WO2023280281A1

WO2023280281A1 - Disposable indwelling needle flushing capsule

Info

Publication number: WO2023280281A1
Application number: PCT/CN2022/104442
Authority: WO
Inventors: 文环
Original assignee: 厦门大学附属第一医院
Priority date: 2021-07-07
Filing date: 2022-07-07
Publication date: 2023-01-12
Also published as: CN216061537U

Abstract

A disposable indwelling needle flushing capsule, comprising a liquid storage bag (10). The liquid storage bag (10) is provided with a conical liquid outlet nozzle (12) that can be connected to an indwelling needle, etc.; the liquid storage bag (10) is normally in an expanded state; and the liquid storage bag (10) can be contracted. The disposable indwelling needle flushing capsule also comprises an end cap (20) for covering the liquid outlet nozzle (12). The end cap (20) can be removed during use; the liquid storage bag (10) is connected to a snap structure; and after pressing the liquid storage bag (10) to squeeze out the liquid in the liquid storage bag (10), the liquid storage bag (10) is kept in a contracted state under the restriction of the snap structure. The expandable liquid storage bag (10) is used to store normal saline, heparin sodium solution, etc., and the liquid outlet nozzle (12) is directly connected to the indwelling needle, such that the liquid can be injected into an indwelling trocar by squeezing the liquid storage bag (10) to flush the indwelling needle; moreover, the snap structure restricts the liquid storage bag (10) to prevent expansion and contraction of the liquid storage bag (10), ensuring sufficient pressure in the indwelling needle and increasing safety and use reliability; in addition, the liquid storage bag (10) has a simple structure and low manufacturing cost, thereby saving treatment costs and medical waste disposal space.

Description

Disposable indwelling needle flushing capsule

technical field

The invention relates to a disposable indwelling needle flushing capsule.

Background technique

Indwelling needles are also called venous trocars. The use of indwelling needles can reduce the pain caused by repeated venipuncture and the fear of injections, protect blood vessels, facilitate clinical medication, and reduce the workload of nurses. It is widely used in clinical practice. . We know that at the end of the clinical infusion, since the medicinal solution is no longer continuously infused into the patient's vein, when the nurse pulls out the infusion needle from the indwelling needle, the blood in the patient's vein can easily flow back into the indwelling needle. For backflow, the nurse will inject normal saline or sodium heparin solution into the indwelling needle in pulses, and use normal saline or sodium heparin solution to flush the blood back into the vein to prevent blood return and tube blockage. Physiological saline and heparin sodium solution are generally injected through traditional needle tubes. For example, the invention patent of the authorized announcement number CN204815148U also discloses a kind of injection tube used with an indwelling needle. The injection tube includes a hollow tube, a connecting tube, a push rod, and An introduction tube connected to the hollow tube is arranged in the connecting tube, and the physiological saline in the hollow tube is pushed out by a push rod during use, and the physiological saline enters the indwelling needle through the introduction tube. However, whether it is an injection tube or an ordinary needle tube, the structure is relatively complicated, and the cost is also high. It requires a nurse to dispense the solution, which increases the nurse's operation and increases the treatment cost of the patient.

Contents of the invention

The invention provides a disposable indwelling needle flushing capsule, which overcomes the shortcomings of the background technology. The technical solution adopted by the present invention to solve its technical problems is:

Disposable indwelling needle flushing capsule, including a liquid storage bag, the upper end of the liquid storage bag is provided with a conical liquid outlet that can be connected with the indwelling needle, the liquid storage bag is in an inflated state under normal conditions, and the liquid storage bag The liquid bag is retractable, and also includes an end cap for covering the liquid outlet, the end cap can be removed during use, the liquid storage bag is connected with a buckle structure, and the liquid storage bag is compressed to squeeze out the liquid storage After the liquid in the bladder is released, the fluid storage bladder is kept in a contracted state under the restriction of the buckle structure.

In a preferred embodiment: the liquid storage bag is a bellows structure, the liquid outlet is arranged on the upper end surface of the liquid storage bag, pushing the lower end surface of the liquid storage bag upwards can compress the storage bag. fluid sac.

