Abstract:
A squeezing gun for two-part medical viscous fluid that simultaneously squeezes two different kinds of medical viscous fluid contained in a double cartridge including two tubes containing the respective different kinds of fluids. Two horizontal scroll bars are moved horizontally to actuate the squeezing of the fluids and are driven by a driving motor.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention is about squeezing gun for two-part medical viscous fluid that extrudes two different kinds of medical viscous fluid at the same time that are contained in double cartridge where two tubes are combined into one body and when explained in more detail, this invention is to extrude simultaneously two kinds of medical viscous fluid (hereinafter call viscous fluid) that are contained in double cartridge while two horizontal scroll bars are moving horizontally as driving power of driving motor is being reduced when button of squeezing gun which has the shape of pistol is pushed. 
     2. Description of the Prior Art 
     Existing squeezing gun for two-part medical viscous fluid has had the shape of pistol overall and in the case that users squeeze viscous fluid in double cartridge which has been installed in cartridge insertion edge of squeezing gun, users should squeeze simultaneously two different kinds of viscous fluid contained in double cartridge by first pulling a trigger and then two horizontal scroll bars moving forward horizontally. 
     Double cartridge mentioned above contains two tubes which are combined in one body and two different kinds of viscous fluid are contained in the two tubes respectively and viscous fluid contained in double cartridge is gel type which has high and stiff viscosity and the viscous fluid is used to mold from the tooth when putting crown on tooth in dentistry. 
     It has been difficult for user to squeeze viscous fluid with high viscosity by only the power of index finger and squeezing requires considerable power. Besides, viscous fluid has not been squeezed correctly in the position that is intended to be targeted because edge of double cartridge is shaken from which viscous fluid is squeezed. 
     SUMMARY OF THE INVENTION 
     This invention is to solve the problem mentioned above. This invention has the technological project to solve the problem as follows. First, stiff viscous fluid in double cartridge can be squeezed easily by only a little power that presses push button that supplies power to driving motor by enabling horizontal scroll bar to be moved horizontally with electric power of driving motor where decelerator is installed. Second, viscous fluid can be injected conveniently in the position that is targeted by detaching double cartridge from squeezing gun easily. 
     The feature of this invention to achieve the purpose mentioned above can be summarized as follows. 
     Case main body whose forward area is open is installed at the upper side of handle where push button is installed. The open forward area of case main body is formed by cartridge insertion parts where rear area flange part of double cartridge in which a pair of tubes that are filled with different viscous fluid is inserted and fixed. A pair of horizontal scroll bars that move forward when push button is pressed is installed in the case main body. Screw thread is formed around all outer circumference edges of horizontal scroll bar and key way is formed in horizontal scroll bar throughout the length in transverse direction and a pair of horizontal scroll bars mentioned above are protruded backward through holes that are formed on rear wall of housing and the rear side of horizontal scroll bars of both sides which are protruded backward is installed so that the rear side can be supported by bracket. Springs that move horizontally scroll bars of both sides backward are installed in guide pin that is installed between rear wall and bracket and driving motor which is equipped with decelerator is installed in the case main body and driving gear is installed on the axis of rotation of decelerator. A pair of horizontal scroll bars penetrates the case main body and housing whose driving gear is exposed forward is installed in the case main body. Gear body of rotation which engages driving gear is installed in both sides of housing and protruded key that is directed to key way of tube type main body that is inserted outside of horizontal scroll bar and that enables device to move vertically is formed inside of gear body of rotation. In squeezing gun for two-part medical viscous fluid which is made up of final gear engages driving gear, screw holes which correspond to screw threads of horizontal scroll bar are formed in both sides of a pair of horizontal scroll bar which is located in the housing mentioned above. A pair of clutches which form slope part outside with springs interposed are installed elastically. Cover which forms two clutch adhesion parts that close up a pair of clutches is installed in the open forward upper side of housing mentioned above in hinged mode. 
     This invention regarding squeezing gun for two-part medical viscous fluid has the advantage in squeezing stiff viscous fluid in double cartridge easily by a little power that presses push button of switch shape which supplies power to driving motor by enabling horizontal scroll bar to be moved horizontally with electric power of driving motor where decelerator is installed. 
