CN112426618B

CN112426618B - Ultrasonic wound cleaning and disinfecting medical gun based on biological science technology

Info

Publication number: CN112426618B
Application number: CN202011383969.3A
Authority: CN
Inventors: 崔洪岩; 毛鑫; 余文姣
Original assignee: Second Hospital of Dalian Medical University
Current assignee: Second Hospital of Dalian Medical University
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-08-03
Anticipated expiration: 2040-12-01
Also published as: CN112426618A

Abstract

The invention discloses an ultrasonic wound cleaning and disinfecting medical gun based on a biological science technology, which comprises a shell and a soft plug, wherein the soft plug can be detachably connected in the shell; the medical wound cleaning device is internally provided with the tightening device, soft plugs with different specifications can be replaced through the tightening device, so that wounds of different parts or different people can be cleaned, the use range is expanded, the use comfort of a patient is improved, the sensing device is arranged to simply and clearly tell the circulation state of medical staff, the medical staff can conveniently operate, the working efficiency is improved, the ultrasonic vibration device drives liquid to vibrate and clean sundry waste residues and bacteria at the wound of the patient, the effects of cleaning the wound and sterilizing are achieved, mechanical vibration cleaning is more convenient, quicker and more effective than manual cleaning, the work of the medical staff is relieved, the working efficiency of the medical staff is improved, and meanwhile, the quick wound cleaning can also ensure the life safety of the patient.

Description

Ultrasonic wound cleaning and disinfecting medical gun based on biological science technology

Technical Field

The invention relates to the technical field of medical instruments, in particular to an ultrasonic wound cleaning and disinfecting medical gun based on a biological science technology.

Background

With the development of science and technology, ultrasonic technology is mature gradually, the application of ultrasonic waves is common, especially in the field of medical treatment, but most of ultrasonic technology is applied to large-scale operations or examination items, and no help is provided for medical staff on the basis.

Disclosure of Invention

The invention aims to provide an ultrasonic wound cleaning and disinfecting medical gun based on a biological science technology, which is used for overcoming the defects in the prior art.

The invention relates to an ultrasonic wound cleaning and disinfecting medical gun based on bioscience technology, which comprises a shell and a cork which can be detachably connected in the shell, wherein a flow control cavity is arranged in the shell, a first inlet tube and a second inlet tube which penetrate through the top wall of the shell and are communicated with the flow control cavity are arranged in the shell, the left wall of the flow control cavity is rotatably connected with a flow control rotating wheel through a first rotating shaft, a communicating tube which penetrates left and right is arranged on the flow control rotating wheel, an upper sensing device and a lower sensing device which are symmetrical in position and can confirm whether to completely communicate the first inlet tube with the second inlet tube are fixedly arranged on the inner wall of the communicating tube, a blocking device which is symmetrical in position with the communicating tube and can block the first inlet tube and the second inlet tube and confirm is fixedly arranged on the flow control rotating wheel, a rotating cavity is communicated in the right wall of the flow control cavity, the right wall of the rotating cavity is rotatably connected with a second rotating shaft extending into the flow control cavity, the second rotating shaft is positioned in the flow control cavity and is rotatably connected with a first driving wheel meshed with the flow control rotating wheel, the ratchet wheel in the rotating cavity is connected with a one-way wheel, the bottom wall of the rotating cavity is positioned at the rear part of the one-way wheel and is slidably connected with a button block penetrating through the bottom surface of the shell, the top end of the button block is fixedly connected with a rack meshed with the one-way wheel, the top part of the rack is fixedly connected with the top wall of the rotating cavity through a second spring, the rear wall of the rotating cavity is internally provided with a sliding groove with a forward opening, the sliding groove is slidably connected with a sliding block fixedly connected with the rear wall of the rack, the left side of the flow control cavity is communicated with a cleaning liquid outlet pipe and a disinfectant outlet pipe which correspond to the positions of the first flow inlet pipe and the second flow inlet pipe, the left end of the shell is provided with a connecting groove with a leftward opening, a water outlet pipe communicated with the cleaning liquid outlet pipe and the disinfectant outlet pipe is arranged in the connecting groove, a tightening device which is arranged outside the water outlet pipe and can fasten the soft plugs with different specifications to the outside of the water outlet pipe is arranged in the connecting groove, a vibration cavity communicated with the connecting groove is arranged behind the water outlet pipe, an ultrasonic vibration device capable of driving liquid in the soft plugs to vibrate is fixedly arranged in the vibration cavity, and a switch device capable of controlling the ultrasonic vibration device is fixedly arranged in the shell.

