JP5989771B2 - Syringe pressure generation and pressure display device - Google Patents

Description

  The present invention relates to a pressure generation device and a pressure display device of a syringe, and more particularly, to easily generate pressure with a grip force of one hand in an injection operation in which a human tissue is extracted or a fat and a drug are injected through the syringe. The present invention relates to a pressure generation device and a pressure display device for a syringe that make it possible to easily recognize the magnitude of pressure.

  A syringe is a device that injects a medical solution into a body tissue, and has a configuration in which a tip is connected to a needle, a cylinder is connected to the tip, and a space is provided in the space of the cylinder. It is composed of a rod bar for injecting a drug through a needle by a positive pressure or a negative pressure generated by increasing the pressure in the space by being inserted and pulled out or pushed in, or for extracting a human body composition.

  Here, flanges project from the end of the cylinder and the end of the rod bar, respectively.

  When injecting drugs into the human body with a syringe configured in this way or extracting a human body composition, the needle is inserted into the human body while holding the cylinder and the rod bar with both hands. A negative pressure is generated by the action of pulling out the back to extract the organization of the human body, or a positive pressure is generated by the action of pushing the rod bar forward to inject the drug into the human body.

  However, at the time of drug injection by a conventional syringe or extraction of human tissue, one hand usually rubs the injection target site and corrects the posture of the injection target so that the injection or extraction is easy. Used to move the syringe rod bar forward or backward with the other hand.

  At this time, the injection operation of the syringe with one hand is advanced or backward with the finger holding the flange of the cylinder and the rod bar, but the injection operation cannot be performed reliably, and there is a possibility that the injection operation may be mistaken. .

  When injecting a large amount of drug into a human body or injecting a viscous drug with a large-capacity syringe, there is a problem that the tip fitted in the cylinder is separated when the positive pressure in the syringe space increases.

  In fat transplantation for correcting body shape, when extracting highly viscous human body fat, if the negative pressure in the syringe space becomes high, it is difficult to perform the operation of pulling out the rod bar with one hand.

  During the fat inhalation procedure, after inserting the needle into the human body, pull the rod bar attached with the piston backward from the syringe to generate negative pressure inside the syringe and inhale the fat through the needle into the space of the syringe become. At this time, if the tip of the needle is exposed to air due to an operator's mistake, the negative pressure inside the syringe disappears and fat is not further inhaled.

  In the process of injecting drugs into the human body, the practitioner must apply a constant force to generate positive pressure according to the different viscosities of the drug, but if the positive pressure is too high, There is a problem of damaging the organization around the injection site of the human body.

  After all, it is determined by the physical resistance felt by the practitioner's hand that the syringe stably generates positive or negative pressure, so that the extraction and injection procedures of fat and drug are precisely performed. There was a problem that it was difficult to do.

  An object of the present invention is to allow a human body composition to be easily extracted to the outside with a grip force of one hand using a syringe.

  Another object of the present invention is to be able to continuously generate a negative pressure while maintaining the pressure state even during the generation of the negative pressure.

  Another object of the present invention is to make it possible to release the negative pressure by a simple mechanical operation.

  Another object of the present invention is to enable a negative pressure or a positive pressure to be selectively generated in a syringe.

  Another object of the present invention is to make it possible to visually confirm the pressure state of the internal space of a syringe during a procedure for injecting fat and drugs through a syringe or extracting a human body tissue. .

  In particular, an object of the present invention is to enable a surgeon to visually confirm a change in negative pressure or positive pressure on the scale so that the operator can visually recognize a more precise change. Is to make it.

  An object of the present invention is to prevent pressure overload by generating pressure by an indirect transmission method to compensate for pressure overload in a conventional manual syringe or simple booster syringe. is there.

  In order to achieve the above-mentioned object, the pressure generation and pressure display device of the syringe according to the present invention includes a distal end portion to which a needle is coupled, a distal end portion coupled to the distal end portion, and a space inside, and an open end portion of the space. The cylinder is formed with a cylinder flange, and the rod bar connected to the piston in the space is pushed or pulled out with a finger, and the pressure in the space is changed by the piston interlocking with the needle by the positive pressure or negative pressure In a syringe comprising pressure means for injecting or extracting a drug through, an auxiliary device is detachably coupled to the cylinder flange so that the rod bar penetrates the auxiliary device, and is arranged parallel to the syringe to the auxiliary device If the lever connected in this way rotates by the lever principle with the gripping force of the hand, it is converted into linear motion by the motion conversion means Is configured as a rod bar and the piston is moved by the force.

