CN211675849U

CN211675849U - Manual injection booster

Info

Publication number: CN211675849U
Application number: CN202020152567.1U
Authority: CN
Inventors: 张同合; 孙传祝; 孙乐乐
Original assignee: Zibo Kechuang Medical Instrument Co ltd
Current assignee: Zibo Kechuang Medical Instrument Co ltd
Priority date: 2020-02-05
Filing date: 2020-02-05
Publication date: 2020-10-16
Anticipated expiration: 2030-02-05

Abstract

The utility model provides a manual injection boost motor, its characterized in that: the inner surfaces of the gun shell I and the gun shell II are provided with a pin shaft I, the inner cavity is provided with a support plate I, a support plate II, a sleeve I and a sleeve II, and an arc groove is arranged above the support plate I and the sleeve I; two sides of the trigger are provided with pin shafts II, two ends of the trigger shaft provided with the trigger are supported on the gun shell I and the gun shell II, one end of the spring is hung on the pin shaft I, the other end of the spring is hung on the pin shaft II, and the extending end of a boosting rod which penetrates through the supporting plate II and is sleeved with a clamping sleeve and a boosting sleeve is inserted into the sleeve I; two ends of a shifting fork shaft of which two ends are fixed with shifting forks are supported in the middle parts of a gun shell I and a gun shell II, a pin shaft III of a boosting sleeve is positioned in a U-shaped groove of the shifting fork, one end of a chain sheet is hinged in the middle part of the shifting fork, and the other end of the chain sheet is hinged at two ends of a chain pin; the two ends of the injection tube are arranged in the arc groove above the gun body through the clamps, one end of the plunger rod, which is provided with the plunger, is inserted into the injection tube, and the other end of the plunger rod is connected with the end part of the boosting rod through the transmission plate. The utility model has the advantages of convenient operation and easy and accurate control of the quantity of the injection liquid.

Description

Manual injection booster

Technical Field

The utility model provides a manual injection booster belongs to medical instrument and equipment field, and mainly used is to the boosting pressurization work when the internal injection liquid of patient, also can be used to work such as dispense before the infusion.

Background

When a lying-in woman is produced, in order to shorten the production process and reduce the pain of the lying-in woman, the disposable cervical dilatation balloon is generally placed in the uterus and the vagina of the lying-in woman, and then liquid is slowly injected into the disposable cervical dilatation balloon through the infusion tube to gradually expand the disposable cervical dilatation balloon, so that the effect of dilating the cervical orifice and the vagina is achieved, and the smooth production of a fetus is facilitated.

At present, most of common injection boosting instruments are plunger type injectors, injection and input of liquid are completed by manual pushing of nurses, labor intensity is high, and the quantity of the input liquid is not easy to control accurately. When the amount of the liquid which is input is too large, the pregnant woman can be more painful, otherwise, the function of expanding the cervical orifice and the vagina can not be achieved.

In view of the current situation of the medical apparatus industry, a manual injection booster which is convenient to operate and easy to control the quantity of injected liquid is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can overcome the problem that prior art and equipment exist, and operate labour saving and time saving, the easy accurate control's of injection liquid quantity manual injection boost motor.