Optionally, the tightening device includes a motor installed in the rear wall of the connecting groove, a first threaded shaft rotatably connected to the front wall of the connecting groove is installed on the front side of the motor, a second threaded shaft opposite to the first threaded shaft in the vertical direction is rotatably connected to the connecting groove, a first nut and a second nut opposite to the first nut in thread are rotatably connected to the first threaded shaft, a second driving wheel is fixedly connected to the first threaded shaft, a third driving wheel opposite to the second driving wheel is fixedly connected to the second threaded shaft, the second driving wheel and the third driving wheel are driven by a belt, a third nut and a fourth nut opposite to the first nut and the second nut are rotatably connected to the second threaded shaft, the third nut and the fourth nut are opposite in thread, and the first nut and the third nut, And a fixing device capable of tightly attaching the soft plug to the water outlet pipe is fixedly connected between the second nut and the fourth nut.

Optionally, the fixing device includes fixed connection in the first slider of first nut, first slider bottom rotates through the third pivot and is connected with the second slider, the second slider bottom rotate through the fourth pivot be connected with the bottom with third nut fixed connection's third slider, second nut bottom fixedly connected with fourth slider, the fourth slider bottom rotates through the seventh pivot and is connected with the fifth slider, the fifth slider rotate through the eighth pivot be connected with the bottom with fourth nut fixed connection's sixth slider.

Optionally, induction system including set up in the communicating tube and the opening right response groove, the first sensor of response groove left side wall fixedly connected with, sliding connection has the ball shell of internally mounted rollable ball in the response groove, the ball shell with the response groove through overlap in the outer third spring fixed connection of first sensor, the response lamp that can show two is installed to the shell roof the first sensor state.

Optionally, the blocking device including set up in flow control runner on set firmly with communicating pipe position symmetry and opening right stifled groove, stifled groove left side wall fixedly connected with second sensor, it has the jam piece to block up inslot sliding connection, block up a left side wall through overlap in the outer first spring of second sensor with stifled groove left side wall fixed connection, the shell top is equipped with and can expresses the jam lamp of second sensor state, block up the piece right-hand member and can block up the second inlet tube.

Optionally, the switch device comprises a switch slot with a downward opening in the housing, a third sensor is fixedly connected to the right wall of the switch slot, a fifth rotating shaft is rotatably connected between the front wall and the rear wall in the switch slot, a trigger extending downwards is fixedly connected to the fifth rotating shaft, and a fixing block is fixedly connected to the lower portion of the fifth rotating shaft.

Optionally, the ultrasonic vibration device comprises an ultrasonic vibrator disposed on the left wall of the vibration cavity.

The invention has the beneficial effects that:

firstly, the method comprises the following steps: the medical nursing bed is simple to operate, easy to operate and clear in function expression, greatly improves the working efficiency of medical workers in basic work, reduces the work load of the medical workers and saves the work energy of the medical workers.

Secondly, the method comprises the following steps: can carry out the washing of wound to different positions or people of difference, enlarge application range, improve patient's use comfort, once fill in, clean health, quick washing wound and disinfection also can ensure patient's life safety.

Thirdly, the method comprises the following steps: the invention is based on biological science, changes the medication of patients according to the factors of the patients such as whether the patients are allergic to the drugs and the wound factors of the patients such as common bruise or animal bite, and has convenient use, wide application range and strong practicability.

