WO2022170956A1

WO2022170956A1 - Device and method for adjusting torque of push handle of syringe, and injection pump

Info

Publication number: WO2022170956A1
Application number: PCT/CN2022/073573
Authority: WO
Inventors: 隋海龙; 李宇航; 徐宏
Original assignee: 杭州堃博生物科技有限公司
Priority date: 2021-02-09
Filing date: 2022-01-24
Publication date: 2022-08-18

Abstract

A device and method for adjusting a torque of a push handle of a syringe, and an injection pump. The device for adjusting a torque of a push handle of a syringe comprises: a controller (10), a pushing device (20), and a pressure sensor (32) provided in the push handle (31) of the syringe (30). The controller (10) is connected to the pushing device (20) and the pressure sensor (32). The pushing device (20) is further connected to the push handle (31). The pushing device (20) is used for pushing the push handle (31) of the syringe for injection. The pressure sensor (32) is used for measuring the pressure applied by the pushing device (20) onto the push handle (31) of the syringe. The controller (10) is used for determining whether a pressure value reaches a preset pressure value, and if not, controlling the pushing device (20) to increase an output power to a preset power value, so as to increase the torque and the thrust of the push handle (31). The device and method for adjusting a torque of a push handle of a syringe, and the injection pump can quickly and accurately adjust the torque and the thrust of the push handle of the syringe.

Description

Syringe push handle torque adjustment device, method and syringe pump

technical field

Embodiments of the present invention relate to the field of radio frequency technology, and in particular, to a device and method for adjusting the torque of a push handle of a syringe, and a syringe pump.

Background technique

Radiofrequency ablation is a technology that accurately delivers radiofrequency energy to the area to be ablated for minimally invasive ablation under image guidance. During the ablation process, a syringe pump needs to be used to inject a specific liquid into the object to be ablated through the ablation catheter, so as to maintain the stability of the temperature and impedance of the object to be ablated.

In the prior art, the injection process of the syringe generally directly controls the injection speed through manual monitoring or control equipment. The control precision is rough and the adjustment speed is slow, which cannot meet the injection precision requirement during the radio frequency operation.

technical problem

Embodiments of the present invention provide a device, method and syringe pump for adjusting the push handle torque of a syringe, which can quickly and accurately adjust the push handle torque of the syringe.

technical solutions

One aspect of the embodiments of the present invention provides a push handle torque adjustment device for a syringe, applied to a syringe pump, comprising: a controller, a push device, and a pressure sensor disposed in the push handle of the syringe; the controller is connected to the push handle device and the pressure sensor, the push device is also connected to the push handle; wherein the push device is used to push the syringe push handle to inject; the pressure sensor is used to detect when the push device is in the syringe The pressure applied on the push handle; the controller is used to judge whether the pressure value reaches the preset pressure value, and if not, then control the push device to increase the output power to the preset power value to increase the push handle torque.

One aspect of the embodiments of the present invention further provides a syringe pump, including: the above push handle torque adjustment device.

One aspect of the embodiments of the present invention further provides a method for adjusting the torque of a push handle of a syringe, which is applied to a syringe pump, comprising: when the push device of the syringe pump pushes the push handle of the syringe, obtaining the torque of the push handle of the syringe. The push pressure value collected by the pressure sensor; judge whether the pressure value reaches the preset pressure value; if not, control the push device to increase the output power to the preset power value, so as to increase the push handle torque.

One aspect of the embodiments of the present invention also provides a push handle torque adjustment device for a syringe, including:

an acquisition module, configured to acquire the pushed pressure value collected by the pressure sensor in the push handle when the push device of the syringe pump pushes the push handle of the syringe;

a judgment module for judging whether the pressure value reaches a preset pressure value;

The control module is configured to control the pushing device to increase the output power to a preset power value if not reached, so as to increase the torque of the push handle.

An aspect of an embodiment of the present invention further provides an electronic device, including: a memory and a processor; the memory stores executable program codes; the processor coupled with the memory invokes all the data stored in the memory. The executable program code is described, and the XX method provided by the above embodiment is executed.

