CN213347229U

CN213347229U - Quantitative injector

Info

Publication number: CN213347229U
Application number: CN202020309718.XU
Authority: CN
Inventors: 张旭; 茅慧华
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-06-04
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a quantitative injector, including the injection tube, the injection head, a piston, the piston rod, the piston plush copper, push away the handle, the baffle, the attenuator checkpost, injection head integrated into one piece is in the lower part of injection tube, the injection head is linked together with the injection tube, the baffle is at the top of injection tube, push away handle and piston plush copper integrated into one piece top and bottom at the piston rod, the piston sets up in the upper portion of piston plush copper, the piston can reciprocate in the cavity of injection tube under the drive of piston rod, radial equidistant notch cuttype groove that is equipped with at the piston rod, open the spout that is linked together with the injection tube cavity in the baffle, attenuator checkpost activity card is established in the spout, move the attenuator checkpost to injection tube cavity end and can make the attenuator checkpost insert in the notch cuttype groove, the attenuator checkpost can move in the notch cuttype groove when. The quantitative injector can realize accurate quantitative injection of the medicament extruded from the cavity of the injection tube by combining the stepped groove and the damper clip.

Description

Quantitative injector

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a quantitative injector.

Background

The existing injector basically comprises an injection tube, a piston and a piston rod, wherein the piston rod is pushed by hands during injection to enable the piston to move towards the direction of an injection port of the injection tube, so that liquid medicament in the injection tube is injected into a target body. The injected medicament amount is determined by manual judgment, in particular by observing and judging scale numerical values marked on the injection tube. At present, hemorrhoid ointment and antibiotic ointment are squeezed into anus and vagina and fistula, administration is usually carried out by feeling, and quantitative administration cannot be realized. This results in a large artificial influence on the amount of the drug to be injected, excessive administration, waste, and insufficient administration, making it difficult to achieve a desired drug effect.

Disclosure of Invention

An object of the utility model is to provide a quantity injector that simple structure is reliable, easy to operate and use and the medicament injection volume is accurate.

In order to achieve the above object, the utility model adopts the technical scheme that, a quantitative injector comprises an injection tube, an injection head, a piston rod, a piston raised head, a push handle, a baffle plate and a damper clip, wherein the injection head is integrally formed at the lower part of the injection tube, the injection head is communicated with the injection tube, the baffle plate is sleeved at the top part of the injection tube, the upper surface of the baffle plate is flush with the top part of the injection tube, the push handle and the piston raised head are integrally formed at the top end and the bottom end of the piston rod, the piston is arranged at the upper part of the piston raised head, the piston can move up and down in the cavity of the injection tube under the driving of the piston rod, stepped grooves are arranged at equal intervals in the radial direction of the piston rod, a sliding groove communicated with the cavity of the injection tube is arranged in the baffle plate, the damper clip is movably clamped in, the damper catch can move in the stepped slot when the piston rod is rotated or pushed downward.

As an improvement of the utility model, the tank bottom of spout is equipped with the bayonet socket inwards, is equipped with the lug with bayonet socket looks adaptation on the attenuator checkpost, and the lug is stuck all the time and is established in the bayonet socket to the lug can remove in the bayonet socket.

As an improvement of the utility model, the attenuator checkpost includes plush copper, damping spring, backup pad, stopper, and the backup pad is embedded in the spout, and the lug sets up in the bottom both sides of backup pad, sets up the U-shaped groove at the top of backup pad, and plush copper and damping spring all block establish in the U-shaped groove, and the one end and the damping spring front end fixed connection of plush copper, the other end of plush copper stretches out from the inner of U-shaped groove, exposes in the outside of U-shaped groove, and the plush copper can insert in the notch cuttype groove, and the stopper sets up in the outer end of U-shaped groove, damping spring's rear end and stopper looks butt.

As an improvement of the present invention, the stepped groove is located above the piston, and the stepped groove is spirally or linearly wound in the piston rod.

As an improvement of the utility model, the ladder groove includes the cross slot of equal channel width and erects the groove, and the cross slot is with erect the continuous interval arrangement in groove, the attenuator checkpost can insert the cross slot and erect in the groove to can smoothly switch the transition between the cross slot and erecting the groove.

As an improvement of the utility model, the transverse groove transversely sets up, erects the radial setting of groove, and the groove length of transverse groove is 1/4 of the circumference length of piston rod, can make the attenuator checkpost transition to erecting the groove from the transverse groove with the piston rod rotation 90.

As an improvement of the utility model, the cross slot sets up between two adjacent perpendicular grooves, and the first section and the tail end in ladder groove are perpendicular groove, and all lengths that erect the groove are the same, and all perpendicular equidistant arrangements in groove.

