阅读说明：本技术 一种消化科护理呕吐接收装置 (Gastroenterology nursing vomiting receiving arrangement ) 是由 张海燕 辛颖 徐涛 于萌 陈秀娟 于 2020-03-19 设计创作，主要内容包括：本发明公开了一种消化科护理呕吐接收装置,包括混合箱,所述混合箱的顶部设置有分离箱,混合箱的顶部连通有连接管,连接管的顶端贯穿至分离箱的顶部并固定连接有过滤网,分离箱的内腔设置有固定在分离箱前侧和后侧内壁上的分流块。本发明通过使用者在呕吐时对准接收管,然后呕吐物会进入到分离箱的内腔,然后经过分流块的分流从分流块的两侧落到过滤网上进行过滤,水分直接进入到混合仓内,进行混合除异味处理,再通过排液管排出,方便使用者进行清理工作,也能够减少异味的散发,使得护理员能够有一个舒适的工作环境,护理员也不会出现眩晕等不适感,方便护理员的使用,而且排出的水有经过处理,也不对环境造成污染。(The invention discloses a gastroenterology nursing vomit receiving device which comprises a mixing box, wherein a separating box is arranged at the top of the mixing box, a connecting pipe is communicated with the top of the mixing box, the top end of the connecting pipe penetrates through the top of the separating box and is fixedly connected with a filter screen, and shunting blocks fixed on the inner walls of the front side and the rear side of the separating box are arranged in an inner cavity of the separating box. According to the invention, a user aims at the receiving pipe during vomiting, then vomit enters the inner cavity of the separation box, then falls onto the filter screen from two sides of the shunting block through shunting of the shunting block for filtering, water directly enters the mixing bin for mixing and peculiar smell removal treatment, and is discharged through the liquid discharge pipe, so that the cleaning work of the user is facilitated, the emission of peculiar smell can be reduced, a nursing staff can have a comfortable working environment, discomfort such as dizziness and the like can not occur to the nursing staff, the use of the nursing staff is facilitated, and the discharged water is treated, so that the environment is not polluted.)

1. The utility model provides a gastroenterology nursing vomiting receiving arrangement, includes mixing box (1), its characterized in that: the top of the mixing box (1) is provided with a separation box (2), the top of the mixing box (1) is communicated with a connecting pipe (3), the top end of the connecting pipe (3) penetrates through the top of the separation box (2) and is fixedly connected with a filter screen (7), an inner cavity of the separation box (2) is provided with a shunting block (8) fixed on the front side and the rear side inner wall of the separation box (2), the right side of the separation box (2) is provided with a material taking bin door (9), the left side of the inner cavity of the separation box (2) is fixedly provided with a heating device (5), four corners of the top of the mixing box (1) are respectively provided with a compression mechanism (6), the bottom end of the connecting pipe (3) penetrates through the inner cavity of the mixing box (1) and is communicated with a hose (4), the inner cavity of the mixing box (1) is provided with a heating device (5), the bottom of the mixing, a locking mechanism (13) is arranged at the center of the bottom of the moving mechanism (12), and a receiving pipe (10) is communicated with the top of the separation box (2).

2. The gastroenterology vomiting receiving apparatus of claim 1, wherein: the bottom of separator box (2) both sides all fixedly connected with handheld spanner (11), the shape of handheld spanner (11) is the font of returning.

3. The gastroenterology vomiting receiving apparatus of claim 1, wherein: the top of filter screen (7) is inside sunken arc, the bottom of reposition of redundant personnel piece (8) is outside outstanding arc, filter screen (7) and reposition of redundant personnel piece (8) looks adaptation.

4. The gastroenterology vomiting receiving apparatus of claim 1, wherein: compressing mechanism (6) is including welding fixed plate (61) on mixing box (1), the top welding of fixed plate (61) has slide bar (62), spring (63) have been cup jointed on the surface of slide bar (62), the top sliding connection on slide bar (62) surface has fly leaf (64) of fixing in separator box (2) bottom, the both ends of spring (63) respectively with fixed plate (61) and fly leaf (64) fixed connection, the top of slide bar (62) is run through inner chamber and fixedly connected with dog (65) to separator box (2), slide bar (62) and separator box (2) sliding connection.

