CN206543270U - A kind of Ophthalmological injector - Google Patents

Abstract

The utility model discloses a kind of Ophthalmological injector, including accommodating cylinder, piston piece, piston piece is divided into drug storage chamber and waste liquid chamber by cylinder is accommodated, it is connected with piston piece through waste liquid chamber and extends to the external push rod of accommodation tube, the termination of push rod is fixed with push pedal, the termination of drug storage chamber is fixed with the fluid injection syringe needle connected with drug storage chamber inner chamber, and the bottom outer wall of waste liquid chamber is connected with the top of imbibition syringe needle, waste liquid chamber by pipette is fixed with automatic air pressure bascule；Automatic air pressure bascule includes being fixed on the lower vertical tube connected at the top of waste liquid chamber and with waste liquid chamber inner chamber, is fixed on the upper vertical tube connected at the top of lower vertical tube and with lower vertical tube, the internal diameter of upper vertical tube is less than the internal diameter of lower vertical tube, gas shutoff component is movably set with upper vertical tube, the inwall of lower vertical tube is fixed with the flexible support meanss for being fixed with and being connected with gas shutoff component at the top of at least one mounting seat, mounting seat.Its advantage is：It is firm in structure, practical.

Description

A kind of Ophthalmological injector

Technical field

The utility model is related to a kind of Ophthalmological injector.

Background technology

Clinical ophthalmology is performed the operation, and generally eye is rinsed, and is removed for cataract even more important in operation.It is general next Say, it is preoperative to be rinsed sterilization, more to clear up the surface of a wound in time in art.

Chinese patent 201120320118.4 discloses a kind of novel ophthalmic inspirator.The novel ophthalmic inspirator includes tail End seal enclosed ejector sleeve, the piston being arranged on inside closed ejector sleeve, the push rod for penetrating closed ejector sleeve tail end and being connected with piston, What one end was connected in the middle part of closed ejector sleeve and was connected outer draw connecting tube, sets draw the connecting tube other end outside first hollow Syringe needle, the second hollow pinhead for being arranged on closed ejector sleeve top, wherein, first hollow pinhead and or the second hollow needle The top of head is spherical structure, and is provided with multiple open-works.The utility model is simple in construction, but efficiently solves ophthalmologic operation The problem of safely and effectively part tissue of eye being cleaned in preceding and operation wound clearing, meanwhile, cost is relatively low, easy to use.But the practicality is new After liquid medicine is injected into eyes during type use, impurity, meeting when liquid medicine is sucked out of first hollow pinhead can be participated in liquid medicine First hollow pinhead is blocked so that user promotes piston relatively elaborate, it is more serious also to cause the utility model to cause damage, Therefore poor practicability.

Utility model content

Problem to be solved in the utility model is to provide a kind of Ophthalmological injector firm in structure, practical.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of Ophthalmological injector, including hold Receive cylinder, the accommodation tube body activity is provided with piston piece, the piston piece by the receiving cylinder be divided into drug storage chamber and It is connected with waste liquid chamber, the piston piece through the waste liquid chamber and extends to the external push rod of the accommodation tube, the push rod Termination be fixed with push pedal, the termination of the drug storage chamber is fixed with the fluid injection syringe needle connected with the drug storage chamber inner chamber, described useless The bottom outer wall of liquid room is connected with imbibition syringe needle by pipette, it is characterised in that be fixed with the top of the waste liquid chamber automatic Air-pressure balancing device；The automatic air pressure bascule includes being fixed at the top of the waste liquid chamber and connected with the waste liquid chamber inner chamber Logical lower vertical tube, the upper vertical tube connected at the top of the lower vertical tube and with the lower vertical tube is fixed on, the internal diameter of the upper vertical tube is small In being movably set with gas shutoff component in the internal diameter of the lower vertical tube, the upper vertical tube, the inwall of the lower vertical tube is fixed with least The flexible support meanss being connected with the gas shutoff component are fixed with the top of one mounting seat, the mounting seat, it is described Support meanss include the lower sealing plate being fixed in the mounting seat, the seal pipe being fixed at the top of the lower sealing plate, fixation Activity is set in the push rod that upper sealing panel, top at the top of the seal pipe are connected with the gas shutoff component, the seal pipe There is sliding seat, the bottom of the push rod is connected through the upper sealing panel and with the sliding seat, is located on the push rod described Recovery spring is arranged between upper sealing panel and sliding seat, the lower sealing plate and sliding seat are connected by lower recovery spring.