     Besides, this invention enables viscous fluid to be injected correctly to the targeted place by easily detaching double cartridge from squeezing gun as horizontal scroll bar can be retracted rapidly due to elasticity of spring when opening cover installed upper side of squeezing gun that can be opened or closed in hinged mode after stopping squeezing viscous fluid in double cartridge. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above object and other characteristics and advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings, in which: 
         FIG. 1  refers to cross section that shows the first implementation of this invention. 
         FIG. 2  refers to low section diagram which shows the state of installation of power delivery means and horizontal scroll bar which are installed in this invention. 
         FIG. 3  refers to A-A line cross section of  FIG. 1 . 
         FIG. 4  refers to cross section which shows the second implementation example of this invention. 
         FIG. 5  refers to horizontal section which shows the state of installation of power delivery means and horizontal bar that is installed in this invention shown in  FIG. 4 . 
         FIG. 6  refers to B-B line cross section of  FIG. 4 . 
         FIG. 7  refers to horizontal section which shows the state of installation of clutch that is installed in the second implementation example. 
         FIG. 8  refers to longitudinal section which shows the state of installation of clutch and horizontal scroll bar that are installed in the second implementation example. 
         FIG. 9  refers to partial perspective view which shows main body of the second implementation example. 
         FIG. 10  refers to disassembly perspective view which shows the second implementation example. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Explanation of squeezing gun for two-part medical viscous fluid according to this invention referring to  FIG. 1  and  FIG. 10  is as follows. 
     This invention is to squeeze viscous fluid contained in double cartridge with the power of driving motor  10  by installing driving motor  10  on squeezing gun  1  which has the shape of pistol where double cartridge  40  is installed in removable mode. 
     Forward area of double cartridge  40  mentioned above is equipped with stout divider  43  and a pair of tubes  42  whose rear side is open is combined in one body and at the rear side of double cartridge where a pair of tubes are combined in one body, flange part  41  that is designed to install double cartridge  40  at the forward area of squeezing gun  1  in removable mode is formed protruded outward and in each tube  42  mentioned above, different kinds of viscous fluid is filled. 
     As shown in  FIG. 1  and  FIG. 3 , case main body  2  whose forward are is open is installed on the upper side of handle  3  where push button is installed and cartridge insertion part  6  equipped with flange hanging hole  5  where flange part  41  of double cartridge  40  is inserted and hung is formed and a pair of horizontal scroll bars  15  that move forward horizontally by pressing push button  4  is installed inside of case main body  2 . 
     Driving motor  10  equipped with decelerator  11  is installed inside of case main body  2  and driving gear  12  is installed in the axis of rotation of decelerator  11  and power delivery means  30  that deliver turning force of decelerator  11  to horizontal scroll bars of both sides  15  and make horizontal scroll bars move horizontally is installed between driving gear  12  and horizontal scroll bar  15 . 
     Screw thread  34  is formed throughout the length of horizontal scroll bar  15  of power delivery means  30  and this screw thread  34  can be formed with screw bar shape but in the case of first implementation example of this invention, it is desirable that rack gear is formed throughout the lower length of horizontal scroll bar  15 . 
     Intermediary gear  32  which engages driving gear  12  in the axis of rotation  31  which is installed freely and final gear  13  which engages screw thread  34  of horizontal scroll bar of both side  15  are installed inside of case main body  2  respectively. 
     Upper forward area of case main  2  is installed open so that cover  7  can be opened and closed and at the lower side of this cover  7 , hanging part  44  that makes flange part  41  of double cartridge  40  is inserted and hung is formed when cover  7  is closed, and guide  33  that directs smooth horizontal movement of horizontal scroll bar  15  inside of case main body  2  of both sides. 
     The following is about the second implementation example referring to  FIG. 4  and  FIG. 10  and in the case of the second implementation example, the way of squeezing viscous fluid contained in double cartridge  40  from squeezing gun  1  by the power of driving motor  10  equipped with double cartridge  40  is the same as that of the first implementation example. 
     With regard to squeezing gun  1  in the second implementation example, as shown in  FIG. 4 , case main body  2  whose forward area is open is installed on the upper side of handle  3  where push button  4  is set up and cartridge insertion part  6  equipped with flange hanging hole  5  where flange part  41  of double cartridge  40  is inserted and hung is formed at the open forward area of case main body  2  and a pair of horizontal scroll bars that move forward horizontally by pressing push button  4  is installed. 
