CN111760130A

CN111760130A - Quantitative anesthetic injector

Info

Publication number: CN111760130A
Application number: CN202010758821.7A
Authority: CN
Inventors: 安静; 闫小强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-10-13
Anticipated expiration: 2040-07-31
Also published as: CN111760130B

Abstract

The invention provides an anesthetic quantitative injector which effectively solves the problems that in the prior art, the injection dosage of each time is inconsistent, the injection dosage before and after injection is uneven, the anesthetic effect is influenced, and the operation is not facilitated; the technical scheme for solving the problem is that the injection device comprises an empty syringe barrel, wherein a fixing plate is arranged at the upper end of the empty syringe barrel, a rectangular shell is arranged above the fixing plate, a first friction wheel is arranged in the shell, a second friction wheel is arranged on the upper side of the first friction wheel, worm wheels are arranged on two sides in a cavity of the shell, a worm is meshed on one side of each worm wheel, and a friction disc is arranged on one side of each worm wheel; a planetary gear mechanism is arranged between the fixed plate and the shell, wherein a hollow cylinder is arranged at the upper end of the gear ring, the upper end of the hollow cylinder is fixed with the first friction wheel, the upper end of a central shaft of the sun wheel is fixed with the second friction wheel, a screw is fixed at the lower end of the planet carrier, a sliding cylinder is sleeved at the lower end of the screw, and the lower end of the sliding cylinder is a piston head; there is the rotary drum in the hollow section of thick bamboo outside, and there is the fly leaf in the hollow section of thick bamboo outside, has a plurality of recesses on the disc outside the rotary drum, has protruding piece on the rotary drum.

Description

Quantitative anesthetic injector

Technical Field

The invention relates to the technical field of medical anesthesia, in particular to an anesthesia quantitative injector.

Background

The traditional injector mainly performs quantitative injection according to the scales on the cylinder wall, and the inaccurate control of the injection dosage can bring serious consequences due to the sight line and the hand speed of an operator. For example, local infiltration anesthesia commonly used in surgery often requires a plurality of quantitative injections, which are sequentially penetrated into the skin along one end of a surgical incision line to form a skin-hump band, and then local anesthetic is injected into the subcutaneous tissue through the skin-hump, so that the skin and the subcutaneous tissue can be cut. In the prior art, when the anesthetic is injected, an operator injects the anesthetic according to experience, so that the injection dosage is inconsistent, if the incision is long and the tissue needing operation is deep, the injection dosage is inconsistent, the injection dosage is not uniform, the anesthetic effect is influenced, and the operation is not facilitated.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the anesthetic quantitative injector which effectively solves the problems that the anesthetic effect is influenced and the operation is not facilitated due to the fact that the dosage injected each time in the anesthetic injection in the prior art is inconsistent and the dosage injected before and after is not uniform.

The technical scheme includes that the injection device comprises a vertically-placed hollow syringe barrel, a horizontal fixing plate is arranged at the upper end of the hollow syringe barrel, a rectangular shell is arranged above the fixing plate, a space is formed between the fixing plate and the shell, a horizontal and rotatable first friction wheel is arranged in the shell, the diameter of the first friction wheel is gradually reduced from bottom to top, a second friction wheel is arranged on the upper side of the first friction wheel, the first friction wheel and the second friction wheel are arranged in a vertical and symmetrical mode, worm wheels capable of rotating left and right are arranged on the left side and the right side in a cavity of the shell, a vertical and rotatable worm is meshed with one side of the worm wheel far away from the first friction wheel, a rotatable friction disc is fixed on one side of the worm wheel close to the first friction wheel, the worm wheels can drive the friction disc to swing up and down by taking the worm wheels as circle centers, and the first friction; a planetary gear mechanism is arranged in an interval between the fixed plate and the shell, wherein a hollow cylinder coaxial with the gear ring is arranged at the upper end of the gear ring, the upper end of the hollow cylinder penetrates through the side wall of the shell and is fixed with the first friction wheel, the upper end of a central shaft of the sun gear penetrates through the first friction wheel and is fixed with the second friction wheel, a screw coaxial with the planet carrier is fixed at the lower end of the planet carrier, a sliding cylinder capable of sliding up and down but not rotating in the hollow cylinder is sleeved at the lower end of the screw, the sliding cylinder is in threaded connection with the screw, the lower end of the sliding cylinder is a piston head, and the piston head is driven by the sliding cylinder to;

the hollow cylinder outside cover be equipped with the rotary drum, install one way clutch between rotary drum and the hollow cylinder, there is the fly leaf of level form in the hollow cylinder outside, the rotary drum runs through the fly leaf, the fly leaf can only reciprocate and can not rotate, have a plurality of spiral helicine spiral grooves that are on the outer disc of rotary drum, have a plurality of protruding pieces with spiral groove one-to-one on the rotary drum, in the spiral groove that its corresponds is arranged in to the protruding piece, the fly leaf takes the protruding piece to move down and makes the rotary drum drive hollow cylinder rotate through spiral groove.

