CN210330891U

CN210330891U - Syringe device

Info

Publication number: CN210330891U
Application number: CN201920101508.9U
Authority: CN
Inventors: 沈丽君; 陈亦棋; 陶继伟; 毛剑波
Original assignee: Eye Hospital of Wenzhou Medical University
Current assignee: Eye Hospital of Wenzhou Medical University
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2020-04-17
Anticipated expiration: 2029-01-22

Abstract

The utility model discloses an injector device, which comprises a driving unit, an injector and a first sensor, wherein the driving unit is directly connected with the injector or connected with the injector through a transmission mechanism and used for driving the injector to move; the first sensor is connected with the injector and used for sensing the reaction force applied to the injector so as to judge whether the injector contacts human tissues and/or whether the injector passes through the human (eyeball) tissues. The utility model provides an injector device, its structure is retrencied, and the accuracy is high (control accuracy is steerable about 0.01 millimeter), the actual operation of being convenient for.

Description

Syringe device

Technical Field

The utility model relates to an injector device for eyes.

Background

Various ocular diseases such as retinal vascular occlusion, age-related macular degeneration, and retinitis pigmentosa, among others, can lead to severe visual impairment, even blindness. The above diseases can be treated theoretically by intravascular injection of thrombolytic drugs and subretinal injection of functional cells, but the precision and precision of the surgical operation are highly required.

Currently, eye surgery requires high precision devices or equipment to perform.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects in the prior art and providing an injector device.

In order to achieve the purpose, the method is realized by the following technical scheme:

the injector device comprises a driving unit, an injector and a first sensor, wherein the driving unit is directly connected with the injector or connected with the injector through a transmission mechanism and used for driving the injector to move; the first sensor is connected with the injector and used for sensing the reaction force applied to the injector so as to judge whether the injector contacts human tissues and/or whether the injector passes through the human tissues.

Preferably, when the injector injects, the reaction force of the human tissue on the injector sensed by the first sensor is increased, the injector is judged to contact the human tissue; when the injector is judged to continuously move after contacting the human tissue, the first sensor senses that the reaction force applied to the injector is reduced, and the injector is judged to penetrate through the human tissue.

Preferably, when the reaction force of the injector on the human tissue sensed by the first sensor is increased by more than 20% during the injection of the injector, the injector is judged to contact the human tissue; when the injector is judged to contact human tissue, the first sensor senses that the reaction force applied to the injector is reduced by more than 20%, and the injector is judged to penetrate the human tissue.

Preferably, the injector device comprises a displacement frame, the injector is mounted on the displacement frame, and the driving unit is connected to the displacement frame in a driving manner so as to drive the displacement frame to drive the injector to displace.

Preferably, the driving unit includes a first motor for driving the syringe to move linearly, and the first motor is drivingly connected to the displacement frame.

Preferably, the transmission mechanism comprises a driving screw rod, the injector is mounted on a displacement platform, the displacement platform is provided with the driving screw rod, and the displacement frame is in threaded connection with the driving screw rod and moves along with the rotation of a shaft of the driving screw rod.

Preferably, a second sensor is arranged on the first motor for sensing the displacement of the upper part of the displacement frame.

Preferably, the drive unit comprises a second motor for driving the syringe in rotation; the second motor is drivingly connected to the syringe.

Preferably, the first sensor is provided between the second motor and the syringe.

Preferably, the injector device further comprises an injection pump, and the liquid medicine is injected into the injector and the human tissue through the injection pump.

Preferably, the injector is an integrally communicated syringe injector.

Preferably, the injector device further comprises a control device, the control device is in communication connection with the driving unit and a first sensor, the first sensor is used for transmitting a signal to the control device, so that the control device can judge whether the injector contacts human tissues and/or whether the injector passes through the human tissues, and the driving unit is controlled to work according to the judgment result.

Preferably, the transmission mechanism is a screw rod, a screw nut, a gear mechanism, a synchronous belt and/or a chain transmission mechanism.

The utility model discloses syringe device's beneficial effect includes:

1) controlling the injector to be gradually inserted into the eyeball through the first motor, and sensing whether the clamping end of the injector is inserted into eyeball tissues such as retinal blood vessels, retinal layers and the like through the first sensor;

2) sensing the displacement of the first motor through a second sensor to ensure the precision of the displacement of the injector;

3) the direction of the syringe needle is controlled by a second motor aiming at the syringe needle with the bent head end;

4) the injection amount and the injection speed of liquid such as liquid medicine, cell suspension and the like in the injector can be effectively controlled through the injection pump.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of the syringe device of the present invention.