5. The gastroenterology vomiting receiving apparatus of claim 1, wherein: the heating device (5) comprises a limiting slide rail (51) fixedly connected with the inner wall of the periphery of the mixing box (1), a motor (53) fixed at the bottom of the inner cavity of the mixing box (1) and a mixing bin (52) arranged in the inner cavity of the mixing box (1) and positioned between the limiting slide rail (51) and the motor (53), two sides of the top of the mixing bin (52) are fixedly connected with limiting slide rods (58) which slide in the inner cavities of the limiting slide rails (51), the bottom of the mixing bin (52) is fixedly connected with a movable frame (55), an output shaft of the motor (53) is fixedly connected with a rotating disc (54), the bottom of the front side of the turntable (54) is fixedly connected with a movable pin (56) which slides in the inner cavity of the movable frame (55), two sides, the front side and the rear side of the mixing bin (52) are fixedly connected with a first spring (57), one end of the first spring (57) far away from the mixing bin (52) is fixed on the inner wall of the mixing box (1).

6. The gastroenterology vomiting receiving apparatus of claim 5, wherein: two sides of the bottom of the mixing bin (52) are communicated with a liquid discharge pipe (59), one end, far away from the mixing bin (52), of the liquid discharge pipe (59) penetrates through the outer side of the mixing box (1), and a valve body located on the outer side of the mixing box (1) is arranged on the surface of the liquid discharge pipe (59).

7. The gastroenterology vomiting receiving apparatus of claim 1, wherein: the moving mechanism (12) comprises a bottom plate (121) fixed to the bottom of the mixing box (1), and moving wheels (122) are fixedly mounted at four corners of the bottom plate (121).

8. The gastroenterology vomiting receiving apparatus of claim 7, wherein: the locking mechanism (13) comprises a fixed shell (131) fixed at the bottom of the bottom plate (121), the top of the right side of the fixed shell (131) is fixedly connected with a fixed thread sleeve (132), the top of the fixed threaded sleeve (132) is fixedly connected with the bottom plate (121), the right side of the fixed threaded sleeve (132) is connected with a threaded rod (133) through threads, the left end of the threaded rod (133) penetrates through the left side of the fixed shell (131), the surface of the threaded rod (133) is in threaded connection with a sliding threaded sleeve (134) positioned in the inner cavity of the fixed shell (131), a long rod (136) is arranged at the bottom of the inner cavity of the fixed shell (131) in a penetrating way, a sliding block (135) matched with the sliding thread sleeve (134) is fixedly connected at the top of the long rod (136), the surface cover of stock (136) is equipped with spring two (137), the both ends of spring two (137) respectively with the inner wall fixed connection of sliding block (135) and stationary housing (131).

9. The gastroenterology vomiting receiving apparatus of claim 8, wherein: the front surface and the rear surface of the sliding threaded sleeve (134) are attached to the front inner wall and the rear inner wall of the inner cavity of the fixed shell (131), and the inner walls on two sides of the inner cavity of the fixed shell (131) incline oppositely.

Technical Field

The invention relates to the field of digestive science and technology, in particular to a nursing vomit receiving device for a gastroenterology department.

Background

The digestive department includes the digestive internal medicine and the digestive surgery department, is a clinical department set in all levels of hospitals for diagnosing and treating digestive system diseases, and the diseases to be treated include diseases of organs such as esophagus, stomach, intestine, liver, gallbladder, pancreas, peritoneum, mesentery, omentum and the like.

In gastroenterology nursing, the phenomenon of vomiting often appears, and then the nurse just need use vomitus receiving arrangement at the during operation, be used for collecting the vomitus, avoid the patient to vomit subaerial with the vomitus, follow-up still need the nurse to clear up, improve nurse's working strength, and vomitus receiving arrangement on the present market is the household utensils of similar spittoon, the function that only simple possesses the splendid attire, it can't be with moisture and solid matter separation in the vomitus, and then in the processing of later stage, inconvenient nurse clears up receiving arrangement with the vomitus, and owing to having separated moisture, consequently can not make dirty with the nurse, reduce the giving off of peculiar smell simultaneously, the nurse also can not be because of smelling amazing peculiar smell, and discomfortabled feelings such as giddiness appear, inconvenient nurse uses.