  According to the present invention, the auxiliary device includes a main block fixed to the cylinder flange and arranged in a straight line with the cylinder, and the main block is formed with a movable space and a fixed space having an opening at the bottom, and the rod bar A movable block and a fixed block each having a through-hole are disposed so as to pass through, and the movable block and the fixed block are urged in one direction in the movable space and the fixed space by an elastic member, in front of the main block. The pressure projection formed on the other end of the lever is moved backward by changing the inclination by rotating the hinge-connected lever, and the upper and lower edges of the inner peripheral surface of the through hole are lowered to the bottom of the rod bar. If negative pressure is generated by moving the rod bar to the back of the cylinder while pressing the outer peripheral surface, and the grip force is released, With bar returns to the original state by the loaded spring in the hinge connection portion, maintains the upright movable block relative to the rod bar by an elastic member configured to prepare the next forward movement.

  According to the present invention, a guide block through which the rod bar passes is coupled to the space inlet of the cylinder so as to support the movement of the rod bar.

  According to the present invention, the main block is provided with a fixing clip having a fixing rib formed in front thereof, and the cylinder flange is detachably coupled to the fixing rib by rotation.

According to the present invention, the fixed block is installed in a fixed space, is installed so that a lower part of the fixed block is partially exposed, is penetrated by the rod bar, and the fixed block is installed so as to be inclined by an elastic member. When the upper and lower parts of the inner peripheral surface of the through hole press the outer peripheral surface of the rod bar downward, the rod bar moved by the movable block is fixed so as not to move due to negative pressure, and when the rod bar is released from the fixed state, By pulling the lower part of the fixed block to change the state to be upright with respect to the rod bar, the through hole of the fixed block is configured to release the compressed state of the outer peripheral surface of the rod bar.

  According to the present invention, the motion conversion means is configured such that the pinion gear is rotatably installed on the auxiliary device via the central axis so as to mesh with the rack gear formed in the longitudinal direction at one end of the rod bar. An inscribed gear with an inclination angle in only one direction is installed inside, and a latch gear that elastically meshes with the inscribed gear by a spring installed in a rotating tool fixed to the lever rotates the pinion only in one direction. In this manner, the rotational force is transmitted to the internal gear.

  According to the present invention, an auxiliary latch gear is hingedly connected to the rear of the auxiliary device, and one end is elastically positioned upward by a spring so that the movement of the rod bar is controlled by the negative pressure generated by the syringe. Composed.

  According to the present invention, by passing through the elastic member during the process of transmitting the gripping force to the piston, the amount of change in the shape of the elastic member pulled by the transmitted pressure changes, and the shape of the elastic member It is configured to visually recognize the magnitude of pressure from the outside by measuring the amount of change.

  According to the present invention, the amount of change in the shape in which the elastic member is compressed according to the magnitude of the transmitted pressure by compressing the elastic member coupled to the rod bar during the process of transmitting the gripping force to the piston. And the magnitude of the pressure is visually recognized from the outside by measuring the amount of change in shape of the elastic member.

  According to the present invention, the piston includes a first piston and a second piston having a double structure, which are coupled to a space, and a confirmation member is formed on one side of the first piston. A recess for accommodating the member is formed, the elastic member is interposed between the confirmation member of the first piston and the recess of the second piston, and the first piston is moved by the elastic member interlocking with the rod bar and the second piston. Negative pressure or positive pressure is selectively generated in the space, and the negative pressure generated in the space by the unit scale displayed on the outer peripheral surface of the confirmation member, that is, by the length of the variable shape due to the elasticity of the elastic member itself Or it is comprised so that the grade of a positive pressure can be confirmed.