Fig. 2 is a schematic diagram of an internal structure of a displacement platform included in the displacement frame of fig. 1.

Fig. 3 is a block diagram of the control connection of the control device of the injector device of the present invention.

Fig. 4 is a schematic structural diagram corresponding to the second embodiment of fig. 1.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

the first embodiment is as follows:

as shown in fig. 1, an injector device for eyes includes a drive unit, an injector 1, a first sensor 2, a displacement frame 3, a first motor 4, an infusion tube 5, a second motor 6, a displacement table 3b included in the displacement frame 3, and a second sensor 8. Generally, the injector 1 is connected with the driving unit directly or through a transmission mechanism for driving the injector to move; the first sensor 2 is connected with the injector 1 and used for sensing the reaction force applied to the injector to judge whether the injector contacts human tissues and/or whether the injector passes through the human tissues, such as retinal blood vessels, retina layers and other eyeball tissues. Therefore, the injection precision is obviously improved, and the safe injection is ensured.

The structure of the various components of the injector device of the present application is described in detail below:

specifically, the injector device comprises a displacement frame 3, the injector 1 is mounted on the displacement frame 3, and the driving unit is connected to the displacement frame 3 in a driving manner so as to drive the displacement frame 3 to drive the injector 1 to displace.

The drive unit comprises a first motor 4 and a second motor 6, the first motor 4 is a high-precision miniature linear stepping motor (the second motor 6 is a high-precision slow-speed rotating motor, the high-precision stepping motor 4 is in driving connection with the displacement frame 3, the first motor 4 is used for driving the injector to move linearly, the second motor 6 is in driving connection with the injector 1, the second motor 6 is used for driving the injector to rotate, and the first sensor 2 is arranged between the second motor 6 and the injector 1.

Referring to fig. 2, the transmission mechanism includes a driving screw 40, a displacement platform 3b is disposed at the bottom of the displacement frame 3 to drive the displacement frame 3 to displace, the first motor 4 is connected to the displacement platform 3b through the driving screw 40, and the second motor 6 and the injector 1 are horizontally mounted on the displacement frame 3. A driving screw rod 30 is arranged inside the displacement platform 3b, and the displacement frame 3 is screwed on the driving screw rod 30 and moves along with the rotation of the shaft of the driving screw rod 30. Of course, the displacement frame 3 and the displacement platform 3b may also be an integrated displacement device. Preferably, the transmission mechanism is a screw rod, a screw nut, a gear mechanism, a synchronous belt and/or a chain transmission mechanism.

Further, a second sensor 8 is disposed on the first motor 4 for sensing the displacement of the upper portion of the displacement frame 3. The second sensor 8 is a laser displacement sensor, such as a displacement sensor of panasonic HL-G112-A-C5.

The injection syringe 1 is provided with an injection pump 9, liquid medicine is injected into the injection syringe 1 through the injection pump 9, and an infusion tube 5 is connected to the injection pump 9. Preferably, the injector 1 is an integrally connected syringe injector and has an injector needle with a bent head end, and the first sensor 2 may be a mechanical sensor such as Nano17 or FT 25144.

In addition, as shown in fig. 3, in terms of system control, the injector device further includes a control device 99, the control device 99 is in communication connection with the driving unit 98 and the first sensor 2, the control device 99 controls the on/off of the first motor 4 and the second motor 6 included in the driving unit 98, and the first sensor 2 is configured to transmit a signal to the control device 99, so that the control device 99 determines whether the injector 1 contacts a human body (eyeball) tissue and/or whether the injector passes through the human body (eyeball) tissue, and controls the driving unit 98 to operate according to a determination result.

After having the above implementation process, as shown in fig. 1 to 3, the present application may be implemented as follows:

when in actual injection, the first motor 4 and the second motor 6 can be started firstly, and the displacement platform 3b is driven by the first motor 4 to drive the displacement frame 3 to horizontally displace at high precision, so that the injector 1 fixedly arranged on the support 3 can move along with the displacement frame; after the horizontal movement is completed, the injector 1 itself can also be pivoted/rotated by the second motor 6, so that the angular position of the injector 1, e.g. the angular orientation of the needle hole, can be adjusted. In the whole continuous displacement process, the second sensor 8 senses the displacement of the injector 1 on the support 3 in real time through laser, and the precision of the displacement can be controlled to be about 0.01 mm.