The technical scheme is as follows: the boosting gun comprises a gun body and a boosting mechanism, wherein the gun body comprises a gun shell, a supporting plate and a sleeve; the gun shell is in a shape of a thin shell or a pistol with a hollow inner cavity, and comprises a gun shell I and a gun shell II which are symmetrical left and right; the whole gun shell is divided into a gun body in the middle, a gun barrel in the front, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the gun body, a bearing plate I is arranged in an inner cavity of a joint part of the gun barrel and the gun body, a round hole is formed in the bearing plate I, a bearing plate II is arranged in an inner cavity of the joint part of the tail part and the gun body, a round hole with the diameter equal to that of the round hole in the bearing plate I is formed in the bearing plate II; a sleeve I is arranged between the support plate I and the foremost end of the inner cavity of the gun barrel, a sleeve II is arranged between the support plate II and the rearmost end of the inner cavity of the tail part, and the axes of the sleeve I and the sleeve II are coaxial with the common axis of the round hole on the support plate I and the round hole on the support plate II; the outermost end of the tail part of the gun shell is provided with a round hole, the center of the round hole is positioned on the axis of the sleeve II, the diameter of the round hole is equal to that of an inner hole of the sleeve II, the inner surfaces of the gun body parts of the gun shell I and the gun shell II respectively extend 1 pin shaft I inwards, and 2 pin shafts I are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper part of the gun body, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail part of the gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I and the sleeve II; the boosting mechanism comprises a trigger, a spring, a clamping sleeve, a boosting rod, a shifting fork and a chain sheet, the trigger is in a diamond shape, the extending length of a water chestnut is longer, and two side surfaces of the water chestnut extending longer and vertical to the plane direction of the diamond are respectively in concave arc shapes and convex arc shapes; the middle part of the trigger is provided with a round hole with the axis vertical to the rhombus plane, the rhombus extending out of the opposite angle of the longer rhombus is also provided with a round hole, the axes of 2 round holes are parallel, one side of the middle part of the trigger, which is close to one end of the longer rhombus and is close to the convex cambered surface of the longer rhombus, extends 1 pin shaft II to the two sides along the direction vertical to the rhombus plane, 2 pin shafts II are coaxial, and the axis of the pin shaft II is parallel to the axis of the round hole in the middle part; the trigger is arranged in the middle of the trigger shaft through a circular hole in the middle, a chain pin is arranged in another circular hole of the trigger, two ends of the trigger shaft are respectively supported at the gun body parts of the gun shell I and the gun shell II close to the gun barrel, and when one end of the trigger extending out of the longer water caltrop faces the gun handle, the trigger extends out of the concave cambered surface of the longer water caltrop and faces one side of the gun barrel; the spring is a torsion spring, 1 piece of spring is symmetrical in a left-handed and right-handed manner, spring wires at two ends of 2 pieces of spring respectively extend out of 1 section of straight line section along the radial direction of the spring, the tail ends of the straight line sections are provided with a winding lug, the winding lugs at one end of each 1 piece of spring symmetrical in the left-handed and right-handed manners are respectively sleeved and hung on a pin shaft I arranged on the inner surfaces of a gun shell I and a gun shell II, and the winding lugs at the other end are respectively sleeved and hung on pin shafts II arranged on two side; the outer circle of one end of the cylindrical clamping sleeve is provided with a convex shoulder, the other end of the cylindrical clamping sleeve is provided with an outer conical pipe section, the large end of the outer conical pipe section is far away from the cylindrical pipe section of the clamping sleeve, the diameter of the small end of the outer conical pipe section is equal to the outer diameter of the cylindrical pipe section of the clamping sleeve, the clamping sleeve is uniformly cut with a plurality of grooves along the circumferential direction of the clamping sleeve, two sides of the middle part of the outer circle of the boosting sleeve which is in a circular pipe shape and has the inner diameter equal to the outer diameter of the cylindrical pipe section of the clamping sleeve symmetrically extend outwards respectively for 1; the push-aid rod is inserted into the sleeve II from the tail part of the gun body, a clamping sleeve is sleeved at the extending end penetrating through the support plate II, the end, with the groove, of the clamping sleeve faces one side of the gun barrel, a push-aid sleeve is sleeved outside the clamping sleeve, and the extending end penetrating through the clamping sleeve and the push-aid sleeve is inserted into the sleeve I; one end of a rectangular flat plate-shaped shifting fork is provided with a U-shaped groove, the symmetrical plane of the U-shaped groove is superposed with the symmetrical plane of the width direction of the rectangular plate surface of the shifting fork, the other end and the middle part of the shifting fork are provided with round holes, the axes of 2 round holes are all positioned on the symmetrical plane of the U-shaped groove of the shifting fork, 2 shifting forks are respectively fixed at the two ends of a shifting fork shaft through the round holes at one end, the axes of the round holes at the middle parts of the 2 shifting forks are coaxial, and the symmetrical planes of the U-shaped groove at one; the assembled shifting fork and shifting fork shaft assembly is respectively supported at the positions, close to the tail parts, of gun bodies of a gun shell I and a gun shell II through the extending ends of two ends of the shifting fork shaft after penetrating through the shifting fork, and 2 pin shafts III extending from the excircle of the boosting sleeve are respectively positioned in U-shaped grooves of the 2 shifting forks; one end of each of the 2 pieces of chain sheets is hinged in a round hole in the middle of each of the 2 pieces of shifting forks through a pin shaft IV, and the other end of each of the 2 pieces of chain sheets is hinged at two ends of a chain pin arranged on a trigger; the injector comprises an injection tube, a plunger and a plunger rod, wherein the injection tube in a circular tube shape is in a transparent state, one end of the injection tube is closed, the outer diameter of the injection tube is 2 times of the radius of a circular arc groove above the gun body, two ends of an outer circle are respectively provided with a convex shoulder, and two sides of the outer cylindrical surface of the injection tube are provided with 0 line of scale marks positioned at the closed end along the length direction of the injection tube; the end part of the closed end of the injection tube extends outwards to form a section of conical tube, the outer diameter of one end, close to the injection tube, of the conical tube is large, the outer diameter of one end, far away from the injection tube, of the conical tube is small, and the axis of the conical tube is parallel to the injection tube; two ends of the injection tube are arranged in the arc groove above the gun body through a hoop, and one end of the injection tube extending out of the conical tube faces the direction of the gun barrel far away from one end of the gun body; the outer diameter of the plunger is larger than the inner diameter of the injection tube, the difference value between the outer diameter of the plunger and the inner diameter of the injection tube is equal to 0.2mm-0.5mm, one end of the plunger rod, which is provided with the plunger, is inserted into the injection tube from the open end of the injection tube, and the other end of the plunger rod is connected with the end, far away from the gun tube, of the boosting rod through the transmission plate.