     Driving motor  10  equipped with decelerator  11  is installed in the case main body  2  and driving gear  12  is installed in the axis of rotation of decelerator  11  and power delivery means  30  that enable horizontal scroll bars  15  to move horizontally by delivering the turning force of decelerator  11  to horizontal scroll bars  15  of both sides is installed between driving gear  12  and horizontal scroll bars ( 15 ). 
     As shown in  FIG. 5  and  FIG. 6 , with regard to power delivery means  30 , screw thread  34  is formed throughout all outer circumferential edges of horizontal scroll bar  15  and key way  16  is formed throughout the length of horizontal scroll bar  15  in transverse direction. 
     A pair of horizontal scroll bars  15  pass through case main body  2  and housing  20  which driving gear  12  is exposed forward is installed and gear rotation body  36  which engages driving gear  12  is installed at both sides of housing  20  mentioned above and this gear body of rotation  36  is installed so that it can be moved straight by being inserted outside of horizontal scroll bar  15 . 
     With regard to gear rotation body  36 , protruded key  14  that is directed by being inserted into key way  16  of horizontal scroll bar  15  is formed in the tube type main body  35  and final gear  13  which engages driving gear  12  is formed at the center of circumference of tube type main body  35  is formed and outside of forward and backward of tube type main body  35  is inserted into the bearing  37  which is installed in housing  20  and consequently rotation is supported. 
     As shown in  FIGS. 5 ,  7  and  8 , clutch  17  that makes horizontal scroll bar  15  of both sides move backward by spring  26  and makes horizontal scroll bar  15  moves horizontally in screw mode is installed on the horizontal scroll bar  15  of both sides in housing  20 . 
     The clutches mentioned above are made up of a pair of clutch on left side and on the right side and screw way  17   a  that corresponds to screw thread  34  of horizontal scroll bar  15  is formed inside and slope part  18  is formed outside so that device can be pursed inward by being inserted into clutch purse part  8  and spring  19  that makes pursed a pair of clutches  17  stretched out is installed between a pair of clutches  17 . 
     Cover  7  that covers the upper open side of housing  20  is installed on the upper forward open side of housing  20  by hinge pin  7   a  and clutch purse part  8  that makes a pair of clutches  17  pursed inward by being inserted outside of slope part  18  of clutches  17  of both sides when closing cover ( 7 ) is formed inside with             shape.
     As shown in  FIGS. 5 and 9 , horizontal scroll bars  15  are protruded backward through holes  22  that are formed on the rear wall  21  of housing  20  and rear edge of horizontal scroll bars  15  of both sides that are protruded backward are installed so that it can be supported by bracket  23  and spring  26  that makes horizontal scroll bar  15  move backward is installed between rear wall  21  and bracket  23 . 
     At this time, holes  24  are formed at the center of bracket  23  mentioned above and guide pin  25  penetrates holes  24  and the front edge of guide pin  25  supports the rear side of center of rear wall  21  and spring  26  mentioned above is installed elastically between rear wall  21  and bracket  23  while inserted into guide pin  25 . 
     Decelerator  11  mentioned above is designed to decelerate the rotation of driving motor  10  and decelerator which uses super gear or decelerator which uses worm gear and as shown in  FIG. 10 , this invention has installed epicyclical gear as decelerator. 
     Supplying power to driving motor  10  can be possible by installing battery  45  in the handle  3  with removable mode and operating driving motor  10  with power supply of battery  45  and it is desirable that this battery  45  is charged by using additional charger. 
     Though I have not shown the example in a drawing, horizontal scroll bars of both sides of squeezing gun can be installed so that they can be moved forward and backward by using air pressure cylinder. 
     Interaction of this invention which is composed mentioned above can be explained as follows referring to  FIGS. 1 and 10 . 
     In the first implementation example shown  FIGS. 1 and 3 , after cartridge insertion part  6  is exposed to the forward area of case main body  2  by opening the cover  7  of squeezing gun  1 , if flange part  41  of rear edge of double cartridge  40  inserts flange hanging way  5  and closes cover  7 , rear flange part  41  of double cartridge  40  is inserted into flange hanging way  5  of cartridge insertion part  6  and double cartridge  40  can be installed in the forward area of case main body  40  as the upper side of flange part  41  is fixed in hanging part  44  that is formed to be cut downward on the bottom side of edge of cover  7 . 
