CN111035440B - Pedal device and contain this pedal device's bolus pump - Google Patents
Pedal device and contain this pedal device's bolus pump Download PDFInfo
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- CN111035440B CN111035440B CN201911404517.6A CN201911404517A CN111035440B CN 111035440 B CN111035440 B CN 111035440B CN 201911404517 A CN201911404517 A CN 201911404517A CN 111035440 B CN111035440 B CN 111035440B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00137—Details of operation mode
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
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Abstract
The invention provides a pedal device and a push injection pump comprising the pedal device. The pedal device comprises a horizontal plate, an inclined plate, at least one elastic pedal part and at least one elastic foot top part, wherein the inclined plate is connected with one end of the horizontal plate and is obliquely arranged at an included angle theta with the horizontal plate; the distance between the joint of the horizontal plate and the inclined plate and the top of the foot is not less than the distance between the joint and the pedal part; 0 ° < θ <90 °; the signal output ends of the pedal part and the foot top part can be respectively connected with the signal input end of an external device. This pedal device makes foot portion need not change the position only need tiptoe downward operation pedal portion and tiptoe upwarp operation foot top portion just can trigger two kinds of control modes, and occupation space is little, and pedal portion and the foot top in use of setting are very easily distinguished, and difficult mistake is stepped on.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a pedal device and a bolus pump comprising the pedal device.
Background
The ultrasonic guided descending nerve block is a trend of the development of the anesthesiology technology, and the modern medical requirements of accuracy, controllability and individuation can be realized by using the ultrasonic. The main reason is that an operator controls an ultrasonic probe by the left hand and controls a nerve blocking needle by the right hand, and the back-drawing and pushing operation can not be performed when the needle point of the operator reaches an ideal position, so that a specially-assigned person is required to assist the back-drawing and pushing operation of the injector, and the use is very inconvenient.
Chinese patent publication No. CN207520430U discloses an brachial plexus anesthesia auxiliary structure, which comprises an injection structure and an auxiliary structure for assisting the injection structure to perform injection, wherein the auxiliary structure comprises a foot switch, a driving motor connected with the foot switch and a lead screw driven by the driving motor, the foot switch comprises an injection pedal and a retraction pedal, and a fixing part for fixing the injection structure is arranged at the front end of the lead screw. This patent is through setting up the auxiliary structure of available foot operation, comes liberation medical personnel's both hands, and the medical personnel of being convenient for carry out the anesthesia operation, can realize one-man operation, and convenient to use, easy operation are effectual to the control of injection structure. However, the foot switch in the patent comprises two independent injection pedals and withdrawal pedals, so that on one hand, the occupied space is large, and on the other hand, the problem that the injection pedals and the withdrawal pedals are mistakenly stepped on due to the fact that most of attention of medical staff is concentrated on the to-be-punctured part of a patient during operation is solved.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a pedaling apparatus and a bolus pump comprising the same.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a footrest apparatus comprising a horizontal plate, a tilt plate connected to one end of the horizontal plate and disposed to tilt at an angle θ with respect to the horizontal plate, at least one elastic footrest section disposed on the horizontal plate in an area of the angle θ, and at least one elastic footrest section disposed on the tilt plate; the distance between the joint of the horizontal plate and the inclined plate and the top of the foot is not less than the distance between the joint and the pedal part; 0 ° < θ <90 °; the signal output ends of the pedal part and the foot top part can be respectively connected with the signal input end of an external device.
The beneficial technical effects of the technical scheme are as follows: this pedal device makes the foot need not trade the position and only need the tiptoe to operate pedal portion and tiptoe upwarp operation foot top portion downwards and just can trigger two kinds of control mode, it is big to have changed the occupation space that the structure that traditional pedal device 2 or more than 2 pedal portions set up side by side brought, need to change the pedal portion that foot position operation does not, the scheduling problem is stepped on to the easy mistake, this pedal device occupation space is little, the pedal portion and the footstep top in use of setting are very easily distinguished, pedal portion and the footstep top just can be operated to the position of need not changing foot, the difficult mistake is stepped on, and light characteristics.
