CN113599628A

CN113599628A - Insulin syringe special for matching intravenous drip

Info

Publication number: CN113599628A
Application number: CN202110819603.4A
Authority: CN
Inventors: 王苗叶
Original assignee: Ningbo Medical Center Lihuili Hospital
Current assignee: Ningbo Medical Center Lihuili Hospital
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-11-05

Abstract

The invention discloses an insulin syringe special for matching intravenous drip, which comprises a syringe body and a needle head, wherein the syringe body comprises a hollow cylinder and a core rod arranged in the hollow cylinder in a sliding manner, and a piston is arranged at one end of the core rod, which is positioned in the hollow cylinder; the needle head comprises a needle seat which is detachably arranged at the end of the hollow cylinder, the front end of the needle seat is provided with a needle tube, and the needle tube is provided with a needle point; the needle tube is a telescopic needle tube, the telescopic needle tube comprises a plurality of sections of continuously sleeved short tubes with variable diameters, and the needle point is positioned on one short tube with the smallest diameter; or, the needle tube is a whole metal wire tube capable of elastically deforming, and the needle point is located at one end, far away from the needle seat, of the metal wire tube. The improved syringe needle has a variable-length needle tube or a deformable and lengthened needle tube, so that the loss of insulin can be reduced, sufficient insulin can be injected into a patient intravenously, and the curative effect is ensured.

Description

Insulin syringe special for matching intravenous drip

Technical Field

The invention relates to the technical field of insulin syringes, in particular to an insulin syringe special for intravenous drip.

Background

Insulin is an important drug for treating diabetes, and the administration mode of the insulin is intravenous injection, jet injection and the like besides common subcutaneous injection. Wherein, intravenous injection is mostly used for supplementing sugar-containing preparation intravenously, according to specific conditions, ordinary insulin (also called short-acting insulin, regular insulin and the like) with proper proportion is added into glucose liquid to help the input glucose to enter tissue cells to be utilized, and is also used for curing and curing diabetes acute complications (ketoacidosis, hypertonic coma, infection and the like), liquid containing insulin is prepared according to certain concentration, and is intravenously dripped or pumped into a trace infusion pump to control and correct hyperglycemia and the like.

In actual operation, a nurse uses an insulin syringe to draw a certain dose of common insulin as required, and the common insulin is injected into glucose liquid from a medicine adding pipe of an infusion bag. The insulin dosage required to be injected by most patients is very small, and is generally dozens of units of a few milliliters; even if the TPN is used for intravenous delivery of nutrient solution, the added insulin is generally dozens of units, and 1ml of insulin syringes are used mostly.

In long-term care practice, the applicant has found that the dosing tube associated with many infusion bags or infusion bottles is long, while the insulin pump needle is short (as shown in fig. 1). In actual operation, after the needle of the insulin syringe is pricked into the medicine adding tube, the whole needle is in the medicine adding tube, and insulin is easy to adhere. This results in that only a part of the originally small dose of insulin is mixed into the glucose solution after the bolus injection, and a part of the insulin actually adheres to the inner wall of the tube of the drug adding tube, and finally the patient does not obtain the desired dose of insulin injection, thereby affecting the curative effect.

Disclosure of Invention

In view of the above, the present invention provides an insulin syringe designed to be improved in structure and used in conjunction with intravenous drip, so that insulin can be injected into an infusion bag in a sufficient amount as much as possible, and the insulin can be mixed with glucose solution and then injected into a patient intravenously without affecting the therapeutic effect.