Drawings

The technical solution 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; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of an ultrasonic wound cleaning and disinfecting medical gun based on bioscience technology;

FIG. 2 is a schematic view of the structure at A-A in FIG. 1;

FIG. 3 is a schematic view of the structure at B-B in FIG. 1;

FIG. 4 is a schematic view of the structure at C-C in FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 1 at D-D;

FIG. 6 is a schematic diagram of the structure in the flow-control chamber of FIG. 1;

figure 7 is a schematic diagram of the structure of the inductor of figure 1.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 7, an ultrasonic wound cleaning and disinfecting medical gun according to an embodiment of the present invention includes a housing 11 and a soft plug 10 detachably connected in the housing 11, a flow control chamber 16 is disposed in the housing 11, a first inlet tube 14 and a second inlet tube 15 penetrating through a top wall of the housing 11 and communicating with the flow control chamber 16 are disposed in the housing 11, a flow control wheel 18 is rotatably connected to a left wall of the flow control chamber 16 through a first rotating shaft 88, a communicating tube 40 penetrating left and right is disposed on the flow control wheel 18, an induction device 41 is disposed on an inner wall of the communicating tube 40, the induction device is symmetric with respect to an upper position and a lower position and can confirm whether the first inlet tube 14 and the second inlet tube 15 are completely communicated, a blocking device 77 is disposed on the flow control wheel 18, the blocking device is symmetric with respect to the communicating tube 40 and can block and confirm the first inlet tube 14 and the second inlet tube 15, accuse flow chamber 16 right side wall in-connection is equipped with rotates chamber 17, it rotates to be connected with in the chamber 17 right side wall and extends to second pivot 51 in the accuse flow chamber 16, second pivot 51 is located accuse flow chamber 16 internal rotation be connected with the first drive wheel 43 of accuse flow runner 18 meshing, second pivot 51 is located rotate intracavity 17 internal ratchet wheel connection has one-way wheel 71, it is located in chamber 17 diapire one-way wheel 71 rear sliding connection has the button piece 55 of running through the shell 11 bottom surface to rotate, button piece 55 top fixedly connected with rack 52 of one-way wheel 71 meshing, rack 52 top pass through second spring 56 with rotate chamber 17 roof fixed connection, be equipped with the forward spout 53 of opening in the rotation chamber 17 back wall, sliding connection has with rack 52 back wall fixed connection's slider 54 in spout 53, accuse flow chamber 16 left side intercommunication be equipped with first inlet tube 14 and second inlet tube 15 corresponding in position The cleaning solution outlet pipe 19 and the disinfectant outlet pipe 20, the left end of the shell 11 is provided with a connecting groove 23 with a leftward opening, a water outlet pipe 24 communicating the cleaning solution outlet pipe 19 and the disinfectant outlet pipe 20 is arranged in the connecting groove 23, a tightening device 101 which is arranged outside the water outlet pipe 24 and can fasten the cork 10 with different specifications outside the water outlet pipe 24 is arranged in the connecting groove 23, a vibration cavity 22 communicated with the connecting groove 23 is arranged behind the water outlet pipe 24, an ultrasonic vibration device 21 capable of driving liquid in the cork 10 to vibrate is fixedly arranged in the vibration cavity 22, and a switch device 102 capable of controlling the ultrasonic vibration device 21 is fixedly arranged in the shell 11.

