WO2019024066A1

WO2019024066A1 - Drug-dissolving device

Info

Publication number: WO2019024066A1
Application number: PCT/CN2017/095932
Authority: WO
Inventors: 张兢
Original assignee: 安徽迈菲思医疗器械有限公司
Priority date: 2017-08-03
Filing date: 2017-08-04
Publication date: 2019-02-07

Abstract

Provided is a drug-dissolving device, comprising a drug-dissolving cylinder (1), a piston push rod (2) and a fixing mechanism (3) for the drug-dissolving cylinder, wherein the drug-dissolving cylinder (1) is in sliding fit with the piston push rod (2); the drug-dissolving cylinder (1) is fixedly connected to the fixing mechanism (3) for the drug-dissolving cylinder by means of a clamping structure; a toothed face on one side of the piston push rod (2) meshes with a gear (34) in the fixing mechanism (3) for the drug-dissolving cylinder, and at the same time, the gear (34) meshes with a toothed face on one side of an auxiliary push rod (33) of the fixing mechanism (3) for the drug-dissolving cylinder; the fixing mechanism (3) for the drug-dissolving cylinder comprises an upper cover (31), a lower cover (32), the auxiliary push rod (33), the gear (34) and a guide sliding block (35); the auxiliary push rod (33) is located in a cavity formed by the upper cover (31) and the lower cover (32), and the gear (34) is in rotating fit with a fixing hole (325) of the lower cover (32) by means of a bearing; and when in use, the auxiliary push rod (33) is pushed and pulled by the guide sliding block (35), then, the gear (34) is driven to rotate, and the gear (34) drives the piston push rod (2) to move in an opposite direction. The drug-dissolving device has low preparation costs, and can dispense a precise amount of a drug by means of single-handed operation.

Description

a drug dissolver

Technical field

The invention discloses a solvent dissolving device with simple structure and labor saving, belonging to the technical field of medical instruments.

Background technique

As we all know, the working principle of the syringe is: when the syringe is pumping liquid, because the internal pressure becomes smaller and the external pressure is strong, the pressure difference is formed to hydraulically push the medicine into the syringe; when the needle is injected, the liquid is injected by the thrust. The manpower required to extract and inject the drug solution is generally provided by the hand. Because the hand strength of female medical staff is weak, the current syringe will be more difficult if it requires one-handed operation, and often the measurement liquid is inaccurate due to poor control.

Infusion is a widely used treatment. It is often necessary to prepare some liquids before infusion. At present, the preparation of powders and medicaments is generally done by syringe. The specific operation is to insert the syringe into the liquid bottle and take a small amount. The liquid medicine is then pulled out of the syringe and inserted into the powder bottle, and the medicine liquid is injected into the powder bottle. After the medicine powder and the medicine liquid are completely dissolved, the mixture is extracted and injected into the infusion bottle. During the dispensing process, the medicine bottle is sealed. Structure, so a certain negative pressure difference will occur during operation, making the operation laborious.

Summary of the invention

The invention discloses a solvent dissolving device which is simple in structure, single-handed operation, small in force and accurate in dispensing amount.

In order to achieve the above technical purpose, it is mainly realized by the following technical solutions:

The drug dissolver comprises a solvent cartridge, a piston push rod and a solvent cartridge fixing mechanism; the piston push rod is slidably engaged with the solvent cartridge, and the drug cartridge is fixedly connected to the solvent cartridge fixing mechanism by the clamping structure.

One end of the solvent cartridge is provided with a carding member integrally formed with the solvent cartridge; and one side of the piston push rod is provided with a piston pusher tooth surface.

The cartridge fixing mechanism comprises an upper cover, a lower cover, an auxiliary push rod, a gear and a guiding slider; the upper cover is fixedly mounted with the lower cover, and the upper cover and the lower cover are butted together to form an empty space for accommodating the auxiliary push rod The cavity and the guide slider are respectively slidably engaged with the upper cover, the lower cover and the auxiliary push rod;

The upper cover is provided with a first accommodating cavity, a fixing column, an upper cover finger baffle and a first boss; the lower cover is provided with a second accommodating cavity, a curved plate, a card board, and an L-shaped plate a fixing hole, a lower cover finger baffle and a second boss; one end of the auxiliary push rod is provided with a third boss, and one side of the auxiliary push rod is provided with an auxiliary pusher tooth surface.