Based on the aim, the invention provides an insulin syringe special for matching intravenous drip, which comprises a syringe body and a needle head, wherein the syringe body comprises a hollow cylinder and a core rod arranged in the hollow cylinder in a sliding way, and one end of the core rod, which is positioned in the hollow cylinder, is provided with a piston; the needle head comprises a needle seat which is detachably arranged at the end of the hollow cylinder, the front end of the needle seat is provided with a needle tube, and the needle tube is provided with a needle point; the needle tube is a telescopic needle tube, the telescopic needle tube comprises a plurality of sections of continuously sleeved short tubes with variable diameters, and the needle point is positioned on one short tube with the smallest diameter; or, the needle tube is a whole metal wire tube capable of elastically deforming, and the needle point is located at one end, far away from the needle seat, of the metal wire tube.

Compared with the prior art, the technical scheme of the invention has the following advantages: through the needle tubing structure of improvement design insulin syringe, the needle tubing is telescopic needle tubing in the first kind of design, and the needle tubing contracts under the normality and conveniently accomodates, takes out each section of nozzle stub completely during the use and makes the needle tubing extension, operates the needle tubing again after the extension and inserts until reaching in the infusion bag from adding the pencil, promotes insulin syringe's core bar at last and makes the liquid medicine directly injected to in the infusion bag and glucose liquid intensive mixing, avoids the insulin adhesion on adding the pencil inner wall. The needle tube in the second design has good elastic deformation performance, when in use, the needle tube is held and pricked into the medicine adding tube, then the metal wire tube is slowly fed until the needle point part is fed into the infusion bag, and then the insulin is injected and fully mixed with the glucose liquid. Compared with the common insulin syringe, the improved syringe needle has the variable-length needle tube or the deformable and lengthened needle tube, so that the loss of insulin can be reduced, sufficient insulin can be injected into a patient intravenously, and the curative effect is ensured.

In some embodiments, the syringe body is further provided with a flushing structure for flushing out residual insulin drops in the empty cylinder and the needle tube.

In some embodiments, a first flushing channel penetrating through the core rod is arranged on the core rod, a second flushing channel penetrating through the core rod and communicated with the first flushing channel is arranged on the piston, a one-way valve plate used for plugging the second flushing channel is further arranged on the piston, liquid is guided to flow into the hollow cylinder by the one-way valve plate in a one-way mode, and a first rubber plug used for plugging the first flushing channel is further mounted at the tail of the core rod.

In some embodiments, the flushing structure is a flushing short pipe arranged at one end of the hollow cylinder far away from the core rod, the flushing short pipe is communicated with the inner space of the hollow cylinder, and a second rubber plug used for blocking the flushing short pipe is arranged at the outer end of the flushing short pipe.

In some embodiments, the piston is an elongated thin-wall elastic piston, an air storage cavity is arranged in the thin-wall elastic piston, an annular groove is coaxially arranged on the side wall of the thin-wall elastic piston, an air charging nozzle for charging air into the air storage cavity is embedded in the annular groove, an aeration portion is arranged at one end of the thin-wall elastic piston, which is far away from the core rod, and the wall thickness of the aeration portion on the thin-wall elastic piston is smaller than that of other portions.

In some embodiments, when the needle tube is a telescopic needle tube, a baffle plate for limiting each short tube from falling off from the needle seat is further arranged in the needle seat, and a mesh hole for liquid medicine to flow through is arranged on the baffle plate.

In some embodiments, three corresponding capacity calibration lines are arranged on the periphery side of the outer wall of the hollow cylinder, wherein a first volume unit mark is arranged beside the capacity calibration line, a second medical valence unit mark is arranged beside the capacity calibration line, and a third mark in the shape of Arabic numerals plus 'unit' is arranged beside the capacity calibration line.

In some embodiments, three of the capacity graduations and their corresponding markings each have a different distinguishing color.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a block diagram of a conventional insulin pump;

FIG. 2 is a first perspective view of a needle with a retractable needle tube according to example 1 of the present invention;

FIG. 3 is a view showing a second orientation of a needle with a retractable needle cannula in accordance with embodiment 1 of the present invention;

FIG. 4 is a structural view of a needle with an elastically deformable needle tube according to example 1 of the present invention;

FIG. 5 is a schematic diagram showing the pattern of three volume scales on the outer wall of the hollow cylinder in example 1 of the present invention;

FIG. 6 is a structural view of a syringe body according to example 2 of the present invention;

FIG. 7 is a structural view of a syringe body according to embodiment 3 of the present invention;

fig. 8 is a structural view of a syringe body according to example 4 of the present invention.

