CN113101458A

CN113101458A - Pre-filled syringe adapting device

Info

Publication number: CN113101458A
Application number: CN202110395422.3A
Authority: CN
Inventors: 王卫; 陈国旗
Original assignee: Nanjing Jusha Display Technology Co Ltd; Nanjing Jusha Medical Technology Co Ltd
Current assignee: Nanjing Jusha Display Technology Co Ltd; Nanjing Jusha Medical Technology Co Ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-07-13

Abstract

The invention discloses a pre-filled syringe adapter device, which comprises a first receiving seat and a movable part, and discloses another pre-filled syringe adapter device, which comprises a transfer push rod, a push rod fixer and a second receiving seat, and the pre-filled syringe adapter device can solve the problem of inconvenient use of a pre-filled contrast agent, avoid the waste of the contrast agent with less capacity, reduce the risk of poor imaging quality caused by manually pushing the contrast agent into a patient, and improve the working efficiency of medical personnel.

Description

Pre-filled syringe adapting device

Technical Field

The invention discloses a pre-filling syringe adapter device, belongs to the technical field of medical instruments, and particularly relates to a pre-filling adapter for a contrast agent syringe used for magnetic resonance system (MR) medical diagnosis.

Background

In the process of assisting the diagnosis of a doctor using magnetic resonance system (MR) imaging, medical staff usually injects contrast agent and physiological saline into a patient in order to enhance the image observation effect. The conventional contrast agent on the market is stored in a glass container similar to a glass saline bottle, and when the contrast agent is used, the sealing cover is opened, and the puncture outfit is punctured to lead the contrast agent out, so that the contrast agent is injected.

The prior market has appeared a product for pre-filling contrast medium by using a small-capacity syringe, and the mode of using the pre-filled contrast medium mainly has two modes, firstly, the mode is similar to the use mode of the conventional contrast medium, the liquid suction function of the contrast medium syringe of injection equipment is utilized, other liquid transfer tools are used for sucking the pre-filled small-capacity contrast medium into a syringe, then the connecting pipeline is used for exhausting air according to the conventional method, and finally the contrast medium is injected into a patient. Medical personnel utilize the syringe of storing the contrast medium to carry out artifical hand push injection, and the extravagant problem of contrast medium transfer has been solved to this kind of injection mode, but the process of hand push is difficult to guarantee the stability of injection speed, and then can influence the imaging effect at final patient inspection position, and the mode of artifical hand push has also greatly increased medical personnel's work load in addition.

Aiming at the problem that a product which utilizes a small-capacity syringe to pre-fill contrast agent, namely a syringe type contrast agent syringe or a peristaltic pump type contrast agent syringe, in the current market can not be directly and efficiently used, and inconvenience is brought to medical staff.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides the pre-filled syringe adapter device, can avoid the waste of contrast agent, solves the problem of inconvenient use of the pre-filled contrast agent, effectively reduces the risk of poor imaging quality caused by manual pushing into a patient, and simultaneously improves the working efficiency of medical personnel.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in a first aspect, the present invention provides a prefilled syringe adapter device comprising:

the first receiving seat is used for receiving a prefilled syringe, and the first receiving seat is detachably connected with injection equipment;

the movable part can be movably clamped on the first receiving seat and used for limiting the movement of the pre-filled contrast agent injector.

With reference to the first aspect, further, a first limiting device is disposed on the first receiving seat.

Furthermore, the movable part is provided with a pit matched with the limiting device to fix the movable part.

Further, the movable part can be clamped with the tail flange of the syringe.

Further, the movable part is provided in plurality.

In a second aspect, the present invention provides a prefilled syringe adapter device comprising: the transfer push rod, the push rod fixer and the second receiving seat that connect in order, the second receiving seat is used for receiving the syringe of filling in advance, the one end of second receiving seat and the one end fixed connection or the integrated into one piece design of push rod fixer, inside the push rod fixer can be passed to the one end of transfer push rod, with the inside piston laminating of syringe of filling in advance.

With reference to the second aspect, further, the transfer push rod includes a joint seat and a front straight rod connected to one end of the joint seat.

Furthermore, a friction ring is arranged at the joint of the joint seat and the front end straight rod.