An aspect of an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, executes the XX method provided by the foregoing embodiments.

beneficial effect

It can be known from the above embodiments of the present invention that the push handle torque adjustment device of the syringe includes a controller, a push device and a pressure sensor. The pressure sensor is arranged in the push handle of the syringe. When the push device pushes the push handle of the syringe, the pressure sensor Collect the pushing pressure value, when the pressure value does not reach the preset pressure value, the controller controls the pushing device to increase the output power to the preset power value, so as to increase the torque of the push handle and increase the push to the syringe force, complete the injection operation, realize fast and accurate response to the adjustment of the push handle torque, and improve the efficiency and accuracy of the operation.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of the hardware structure of a push handle torque adjustment device of a syringe provided by an embodiment of the present invention;

Fig. 2 is the hardware structure schematic diagram of the push handle torque adjustment device of the syringe provided by another embodiment of the present invention;

3 is a schematic diagram of the hardware structure of a push handle torque adjustment device of a syringe provided by another embodiment of the present invention;

4 is a schematic diagram of the hardware structure of a push handle torque adjustment device of a syringe provided by another embodiment of the present invention;

Fig. 5 is the realization flow chart of the push handle torque adjustment of the syringe provided by an embodiment of the present invention;

Fig. 6 is the realization flow chart of the push handle torque adjustment of the syringe provided by another embodiment of the present invention;

7 is a schematic structural diagram of a module of a push handle torque adjustment device of a syringe provided by an embodiment of the present invention.

Embodiments of the present invention

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1 , a schematic structural diagram of a push handle torque adjustment device of a syringe provided by an embodiment of the present invention. The push handle torque adjustment device of the syringe can be used to increase the rotational driving force of the push handle by adjusting the push handle torque of the syringe of the syringe pump. As shown in FIG. 1 , the push handle torque adjustment device includes: a syringe pump controller 10 , a push device 20 and a pressure sensor 32 arranged in the push handle 31 of the syringe 30 ;

The controller 10 is connected to the push device 20 and the pressure sensor 32, and the push device 20 is also connected to the push handle 31. When receiving the injection signal sent by the controller 10 of the syringe pump, the push handle 31 of the syringe 30 is pushed to inject. The radio frequency operating system includes an interconnected radio frequency instrument and a syringe pump. The radio frequency instrument triggers the controller 10 of the syringe pump to send various control signals including injection signals to the corresponding devices in the syringe pump.

The pressure sensor 32 is used to detect the pressure exerted by the push device 20 on the push handle 31;

The controller 10 is used for judging whether the pressure value reaches the preset pressure value, and if not, then controls the pushing device 20 to increase the output power to the preset power value, so as to increase the torque of the push handle 31, that is, increase the output power by increasing the output power. Great pressure on the push handle 31;

The pushing device 20 is also used to increase the output power to a preset power value under the control of the controller 10 , so as to increase the torque of the push handle 31 and increase the pressure of the push handle 31 .

In the embodiment of the present invention, the push handle torque adjustment device of the syringe includes a controller, a push device and a pressure sensor. The pressure sensor is arranged in the push handle of the syringe. When the push device pushes the push handle of the syringe, the pressure sensor collects the push When the pressure value does not reach the preset pressure value, the controller controls the pushing device to increase the output power to the preset power value, so as to increase the torque of the push handle and increase the pushing force to the syringe, complete The injection operation realizes quick and accurate response to the adjustment of the push handle torque, which improves the efficiency and accuracy of the operation.

Further, referring to FIG. 2, FIG. 2 is a schematic structural diagram of a push handle torque adjustment device for a syringe provided by another embodiment of the present invention. The push device 20 includes a motor 21 and a deceleration mechanism 22, and the deceleration mechanism 22 includes a driving gear 221 and a driven gear 221. The gear 222 , the driving gear 221 and the driven gear 222 mesh with each other, and the number of teeth of the driven gear 222 is greater than the number of teeth of the driving gear 221 . The adjusting device further includes a guide shaft 50 , one end of the guide shaft 50 is connected to the push handle 31 , and the other end is connected to the drive shaft of the motor 21 . The speed reduction mechanism 22 can buffer the speed change of the motor 21 .

