in the drive block.

Further, the loading plate is equipped with guide rail backwards to the side of the drive block, and the guide rail is described for ensureing The sliding of drive block.

Further, the loading plate is equipped with multiple equipment mounting hole, and the equipment mounting hole is used for the loading plate Assembly between external equipment.

Further, the plunger rod is made of ceramic material.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the syringe that the utility model first embodiment provides；

Fig. 2 is the side structure schematic view of syringe in Fig. 1；

Fig. 3 is the structural schematic diagram for the seal assembly that the utility model first embodiment provides；

Fig. 4 is the structural schematic diagram of body bottom portion in Fig. 1；

Fig. 5 is seal assembly in the utility model first embodiment and injects the structural schematic diagram between component；

Fig. 6 is loading plate structure schematic diagram in Fig. 5；

Fig. 7 is the structural schematic diagram of driving assembly in Fig. 1；

Fig. 8 is the structural schematic diagram of self-aligning bearing in Fig. 7；

Fig. 9 is the structural schematic diagram for the plunger rod that the utility model second embodiment provides；

Essential element symbol description

Syringe	100	Ontology	10
				Infusion slot	101	Pilot hole	102
Plunger rod	20,20a	Limited post	201
				Limiting stand	202	Lock-screw	21
Internal plug	22	Driving plate	30
				Drive rod	31	Nut	311
Drive block	32	Bearing groove	321
				Loading plate	40	Equipment mounting hole	401
Guide rail	402	Drive hole	403
				Fixed bracket	41	Gag lever post	42
Sealing ring	50	Guide post	51
				Self-aligning bearing	60	Outer ring	601
Inner ring	602	Retaining ring	61

The following detailed description will be further explained with reference to the above drawings the utility model.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Several embodiments of the utility model are given in attached drawing.But this Utility model can be realized in many different forms, however it is not limited to embodiment described herein.On the contrary, providing these The purpose of embodiment is to keep the disclosure to the utility model more thorough and comprehensive.

It should be noted that it can directly on the other element when element is referred to as " being fixedly arranged on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side ", "upper", "lower" and similar statement for illustrative purposes only, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.Term " and or " used herein includes one or more relevant listed items Any and all combinations.

Referring to Fig. 1, the utility model first embodiment provides a kind of syringe 100, including ontology 10 and the ontology 10 connections inject component, connect set on the seal assembly injected between component and the ontology 10 and with the component of injecting The driving assembly connect, for the driving component with facilitating medical staff to inject medical fluid, the seal assembly is described for improving Ontology 10 and the leakproofness injected between component effectively prevent the leakage of medical fluid, and the component of injecting is for completing To the bolus infusion of medical fluid in the ontology 10.

Please refer to Fig. 2 to Fig. 5, the lock-screw for injecting component and including plunger rod 20, connecting with the plunger rod 20 21 and the internal plug 22 that is connect with the lock-screw 21, the ontology 10 be equipped with infusion slot towards the side for injecting component 101, the internal plug 22 is set to the end of the infusion slot 101, and the internal plug 22 is equipped with assembly towards the side of the ontology 10 Hole.The seal assembly includes guide post 51 and the sealing ring 50 in the internal plug 22, and the sealing ring 50 is set to described It is infused between slot and the internal plug 22, the ontology 10 is equipped with pilot hole 102, the guiding towards the side of the sealing ring 50 One end of column 51 is set in the pilot hole 102, and the other end is set in the pilot hole.

The driving component include driving plate 30, the drive rod 31 being connect with the driving plate 30 and with the drive rod 31 The drive block 32 of connection, the driving plate 30 is for facilitating driving of the medical staff to the driving component, the drive block 32 For driving the drive block 32 under the driving of the driving plate 30, so that the plunger rod 20 connecting with the drive block 32 moves It is dynamic, and then ensured that the plunger rod 20 and the internal plug 22 inject operation in the ontology 10.