Wherein the reference numerals are:

1. the device comprises an empty cylinder, 2, a core rod, 3, a piston, 4, a needle seat, 5, a needle tube, 6, a first flushing channel, 7, a second flushing channel, 8, a one-way valve plate, 9, a first rubber plug, 10, a flushing short tube, 11, a second rubber plug, 12, an air storage cavity, 13, an annular groove, 14, an inflating nozzle, 15, an aerating part, 16, a baffle, 17, a mesh, 18 and capacity scale marks.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Example 1:

as shown in figure 2, the invention discloses an insulin syringe special for intravenous drip, which comprises a syringe body and a needle head, wherein the syringe body comprises an empty cylinder 1 and a core rod 2 arranged in the empty cylinder 1 in a sliding way, and one end of the core rod 2, which is positioned in the empty cylinder 1, is provided with a piston 3; the needle head comprises a needle seat 4 which is detachably arranged at the end of the hollow cylinder 1, a needle tube 5 is arranged at the front end of the needle seat 4, and a needle point is arranged on the needle tube 5. As shown in fig. 3, one design is: the needle tube 5 is a telescopic needle tube which comprises a plurality of sections of continuously sleeved short tubes with variable diameters, and the needle point is positioned on one short tube with the smallest diameter; or, as shown in fig. 4, the two designs are: the needle tube 5 is a whole metal tube which can be elastically deformed, and the needle tip is positioned at one end of the metal tube, which is far away from the needle base 4.

In the embodiment, the needle tube structure of the insulin syringe is improved, the needle tube 5 in the first design is a telescopic needle tube, the needle tube 5 retracts to be convenient to store in a normal state, each section of short tube is completely drawn out to extend the needle tube 5 when the insulin syringe is used, and the needle tube is fixed into a long tube shape after being extended by simulating a telescopic fishing rod structure; after the infusion bag is prolonged, the needle tube 5 is operated to be inserted from the medicine adding tube of the infusion bag until the infusion bag reaches the inside of the infusion bag, and finally the core rod 2 of the insulin syringe is pushed to directly inject the medicine liquid into the infusion bag to be fully mixed with the glucose liquid, so that the insulin is prevented from being adhered to the inner wall of the medicine adding tube. In the second design, the needle tube 5 has good elastic deformation performance, the metal wire tube is thin and has certain rigidity performance, and the metal wire tube is not easy to break, when in use, the needle tube 5 is pinched into the medicine adding tube and then the metal wire tube is slowly fed into the medicine adding tube until the needle tip part of the needle tube is fed into the infusion bag, and then the insulin and the glucose liquid are injected and fully mixed. Compared with the common insulin syringe, the improved syringe needle has the variable-length needle tube or the deformable and lengthened needle tube, so that the loss of insulin can be reduced, sufficient insulin can be injected into a patient intravenously, and the curative effect is ensured.

In some embodiments, when the needle tube 5 is a telescopic needle tube, a baffle 16 for limiting each short tube from falling from the needle seat 4 is further arranged in the needle seat 4, and a mesh 17 for circulating the liquid medicine is arranged on the baffle 16.

In some embodiments, as shown in fig. 5, three corresponding capacity graduations 18 are provided on the outer wall of the empty cylinder 1, wherein the first capacity graduations are provided with volume unit marks (ml) at their sides, the second capacity graduations are provided with medical valence unit marks (iu) at their sides, and the third capacity graduations are provided with arabic numerals plus "unit" marks (e.g., "8 units") at their sides. The three volume scale marks and the corresponding marks have different color separation. The dose of insulin injection is particularly important for patients, in case of overproof injection dose, risks such as hypoglycemia and even coma of patients can be caused, and scale marks in three forms can assist basic nursing staff to accurately master the injection dose, so that the condition of excessive injection is avoided as much as possible.