The motor 21 is fixed on the fixing plate 24, and the pushing device 20 controls the drive shaft of the motor 21 to push the push handle 31 of the syringe 30 according to the control signal sent by the controller 10, and pushes the syringe 30 under the lateral constraint of the guide shaft 50 of the syringe pump , so that the syringe 30 will not deviate from the existing direction when advancing.

In the embodiment of the present invention, the push handle torque adjustment device of the syringe includes a controller, a motor and a pressure sensor, the pressure sensor is arranged in the push handle of the syringe, and the pressure sensor collects the pressure value of the motor pushing the push handle, when the pressure value When the preset pressure value is not reached, the controller controls the pushing device to increase the output power to the preset power value, so as to increase the torque of the push handle, increase the pushing force to the syringe, complete the injection operation, and realize fast and accurate operation. Responsive to the adjustment of the push handle torque, improving the efficiency and accuracy of the operation. Moreover, the syringe pump has a guide shaft of the syringe, and when the syringe is pushed, it can be completed under the constraint of the guide shaft, so as to prevent the unsmooth injection process caused by deviation from the pushing direction.

3 and 4, FIG. 3 and FIG. 4 are schematic structural diagrams of a push handle torque adjustment device for a syringe provided by another embodiment of the present invention. Further, the push handle torque adjustment device further includes: a contact magnifying part 33;

The contact amplifying part 33 is provided between the pressure sensor 32 and the piston handle 40 of the syringe 30 for increasing the force contact area between the pressure sensor 32 and the piston handle 40 . The front-end contact area of the pressure sensor 32 is very small. If it acts directly on the piston handle 40 of the syringe 30, the contact is easy to fail. Therefore, a contact amplification part 33 is provided to increase the contact between the front-end contact of the pressure sensor 32 and the piston handle 40. The area of the force is increased, the effective contact is improved, and the pressure is transmitted accurately.

The contact amplifying part 33 includes a first end and a second end, the first end abuts against the plunger handle 40 of the syringe, the second end abuts against the pressure sensor 32, and the cross-sectional area of the first end is larger than that of the second end; The contact area between the first end and the piston handle 40 is larger than the contact area between the second end and the pressure sensor 32 .

Further, the push handle torque adjustment device also includes: a return spring 34;

The return spring 34 is provided on the outer surface of the contact magnifying part 33, when the syringe 30 is installed in the syringe groove, the contact magnifying part 33 and the return spring 34 are squeezed, so that the contact magnifying part 33 is in contact with the pressure sensor 32, when the syringe 30 is released from the pressure sensor 32. When removed from the syringe groove, the contact amplifying part 33 is driven by the elastic force of the return spring 34 to break contact with the pressure sensor 32, so that the pressure exerted on the pressure sensor 32 rapidly drops to zero.

Further, the push handle torque adjustment device includes a push handle cover 35 , the push handle cover 35 is arranged on the outermost end of the push handle 31 , and the pressure sensor 32 is arranged on the inner side of the push handle cover 35 .

In the embodiment of the present invention, the push handle torque adjustment device of the syringe includes a controller, a motor and a pressure sensor, the pressure sensor is arranged in the push handle of the syringe, and the pressure sensor collects the pressure value of the motor pushing the push handle, when the pressure value When the preset pressure value is not reached, the controller controls the pushing device to increase the output power to the preset power value, so as to increase the torque of the push handle, increase the pushing force to the syringe, complete the injection operation, and realize fast and accurate operation. Responsive to the adjustment of the push handle torque, improving the efficiency and accuracy of the operation. Moreover, by arranging a contact amplifying part between the front-end contact of the pressure sensor and the piston handle of the syringe, the contact area between them is increased, and the pressure is better transmitted, and a return spring is arranged on the outer surface of the contact amplifying part 33 , so that when the syringe is removed from the syringe groove, under the action of the elastic force of the return spring, the contact amplifying part is disconnected from the pressure sensor, and the pressure applied to the pressure sensor is rapidly reduced to 0, avoiding subsequent unnecessary pressure-related processing flow.