The syringe 100 further includes fixation kit, the fixation kit include loading plate 40 and with the loading plate 40 The fixation bracket 41 of connection, the ontology 10 are sticked on the loading plate 40, and the loading plate 40 is towards the driving component One end be equipped with drive hole 403, the drive rod 31 runs through the drive hole 403, and the driving plate 30 is set to the fixed branch In frame 41.

Preferably, the driving component further includes gag lever post 42, and the end of the gag lever post 42 and the driving plate 30 are solid Fixed connection, the top of the fixed bracket 41 are equipped with limiting slot, and the top of the gag lever post 42 is set in the limiting slot, passes through The design of the gag lever post 42 effectively raises the stability of structure between the driving component and the fixed bracket 41, Preferably, the top of the drive rod 31 is equipped with nut 311 and effectively prevents the drive by the design of the nut 311 The abrasion on 31 top of lever, and facilitate the assembly of the drive rod 31.

Referring to Fig. 6, the loading plate 40 is equipped with guide rail 402 backwards to the side of the drive block 32, the guide rail 32 is used In the sliding for ensureing the drive block 32, the loading plate 40 is equipped with multiple equipment mounting hole 401, the equipment mounting hole 401 for facilitating the assembly between the loading plate 40 and external equipment.

Fig. 7 to Fig. 8 is please referred to, is equipped with calibration assemblies in the drive block 32, the calibration assemblies include self-aligning bearing 60 With the retaining ring 61 connecting with the self-aligning bearing 60, the drive block 32 is equipped with bearing groove 321, and the bearing groove 321 uses Waist type groove structure, the self-aligning bearing 60 and the retaining ring 61 are set in the bearing groove 321, pass through the bearing groove 321 Design so that the self-aligning bearing 60 can move in level side direction, and by conjunction with 60 function of self-aligning bearing with Achieve the effect that automatic aligning in about 20 operational process of plunger rod, by the design of the self-aligning bearing 60, effectively It prevents since machining accuracy and rigging error cause the plunger rod 20 and decentraction of the internal plug 22 in friction process, Effectively extend the internal plug 22 to consume, so that the service life of the syringe 100 is greatly improved, specifically, the driving Component uses separate type plunger driving structure, non-interference in the operational process up and down of the plunger rod 20, to meet the column The requirement of concentricity between stopper rod 20 and the internal plug 22.

The self-aligning bearing 60 includes outer ring 601 and the inner ring 602 with the outer ring 601 rotation connection, the inner ring 602 It is fixedly connected with the drive block 32, the outer ring 601 driving synchronous with the drive block 32, the plunger rod 20 is using ceramics Material is made, specifically, the self-aligning ball bearing have two kinds of structures of cylindrical hole and conical bore, the material of retainer have steel plate, Synthetic resin etc., the spherical shape of 601 raceway of outer ring have automatic aligning, can compensate nonconcentricity and shaft deflection is made At error.

Specifically, being led when the internal plug 22 is pushed up by the lock-screw 21 by described in the present embodiment It is moved upwards to column 51, compresses the sealing ring 50, so that the sealing ring 50 will not rotate upwards in the lock-screw 21 Movement causes thickness uneven, to improve 100 service life of syringe, and water leakage situation occurs in the syringe 100, and can To extend the service life of the syringe 100 by finely tuning the lock-screw 21, it is preferred that sealing ring described in the present embodiment 50 quantity is two, by increasing the plunger rod 20 and 50 rubbing surface of sealing ring with two sealing rings 50 Product, to achieve the effect that extend 100 service life of syringe.

In the present embodiment, by the way that the pilot hole and the guide post is arranged between the internal plug 22 and the ontology 10 51 design effectively prevents the sealing ring 50 since the plunger rod 20, the rotation of the lock-screw 21 move upwards Caused thickness is uneven, and then improves the service life of the sealing ring 50 and the syringe 100, and effectively prevent The phenomenon of leakage caused by movement unevenly due to the sealing ring 50, it is effective to increase by the design of the sealing ring 50 Friction area between the plunger column and the infusion slot 101, and then further improve the use of the syringe 100 Service life.