Preferably, the tightening device 101 includes a motor 34 installed in the rear wall of the connecting groove 23, a first threaded shaft 29 rotatably connected to the front wall of the connecting groove 23 is installed on the front side surface of the motor 34, a second threaded shaft 30 vertically opposite to the first threaded shaft 29 is rotatably connected to the connecting groove 23, a first nut 26 and a second nut 25 having a thread opposite to the first nut 26 are rotatably connected to the first threaded shaft 29, a second transmission wheel 31 is fixedly connected to the first threaded shaft 29, a third transmission wheel 32 oppositely located to the second transmission wheel 31 is fixedly connected to the second threaded shaft 30, the second transmission wheel 31 and the third transmission wheel 32 are transmitted by a belt 33, a third nut 28 and a fourth nut 27 oppositely located to the first nut 26 and the second nut 25 are rotatably connected to the second threaded shaft 30, the threads of the third nut 28 and the fourth nut 27 are opposite, a fixing device 79 capable of tightly attaching the cork 10 to the water outlet pipe 24 is connected between the first nut 26 and the third nut 28, the second nut 25 and the fourth nut 27, the starting motor 34 drives the first threaded shaft 29 to rotate, the first threaded shaft 29 drives the first nut 26 and the second nut 25 to move and simultaneously drives the second transmission wheel 31 to rotate, the second transmission wheel 31 drives the third transmission wheel 32 to rotate through the belt 33, the third transmission wheel 32 drives the second threaded shaft 30 to rotate, the second threaded shaft 30 drives the third nut 28 and the fourth nut 27 to move, the first nut 26 and the third nut 28, the second nut 25 and the fourth nut 27 drive the fixing device 79 to move, the cork 10 with different specifications can be replaced through the tightening device 101, and wounds of different parts or different people can be cleaned, the use comfort of the patient is improved.

Preferably, the fixing device 79 comprises a first slider 35 fixedly connected to the first nut 26, the bottom end of the first slider 35 is rotatably connected to a second slider 37 through a third rotating shaft 36, the bottom end of the second slider 37 is rotatably connected to a third slider 39 whose bottom end is fixedly connected to the third nut 28 through a fourth rotating shaft 38, the bottom end of the second nut 25 is fixedly connected to a fourth slider 74, the bottom end of the fourth slider 74 is rotatably connected to a fifth slider 76 through a seventh rotating shaft 75, the fifth slider 76 is rotatably connected to a sixth slider 78 whose bottom end is fixedly connected to the fourth nut 27 through an eighth rotating shaft 77, the first slider 35 is driven by extrusion or thrust to rotate the third rotating shaft 36, the third slider 39 drives the fourth rotating shaft 38 to rotate, the fourth slider 74 is driven by extrusion or thrust to rotate the seventh rotating shaft 75, and the sixth slider 78 drives the eighth rotating shaft 77 to rotate, the joint of the soft plug 10 and the outer wall of the water outlet pipe 24 can be tightly connected together through the fixing device 79, so that the circulation of water is ensured, no water flows out in the working process, the work is more convenient and sanitary, and the use comfort of a patient is improved.

Preferably, induction system 41 including set up in induction tank 70 that just the opening is right in communicating pipe 40, the first sensor 69 of induction tank 70 left side wall fixedly connected with, sliding connection has the ball shell 67 of internally mounted rollable ball 70 in induction tank 70, ball shell 67 with induction tank 70 through overlap in the outer third spring 68 fixed connection of first sensor 69, can show two is installed to shell 11 roof the response lamp 12 of first sensor 69 state, the rolling ball 72 receives the extrusion and drives ball shell 67 and slide to the inslot, and ball shell 67 extrudes third spring 68 and the first sensor 69 of starting, and induction system 41 has response lamp 12, the simple and clear state of telling medical personnel circulation, makes things convenient for medical personnel's operation, improves work efficiency.

Preferably, blocking device 77 including set up in on the accuse flow runner 18 with communicating pipe 40 position symmetry and opening right blocking groove 64, blocking groove 64 left wall fixedly connected with second sensor 65, sliding connection has blocking block 42 in blocking groove 64, blocking block 42 left wall through overlap in second sensor 65 outer first spring 66 with blocking groove 64 left wall fixed connection, shell 11 top is equipped with and can show the jam lamp 13 of second sensor 65 state, blocking block 42 receives the extrusion to sliding extrusion first spring 66 in the groove and triggers second sensor 65, blocking device 77 has blocking lamp 13, simple and clear tells medical personnel's circulation state, makes things convenient for medical personnel's operation, improves work efficiency.