In the pre-filled syringe adapting device, a groove is formed in one end, away from an injection port of the pre-filled syringe, of the inner parts of the first receiving seat and the second receiving seat, and a tail flange of the pre-filled syringe can be placed in a fit manner;

and a second limiting device is arranged above the axis of the prefilled syringe inside the first receiving seat and the second receiving seat.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a pre-filled syringe adapting device, which can directly use a pre-filled contrast agent through a transfer push rod through an arranged receiving seat, avoid the help of other liquid transfer tools and solve the problem of waste of the contrast agent with less capacity;

the pre-filled syringe adapter device is connected with injection equipment, and the contrast agent is pushed out, so that the risk of poor imaging quality caused by manual hand-push injection can be reduced, and the working efficiency of medical workers is improved.

Drawings

Fig. 1 is a schematic view of a pre-filled syringe adapter of a first embodiment of the present invention installed on an injection device;

FIG. 2 is a schematic view of a first adapter of the present invention assembled with a pre-filled syringe of contrast media;

FIG. 3 is a schematic diagram of the components of a pre-filled contrast media syringe according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a first adapter according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the structure of the movable part of the embodiment of the invention;

FIG. 6 is an exploded view of the moving parts of an embodiment of the present invention;

FIG. 7 is a schematic view of the front half of the adapter assembly of an embodiment of the present invention;

FIG. 8 is a schematic view of the rear half of the adapter device of an embodiment of the present invention;

fig. 9 is a schematic view of a pre-filled syringe adapter of a second embodiment of the present invention installed on an injection device;

FIG. 10 is a schematic diagram of the construction of a second adapter device and a pushrod-free prefilled contrast syringe according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the structure of a pushrod-free prefilled contrast media syringe according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a second adapter of the present invention;

fig. 13 is an exploded view of a second adapter device according to an embodiment of the invention;

FIG. 14 is a schematic structural diagram of a rotary push rod in an embodiment of the present invention;

FIG. 15 is a schematic view of the engagement of the stepped surface with the flange of the syringe tail according to the embodiment of the present invention;

in the figure: 1-injection device, 2-first adapter in combination with a prefilled contrast syringe, 21-first adapter, 218-first receptacle, 217-moving part, 2171-sliding ring, 2172-stop, 2172 a-first recess, 2172 b-second recess, 2172 c-step surface, 211-first ball plunger, 212-second ball plunger, 213-third ball plunger, 214-fourth ball plunger 215-fifth ball plunger, 216-sixth ball plunger, 22-prefilled contrast syringe, 221-push rod, 222-syringe and internal piston, 3-syringe, 4-second adapter in combination with a prefilled contrast syringe without push rod, 41-second adapter, 411-transfer push rod, 4111-engaging seat, 4112-friction ring, 4113-front straight rod, 412-push rod holder, 413-retaining cap, 414-second receptacle, 42-push rod-free prefilled contrast syringe.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby. The invention provides two solutions for a pre-filled syringe adapting device, and the first embodiment of the invention is described in detail below with reference to the accompanying drawings 1-8:

the first embodiment is as follows:

as shown in fig. 1, a schematic diagram of a prefilled syringe adapter device installed on an injection apparatus according to a first embodiment of the present invention includes an injection apparatus 1, a first adapter device and a prefilled contrast syringe assembly 2, and a syringe 3 for containing physiological saline. The first adapter and pre-filled contrast medium injector combination 2 further comprises a first adapter 21 and a pre-filled contrast medium injector 22, as shown in fig. 2, which is a schematic view of the assembly of the first adapter and the pre-filled contrast medium injector, and the first adapter 21 is installed in the same manner as the syringe 3, so that when different contrast media are used, the first adapter 21 is switched to be used with a conventional contrast medium syringe. The first adapter means 21 is mounted on the injection-type device in the same way as the syringe is mounted. The pre-filled contrast syringe 22 is then mounted on the adapter device, thereby enabling the injection of contrast into the patient using the drive assembly of the injection device 1.

Fig. 3 is a schematic diagram of the structure of the prefilled syringe 22, which includes a plunger 221, a syringe and an internal piston 222, wherein one end of the plunger 221 is connected to the piston and can be pushed or pulled along the inside of the syringe.