The invention has the advantages of ingenious structure, uniform injection dosage in the anesthetic injection process, uniform injection dosage before and after injection, convenient adjustment of injection dosage, smooth follow-up operation, wide adaptability, easy realization and convenient popularization.

Drawings

FIG. 1 is a front cross-sectional view of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.

Fig. 5 is a cross-sectional view taken along line D-D of fig. 1.

FIG. 6 is a schematic diagram of the transmission relationship of the present invention.

FIG. 7 is a schematic view of the structure of the drum and the grooves thereon in the present invention.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the injector hollow cylinder comprises a vertically placed injector hollow cylinder 1, a horizontal fixing plate 2 is arranged at the upper end of the hollow cylinder 1, a rectangular shell 3 is arranged above the fixing plate 2, a space is arranged between the fixing plate 2 and the shell 3, a first friction wheel 4 which is horizontal and can rotate is arranged in the shell 3, the diameter of the first friction wheel 4 is gradually reduced from bottom to top, a second friction wheel 5 is arranged on the upper side of the first friction wheel 4, the first friction wheel 4 and the second friction wheel 5 are symmetrically arranged up and down, worm wheels 6 which can rotate left and right are arranged on the left side and the right side in a cavity of the shell 3, a vertical and rotatable worm 7 is meshed on one side of the worm wheel 6 far away from the first friction wheel 4, a rotatable friction disc 8 is fixed on one side of the worm wheel 6 close to the first friction wheel 4, the worm wheel 6 can drive the friction disc 8 to swing up and down by taking the worm wheel 6 as the circle center, and the first friction wheel 4 can; a planetary gear mechanism is arranged in an interval between the fixed plate 2 and the shell 3, wherein the upper end of the gear ring 9 is provided with a hollow cylinder 10 coaxial with the gear ring, the upper end of the hollow cylinder 10 penetrates through the side wall of the shell 3 and is fixed with the first friction wheel 4, the upper end of a central shaft 11 of the sun wheel penetrates through the first friction wheel 4 and is fixed with the second friction wheel 5, the lower end of the planet carrier 12 is fixed with a screw 13 coaxial with the planet carrier, the lower end of the screw 13 is sleeved with a sliding cylinder 14 which can slide up and down in the hollow cylinder 1 but cannot rotate, the sliding cylinder 14 is in threaded connection with the screw 13, the lower end of the sliding cylinder 14 is provided with a piston head, and the rotation of the screw 13 can enable the sliding cylinder;

the outer side of the hollow cylinder 10 is sleeved with a rotary cylinder 15, a one-way clutch is installed between the rotary cylinder 15 and the hollow cylinder 10, a horizontal movable plate 16 is arranged on the outer side of the hollow cylinder 10, the rotary cylinder 15 penetrates through the movable plate 16, the movable plate 16 can only move up and down and can not rotate, a plurality of spiral grooves 17 are formed in the outer circular surface of the rotary cylinder 15, a plurality of protruding blocks 18 which are in one-to-one correspondence with the spiral grooves 17 are arranged on the rotary cylinder 15, the protruding blocks 18 are arranged in the corresponding spiral grooves 17, and the movable plate 16 drives the protruding blocks 18 to move downwards to enable the rotary cylinder 15 to drive the hollow cylinder 10 to rotate through the spiral.

In order to realize that the sliding cylinder 14 can only slide and can not rotate in the hollow cylinder 1, the section of the hollow cylinder 1 is in an oval or flat round shape, the edge of the piston head is tightly attached to the hollow cylinder 1, the piston head is fixedly connected with the sliding cylinder 14, and the piston head can only slide and can not rotate in the hollow cylinder 1.

In order to fix the housing 3 and to realize that the movable plate 16 can only move up and down, the outer side plate of the housing 3 is provided with an annular protrusion, the lower end of the annular protrusion is provided with a plurality of vertical upright posts 19, the lower end of the upright posts 19 penetrates through the movable plate 16 and is fixed with the fixed plate 2, the movable plate 16 can move up and down along the upright posts 19, and a tension spring is connected between the movable plate 16 and the annular protrusion.