Disclosure of Invention

The invention aims to provide a vomit receiving device for digestive nursing, which has the advantages of facilitating the cleaning work of a caregiver and reducing the emission of peculiar smell, and solves the problems that the vomit receiving device on the market is a vessel similar to a spittoon, is simply provided with a containing function, cannot separate water and solid matters in the vomit, is inconvenient for the caregiver to clean the vomit out of the receiving device in later treatment, cannot pollute the caregiver due to the separation of the water, simultaneously reduces the emission of peculiar smell, and is inconvenient for the caregiver to use due to the fact that the caregiver smells pungent peculiar smell to cause discomfort such as vertigo.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a gastroenterology nursing vomiting receiving arrangement, includes the mixing box, the top of mixing box is provided with the separator box, the top intercommunication of mixing box has the connecting pipe, the top of connecting pipe is run through to the top and the fixedly connected with filter screen of separator box, the inner chamber of separator box is provided with the branch stream block of fixing on separator box front side and rear side inner wall, the right side of separator box is installed and is got the bin gate, the left side fixed mounting of separator box inner chamber has heating device, the four corners at mixing box top all is provided with compression mechanism, the bottom of connecting pipe is run through to the inner chamber and the intercommunication of mixing box has the hose, the inner chamber of mixing box is provided with heating device, the bottom of mixing box is provided with moving mechanism, the center department of moving mechanism bottom is provided with locking mechanism, the top intercommunication of separator box has the receiver tube.

Preferably, the bottom parts of the two sides of the separation box are fixedly connected with hand-held wrenches, and the hand-held wrenches are in a shape like a Chinese character 'hui'.

Preferably, the top of the filter screen is an inward concave arc, the bottom of the shunting block is an outward convex arc, and the filter screen is matched with the shunting block.

Preferably, the compression mechanism includes the fixed plate of welding on the mixing box, the top welding of fixed plate has the slide bar, the spring has been cup jointed on the surface of slide bar, the top sliding connection on slide bar surface has the fly leaf of fixing in the separator box bottom, the both ends of spring respectively with fixed plate and fly leaf fixed connection, the top of slide bar runs through to the inner chamber and the fixedly connected with dog of separator box, slide bar and separator box sliding connection.

Preferably, heating device include with the mixing box inner wall fixed connection's all around spacing slide rail with fix the motor in mixing box inner chamber bottom and set up at the mixing box inner chamber and be located the mixed storehouse between spacing slide rail and the motor, the equal fixedly connected with in the both sides at mixed storehouse top is at the gliding spacing slide bar of spacing slide rail inner chamber, the bottom fixedly connected with adjustable shelf in mixed storehouse, the output shaft fixedly connected with carousel of motor, the bottom fixedly connected with of carousel front side is at the gliding removable pin of adjustable shelf inner chamber, the both sides and the front side and the equal fixedly connected with spring one in rear side in mixed storehouse, the one end that mixed storehouse was kept away from to spring one is fixed on the inner wall of mixing box.

Preferably, both sides of the bottom of the mixing bin are communicated with liquid discharge pipes, one end, far away from the mixing bin, of each liquid discharge pipe penetrates through the outer side of the mixing box, and a valve body located on the outer side of the mixing box is arranged on the surface of each liquid discharge pipe.

Preferably, the moving mechanism comprises a bottom plate fixed at the bottom of the mixing box, and moving wheels are fixedly mounted at four corners of the bottom plate.

Preferably, locking mechanism is including fixing the set casing in the bottom plate bottom, the top fixedly connected with fixed thread cover on set casing right side, the top and the bottom plate fixed connection of fixed thread cover, the right side threaded connection of fixed thread cover has the threaded rod, the left end of threaded rod runs through to the left side of set casing, the surperficial threaded connection of threaded rod has the slip thread cover that is located the set casing inner chamber, the bottom of set casing inner chamber is run through and is provided with the stock, the top fixedly connected with of stock and the sliding block of slip thread cover looks adaptation, the surperficial cover of stock is equipped with spring two, the both ends of spring two respectively with the inner wall fixed connection of sliding block and set casing.