The gear is rotatably engaged with a fixing hole close to the second boss through a bearing for fixing a cylinder of the drug cartridge, the card for fitting a card, the upper cover finger The plate and the lower cover finger baffle are symmetrically distributed along the drug cartridge fixing mechanism.

The auxiliary pusher tooth face meshes with a gear that meshes with the piston pusher tooth face.

Specifically, the other end of the solvent cartridge is provided with an engaging portion that communicates with the inner cavity of the drug solution cartridge.

In particular, the L-shaped pallet is used to place a piston pusher.

Specifically, the guide sliders are slidably engaged with the first boss, the second boss and the third boss, respectively.

The first accommodating cavity (311) and the second accommodating cavity (321) form a cavity for accommodating the auxiliary push rod (33), and the fixing post (312) is fixedly mounted with the fixing hole (325).

Preferably, an elastic fastening device (315) is further disposed on the same side of the upper cover and the lower cover, so that the upper cover and the lower cover are stably fixed together.

The lower cover finger baffle is integrally formed with the card abutment card, and an end surface of the lower cover finger baffle is flush with an end surface of the card abutment card.

Specifically, the volume of the drug-solving cartridge of the present invention is 10 ml, 20 ml, 50 ml or 100 ml, and is even designed to a desired volume according to actual needs.

Further, the barrel of the drug cartridge is a cylindrical, rectangular parallelepiped or other three-dimensional cavity structure. .

Specifically, the solvent dissolver of the present invention is prepared from one or more of vinyl chloride, polyethylene, polypropylene, polystyrene, polycarbonate, ABS, polyurethane, polyamide or polysulfone or polyetheretherketone in any ratio. Made.

The method for using the drug dissolving device of the present invention is characterized in that: the two fingers are used to fasten the upper cover finger baffle and the lower cover finger baffle, and the guiding slider moves in the opposite direction of the arrow, when the first boss and the second boss just Disengaging from the guide slider, the guide slider is pulled away from the fixing mechanism of the solvent cartridge, the guide slider drives the auxiliary push rod to move in the same direction, the auxiliary push rod drives the gear to rotate, and then the gear drives the piston push rod to move in the opposite direction; The slider moves toward the fixing mechanism of the solvent cartridge, and the auxiliary push rod drives the gear to rotate, and then the gear drives the piston push rod to move in the opposite direction.

Beneficial effect

The solvent cartridge and the carding member of the solvent dissolving device of the invention are integrally formed, and the upper and lower covers of the drug cartridge fixing member are fixed by the fixing hole and the fixing column. The auxiliary pusher is placed in the cavity of the upper and lower covers and is slidable. Many of the components of the present invention are integrally formed, so that the cost of preparing the drug dissolver is low; at the same time, the material is made of medical grade plastic to prevent pollution.

Since the card-receiving member of the drug-dissolving cartridge is fixed in the cartridge of the drug-dissolving cartridge, the dissolving cartridge does not randomly displace, the tooth surface of the piston push rod and the auxiliary push rod and the gear are accurately set, and the medicine taken by the dissolving device is taken. The liquid is very precise. At the same time, due to the engagement of the piston, the piston push rod does not move freely along the inner cavity of the solvent cartridge to avoid leakage of the liquid.

The lower cover pusher of the drug cartridge fixing mechanism is flush with one end surface of the card offset card, so that the one hand and the two fingers can buckle the upper cover pusher and the lower cover pusher and the card offset card, thereby realizing the fixed drug cartridge . Since the gear is under the action, the auxiliary push rod drives the gear and the gear to drive the piston push rod, and the small amount of force can be used to accurately measure the solvent cartridge. The drug can be accurately measured with one hand using a very small force. The drug dissolver of the invention has good generalization.