In a preferred embodiment of the present invention, the mobile terminal further comprises a signal transmitter, wherein the signal output terminal of the foot rest part is connected with a first signal input terminal of the signal transmitter, the signal output terminal of the foot top part is connected with a second signal input terminal of the signal transmitter, and the signal output terminal of the signal transmitter can be connected with the signal input terminal of the external device in a wired or wireless mode.
The beneficial technical effects of the technical scheme are as follows: the output signal of the pedal part and the output signal of the top of the foot are standardized by arranging the signal transmitter, so that the connection and the communication with an external device are facilitated.
In a preferred embodiment of the present invention, the foothold and/or the foot top is/are an elastic switch; or the pedal part and/or the foot top part adopt the following structures: comprises a surface layer, an elastic element and a first pressure sensor for detecting the pressure applied to the surface layer by a user; the elastic element is used for connecting the surface layer with the horizontal plate, or the elastic element is used for connecting the surface layer with the inclined plate; the output end of the first pressure sensor can be connected with the signal input end of an external device.
The beneficial technical effects of the technical scheme are as follows: the elastic switch is an existing switch and is convenient to purchase and implement. Arranging a pressure sensor on the pedal part and/or the foot top part, and taking the pressure output by the pressure sensor as a control quantity output by the pedal part and/or the foot top part so as to qualitatively control the external device by the size change of the pressure; when the pedal part adopts the structure, the elastic element is used for connecting the surface layer and the horizontal plate, and when the top of the foot adopts the structure, the elastic element is used for connecting the surface layer and the inclined plate.
In a preferred embodiment of the present invention, the foothold and/or the footstock section adopt the following structure:
the device comprises a surface layer, a first elastic element, a second elastic element, a partition layer and a first pressure sensor for detecting the pressure applied to the surface layer by a user; the interlayer is arranged in a space separation mode with the first elastic element; the first end of the first elastic element is connected with the surface layer, the second end of the first elastic element is connected with the horizontal plate, or the second end of the first elastic element is connected with the inclined plate; the length of the first elastic element is greater than that of the second elastic element, and two ends of the second elastic element are respectively connected with the interlayer and the horizontal plate, or two ends of the second elastic element are respectively connected with the interlayer and the inclined plate; the output end of the first pressure sensor can be connected with the signal input end of an external device.
The beneficial technical effects of the technical scheme are as follows: setting a pressure sensor on the foot-treading part and/or the foot top part, and using the pressure output by the pressure sensor as a control quantity output by the foot-treading part and/or the foot top part so as to qualitatively control the external device by the change of the pressure; the process of this structure foot pressure top layer can be divided into two stages, and the first stage is: when the surface layer is gradually closed to the interlayer under the action of the feet but is not closed to the interlayer, the reaction force felt by the feet is provided by the rebound force of the first elastic element; the second stage is as follows: when the surface layer is in contact with the septum, the counterforce felt by the foot part is provided by the counterforce of the first elastic element and the second elastic element, and the counterforce of the second stage is obviously much larger than that of the first stage, so that a user can conveniently test whether the position of the puncture needle is proper or not in the first stage, and if the puncture position of the first stage is proper, the user enters the second stage, so that puncture errors are reduced, and the puncture accuracy is improved. When the pedal part adopts the structure, the second end of the first elastic element is connected with the horizontal plate, and the two ends of the second elastic element are respectively connected with the interlayer and the horizontal plate; when the top of the foot adopts the structure, the second end of the first elastic element is connected with the inclined plate, and the two ends of the second elastic element are respectively connected with the interlayer and the inclined plate.
In a preferred embodiment of the present invention, the inclined plate is a convex arc-shaped plate; and/or the cross-sectional shapes of the foot rest part and the foot top part are triangular.
The beneficial technical effects of the technical scheme are as follows: the inclined plate is a convex arc-shaped plate, so that the mounting space of the top of the foot is increased, and the foot is more attractive; the pedal part and the top of the foot are matched with the theta angle area in a triangular shape, so that the installation and implementation are convenient.
In a preferred embodiment of the present invention, the top of the foot is a cantilever structure extending downward, the cantilever structure comprising a flexible column and a torque sensor for detecting the torque of the flexible column; the upper end of the flexible column is connected with the inclined plate, and the lower end of the flexible column is suspended; the output end of the torque sensor can be connected with the signal input end of an external device.