Preferably, the front surface and the rear surface of the sliding threaded sleeve are attached to the front inner wall and the rear inner wall of the inner cavity of the fixed shell, and the inner walls on two sides of the inner cavity of the fixed shell incline oppositely.

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

1. according to the invention, the user aims at the receiving pipe during vomiting, then vomit enters the inner cavity of the separation box, then falls onto the filter screen from two sides of the flow distribution block through the flow distribution of the flow distribution block for filtering, water directly enters the mixing bin for mixing and odor removal treatment, and is discharged through the liquid discharge pipe, the separation box can be pressed downwards to be matched with the flow distribution block through the filter screen for use, so that the filtered matter on the filter screen is extruded, redundant water is extruded, finally the mixture is dried through the heating device, the material taking bin door is opened to take out the dried filtered matter, so that the vomit is dried when a caregiver cleans the vomit, the clothes of the caregiver cannot be dirtied, the user can conveniently clean the vomit, the odor emission can be reduced, the caregiver can have a comfortable working environment, and the caregiver cannot feel dizzy and the like, make things convenient for nurse's use, and the discharged water has through handling, also not cause the pollution to the environment, this gastroenterology nursing vomiting receiving arrangement, possess and make things convenient for nurse to clear up the work, reduce the advantage of giving off of peculiar smell, solved and vomitus receiving arrangement on the present market is the household utensils of similar spittoon generally, the function that only is simple to possess the splendid attire, it can't be with moisture and solid matter separation in the vomitus, and then in the processing of later stage, inconvenient nurse clears up out receiving arrangement with the vomitus, and because having separated moisture, consequently can not make dirty with the nurse, reduce giving off of peculiar smell simultaneously, the nurse also can not be because of smelling amazing peculiar smell, and uncomfortable feelings such as vertigo appear, the problem of inconvenient nurse's use.

2. According to the invention, through the arrangement of the handheld wrench, when a user presses the separating box, the user can press the separating box by holding the handheld wrench, so that the surface of the separating box is prevented from being contacted, and therefore, the separating box can not be scalded due to high temperature in the separating box, and the user is protected.

3. According to the invention, through the arrangement of the compression mechanism, when the separation box is pressed downwards, the spring is compressed under the action of the movable plate and the fixed plate, so that the separation box moves downwards, and after the pressing is finished, the separation box can be upwards bounced to reset under the action of the spring, so that the subsequent operation is convenient.

4. According to the invention, through the arrangement of the heating device, the filtered water and the proper medicament can be mixed and stirred, so that the peculiar smell in the water is decomposed, and the environment is not polluted when the water is discharged.

5. According to the invention, through the arrangement of the locking mechanism, after the receiving device is moved, the long rod extends out and is contacted with the ground, so that resistance is caused, the receiving device is not moved any more, and the use by a user is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial enlarged view of A in FIG. 1 according to the present invention.