In order to more accurately control the dose injected at each time and prevent relative rotation between the hollow cylinder 1 and the fixing plate 2, a flat plate 20 attached to the fixing plate 2 is fixed on the outer side of the upper end of the hollow cylinder 1, a plurality of positioning pins are arranged on the flat plate 20, a plurality of positioning holes corresponding to the positioning pins are arranged on the fixing plate 2, and the positioning pins are arranged in the positioning holes.

In order to mount the worm wheel 6, a fixing shaft 21 is inserted into the worm wheel 6 coaxially therewith, and an end of the fixing shaft 21 is fixed to the housing 3.

In order to install the friction disc 8, a cylinder 22 is fixed on one side of the worm wheel 6 close to the friction disc 8, the cylinder 22 is arranged along the radial direction of the worm wheel 6, a rotating shaft coaxial with the cylinder is fixed on the friction disc 8, the rotating shaft is inserted into the cylinder 22, and a bearing is installed between the rotating shaft and the friction disc 8.

In order to simultaneously control the swing angles of the two worm wheels 6 to be consistent, the upper end of the worm 7 is rotationally fixed with the side wall of the shell 3, a horizontal large gear 23 capable of rotating is arranged on the upper side plate of the shell 3, a small gear 24 meshed with the large gear 23 is arranged at the upper end of the worm 7, a rotating wheel 25 coaxial with the large gear 23 is arranged above the shell 3, the rotating wheel 25 and the large gear 23 are fixed together through a connecting shaft, a bearing is arranged between the connecting shaft and the side plate on the shell 3, and the rotating shaft rotates to drive the small gears 24 to rotate simultaneously through the large gear 23.

In order to keep the friction disc 8 in contact with the first friction wheel 4 and the second friction wheel 5 in the swinging process, the first friction wheel 4 and the second friction wheel 5 are similar to a cone, the outer edges of the longitudinal sections of the first friction wheel 4 and the second friction wheel 5 are in an arc shape, the first friction wheel 4 and the second friction wheel 5 are positioned in the same plane, the centers of arcs in the outer edge sections in the sections corresponding to each other up and down are overlapped, and the centers of the arcs are positioned on the axis of the fixed shaft 21; the outer circular surface of the friction disc 8 is attached to the outer circular surfaces of the first friction wheel 4 and the second friction wheel 5, and the outer circular surface of the friction disc 8 is similar to a cone.

In order to press the movable plate 16 conveniently and operate conveniently, a horizontal pressing plate 26 is arranged above the rectangular box, and the left end and the right end of the pressing plate 26 are fixed with the movable plate 16 through a plurality of vertical supporting rods 27.

It is worth noting that the mode of the device for the medicine to enter the hollow cylinder 1 is various, a special medicine adding port can be arranged at the lower end of the hollow cylinder 1, a simple one-way valve can be additionally arranged on the hollow cylinder 1, and the device focuses on the traditional mode for sucking the medicine; the friction disc 8 can change the transmission ratio between the first friction wheel 4 and the second friction wheel 5 along with the swinging of the worm wheel 6, the friction disc 8 is in contact with the first friction wheel 4 and the second friction wheel 5 and is not separated from the first friction wheel 4 and the second friction wheel 5, the transmission ratio between the gear ring 9 and the sun wheel can be changed, the final rotation number of the screw 13 and the downward displacement of the slide rod are influenced, and the medicine output amount after each pressing is influenced finally; in the device, the fixing plate 2 is only attached to the flat plate 20 at the upper end of the hollow cylinder 1, can be pulled and detached, and is positioned by a positioning pin and a positioning hole to prevent relative rotation; the outer edge of the planet carrier 12 can protrude a part, so that the operation during dosing is convenient; the projection 18 is not disengaged from the spiral groove 17.

