CN211068431U

CN211068431U - Push type syringe for anesthesia infusion pump

Info

Publication number: CN211068431U
Application number: CN201921707894.2U
Authority: CN
Inventors: 丁含冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-13
Filing date: 2019-10-13
Publication date: 2020-07-24
Anticipated expiration: 2029-10-13

Abstract

The utility model relates to the technical field of medical instruments, in particular to a push type injector for an anesthesia infusion pump; the utility model comprises an injection tube and a pushing mechanism; the injection tube is internally provided with an injection tube push rod cavity and an inlet and outlet replacement cavity, a piston is arranged in the injection tube push rod cavity, and the side wall of the inlet and outlet replacement cavity is connected with a one-way inlet joint communicated with an anesthetic bottle and a one-way outlet joint communicated with an infusion pump; in the utility model, the pushing mechanism drives the push rod of the injection tube to move, thereby driving the piston in the injection tube to move in the push rod cavity of the injection tube, reducing the air pressure in the push rod cavity of the injection tube, leading the liquid medicine in the anesthetic bottle to enter the inlet and outlet replacement cavity from the one-way inlet joint, then pushing the piston to increase the air pressure in the push rod cavity of the injection tube, leading the liquid medicine in the inlet and outlet replacement cavity to be output from the infusion pump from the one-way outlet joint; the utility model discloses convenient operation need not to extract and then can direct feed liquor reinfusion again to the dress liquid.

Description

Push type syringe for anesthesia infusion pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a propulsion type injector for an anesthesia infusion pump.

Background

When a patient is operated, in order to relieve the pain of the patient in the operation process, the pain of the patient is generally relieved by injecting anesthetic into the patient before the operation, in the prior art, the anesthetic is generally injected into the patient directly through a syringe, and the defects are that the anesthetic effect has time limitation, if the operation time is too long, the operation is not finished, and the anesthetic effect is finished, so that the patient feels pain, if the operation is continued through the syringe, the process is complicated, and if too many anesthetic are injected at one time, the health hidden danger is inevitably generated to the patient, and part of physiological functions are seriously even influenced.

An infusion pump is used as an intelligent infusion device, and is a special medical device which accurately controls the number of infusion drops or the infusion flow rate by using mechanical driving force and ensures that the infusion drops accurately and safely enter a patient, so that the anesthetic is generally continuously delivered to the patient by the infusion pump at present; the infusion pump is inconvenient to operate in the aspects of liquid inlet and liquid outlet, and when liquid inlet is needed, the needle head is pulled out and then liquid medicine is filled into the infusion pump for infusion.

Disclosure of Invention

In order to overcome the above-mentioned not enough, the utility model aims at providing a propulsion type syringe for anesthesia infusion pump, it drives the motion of syringe push rod through pushing mechanism, thereby drive the intraductal piston of syringe at syringe push rod intracavity motion, make syringe push rod intracavity atmospheric pressure reduce, make the interior liquid medicine of anesthesia medicine bottle get into from one-way access joint and import and export the replacement chamber, promote the piston again and make syringe push rod intracavity atmospheric pressure increase, make import and export the replacement intracavity liquid medicine from one-way exit joint from infusion pump output.

The technical proposal of the utility model for solving the technical problem is that:

a push type injector for an anesthesia infusion pump comprises a syringe tube and a push mechanism for pushing the inner part of the syringe tube to move; an injection tube push rod cavity and an inlet and outlet replacement cavity are arranged in the injection tube, and the inner diameter of the injection tube push rod cavity is larger than that of the inlet and outlet replacement cavity; a piston is arranged in the push rod cavity of the injection tube, and the side wall of the inlet and outlet replacement cavity is connected with a one-way inlet joint communicated with an anesthetic bottle and a one-way outlet joint communicated with an infusion pump; the pushing mechanism comprises an injector push rod, and the injector push rod is connected with the piston; a first spring, a first sealing baffle ball, a first sealing retainer ring and a first filter screen sheet are sequentially arranged in the one-way inlet joint, the first spring is connected with the first sealing baffle ball, the first sealing baffle ball is attached to an arc concave surface arranged in the first sealing retainer ring, and the first sealing baffle ball is tightly attached to the first filter screen sheet; the one-way outlet joint is internally sequentially provided with a second sealing check ring, a second sealing stop ball, a second spring and a second filter screen piece, the second sealing stop ball is tightly attached to an arc concave surface in the second sealing check ring, the second sealing stop ball is connected with one end of the second spring, and the other end of the second spring is connected with the second filter screen piece.