DRAWINGS

Figure 1 is a perspective view of the drug dissolver of the present invention

Figure 2 is a perspective view of the dissolving device of the present invention

Figure 3 is a perspective view of the fixing mechanism of the drug cartridge of the present invention

Figure 4 is a perspective view of the fixing mechanism of the drug cartridge of the present invention

Figure 5 is a top view of the fixing tube fixing mechanism of the present invention

Figure 6 is a side view of the fixing mechanism of the drug cartridge of the present invention

Figure 7 is a bottom view of the dissolving cartridge fixing mechanism of the present invention

Figure 8 is a split view of the fixing mechanism of the drug cartridge of the present invention

Figure 9 is a top view of the dissolving cartridge fixing mechanism of the present invention

Reference numeral

1-dissolve cartridge, 11-barrel, 12-card offset

2-piston push rod

3-assisted push rod, 31-top cover, 32-lower cover, 33-assisted push rod, 34-gear, 35-guide slide

311-first accommodating cavity, 312-fixed column, 313-top cover finger baffle, 314-first boss, 315-elastic buckle device

321-Second accommodating cavity, 322-arc plate, 323-card affixing plate, 324-trapezoidal plate, 325-fixing hole, 326-lower cover finger baffle, 327-second boss

331-third boss

Detailed ways

The technical solutions of the present invention are described below by using specific embodiments, and the specific component names and assembly methods involved are not limited to the technical solutions of the present invention; any improvement made by those skilled in the art based on the technical solutions belongs to The technical protection scope of the present invention.

Example 1

As shown in Figures 1 to 9, the solvent dissolver includes a solvent cartridge (1), a piston pusher (2), and a drug cartridge fixing mechanism (3). The solvent cartridge (1) is slidably engaged with the piston push rod (2), and the solvent cartridge (1) is fixedly connected to the solvent cartridge fixing mechanism (3) through the clamping structure; the tooth surface of the piston push rod (2) side is The gear (34) in the inside of the solvent cartridge is engaged, and the gear (34) is meshed with the tooth surface on the side of the auxiliary push rod (33) of the cartridge fixing mechanism. One end of the solvent cartridge (1) is provided with a latching member (12) integrally formed with the solvent cartridge; and one side of the piston pusher (2) is provided with a piston pusher tooth surface.

The cartridge fixing mechanism (3) includes an upper cover (31), a lower cover (32), an auxiliary push rod (33), a gear (34), and a guide slider (35); the upper cover (31) and the lower cover (32) fixedly mounted together, the upper cover (31) and the lower cover (32) are butted together to form a cavity for accommodating the auxiliary push rod, and the guide slider is respectively associated with the upper cover (31), the lower cover (32) and the auxiliary The push rod (33) is slidably fitted.

The upper cover (31) is provided with a first accommodating cavity (311), a fixing post (312), an upper cover finger baffle (313) and a first boss (314); and the lower cover (32) is provided a second accommodating cavity (321), a curved plate (322), a card (323), an L-shaped plate (324), a fixing hole (325), a lower cover finger baffle (326), and a second boss (327); one end of the auxiliary push rod (33) is provided with a third boss (331), and one side of the auxiliary push rod (33) is provided with an auxiliary pusher tooth surface.

The gear (34) is rotatably coupled to a fixing hole (325) of the second boss (327) for fixing a cylinder of the drug cartridge, the card plate (323) For the fitting card holder (12), the upper cover finger flap (313) and the lower cover finger flap (326) are symmetrically distributed along the drug cartridge fixing mechanism.

The tooth surface of the auxiliary push rod (33) meshes with a gear (34) that meshes with the tooth surface of the piston push rod (2).

Specifically, the other end of the solvent cartridge is provided with an engaging portion (11), and the engaging portion is in communication with the inner cavity of the solvent cartridge. The connecting portion of the drug-dissolving cartridge can be directly connected to the infusion catheter or the external container, so that the drug solution prepared by the drug dissolver can be directly applied.

The L-shaped pallet (324) is used to position the piston pusher (2).

Specifically, the guide sliders (35) are slidably engaged with the first bosses (314), the second bosses (327), and the third bosses (331), respectively.

Specifically, the first accommodating cavity (311) and the second accommodating cavity (321) form a cavity for accommodating the auxiliary push rod (33), and the fixing post (312) is fixedly mounted with the fixing hole (325).

An elastic fastening device (315) is further disposed on the same side of the upper cover and the lower cover, so that the upper cover and the lower cover are stably fixed together. Elastic fastening device (or elastic button body), the device is made of rubber material, which is easy to bend and deform, increases the fit of the solvent cartridge and the fixed structure, increases the friction, and is easy to assemble and fix.