Based on the prior art, the gun shell of the gun body is in a shape of a thin shell and a pistol with hollow inner cavities, and is divided into a left-right symmetrical gun shell I and a left-right symmetrical gun shell II; the whole gun shell comprises a gun body in the middle, a gun barrel in the front, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the gun barrel, a bearing plate I is arranged in an inner cavity of a joint part of the gun barrel and the gun body, a round hole is formed in the bearing plate I, a bearing plate II is arranged in an inner cavity of the joint part of the tail part and the gun body, a round hole with the diameter equal to that of the round hole in the bearing plate I is formed in the bearing plate II, and the; a sleeve I is arranged between the support plate I and the foremost end of the inner cavity of the gun barrel, a sleeve II is arranged between the support plate II and the rearmost end of the inner cavity of the tail part, and the axes of the sleeve I and the sleeve II are coaxial with the common axis of the round hole on the support plate I and the round hole on the support plate II; the outermost end of the tail part of the gun shell is provided with a round hole, the center of the round hole is positioned on the axis of the sleeve II, the diameter of the round hole is equal to that of an inner hole of the sleeve II, the inner surfaces of the gun body parts of the gun shell I and the gun shell II respectively extend 1 pin shaft I inwards, and 2 pin shafts I are coaxial; the middle part of the upper part of the gun body is provided with an arc groove which is smaller than a semicircle, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail part of the gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I and the sleeve II. The trigger of the boosting mechanism is in a diamond shape, 1 diamond corner in the trigger is longer in extending length, and two side faces, perpendicular to the diamond plane direction, of the extended diamond corner are respectively in a concave arc shape and a convex arc shape; the middle part of the trigger is provided with a round hole with the axis vertical to the rhombus plane, the rhombus extending out of the diagonal of the longer rhombus is also provided with a round hole, and the axes of 2 round holes are parallel; the middle part of the trigger is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends out of 1 pin shaft II to two sides along the direction vertical to the diamond plane, 2 pin shafts II are coaxial, and the axis of the pin shaft II is parallel to the axis of the round hole in the middle part of the trigger; the trigger is arranged in the middle of the trigger shaft through a circular hole in the middle, a chain pin is arranged in another circular hole of the trigger, two ends of the trigger shaft are respectively supported at the gun body parts of the gun shell I and the gun shell II close to the gun barrel, and when one end of the trigger extending out of the longer water caltrop faces the gun handle, the trigger extends out of the concave cambered surface of the longer water caltrop and faces one side of the gun barrel; the spring is a torsion spring and is provided with 1 piece of each left-handed rotation symmetrical spring and 1 piece of each right-handed rotation symmetrical spring, the spring wires at the two ends of the 2 pieces of springs respectively extend out of 1 section of straight line section along the radial direction of the spring, the tail ends of the straight line sections are provided with a rolling lug, the rolling lugs at one end of each 1 piece of each left-handed rotation symmetrical spring and one end of each 1 piece of right-handed rotation symmetrical spring are respectively sleeved and hung on a pin shaft I arranged on the inner surfaces of a gun shell I and a gun shell II, and the. The outer circle of one end of the elastic clamping sleeve is provided with a convex shoulder, the other end of the elastic clamping sleeve is provided with an outer conical pipe section, the large end of the outer conical pipe section is far away from the cylindrical pipe section of the clamping sleeve, the diameter of the small end of the outer conical pipe section is equal to the outer diameter of the cylindrical pipe section of the clamping sleeve, the clamping sleeve is uniformly cut with a plurality of grooves along the circumferential direction of the clamping sleeve, two sides of the middle part of the outer circle of the boosting sleeve which is in a circular pipe shape and has the inner diameter equal to the outer diameter of the cylindrical pipe section of the clamping sleeve symmetrically extend outwards respectively for 1 pin shaft III; the push-aid rod is inserted into the sleeve II from the tail part of the gun body, the end, which penetrates through the support plate II and extends out, is sleeved with a clamping sleeve, one end, which is cut with a plurality of grooves, of the clamping sleeve faces towards one side of the gun barrel, the push-aid sleeve is sleeved outside the clamping sleeve, and the push-aid rod penetrates through the clamping sleeve and the end, which extends out, of the push-aid sleeve, of the push-aid rod and is inserted into the. The one end that is the shift fork of rectangle plate shape is equipped with the U-shaped groove, and the plane of symmetry in U-shaped groove and the coincidence of the plane of symmetry of the rectangular plate width direction of shift fork, and the other end and the middle part of shift fork are equipped with the round hole, and 2 round hole axes all are located the plane of symmetry in the U-shaped groove of shift fork, and 2 shift forks are fixed respectively at the both ends of shift fork axle through the round hole of one end, and the round hole axis at 2 shift fork middle parts is coaxial, and the plane of symmetry coincidence of the U-shaped groove of 2 shift fork one. The assembled shifting fork and shifting fork shaft assembly is respectively supported at the positions, close to the tail parts, of gun bodies of a gun shell I and a gun shell II through the extending ends of two ends of the shifting fork shaft after penetrating through the shifting fork, and 2 pin shafts III extending from the excircle of the boosting sleeve are respectively positioned in U-shaped grooves of the 2 shifting forks; one end of each of the 2 pieces of chain sheets is hinged in a round hole in the middle of each of the 2 pieces of shifting forks through a pin shaft IV, and the other end of each of the 2 pieces of chain sheets is hinged at two ends of a chain pin arranged on a trigger. The injection tube of the injector is in a round tube shape, the injection tube is in a transparent state, one end of the injection tube is closed, the other end of the injection tube is opened, the outer diameter of the injection tube is 2 times of the radius of the arc groove above the gun body, convex shoulders are arranged at two ends of the outer circle, scale marks are arranged at two sides of the outer cylindrical surface of the injection tube, 0 line of the scale marks is positioned at the closed end, and the scale marks are sequentially arranged towards the open end along the length direction of the injection tube; the end part of the closed end of the injection tube extends outwards to form a section of conical tube, the outer diameter of one end, close to the injection tube, of the conical tube is large, the outer diameter of one end, far away from the injection tube, of the conical tube is small, and the axis of the conical tube is parallel to the injection tube; the two ends of the injection tube are arranged in the arc groove above the gun body through the clamping hoop, and one end of the injection tube extending out of the conical tube faces the direction of the gun barrel far away from one end of the gun body. The outer diameter of a plunger made of medical rubber materials is larger than the inner diameter of the injection tube, the difference value between the outer diameter of the plunger and the inner diameter of the injection tube is equal to 0.2mm-0.5mm, one end of the plunger rod, which is provided with the plunger, is inserted into the injection tube from the open end of the injection tube, and the other end of the plunger rod is connected with the end part, far away from the gun tube, of the boosting rod through a transmission plate.

