CN210644599U

CN210644599U - Liquid medicine transfer device and set thereof

Info

Publication number: CN210644599U
Application number: CN201920798975.1U
Authority: CN
Inventors: 陶亮; 孙媛媛; 何晏; 云琦
Original assignee: Tefeng Pharmaceutical Co ltd
Current assignee: Tefeng Pharmaceutical Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-06-02
Anticipated expiration: 2029-05-30

Abstract

The utility model provides a liquid medicine translator, including translator body, translator push rod and liquid medicine transfer needle, the translator push rod is located the inside of translator body, just the one end of translator body is fixed with liquid medicine transfer needle, the internal diameter of liquid medicine transfer needle is 0.32mm-0.60mm, just the needle point angle of liquid medicine transfer needle is 8-15. Also provided is a medical fluid transfer kit comprising a medical fluid transfer device, a vial containing a chloral hydrate concentrate and a vial containing a chloral hydrate diluent, wherein the medical fluid transfer device is adapted to access the vial containing the chloral hydrate concentrate for transferring the chloral hydrate concentrate to the vial containing the chloral hydrate diluent. The utility model discloses a liquid medicine translator and suit simple structure thereof is convenient to use clinically, and unique liquid medicine transfer needle design has guaranteed that it can absorb high viscosity chloral hydrate smoothly.

Description

Liquid medicine transfer device and set thereof

Technical Field

The utility model relates to the field of medical equipment, concretely relates to liquid medicine translator that shifts is carried out chloral hydrate oral liquid and suit thereof. More particularly, the present invention relates to a medical fluid transfer device and kit for oral administration of chloral hydrate to human subjects, particularly to children subjects.

Background

Diagnosis and treatment of childhood disease often requires a variety of medical examinations such as nuclear magnetic resonance, CT, electrocardiogram, and dental examinations. However, children have lower compliance during diagnosis and treatment than adults, and in severe cases, normal progress of diagnosis and treatment will be affected. Therefore, prior to some diagnosis and treatment, it is desirable to administer sedative/hypnotic agents to children to ensure that the diagnosis and treatment is successful.

Chloral hydrate is used as a sedative/hypnotic agent for children in many countries such as the europe and the america. One of the currently common forms of chloral hydrate administration in clinical practice at home and abroad is chloral hydrate oral solution. The chloral hydrate oral solution has the advantages of quick response, good effect and convenient administration. One of the chloral hydrate oral solutions which is clinically seen at home and abroad is a prepared chloral hydrate oral solution, namely the chloral hydrate oral solution which can be directly orally administered to children.

For example, chinese utility model patent CN201621427756.5 discloses a medicine feeder for feeding and applying chloral hydrate solution, which comprises a medicine storage cylinder, a drawing rod, a piston, a medicine feeding tube and a needle tube, wherein the medicine feeding tube is fixed on the upper end of the medicine storage cylinder. When in use, the needle tube is used for extracting the liquid medicine, and the medicine feeding rod can be pushed to feed medicine according to the weight of the child patient. However, chloral hydrate preparations have poor stability, and solutions prepared in advance are easily degraded.

Another visible method in clinical practice at home and abroad is that the chloral hydrate oral preparation is preserved in the form of concentrated solution and then diluted according to a proper proportion when in use. However, since the chloral hydrate concentrate has a high viscosity, it is often difficult to extract a proper amount of chloral hydrate concentrate during dilution, which causes great inconvenience in use.

For the above reasons, there is still a need to develop a chemical liquid transferring device and a kit thereof, which have simple structure and can conveniently and rapidly transfer chloral hydrate concentrated liquid.

SUMMERY OF THE UTILITY MODEL

Technical problem

Based on lack the device that is applicable to fast and conveniently shift chloral hydrate concentrate clinically at present, the utility model provides a liquid medicine translator and suit thereof.

Technical scheme

On one hand, the utility model provides a liquid medicine transfer device, which comprises a transfer device tube body, a transfer device push rod and a liquid medicine transfer needle, wherein the transfer device push rod is positioned inside the transfer device tube body, and the liquid medicine transfer needle is fixed at one end of the transfer device tube body,

the inner diameter of the liquid medicine transfer needle is 0.32mm-0.60mm, and the needle tip angle of the liquid medicine transfer needle is 8-15 degrees.