Specifically, the lower cover finger baffle (326) is integrally formed with the card abutment card (323), and an end surface of the lower cover finger baffle (326) is flush with an end surface of the card abutment card (323). . As can be seen from Fig. 3, the finger baffle (326) epitaxially formed on the lower cover is integrally formed with the card abutment card (324). It can be clearly seen from Fig. 7 that one end surface of the lower cover finger baffle (326) is flush with one end surface of the card abutment card (324), so that one hand holds the contact area of the finger baffle (lower) The cover finger baffle and the card offset plate are larger to achieve a labor-saving effect.

One side of the guide slider (35) of the solvent dissolver of the embodiment is provided with a tooth edge and an arrow mark, and a tooth edge is provided on one side of the guide slider to achieve an anti-slip effect when sliding.

It can be seen from FIG. 3, FIG. 7 and FIG. 8 that the same end of the upper cover (31) and the lower cover (32) are provided with an outwardly extending first boss (314) and a second boss ( 327), at the same time, one end of the auxiliary push rod (33) is also provided with a third boss (331). The guide slider (35) is in sliding engagement with the third boss (331), the first boss (312) and the second boss. As is clear from Fig. 3, the lower surface of the first boss (314) is flush with the upper surface of the second boss (327), and the first boss (314) is identical to the second boss (327). The side is flush with the corresponding side of the third boss (331) of the auxiliary pusher, so that the guide slider can slide smoothly in the direction of the arrow or in the opposite direction. When the sliding guide slider (35) slides away from the solvent cartridge, the first boss (314) and the second boss (327) are just exposed, and the guide slider (35) is buckled to the third boss (331). ) The auxiliary push rod (33) can also be driven to pull and pull in a direction away from the cartridge fixing mechanism.

The volume of the drug-solving cartridge of this embodiment is 50 ml in a cylindrical shape, and is prepared from polyethylene and polypropylene. On one side of the auxiliary pusher (3) of the present embodiment, a volume scale is also indicated, and the minimum scale is 0.5 ml.

When 5 ml of the solution A and 7 ml of the drug solution B were mixed in 30 ml of 0.04% physiological saline, the mixed drug solution was poured into an infusion catheter and added to 300 ml of the injection solution. Slide the guide slider (35) in the direction opposite to the direction indicated by the arrow on the side of the auxiliary push rod. When the first boss (314) and the second boss (327) are just separated from the guide slider (35), the guide slider (35) Pulling away from the cartridge fixing mechanism (3), while the auxiliary pusher (33) moves outward, and stops pulling the guide slider when the scale of the auxiliary pusher is 42 ml. The adapter (11) at one end of the drug cartridge is then connected to a container containing solution A. When the solvent cartridge connection portion communicates with the container containing A, the guide slider (35) is pushed toward the solvent cartridge fixing mechanism, and then the auxiliary push rod (3) is pushed toward the solvent cartridge fixing mechanism to push 7 ml ( At this time, the scale shows 35 ml) - at this time, 7 ml of the drug solution A is contained in the drug cartridge. Then, after the connecting portion of the solvent cartridge is connected to the container containing the liquid medicine B, the guide slider (35) is pushed toward the fixing mechanism (3) until the scale of the auxiliary push rod (33) is displayed as 30 ml. The dissolved cartridge contains 7ml of the liquid A and 5ml of the liquid B, and the medical syringe cap is used to cover the connecting portion of the solvent tube, and the solvent is shaken by the wrist to make the two liquids evenly mixed; The container is connected to 0.04% saline, and finally the guide slider (35) is pushed again until the auxiliary pusher scale shows the origin (0 ml). At this time, the drug cartridge contains 7ml of liquid A, 5ml of liquid B and 30ml. 0.04% (w/w) of physiological saline was shaken to make it thoroughly mixed. The drug dissolver of the present invention can accurately measure different drugs, mix them uniformly, and then put them into use. In this embodiment, the mixed 42 ml of the drug solution can be retreated into the 300 ml injection solution through the junction portion by dissolution.