In the initial state, the piston head is at the lowest part of the cylinder 22, the needle head is arranged on the nipple at the lower part of the empty cylinder 1, the empty cylinder 1 can be held by one hand, the flat plate 20 is pulled by the other hand, the anesthetic is sucked into the empty cylinder 1 by using negative pressure, after the process is finished, the flat plate 20 is completely separated from the fixed plate 2, then the empty cylinder 1 is held by one hand, the convex part at the outer edge of the planet carrier 12 is held by the other hand, the two rotate relatively, the position for holding the slide rod is basically unchanged and tends to be upward in the rotation, the screw 13 and the flat plate 20 gradually descend, during the process, the piston head can move upwards by a small amount and can not descend at all, when the flat plate 20 and the fixed plate 2 are close to each other, the whole device is inverted, the needle head faces upwards, the position of the positioning pin and the positioning hole are adjusted, then the fixed plate 2 is pushed to the flat plate 20 to be tightly attached, and simultaneously, at this time, normal injection is possible. When injecting, the needle is pierced, then the hollow cylinder 1 is kept still, the pressing plate 26 is pressed, the pressing plate 26 moves downwards, the movable plate 16 is driven by the supporting rod 27 to move downwards, the convex block 18 on the movable plate 16 slides in the spiral groove 17 to enable the rotary drum 15 to rotate, the rotary drum 15 rotates, the hollow cylinder 10 is driven by the one-way clutch to rotate, the hollow cylinder 10 drives the gear ring 9 to rotate and the first friction wheel 4, the first friction wheel 4 drives the second friction wheel 5 to rotate by the friction disc 8, the second friction wheel 5 drives the sun wheel to rotate by the central shaft 11, so that the gear ring 9 and the sun wheel are simultaneously input, the planet carrier 12 outputs, the planet carrier 12 drives the screw rod 13 to rotate, the slide rod drives the piston head to extrude downwards to inject, when the convex block 18 contacts the lower end of the groove 17, the pressing plate 26 is slowly loosened, the flat plate 20 drives the pressing plate 26 to restore upwards by the supporting rod 27 under the action of the tension spring, the one-way clutch on the drum 15 now idles and so on until the drug is exhausted.

In the above process, if there are bubbles in the hollow cylinder 1 after the fixing plate 2 is tightly attached to the plate 20, the needle should be kept upward, and the pressing plate 26 is pressed to press the piston head in the hollow cylinder 10 so that the bubbles are discharged from the needle at the upper end.

During the operation, different positions, different operations, different degree of depth tissue, different ages, different individuality, the composition of the narcotic drug that adopts is different, the dose of injection at every turn also needs the adjustment, during the adjustment, runner 25 of rotatory casing 3 upper end, runner 25 drives pinion 24 through gear wheel 23 and rotates, pinion 24 rotates and drives worm wheel 6 through worm 7 and rotates, worm wheel 6 rotates and drives friction disc 8 swing through drum 22, realize the change of drive ratio between first friction pulley 4 and the second friction pulley 5, namely, protruding piece 18 on dull and stereotyped 20 slides recess 17 lower extreme in-process by the recess 17 upper end and the number of turns of ring gear 9 pivoted is certain, on this basis, sun gear pivoted number of turns adjustable, finally make the number of turns of rotation of screw rod 13 adjustable, and then adjust the injection volume of every turn.

The invention has the outstanding advantages and remarkable progress that:

1. in the injection process, the invention can realize the control of consistent injection amount each time only by mechanically pressing the pressing plate 26, is convenient to operate, can realize continuous, multiple and quantitative injection, and has accurate and controllable liquid outlet amount.

2. According to the invention, the friction disc 8 is used for changing or adjusting the transmission ratio between the first friction wheel 4 and the second friction wheel 5, the movable plate 16 reciprocates once, so that the number of rotation turns of the gear ring 9 is fixed, the number of rotation turns of the sun wheel can be adjusted by adjusting the angle of the friction disc 8, finally, the downward movement distance of the piston head can be adjusted, and the medicine injection amount of each time can be adjusted.

Claims

1. An anesthesia quantitative injector is characterized by comprising an injector hollow cylinder (1) which is vertically placed, a horizontal fixing plate (2) is arranged at the upper end of the hollow cylinder (1), a rectangular shell (3) is arranged above the fixing plate (2), a gap is formed between the fixing plate (2) and the shell (3), a horizontal first friction wheel (4) capable of rotating is arranged in the shell (3), the diameter of the first friction wheel (4) is gradually reduced from bottom to top, a second friction wheel (5) is arranged on the upper side of the first friction wheel (4), the first friction wheel (4) and the second friction wheel (5) are symmetrically arranged up and down, worm wheels (6) capable of rotating left and right are arranged on the left side and the right side in a cavity of the shell (3), a vertical worm rod (7) capable of rotating is meshed with one side, far away from the first friction wheel (4), a friction disc (8) capable of rotating is fixed on one side, close to the first friction wheel (4), of the worm wheel (6), the worm wheel (6) can drive the friction disc (8) to swing up and down by taking the worm wheel (6) as a circle center, and the first friction wheel (4) can drive the second friction wheel (5) to rotate by rotating the friction wheel; a planetary gear mechanism is arranged in a gap between the fixed plate (2) and the shell (3), wherein a hollow cylinder (10) coaxial with the hollow cylinder is arranged at the upper end of the gear ring (9), the upper end of the hollow cylinder (10) penetrates through the side wall of the shell (3) and is fixed with the first friction wheel (4), the upper end of a central shaft (11) of the sun wheel penetrates through the first friction wheel (4) and is fixed with the second friction wheel (5), a screw rod (13) coaxial with the planet carrier (12) is fixed at the lower end of the planet carrier (12), a sliding cylinder (14) which can slide up and down in the hollow cylinder (1) but cannot rotate is sleeved at the lower end of the screw rod (13), the sliding cylinder (14) is in threaded connection with the screw rod (13), the lower end of the sliding cylinder (14) is a piston head, and the rotation of the screw rod (13) can enable the sliding cylinder (;