     In this state, in the case user intends to squeeze viscous fluid contained in double cartridge  40 , user should turn switch of control part  46  on and press optional switch that chooses rotation speed of driving motor  10  and press push button  4  which is installed at the forward area of handle  4  and make driving motor  10  run. 
     In this case, push button  4  is equipped with switch that driving motor  10  can choose rotation in correct and reverse direction and user should press push button  4  so that horizontal scroll bar  15  can be moved forward when squeezing viscous fluid. 
     When driving motor  10  rotates in the direction that horizontal scroll bar  15  can be moved forward, rotation of driving motor  10  decelerates in decelerator which is installed at the forward area of driving motor  10  and by the turning force decelerated mentioned above, driving gear  12  that is installed on rotation axis of decelerator  11  becomes rotated. 
     If driving gear  12  rotates, intermediary gear  32  which engages driving gear  12  rotates, as final gear  13  which engages screw thread  34  which is formed with the form of rack gear at the lower side of horizontal scroll bar is installed on both sides of rotation axis  31  where intermediary gear  32 , final gears  13  of both sides rotate by turning force of driving gear  12  mentioned above. 
     At this time, as driving gear  12  of both sides engage screw thread  34  of horizontal scroll bar  15  as mentioned above, horizontal scroll bars  15  of both sides move forward and front edge of each horizontal scroll bar  15  is inserted into tube of double cartridge  40  and different kinds of viscous fluid that is filled in tube of both sides is squeezed through holes  43  that are formed at the front edge of tubes of both sides. 
     Two kinds of viscous fluid that is squeezed from two tubes are blended in mixed delivery branch which is installed at the forward area of delivery branch which is formed at the front edge of two tubes and squeeze viscous fluid at the place that is targeted. 
     In the case viscous fluid mentioned above is used for dental impression material, hardening begins from the time two kinds of viscous fluid which is squeezed from damaged tooth from dental patient are blended in mixture delivery branch and while hardening for some time and shape that is intended to install dental prosthesis for damaged tooth is molded. 
     While viscous fluid which is contained in tubes of both sides is squeezed, push button  4  continues to be pressed and after viscous fluid is squeezed, stop the rotation of driving motor  10  by discontinuing pressing push button  4 . 
     If push button  4  that is intended to rotate driving motor  10  in reverse direction is pressed, horizontal scroll bars  15  of both sides which have been inserted in tubes of double cartridge  40  get out. 
     After horizontal scroll bars  15  of both sides get out of tube of double cartridge, hitching of hanging part  44  which is applied to flange part  41  of double cartridge  40  is removed, and double cartridge  40  detaches from cartridge insertion part  6  of squeezing gun  1  by raising rear side of flange part  41  of double cartridge  40  from flange hanging way  5  of cartridge insertion part  6 . 
     When double cartridge  40  is detached from squeezing gun  1 , application medication work of viscous fluid using squeezing gun  1  of this invention is completed. This invention enables viscous fluid squeezed easily as viscous fluid which is contained in double cartridge  40  is squeezed by driving force of driving motor  10 . 
     The following is explanation about squeezing viscous fluid by using the second implementation example shown in  FIGS. 4 and 10 , the way that is used in the second implementation example is the same as that of the first implementation example in this case. When double cartridge  40  is installed in squeezing gun  1 , double cartridge  40  is installed in cartridge insertion part  6  by opening cover  7  and than closing cover  7 . After turning power switch that is installed on control part  46  on, user chooses rotation speed of driving motor  10  by optional switch  47 . 
     When closing cover  7  after installing double cartridge into cartridge insertion part  6 , as shown in  FIGS. 4 ,  7  and  8 , clutches of both sides  17  are pursed inside by slope part  18  while open entrance of clutch purse part  8  which is formed with             shape on cover  7  is inserted outside of slope side  18  of clutch  17 .
     As clutches  17  of both sides are pursed, screw way  17   a  which is formed in clutch  17  and screw thread  34  which is formed in circumference of horizontal scroll bar  15  engage each other. 