Preferably, above-mentioned Ophthalmological injector, connects wherein the bottom of the waste liquid chamber is fixed with the waste liquid chamber inner chamber Control valve is set on logical drain pipe, the drain pipe.

Preferably, above-mentioned Ophthalmological injector, wherein the gas shutoff component includes the plectane being connected with the push rod, it is described The outer wall of plectane is provided with sealing ring, and the sealing ring is contacted with the inwall of the upper vertical tube.

Preferably, above-mentioned Ophthalmological injector, sets wherein the outer wall of the accommodation tube body is provided with window, the window It is equipped with clear glass.

It is of the present utility model to have the technical effect that：When imbibition syringe needle is blocked, user promotes piston piece to make Negative pressure is formed in waste liquid chamber, extraneous air can promote gas shutoff component to enter in lower vertical tube, extraneous air from upper vertical tube, Lower vertical tube is entered in waste liquid chamber, so that air pressure balance in waste liquid chamber is maintained, so that user promotes piston piece laborsaving, Avoid the utility model to be damaged so that the utility model is more practical；When waste liquid room pressure recovers normal, support Device band piston part is returned in vertical tube；It is located on push rod and recovery spring is arranged between upper sealing panel and sliding seat, under Sealing plate and sliding seat are connected by lower recovery spring, and such design structure is firm, and causes the elastic performance of support meanss Improve；Upper to recover spring, lower recovery spring sealed in lower sealing plate, seal pipe, the sealing space of upper sealing panel formation, can be with Prevent that recovering spring, lower recovery spring water breakthrough rots.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is Fig. 1 longitudinal sectional view；

Fig. 3 is the longitudinal sectional view of automatic air pressure bascule in Fig. 1；

Fig. 4 is the structural representation of support meanss in Fig. 3；

Fig. 5 is the structural representation of gas shutoff component in Fig. 3.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is further described, so that the utility model Technical scheme be more readily understood and grasp.

As shown in Fig. 1,2,3,4,5, a kind of Ophthalmological injector, including cylinder 1 is accommodated, accommodate and be movably set with cylinder 1 Piston piece 20, piston piece 20 will accommodate cylinder 1 and be divided on drug storage chamber 11 and waste liquid chamber 12, piston piece 20 and be connected with through waste liquid Room 12 simultaneously extends to the push rod 13 accommodated outside cylinder 1, and the termination of push rod 13 is fixed with push pedal 14, and the termination of drug storage chamber 11 is fixed with The fluid injection syringe needle 15 connected with the inner chamber of drug storage chamber 11, the bottom outer wall of waste liquid chamber 12 is connected with imbibition syringe needle by pipette 16 17。

The top of waste liquid chamber 12 is fixed with automatic air pressure bascule 2；Automatic air pressure bascule 2 includes being fixed on waste liquid The top of room 12 and connect with the inner chamber of waste liquid chamber 12 lower vertical tube 21, be fixed on connect at the top of lower vertical tube 21 and with lower vertical tube 21 upper Vertical tube 22, the internal diameter of upper vertical tube 22, which is less than in the internal diameter of lower vertical tube 21, upper vertical tube 22, is movably set with gas shutoff component 3, lower vertical tube 21 inwall is fixed with two mounting seats 4, and the top of mounting seat 4 is fixed with the flexible support being connected with gas shutoff component 3 Device 5.