Referring to FIG. 5 , an implementation flowchart of a method for adjusting the torque of a push handle of a syringe provided by an embodiment of the present invention. The method can be realized by adjusting the push handle torque of the syringe in the above embodiment, as shown in FIG. 5 , the method specifically includes:

Step S401, when the pushing device of the syringe pump pushes the push handle of the syringe, obtain the pushed pressure value collected by the pressure sensor in the push handle;

Specifically, when the control system of the syringe pump receives the injection signal, it controls the pushing device to push the push handle of the syringe, and a pressure sensor is built in the push handle to detect the pressure on the push handle.

The pressure sensor of the syringe collects the pressure data that the push handle of the syringe is pushed by the pushing device, and the pressure value of the push handle can be obtained through the pressure data. The syringe pump is provided with a data acquisition module, which obtains the pressure collected by the pressure sensor data, and send the pressure data to the controller of the syringe pump, and the controller processes the pressure data to obtain the pressure value of the push handle received by the push handle.

Step S402, judging whether the pressure value reaches a preset pressure value;

Specifically, various reference data are stored in the controller, including a preset pressure value, the preset pressure value corresponds to a threshold value for triggering the push handle, and it is determined that the pressure value collected by the pressure sensor reaches the preset pressure value.

Step S403, if not reached, control the pushing device to increase the output power to a preset power value to increase the torque of the push handle.

If the pressure value does not reach the preset pressure value, indicating that the current pushing device cannot push the syringe to complete the injection operation, the controller increases the output power of the pushing device to the preset power value, which can be It is preset in the controller, or set in the memory, the memory is connected with the controller, and the controller can read the power value in the memory.

Specifically, the pushing device may include a motor, and the specific type may be a stepping motor. The motor is mainly used to output rotational power to drive the push handle drivingly connected thereto to move forward or backward, corresponding to the operation of pushing or pumping the syringe. For the specific structure and working process of the motor, please refer to the related description of the motor 21 in the embodiment shown in FIG. 1 above.

Further, the output power can be adjusted by adjusting the output current of the motor. Specifically, the output current of the motor is increased to a first preset current value, so that the output power of the motor reaches the preset power value. The corresponding relationship between the current output current based on the adjustment and the target current value to be adjusted is stored in the controller and the memory in advance, and the controller can obtain the target current value by querying. In this embodiment, the first preset The current value is the target current value to be adjusted corresponding to the current output current.

In the embodiment of the present invention, when the push device of the syringe pump pushes the push handle of the syringe, the pressure value of the push is collected by the pressure sensor in the push handle, and when the pressure value does not reach the preset pressure value, the push device is controlled to increase The high output power reaches the preset power value to increase the torque of the push handle, increase the pushing force of the syringe, and complete the injection operation. By comparing the pressure value detected by the pressure sensor with the preset pressure value that can complete normal injection , intelligently regulate the torque of the push handle of the syringe, complete the injection operation, and improve the efficiency and accuracy of the operation.

Referring to FIG. 6 , an implementation flowchart of a method for adjusting the torque of a push handle of a syringe provided by an embodiment of the present invention. The method can be realized by adjusting the push handle torque of the syringe shown in the above embodiment, as shown in FIG. 6 , the method specifically includes:

Step S501, when the motor of the syringe pump pushes the push handle of the syringe, obtain the pushed pressure value collected by the pressure sensor of the syringe;

Step S502, judging whether the pressure value reaches a preset pressure value;

Step S503, if not reached, control the motor to increase the output power to a preset power value to increase the torque of the push handle;

Step S504, if it is reached, determine whether the pressure value exceeds the preset pressure extreme value;

The preset pressure extreme value is greater than or equal to the pressure value formed on the push handle when the motor outputs the maximum working power, or the preset pressure extreme value is greater than or equal to the maximum pressure value that the syringe can bear.

Exceeding the preset pressure limit will cause damage to the motor or the syringe, so the preset pressure limit ensures the safety of the syringe pump.