  According to the present invention, it includes a rod bar, a housing slidably coupled to the outer peripheral surface of the rod bar, and a cover fixed to one end of the housing, and a button is fixed to one end of the rod bar. Is partly housed inside the cover, an elastic member is mounted inside the cover, and if the housing is moved by the lever, the elastic member is compressed. When the compression force of the elastic member is equal to or greater than the pressure in the cylinder space, the button By moving the rod bar indirectly by moving the rod indirectly, the piston moves inside the space to generate negative pressure, and the unit scale is displayed on the outer peripheral surface of the button and the rod bar so that the elasticity By allowing the length of the variable shape due to the elasticity of the member to be confirmed, negative or positive pressure generated in the space Configured to accurately grasp the degree.

  According to the present invention, the elastic member is made of rubber or a spring.

  As described above, the pressure generation and pressure display device of the syringe of the present invention moves the rod bar stepwise in one direction by the movable block that is mounted so as to extend from the cylinder and interlocks with the lever that rotates by the gripping force of one hand. Thus, there is an effect that the human body work can be easily extracted to the outside even with the gripping force of one hand through the syringe.

  In addition, the pressure generation and pressure display device of the syringe of the present invention is installed in a main block that is mounted so as to extend from the cylinder when the rod bar is moved stepwise in conjunction with the rotation of the lever by repetitive movement of one hand. The fixed block prevents the rod bar from moving in the opposite direction due to negative pressure, so that negative pressure can be continuously generated while maintaining a constant pressure state even during negative pressure generation. Thus, there is an effect of improving the efficiency of extracting the human body work.

  In addition, the pressure generation and pressure display device of the syringe of the present invention can release the fixed state of the rod bar by changing the inclination of the fixed block that is attached to the main block and serves to maintain the negative pressure state. By making it easy to release the negative pressure state of the cylinder space by simply changing the inclination of the fixed block, the operability of the pressure generation auxiliary device is improved and the negative pressure and the positive pressure are selectively selected. There is an effect that can be generated.

  In addition, the pressure generation and pressure display device of the syringe according to the present invention is as follows: a) In order to compensate for the problem of pressure overload in the conventional manual syringe or the simple booster syringe, The first piston and the second piston are coupled to each other, an elastic member is coupled between the first and second pistons, and the second piston is moved by a rod bar connected to the second piston and extending outside the cylinder space. The negative piston or the positive pressure is generated inside the space by interlocking the first piston with the pressure of the elastic space, or a) The housing is slidably coupled to the end of the rod bar exposed to the outside of the cylinder, The rod bar and each button fixed to the end of the housing are connected to the cover, and an elastic member is arranged inside the cover, so that the housing of the lever is The movement is sequentially transmitted to the button through the cover and the elastic member, and the negative bar or the positive pressure is generated by interlocking the piston with the rod bar fixed to the button. It is possible to prevent overload of the pressure by generating the pressure and minimize the error of the injection treatment.

  The pressure generation and pressure display device of the syringe according to the present invention displays a unit scale on a confirmation member installed on the first piston when the negative pressure or the positive pressure is generated by the syringe, and the elastic member itself is elastic. It is possible to check the state of the shape change due to the naked eye and also to check the pressure change by the unit scale so that the magnitude of the pressure generated in the current syringe space can be grasped in detail. It is possible to perform precise injection treatment for fat and drug injection or extraction of human body tissue.

  In addition, the pressure generation and pressure display device of the syringe of the present invention is a pressure display device comprising a rod bar, a housing, a cover, and a button. By displaying a unit scale on the rod bar and the button, the pressure change state from the outside of the syringe This makes it possible to check the pressure more easily and improve the pressure visibility.