Example 2:

as an improved design based on the above embodiment 1, as shown in FIG. 6, the injector body is further provided with a flushing structure for flushing out the residual insulin drops in the empty tube 1 and the needle tube 5. In the above design, the needle tube 5 is lengthened to extend into the infusion bag, but on the other hand, the infusion path of the needle tube 5 is also lengthened, so that a trace amount of insulin droplets remain in the needle tube 5 and a trace amount of insulin droplets also remain in a tiny gap between the hollow cylinder 1 and the piston 3. Aiming at the trace residue, the flushing structure is designed to wrap the trace residue in the infusion bag, so that the loss of insulin dose is further reduced.

In one implementation form of the scouring structure, a first flushing channel 6 penetrating through the core rod 2 is arranged on the core rod 2, a second flushing channel 7 penetrating through the core rod and communicated with the first flushing channel 6 is arranged on the piston 3, a one-way valve block 8 used for blocking the second flushing channel 7 is further arranged on the piston 3, one-way flow guiding liquid of the one-way valve block 8 flows into the hollow cylinder 1, and a first rubber plug 9 used for blocking the first flushing channel 6 is further mounted at the tail part of the core rod 2. In this design, establish the supplementary passageway of erodeing with the inside intercommunication of empty section of thick bamboo 1 at the core bar position of syringe, after insulin injection accomplishes, can additionally pour into a small amount of glucose solution (several milliliters) in first rubber buffer 9 department, once only wash a small amount of insulin liquid drops remaining in the insulin syringe to the infusion bag, the small amount of glucose solution of supplementary injection does not have unfavorable influence to the treatment, and the glucose solution intensive mixing in sufficient insulin and the big bag after erodeing, can reach the hypoglycemic effect in the anticipated treatment scheme.

Example 3:

the embodiment discloses two realization forms of the flushing structure, as shown in fig. 7, the flushing structure is a flushing short pipe 10 arranged on one end of the hollow cylinder 1 far away from the core rod 2, the flushing short pipe 10 is communicated with the inner space of the hollow cylinder 1, and a second rubber plug 11 for plugging the flushing short pipe 10 is arranged at the outer end of the flushing short pipe 10. The mode also belongs to the liquid scouring design, is the same as the previous design principle, only the scouring position is replaced at the front end of the empty cylinder 1 and is communicated with the inner space of the empty cylinder 1, after the insulin in the insulin syringe is injected into the infusion bag for the first time, a plurality of milliliters of glucose solution is supplemented from the flushing short pipe 10, and a small amount of insulin remained in the gap in the empty cylinder 1 and the needle tube 5 is scoured into the infusion bag together.

Example 4:

the third implementation form of the flushing structure is disclosed in this embodiment, as shown in fig. 8, the piston 3 is an elongated thin-walled elastic piston, a gas storage cavity 12 is arranged in the thin-walled elastic piston, an annular groove 13 is coaxially arranged on the side wall of the thin-walled elastic piston, an inflation nozzle 14 for inflating the gas storage cavity 12 is embedded in the annular groove 13, an aeration portion 15 is arranged at one end of the thin-walled elastic piston, which is far away from the core rod 2, and the wall thickness of the aeration portion 15 on the thin-walled elastic piston is smaller than that of other portions. In the design, after the piston 3 is normally pushed to the top in the hollow cylinder 1, the piston can continue to push due to the characteristic of thin-wall elasticity, a certain amount of high-pressure clean gas is pre-filled in the gas storage cavity 12 of the thin-wall elastic piston, and the weakest part, namely the aeration part 15, of the piston 3 can be broken after the piston is pushed to a certain degree by applying pressure, so that the high-pressure gas quickly and directly erodes the gap space in the hollow cylinder 1, and residual insulin liquid drops are blown into the infusion bag. Infusion bag is the changeable plastic bag body of volume generally, and a small amount of gas can not explode the bag after blowing in, and the operation of can reassuring without the potential safety hazard.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. An insulin syringe special for matching intravenous drip comprises a syringe body and a needle head, wherein the syringe body comprises a hollow cylinder (1) and a core rod (2) arranged in the hollow cylinder (1) in a sliding manner, and one end, positioned in the hollow cylinder (1), of the core rod (2) is provided with a piston (3); the needle head comprises a needle seat (4) which is detachably arranged at the end of the hollow cylinder (1), a needle tube (5) is arranged at the front end of the needle seat (4), and a needle point is arranged on the needle tube (5); the method is characterized in that:

the needle tube (5) is a telescopic needle tube (5), the telescopic needle tube (5) comprises a plurality of sections of continuously sleeved short tubes with variable diameters, and the needle point is positioned on one short tube with the smallest diameter;

or, the needle tube (5) is a whole metal wire tube capable of elastically deforming, and the needle point is located at one end, far away from the needle seat (4), of the metal wire tube.

2. The insulin syringe dedicated for intravenous drip according to claim 1, wherein: the injector body is also provided with a flushing structure for flushing residual insulin liquid drops in the empty cylinder (1) and the needle tube (5).

3. The insulin syringe dedicated for intravenous drip according to claim 2, wherein: be equipped with on core bar (2) and run through first passageway (6) of washing of core bar (2), be equipped with on piston (3) run through with first second that washes passageway (6) intercommunication wash passageway (7), still be equipped with on piston (3) and be used for the shutoff second to wash one-way valve block (8) of passageway (7), inside one-way water conservancy diversion liquid flow direction empty section of thick bamboo (1) of one-way valve block (8), first rubber buffer (9) that are used for the shutoff first passageway (6) of washing are still installed to the afterbody of core bar (2).

4. The insulin syringe dedicated for intravenous drip according to claim 2, wherein: the flushing structure is used for flushing one end of the short pipe (10) far away from the core rod (2) and arranged on the hollow cylinder (1), the inner space of the short pipe (10) and the hollow cylinder (1) is communicated, and the outer end of the short pipe (10) is provided with a second rubber plug (11) used for plugging and flushing the short pipe (10).

5. The insulin syringe dedicated for intravenous drip according to claim 2, wherein: the piston (3) is an elongated thin-wall elastic piston, a gas storage cavity (12) is arranged in the thin-wall elastic piston, an annular groove (13) is coaxially arranged on the side wall of the thin-wall elastic piston, an inflating nozzle (14) used for inflating the gas storage cavity (12) is embedded in the annular groove (13), an aerating portion (15) is arranged at one end, far away from the core rod (2), of the thin-wall elastic piston, and the wall thickness of the aerating portion (15) on the thin-wall elastic piston is smaller than that of other portions.

6. The insulin syringe dedicated for intravenous drip according to claim 1, wherein: when the needle tube (5) is a telescopic needle tube (5), a baffle (16) used for limiting short tubes to fall from the needle seat (4) is further arranged in the needle seat (4), and meshes (17) for liquid medicine to flow are arranged on the baffle (16).

7. The insulin syringe dedicated for intravenous drip according to claim 1, wherein: the outer wall week side of blank section of thick bamboo (1) is equipped with three corresponding capacity scale mark (18), wherein, first the side of capacity scale mark (18) is equipped with volume unit mark, the second way the side of capacity scale mark (18) is equipped with medical valence unit mark, the third the side of capacity scale mark (18) is equipped with the mark of arabic numeral plus "unit" typeface.

8. The insulin syringe dedicated for intravenous drip according to claim 7, wherein: the three volume scale marks (18) and the corresponding marks thereof respectively have different color separation.