hollow cylinder (10) outside cover be equipped with rotary drum (15), install one way clutch between rotary drum (15) and hollow cylinder (10), there is horizontal form fly leaf (16) hollow cylinder (10) outside, rotary drum (15) run through fly leaf (16), fly leaf (16) can only reciprocate and can not rotate, have a plurality of spiral helicine spiral grooves (17) on rotary drum (15) excircle face, have a plurality of protruding pieces (18) with spiral grooves (17) one-to-one on rotary drum (15), protruding piece (18) are arranged in its spiral groove (17) that correspond, fly leaf (16) are taken protruding piece (18) to move down and are made rotary drum (15) drive hollow cylinder (10) and rotate through spiral groove (17).

2. The anesthetic dosing syringe as claimed in claim 1, wherein the hollow cylinder (1) has an oval or flat-round cross-section, the edge of the piston head is tightly attached to the hollow cylinder, the piston head is fixedly connected with the sliding cylinder (114), and the piston head can only slide but cannot rotate in the hollow cylinder (11).

3. The quantitative anesthesia column injection device of claim 1, wherein an annular protrusion is formed on the outer side plate of the housing (13), a plurality of vertical rods (19) are arranged at the lower end of the annular protrusion, the lower end of each vertical rod (19) penetrates through the movable plate (16) and is fixed with the fixed plate (2), the movable plate (16) can move up and down along the vertical rods (19), and a tension spring is connected between the movable plate (16) and the annular protrusion.

4. The quantitative anesthesia injector according to claim 1, wherein a plate (20) attached to the fixing plate (2) is fixed to the outer side of the upper end of the hollow cylinder (1), the plate (20) is provided with a plurality of positioning pins, the fixing plate (2) is provided with a plurality of positioning holes corresponding to the positioning pins, and the positioning pins are disposed in the positioning holes.

5. An anesthetic dosing syringe as claimed in claim 1, characterized in that a fixing shaft (21) is coaxially arranged on said worm wheel (6) in a penetrating manner, and the end of said fixing shaft (21) is fixed to said housing (3).

6. An anesthetic dosing syringe as claimed in claim 1, characterized in that a cylinder (22) is fixed to the worm wheel (6) on a side thereof adjacent to the friction disc (8), the cylinder (22) is arranged in a radial direction of the worm wheel (6), a rotating shaft coaxial with the friction disc (8) is fixed to the friction disc (8), the rotating shaft is inserted into the cylinder (22), and a bearing is installed between the rotating shaft and the friction disc (8).

7. The quantitative anesthesia injector of claim 1, wherein the upper end of the worm (7) is rotatably fixed with the side wall of the housing (3), the upper side plate of the housing (3) is provided with a horizontal large gear (23) capable of rotating, the upper end of the worm (7) is provided with a small gear (24) meshed with the large gear (23), a rotating wheel (25) coaxial with the large gear (23) is arranged above the housing (3), the rotating wheel (25) is fixed with the large gear (23) through a connecting shaft, a bearing is arranged between the connecting shaft and the upper side plate of the housing (3), and the rotating shaft rotates to drive the small gears (24) to rotate simultaneously through the large gear (23).

8. The anesthetic dosing syringe as claimed in claim 1, wherein the first friction wheel (4) and the second friction wheel (5) are similar to a cone, the outer edges of the longitudinal sections of the first friction wheel (4) and the second friction wheel (5) are arc-shaped, the first friction wheel (4) and the second friction wheel (5) are in the same plane, the centers of the arcs in the outer edge sections in the sections corresponding up and down are overlapped, and the centers of the arcs are positioned on the axis of the fixed shaft (21); the outer circular surfaces of the friction discs (8) are respectively attached to the outer circular surfaces of the first friction wheel (4) and the second friction wheel (5), and the outer circular surfaces of the friction discs (8) are similar to a cone.

9. The anesthetic dosing syringe as claimed in claim 1, wherein a horizontal pressing plate (26) is provided above the rectangular box, and the left and right ends of the pressing plate (26) are fixed to the movable plate (16) via a plurality of vertical support rods (27).