The beneficial technical effects of the technical scheme are as follows: this structure is convenient for tiptoe operation foot top, reduces the operation degree of difficulty.
In order to achieve the above object, according to a second aspect of the present invention, the present invention provides a push injection pump, comprising a housing, a chute arranged on the housing for mounting a syringe, a fixing mechanism arranged at the chute for fixing the syringe, a slider arranged at an end of the chute for pushing a piston rod of the syringe to move linearly, a linear driving device for driving the slider to move linearly, a puncture needle connected with a syringe cylinder through an extension tube, and a pedal device according to the present invention; the sliding block is in transmission connection with the linear driving device and is detachably connected with the end part of the piston rod; the signal output end of the pedal part and the signal output end of the foot top part are respectively connected with the signal input end of the linear driving device.
The beneficial technical effects of the technical scheme are as follows: the injection pump has the advantages that the pedal device is arranged, injection and back-pumping of the injector can be controlled only through the pedal device, single-person injection, especially single-person nerve blocking work can be achieved, operation is simple and convenient, occupied space is small, and misoperation cannot occur easily.
In a preferred embodiment of the present invention, the linear driving device further comprises a signal receiver, a signal input end of the signal receiver is connected with a signal output end of the signal transmitter in a wired or wireless manner, and a signal output end of the signal receiver is connected with a signal input end of the linear driving device.
The beneficial technical effects of the technical scheme are as follows: with signal transmitter signal matching, be convenient for receive pedal device's control signal, wherein, during signal receiver and signal transmitter wireless communication, can reduce the cable, clean and tidy workspace, pedal device place the position more freely.
In a preferred embodiment of the present invention, the foot pedal is used for controlling the linear driving device driving slide block to push the piston rod of the syringe to perform injection, and the foot pedal is used for controlling the linear driving device driving slide block to pull the piston rod of the syringe to perform retraction.
The beneficial technical effects of the technical scheme are as follows: the injection is controlled by the pedal part, and the pumping back is controlled by the top of the foot, so that the action habit of the human body is met, and the user experience is improved.
In a preferred embodiment of the present invention, the display device is disposed on a surface of the housing, and a first signal input end of the display device is connected to a signal output end of the signal receiver;
and/or the device further comprises a second pressure sensor which is arranged on the inner surface of the sliding block and used for sensing the pushing force of the sliding block on the piston rod of the syringe, and the signal output end of the second pressure sensor is connected with the third signal input end of the display device.
The beneficial technical effects of the technical scheme are as follows: the display device is convenient for a user to observe the current operation state of the injection pump; the pressure on the piston can be sensed through the second pressure sensor, so that the injection force of the injector can be known conveniently.
In a preferred embodiment of the present invention, the fixing mechanism includes a syringe clip and a fixing groove; the syringe clamp comprises a telescopic pull rod, a grating reading head and a stop block, wherein part of the telescopic pull rod extends into the shell; the needle cylinder of the injector is positioned between the stop block and the chute, and the output end of the grating reading head is connected with the second signal input end of the display device; the syringe passes through the fixing groove.
The beneficial technical effects of the technical scheme are as follows: the injector clamp can clamp injectors of any type, and the larger the diameter of the injector syringe is, the larger the pressure output by the tension sensor is, so that the size of the syringe of the injector can be obtained through the size of the tension sensor, and the type of the injector can be further judged; the injector and the chute are further fixed through the fixing groove.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic sectional view of a footrest apparatus in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic top view of the footrest apparatus in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view showing a pedal device according to a preferred embodiment of the present invention;
FIG. 4 is a schematic sectional view of a footrest in accordance with another preferred embodiment of the present invention;
FIG. 5 is a schematic sectional view of a footrest in accordance with still another preferred embodiment of the present invention;
FIG. 6 is a schematic diagram of a push infusion pump in accordance with a preferred embodiment of the present invention;
FIG. 7 is a system block diagram of a bolus pump in a preferred embodiment of the invention;
FIG. 8 is a schematic sectional view of a footrest in accordance with still another preferred embodiment of the present invention.