     At this state, if push button  4  is pressed, driving motor  10  is operated and driving gear  12  which is installed on the rotation axis of decelerator  11  rotates by turning force which decelerates with decelerator  11 . 
     If driving gear  12  rotates, final gear  13  which engages driving gear rotates as shown in  FIG. 6 . Because final gear  13  is formed in a body outside of tube type main body  35  inserted outside of horizontal scroll bar  15  and protruded key which is formed in the tube type main body  35  is inserted in key way  16  which is formed throughout the length of horizontal scroll bar  15 , horizontal scroll bar  15  rotates as final gear  13  rotates. 
     While horizontal scroll bar  15  rotates, because screw way  17   a  of clutch  17  whose location is installed fixed in housing  20  engages screw thread  34  of horizontal scroll bar  15  as shown in  FIGS. 5 and 7 , horizontal scroll bars of both sides  15  move forward while rotating in screw mode. 
     The reason final gear rotates at the same place and horizontal scroll bar which is installed in tube type main body of final gear  13  can move forward while rotating with final gear  13  is that protruded key  14  which is pressed out inside of tube type main body  35  is directed to key way  16  that is formed throughout the length of horizontal scroll bar  15 . 
     As pushing plate  15   a  that pushes viscous fluid by being inserted in tubes  42  of double cartridge  40  is installed at the front edge of horizontal scroll bar  15 , horizontal scroll bar  15  moves forward while rotating and on the other hand pushing plate  15   a  does not rotate and it is inserted into tube  42  and consequently, different kinds of viscous fluid is squeezed through delivery branch  43  which is formed at the front edge of both tubes. 
     Squeezing two kinds of viscous fluid which is squeezed from two tubes at the targeted place and molding the form that is intended to install dental prosthesis hardening as time passes in the case that viscous fluid is used for dental impression material is similar to the explanation in the first implementation example. 
     While viscous fluid is squeezed which is contained in tubes of both sides, push button  4  continues to be pressed and after viscous fluid is squeezed, a user should stop rotation of driving motor  10  by discontinuing the pressing push button  4 . 
     After squeezing of viscous fluid is finished, in order to detach double cartridge  40  from squeezing gun  1 , when a user opens cover  7  that is installed on the upper side of case main body  2 , as shown in  FIGS. 5 ,  7  and  8 , clutch purse part  80  which is formed with             shape at the lower side of cover  7  is raised toward the upper side.
     Clutch purse part  8  which is raised toward the upper side is originally inserted outside of slope part  18  in clip mode and as cover  7  opens, clutch purse part goes upward and clutch purse part  8  is detached from the outside of clutch  17 . 
     If clutch purse part  8  which is formed with             shape is detached from outside of clutch  17 , interconnection between screw way  17   a  and screw thread  34  which is formed in clutch is removed as both clutches  17  are stretched out by elasticity.
     Removing interconnection between screw way  17   a  which is formed in clutch  17  and screw thread  34  which is formed around circumference of horizontal scroll bar  15  means that holding horizontal scroll bar as clutch  17  is removed. At this time, as shown FIGS. in  5  and  9 , spring is installed between rear wall  21  of housing  20  and bracket  23  which is installed at the rear edge of horizontal scroll bar  15  of both sides and by the elasticity of the spring, bracket  23  is moved backward. 
     As rear edge of horizontal scroll bar  15  of both sides is connected and installed in the bracket  23 , when opening cover  7 , holding state about horizontal scroll bar  15  is removed and this free state horizontal scroll bar  15  moves backward promptly by elasticity of spring  26 . 
     Front edge of the spring  26  mentioned above is supported on the rear wall  21  of housing  20  and rear edge of the spring is inserted in guide pin  25  that penetrates the holes  24  of bracket  23  and enables horizontal scroll bar  15  of both sides to move backward smoothly. 
     After horizontal scroll bars  15  of both sides get out of tube  42  of double cartridge  40 , double cartridge  40  can be detached from cartridge insertion part  6  of squeezing gun  1  by raising upward rear side flange part  41  of double cartridge  40  from flange hanging way  5  of cartridge insertion part  6 . 
     As double cartridge  40  is detached from squeezing gun  1 , medication work of this invention using squeezing gun  1  is completed. This invention enables viscous fluid squeezed evenly easily as viscous fluid contained in double cartridge  40  is squeezed by driving force of driving motor  10 .