In one embodiment, the inner diameter of the liquid medicine transfer needle is 0.46mm, and the needle tip angle is 11.3 °.

In one embodiment, the total axial length of the portion of the medical fluid transfer needle extending out of the translator tube is 4.9mm to 9.1mm, and the axial length of the needle tip is 2.5mm to 4.6 mm.

In one embodiment, the total axial length of the portion of the medical fluid transfer needle protruding out of the translator tube is 7mm, and the axial length of the needle tip is 3.5 mm.

In one embodiment, the medical fluid transfer needle has an outer diameter of 0.4mm to 1.2 mm.

In one embodiment, the medical fluid transfer needle has an outer diameter of 0.7 mm.

In one embodiment, the inner diameter of the medical fluid transfer needle is 0.46mm, the needle tip angle is 11.3 °, and the axial length of the needle tip is 3.5 mm.

In one embodiment, the medical fluid transfer device further comprises a transfer device pushrod protective sheath, and/or a medical fluid transfer needle protective sheath.

In one embodiment, the transfer tube defines a volume to hold between 0.4ml and 1.4ml of medical fluid.

In another aspect, the present invention provides a medical fluid transfer kit, comprising a medical fluid transfer device according to any one of the preceding aspects, a vial containing chloral hydrate concentrate and a vial containing chloral hydrate diluent, wherein the medical fluid transfer device is adapted to access the vial containing chloral hydrate concentrate so as to transfer chloral hydrate concentrate to the vial containing chloral hydrate diluent.

Advantageous effects

The liquid medicine transfer device of the utility model has simple structure and is convenient for industrial production. Moreover, the liquid medicine transfer needle on the liquid medicine transfer device of the utility model has the unique design of large inclined plane, large angle, wide inner diameter and short length, which ensures that the liquid medicine transfer needle can conveniently and rapidly absorb the high-viscosity chloral hydrate. The liquid medicine transfer set of the utility model is also very suitable for the preservation and the transportation of the chloral hydrate medicine and the clinical oral administration of the chloral hydrate medicine.

Drawings

Fig. 1 is a schematic sectional view of the liquid medicine transfer device of the present invention.

fig. 2 α and 2b show α sectional view (fig. 2 α) and an enlarged view (fig. 2b) of α needle portion of the liquid medicine transfer needle according to the present invention, respectively, wherein α represents α needle point angle, α represents an axial length of the needle point, b1 represents an inner diameter of the liquid medicine transfer needle, b2 represents an outer diameter of the liquid medicine transfer needle, h represents α total axial length of the liquid medicine transfer needle protruding out of the transfer device tube body, and c represents α bevel length of the needle point.

Fig. 3 is a schematic sectional view of a transfer device push rod of the medical fluid transfer device of the present invention.

Fig. 4 is a schematic view of the overall structure of the liquid medicine transfer set of the present invention.

Fig. 5a, 5b, 5c and 5d are schematic views of the using status of the liquid medicine transferring set of the present invention, including the liquid medicine sucking status (fig. 5a), the liquid medicine transferring status (fig. 5b), the liquid medicine mixing status (fig. 5c) and the status before oral administration (fig. 5 d).

Reference numerals:

1 a diverter tube; 2a shifter push rod; 2-1, a push rod bottom support; 2-2 push rod body; 2-3 piston fixing part; 2-4 pistons; 3 liquid medicine transferring needle; 4 protecting sleeve for liquid medicine transferring needle; and 5a diverter push rod protective sheath.

Detailed Description

Exemplary embodiments will be described in more detail below with reference to the accompanying drawings. The drawings are intended to illustrate, but not to limit the invention. In the drawings, the size of the reagent strip portions and their relative proportions are exaggerated for clarity of illustration.

In the context of the present invention, the numerical points themselves and the two endpoints of the numerical ranges thereof both refer to intervals of precision which the skilled person will understand still ensure the technical effect of the characteristic referred to. The term generally refers to a deviation of ± 20%, preferably ± 15%, more preferably ± 10%, more preferably ± 5%, more preferably ± 2%, and even more preferably ± 1% of the numerical value referred to.