Reference numerals:
1, a horizontal plate; 2 an inclined plate; 3 a pedal part; 4, the top of the leg; 5, surface layer; 6 an elastic element; 61 a first elastic element; 62 a second resilient element; 7 a first pressure sensor; 8 a flexible column; 9 a torque sensor; 10 chute; 11 a slide block; 12 a housing; 13 a display device; 14 a syringe clip; 141 a pull rod; a 142 stop block; 15 fixing the groove; 16 spacer layers.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection through an intermediate medium, and those skilled in the art will understand the specific meaning of the terms as they are used in the specific case.
The invention discloses a pedal device, as shown in fig. 1 to 5, in a preferred embodiment, the pedal device comprises a horizontal plate 1, an inclined plate 2 which is connected with one end of the horizontal plate 1 and is obliquely arranged with an included angle theta with the horizontal plate 1, at least one elastic pedal part 3 which is arranged on the horizontal plate 1 in the area of the included angle theta, and at least one elastic foot top part 4 which is arranged on the inclined plate 2;
the distance between the joint of the horizontal plate 1 and the inclined plate 2 and the top part 4 of the foot is not less than the distance between the joint and the pedal part 3; 0 ° < θ <90 °; the signal output ends of the foot rest part 3 and the foot top part 4 can be respectively connected with the signal input end of an external device.
In the present embodiment, the horizontal plate 1 and the inclined plate 2 are preferably, but not limited to, provided by bolting, welding, or integral molding of both. The horizontal plate 1 can be a flat plate structure with a horizontal or concave upper surface, and the concave upper surface ensures that the foot does not easily slip when the foot operates the pedal part 3 and the foot top part 4; the inclined plate 2 is preferably, but not limited to, a hemispherical shape (as shown in fig. 2) or a convex arc or flat plate structure, etc. Preferably, a protrusion is provided on the horizontal plate 1 near the outer side, the height of the protrusion is greater than that of the foot rest 3, the distance between the protrusion and the foot rest 3 is less than the general length of the adult foot, and the protrusion can be used as a foot supporting point for the foot to operate the foot rest 3 and the foot top 4.
In the present embodiment, the distance between the connection point of the horizontal plate 1 and the inclined plate 2 and the foot top portion 4 is not less than the distance between the connection point and the foot rest portion 3, so that the foot rest portion 3 can be effectively prevented from being triggered when the foot rest portion 4 is operated by the foot.
In this embodiment, the external device is preferably, but not limited to, any device or signal receiver of the device that requires the operation control using the foothold of the present invention. The signal output ends of the pedal part 3 and the foot top part 4 can be respectively connected with the signal input end of an external device in a wired or wireless way.
In the present embodiment, it is preferable that the weight of the horizontal plate 1 is greater than that of the inclined plate 2 to avoid the tilting of the horizontal plate 1 due to the light weight when the foot top 4 is operated by the foot; specifically, in order to satisfy the requirement that the weight of the horizontal plate 1 is greater than that of the inclined plate 2, the horizontal plate 1 can be made of metal, and the inclined plate 2 is made of plastic; or a balancing weight is arranged on the horizontal plate 1.
In a preferred embodiment, the foot rest portion 3 further comprises a signal transmitter, a signal output end of the foot rest portion 3 is connected with a first signal input end of the signal transmitter, a signal output end of the foot top portion 4 is connected with a second signal input end of the signal transmitter, and a signal output end of the signal transmitter can be connected with a signal input end of an external device in a wired or wireless mode.
In this embodiment, the signal transmitter is preferably, but not limited to, an existing wired communication module and an existing wireless communication module, the wired communication module may be an existing serial communication module such as RS232, an existing optical fiber communication module, and the existing wireless communication module may be an existing bluetooth communication module, an existing WIFI communication module, and the like.
In a preferred embodiment, as shown in fig. 4, the foothold 3 and/or the footstock 4 is/are spring switches.