In a preferred embodiment: the inner surface of the lower end surface of the liquid storage bag is provided with an upwardly protruding block in the middle, the cross section of the block is in the shape of a dovetail groove, and the edge of the top of the block forms a buckle edge , the inner wall of the liquid outlet nozzle is provided with a rib corresponding to the buckle, and after the liquid storage bag is squeezed, the buckle and the rib are snapped together, and the buckle and the rib form the snap buckle structure.

In a preferred embodiment: the liquid storage bag is integrally blow-molded; the liquid storage bag is a transparent structure; and an identification frame is provided on the liquid storage bag.

In a preferred embodiment: the upper end surface of the liquid storage bag is connected with an upper casing protruding laterally outwards, and the lower end surface of the liquid storage bag is connected with a lower casing protruding laterally outwards, so The upper casing and the lower casing are provided with a locking block and a locking slot that can be interlocked with each other, and after the liquid storage bag is squeezed, the locking block is engaged with the locking slot, and the locking block is connected to the locking slot. The slot constitutes the buckle structure.

In a preferred embodiment: the upper casing and the lower casing are in the shape of caps.

In a preferred embodiment: the upper housing is provided with a card slot, and the lower housing is provided with a card block; the card slots are two and symmetrical, and the locking blocks are two and symmetrical.

In a preferred embodiment: there are multiple clamping slots, and the clamping block engages with the clamping slots at different positions according to the degree of squeezing the fluid storage bag.

In a preferred embodiment: the buckle structure is a rubber band connected to the upper end surface of the liquid storage bag, and after the liquid storage bag is squeezed, the rubber band covers the lower end surface of the liquid storage bag.

In a preferred embodiment: there are two rubber bands arranged symmetrically.

In a preferred embodiment: the hardness of the middle part of the side wall of the liquid storage bag is greater than the hardness of the upper and lower parts of the side wall, and the liquid outlet is set in the middle part of the side wall of the liquid storage bag.

In a preferred embodiment: the upper and lower parts of the side wall of the liquid storage bag are bellows structures, the upper and lower parts of the side wall of the liquid storage bag are respectively provided with hooks, and the middle part of the side wall of the liquid storage bag The two hooks at the upper and lower ends are respectively provided with buckle edges, and after the liquid storage bag is squeezed, the hooks are fastened to the buckle edges, and the hooks and the buckle edges form the buckle structure.

Compared with the background technology, this technical solution has the following advantages:

The shrinkable and inflatable liquid storage bag is used to store physiological saline or heparin sodium solution. The liquid outlet is directly connected to the indwelling needle, and the liquid can be injected into the indwelling tube by squeezing the liquid storage bag, and the indwelling needle can be flushed. The buckle structure restricts the liquid storage bag, which can prevent the liquid storage bag from expanding and retracting, and ensure sufficient pressure in the indwelling needle, making it safer and more reliable to use. Moreover, the liquid storage bag has a simple structure and low cost, which can save treatment costs. The volume of the liquid storage bag becomes smaller after use, which saves the space for medical waste disposal.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 depicts a three-dimensional schematic view of a disposable indwelling needle flushing capsule (inflated state of the reservoir).

Fig. 2 is a schematic perspective view of the liquid storage bag of the disposable indwelling needle flushing capsule shrinking and extruding liquid.

Fig. 3 is a schematic cross-sectional view showing that the liquid storage bag of the disposable indwelling needle flushing capsule shrinks and extrudes liquid.

Fig. 4 depicts a schematic diagram of the second embodiment of the disposable indwelling needle flushing capsule (inflated state of the reservoir).

Fig. 5 is a schematic diagram of the third embodiment of the disposable indwelling needle flushing capsule, in which the liquid reservoir shrinks and squeezes out the liquid.

Fig. 6 is a schematic perspective view of the fourth embodiment of the disposable indwelling needle flushing capsule, in which the liquid storage bag shrinks and extrudes liquid.

Fig. 7 is a schematic side view of the fourth embodiment of the disposable indwelling needle flushing capsule, in which the liquid storage bag shrinks and squeezes out the liquid.

Fig. 8 is a schematic perspective view of the fifth embodiment of the disposable indwelling needle flushing capsule, in which the liquid storage bag shrinks and squeezes out the liquid.

