Infusion bag used for electronic infusion pump and capable of reducing liquid medicine residues
By designing a cross-textured infusion bag on the infusion bag used by the electronic infusion pump to form a membrane, the problem of residual medicine is solved, and higher infusion accuracy and lower drug waste is achieved.
Patent Information
- Application Number
- CN202510603932.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-06-24
AI Technical Summary
The existing electronic infusion pumps are difficult to completely extract the medicine when the amount of medicine is small, resulting in the residue of the medicine, affecting the infusion accuracy and causing the waste of medicine.
An infusion bag for electronic infusion pumps was designed. The two infusion bags formed a regular arrangement of crossed long lines on the inner surface of the film to form a flow channel of the medicine liquid to ensure that the medicine liquid can flow smoothly and reduce residue.
Through the design of cross-texture, the residue of the medicine in the infusion bag is reduced, the infusion accuracy is improved, the waste of drugs is avoided, and the competitiveness of the infusion equipment is improved.
Smart Images
Figure CN120189340A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an infusion bag for an electronic infusion pump, in particular to an infusion bag for an electronic infusion pump which can reduce residual medicine solution. Background Art
[0002] An electronic infusion pump is an infusion device that controls the infusion speed by acting on the infusion catheter through an electronic control device. Electronic infusion pumps generally use extrusion transmission or peristaltic transmission solutions to extract the drug from the infusion bag and then inject it into the patient. In an infusion bag with a smooth interior, or an infusion bag with consistent textures inside the two membranes, when the amount of drug is small, the drug will be wrapped in a local vacuum, forming small bubbles. The transmission device of the electronic infusion pump makes it difficult to extract the drug cleanly, resulting in residual drug and inaccurate infusion volume. Some drugs are very expensive, and the infusion bag cannot be drained cleanly, which also causes drug waste.
[0003] The lines on the two films of the infusion bags on the market are either parallel to the liquid outlet direction of the hose interface or perpendicular to the liquid outlet direction of the hose interface. Cut the infusion bag in the middle, as shown below Figure 1 and Figure 2 It is an infusion bag with the lines on the two membranes parallel to the liquid outlet direction of the hose interface. Figure 3 and Figure 4 It is an infusion bag with the lines on the two films perpendicular to the liquid outlet direction of the hose interface. When the liquid medicine is low, the convex lines on the upper film may be embedded in the concave lines on the lower film, which will block the flow path of the liquid medicine and prevent the liquid medicine from flowing out smoothly. Summary of the invention
[0004] In order to solve the problems in the prior art, the present invention provides an infusion bag used for an electronic infusion pump and capable of reducing residual drug solution.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: An infusion bag for an electronic infusion pump that can reduce residual drug solution, comprises a tube interface and two infusion bag component membranes, the three of which are connected together to form an infusion bag, the two infusion bag component membranes are divided into infusion bag component membrane 1 and infusion bag component membrane 2, the inner surface of infusion bag component membrane 1 is regularly arranged with long-direction texture 1, the inner surface of infusion bag component membrane 2 is regularly arranged with long-direction texture 2, and texture 1 and texture 2 are in a cross state in space.
[0006] Furthermore, the infusion bag component membrane 1 and the infusion bag component membrane 2 form a cavity at the circumferential joint, and after the medicine liquid in the medicine bag is reduced, a medicine liquid flow channel is formed in the cavity; the medicine liquid flow channel is connected to the tube interface, and at the same time, the texture 1 on the infusion bag component membrane 1 and the texture 2 on the infusion bag component membrane 2 are both connected to the medicine liquid flow channel.
[0007] Further, the tube interface, the infusion bag forming film one, and the infusion bag forming film three are thermally welded together.
[0008] Further, the planar projections of the first texture and the second texture are cross at 90 degrees.
[0009] Further, the first texture is a straight texture and is parallel to the liquid outlet direction of the tube interface; the second texture is a straight texture and is perpendicular to the liquid outlet direction of the tube interface.
[0010] Further, the cross-sections of the first texture and the second texture are arc-shaped protrusions.
[0011] Further, the tube interface is a flexible tube interface.