Claims

A drug dissolver, characterized in that the solvent dissolver comprises a solvent cartridge (1), a piston push rod (2) and a drug cartridge fixing mechanism (3); the piston push rod (2) and the drug cartridge ( 1) sliding fit, the solvent cartridge (1) is fixedly connected to the solvent cartridge fixing mechanism (3) through the clamping structure;

One end of the solvent cartridge (1) is provided with a carding member (12) integrally formed with the solvent cartridge; and one side of the piston push rod (2) is provided with a piston pusher tooth surface;

The cartridge fixing mechanism (3) includes an upper cover (31), a lower cover (32), an auxiliary push rod (33), a gear (34), and a guide slider (35); the upper cover (31) and the lower cover (32) fixedly mounted together, the upper cover (31) and the lower cover (32) are butted together to form a cavity for accommodating the auxiliary push rod, and the guide slider is respectively associated with the upper cover (31), the lower cover (32) and the auxiliary Push rod (33) sliding fit;

The upper cover (31) is provided with a first accommodating cavity (311), a fixing post (312), an upper cover finger baffle (313) and a first boss (314); and the lower cover (32) is provided a second accommodating cavity (321), a curved plate (322), a card (323), an L-shaped plate (324), a fixing hole (325), a lower cover finger baffle (326), and a second boss (327); one end of the auxiliary push rod (33) is provided with a third boss (331), and one side of the auxiliary push rod (33) is provided with an auxiliary pusher tooth surface;

The gear (34) is rotationally coupled to a fixing hole (325) of the second boss (327) for fixing a cylinder of the solvent cartridge (1) through a bearing, the card The plate (323) is used for fitting the card retaining member (12), and the upper cover finger baffle (313) and the lower cover finger baffle (326) are symmetrically distributed along the solvent cartridge fixing mechanism (3);

The tooth surface of the auxiliary push rod (33) meshes with a gear (34) that meshes with the tooth surface of the piston push rod (2).
The drug concentrator according to claim 1, characterized in that the other end of the solvent cartridge is provided with an engaging portion (11) communicating with the inner cavity of the drug solution cartridge.
A drug concentrator according to claim 1, characterized in that said L-shaped plate (324) is used for placing a piston pusher (2).
The solvent device according to claim 1, wherein the guide slider (35) is slidably engaged with the first boss (314), the second boss (327) and the third boss (331), respectively. .
The drug solvator according to claim 1, wherein the first accommodating cavity (311) and the second accommodating cavity (321) form a cavity for accommodating the auxiliary push rod (33), the fixing column (312) Fixedly mounted to the fixing hole (325).
The solvent device according to claim 1, wherein the lower cover finger baffle (326) is integrally formed with the card abutment card (323), and an end surface of the lower cover finger baffle (326) and the card are formed. One end surface of the resisting card board (323) is flush, and an elastic fastening device (315) is further disposed on the same side of the upper cover (31) and the lower cover (32) to fix the upper cover and the lower cover.
The drug solvator according to claim 1, characterized in that the volume of the solvent cartridge (1) is 10 ml, 20 ml, 50 ml or 100 ml, and the barrel of the drug cartridge is cylindrical or rectangular parallelepiped.
The medicinal device according to claim 1, wherein the solvent is made of vinyl chloride, polyethylene, polypropylene, polystyrene, polycarbonate, ABS, polyurethane, polyamide or polysulfone or polyether. One or more of the ether ketones are prepared in any ratio.
The method of using the medicinal device according to any one of claims 1 to 8, characterized in that the upper cover finger baffle (313) and the lower cover finger baffle (326) are fastened by two fingers, and the guide slider (35) is guided. Moving in the opposite direction of the arrow, when the first boss (314) and the second boss (327) are just separated from the guide slider (35), the guide slider (35) is pulled away from the cartridge fixing mechanism, and is guided to slide. The block (35) drives the auxiliary push rod (33) to move in the same direction, the auxiliary push rod drives the gear (34) to rotate, and then the gear (34) drives the piston push rod (2) to move in the opposite direction; when the slide guide slider (35) Moving toward the solvent cartridge fixing mechanism, the auxiliary push rod (33) drives the gear (34) to rotate, and then the gear (34) drives the piston push rod (2) to move in the opposite direction.