The working principle is as follows: the trigger of the boosting gun of the manual injection booster is in an unbuckled or reset state, one end of the infusion tube is sleeved on the conical tube of the injection tube of the manual injection booster, and the other end of the infusion tube is inserted into the bottle filled with liquid. The operator holds the grip of the gun body in one hand and the plunger rod and drive plate in the other hand and pulls it away from the barrel. The negative pressure is formed by the increase of the volume of the inner cavity formed by the plunger, the inner diameter of the injection tube and the closed end of the injection tube, so that the liquid in the bottle is sucked into the injection tube until the quantity of the liquid in the injection tube reaches the requirement, and then the infusion tube sleeved on the conical tube of the injection tube is removed.

Sleeving a transfusion tube which is arranged in a parturient and is extended outwards from a disposable cervical dilatation balloon on a conical tube of an injection tube, pressing a trigger of a boosting gun by an operator with fingers, compressing a spring by the trigger, and pulling a shifting fork to swing around a shifting fork shaft and towards the direction close to a gun barrel through a chain sheet; meanwhile, the shifting fork shifts the boosting sleeve sleeved on the excircle of the clamping sleeve to slide towards the direction close to the gun barrel through a U-shaped groove arranged at one end of the shifting fork. Because one end of the clamping sleeve is provided with the outer conical pipe section, the large end of the outer conical pipe section is far away from the cylindrical pipe section of the clamping sleeve, the clamping sleeve is evenly cut with a plurality of grooves along the circumferential direction of the clamping sleeve, and the clamping sleeve has elasticity. When the boosting sleeve slides from the cylindrical section of the clamping sleeve to the outer conical section, the inner diameter of the boosting sleeve is smaller than the diameter of the large end of the outer conical section of the clamping sleeve, so that the clamping sleeve is gradually clamped on the boosting rod by the boosting sleeve through the outer conical section of the clamping sleeve, the boosting rod is driven, the plunger rod and the plunger piston are driven to move towards the closed end of the injection tube through the driving plate, and therefore a part of liquid in the injection tube is injected into the disposable cervical dilatation balloon in a parturient body due to the increase of the pressure in the injection tube.

After the liquid injection is finished, the trigger is released, the trigger is reset under the action of the spring, the chain sheet drives the shifting fork to swing towards the direction away from the gun barrel, and then the U-shaped groove at one end of the shifting fork drives the boosting sleeve to slide towards the direction away from the gun barrel. The outer conical pipe section at one end of the clamping sleeve and the elastic action ensure that the boosting sleeve loosens the clamping sleeve clamped on the boosting rod, so that the boosting sleeve cannot stir the clamping sleeve to slide at the beginning of the reset of the trigger, and the boosting rod stays at the original position without moving; only when the boosting sleeve contacts the outer circular convex shoulder of the clamping sleeve, the clamping sleeve is driven to slide by the convex shoulder. However, since the clamping sleeve does not clamp the push-aid rod, the plunger and the like will still stay in place, and the liquid pressure in the syringe will also remain unchanged.