Preferably, switching device 102 including set up in the decurrent switch slot 60 of opening in shell 11, switch slot 60 right side wall fixedly connected with third sensor 62, it is connected with fifth pivot 59 to rotate between the wall around in the switch slot 60, fixedly connected with downwardly extending's trigger 57 on the fifth pivot 59, fifth pivot 59 below fixedly connected with fixed block 61, manual drive trigger 57 rotates, and trigger 57 drives fifth pivot 59 and rotates, and fifth pivot 59 drives fixed block 61 and removes, and fixed block 61 triggers third sensor 62, can control the work of ultrasonic vibrator through switching device 102, along with opening along with stopping, convenient operation improves medical personnel's work efficiency.

Preferably, ultrasonic vibration device 21 including set up in ultrasonic vibrator 21 on the wall of vibrations chamber 22 left side, ultrasonic vibration device 21 drives washing liquid or antiseptic solution vibrations in the cork 10, along with debris waste residue and the bacterium of patient's wound are taken away in the vibrations of liquid, play and wash the wound and disinfect's effect of disinfecting, mechanical vibrations wash convenient and fast more and effective than manual cleaning, alleviate medical personnel's work, improve medical personnel's work efficiency, the quick washing wound also can ensure patient's life safety simultaneously.

In the initial state, the motor 34 is turned off, the ultrasonic vibrator 21 is turned off, the stop lamp 13 is turned off, the induction lamp 12 is turned off, the first spring 66 is compressed, the second spring 56 is extended in tension, the third spring 68 is compressed, the button block 55 is not stressed, and the wrench 57 is not stressed.

When a wound needs to be cleaned, the starting motor 34 is used for tightly connecting the cork 10 suitable for a patient with the water outlet pipe 24, cleaning liquid and disinfectant water needed by the patient are communicated with corresponding pipelines through the water suction pipe, the first inflow pipe 14 and the water outlet pipe 24 are conducted by pressing the button block 55 to block the second inflow pipe 15, so that the cleaning liquid enters the cork 10 to cover the wound of the patient, and the wrench 57 is pressed to start the ultrasonic vibrator 21;

when the conduction pipe needs to be replaced, the button block 55 is pressed to drive the rack 52 to move upwards, the rack 52 drives the one-way wheel 71 to rotate, the one-way wheel 71 drives the first transmission wheel 43 to rotate through the second rotating shaft 51, the first transmission wheel 43 drives the flow control rotating wheel 18 to rotate, and the flow control rotating wheel 18 rotates to switch the conduction pipe;

when the wound needs to be disinfected, the starting motor 34 releases the cork 10 filled with the cleaning solution for cleaning the wound, the liquid is washed out through the interface, the starting motor 34 is connected with a new cork 10, the button block 55 is pressed to conduct the second inflow pipe 15 connected with the disinfectant, and the disinfectant covers the wound pressing wrench 57 for disinfection.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an ultrasonic wave wound clearance disinfection medical gun based on biological science technique, includes the shell and can dismantle connect in soft stopper in the shell, its characterized in that: a flow control cavity is arranged in the shell, a first inlet pipe and a second inlet pipe which penetrate through the top wall of the shell and are communicated with the flow control cavity are arranged in the shell, a flow control rotating wheel is rotatably connected to the left wall of the flow control cavity through a first rotating shaft, a communicating pipe which penetrates through the flow control rotating wheel from left to right is arranged on the flow control rotating wheel, an induction device which is symmetrical to the upper position and the lower position and can confirm whether the first inlet pipe and the second inlet pipe are completely communicated is fixedly arranged on the inner wall of the communicating pipe, a blocking device which is symmetrical to the communicating pipe and can block the first inlet pipe and the second inlet pipe and confirm is fixedly arranged on the flow control rotating wheel, a rotating cavity is communicated to the right wall of the flow control cavity, a second rotating shaft which extends into the flow control cavity is rotatably connected to the right wall of the rotating cavity, and a first driving wheel which is meshed with the flow control rotating wheel is rotatably connected to the second rotating shaft in the flow control cavity, the second rotating shaft is positioned in the rotating cavity, a ratchet wheel is connected with a one-way wheel, a button block penetrating through the bottom surface of the shell is connected in the bottom wall of the rotating cavity at the rear part of the one-way wheel in a sliding manner, the top end of the button block is fixedly connected with a rack meshed with the one-way wheel, the top of the rack is fixedly connected with the top wall of the rotating cavity through a second spring, a chute with a forward opening is arranged in the rear wall of the rotating cavity, a sliding block fixedly connected with the rear wall of the rack is connected in the chute in a sliding manner, the left side of the flow control cavity is communicated with a cleaning liquid outlet pipe and a disinfectant outlet pipe which correspond to the first inlet pipe and the second inlet pipe in position, a connecting groove with a left opening is arranged at the left end of the shell, a water outlet pipe communicated with the cleaning liquid outlet pipe and the disinfectant outlet pipe is arranged in the connecting groove, and a tightening device which is arranged, the utility model discloses a soft stopper, including the outlet pipe, the outlet pipe rear be equipped with the vibrations chamber of spread groove intercommunication, the vibrations intracavity sets firmly can drive the ultrasonic wave vibrator of liquid vibrations in the soft stopper, set firmly in the shell can control ultrasonic wave vibrator's switching device.

2. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 1, wherein: the tightening device comprises a motor arranged in the rear wall of the connecting groove, a first threaded shaft rotatably connected with the front wall of the connecting groove is arranged on the front side surface of the motor, a second threaded shaft opposite to the first threaded shaft in position is rotatably connected with the connecting groove, a first nut and a second nut opposite to the first nut in thread are rotatably connected with the first threaded shaft, a second driving wheel is fixedly connected with the first threaded shaft, a third driving wheel opposite to the second driving wheel is fixedly connected with the second threaded shaft, the second driving wheel and the third driving wheel are driven by a belt, a third nut and a fourth nut opposite to the first nut and the second nut in position are rotatably connected with the second threaded shaft, the third nut and the fourth nut are opposite in thread, and the first nut and the third nut are rotatably connected with the third nut, And a fixing device capable of tightly attaching the soft plug to the water outlet pipe is fixedly connected between the second nut and the fourth nut.

3. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 2, wherein: fixing device include fixed connection in the first slider of first nut, first slider bottom is rotated through the third pivot and is connected with the second slider, second slider bottom rotate through the fourth pivot be connected with the bottom with third nut fixed connection's third slider, second nut bottom fixedly connected with fourth slider, fourth slider bottom is rotated through the seventh pivot and is connected with the fifth slider, the fifth slider rotate through the eighth pivot be connected with the bottom with fourth nut fixed connection's sixth slider.

4. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 1, wherein: induction system including set up in the intercommunication pipe and opening response groove to the right, the first sensor of response groove left side wall fixedly connected with, the response inslot sliding connection has internally mounted to have the ball shell of roll ball, the ball shell with the response groove through overlap in the outer third spring fixed connection of first sensor, the response lamp that can show two is installed to the shell roof the response lamp of first sensor state.

5. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 1, wherein: the blocking device comprises a blocking groove which is arranged on the flow control rotating wheel and is symmetrical to the communicating pipe in position and provided with a right opening, a second sensor is fixedly connected to the left wall of the blocking groove, a blocking block is connected to the blocking groove in a sliding mode, the left wall of the blocking block is sleeved with a first spring outside the second sensor and fixedly connected to the left wall of the blocking groove, the top of the shell is provided with a blocking lamp capable of showing the state of the second sensor, and the right end of the blocking block can be blocked by the second flow inlet pipe.

6. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 1, wherein: switching device including set up in the switch slot that the opening is decurrent in the shell, switch slot right side wall fixedly connected with third sensor, it is connected with the fifth pivot to rotate between the wall before the switch slot is inside, fixedly connected with downwardly extending's trigger in the fifth pivot, fixedly connected with fixed block below the fifth pivot.

7. The bioscience technology-based ultrasonic wound cleaning and disinfecting medical gun as claimed in claim 1, wherein: the ultrasonic vibration device comprises an ultrasonic vibrator arranged on the left wall of the vibration cavity.