As an improvement of the utility model, the pushing mechanism includes base, fixed plate, pendulum rod and rocking handle, the fixed plate is connected on the base, the one end of pendulum rod articulates on the fixed plate, the other end fixed connection of pendulum rod the rocking handle, the other end of pendulum rod still articulates there is the connecting rod, the connecting rod with the syringe push rod is articulated.

As a further improvement, the first fixed plate of fixedly connected with turns over the board on the fixed plate, the pendulum rod articulates first fixed plate turns over on the board.

As a further improvement of the utility model, the second fixed plate fixedly connected with the fixed plate turns over the board, the push rod sleeve is connected with on the first fixed plate turns over the board, the syringe push rod cup joints in the push rod sleeve.

As a further improvement of the utility model, the fixed plate is fixedly connected with a fixed sleeve, and the injection tube is sleeved in the fixed sleeve.

As a further improvement of the utility model, the swing rod is L type.

As a further improvement of the utility model, a rubber sleeve is sleeved on the oscillating bar.

As a further improvement of the utility model, pushing mechanism includes handle, handle depression bar and the articulated lug of handle depression bar, the one end of handle with one side of injection syringe is connected, the one end of the articulated lug of handle depression bar with the opposite side of injection syringe is connected, the other end of the articulated lug of handle depression bar with the handle depression bar is articulated, be provided with the compression leg on the handle depression bar, the compression leg with the injector push rod is articulated.

As a further improvement of the utility model, the push rod of the injector is I-shaped.

As a further improvement of the utility model, a push rod baffle is arranged at the joint of the injector push rod and the piston.

In the utility model, the pushing mechanism drives the push rod of the injection tube to move, thereby driving the piston in the injection tube to move in the push rod cavity of the injection tube, reducing the air pressure in the push rod cavity of the injection tube, leading the liquid medicine in the anesthetic bottle to enter the inlet and outlet replacement cavity from the one-way inlet joint, then pushing the piston to increase the air pressure in the push rod cavity of the injection tube, leading the liquid medicine in the inlet and outlet replacement cavity to be output from the infusion pump from the one-way outlet joint; the utility model discloses convenient operation need not to extract and then can direct feed liquor reinfusion again to the dress liquid.

Drawings

For the purpose of illustration, the invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a one-way inlet joint of the present invention;

FIG. 3 is a schematic structural view of the one-way outlet joint of the present invention;

fig. 4 is a schematic structural view of the injection tube of the present invention;

fig. 5 is a schematic view of the internal structure of the injection tube of the present invention;

fig. 6 is a schematic structural diagram of a first embodiment of the present invention;

fig. 7 is a first state diagram according to a first embodiment of the present invention;

fig. 8 is a state diagram of a second embodiment of the present invention;

fig. 9 is a state diagram of a third embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second embodiment of the present invention;

fig. 11 is a schematic internal structural view of a second embodiment of the present invention;

fig. 12 is a plan view of a second embodiment of the present invention;

fig. 13 is a first schematic view of the interior of the syringe according to the second embodiment of the present invention;

fig. 14 is a second schematic view of the inside of the injection tube according to the second embodiment of the present invention;

reference numerals: 1-injection tube, 11-injection tube push rod cavity, 12-inlet-outlet replacement cavity, 13-piston, 14-one-way inlet joint, 141-first spring, 142-first sealing baffle ball, 143-first sealing baffle ring, 144-first filter screen sheet, 15-one-way outlet joint, 151-second sealing baffle ring, 152-second sealing baffle ball, 153-second spring, 154-second filter screen sheet, 2-pushing mechanism, 21-injector push rod, 22-base, 23-fixing plate, 231-first fixing plate turning plate, 232-second fixing plate turning plate, 233-fixing sleeve, 234-push rod sleeve, 24-swing rod, 25-rocking handle, 26-connecting rod, 3-anesthetic bottle, 31-handle, 32-handle pressure rod, 33-handle compression bar hinged lug, 34-compression column, 35-push rod baffle and 4-infusion pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 14, the push type injector for anesthesia infusion pump of the present invention comprises a syringe 1 and a pushing mechanism 2 for pushing the syringe 1 to move inside.