The perspective view which shows the state which mounted | wore the cylinder with the auxiliary | assistant apparatus in 1st Example. 1 is an exploded perspective view of the cylinder auxiliary and auxiliary device of FIG. Sectional drawing which shows the operation state according to step of the auxiliary | assistant apparatus of 1st Example shown in FIG. Sectional drawing which shows the operation state according to step of the auxiliary | assistant apparatus of 1st Example shown in FIG. Sectional drawing which shows the operation state according to step of the auxiliary | assistant apparatus of 1st Example shown in FIG. Sectional drawing which shows the operation state according to step of the auxiliary | assistant apparatus of 1st Example shown in FIG. Sectional drawing which shows the operation state according to step of the auxiliary | assistant apparatus of 1st Example shown in FIG. Sectional drawing explaining the action | operation state of the motion conversion means of 2nd Example Sectional drawing explaining the action | operation state of the motion conversion means of 2nd Example Sectional drawing explaining the action | operation state of the motion conversion means of 2nd Example Sectional drawing which shows the state which mounted | wore with the display apparatus to the projectile pressure generator of 3rd Example Sectional drawing which shows the state which mounted | wore with the display apparatus to the projectile pressure generator of 3rd Example Sectional drawing which shows the state which mounted | wore with the display apparatus to the gun | jumper pressure generator of 4th Example FIG. 13 is an exploded sectional view of the embodiment of FIG. Sectional drawing which shows the state which mounted | wore the syringe pressure generation apparatus of 2nd Example with the display apparatus of 4th Example. Sectional drawing which shows the state which mounted | wore the syringe pressure generation apparatus of 2nd Example with the display apparatus of 3rd Example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  First, in the drawings, the same components or parts are denoted by the same reference numerals as much as possible. In the description of the present invention, specific descriptions of related known functions or configurations are omitted so as not to obscure the subject matter of the present invention.

  1 is a perspective view showing a state where the auxiliary device of the present invention is mounted on a cylinder, FIG. 2 is an exploded perspective view showing a state where the auxiliary device of the present invention is mounted on a cylinder, and FIGS. FIG. 8 to FIG. 10 are operational flow charts showing other embodiments of the motion converting means of the present invention, and FIGS. 11 and 12 show the syringe pressure generating apparatus of the present invention. FIG. 13 to FIG. 16 are cross-sectional views showing a state in which the display device of another embodiment is attached to the syringe pressure generating device of the present invention.

  First, as shown in FIGS. 1 to 7, the syringe to which the pressure generation and pressure display device of the syringe of the present invention is applied is configured as follows.

  The syringe 100 includes a distal end portion 110 to which a needle 111 is coupled, a cylinder 120 coupled to the distal end portion 110, including a space 121 therein, and a cylinder flange 122 formed at an open end portion of the space 121; The rod 131 connected to the piston 131 coupled to the space 121 is pushed or pulled out with a finger, and the drug is injected through the needle by the positive pressure or the negative pressure generated by changing the pressure of the space 121 by the interlocking piston 131. Then, the pressure means 130 for extracting is included.

  The tip 110 can be attached to and detached from the cylinder 120, and a protrusion (no symbol) is formed at the opposite end of the tip 110 to which the needle 111 is attached.

  As shown in FIG. 2, the cylinder 120 has a cylindrical shape, and a pressure means 130 including a piston 131 connected to a rod bar 133 is attached to a space 121 (see FIG. 5) of the cylinder 120. A negative pressure or a positive pressure is generated in the space 121 depending on the moving direction.

  The negative pressure is generated in the space 121 by pulling the piston 131 to the rear of the cylinder 120 via the rod bar 133, and is used when extracting the liquid composition of the human body into the space 121 through the needle 111 inserted into the human body.

  On the other hand, the positive pressure is generated by pushing the piston 131 forward of the cylinder 120 through the rod bar 133, and when the liquid drug filled in the space 121 is injected into the human body through the needle 111 inserted into the human body. Used for.

  An auxiliary device 200 detachably attached to the cylinder flange 122 is coupled to the syringe 100 configured as described above so that the rod bar 133 penetrates the auxiliary device 200, and the auxiliary device 200 is parallel to the syringe. The rotational force generated on the lever principle, which is hinge-connected by the gripping force of the hand, is converted into a linear motion by the motion converting means 220, and the rod bar 133 and the piston 131 are moved at a low speed by the increased force.

  The auxiliary device 200 includes a main block 210 coupled to the rod bar 133 so as to pass therethrough and fixed to the cylinder flange 122.

  The main block 210 is fixed to the cylinder flange 122 of the cylinder 120 so that the main block 210 extends in a straight line by a fixing clip 215 having a fixing rib 216 formed on the front thereof and coupled to the cylinder flange 122 by rotation. Then, the rod bar 133 exposed from the cylinder 120 passes through the main block 210 (see FIG. 3).