In the present embodiment, the elastic switch is preferably, but not limited to, a conventional push switch, a push button switch, etc., such as PBK-818C, PBK-871 of Ruhling electronics, inc. Preferably, in order to facilitate the foot operation, the elastic switch can increase the pressing surface area of the pressing switch and the button switch on the basis of the existing structures of the pressing switch and the button switch. Preferably, the elastic switch is connected in series with a biasing resistor, a first end of the elastic switch is connected with the power supply end, a second end of the elastic switch is respectively connected with a first end of the biasing resistor and a signal input end of the external device, a second end of the biasing resistor is connected with the ground, when the foot presses the elastic switch, the first end and the second end of the elastic switch are connected, the signal input end of the external device obtains a high level, when the foot does not press the elastic switch, the first end and the second end of the elastic switch are disconnected, and the signal input end of the external device obtains a low level.
In a preferred embodiment, as shown in fig. 1 and 3, the footrest section 3 and/or the foot top section 4 adopt the following configurations: comprising a skin 5, an elastic element 6, and a first pressure sensor 7 for detecting a pressure applied by a user to the skin 5; the elastic element 6 is used for connecting the skin 5 with the horizontal plate 1 or for connecting the skin 5 with the inclined plate 2; the output of the first pressure sensor 7 may be connected to a signal input of an external device.
In the present embodiment, the surface layer 5 is preferably made of rubber. The elastic element 6 is preferably but not a spring or a spring plus guide post structure or an elastic sleeve or the like. Preferably, the first pressure sensor 7 is preferably, but not limited to, disposed on the outer surface of the skin 5, or between the elastic element 6 and the inner surface of the skin 5, or between the elastic element 6 and the horizontal plate 1, or between the elastic element 6 and the inclined plate 2, or the like. The first pressure sensor 7 may be selected from existing products such as the model FST800-1600 from the company felast, han, or the model T101 from the company relett.
In the present embodiment, the above-described structure is adopted for the footrest section 3 or the footstep section 4, or both the footrest section 3 and the footstep section 4.
In the present embodiment, when the first pressure sensor 7 is connected to the signal input terminal of the signal transmitter, the first pressure sensor 7 may be a digital pressure sensor that outputs a pressure digital signal to the signal transmitter.
In a preferred embodiment, as shown in fig. 8, the foothold 3 and/or the foot top 4 adopt the following configurations (the following configurations are adopted for either the foothold 3 or the foot top 4, or both the foothold 3 and the foot top 4):
comprising a skin 5, a first elastic element 61, a second elastic element 62, a barrier 16, and a first pressure sensor 7 for detecting a pressure applied by a user to the skin; the barrier 16 is spaced apart from the first resilient element 61; a first end of the first elastic element 61 is connected with the surface layer 5, a second end of the first elastic element 61 is connected with the horizontal plate 1, or a second end of the first elastic element 61 is connected with the inclined plate 2; the length of the first elastic element 61 is greater than that of the second elastic element 62, two ends of the second elastic element 62 are respectively connected with the interlayer 16 and the horizontal plate 1, or two ends of the second elastic element 62 are respectively connected with the interlayer 16 and the inclined plate 2; the output of the first pressure sensor 7 may be connected to a signal input of an external device.
In this embodiment, as shown in fig. 8, preferably, the spacer 16 has a through hole, and the first end of the first elastic element 61 passes through the through hole and is connected to the surface layer 5. Preferably, the barrier 16 is a separate, relatively small surface area, planar piece that is not in spatial contact with the first resilient element 61.
In the present embodiment, the first elastic element 61 and the second elastic element 62 are preferably, but not limited to, compression springs, the surface layer 5 is preferably, but not limited to, a rubber layer having elasticity, and the spacer 16 may be made of plastic or metal. Preferably, the first pressure sensor 7 can be connected in series between the first elastic element 61 or between the first elastic element 61 and the lower surface of the skin 5.
In a preferred embodiment, as shown in fig. 1 to 5, the inclined plate 2 is a convex arc-shaped plate.
In a preferred embodiment, the cross-sectional shape of the tread portion 3 and the foot top portion 4 is triangular, as shown in fig. 1 and 3.
In a preferred embodiment, as shown in fig. 5, the foot top 4 is a downwardly extending cantilever structure comprising a flexible column 8 and a torque sensor 9 for detecting the torque of the flexible column 8; the upper end of the flexible column 8 is connected with the inclined plate 2, and the lower end of the flexible column 8 is suspended; the output of the torque sensor 9 may be connected to a signal input of an external device.