As shown in fig. 1, 4 and 5, an injection tube push rod cavity 11 and an inlet and outlet replacement cavity 12 are arranged in the injection tube 1, and the inner diameter of the injection tube push rod cavity 11 is larger than that of the inlet and outlet replacement cavity 12; a piston 13 is arranged in the injection tube push rod cavity 11, and the side wall of the inlet and outlet replacement cavity 12 is connected with a one-way inlet joint 14 communicated with the anesthetic bottle 3 and a one-way outlet joint 15 communicated with the infusion pump 4.

The pushing mechanism 2 comprises a syringe push rod 21, the syringe push rod 21 being connected to the piston 13.

As shown in fig. 2, a first spring 141, a first sealing baffle ball 142, a first sealing baffle ring 143 and a first screen sheet 144 are sequentially arranged in the one-way inlet joint 14, the first spring 141 is connected with the first sealing baffle ball 142, the first sealing baffle ball 142 is tightly attached to an arc concave surface of the first sealing baffle ring 143, and the first sealing baffle ring 143 is tightly attached to the first screen sheet 144.

As shown in fig. 3, a second sealing retainer ring 151, a second sealing retainer ball 152, a second spring 153 and a second screen sheet 154 are sequentially arranged in the one-way outlet connector 15, the second sealing retainer ball 152 is tightly attached to the arc concave surface in the second sealing retainer ring 151, the second sealing retainer ball 152 is connected with one end of the second spring 153, and the other end of the second spring 153 is connected with the second screen sheet 154.

In the utility model, the pushing mechanism 2 drives the syringe push rod 21 to move, so as to drive the piston 13 in the syringe 1 to move in the syringe push rod cavity 11, so that the air pressure in the syringe push rod cavity 11 is reduced, the liquid medicine in the anesthetic bottle 3 enters the inlet and outlet replacement cavity 15 from the one-way inlet joint 14, and then the piston 13 is pushed so as to increase the air pressure in the syringe push rod cavity 11, so that the liquid medicine in the inlet and outlet replacement cavity 12 is output from the infusion pump 4 from the one-way outlet joint 15; the utility model discloses convenient operation need not to extract and then can direct feed liquor reinfusion again to the dress liquid.

Before the anesthesia of the infusion pump is conveyed, a nurse is required to inject anesthetic liquid medicine into the infusion pump through the syringe, the needed dosage can be reached usually by injecting for a plurality of times, the injection rod can be pushed only by injecting into the infusion pump through the syringe with large force, and the injection process can not be effectively and rapidly completed considering that the nurse is easy to exhaust, lack of strength and other phenomena in the common injection process of women usually.

The first embodiment provides a first embodiment, the first embodiment adopts a rocker arm type, the pushing mechanism 2 in the first embodiment includes a base 22, a fixing plate 23, a rocker 24 and a rocker handle 25, the fixing plate 23 is connected to the base 22, one end of the rocker 24 is hinged to the fixing plate 23, the other end of the rocker 24 is fixedly connected to the rocker 25, the other end of the rocker 24 is hinged to a connecting rod 26, the connecting rod 26 is hinged to the syringe push rod 21, the fixing plate 23 is fixedly connected to a first fixing plate turning plate 231, the rocker 24 is hinged to a first fixing plate turning plate 233, the fixing plate 23 is fixedly connected to a second fixing plate turning plate 232, the push rod 21 is connected to a push rod 32, the push rod 21 is connected to a push rod 21, the push rod 21 is connected to a push rod 32, the push rod 21 is connected to a push rod 21, the push rod 21 is connected to a push rod 21, the syringe 2 is connected to a syringe, the syringe 2, the syringe 2 is a syringe, the syringe is a syringe, the.

The beneficial effects of the first embodiment are as follows:

1. the crank handle 25 which is extended is adopted to drive the crank connecting rod to axially move, and the structure is a labor-saving lever, compared with a labor-saving lever structure which directly controls the push-pull injector push rod manually, the labor can be greatly saved, and the condition that medical staff are exhausted after pushing and pulling the injector push rod 21 for many times is avoided.

2. The outer wall of the injection tube 1 is simultaneously communicated with the one-way outlet connector 15 and the one-way inlet connector 14, the one-way outlet connector 15 and the one-way inlet connector 14 are respectively internally provided with a corresponding direction limiting structure, so that anesthetic can be sucked from the anesthetic bottle 3 through the one-way inlet connector 14 when a push rod of an injector in the injection tube 1 is pulled back, the sucked anesthetic can be injected into the infusion pump 4 when the push rod 21 of the injector is pushed forward, the one-way inlet connector 14 and the one-way outlet connector 15 alternately suck and inject the anesthetic when the push rod is pushed and pulled in an axial reciprocating manner, and the situation that a needle needs to be withdrawn after the injection is completed by the conventional injector to suck the anesthetic again and then to be inserted into the infusion pump again is avoided.