Fig. 9 is a schematic side view of the fifth embodiment of the disposable indwelling needle flushing capsule, in which the liquid storage bag contracts and squeezes out the liquid.

detailed description

Example 1:

Please refer to Fig. 1 to Fig. 3, the disposable indwelling needle flushing capsule includes a liquid storage bag 10, and the upper end of the liquid storage bag is provided with a conical liquid outlet 12 that can be connected with the indwelling needle (the liquid outlet 12 It can also be docked with joints of other blood transfusion, infusion, and measuring devices), the liquid storage bag 10 is in an inflated state under normal conditions, and the liquid storage bag 10 can shrink to squeeze out the stored liquid. The liquid storage bag 10 is a plastic part, such as a bag used to store ink on a pen, or a structure similar to an air bag can also be used. The disposable indwelling needle flushing capsule also includes an end cap 20 for covering the liquid outlet 12, and the end cap 20 can be removed during use, and the end cap seals the liquid outlet 12 under normal conditions. The liquid storage bag 10 is connected with a buckle structure, and after the liquid storage bag 10 is compressed to squeeze out the liquid in the liquid storage bag, the liquid storage bag is kept in a contracted state under the restriction of the buckle structure.

The liquid storage bag 10 is filled with physiological saline or sodium heparin solution in advance, and when the patient infusion is completed, the nurse removes the end cap 20, inserts the liquid outlet nozzle 12 and the indwelling needle together, and then squeezes the liquid storage bag 10, The internal liquid is injected into the indwelling needle to enter the patient's body, and then because the buckle structure restricts the liquid storage bag 10, the liquid storage bag cannot rebound, so a certain pressure is continuously maintained in the indwelling needle, which can effectively prevent the patient from Blood flowed out.

Preferably, the liquid storage bag 10 is a bellows structure, the liquid outlet nozzle 12 is arranged on the upper end surface of the liquid storage bag, pushing the lower end surface of the liquid storage bag upwards can compress the liquid storage bag . The bellows reservoir is adopted, which has a simple structure and is easy to fill with liquid. You only need to squeeze out the gas when the bottle is empty, and you can inhale the liquid when it rebounds naturally.

Preferably, the upper end of the liquid storage bag 10 is sleeved with an upper casing 14 having a top surface and side walls, and the lower end of the liquid storage bag is sleeved with a lower casing 16 with a bottom surface and side walls. The inner diameter is larger than the outer diameter of the lower housing, and the side walls of the upper housing and the lower housing are provided with a locking block 162 and a locking groove 142 that can be interlocked with each other, and after the liquid storage bag 10 is squeezed, the locking block 162 The clamping block and the clamping slot constitute the buckling structure. That is to say, the upper casing 14 and the lower casing 16 cannot be separated by using the clamping block 162 and the locking groove 142, so that the positions of the upper end surface and the lower end surface of the liquid storage bag 10 are relatively fixed, so that the liquid storage bag 10 Can't snap back. Of course, it is also possible to reverse the position of the card slot and the card block. Further preferably, there are two locking slots 142 and they are bilaterally symmetrical, and there are two locking blocks 142 and they are bilaterally symmetrical. It can be understood that the structure of the buckle and the slot is not limited to the hook shape. In fact, the buckle can also be a loop type, and the buckle can also be arranged on the elastic arm, as long as the two can be matched and fastened together That's it.

Example 2:

Please refer to FIG. 4 , as a deformed structure of the disposable indwelling needle flushing capsule of the present invention, compared with the structure in FIG. 1 , the difference lies in the buckle structure, specifically: the inner surface of the lower end surface of the liquid storage bag 10 The surface is provided with an upwardly protruding block 18 in the middle. The cross section of the block 18 is in the shape of a dovetail groove. The edge of the top of the block 18 forms a buckle edge 181, and the inner wall of the outlet nozzle 12 corresponds to the buckle. Ribs 121 are arranged on the side, extruding the liquid storage bag

After 10, the buckle edge 181 and the rib 121 are clamped together, and the buckle edge and the rib form the buckle structure. That is to say, the buckle edge 181 and the rib 121 are clamped together, which can also prevent the liquid storage bag 10 from rebounding. In this embodiment, the liquid storage bag 10 is integrally blow-molded. In addition, preferably, the liquid storage bag 10 has a transparent structure, and the color, transparency, and properties of the liquid contained therein can be observed. Furthermore, preferably, the liquid storage bag 10 is provided with an identification frame, which can identify the solution name, expiration date, capacity, scale, etc.