When the trigger is completely reset, the trigger is pulled again, and the last action can be repeated, namely, a part of liquid is injected into the disposable cervical dilatation balloon in the parturient body again. The trigger is repeatedly pulled for a plurality of times, and then the liquid can be continuously injected into the disposable cervical dilatation saccule. The two sides of the outer cylindrical surface of the injection tube are provided with scale marks, so that the quantity of the injected liquid can be accurately controlled, and the injection is finished when the cervix and the vagina of the parturient reach the expected expansion degree.

Compared with the current situation in the field and the prior art, the utility model, because the large end of the outer cone pipe section with one end of the elastic clamping sleeve is far away from the cylindrical pipe section of the clamping sleeve, and a plurality of grooves are evenly cut along the circumferential direction of the clamping sleeve, when the boosting sleeve slides from the cylindrical section of the clamping sleeve to the outer cone section, the clamping sleeve can be gradually clamped on the boosting rod, the boosting rod is driven, and the plunger is driven to move through the driving plate, so that the liquid in the injection pipe is injected into the disposable cervix dilatation saccule in the puerpera body, thereby saving time and labor, and greatly reducing the labor intensity of operators; because the scale marks are arranged on the two sides of the outer cylindrical surface of the injection tube, the quantity of the injected liquid can be accurately controlled, the pain of the lying-in woman caused by the overlarge quantity of the injected liquid can be avoided, and the cervical orifice and the vagina can not be dilated due to the insufficient quantity of the injected liquid.

Drawings

FIG. 1 is an isometric view of an embodiment of the present invention with the trigger pulled to a limit and the plunger advanced into the syringe in an empty state;

FIG. 2 is an isometric view of the embodiment of FIG. 1 of the present invention with the gun housing I hidden, the trigger in the cocked to the limit, and the plunger advanced into the syringe in an empty state;

FIG. 3 is an isometric view of the embodiment of FIG. 1 of the present invention with the gun housing I hidden, the trigger in the reset position, and the plunger retracted to a maximum volume of fluid in the syringe;

FIG. 4 is an isometric view of the trigger, trigger shaft and chain pin assembly of the embodiment of FIG. 1 of the present invention;

FIG. 5 is an isometric view of the fork, fork shaft and pin shaft IV assembly of the embodiment of FIG. 1 of the present invention;

FIG. 6 is an isometric view of the thrust sleeve of the embodiment of the present invention shown in FIG. 1;

FIG. 7 is an isometric view of the clamping sleeve of the embodiment of FIG. 1 of the present invention;

figure 8 is an isometric view of the syringe of the embodiment of figure 1 of the present invention.

Detailed Description

1. The gun comprises a gun shell I2, a gun shell II 3, a supporting plate I4, a supporting plate II 5, a sleeve I6, a sleeve II 7, a pin shaft I8, a trigger 9, a spring 10, a clamping sleeve 11, a boosting sleeve 12, a boosting rod 13, a shifting fork 14, a chain sheet 15, a pin shaft II 16, a trigger shaft 17, a chain pin 18, a pin shaft III 19, a shifting fork shaft 20, a pin shaft IV 21, an injection tube 22, a plunger 23, a plunger rod 24, a conical tube 25, a hoop 26 and a transmission plate.