In the present embodiment, the flexible column 8 is preferably, but not limited to, made of rubber, and the torque sensor 9 may be attached to or sleeved on the outer surface of the flexible column 8 or embedded inside the flexible column 8. The torque sensor 9 is preferably, but not limited to, an existing resistive strain gage type sensor, or alternatively, a torque sensor available from martian technologies ltd model HDT 01A. The torque signal output can be obtained only by poking the lower end of the flexible column 8 by the toe, and the operation is simple.
The invention also discloses a push injection pump, in a preferred embodiment, as shown in fig. 6 and 7, the push injection pump comprises a shell 12, a chute 10 arranged on the shell 12 and used for installing a syringe, a fixing mechanism arranged at the chute 10 and used for fixing the syringe, a slide block 11 arranged at the end of the chute 10 and used for pushing a piston rod of the syringe to move linearly, a linear driving device used for driving the slide block 11 to move linearly, a puncture needle connected with a syringe through a pipeline, and the pedal device;
the sliding block 11 is in transmission connection with the linear driving device, and the sliding block 11 is detachably connected with the end part of the piston rod; the signal output end of the pedal part 3 and the signal output end of the foot top part 4 are respectively connected with the signal input end of the linear driving device.
In the present embodiment, the linear driving device is preferably provided inside the housing 12. The linear driving device is preferably, but not limited to, an existing motor driving mechanism or a pneumatic driving mechanism, etc. Preferably, the linear driving device comprises a motor unit and a lead screw, a threaded hole is formed in the sliding block 11, the sliding block 11 is in threaded connection with the lead screw through the threaded hole, the sliding block 11 can move linearly on the lead screw when the lead screw rotates, and a motor shaft of the motor unit is in transmission connection with the lead screw; the signal output ends of the pedal part 3 and the foot top part 4 are connected with the forward rotation starting end and the reverse rotation starting end of the motor unit one by one.
In the present embodiment, the slider 11 is provided with a clamping mechanism for clamping the end of the syringe piston rod, and the clamping mechanism may be a conventional clamp or the like.
In a preferred embodiment, as shown in fig. 7, the linear driving device further comprises a signal receiver, a signal input end of the signal receiver is connected with a signal output end of the signal transmitter in a wired or wireless mode, and a signal output end of the signal receiver is connected with a signal input end of the linear driving device.
In this embodiment, the signal receiver is in matched communication with the signal transmitter, and the device selection thereof can refer to the signal transmitter, which is not described herein again. When the pedal part 3 and/or the foot top part 4 has/have a first pressure sensor 7 for pressure, the signal receiver outputs the received pressure signal to the driving signal input end of the linear driving device, such as the forward rotation driving signal input end and the reverse rotation driving signal input end of the motor driving unit, and the larger the pressure signal is, the larger the pushing force or pulling force of the slide block 11 driven by the linear driving device on the syringe piston rod is.
In a preferred embodiment, the pedal portion 3 is used for controlling the linear driving device driving slide block 11 to push the piston rod of the syringe for injection, and the foot top portion 4 is used for controlling the linear driving device driving slide block 11 to pull the piston rod of the syringe for retraction.
In the present embodiment, the signal output terminal of the foot rest portion 3 is connected to the forward rotation start terminal of the motor unit, and the signal output terminal of the footstock portion 4 is connected to the reverse rotation start terminal of the motor unit.
In a preferred embodiment, the injection device further comprises a controller and a speed sensor for detecting the linear movement speed of the slider 11, wherein the speed sensor is preferably, but not limited to, an existing grating displacement sensor, the controller monitors the speed of the slider 11 output by the speed sensor in real time, obtains a difference value between the speed and a preset sliding speed, and adjusts the magnitude of a driving signal of the linear driving device so that the slider 11 is driven to move linearly at the preset sliding speed, thereby controlling the injection speed of the liquid in the injector to reach the preset injection speed.
In this embodiment, the controller preferably achieves precise control of the liquid injection rate through existing PID control algorithms. The preset sliding speed and the preset injection speed can be multiple and respectively correspond to one another.