Compared with the prior art, the utility model discloses a quantitative injector overall structure design benefit, rational in infrastructure stability, easy operation is used, the medicament injection amount is accurate controllable, specifically set up the ladder groove in the piston rod and set up the attenuator checkpost that can insert in the ladder groove in the baffle, move the accurate ration injection or the dosing of switching over the high position and realizing medicament in the injection tube cavity through the attenuator checkpost in the ladder groove, human error is low, and the precision is good, long service life, the specially adapted anus, the vagina, the ration of position ointments such as fistula is dosed.

Drawings

Fig. 1 is a schematic structural view of a quantitative injector using a spiral stepped groove according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of the quantitative injector of the preferred embodiment of the present invention adopting a straight line-shaped stepped groove.

Fig. 3 is a schematic view showing a damper clip mounting structure of the quantitative injector according to the preferred embodiment of the present invention.

In the figure: 1-piston rod, 2-step groove, 3-piston, 4-piston raised head, 5-baffle, 6-injection tube, 7-damper clip, 8-injection head, 9-push handle.

Detailed Description

For the purposes of promoting an understanding and appreciation of the invention, the invention will be further described and illustrated in connection with the accompanying drawings.

As shown in figure 1, the quantitative injector comprises an injection tube 6, an injection head 8, a piston 3, a piston rod 1, a piston raised head 4, a push handle 9, a baffle plate 5 and a damper clip 7, wherein the injection head 8 is integrally formed at the lower part of the injection tube 6, and the injection head 8 is communicated with the injection tube 6. Baffle 5 cover is established at the top of

injection tube

6, and 5 upper surfaces of baffle and 6 tops of injection tube are parallel and level. The push handle 9 and the piston raised head 4 are integrally formed at the top end and the bottom end of the piston rod 1, the piston 3 is arranged at the upper part of the piston raised head 4, and the piston raised head 4 can extend into the injection head 8, so that the accuracy of the dosage is further enhanced. The piston 3 can reciprocate in the cavity of injection tube 6 under the drive of piston rod 1, and the air of 6 cavities of injection tube can be got rid of in the upward movement of piston 3, and piston 3 moves down and is used for the medicament propelling movement in 6 cavities of injection tube to injection head 8 department. The radial equal interval of piston rod 1 is equipped with the ladder groove 2, opens in baffle 5 and is equipped with a spout that is linked together with 6 cavitys of injection tube, and the activity card of attenuator checkpost 7 is established in the spout, moves the attenuator checkpost 7 to 6 cavitys of injection tube and can make the attenuator checkpost 7 insert in the ladder groove 2, and the attenuator checkpost 7 can move in ladder groove 2 when rotating or pushing piston rod 1 downwards. Through the structural design of the damper clip 7 and the stepped groove 2, the high-precision quantitative injection of the medicament in the cavity of the syringe 6 can be effectively realized.

As shown in fig. 1 and 2, the stepped groove 2 is located above the piston 3, and the stepped groove 2 is spirally or linearly wound in the piston rod 1. The ladder groove 2 includes the cross slot of equal slot width and erects the groove, and the cross slot with erect the continuous interval arrangement in groove, the attenuator checkpost 7 can insert the cross slot and erect in the groove to can smoothly switch the transition between the cross slot and perpendicular groove. When the damper clip 7 is located in the lateral groove, the damper clip 7 is restricted by the groove wall so that the piston rod 1 cannot move downward, and when the damper clip 7 is located in the vertical groove, the damper clip 7 can slide in the vertical groove so that the piston rod 1 can move downward.

The transverse grooves are transversely arranged, the vertical grooves are radially arranged, the groove length of each transverse groove is 1/4 of the circumferential length of the piston rod 1, and the damper clips 7 can be transited from the transverse grooves to the vertical grooves by rotating the piston rod 1 by 90 degrees. The transverse groove is arranged between two adjacent vertical grooves, and the first section and the tail section of the stepped groove 2 are vertical grooves, so that the maximum amount of medicament injection can be realized, and the space of the inner cavity of the injection cylinder 6 is prevented from being wasted. The lengths of all the vertical grooves are the same, the length of the vertical groove determines the unit injection amount of the medicament of the injector, and the number of the vertical grooves can be determined according to the total injection amount of the medicament of the injector. All the vertical slots are arranged at equal intervals.

The bottom of the groove both sides of spout are equipped with the bayonet socket inwards, are equipped with the lug with bayonet socket looks adaptation on the attenuator checkpost 7, and the lug is blocked all the time and is established in the bayonet socket to the lug can remove in the bayonet socket, thereby makes attenuator checkpost 7 can slide in the spout.