Step S505, if it exceeds, the alarm module that controls the syringe pump will give an alarm.

If the pressure value exceeds the preset pressure extreme value, the controller sends a control signal to the alarm module connected to it to control the alarm module to give an alarm, specifically, both sound and flash can be simultaneously alarmed.

Further, when reducing the injection flow rate of the syringe pump, the controller of the radio frequency instrument can send a control signal to the controller of the syringe pump to reduce the torque of the push handle of the syringe, and when receiving the signal to reduce the torque, the controller controls the The output current of the motor is reduced to a second preset current value to reduce the torque of the push handle, and the second preset current value is smaller than the first preset current value.

In the embodiment of the present invention, when the motor of the syringe pump pushes the push handle of the syringe, the pressure value of the push is collected by the pressure sensor in the push handle, and when the pressure value does not reach the preset pressure value, the motor is controlled to increase the output The power reaches the preset power value to increase the torque of the push handle, increase the pushing force of the syringe, and complete the injection operation. By comparing the pressure value detected by the pressure sensor with the preset pressure value that can complete normal injection, intelligent The torque of the push handle of the syringe is regulated to complete the injection operation, which improves the efficiency and accuracy of the operation. And monitor whether the pressure value exceeds the preset pressure limit value, if it exceeds, an alarm will be issued, and the torque of the syringe push handle can be reduced by controlling the output current of the motor, and the torque of the syringe push handle can be further controlled intelligently.

Referring to FIG. 7 , a schematic structural diagram of a push handle torque adjustment device of a syringe provided by an embodiment of the present invention. For the convenience of description, only the parts related to the embodiments of the present invention are shown. The device can be set in a syringe pump, and specifically can be a controller of the syringe pump, or a part of a module in the controller. The device includes:

The obtaining module 601 is used to obtain the pushed pressure value collected by the pressure sensor in the push handle when the push device of the syringe pump pushes the push handle of the syringe;

A judgment module 602, configured to judge whether the pressure value reaches a preset pressure value;

The control module 603 is configured to control the pushing device to increase the output power to a preset power value if not reached, so as to increase the torque of the push handle.

Further, the control module 603 is further configured to increase the output current of the motor to the first preset current value, so that the output power of the motor reaches the preset power value.

Further, the judgment module 602 is also used for judging whether the pressure value exceeds the preset pressure limit value, and the control module 603 is also used for controlling the alarm module of the syringe pump to give an alarm if it exceeds.

Further, the control module 603 is further configured to reduce the output current of the motor to a second preset current value to reduce the torque of the push handle when the signal for reducing the torque is received, and the second preset current value is smaller than the first preset value. current value.

In the embodiment of the present invention, when the motor of the syringe pump pushes the push handle of the syringe, the pressure value of the push is collected by the pressure sensor in the push handle, and when the pressure value does not reach the preset pressure value, the motor is controlled to increase the output The power reaches the preset power value to increase the torque of the push handle, increase the pushing force of the syringe, and complete the injection operation. By comparing the pressure value detected by the pressure sensor with the preset pressure value that can complete normal injection, intelligent The torque of the push handle of the syringe is regulated to complete the injection operation and improve the efficiency and accuracy of the operation. And monitor whether the pressure value exceeds the preset pressure limit value, if it exceeds, an alarm will be issued, and the torque of the syringe push handle can be reduced by controlling the output current of the motor, and the torque of the syringe push handle can be further controlled intelligently.

An embodiment of the present invention provides a syringe pump. The syringe pump can be the syringe pump shown in each of the preceding embodiments, including the push handle torque adjustment device of the syringe in the embodiment shown in FIG. 1 to FIG. 4 , which specifically includes : the controller, the pushing device and the pressure sensor. For the specific connection structure and working process, refer to the description of the foregoing embodiments.

Further, a memory is provided in the syringe pump, and the memory stores executable program codes, and the processor coupled with the memory calls the executable program codes stored in the memory, and executes as shown in Figure 5 and Figure 6 above. The push handle torque adjustment method of the syringe described in the Examples.