As shown in fig. 4, the first adapter 21 of the present invention comprises an arc-shaped first receiving seat 218, and a movable member 217 engaged with the first receiving seat 218 and movable between a first position and a second position, wherein the movable member 217 is used for limiting the radial movement of the prefilled contrast syringe 22, and the movable member 217 is preferably of an annular structure. The first ball plunger 211, the second ball plunger 212, the third ball plunger 213, the fourth ball plunger 214, the fifth ball plunger 215 and the sixth ball plunger 216 are embedded in the first receiving seat 218 in a pairwise symmetrical manner, wherein the first ball plunger 211, the second ball plunger 212, the third ball plunger 213 and the fourth ball plunger 214 are positioning parts of a movable part 217, and the positions of the fifth ball plunger 215 and the sixth ball plunger 216 embedded in the first receiving seat 218 are in the direction that the axis is on the upper side after the syringe is placed, so that the pre-filled contrast syringe is conveniently fixed, and the syringe is more stable.

As shown in fig. 5 and 6, which are a schematic structural diagram and an exploded view of the movable member 217, respectively, the movable member 217 is composed of a sliding ring 2171 and a blocking piece 2172 fixedly connected by screws, the blocking piece 2172 is provided with a first recess 2172a and a second recess 2172b which are matched with the first ball plunger 211, the second ball plunger 212, the third ball plunger 213 and the fourth ball plunger 214, and the blocking piece 2172 is further provided with a step surface 2172c, as shown in fig. 15, which is a schematic structural diagram of the step surface of the embodiment of the present invention being clamped with a syringe tail flange, and the step surface 2172c is slightly larger than the prefilled syringe tail flange, so that the movable member 217 can confine the prefilled syringe tail flange in the movable member 217, thereby playing a role of radial fixation. The movable member 217 may freely slide in the space between the second ball plunger 212 and the fourth ball plunger 214.

The installation operation flow of the adapter 21 is as follows: the first adapter 21 is first mounted on the injection device 1 and the movable member 217 is manually pushed to the first and

second ball plungers

211 and 212, at which time the movable member 217 is temporarily fixed under the engagement of the

ball plungers

211 and 212 with the first and

second recesses

2172a and 2172b on the stop 2172. The prefilled contrast syringe 22 is then mounted on the first adapter 21, and the prefilled contrast syringe 22 is fixed by the fifth ball plunger 215 and the sixth ball plunger 216, and the positional relationship of the components is shown in fig. 7. Finally, the movable member 217 is manually pushed to the third ball plunger 213 and the fourth ball plunger 214, and the movable member 217 cannot move any further because the stepped surface 2172c of the stopper 2172 and the flange surface of the prefilled contrast syringe 22 are restricted from each other. On the other hand, under the cooperation of the third ball plunger 213 and the fourth ball plunger 214 with the first recess 2172a and the second recess 2172b on the stop 2172, the movable member 217 is also temporarily fixed, and at this time, the medical staff can perform other operations such as connecting the pipeline and setting the scheme, and the positional relationship between the movable member 217 and the receptacle 218 is as shown in fig. 8, and fig. 7 and 8 are respectively schematic structural views of the front half and the rear half of the adapter of the embodiment of the present invention.

Example two:

the difference between the second embodiment and the first embodiment is that the adapter device is additionally provided with a transfer push rod for force transmission, so that when a medical worker uses the syringe pre-filled with the contrast agent, the medical worker does not need to assemble the push rod provided by a contrast agent manufacturer, and can directly assemble the syringe pre-filled with the contrast agent on the adapter device. The second embodiment of the present invention will be described in detail with reference to fig. 9-14:

fig. 9 is a schematic diagram of the pre-filled syringe adapter of the second embodiment of the present invention installed on an injection device, which includes an injection device 1, a pre-filled contrast syringe assembly 4 without a push rod, and a syringe 3 containing physiological saline. Fig. 10 is a schematic diagram of the structure of the second adapter 41 and the push-rod-free prefilled contrast syringe 42, which includes the second adapter 41 and the push-rod-free prefilled contrast syringe 42, the second adapter 41 is installed in the same manner as the syringe 3, so that the second adapter 41 can be switched to be used with a conventional contrast syringe when different contrast media are used. The second adapter 41 is mounted on the injection device 1 in the same manner as the syringe, and the pre-filled contrast injector 42 without a push rod is mounted on the second adapter 41, so that the contrast can be injected into the patient by the transmission of the injection device 1. Fig. 11 is a schematic diagram of a pushrod-free prefilled contrast syringe 42.