In the embodiment shown in fig. 1-8: the gun shell of the gun body is in a shape of a thin shell or a pistol with a hollow inner cavity, and is divided into a left-right symmetrical gun shell I1 and a right-left symmetrical gun shell II 2; the whole gun shell comprises a gun body in the middle, a gun barrel at the front, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the gun barrel, a bearing plate I3 is arranged in an inner cavity of a joint part of the gun barrel and the gun body, a round hole is formed in the bearing plate I3, a bearing plate II 4 is arranged in an inner cavity of the joint part of the tail part and the gun body, a round hole with the diameter equal to that of the round hole in the bearing plate I3 is formed in the bearing plate II 4, and the round hole; a sleeve I5 is arranged between the bearing plate I3 and the foremost end of the inner cavity of the gun barrel, a sleeve II 6 is arranged between the bearing plate II 4 and the rearmost end of the inner cavity of the tail part, and the axes of the sleeve I5 and the sleeve II 6 are coaxial with the common axis of the round hole on the bearing plate I3 and the round hole on the bearing plate II 4; the outermost end of the tail part of the gun shell is provided with a round hole, the center of the round hole is positioned on the axis of the sleeve II 6, the diameter of the round hole is equal to the diameter of an inner hole of the sleeve II 6, the inner surfaces of the gun body parts of the gun shell I1 and the gun shell II 2 respectively extend 1 pin shaft I7 inwards, and 2 pin shafts I7 are coaxial; the middle part of the upper part of the gun body is provided with an arc groove which is smaller than a semicircle, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail part of the gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I5 and the sleeve II 6. The trigger 8 of the boosting mechanism is in a diamond shape, the extending length of 1 diamond corner is longer, and two side surfaces of the longer extending diamond corner, which are vertical to the plane direction of the diamond shape, are respectively in a concave arc shape and a convex arc shape; the middle part of the trigger 8 is provided with a round hole with the axis vertical to the rhombus plane, the rhombus extending out of the opposite angle of the longer rhombus is also provided with a round hole, and the axes of 2 round holes are parallel; the middle part of the trigger 8 is close to one end of the longer water chestnut, one side of the convex cambered surface close to the longer water chestnut extends out of 1 pin shaft II 15 to two sides along the direction vertical to the diamond plane, 2 pin shafts II 15 are coaxial, and the axis of the pin shaft II 15 is parallel to the axis of the round hole in the middle part of the trigger 8; the trigger 8 is arranged in the middle of a trigger shaft 16 through a circular hole in the middle, a chain pin 17 is arranged in another circular hole of the trigger 8, two ends of the trigger shaft 16 are respectively supported at the gun body parts of the gun shell I1 and the gun shell II 2 close to the gun barrel, and when one end of the trigger 8 extending out of the longer water caltrop faces the gun handle, the trigger 8 extends out of the concave cambered surface of the longer water caltrop and faces one side of the gun barrel; the spring 9 is a torsion spring and is provided with 1 piece of each left-handed rotation and 1 piece of right-handed rotation, the spring wires at two ends of 2 pieces of the spring 9 respectively extend out of 1 section of straight line section along the radial direction of the spring 9, the tail ends of the straight line sections are provided with a winding lug, the winding lugs at one end of each 1 piece of the spring 9 with the left-handed rotation and the right-handed rotation are respectively sleeved and hung on a pin shaft I7 arranged on the inner surfaces of the gun shell I1 and the gun shell II 2, and the winding lugs at the other end are respectively sleeved and hung on a pin shaft II. The outer circle of one end of the elastic clamping sleeve 10 is provided with a convex shoulder, the other end of the elastic clamping sleeve 10 is provided with an outer conical pipe section, the large end of the outer conical pipe section is far away from the cylindrical pipe section of the clamping sleeve 10, the diameter of the small end of the outer conical pipe section is equal to the outer diameter of the cylindrical pipe section of the clamping sleeve 10, the clamping sleeve 10 is evenly cut with 8 grooves along the circumferential direction of the clamping sleeve 10, two sides of the middle part of the outer circle of the boosting sleeve 11 which is in a circular pipe shape and has the inner diameter equal to the outer diameter of the cylindrical pipe section of the clamping sleeve 10 symmetrically extend outwards respectively for 1 pin shaft III 18, and; the push-aid rod 12 is inserted into the sleeve II 6 from the tail part of the gun body, the end, which extends out of the support plate II 4, is sleeved with a clamping sleeve 10, the end, which is cut with 8 grooves, of the clamping sleeve 10 faces to one side of the gun barrel, the push-aid sleeve 11 is sleeved outside the clamping sleeve 10, and the end, which extends out of the push-aid rod 12 after passing through the clamping sleeve 10 and the push-aid sleeve 11, is inserted into the sleeve I5. One end of the shifting fork 13 which is a rectangular flat plate is provided with a U-shaped groove, the symmetrical plane of the U-shaped groove coincides with the symmetrical plane of the rectangular flat plate of the shifting fork 13 in the width direction, the other end and the middle part of the shifting fork 13 are provided with round holes, and 2 round hole axes are all located on the symmetrical plane of the U-shaped groove of the shifting

fork

13, 2 shifting forks 13 are respectively fixed at two ends of a shifting fork shaft 19 through the round holes at one end, the round hole axes at the middle parts of the 2 shifting forks 13 are coaxial, and the symmetrical plane of the U-shaped groove at one end of the 2 shifting. The assembled shifting fork 13 and shifting fork shaft 19 assembly is supported at the positions, close to the tail, of gun bodies of the gun shell I1 and the gun shell II 2 respectively through the extending ends of two ends of the shifting fork shaft 19 after penetrating through the shifting