  As shown in FIG. 3, the rod bar 133 is screwed into the piston 131, and a guide block 250 through which the rod bar 133 penetrates is coupled to the inlet of the space 121 of the cylinder 120, and the guide block 250 penetrates the fixing clip 215. By being fixed to the main block 210 side, the guide block 250 supports the movement of the rod bar 133.

  The main block 210 coupled to the cylinder 120 is configured as follows.

  The main block 210 is provided with motion conversion means 220.

  The motion converting means 220 has a movable space 211 and a fixed space 212 each having an open bottom, and the movable block 221 and the fixed block 222 are installed in the movable space 211 and the fixed space 212, respectively.

  Here, through holes 213 are formed in the movable block 221 and the fixed block 222, respectively, and the rod bar 133 penetrates and is coupled thereto.

  As described above, the movable block 221 and the fixed block 222 are spaced apart from the main block 210. At this time, after passing the rod bar 133, the movable block 221 and the fixed block 222 are brought into close contact with the elastic block 150 in one direction of the main block 210.

  A lever 240 with a spring 241 that is hinged in parallel with the cylinder 120 is attached to the front lower portion of the main block 210, and the pressure protrusion 242 that protrudes on one side of the lever 240 is located in front of the movable block 221. Located at the bottom.

  Here, the moving or fixed state of the rod bar 133 is determined by the upright or inclined direction of the movable block 221 and the fixed block 222.

  That is, as shown in FIG. 3, first, the movable block 221 maintains an upright state with respect to the rod bar 133, and the fixed block 222 is disposed with its upper portion inclined toward the end of the rod bar 133.

  Thereafter, as shown in FIGS. 4 and 5, the pressure protrusion 242 pushes the lower portion of the movable block 221 to change the inclination by the rotation of the lever 240, and the upper and lower edges of the inner peripheral surface of the through hole 213 are changed. The rod bar is moved backward while the outer peripheral surface of the rod bar 133 is pressed downward, and negative pressure is generated in the space 121 of the cylinder 120.

  Next, when the gripping force applied to the lever 240 is released, the lever 240 returns to the original state shown in FIG. 6 and the movable block 221 is maintained upright with respect to the rod bar 133 by the elastic member 150, and the next forward movement is performed. prepare.

  At this time, the fixed block 222 is installed to be inclined by the elastic member 150, and the upper and lower sides of the inner peripheral surface of the through-hole 213 press the outer peripheral surface of the rod bar 133 downward, whereby the rod bar 133 moved by the movable block 221. It is fixed so that it does not move due to negative pressure.

  Accordingly, when the lever 240 prepares for the next forward movement of the movable block 221, the rod bar 133 is prevented from floating due to negative pressure.

  By the above-described method, the rod bar 133 is moved stepwise in one direction as shown in FIGS. 3 to 6 by the movable block 221 extending to the cylinder 120 and interlocking with the lever 240 rotated by the gripping force of one hand. Thus, the human body organization can be easily extracted to the outside through the syringe 100 even with the gripping force of one hand.

  In addition, the fixed block 222 mounted on the main block 210 and changing the inclination of the fixed block 222 serving to maintain the negative pressure state can be released from the fixed state with the rod bar 133, thereby By simply changing the inclination, the negative pressure state of the space 121 of the cylinder 120 can be easily released, and the operability of the pressure generation assisting device can be improved by generating a positive pressure. .

  8 to 10 show another embodiment of the pressure generator for a syringe according to the present invention.

  The motion converting means 220 is engaged with a rack gear 133 a formed in the longitudinal direction on one side of the rod bar 133, with a pinion gear 260 rotatably installed on the auxiliary device 200 via a central shaft 262.

  An internal gear 261 having an inclination angle in only one direction is provided inside the pinion gear 260, and elastically meshes with the internal gear 261 by a spring 281 installed on a rotating tool fixed to the lever. The latch gear 280 transmits the rotational force to the internal gear 261 so that the pinion gear 260 rotates only in one direction by the lever 240.

  In other words, as shown in FIG. 9, when the lever 240 is rotated by the lever principle with the gripping force of the hand, the rotating tool 270 is interlocked about the central axis 262 installed in the auxiliary device 200.