[0012] Further, the first texture is a wave texture and the second texture is a wave texture.
[0013] Advantages of the present invention: 1. There are regular textures on the inner sides of the two infusion bag forming films of the infusion bag of the present invention. The textures of the two infusion bag forming films are in a cross state in space. When the liquid medicine in the infusion bag is less, due to the isolation effect of the textures, the two films will not be sucked together, and the liquid medicine can flow smoothly, thereby reducing the residual liquid medicine in the infusion bag and improving the infusion accuracy of the infusion device.
[0014] 2. In the present invention, the two infusion bag forming films are formed into an infusion bag by thermal welding. At the circumferential heat-fused joint of the two infusion bag forming films, due to the wall thickness, the two films will not contact and will form a cavity. After the liquid medicine in the medicine bag decreases, a liquid medicine flow channel will be formed here. The liquid medicine can flow along the texture, first flow to the circumferential liquid medicine flow channel, then converge to the tube interface, and then be pumped out to the external infusion pipeline by the transmission mechanism of the electronic infusion pump.
[0015] Since the textures of the two infusion bag forming films are cross, on the four sides of the infusion bag, the texture of the inner film on each surface will be the same as the flow direction of the liquid medicine, which makes the liquid medicine flow more easily (because the electronic pump is placed on the table or hung on the patient's body, generally around the waist, and the pump head is on top and the medicine box is at the bottom, relying on the infusion mechanism of the pump head to pump the liquid medicine out of the medicine bag, the fluidity of the liquid medicine is particularly important on the infusion bag of the electronic infusion pump).
[0016] Compared with the traditional infusion bag with the same texture on the two infusion bag forming films or a single-sided cross texture, in the infusion bag of the present invention, since the texture on one side is always the same as the flow direction, the actual liquid medicine flow channel area formed in the flow direction is larger.
[0017] 3. The infusion bag of the present invention is applicable to an electronic infusion pump and can also be used for a medicine bag that infuses by the gravity of the liquid medicine. Description of the Drawings
[0018] Figure 1 Schematic diagram of an infusion bag in the prior art where the patterns on the two membranes and the liquid outlet direction of the hose interface are both parallel. Figure 2 is Figure 1 The enlarged view of part A in Figure 3 Schematic diagram of an infusion bag in the prior art where the patterns on the two membranes and the liquid outlet direction of the hose interface are both perpendicular. Figure 4 is Figure 3 The enlarged view of part B in Figure 5 Schematic diagram of the present invention. Figure 6 is Figure 5 The enlarged view of part C in Figure 7 Schematic diagram of the liquid flow channel formed around the infusion bag in the present invention.
[0019] The drawings are only for illustrative purposes and should not be construed as limitations on this patent; for better illustration of this embodiment, some components in the drawings may be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Detailed implementation manners
[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0021] Embodiment 1: As Figures 5 to 7 shown, this embodiment provides an infusion bag for an electronic infusion pump and capable of reducing liquid medicine residue, including a hose interface 3 and two membranes forming the infusion bag, and the three are thermally welded together to form the infusion bag.
[0022] The two membranes forming the infusion bag are divided into membrane one 1 for forming the infusion bag and membrane two 2 for forming the infusion bag. The inner surface of membrane one 1 for forming the infusion bag is regularly arranged with longitudinal patterns one 11, and the inner surface of membrane two 2 for forming the infusion bag is regularly arranged with longitudinal patterns two 22. Patterns one 11 and two 22 are in a cross state in space.
[0023] Specifically in this embodiment, the planar projections of patterns one 11 and two 22 are in a 90-degree cross. Pattern one 11 is a straight pattern and is parallel to the liquid outlet direction of hose interface 3; pattern two 22 is a straight pattern and is perpendicular to the liquid outlet direction of hose interface 3. The cross-sections of patterns one 11 and two 22 are both arc-shaped protrusions.
[0024] Since the patterns of the two films forming the infusion bag are cross-shaped in space, when there is less liquid medicine in the infusion bag, due to the isolation effect of the patterns, the two films will not stick together, and the liquid medicine can flow smoothly, thereby reducing the liquid medicine residue in the infusion bag, improving the infusion accuracy of the infusion device, and enhancing the competitiveness of the infusion device.