Referring to Fig. 9, the structural schematic diagram of the plunger rod 20a provided for the utility model second embodiment, second reality The structure for applying example and first embodiment is more or less the same, and difference is, plunger rod 20a described in the present embodiment is towards the driving The side of block 32 is equipped with limited post 201, and the limited post 201 is equipped with limiting stand 202, and the limiting stand 202 is connected to described In drive block 32.

In the present embodiment, by being equipped with for the limited post 201, the plunger rod 20a overall structure is effectively extended Length, and then facilitate being connected together between the limiting stand 202 and the drive block 32, the limiting stand 202 uses Truncated cone-shaped structure, by the design of the limiting stand 202, effectively raise the plunger rod 20a and the drive block 32 it Between structure stability, effectively prevent the generation of obscission between the plunger rod 20a and the drive block 32.

Above embodiment described the technical principle of the utility model, these descriptions are intended merely to explain the utility model Principle, and it cannot be construed to the limitation of scope of protection of the utility model in any way.Based on the explanation herein, the skill of this field Art personnel do not need to pay for creative labor other specific embodiments that can associate the utility model, these modes are all It will fall into the protection scope of the utility model.

Claims (10)

1. a kind of syringe, it is characterised in that: what is connect including ontology, with the ontology injects component, injects group set on described Seal assembly between part and the ontology and with the driving assembly injecting component and connecting, the component of injecting includes plunger Bar, the lock-screw connecting with the plunger rod and the internal plug connecting with the lock-screw, the ontology are injected described in The side of component is equipped with infusion slot, and the internal plug is set to the end of the infusion slot, and the internal plug is towards the side of the ontology Equipped with pilot hole, the seal assembly includes guide post and set on the interior sealing ring beyond the Great Wall, and the sealing ring is set to described It is infused between slot and the internal plug, the ontology is equipped with pilot hole, one end of the guide post towards the side of the sealing ring In the pilot hole, the other end is set in the pilot hole, and the driving component includes that driving plate and the driving plate connect The drive rod connect and the drive block being connect with the drive rod.

2. syringe according to claim 1, it is characterised in that: the syringe further includes fixation kit, the fixation Component includes loading plate and the fixation bracket connecting with the loading plate, and the ontology is sticked on the loading plate.

3. syringe according to claim 2, it is characterised in that: one end of the loading plate towards the driving component is set There is drive hole, the drive rod runs through the drive hole, and the driving plate is set in the fixed bracket.

4. syringe according to claim 2, it is characterised in that: the driving component further includes gag lever post, the limit The end of bar is fixedly connected with the driving plate, and the support bracket fastened top is equipped with limiting slot, and the top of the gag lever post is set In in the limiting slot.

5. syringe according to claim 1, it is characterised in that: be equipped with calibration assemblies, the calibration in the drive block Component includes self-aligning bearing and the retaining ring that connect with the self-aligning bearing, and the drive block is equipped with bearing groove, the bearing groove Using waist type groove structure, the self-aligning bearing and the retaining ring are set in the bearing groove.

6. syringe according to claim 5, it is characterised in that: the self-aligning bearing includes outer ring and turns with the outer ring The inner ring of dynamic connection, the inner ring are fixedly connected with the drive block, outer ring driving synchronous with the drive block.

7. syringe according to claim 1, it is characterised in that: the side of the plunger rod towards the drive block is equipped with Limited post, the limited post are equipped with limiting stand, and the limiting stand is connected in the drive block.

8. syringe according to claim 2, it is characterised in that: the loading plate is equipped with backwards to the side of the drive block Guide rail, the guide rail are used to ensure the sliding of the drive block.

9. syringe according to claim 2, it is characterised in that: the loading plate is equipped with multiple equipment mounting hole, institute Equipment mounting hole is stated for the assembly between the loading plate and external equipment.

10. syringe according to claim 1, it is characterised in that: the plunger rod is made of ceramic material.