As shown in fig. 12 and 13, which are a schematic structural diagram and an exploded view of the second adapter 41 according to the embodiment of the present invention, the second adapter 41 is composed of a transfer plunger 411, a plunger holder 412, a second receptacle 414 of the push-rod-free pre-filled contrast syringe 42, and a fixing cap 413. The fixing cap 413 is screwed to the second receptacle 414, wherein the fifth ball plunger 215 and the sixth ball plunger 216 are embedded in the second receptacle 414 of the non-push-rod prefilled contrast syringe 42, and are used for fixing the non-push-rod prefilled contrast syringe 42 mounted on the second receptacle 414.

As shown in fig. 14, which is a schematic structural diagram of the transfer rod 411 in the embodiment of the present invention, the transfer rod 411 includes an engaging seat 4111, a friction ring 4112 and a front straight rod 4113, which are sequentially arranged, wherein the engaging seat 4111 is mutually combined with the front end of the rod of the injection apparatus 1, so as to realize the forward and backward movement of the transfer rod 411; the friction ring 4112 functions to maintain a certain tension between the transfer plunger 411 and the inner wall of the plunger holder 412, so that the transfer plunger 411 can move only under the action of an external force; the front end straight rod 4113 is attached to the inner piston of the injector 42 which is not filled with the contrast agent in advance by a push rod, and the contrast agent is pushed out and injected into the body of a patient through a connecting pipe under the action of a driving system of the injection device 1.

The operation flow of the second adapting means 41 is as follows: firstly, the second adapter 41 is mounted on the injection device 1 according to the mounting manner of the syringe 3, at this time, the transfer push rod 411 of the second adapter 41 is attached to the front end of the push rod of the injection device 1, the synchronous movement of the transfer push rod 411 and the push rod of the injection device 1 is conveniently realized, then the push-rod-free pre-filled contrast injector 42 is mounted in the second receiving seat 414 of the second adapter 41, the push-rod-free pre-filled contrast injector 42 is fixed under the action of the fifth ball plunger 215 and the sixth ball plunger 216, as shown in fig. 9, the mounting is in a correct state, and then medical staff can perform other operations such as connecting pipeline and scheme setting.

Example three:

the movable member 217 of the first embodiment may be replaced by other fixed members such as a fixed rolled strip.

The foregoing is only an alternative embodiment of the present invention, and it should be noted that, for those skilled in the art, the specific meaning of the above terms in the present invention can be understood by specific conditions, and several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A prefilled syringe adapter device, comprising:

2. The pre-filled syringe adapter device of claim 1, wherein the first receptacle is provided with a first stop means.

3. The pre-filled syringe adapter of claim 1, wherein the movable member has a recess formed therein that engages a stop to secure the movable member.

4. The pre-filled syringe adapter of claim 1, wherein the movable member is adapted to snap fit the syringe tail flange.

5. The pre-filled syringe adapter device of claim 1, wherein the movable member is provided in plurality.

6. A prefilled syringe adapter device, comprising: the transfer push rod, the push rod fixer and the second receiving seat that connect in order, the second receiving seat is used for receiving the syringe of filling in advance, the one end of second receiving seat and the one end fixed connection or the integrated into one piece design of push rod fixer, inside the push rod fixer can be passed to the one end of transfer push rod, with the inside piston laminating of syringe of filling in advance.

7. The pre-filled syringe adapter of claim 6, wherein the transfer ram includes an adapter and a front rod connected to one end of the adapter.

8. The pre-filled syringe adapter device of claim 7, wherein a friction ring is further provided at the junction of the engagement base and the front straight rod.

9. The pre-filled syringe adapter device according to any one of claims 1 to 8, wherein the first and second receptacles have recesses in their interior at the ends remote from the injection port of the pre-filled syringe to receive the flanges of the rear end of the pre-filled syringe;