  At least one recess is formed on the outer peripheral surface of the rotating tool 270. A latch gear 280 is hingedly connected to the inside of the recess, and one end of the latch gear 280 is elastically biased outward by a spring 281. Installed.

  Since the inscribed gear 261 and the latch gear 280 are formed to mesh with each other at an angle in one direction, the pinion gear 260 is rotated only in one direction by the latch gear 280, and the rack gear 133a is rotated by the rotation of the pinion gear 260. By moving linearly backward, the piston is interlocked inside the space so that negative pressure is generated.

  As shown in FIG. 10, an auxiliary latch gear 290 is hingedly connected to the rear of the auxiliary device, and one end is elastically biased upward by a spring 281 so that the rod bar 133 moves due to negative pressure generated by the syringe. Thus, the rod bar 133 is prevented from being restored to the original position by the negative pressure.

  In the embodiment shown in FIGS. 11 and 12, the pressure generating device of the syringe is further provided with a pressure display device.

  The pressure display device passes through the elastic member 150 in the process of transmitting the gripping force to the piston 131, and changes the tensile change amount of the elastic member 150 according to the magnitude of the transmitted pressure. By measuring the amount of change in shape of the member 150, the magnitude of the pressure is visually recognized from the outside.

  For this purpose, the piston 131 has a double-structured first piston 131a and a second piston 131b coupled to the space, and a confirmation member 132 is formed on one side of the first piston 131a. A recess 134 for accommodating the confirmation member 132 is formed.

  The elastic member 150 is interposed between the confirmation member 132 of the first piston 131a and the recess 134 of the second piston 131b, so that the elastic member 150 interlocked with the rod bar 133 and the second piston 131b causes the first piston. 131a is moved to selectively generate negative pressure or positive pressure in the space.

  Accordingly, the magnitude of the negative pressure or the positive pressure is confirmed by the unit scale 135 displayed on the outer peripheral surface of the confirmation member 132 or the shape change amount of the elastic member, that is, by the tension and compression state due to the elasticity of the elastic member 150 itself. can do.

  That is, when extracting a human body composition such as fat through a syringe, the rod bar 133 is moved backward after the needle is inserted into a local part of the human body, and the first piston 131a and the second piston 131b are coupled. The first piston 131a is interlocked by the elastic force of the elastic member 150.

  If the first piston 131a and the second piston 131b move to the rear of the space 121, negative pressure is generated in the space 121 located in front of the first piston 131a, and the human body composition is extracted through the needle.

  Here, a negative pressure is generated when the elastic force of the elastic member 150 is not less than the pressure of the space 121.

  When the rod bar 133 is moved too quickly due to the operator's mistake and the negative pressure generated in the space 121 is higher than the tensile force of the elastic member 150, the elastic member 150 is subjected to a high tensile force, and the elastic member 150 is long. Lengthens.

  At this time, the practitioner can confirm the length of the pulled elastic member 150 with the naked eye from the scale 135 of the confirmation member 132 and confirm that the current pressure generation state is not normal.

  On the other hand, when positive pressure is generated, the second piston 131 is moved by moving the rod bar 133 forward after the needle is inserted into the human body in order to inject the fat and drug filled in the space 121 into the human body. The first piston 131a is moved forward while the elastic member 150 is compressed.

  When the first piston 131a moves forward, positive pressure is generated in the space filled with the drug, and fat and drug are injected into the human body.

  At this time, if the practitioner mistakenly increases the forward movement speed of the rod bar 133 and the positive pressure is excessively generated and the positive pressure becomes higher than the compression force of the elastic member 150 itself, the elasticity of the elastic member 150 increases the length. Becomes shorter.

  At this time, the practitioner can confirm the change in pressure by checking the amount of change in the shape of the compressed elastic member 150 or the scale 135 of the confirmation member 132 with the naked eye.

  In the other embodiment shown in FIG. 16, the pressure display device can be applied to the pressure generating device that generates pressure by the operation of the rack gear 133a and the pinion gear 260, and has the same effect as the pressure display device described above.

  The pressure display device of the pressure generator of the syringe in the other embodiment shown in FIGS. 13 and 14 is as follows.