Wherein, the executable program code includes each module in the device for adjusting the torque of the push handle of the syringe described in the embodiment shown in FIG.

Further, an embodiment of the present invention also provides a computer-readable storage medium. The computer-readable storage medium may be provided in the syringe pump in the above-mentioned embodiments, and the computer-readable storage medium may be one of the above-mentioned embodiments. of memory. The computer-readable storage medium stores a computer program, and when the program is executed by the processor, implements the method for adjusting the torque of the push handle of the syringe described in the embodiments shown in FIG. 5 and FIG. 6 . Further, the computer-storable medium may also be a U disk, a removable hard disk, a read-only memory (ROM, Read-Only Memory), a RAM, a magnetic disk, or an optical disk, and other mediums that can store program codes.

It should be noted that, for the convenience of description, the foregoing method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. As in accordance with the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily all necessary to the present invention.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

The above is a description of the push handle torque adjustment device, method and syringe pump of the syringe provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims

A push handle torque adjustment device of a syringe, applied to a syringe pump, is characterized in that, comprising:

a controller, a pusher, and a pressure sensor disposed in the push handle of the syringe;

the controller is connected to the push device and the pressure sensor, and the push device is also connected to the push handle;

Wherein, the pushing device is used to push the push handle of the syringe to inject;

the pressure sensor is used for detecting the pressure exerted by the pushing device on the push handle of the syringe;

The controller is used for judging whether the pressure value reaches a preset pressure value, and if not, controlling the pushing device to increase the output power to a preset power value to increase the torque of the push handle.
The push handle torque adjustment device according to claim 1, wherein the push handle torque adjustment device further comprises: a contact amplifying part;

The contact amplifying part is arranged between the pressure sensor and the piston handle of the syringe, and is used to increase the contact area of the force between the pressure sensor and the piston handle.
The push handle torque adjustment device according to claim 1 or 2, wherein the push handle torque adjustment device further comprises: a return spring;

The return spring is arranged on the outer surface of the contact amplifying part. When the syringe is installed in the syringe groove, the contact amplifying part and the return spring are squeezed, so that the contact amplifying part and the pressure sensor are pressed together. When the syringe is removed from the syringe groove, the contact amplifying part is driven by the elastic force of the return spring to break contact with the pressure sensor.
The push handle torque adjustment device according to claim 3, wherein a push handle cover is provided at the outer end of the push handle;

The pressure sensor is arranged on the inner side of the push handle cover.
A method for adjusting the torque of a push handle of a syringe, applied to a syringe pump, is characterized in that, comprising:

When the pushing device of the syringe pump pushes the push handle of the syringe, obtain the pushed pressure value collected by the pressure sensor in the push handle;

judging whether the pressure value reaches a preset pressure value;

If not, the pushing device is controlled to increase the output power to a preset power value, so as to increase the torque of the push handle.
The method according to claim 5, wherein the pushing device comprises a motor, and the controlling the pushing device to increase the output power to a preset power value comprises:

The output current of the motor is increased to a first preset current value, so that the output power of the motor reaches the preset power value.
The method according to claim 5 or 6, wherein the method further comprises:

judging whether the pressure value exceeds a preset pressure extreme value;

If it exceeds, the alarm module that controls the syringe pump will give an alarm.
The method according to claim 7, wherein the method further comprises:

When receiving a torque reduction signal, the output current of the motor is controlled to be reduced to a second preset current value to reduce the torque of the push handle, and the second preset current value is smaller than the first preset current value.
A push handle torque adjustment device of a syringe, applied to a syringe pump, is characterized in that, comprising:

an acquisition module, configured to acquire the pushed pressure value collected by the pressure sensor in the push handle when the push device of the syringe pump pushes the push handle of the syringe;

a judgment module for judging whether the pressure value reaches a preset pressure value;

The control module is configured to control the push device to increase the output power to a preset power value if not reached, so as to increase the torque of the push handle.
A syringe pump, characterized in that it comprises the push handle torque adjustment device according to any one of claims 1 to 4.