fork

13, and 2 pin shafts III 18 extending from the excircle of the boosting sleeve 11 are respectively positioned in U-shaped grooves of the 2 shifting forks 13; one end of each 2 piece of chain sheet 14 is hinged in a round hole in the middle of each 2 piece of shifting fork 13 through a pin shaft IV 20, and the other end of each 2 piece of chain sheet 14 is hinged at two ends of a chain pin 17 arranged on the trigger 8. The injection tube 21 of the injector is in a round tube shape, the injection tube 21 is in a transparent state, one end of the injection tube 21 is closed, the other end of the injection tube 21 is open, the outer diameter of the injection tube 21 is 2 times of the radius of the arc groove above the gun body, the two ends of the outer circle are provided with convex shoulders, the two sides of the outer cylindrical surface of the injection tube 21 are provided with scale marks, 0 line of the scale marks is positioned at the closed end, and the scale marks are sequentially arranged towards the open end along the length direction of the injection tube 21; a section of conical tube 24 extends outwards from the end part of the closed end of the injection tube 21, the outer diameter of one end, close to the injection tube 21, of the conical tube 24 is large, the outer diameter of one end, far away from the injection tube 21, of the conical tube 24 is small, and the axis of the conical tube 24 is parallel to the injection tube 21; the two ends of the injection tube 21 are mounted in the arc groove above the gun body through a clamp 25, and one end of the injection tube extending out of the conical tube 24 faces the direction of the end of the gun barrel far away from the gun body. The outer diameter of a plunger 22 made of medical rubber materials is larger than the inner diameter of a syringe 21, the difference value between the outer diameter of the plunger 22 and the inner diameter of the syringe 21 is equal to 0.2mm-0.5mm, one end of a plunger rod 23, which is provided with the plunger 22, is inserted into the syringe 21 from the open end of the syringe 21, and the other end of the plunger rod 23 is connected with one end of a boosting rod 12, which is far away from a barrel, through a transmission plate 26.