As shown in fig. 1, the liquid medicine transfer device includes a transfer device tube 1, a transfer device push rod 2 and a liquid medicine transfer needle 3, wherein the transfer device push rod 2 is located inside the transfer device tube 1, and the liquid medicine transfer needle 3 is fixed at one end of the transfer device tube 1. The medical fluid transfer device may further include a medical fluid transfer needle protective sheath 4 and/or a transfer device pushrod protective sheath 5.

The whole body of the transfer device tube body 1 is cylindrical, and the front part fixed with the liquid medicine transfer needle 3 gradually shrinks. In one embodiment, the front portion of the diverter tube has a cylindrical front portion with a gradually decreasing tube radius. To increase the strength of the front portion of the diverter tube, the front portion of the diverter tube may be provided with one or more reinforcing ribs (not shown) on the side walls. In one embodiment, the front of the diverter tube has 3 vertically oriented reinforcing ribs on the side walls.

In one embodiment, the diverter tube has a height of 80-100 mm. In one embodiment, the diverter tube height is about 85-95 mm. In one embodiment, the diverter tube height is about 90 ± 2 mm. In one embodiment, the diverter tube is cylindrical with a base radius of 2-5 mm. In one embodiment, the diverter tube is cylindrical with a bottom radius of about 4 mm.

As shown in fig. 1, the front end and the rear end of the transfer tube 1 are opened, a medical fluid transfer needle 3 is fixed to the front end of the transfer tube 1, and the rear end of the transfer tube 1 can be inserted into a transfer pusher 2.

The transfer set body 1 may have a sufficient volume to accommodate one or more administrations of the drug. In one embodiment, the transfer tube defines a volume containing 0.4-1.4ml of medical fluid. In one embodiment, the transfer tube defines a volume containing 1ml of medical fluid. In one embodiment, the medical fluid is chloral hydrate.

The transfer set body 1 may be made of a medical material. The medical material includes various materials that do not cause discomfort to the human body, including but not limited to polyethylene, polypropylene, polyvinyl chloride, and the like. In one embodiment, the diverter tube is made of polypropylene.

The side wall of the diverter body 1 may further comprise one or more boost portions. The shape and position of the pushing aid portion are not particularly limited as long as they can facilitate pushing in and pulling out of the pusher of the diverter. In one embodiment, the boost portion is disposed in a surrounding and protruding manner at an intermediate position of the sidewall of the diverter tube. In one embodiment, the boost portion is disposed in a surrounding and protruding manner at a bottom position of the sidewall of the diverter tube.

The medical fluid transfer device may further comprise a medical fluid transfer needle protective sheath 4. The liquid medicine transfer needle protecting sleeve 4 can be connected with the front end of the transfer device tube body 1 in a buckling mode. In one embodiment, the medical fluid transfer device further comprises a medical fluid transfer needle protective sheath. The design of liquid medicine transfer needle protective sheath can be avoided the utility model discloses a liquid medicine transfer needle is impaired, when dosing relevant operation to children, makes it safer in using simultaneously. Simultaneously, this confined liquid medicine shifts needle protective sheath and has also improved the utility model discloses a liquid medicine shifts the medical clean grade of whole of ware, avoids unnecessary to pollute.

The medical fluid transfer device may further comprise a transfer device pushrod protection sleeve 5. The transfer device push rod protection sleeve 5 can be connected with the tail end of the transfer device tube body 1 in a snap-fit mode. In one embodiment, the medical fluid transfer device further comprises a transfer device pushrod sheath. The design of the shifter push rod protective sleeve can avoid misoperation. Simultaneously, this confined translator push rod protective sheath has also improved the utility model discloses a liquid medicine translator's whole medical clean grade avoids unnecessary to pollute.