3. The structure of the crank connecting rod which is driven to axially move by adopting the prolonged rocking handle 25 is a labor-saving lever, and compared with a labor-saving lever structure which directly pushes and pulls the push rod of the injector by manual control, the structure can greatly save physical strength; the condition that medical personnel exhaust after pushing and pulling the push rod of the syringe for many times is avoided.

4. The syringe push rod cavity 11 with the larger inner diameter is communicated with the inlet and outlet replacement cavity 12 with the smaller inner diameter in the syringe 1, and a step end face is arranged between the syringe push rod cavity 11 and the inlet and outlet replacement cavity 12 to enable the axial movement of the syringe push rod 21 to play a stroke limiting role, so that medical personnel can clearly perceive the push rod to move and cling to the bottom of the syringe push rod cavity when shaking the rocking handle 25.

5. The first fixing plate turning plate 231 and the second fixing plate turning plate 232 adopted by the fixing plate 23 are formed by vertically turning upwards the lateral edges or the internal cutting plates of the fixing plate 23, so that the fixing plate 23 can adopt a metal plate punch forming mode in the process, the manufacturing process is simple, fast and efficient, and the cost can be greatly reduced.

As shown in fig. 10 to 14, the present invention provides a second embodiment, in which the pushing mechanism 2 includes a handle 31, a handle pressing rod 32 and a handle pressing rod hinge projection 33, one end of the handle 31 is connected to one side of the injection tube 1, one end of the handle pressing rod hinge projection 33 is connected to the other side of the injection tube 1, the other end of the handle pressing rod hinge projection 33 is hinged to the handle pressing rod 32, a pressing column 34 is disposed on the handle pressing rod 32, and the pressing column 34 is hinged to the injector push rod 21; the injector push rod 21 is in an I shape; a push rod baffle 35 is arranged at the joint of the injector push rod 21 and the piston 13; specifically, in the second embodiment, the crank link structure and the syringe related to the syringe push rod may be replaced by a second scheme, the length of the syringe is shorter than that of the syringe in the first scheme, the syringe 1 is also divided into a syringe push rod cavity 11 and an inlet/outlet replacement cavity 12, the inner diameter of the syringe push rod tube 11 is larger, the inner diameter of the inlet/outlet replacement cavity 12 is smaller, a step end surface is arranged between the syringe push rod cavity 11 and the inlet/outlet replacement cavity 12, a handle 31 and a handle press rod hinge projection 33 are vertically and fixedly connected to the outer wall of the upper end port of the syringe push rod cavity 11 at 180 degrees, the handle 31 is longer and has a strip shape, the lower end edge is designed to be a circular arc curved surface, the handle press rod hinge projection 33 is hinged to a handle press rod 32, the rear section of the handle press rod 32 is a straight section, and the front section is bent at a certain angle relative to the circular arc of the rear section, so that when the handle press rod 32 is hinged to The rear end of the rod 32 can be away from the handle 31 by a certain distance, the edge of the straight section at the rear end of the handle pressing rod 32 is also designed into a circular arc curved surface, the circular arc curved surface matched with the edge of the lower end of the handle 31 is convenient for medical personnel to hold the lower end of the handle pressing rod 32 and is vertically and fixedly connected with a pressing column 34, the lower end of the pressing column 34 is hinged with an injector push rod 21, and the lower end of the injector push rod 21 is clamped and sleeved with a piston 13 by adopting a push rod baffle 35 of an I-; when the handle pressure lever 32 and the handle 31 are in a parallel state, the injector push rod 21 drives the piston 13 to be positioned at the bottom of the injection tube push rod cavity 11, the lower end surface of the piston 13 is tightly attached to the injection tube push rod cavity 11 and the step end surface of the inlet and outlet replacement cavity 12, and the injector push rod 21 is hinged with the pressure column in a 180-degree state; when the handle pressure lever 32 is lifted up and down to enable the handle pressure lever 32 to swing up and down by taking a hinge point as a rotating shaft, the injector push rod 21 can be driven by the pressure column 34 to drive the piston 13 to move back and forth in the axial direction inside the injector push rod cavity 11, the injector push rod 21 is axially guided by the piston 13 in the injector push rod cavity 11, in the process that the injector push rod 21 is driven by the handle pressure lever 32 to move up and down, the hinge angle between the pressure column 34 and the injector push rod 21 is changed all the time, the injector push rod 21 can move axially all the time due to the hinge connection relationship, the unidirectional outlet joint 15 and the unidirectional inlet joint 14 are fixedly and integrally communicated with the outer wall area of the injection tube 1 corresponding to the replacement inlet/outlet cavity 12 respectively, the unidirectional outlet joint 15 and the unidirectional inlet joint 14 are distributed on the same height of the outer wall of the injection tube at an angle of 90 degrees, and the unidirectional limiting structures inside the unidirectional outlet joint 15 and.