As shown in fig. 3, the damper clip 7 includes a protruding head, a damping spring, a support plate, and a stopper, and the support plate is embedded in the sliding groove to support the protruding head and the damping spring. The lug sets up in the bottom both sides of backup pad, and the backup pad can move in the spout. The U-shaped groove is formed in the top of the supporting plate, the raised head and the damping spring are clamped in the U-shaped groove, one end of the raised head is fixedly connected with the front end of the damping spring, the other end of the raised head extends out of the inner end of the U-shaped groove and is exposed outside the U-shaped groove, the raised head can be inserted into the stepped groove 2, the limiting block is arranged at the outer end of the U-shaped groove, and the rear end of the damping spring is abutted to the limiting block. When the raised head is inserted into the stepped groove 2, the raised head can be stably abutted against the stepped groove 2 under the elastic force of the damping spring, and meanwhile, the downward movement of the piston rod 1 cannot be influenced.

Before the quantitative injector sucks the medicament, the piston rod 1 and the piston 3 are positioned in the cavity of the syringe 6, and the bottom of the piston 3 is contacted with the connecting part between the cavity of the syringe 6 and the injection head 8, so that the piston raised head 4 extends into the injection head 8. When the medicament needs to be sucked, the damper clip 7 is pulled out from the chute by using external force, so that the raised head on the damper clip 7 is not contacted with the stepped groove 2 on the piston rod 1 and is in a loose state. Before the medicament absorbs and carries out the medicament injection after accomplishing, reuse external force and stretch into 6 cavity departments of injection tube with attenuator checkpost 7 by the spout to make attenuator checkpost 7 insert in the vertical slot of ladder groove 2, press and push away handle 9 and push away piston rod 1 and extrude the medicament downwards, attenuator checkpost 7 also upwards remove until horizontal slot department stops in vertical slot simultaneously, thereby realize the medicament ration injection. When the medicine is injected again, the piston rod 1 can be rotated by 90 degrees so that the damper clips 7 move in the transverse grooves until the vertical grooves stop, then the push handle 9 is pressed to push the piston rod 1 downwards to extrude the medicine, and meanwhile, the damper clips 7 move upwards in the vertical grooves until the transverse grooves stop, so that the quantitative injection of the medicine is realized. Such a cycle may enable accurate dosing of the medicament.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A dosing syringe characterized by: the injection head is integrally formed at the lower part of the injection tube, the injection head is communicated with the injection tube, the baffle is sleeved at the top of the injection tube, the upper surface of the baffle is flush with the top of the injection tube, the push handle and the piston raised head are integrally formed at the top end and the bottom end of the piston rod, the piston is arranged at the upper part of the piston raised head, the piston can move up and down in a cavity of the injection tube under the driving of the piston rod, stepped grooves are formed in the piston rod at equal intervals in the radial direction, a sliding groove communicated with the cavity of the injection tube is formed in the baffle, the damper clamp is movably clamped in the sliding groove, the damper clamp can be inserted into the stepped grooves by moving the damper clamp towards the cavity end of the injection tube, and the damper clamp can move in the stepped grooves when the piston rod is rotated or pushed downwards.

2. The quantitative injector as claimed in claim 1, wherein the bottom of the groove of the slide groove is provided with a bayonet inward, the damper clip is provided with a projection adapted to the bayonet, the projection is always engaged in the bayonet, and the projection can move in the bayonet.

3. The quantitative syringe of claim 2, wherein the damper clip comprises a raised head, a damping spring, a support plate and a limiting block, the support plate is embedded in the sliding groove, the projection is arranged on two sides of the bottom of the support plate, a U-shaped groove is formed in the top of the support plate, the raised head and the damping spring are clamped in the U-shaped groove, one end of the raised head is fixedly connected with the front end of the damping spring, the other end of the raised head extends out of the inner end of the U-shaped groove and is exposed outside the U-shaped groove, the raised head can be inserted into the stepped groove, the limiting block is arranged at the outer end of the U-shaped groove, and the rear end of the damping spring is abutted to the.

4. The dosing syringe of claim 3 wherein the stepped recess is located above the plunger, the stepped recess being helically or linearly coiled in the plunger rod.

5. The quantitative injector of claim 4, wherein said stepped grooves comprise horizontal and vertical grooves of equal groove width, which are continuously spaced apart, and said damper clips can be inserted into the horizontal and vertical grooves and smoothly switch the transition between the horizontal and vertical grooves.

6. The dosing syringe of claim 5 wherein the transverse slots are transversely disposed and the vertical slots are radially disposed, the transverse slots having a slot length of 1/4 degrees of the circumferential length of the plunger rod, rotation of the plunger rod through 90 degrees causing the damper clip to transition from the transverse slots to the vertical slots.

7. The quantitative injector of claim 6, wherein said transverse groove is disposed between two adjacent vertical grooves, and the first and last sections of the stepped groove are vertical grooves, and all the vertical grooves have the same length.