Claims

1. The utility model provides a manual injection booster, includes boosting rifle and syringe, its characterized in that: the boosting gun comprises a gun body and a boosting mechanism, wherein the gun body comprises a gun shell, a supporting plate and a sleeve; the gun shell is in a shape of a thin shell or a pistol with a hollow inner cavity, and comprises a gun shell I (1) and a gun shell II (2) which are symmetrical left and right; the whole gun shell is divided into a gun body in the middle, a gun barrel in the front, a tail part far away from the rear upper part of the gun barrel and a gun handle positioned below the gun body, a bearing plate I (3) is arranged in an inner cavity of a joint part of the gun barrel and the gun body, a round hole is formed in the bearing plate I (3), a bearing plate II (4) is arranged in an inner cavity of the joint part of the tail part and the gun body, a round hole with the diameter equal to that of the round hole in the bearing plate I (3) is formed in the bearing plate II (4), and the round hole in the; a sleeve I (5) is arranged between the bearing plate I (3) and the foremost end of the inner cavity of the gun barrel, a sleeve II (6) is arranged between the bearing plate II (4) and the rearmost end of the inner cavity of the tail part, and the axes of the sleeve I (5) and the sleeve II (6) are coaxial with the common axis of the round hole on the bearing plate I (3) and the round hole on the bearing plate II (4); the outermost end of the tail part of the gun shell is provided with a round hole, the center of the round hole is positioned on the axis of the sleeve II (6), the diameter of the round hole is equal to that of an inner hole of the sleeve II (6), the inner surfaces of the gun body parts of the gun shell I (1) and the gun shell II (2) respectively extend 1 pin shaft I (7) inwards, and the 2 pin shafts I (7) are coaxial; an arc groove which is smaller than a semicircle is arranged in the middle of the upper part of the gun body, the length of the arc groove is smaller than the total length from the front end of the gun barrel to the tail part of the gun shell, and the axis of the arc groove is parallel to the common axis of the sleeve I (5) and the sleeve II (6); the boosting mechanism comprises a trigger (8), a spring (9), a clamping sleeve (10), a boosting sleeve (11), a boosting rod (12), a shifting fork (13) and a chain sheet (14), the trigger (8) is in a diamond shape, the extending length of a water chestnut is longer, and two side faces, perpendicular to the plane direction of the diamond, of the extended water chestnut are in concave arc shapes and convex arc shapes respectively; the middle part of the trigger (8) is provided with a round hole with an axis vertical to the rhombus plane, the rhombus extending out of the diagonal of the longer rhombus is also provided with a round hole, the axes of 2 round holes are parallel, one side of the middle part of the trigger (8), which is close to one end of the longer rhombus and is close to the convex cambered surface of the longer rhombus, respectively extends 1 pin shaft II (15) to two sides along the direction vertical to the rhombus plane, the 2 pin shafts II (15) are coaxial, and the axis of the pin shaft II (15) is parallel to the axis of the round hole in the middle part of the trigger; the trigger (8) is arranged in the middle of a trigger shaft (16) through a round hole in the middle, a chain pin (17) is arranged in another round hole of the trigger (8), two ends of the trigger shaft (16) are respectively supported at the gun body positions, close to the gun barrel, of the gun shell I (1) and the gun shell II (2), and when one end, extending out of the longer water caltrop, of the trigger (8) faces towards the gun handle, the concave cambered surface, extending out of the longer water caltrop, of the trigger (8) faces towards one side of the gun barrel; the spring (9) is a torsion spring and is provided with 1 piece of spring wire which is symmetrical in a left-handed and right-handed manner, the spring wires at two ends of 2 pieces of spring (9) respectively extend out of 1 section of straight line section along the radial direction of the spring (9), the tail ends of the straight line sections are provided with a winding lug, the winding lugs at one end of each 1 piece of spring (9) which is symmetrical in the left-handed and right-handed manners are respectively sleeved and hung on a pin shaft I (7) arranged on the inner surfaces of the gun shell I (1) and the gun shell II (2), and the winding lugs at the other end are respectively sleeved and hung on a pin shaft II (15) arranged; a convex shoulder is arranged on the excircle of one end of a cylindrical clamping sleeve (10), an outer conical pipe section is arranged on the other end of the cylindrical clamping sleeve, the large end of the outer conical pipe section is far away from the cylindrical pipe section of the clamping sleeve (10), the diameter of the small end of the outer conical pipe section is equal to the outer diameter of the cylindrical pipe section of the clamping sleeve (10), a plurality of grooves are uniformly cut in the clamping sleeve (10) along the circumferential direction of the clamping sleeve (10), 1 pin shaft III (18) symmetrically extends outwards from the two sides of the middle part of the excircle of a boosting sleeve (11) which is in a circular pipe shape and has the inner diameter equal to the outer diameter of the cylindrical pipe section of the clamping sleeve (10), and 2 pin shafts III; the auxiliary push rod (12) is inserted into the sleeve II (6) from the tail of the gun body, a clamping sleeve (10) is sleeved at the extending end of the auxiliary push rod after penetrating through the support plate II (4), the end, with a groove, of the clamping sleeve (10) faces one side of the gun barrel, the auxiliary push sleeve (11) is sleeved outside the clamping sleeve (10), and the extending end of the auxiliary push rod (12) penetrates through the clamping sleeve (10) and the auxiliary push sleeve (11) and is inserted into the sleeve I (5); one end of a rectangular flat shifting fork (13) is provided with a U-shaped groove, the symmetrical surface of the U-shaped groove is superposed with the symmetrical surface of the rectangular flat surface of the shifting fork (13) in the width direction, the other end and the middle part of the shifting fork (13) are provided with round holes, the axes of 2 round holes are all positioned on the symmetrical surface of the U-shaped groove of the shifting fork (13), 2 shifting forks (13) are respectively fixed at the two ends of a shifting fork shaft (19) through the round holes at one end, the axes of the round holes at the middle parts of the 2 shifting forks (13) are coaxial, and the symmetrical surfaces of the U-shaped grooves at one ends of the 2 shifting forks (; the assembled shifting fork (13) and shifting fork shaft (19) assembly is supported at the positions, close to the tail, of gun bodies of the gun shell I (1) and the gun shell II (2) respectively through the extending ends of the two ends of the shifting fork shaft (19) after penetrating through the shifting fork (13), and 2 pin shafts III (18) extending from the excircle of the boosting sleeve (11) are respectively positioned in U-shaped grooves of the 2 shifting forks (13); one end of each of the 2 pieces of chain sheets (14) is hinged in a round hole in the middle of the 2 pieces of shifting forks (13) through a pin shaft IV (20), and the other end of each of the 2 pieces of chain sheets (14) is hinged at two ends of a chain pin (17) arranged on a trigger (8); the injector comprises an injection tube (21), a plunger (22) and a plunger rod (23), the injection tube (21) is in a transparent state, one end of the injection tube (21) is closed, the outer diameter of the injection tube (21) is equal to 2 times of the radius of an arc groove above the gun body, both ends of an outer circle are provided with convex shoulders, and both sides of the outer cylindrical surface of the injection tube (21) are provided with 0 line of scale marks positioned at the closed end along the length direction of the injection tube (21); the end part of the closed end of the injection tube (21) extends outwards to form a section of conical tube (24), the outer diameter of one end, close to the injection tube (21), of the conical tube (24) is large, the outer diameter of one end, far away from the injection tube (21), of the conical tube is small, and the axis of the conical tube (24) is parallel to the injection tube (21); two ends of the injection tube (21) are arranged in the arc groove above the gun body through a hoop (25), and one end of the injection tube extending out of the conical tube (24) faces to the direction of the barrel far away from one end of the gun body; the outer diameter of the plunger (22) is larger than the inner diameter of the injection tube (21), the difference between the outer diameter of the plunger (22) and the inner diameter of the injection tube (21) is equal to 0.2mm-0.5mm, one end of the plunger rod (23) provided with the plunger (22) is inserted into the injection tube (21) from the opening end of the injection tube (21), and the other end of the plunger rod (23) is connected with the end, far away from the barrel, of the boosting rod (12) through a transmission plate (26).