The second embodiment has the beneficial effects that: the handle 31 and the handle pressure lever 32 in the hinged state are held and pressed down to form a labor-saving lever to drive the injector push rod 21 to be pressed down, and the injector push rod 21 and the pressure column 34 are hinged in a way that the injector push rod 21 can always axially move under the guiding effect of the injection tube push rod cavity 11.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A push type injector for an anesthesia infusion pump is characterized by comprising a syringe and a pushing mechanism for pushing the inner part of the syringe to move; an injection tube push rod cavity and an inlet and outlet replacement cavity are arranged in the injection tube, and the inner diameter of the injection tube push rod cavity is larger than that of the inlet and outlet replacement cavity; a piston is arranged in the push rod cavity of the injection tube, and the side wall of the inlet and outlet replacement cavity is connected with a one-way inlet joint communicated with an anesthetic bottle and a one-way outlet joint communicated with an infusion pump; the pushing mechanism comprises an injector push rod, and the injector push rod is connected with the piston; a first spring, a first sealing baffle ball, a first sealing retainer ring and a first filter screen sheet are sequentially arranged in the one-way inlet joint, the first spring is connected with the first sealing baffle ball, the first sealing baffle ball is attached to an arc concave surface arranged in the first sealing retainer ring, and the first sealing retainer ring is tightly attached to the first filter screen sheet; the one-way outlet joint is internally sequentially provided with a second sealing check ring, a second sealing stop ball, a second spring and a second filter screen piece, the second sealing stop ball is tightly attached to an arc concave surface in the second sealing check ring, the second sealing stop ball is connected with one end of the second spring, and the other end of the second spring is connected with the second filter screen piece.

2. The push type syringe for the anesthesia infusion pump according to claim 1, wherein the push mechanism comprises a base, a fixed plate, a swing rod and a rocking handle, the fixed plate is connected to the base, one end of the swing rod is hinged to the fixed plate, the other end of the swing rod is fixedly connected to the rocking handle, the other end of the swing rod is further hinged to a connecting rod, and the connecting rod is hinged to a syringe push rod.

3. The push type syringe for an anesthesia infusion pump of claim 2, wherein a first fixed plate flap is fixedly connected to said fixed plate, and said swing link is hinged to said first fixed plate flap.

4. The push type syringe for an anesthesia infusion pump of claim 3, wherein said fixed plate further comprises a second fixed plate flap fixedly connected thereto, said first fixed plate flap is connected to a push rod sleeve, and said syringe push rod is sleeved in said push rod sleeve.

5. The push-type injector for anesthesia infusion pumps of claim 4, wherein a retaining sleeve is further fixedly attached to said retaining plate, and said syringe sleeve is sleeved within said retaining sleeve.

6. The push syringe for an anesthesia infusion pump of claim 2, wherein said rocker arm is shaped as L.

7. The push type injector for anesthesia infusion pumps of claim 2, wherein a rubber sleeve is sleeved on said swing link.

8. The push type injector for the anesthesia infusion pump of claim 1, wherein the push mechanism comprises a handle, a handle pressure bar and a handle pressure bar hinge projection, one end of the handle is connected with one side of the injection tube, one end of the handle pressure bar hinge projection is connected with the other side of the injection tube, the other end of the handle pressure bar hinge projection is hinged with the handle pressure bar, a compression column is arranged on the handle pressure bar, and the compression column is hinged with the injector push rod.

9. The push syringe for an anesthesia infusion pump of claim 8, wherein said syringe plunger is i-shaped.

10. The push type syringe for an anesthesia infusion pump of claim 9, wherein a push rod baffle is provided at the connection of said syringe push rod and said piston.