In a preferred embodiment, as shown in fig. 6, the device further comprises a display device 13 disposed on the surface of the housing 12, wherein a first signal input terminal of the display device 13 is connected to a signal output terminal of the signal receiver;
and/or the device further comprises a second pressure sensor arranged on the inner surface of the sliding block 11 and used for sensing the pushing force of the sliding block 11 on the piston rod of the syringe, and the signal output end of the second pressure sensor is connected with the third signal input end of the display device 13.
In this embodiment, the display device 13 preferably includes a processor and a display screen, and the processor converts the output signal of the signal receiver into corresponding text information by using a conventional method and displays the text information on the display screen.
In this embodiment, the second pressure sensor may be selected from existing products, such as model FST800-1600 available from Pherster, hunan, or T101 available from Reiter.
In an application scenario of the present embodiment, the foot rest 3 and the foot top 4 are configured as shown in fig. 8, and the display device 13 displays the operation strength of the foot on the foot rest 3 and the foot top 4 detected by the first pressure sensor 7, and simultaneously displays the pushing force of the slider 11 on the tail end of the syringe piston rod detected by the second pressure sensor, so that the user can know the injection state. In this application scenario, the user prepares two syringes of the same type, the first syringe containing saline and the second syringe containing liquid medicine. First, a first syringe is loaded on the injection pump of the present application, a user operates the pedal portion 3 with a foot, in a first stress stage of the pedal portion 3, that is, only the first elastic element 61 provides a reaction force stage, the user observes a pressure value state output by the second pressure sensor on the display (preferably, at this time, the liquid injection speed of the syringe is controlled to be a first preset injection speed through the controller to perform uniform injection, so as to avoid the influence of the change of the injection speed on the size of the pressure value output by the second pressure sensor), and whether the needle point position is appropriate or not is judged according to the size of the pressure value output by the second pressure sensor (for example, in bone, the resistance is large, fascia is slightly small, muscle and fat resistance are general, and some gap resistance is very low). If the needle point position is not appropriate, the needle point position needs to be changed, and the process of injecting the liquid medicine is carried out. The first preset injection rate may be 100ml/min and the second preset injection rate may be 60ml/min.
In this application scenario, it is preferable that the controller receives the pressure value output by the first pressure sensor 7, and determines the first stage and the second stage of the force applied to the foot rest portion 3 and/or the foot top portion 4 according to the magnitude of the pressure value. In the controller, a pressure threshold is set, taking the foot pedal 3 as an example, if the pressure value output by the first pressure sensor 7 of the foot pedal 3 is smaller than the pressure threshold, the foot top 4 is considered to be in the first stage of stress, and if the pressure value output by the first pressure sensor 7 of the foot pedal 3 is larger than the pressure threshold, the foot top 4 is considered to be in the second stage of stress. The pressure threshold is preferably the value of the pressure output by the first pressure sensor 7 when the second resilient element 62 is compressed to a length of 90% to 50% of its uncompressed length.
In a preferred embodiment, as shown in fig. 6 and 7, the securing mechanism includes a syringe clip 14 and a securing groove 15;
the syringe clamp 14 comprises a telescopic pull rod 141 partially extending into the housing 12, a grating reading head for measuring the stretching distance of the pull rod 141, and a stop 142 arranged at the outer end of the pull rod 141; the syringe of the injector is positioned between the stop block 142 and the chute 10, and the output end of the grating reading head is connected with the second signal input end of the display device 13; the syringe passes through the fixing groove 15.