Referring to fig. 3, at the moment when the support 3 is continuously displaced so that the injection tip of the injector 1 enters the eyeball, the first sensor 2 immediately senses the contact reaction force therebetween, and feeds back the touch reaction force to the control device 99 to control the first motor 4 and the second motor 6 included in the driving unit 98, so as to immediately stop the operation of the injector 1. Specifically, when the injector injects, the reaction force of the human tissue on the injector 1 sensed by the first sensor 2 increases, and the increase amount is preferably more than 20%, the injector is judged to contact the human tissue; then, after the injector is judged to move continuously after contacting human tissue, the distance for controlling the injector 1 to move continuously can be about 2 to 5 mm, the displacement of the continuous movement can be sensed and controlled by the second sensor 8, i.e. the second sensor 8 is also in communication connection with the control device 99 to maintain signal transmission, and then the control device 99 can accurately control the displacement of the continuous movement, and then when the first sensor 2 senses that the reaction force applied to the injector 1 is reduced, and the reduction is preferably more than 20%, the injector 1 is judged to penetrate through the human tissue, i.e. the needle of the injector 1 enters the inner part of the eyeball, and the control device 99 controls the first motor 4 to stop.

Finally, the liquid medicine is delivered to the syringe 1 through the infusion tube 5 and the syringe pump 9, and the liquid medicine is injected into the eyeball through the injection tip of the syringe 1.

Example two:

on the basis of the first embodiment, the present embodiment is structurally modified, and is different from the first embodiment in that: as shown in fig. 4, the displacement frame 3a (or the displacement platform) is not provided with a high-precision rotating motor, and the first sensor 2a and the whole injector 1a are directly mounted on the displacement frame 3a, i.e. the injector cannot rotate in a fixed axis manner, and only can be displaced in a high-precision manner in the horizontal direction by the displacement platform. Other structures are basically the same as those of the first embodiment, and thus are not described herein.

After the implementation process is completed, the following characteristics of the application can be realized:

the utility model provides an injector device, its structure is retrencied, and the accuracy is high (control accuracy is steerable about 0.01 millimeter), the actual operation of being convenient for.

The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.

Claims

1. The injector device is characterized by comprising a driving unit, an injector and a first sensor, wherein the driving unit is directly connected with the injector or connected with the injector through a transmission mechanism and used for driving the injector to move; the first sensor is connected with the injector and used for sensing the reaction force applied to the injector so as to judge whether the injector contacts human tissues and/or whether the injector passes through the human tissues.

2. The injector device according to claim 1, wherein when the reaction force of the human tissue on the injector sensed by the first sensor is increased when the injector injects, the injector is judged to contact the human tissue; when the injector is judged to continuously move after contacting the human tissue, the first sensor senses that the reaction force applied to the injector is reduced, and the injector is judged to penetrate through the human tissue.

3. The injector device according to claim 2, characterized in that when the reaction force of the injector on the human tissue sensed by the first sensor is increased by more than 20% when the injector injects, the injector is judged to contact the human tissue; when the injector is judged to contact human tissue, the first sensor senses that the reaction force applied to the injector is reduced by more than 20%, and the injector is judged to penetrate the human tissue.

4. The injector device according to claim 1, wherein the injector device comprises a displacement frame, the injector is mounted on the displacement frame, and the driving unit is connected to the displacement frame in a driving manner so as to drive the displacement frame to displace the injector.

5. Injector device according to claim 4, characterized in that the drive unit comprises a first motor for driving the linear movement of the injector, which first motor is drivingly connected to the displacement frame.

6. Injector device according to claim 5, characterized in that the transmission comprises a drive screw, the injector being mounted on a displacement platform provided with a drive screw, the displacement carriage being screwed onto the drive screw and being movable in accordance with the axial rotation of the drive screw.

7. The injector device according to claim 5, wherein a second sensor is provided on the first motor for sensing the displacement of the upper part of the displacement frame.

8. Injector device according to claim 1, characterized in that the drive unit comprises a second motor for driving the injector in rotation; the second motor is drivingly connected to the syringe.

9. The injector device according to claim 8, wherein the first sensor is disposed between the second motor and the injector.

10. The injector device according to claim 1, further comprising a syringe pump by which to inject the liquid medicine into the syringe and human tissue.

11. The injector device according to claim 1, wherein the injector is an integral communicating syringe injector.

12. The injector device according to claim 1, further comprising a control device, wherein the control device is in communication connection with the driving unit and a first sensor, the first sensor is configured to transmit a signal to the control device, so that the control device can determine whether the injector contacts human tissue and/or whether the injector passes through human tissue, and control the driving unit to operate according to the determination result.

13. Injector device according to claim 1, characterized in that the transmission mechanism is a screw, a screw nut, a gear mechanism, a timing belt and/or a chain transmission mechanism.