  By compressing the elastic member 150 coupled to the rod bar 133 during the process of transmitting the grip force to the piston 131, the amount of change in the compression shape of the elastic member 150 is changed by the transmitted pressure, and the elasticity The configuration is such that the magnitude of the pressure can be visually recognized from the outside by measuring the shape change amount of the member 150.

  For this purpose, the syringe is provided with a rod bar 133, a housing 140, a cover 142 and a button 141.

  The housing 140 is slidably coupled to the outer peripheral surface of the rod bar 133.

  A cover 142 is fixed to one end of the housing 140, and a button 141 accommodated in the cover 142 is fixed to one end of the rod bar 133.

  When the elastic member 150 is mounted inside the cover 142 and the housing 140 is moved by the lever 240, the cover 142 is interlocked to pressurize the elastic member 150.

  At this time, if the compressive force of the elastic member 150 is equal to or greater than the pressure in the space 121 of the cylinder 120, the button 141 is pushed backward by the elastic force of the elastic member 150, and the rod 141 is fixed integrally with the button 141. The piston 131 is moved inside the space 121 to generate a negative pressure.

  Further, the unit scale 135 is displayed on the outer peripheral surface of the rod bar 133 and the button 141 in the vicinity where the piston 131 is mounted, so that the state of the shape change of the elastic member 150 due to its own elasticity can be confirmed with the naked eye. The pressure change state can be checked from the outside of the syringe more easily by enabling the pressure change to be confirmed on the unit scale 135 as well.

  As a result, the visibility of pressure can be improved and the magnitude of the pressure generated in the syringe space can be grasped in detail, so that it is possible to accurately perform fat and drug injection or human body tissue extraction. Injection treatment is possible.

  Further, as shown in FIG. 15, in the device for generating pressure by the structure of the rack gear 133a and the pinion gear 260 in the syringe, the rack gear 133a is shown at one end of the housing 140 formed on the outer peripheral surface as shown in FIGS. By installing the pressure display device in the same manner, the pressure change can be easily and accurately visually recognized from the shape change amount of the elastic member 150 and the numerical change amount of the unit scale as in FIGS. 13 and 14. .

  Here, the elastic member 150 is made of rubber or a spring, and any material having elasticity and a structure having elasticity can be applied because of the characteristics of the material.

100 Syringe 110 Tip portion 111 Needle 120 Cylinder 121 Space 122 Cylinder flange 130 Pressure means 131 Piston 131a First piston 131b Second piston 132 Confirming member 133 Rod bar 133a Rack gear 134 Recess 135 Scale 140 Housing 141 Button 142 Cover 150 Elastic member 200 Auxiliary device 210 block 211 movable space 212 fixed space 213 through hole 215 fixed clip 216 fixed rib 220 motion converting means 221 movable block 222 fixed block 240 lever 241 spring 242 pressure projection 250 guide block 260 pinion gear 261 internal gear 262 central shaft 270 rotation Tool 280 Latch gear 281 Spring 290 Auxiliary latch gear

Claims (8)