The side wall of the transfer tube 1 may be further marked with a scale (not shown) to facilitate accurate dosing of the liquid medicine.

fig. 2a and 2b respectively show a schematic sectional view (fig. 2a) of a liquid medicine transfer needle of the present invention and an enlarged schematic view (fig. 2b) of a needle portion of the liquid medicine transfer needle, in fig. 2b, α represents a needle tip angle, a represents an axial length of a needle tip, b1 represents an inner diameter of the liquid medicine transfer needle, b2 represents an outer diameter of the liquid medicine transfer needle, h represents a total axial length of the liquid medicine transfer needle protruding out of a transfer tube body, and c represents an inclined surface length of the needle tip.

In the present invention, the total axial length of the liquid medicine transfer needle means only the length of the portion of the liquid medicine transfer needle extending out of the transfer tube body, and does not include the length of the liquid medicine transfer needle inserted into the transfer tube body. As shown in fig. 2a, the medical fluid transfer needle is inserted into the interior of the translator tube at an appropriate length to ensure stable connection of the medical fluid transfer needle to the translator tube. The length of insertion of the medical fluid transfer needle into the interior of the transfer tube body can be determined by one skilled in the art in accordance with conventional means.

As shown in fig. 2b, the total axial length of the portion of the liquid medicine transfer needle 3 protruding out of the translator tube body is the length indicated by reference character h. In one embodiment, the total axial length of the portion of the medical fluid transfer needle extending out of the body of the translator is 4.9-9.1 mm. In one embodiment, the total axial length of the portion of the medical fluid transfer needle extending out of the body of the translator is 6-8mm, preferably 7.0 mm. The short length of the liquid medicine transfer needle of the utility model makes the liquid medicine transfer needle especially suitable for puncturing a medicine bottle and absorbing high-viscosity medicine, such as chloral hydrate.

In the present invention, the needle tip of the liquid medicine transferring needle is a portion of the liquid medicine transferring needle having an inclined opening. As shown in fig. 2b, in the present invention, the needle tip of the chemical liquid transfer needle 3 corresponds to the reference character a.

As shown in fig. 2b, in the present invention, the axial length of the needle tip refers to the length of the portion corresponding to the reference character a. In one embodiment, the axial length of the needle tip is 2.5-4.6 mm. In one embodiment, the axial length of the needle tip is 3.5 mm.

in the present invention, the needle point angle is the angle formed between the needle point bevel c and the generatrix at the farthest point of the needle point, as shown in fig. 2b, the needle point angle of the liquid medicine transferring needle 3 is the angle shown by the reference character α, in one embodiment, the needle point angle α is 8 ° to 15 °, in one embodiment, the needle point angle α is 11.3 °.

In the present invention, the inner diameter of the liquid medicine transferring needle is the inner diameter of the hollow portion of the liquid medicine transferring needle. As shown in fig. 2b, the inner diameter of the liquid medicine transfer needle 3 is a portion corresponding to reference numeral b 1. In one embodiment, the inner diameter of the medical fluid transfer needle is 0.32 to 0.60 mm. In one embodiment, the inner diameter of the medical fluid transfer needle is 0.46 mm. The liquid medicine transfer needle of the utility model has a large inner diameter of the liquid medicine transfer needle, so that the liquid medicine transfer needle is particularly suitable for absorbing high-viscosity medicines, such as chloral hydrate.

In the present invention, the outer diameter of the liquid medicine transferring needle is the outer diameter of the liquid medicine transferring needle. As shown in fig. 2b, the outer diameter of the liquid medicine transfer needle 3 is a portion corresponding to reference numeral b 2. In one embodiment, the medical fluid transfer needle has an outer diameter of 0.4 to 1.2 mm. In one embodiment, the medical fluid transfer needle has an outer diameter of 0.7 mm.

the length of the bevel of the needle point can be determined by the known mathematical formula according to the relationship between any two or three of the axial length a of the needle point, the inner diameter b1 of the medicine taking needle and the angle α of the needle point.

The liquid medicine transfer needle 3 may be made of a metal material. In one embodiment, the medical fluid transfer needle is a steel needle.

The liquid medicine transfer needle of the utility model has short length, large inner diameter, large needle point angle and large needle point inclined plane. The design can ensure that the liquid medicine transfer needle of the utility model can easily pierce into the medicine bottle and smoothly absorb high-viscosity medicine, such as chloral hydrate.