In the figure: 1. a mixing box; 2. a separation tank; 3. a connecting pipe; 4. a hose; 5. a heating device; 6. a compression mechanism; 7. a filter screen; 8. a shunting block; 9. a material taking bin gate; 10. a receiving tube; 11. a hand-held wrench; 12. a moving mechanism; 13. a locking mechanism; 61. a fixing plate; 62. a slide bar; 63. a spring; 64. a movable plate; 65. a stopper; 51. a limiting slide rail; 52. a mixing bin; 53. a motor; 54. a turntable; 55. a movable frame; 56. a movable pin; 57. a first spring; 58. a limiting slide bar; 59. a liquid discharge pipe; 121. a base plate; 122. a moving wheel; 131. a stationary case; 132. fixing the threaded sleeve; 133. a threaded rod; 134. sliding the threaded sleeve; 135. a slider; 136. a long rod; 137. and a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the invention provides a technical scheme, a gastroenterology nursing vomit receiving device, comprising a mixing box 1, a separating box 2 is arranged on the top of the mixing box 1, a connecting pipe 3 is communicated with the top of the mixing box 1, the top end of the connecting pipe 3 penetrates to the top of the separating box 2 and is fixedly connected with a filter screen 7, a flow distribution block 8 fixed on the inner wall of the front side and the rear side of the separating box 2 is arranged in the inner cavity of the separating box 2, a material taking bin door 9 is arranged on the right side of the separating box 2, a heating device 5 is fixedly arranged on the left side of the inner cavity of the separating box 2, compression mechanisms 6 are arranged on four corners of the top of the mixing box 1, a hose 4 is communicated with the inner cavity of the connecting pipe 3, the heating device 5 is arranged in the inner cavity of the mixing box 1, a moving mechanism 12 is arranged at the bottom of the mixing, the top of the separation box 2 is communicated with a receiving pipe 10, the bottom of the two sides of the separation box 2 is fixedly connected with a handheld wrench 11, the handheld wrench 11 is in a shape of a Chinese character 'hui', a user can press the separation box 2 by the handheld wrench 11 through the arrangement of the handheld wrench 11, the surface contact with the separation box 2 is avoided, and therefore the surface contact with the separation box 2 is avoided, the scald caused by the high temperature inside the separation box 2 is avoided, the user is protected, the top of the filter screen 7 is in an inward concave arc shape, the bottom of the shunting block 8 is in an outward convex arc shape, the filter screen 7 is matched with the shunting block 8, the compression mechanism 6 comprises a fixed plate 61 welded on the mixing box 1, a sliding rod 62 is welded at the top of the fixed plate 61, a spring 63 is sleeved on the surface of the sliding rod 62, a movable plate 64 fixed at the bottom of the separation box 2 is connected at the top of the surface of the sliding rod 62 in a sliding manner, the top end of the slide bar 62 penetrates through the inner cavity of the separation box 2 and is fixedly connected with a stop block 65, the slide bar 62 is connected with the separation box 2 in a sliding manner, through the arrangement of the compression mechanism 6, when the separation box 2 is pressed downwards, the spring 63 is compressed under the action of the movable plate 64 and the fixed plate 61, so that the separation box 2 moves downwards, after the pressing is completed, the separation box 2 can be upwards bounced to reset under the action of the spring 63, so as to be convenient for subsequent operation, the heating device 5 comprises a limiting slide rail 51 fixedly connected with the peripheral inner wall of the mixing box 1, a motor 53 fixed at the bottom of the inner cavity of the mixing box 1 and a mixing bin 52 arranged in the inner cavity of the mixing box 1 and positioned between the limiting slide rail 51 and the motor 53, the limiting slide rail 58 sliding in the inner cavity of the limiting slide rail 51 is fixedly connected with two sides of the top of the mixing bin 52, the bottom of the mixing bin 52, the bottom of the front side of the rotating disc 54 is fixedly connected with a movable pin 56 which slides in the inner cavity of the movable frame 55, two sides of the mixing bin 52 and both the front side and the rear side are fixedly connected with a spring I57, one end of the spring I57 far away from the mixing bin 52 is fixed on the inner wall of the mixing box 1, through the arrangement of the heating device 5, filtered water and proper medicament can be mixed and stirred, so that peculiar smell in the water can be decomposed, the water cannot pollute the environment when being discharged, two sides of the bottom of the mixing bin 52 are both communicated with a liquid discharge pipe 59, one end of the liquid discharge pipe 59 far away from the mixing bin 52 penetrates to the outer side of the mixing box 1, a valve body which is positioned at the outer side of the mixing box 1 is arranged on the surface of the liquid discharge pipe 59, the moving mechanism 12 comprises a bottom plate 121 which is fixed at the bottom of the mixing box 1, moving wheels 122 are fixedly installed at four corners of, the top of the right side of the fixed shell 131 is fixedly connected with a fixed thread bushing 132, the top of the fixed thread bushing 132 is fixedly connected with the bottom plate 121, the right side of the fixed thread bushing 132 is in threaded connection with a threaded rod 133, the left end of the threaded rod 133 penetrates to the left side of the fixed shell 131, the surface of the threaded rod 133 is in threaded connection with a sliding thread bushing 134 positioned in the inner cavity of the fixed shell 131, the bottom of the inner cavity of the fixed shell 131 is provided with a long rod 136 in a penetrating manner, the top of the long rod 136 is fixedly connected with a sliding block 135 matched with the sliding thread bushing 134, the surface of the long rod 136 is sleeved with a spring II 137, two ends of the spring II 137 are respectively and fixedly connected with the sliding block 135 and the inner wall of the fixed shell 131, through the arrangement of the locking mechanism 13, after the receiving device is moved, the long rod 136 extends out and is contacted with the ground to cause resistance, so that, the inner walls of the fixed housing 131 on both sides of the inner cavity are inclined toward each other.