Example 3:

Please refer to Fig. 5. As another deformed structure of the disposable indwelling needle flushing capsule of the present invention, compared with the structure in Fig. 1, the difference lies in the buckle structure, specifically: the buckle structure is connected to the The rubber band ring 19 on the upper end surface of the liquid storage bag 10, after squeezing the liquid storage bag 10, the rubber band cover 19 covers the lower end surface of the liquid storage bag 10, which can also prevent the rebound of the liquid storage bag 10. Preferably, there are two rubber band rings 19 arranged symmetrically.

Example 4:

In addition, in this application, the structure of the fluid storage bag can also be modified so that the nurse can operate it more easily, specifically, as shown in Figure 6 and Figure 7:

The hardness of the middle part of the side wall of the liquid storage bag 10 is greater than that of the upper and lower parts of the side wall, and the liquid outlet 12 is set in the middle part of the side wall of the liquid storage bag.

Therefore, the liquid storage bag 10 is small in size, so that the middle part of the side wall of the liquid storage bag can provide support when the nurse is operating, so that the liquid storage bag can be squeezed more easily, which meets the habit of manually pressing a small container, that is, the index finger and middle finger can be moved from Buckle the upper end surface of the liquid storage bag 10 from above, and the thumb can buckle the lower end surface of the liquid storage bag 10 from below, so that the medicine in the liquid storage bag can be squeezed out very conveniently, and at the same time, it is also easy to squeeze out the medicine in the liquid storage bag because the liquid outlet 12 is set on the side. Make observations. Further, the upper and lower parts of the side wall of the liquid storage bag are bellows structures, the upper and lower parts of the side wall of the liquid storage bag are respectively provided with hooks 30, and the upper and lower ends of the middle part of the side wall of the liquid storage bag correspond to two Each of the hooks is respectively provided with buckle edges 40 , and after the liquid storage bag is squeezed, the hook 30 is buckled with the buckle edges 40 , and the hooks 30 and the buckle edges 40 form the buckle structure. It can be understood that the hook 30 can be integrally formed with the liquid storage bag 10, and of course the hook can also be arranged on a transition piece, and the transition piece is connected to the liquid storage bag; The liquid storage bag 10 is integrally formed, and of course, the button edge can also be arranged on a transition piece, and the transition piece is then connected to the liquid storage bag.

Example 5

Please refer to Fig. 8 and Fig. 9, the structure shown in Fig. 8 and Fig. 9 is different from the first embodiment in that: there are multiple card slots 142 arranged along the axial direction of the side wall of the upper housing 14, and the card slots 142 are The block 162 is engaged with the draw-in slots at different positions according to the degree of squeezing the liquid storage bag 10 (the upper shell 14 can be extended according to the position of the draw-in slot 142), so that flexible operation can be performed for different dosage requirements , that is to say, if only a small amount of dose needs to be extruded, the clamping block 162 is buckled with the frontmost clamping slot 142, and if more doses are required, push until the clamping block is buckled with the clamping slot at the middle position, most like When the dose required is the largest, push until the block is engaged with the slot at the last position. This progressive control method is more functional.

The above is only a preferred embodiment of the present invention, so the scope of the present invention cannot be limited accordingly, that is, the equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still be covered by the present invention within range.