As shown in fig. 3, the transfer device push rod 2 is located inside the transfer device tube, and the reciprocating motion of the transfer device push rod can realize the suction and infusion of the medicine. As shown in FIG. 3, the pusher 2 of the transfer device comprises a pusher shoe 2-1, a pusher body 2-2, a piston fixing part 2-3 and a piston 2-4.

The push rod bottom support 2-1 is positioned at the lower end of the push rod body 2-2, and the push rod bottom support 2-1 is designed to facilitate pushing and pulling out of a push rod of the transfer device. The shape of the putter shoe 2-1 is ascertainable by one skilled in the art and includes, but is not limited to, circular. In one embodiment, the pusher shoe is circular.

The shape of the putter body 2-2 is determinable by one skilled in the art, including but not limited to a rod shape. In one embodiment, the putter body is quadrangular-shaped. In one embodiment, the length of the putter body is 80-90 mm. In one embodiment, the length of the putter body is 83 mm.

The top of the push rod body 2-2 is arranged with a piston fixing part 2-3 to facilitate the installation of the piston. The shape of the piston fixing portion can be determined by those skilled in the art, including but not limited to conical. In one embodiment, the piston-securing portion is conical.

The piston fixing portion 2-3 may be further installed with a piston 2-4 to enable the transfer device push rod 2 to achieve the suction and infusion of the medicine. In one embodiment, the piston is made of rubber.

The push rod bottom support 2-1, the push rod body 2-2 and the piston fixing part 2-3 can be made of medical materials. The medical material includes various materials that do not cause discomfort to the human body, including but not limited to polyethylene, polypropylene, polyvinyl chloride, and the like. In one embodiment, the pusher shoe, the pusher body and the piston-fixing portion are made of polypropylene.

Fig. 4 is a schematic view of the overall structure of the liquid medicine transfer set of the present invention. As shown in fig. 4, the liquid medicine transferring set of the present invention includes a liquid medicine transferring device and a medicine bottle, and the medicine bottle may contain liquid medicines with different concentrations. In one embodiment, the medical fluid is chloral hydrate.

In one embodiment, a medical fluid transfer kit includes a medical fluid transfer, a vial containing chloral hydrate concentrate, and a vial containing chloral hydrate diluent, wherein the medical fluid transfer is adapted to access the vial containing chloral hydrate concentrate to transfer chloral hydrate concentrate to the vial containing chloral hydrate diluent.

Fig. 5a, 5b, 5c and 5d are schematic views illustrating the use state of the liquid medicine transfer set according to the present invention.

Fig. 5a, 5b, 5c and 5d show a state when the drug solution is sucked from one vial by the drug solution transfer device (fig. 5a), a state when the sucked drug solution is transferred to another vial by the drug solution transfer device (fig. 5b), a state when the drug solution in the transferred vial is mixed (fig. 5c), and a state before the drug vial is opened and ready for oral administration (fig. 5d), respectively.

The liquid medicine transfer device of the utility model has simple structure and convenient clinical use. Moreover, the utility model discloses a liquid medicine transfer needle on liquid medicine translator has the unique design of big inclined plane, wide-angle, wide internal diameter and short length, and this has guaranteed that it can absorb high viscosity chloral hydrate smoothly. In addition, the design of liquid medicine transfer needle protective sheath and translator push rod protective sheath makes the liquid medicine translator use safer to avoid unnecessary pollution. The liquid medicine transfer set of the utility model is also very suitable for the preservation and the transportation of the chloral hydrate medicine and the clinical oral administration of the chloral hydrate medicine.

Examples

Example 1

Effect of different tip angles on chloral hydrate extraction efficiency

The following experiments were conducted to test the effect of different tip angles on chloral hydrate extraction efficiency. The outer diameters of the needle points of the medicine taking needles of the applicators #1 to #5 to be tested are all 0.7mm, the inner diameters of the needle points of the medicine taking needles are all 0.46mm, and the heights of the needle points of the medicine taking needles are all 3.5 mm. Test dispenser #1 had a tip angle of 5 °, test dispenser #2 had a tip angle of 8 °, test dispenser #3 had a tip angle of 11 °, test dispenser #4 had a tip angle of 14 °, and test dispenser #5 had a tip angle of 20 °. The concentration of chloral hydrate to be extracted was 1.47 g/ml. The suction process is performed by the same operator with the same force.