A distal end portion to which a needle is coupled; a cylinder coupled to the distal end portion; a cylinder having a space therein; and a cylinder flange formed at an open end portion of the space; and a rod bar coupled to a piston in the space. In a syringe consisting of a pressure means for injecting or extracting a drug through a needle with a positive pressure or a negative pressure by changing the pressure of the space with a piston linked to this by pushing or pulling it with a finger,
An auxiliary device is detachably coupled to the cylinder flange so that the rod bar penetrates the auxiliary device, and a lever that is arranged parallel to the syringe and hinged to the auxiliary device is rotated on the lever principle by the grip force of the hand. For example, it is converted into a linear motion by the motion converting means, and the rod bar and the piston are configured to move by the increased force ,
The auxiliary device includes a main block fixed to the cylinder flange and arranged in line with the cylinder,
In the main block, a movable space and a fixed space having an opening at the bottom are formed, and a movable block and a fixed block in which a through hole is formed so that the rod bar penetrates are arranged, respectively.
The movable block and the fixed block are urged in one direction by the elastic member in the movable space and the fixed space, and the pressure protrusion formed at the other end of the lever by the rotation of the lever hinged to the front of the main block Negatively by pushing the lower part of the movable block and moving backward while changing the tilt, moving the rod bar to the rear of the cylinder while pressing the outer peripheral surface of the rod bar downward on the inner and upper edges of the through hole. Pressure is generated,
When the gripping force is released, the lever is returned to its original state by the spring attached to the hinge connection part, and the movable block is kept upright with respect to the rod bar by the elastic member so that the next forward movement is prepared. Configured,
A guide block through which a rod bar penetrates is coupled to a space inlet of the cylinder, and is configured to support the movement of the rod bar,
The main block is provided with a fixing clip having a fixing rib formed on the front, and the cylinder flange is configured to be detachably coupled to the fixing rib by rotation. Pressure display device. The fixed block is installed in a fixed space, is installed so that a lower part of the fixed block is partially exposed, is penetrated by the rod bar, the fixed block is installed to be inclined by an elastic member, and the inner periphery of the through hole The upper side and the lower side press the outer peripheral surface of the rod bar downward, and the rod bar moved by the movable block is fixed so as not to move due to negative pressure.
When releasing the fixed state of the rod bar, the through hole of the fixed block is configured to release the compressed state of the outer peripheral surface of the rod bar by pulling the lower part of the fixed block and changing it to an upright state with respect to the rod bar. The pressure generation and pressure display device for a syringe according to claim 1, wherein   The motion converting means is configured such that a pinion gear is rotatably installed on the auxiliary device via a central axis so as to mesh with a rack gear formed in a longitudinal direction at one end of the rod bar, and only in one direction inside the pinion gear. An inscribed gear with an inclination angle is installed, and a latch gear that elastically meshes with the inscribed gear by a spring installed in a rotating tool fixed to the lever is inscribed so that the pinion rotates only in one direction by the lever. The pressure generation and pressure display device for a syringe according to claim 1, wherein the device is configured to transmit a rotational force to the syringe. An auxiliary latch gear is hingedly connected to the rear of the auxiliary device, and one end is elastically positioned upward by a spring, and the movement of the rod bar is controlled by the negative pressure generated by the syringe. The pressure generation and pressure display device for a syringe according to claim 3 .   By passing through the elastic member during the process of transmitting the gripping force to the piston, the amount of change in the shape of the elastic member that is pulled changes depending on the transmitted pressure. The pressure generation and pressure display device for a syringe according to claim 1, wherein the pressure generation device is configured to visually recognize the magnitude of the pressure.   By pressing the elastic member coupled to the rod bar during the process of transmitting the gripping force to the piston, the amount of change in the shape in which the elastic member is compressed changes depending on the magnitude of the transmitted pressure, 2. The pressure generation and pressure display device for a syringe according to claim 1, wherein the pressure is visually recognized from the outside by measuring the amount of change in shape of the elastic member. The piston includes a double-structured first piston and a second piston, which are coupled to a space, and a confirmation member is formed on one side of the first piston, and the second piston is a recess for receiving the confirmation member. The elastic member is interposed between the confirmation member of the first piston and the concave portion of the second piston, and the first piston is moved by the elastic member interlocked with the rod bar and the second piston, and negative pressure is applied to the space. Alternatively, a positive pressure is selectively generated, and the unit scale displayed on the outer peripheral surface of the confirmation member indicates the degree of the negative pressure or the positive pressure generated in the space due to the length of the shape changed by the elasticity of the elastic member itself. The pressure generation and pressure display device for a syringe according to claim 5 , wherein the pressure generation device and the pressure display device are configured to be able to confirm. A rod bar, a housing slidably coupled to the outer peripheral surface of the rod bar, and a cover fixed to one end of the housing. A button is fixed to one end of the rod bar, and the button is disposed inside the cover. If the elastic member is mounted inside the cover and the housing is moved by the lever, the elastic member is compressed, and when the compression force of the elastic member exceeds the pressure in the cylinder space, the button is indirectly moved backward. By linking the rod bar, the piston moves inside the space and generates negative pressure.
By displaying the unit scale on the outer peripheral surface of the button and rod bar, the length of the elastic member due to its own elasticity can be confirmed, so that negative pressure or positive pressure generated in the space can be confirmed. The syringe pressure generation and pressure display device according to claim 6 , wherein the pressure generation device is configured to accurately grasp the degree.

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