Industrial Applicability

The invention discloses a disposable indwelling needle flushing capsule, which includes a liquid storage bag. The liquid storage bag is provided with a conical liquid outlet that can be docked with the indwelling needle. The liquid storage bag is in an inflated state under normal conditions. In addition, the liquid storage bag can be contracted, and also includes an end cap for covering the liquid outlet nozzle. The end cap can be removed during use, and the liquid storage bag is connected with a buckle structure to compress the liquid storage bag. After the liquid in the liquid storage bag is squeezed out, the liquid storage bag is kept in a contracted state under the limitation of the buckle structure. The shrinkable and inflatable liquid storage bag is used to store physiological saline or heparin sodium solution, etc. The liquid outlet is directly connected to the indwelling needle, and the liquid can be injected into the indwelling tube by squeezing the liquid storage bag, and the indwelling needle can be flushed. And the buckle structure restricts the liquid storage bag, which can prevent the expansion and contraction of the liquid storage bag, ensure sufficient pressure in the indwelling needle, make it safer and more reliable to use, and the liquid storage bag has a simple structure, low cost, and saves treatment costs and medical waste Handle space with industrial applicability.

Claims

The disposable indwelling needle flushing capsule includes a liquid storage bag, and the liquid storage bag is provided with a liquid outlet, and is characterized in that: the liquid storage bag has an expanded state and a contracted state, and also includes a Referring to the end cap of the liquid outlet, the side wall of the liquid storage bag is provided with a buckle structure, which compresses the liquid storage bag, and the buckle and buckle fit to keep it in a contracted state.
The disposable indwelling needle flushing capsule according to claim 1, characterized in that: the liquid storage bag is a compressible bellows or a spiral structure, and the liquid outlet is arranged on the upper end surface of the liquid storage bag, Pushing up the lower end surface of the reservoir can compress the reservoir.
The disposable indwelling needle flushing capsule according to claim 2, characterized in that the buckle structure is that an upwardly protruding block is provided in the middle of the inner surface of the lower end surface of the liquid storage bag, and the snap block The cross section of the block is in the shape of a dovetail groove, the edge of the top of the clamping block forms a buckle edge, and the inner wall of the liquid outlet nozzle is provided with a convex rib corresponding to the buckle edge, and the buckle edge and the buckle edge are formed after the liquid storage bag is squeezed. The ribs are clamped together, and the buckle edge and the ribs constitute the buckle structure.
The disposable indwelling needle flushing capsule according to claim 3, characterized in that: the liquid storage bag is integrally blow-molded; or the liquid storage bag is a transparent structure; or the liquid storage bag is provided with a logo frame .
The disposable indwelling needle flushing capsule according to claim 2, wherein the upper end of the liquid storage bag is sleeved with an upper shell having a top surface and a side wall, and the lower end of the liquid storage bag is sleeved with a bottom surface and the lower shell of the side wall, the upper shell and the lower shell are provided with a block and a slot that can be interlocked with each other, and after the liquid storage bag is squeezed, the block is locked with the slot Then, the clamping block and the clamping groove constitute the buckling structure.
The one-time indwelling needle flushing capsule according to claim 5, characterized in that: there are two locking grooves which are bilaterally symmetrical, and there are two locking blocks which are bilaterally symmetrical.
The disposable indwelling needle flushing capsule according to claim 5 or 6, characterized in that: there are a plurality of locking grooves arranged along the axial direction of the side wall of the upper casing, and the locking blocks are pressed according to the pressure of the reservoir. The difference in the degree of the liquid bag is engaged with the draw-in slots at different positions.
The disposable indwelling needle flushing capsule according to claim 2, characterized in that: the buckle structure is a rubber band connected to the upper surface of the liquid storage bag, and after the liquid storage bag is squeezed, the rubber band The ribs cover the lower end surface of the liquid storage bag; the rubber bands are two, arranged symmetrically.
The disposable indwelling needle flushing capsule according to claim 1, characterized in that: the hardness of the middle part of the side wall of the storage bag is greater than the hardness of the upper and lower parts of the side wall, and at the same time, the liquid outlet is set on the side wall of the storage bag. The middle part of the side wall of the liquid storage bag; the upper and lower parts of the side wall of the liquid storage bag are bellows structures, the upper and lower parts of the side wall of the liquid storage bag are respectively provided with hooks, and the middle part of the side wall of the liquid storage bag The two hooks at the upper and lower ends are respectively provided with buckle edges, and after the liquid storage bag is squeezed, the hooks are fastened to the buckle edges, and the hooks and the buckle edges form the buckle structure.