In the present embodiment, the fixing groove 15 may be a part of a circular ring structure. The grating readhead may be an existing grating distance sensor.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A pedal device is characterized by comprising a horizontal plate, an inclined plate, at least one elastic pedal part and at least one elastic foot top, wherein the inclined plate is connected with one end of the horizontal plate and is inclined with the horizontal plate at an included angle theta;
the distance between the joint of the horizontal plate and the inclined plate and the top of the foot is not less than that between the joint and the pedal
Distance of the sections; 0 ° < θ <90 °; the signal output ends of the pedal part and the foot top part can be respectively connected with the signal input end of an external device;
the pedal part and/or the foot top part adopt the following structures:
the device comprises a surface layer, a first elastic element, a second elastic element, a partition layer and a first pressure sensor for detecting the pressure applied to the surface layer by a user; the interlayer is arranged in a space separation mode with the first elastic element; the first end of the first elastic element is connected with the surface layer, the second end of the first elastic element is connected with the horizontal plate, or the second end of the first elastic element is connected with the inclined plate; the length of the first elastic element is greater than that of the second elastic element, and two ends of the second elastic element are respectively connected with the interlayer and the horizontal plate, or two ends of the second elastic element are respectively connected with the interlayer and the inclined plate; the output end of the first pressure sensor can be connected with the signal input end of an external device.
2. The stepping device as defined in claim 1, further comprising a signal transmitter, wherein the signal output of said stepping portion is connected to a first signal input of said signal transmitter, the signal output of said foot top portion is connected to a second signal input of said signal transmitter, and the signal output of said signal transmitter is connected to a signal input of an external device by wire or wirelessly.
3. The footrest apparatus according to claim 1, wherein said footrest part and/or foot top part is an elastic switch.
4. The footrest apparatus according to claim 1, wherein said inclined plate is a convex arc-shaped plate;
and/or the cross-sectional shapes of the foot rest part and the foot top part are triangular.
5. The footrest apparatus according to claim 1, wherein said foot top is a downwardly extending cantilever structure including a flexible column and a torque sensor for detecting a torque of said flexible column; the upper end of the flexible column is connected with the inclined plate 2, and the lower end of the flexible column is suspended; the output end of the torque sensor can be connected with the signal input end of an external device.
6. A push injection pump is characterized by comprising a shell, a sliding chute arranged on the shell and used for installing a syringe, a fixing mechanism arranged at the sliding chute and used for fixing the syringe, a sliding block arranged at the end part of the sliding chute and used for pushing a piston rod of the syringe to do linear motion, a linear driving device used for driving the sliding block to do linear motion, a puncture needle connected with a syringe cylinder through an extension tube, and a pedal device as claimed in any one of claims 1 to 5;
the foot pedal part is connected with the first signal input end of the signal transmitter, the foot top part is connected with the second signal input end of the signal transmitter, and the signal output end of the signal transmitter can be connected with the signal input end of an external device in a wired or wireless mode;
the sliding block is in transmission connection with the linear driving device and is detachably connected with the end part of the piston rod; the signal output end of the pedal part and the signal output end of the foot top part are respectively connected with the signal input end of the linear driving device.
7. The bolus pump of claim 6, further comprising a signal receiver, the signal input of the signal receiver being wired or wirelessly connected to the signal output of the signal transmitter, the signal output of the signal receiver being connected to the signal input of the linear drive device.
8. The bolus pump of claim 7, further comprising a display device disposed on a surface of the housing, the display device having a first signal input connected to the signal output of the signal receiver;
and/or the device further comprises a second pressure sensor which is arranged on the inner surface of the sliding block and used for sensing the pushing force of the sliding block on the piston rod of the syringe, and the signal output end of the second pressure sensor is connected with the third signal input end of the display device.
9. The bolus pump of claim 8, wherein the securing mechanism comprises a syringe clip and a securing groove;
the syringe clamp comprises a telescopic pull rod, a grating reading head and a stop block, wherein part of the telescopic pull rod extends into the shell; the needle cylinder of the injector is positioned between the stop block and the chute, and the output end of the grating reading head is connected with the second signal input end of the display device; the syringe passes through the fixing groove.
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| CN201911404517.6A CN111035440B (en) | 2019-12-31 | 2019-12-31 | Pedal device and contain this pedal device's bolus pump |
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| CN201911404517.6A CN111035440B (en) | 2019-12-31 | 2019-12-31 | Pedal device and contain this pedal device's bolus pump |
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| CN111035440A CN111035440A (en) | 2020-04-21 |
| CN111035440B true CN111035440B (en) | 2022-10-25 |
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| EP0583734A1 (en) * | 1992-08-20 | 1994-02-23 | GARDENA Kress + Kastner GmbH | Working tool for processing plants or else, especially trimmer |
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