The working principle is as follows: when the vomit collector is used, a user aims at the receiving pipe 10 during vomit, then vomit enters the inner cavity of the separation box 2, then the vomit falls onto the filter screen 7 from two sides of the flow distribution block 8 through the flow distribution of the flow distribution block 8 for filtering, water directly enters the mixing bin 52 through the connecting pipe 3 and the hose 4 for mixing and odor removal treatment, and is discharged through the liquid discharge pipe 59, the user can hold the hand wrench 11 by hand, the connecting pipe 3 and the filter screen 7 in the inner cavity of the separation box 2 can press the separation box 2 downwards to use through the matching of the filter screen 7 and the flow distribution block 8, filter substances on the filter screen 7 are squeezed, excessive water is squeezed out, the separation box 2 can be reset under the action of the compression mechanism 6 during the period, finally the separation box is dried through the heating device 5, the material taking bin door 9 is opened to take out the dried filter substances, so that when a nurse cleans the vomit, vomitus is dry, thereby can not make nursing staff's clothing dirty, the person of facilitating the use clears up the work, when handling in the later stage, starter motor 53 drives carousel 54 and rotates, under the effect of activity round pin 56 and adjustable shelf 55, it slides about driving mixed storehouse 52, in order to carry out the mixed work, because be under the condition of adding the medicament, can reduce giving off of peculiar smell, make nursing staff can have a comfortable operational environment, discomfort such as dizzy also can not appear in nursing staff, make things convenient for nursing staff's use, and the discharged water has through handling, also do not cause the pollution to the environment.

In summary, the following steps: the vomit receiving device for nursing of the gastroenterology department aims at the receiving pipe 10 when a user vomits, then vomit can enter the inner cavity of the separation box 2, then falls onto the filter screen 7 from the two sides of the flow dividing block 8 through the flow dividing of the flow dividing block 8 for filtering, water directly enters the mixing bin 52 for mixing and peculiar smell removing treatment, and is discharged through the liquid discharge pipe 59, the separation box 2 can be pressed downwards to be used through the matching of the filter screen 7 and the flow dividing block 8 to extrude the filtered matter on the filter screen 7, excessive water is extruded out, finally, the heating device 5 is used for drying, the material taking bin door 9 is opened to take out the dried filtered matter, so that when the vomit is cleaned by a nurse, the vomit is dry, the clothes of the nurse cannot be dirty, the nursing receiving device is convenient for the user to clean, the emission of peculiar smell can be reduced, and the nurse can have a comfortable working environment, the nurse also can not appear uncomfortable feelings such as vertigo, make things convenient for nurse's use, and the discharged water has through the processing, also can not cause the pollution to the environment, this gastroenterology nursing vomits receiving arrangement, possess and make things convenient for nurse to clear up the work, reduce the advantage of giving off of peculiar smell, solved and vomitus receiving arrangement on the market at present is the household utensils of similar spittoon, only the simple function that possesses the splendid attire, it can't be with moisture and solid matter separation in the vomitus, and then in the processing of later stage, inconvenient nurse clears up receiving arrangement with the vomitus, and because having separated moisture, consequently can not make dirty with the nurse, reduce giving off of peculiar smell simultaneously, the nurse also can not be because of smelling amazing peculiar smell, and discomfortabled feelings such as vertigo appear, the problem of inconvenient nurse's use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.