[0025] After the two films forming the infusion bag are hot-pressed into an infusion bag, at the circumferential heat-fused joint of the first film 1 forming the infusion bag and the second film 2 forming the infusion bag, due to the wall thickness, the two films will not contact and will form a cavity. After the liquid medicine in the medicine bag decreases, a liquid medicine flow channel 4 will be formed here. The liquid medicine flow channel 4 is connected to the hose interface 3, and at the same time, the first pattern 11 on the first film 1 forming the infusion bag and the second pattern 22 on the second film 2 forming the infusion bag are both connected to the liquid medicine flow channel 4.
[0026] In this way, after the liquid medicine in the medicine bag decreases, the liquid medicine can flow along the texture, first flow to the circumferential liquid medicine flow channel 4, then converge to the hose interface 3, and then be pumped out to the external infusion pipeline by the transmission mechanism of the electronic infusion pump.
[0027] Since the textures of the two films forming the infusion bag are cross-shaped, around the infusion bag, the texture of the inner film on each surface will be in the same direction as the flow direction of the liquid medicine, making it easier for the liquid medicine to flow.
[0028] For the infusion bag of the present invention, compared with the traditional infusion bag formed by two films with the same texture or a single-sided cross-texture, since the texture on one side is always in the same direction as the flow direction, the actual liquid medicine flow channel area formed in the flow direction is larger.
[0029] The infusion bag of the present invention is applicable to an electronic infusion pump and can also be used for a medicine bag that infuses by the gravity of the liquid medicine.
[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in this embodiment, the cross angle of the planar projections of the first pattern and the second pattern is α, and α is any value other than 90 degrees. As long as the first pattern and the second pattern are not in the same direction, the spatial cross state of the first pattern and the second pattern can be achieved.
[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or Embodiment 2 is that in this embodiment, the first pattern and the second pattern do not adopt straight patterns, but adopt wave patterns with a certain length.
[0032] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be modified or equivalently replaced, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.
[0033] If terms such as "first" and "second" are used in this article to define components, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Without additional statements, the above terms have no special meanings.
[0034] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
Claims
1. An infusion bag for an electronic infusion pump that can reduce residual liquid medicine, comprising a tube interface and two infusion bag component membranes, the three being connected together to form an infusion bag, characterized in that: The two infusion bag composition membranes are divided into infusion bag composition membrane 1 and infusion bag composition membrane 2. The inner surface of infusion bag composition membrane 1 is regularly arranged with long-direction texture 1, and the inner surface of infusion bag composition membrane 2 is regularly arranged with long-direction texture 2. Texture 1 and texture 2 are in a cross state in space.
2. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to claim 1, characterized in that: The infusion bag component membrane 1 and the infusion bag component membrane 2 form a cavity at the circumferential joint, and after the medicine liquid in the medicine bag is reduced, a medicine liquid flow channel is formed in the cavity; the medicine liquid flow channel is connected to the tube interface, and at the same time, the texture 1 on the infusion bag component membrane 1 and the texture 2 on the infusion bag component membrane 2 are both connected to the medicine liquid flow channel.
3. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to claim 2, characterized in that: The tube interface, the first infusion bag component membrane and the second infusion bag component membrane are thermally welded together.
4. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to any one of claims 1 to 3, characterized in that: The planar projections of the lines 1 and 2 are crossed at 90 degrees.
5. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to claim 4, characterized in that: The first line is a straight line, and is parallel to the liquid outlet direction of the pipe interface; the second line is a straight line, and is perpendicular to the liquid outlet direction of the pipe interface.
6. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to any one of claims 1 to 3, characterized in that: The cross sections of the line 1 and the line 2 are arc-shaped protrusions.
7. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to any one of claims 1 to 3, characterized in that: The pipe interface is a hose interface.
8. The infusion bag for an electronic infusion pump capable of reducing residual liquid medicine according to any one of claims 1 to 3, characterized in that: The first pattern is a wavy pattern, and the second pattern is a wavy pattern.