Therefore, the needle tip angle is very important for the rapid suction of the chloral hydrate medicine, and the needle tip angle which is too large or too small can hardly meet the clinical requirement.

Example 2

Effect of different tip inside diameters on chloral hydrate extraction efficiency

The following experiment was conducted to test the effect of different tip inside diameters on chloral hydrate extraction efficiency. The outer diameters of the needle points of the medicine taking needles of the test dosing devices #1 to #6 are all 0.7mm, the angle of the needle point is 11 degrees, and the height of the needle point of the medicine taking needle is 3.5 mm. The inside diameter of the needle tip of test dispenser #1 was 0.36mm, the inside diameter of the needle tip of test dispenser #1 was 0.55mm, the inside diameter of test dispenser #3 was 0.25mm, the inside diameter of test dispenser #4 was 0.15mm, the inside diameter of test dispenser #5 was 0.71mm, and the inside diameter of test dispenser #6 was 0.91 mm. The concentration of chloral hydrate to be extracted was 1.47 g/ml. The suction process is performed by the same operator with the same force.

Therefore, the proper inner diameter of the needle tip can realize the rapid suction of chloral hydrate medicine, and the excessively large or small inner diameter of the needle tip is difficult to meet the clinical requirement.

The above examples are merely for clearly illustrating the examples and are not intended to limit the embodiments. It will be apparent to those skilled in the art that other modifications can be made in the foregoing descriptions without departing from the scope of the invention.

Claims

1. A liquid medicine transfer device comprises a transfer device tube body, a transfer device push rod and a liquid medicine transfer needle, wherein the transfer device push rod is positioned inside the transfer device tube body, and the liquid medicine transfer needle is fixed at one end of the transfer device tube body,

2. The medical fluid transfer device according to claim 1, wherein an inner diameter of the medical fluid transfer needle is 0.46mm, and the needle tip angle is 11.3 °.

3. The medical fluid transfer device of claim 1, wherein the portion of the medical fluid transfer needle extending out of the transfer tube has a total axial length of 4.9mm to 9.1mm, and the needle tip has an axial length of 2.5mm to 4.6 mm.

4. The medical fluid transfer device according to claim 3, wherein a total axial length of a portion of the medical fluid transfer needle protruding out of the transfer device tube body is 7mm, and an axial length of the needle tip is 3.5 mm.

5. The medical fluid transfer device according to claim 1, wherein an outer diameter of the medical fluid transfer needle is 0.4mm to 1.2 mm.

6. The medical fluid transfer device of claim 5, wherein the medical fluid transfer needle has an outer diameter of 0.7 mm.

7. The medical fluid transfer device according to any one of claims 1, 3 and 5 to 6, wherein an inner diameter of the medical fluid transfer needle is 0.46mm, the needle tip angle is 11.3 °, and an axial length of the needle tip is 3.5 mm.

8. The medical fluid transfer device of claim 2, wherein the needle tip has an axial length of 3.5 mm.

9. The medical fluid transfer device according to claim 4, wherein the medical fluid transfer needle has an inner diameter of 0.46mm and the needle tip angle is 11.3 °.

10. The medical fluid transfer device according to any one of claims 1 to 6, further comprising a transfer device pushrod protective sheath, and/or a medical fluid transfer needle protective sheath.

11. Medical fluid transfer device according to any of claims 1 to 6, wherein said transfer device tube defines a volume containing between 0.4ml and 1.4ml of medical fluid.

12. A medical fluid transfer kit comprising the medical fluid transfer device of any one of claims 1-11, a vial containing chloral hydrate concentrate and a vial containing chloral hydrate diluent, wherein the medical fluid transfer device is adapted to access the vial containing chloral hydrate concentrate for transferring chloral hydrate concentrate to the vial containing chloral hydrate diluent.