Support meanss 5 include the lower sealing plate 51 being welded in mounting seat 4, the seal pipe being fixed at the top of lower sealing plate 51 52nd, it is fixed on activity in the push rod 54 that upper sealing panel 53, top and the gas shutoff component 3 at the top of seal pipe 52 are connected, seal pipe 52 Sliding seat 55 is provided with, the bottom of push rod 54 is connected through upper sealing panel 53 and with sliding seat 55, and upper sealing is located on push rod 54 Recovery spring 56 is arranged between plate 53 and sliding seat 55, lower sealing plate 51 and sliding seat 55 are connected by lower recovery spring 57 Connect.

The bottom of waste liquid chamber 12 in the utility model is fixed with the drain pipe 61 connected with the inner chamber of waste liquid chamber 12, drain pipe Control valve 62 is set on 61, the convenient waste liquid by waste liquid chamber 12 is so designed and discharges.

Wherein gas shutoff component 3 includes the plectane 31 being connected with push rod 54, and the outer wall of plectane 31 is provided with sealing ring 32, seals Circle 32 is contacted with the inwall of upper vertical tube 22, and so design causes the sealing property of gas shutoff component 3 to improve.

The outer wall of receiving cylinder 1 in the utility model, which is provided with window, window, is provided with clear glass 8, so sets Meter facilitates the inner case of user's observation receiving cylinder 1.

Certainly, it these are only preferred embodiment of the present utility model, it is non-therefore limit to patent of the present utility model Simple modification and the equivalent structure change for it of scope, all utilization the utility model specifications and schema content institute, all should similarly be wrapped It is contained within scope of patent protection of the present utility model.

Claims (4)

1. a kind of Ophthalmological injector, including cylinder is accommodated, the accommodation tube body activity is provided with piston piece, and the piston piece will The receiving cylinder, which is divided on drug storage chamber and waste liquid chamber, the piston piece, to be connected with through the waste liquid chamber and extends to described The external push rod of accommodation tube, the termination of the push rod is fixed with push pedal, and the termination of the drug storage chamber is fixed with and the drug storage chamber The fluid injection syringe needle of inner chamber connection, the bottom outer wall of the waste liquid chamber is connected with imbibition syringe needle by pipette, it is characterised in that：Institute State and automatic air pressure bascule is fixed with the top of waste liquid chamber；The automatic air pressure bascule includes being fixed on the waste liquid chamber Top and connected with the waste liquid chamber inner chamber lower vertical tube, be fixed on connect at the top of the lower vertical tube and with the lower vertical tube upper Vertical tube, the internal diameter of the upper vertical tube, which is less than in the internal diameter of the lower vertical tube, the upper vertical tube, is movably set with gas shutoff component, described The inwall of lower vertical tube is fixed with the tool for being fixed with and being connected with the gas shutoff component at the top of at least one mounting seat, the mounting seat Flexible support meanss, the support meanss include be fixed in the mounting seat lower sealing plate, be fixed on it is described under it is close The push rod that seal pipe, the upper sealing panel being fixed at the top of the seal pipe, top at the top of shrouding are connected with the gas shutoff component, Sliding seat is movably set with the seal pipe, the bottom of the push rod connects through the upper sealing panel and with the sliding seat Connect, be located on the push rod and recovery spring, the lower sealing plate and slip are arranged between the upper sealing panel and sliding seat Seat is connected by lower recovery spring.

2. Ophthalmological injector according to claim 1, it is characterised in that：The bottom of the waste liquid chamber is fixed with gives up with described Control valve is set on the drain pipe that chamber is connected in liquid room, the drain pipe.

3. Ophthalmological injector according to claim 1, it is characterised in that：The gas shutoff component includes being connected with the push rod Plectane, the outer wall of the plectane is provided with sealing ring, and the sealing ring is contacted with the inwall of the upper vertical tube.

4. Ophthalmological injector according to claim 1, it is characterised in that：The outer wall for accommodating cylinder is provided with window, Clear glass is provided with the window.