Glue injection cover of dialyzer
By setting grooves and slots on the dialyzer's glue filling cap, the problem of polyurethane glue being unable to enter the hollow fiber membrane was solved, effectively separating the blood chamber and the dialysate chamber, reducing the risk of pore blockage and membrane rupture, and improving the reliability and safety of the glue filling process.
Patent Information
- Application Number
- CN202422815611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Because the existing dialyzer filling cap is tightly fitted to the hollow fiber membrane, the polyurethane adhesive has difficulty penetrating into the dense internal area of the membrane fibers. This results in the blood chamber and dialysate chamber not being effectively separated, and increasing centrifugal force may lead to the risk of pore blockage or membrane fiber damage.
A dialyzer glue injection cap was designed, which has multiple grooves and slots on the glue injection cap. The material is medical-grade plastic. The groove depth is 0.2mm to 0.5mm. The slots and grooves are arranged alternately to provide uniform support and glue flow path. The hollow fiber membrane is an electrothermal sealing film, and the polyurethane glue flows along the fiber direction.
It effectively reduces the possibility of insufficient polyurethane adhesive filling and film breakage, reduces the occurrence of pore blockage, and improves the reliability and safety of the adhesive injection process.
Smart Images
Figure CN223641104U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dialyzer technical field especially relates to a dialyzer glue injection cover. BACKGROUND
[0002] The existing dialyzer glue injection cover is mainly used in the centrifugal glue injection process, polyurethane glue is injected into the inside of dialyzer, makes it solidify at the both ends of dialyzer, and separates blood chamber and dialysate chamber. However, the existing glue injection cover has the following problems: because the glue injection cover is closely attached between the hollow fiber membrane, and the membrane bundle is relatively dense, the polyurethane glue is difficult to penetrate into the internal area of the hollow fiber membrane. This leads to the polyurethane glue cannot effectively separate the blood chamber and the dialysate chamber. If the centrifugal force is increased in order to make the polyurethane glue enter the dense area of the membrane wire, the risk of hole blockage or membrane wire damage may increase.
[0003] Based on this, in order to solve the above technical defects, a dialyzer glue injection cover is provided. INVENTION CONTENTS
[0004] In order to overcome the shortcomings of the existing glue injection cover, which is closely attached to the hollow fiber membrane, and the polyurethane glue is difficult to enter the dense internal area of the membrane wire, resulting in the polyurethane glue cannot separate the blood chamber and the dialysate chamber, the technical problem of the utility model is to provide a dialyzer glue injection cover.
[0005] A dialyzer glue injection cover, comprising a dialysate pipe, a glue injection cover, a hollow fiber membrane and a groove block, the glue injection cover is clamped on the dialyzer shell, the dialysate pipe is connected with the dialyzer shell and communicates, the hollow fiber membrane is connected inside the dialyzer shell, a plurality of grooves are evenly arranged on the glue injection cover, a plurality of groove blocks are arranged on the glue injection cover, and the groove blocks are distributed at intervals.
[0006] Further explanation, the groove depth is 0.2mm to 0.5mm.
[0007] Further explanation, the hollow fiber membrane is an electric heating sealing membrane.
[0008] Further explanation, the opening diameter of the glue injection cover is slightly larger than the diameter of the dialyzer shell.
[0009] Further explanation, the number of groove blocks and grooves is at least four, and the groove blocks and grooves are alternately arranged to provide uniform support and glue flow path.
[0010] Further explanation, the material of the glue injection cover is medical grade plastic to ensure biocompatibility and chemical stability.
[0011] The beneficial effects of this utility model are as follows: 1. The polyurethane adhesive flows in from the sintered end face of the hollow fiber membrane and flows along the direction of the hollow fiber membrane fibers, which reduces the resistance of the polyurethane adhesive during the flow process, thereby effectively reducing the problem of insufficient polyurethane adhesive filling.
[0012] 2. The polyurethane adhesive flows in from the sintering end face of the hollow fiber membrane and flows along the direction of the hollow fiber membrane fibers, which reduces the force between the polyurethane adhesive and the side of the hollow fiber membrane, thereby reducing the possibility of the hollow fiber membrane being torn and effectively avoiding the occurrence of membrane breakage.
[0013] 3. The polyurethane adhesive flows in from the sintered end face of the hollow fiber membrane and flows along the direction of the hollow fiber membrane fibers. This also reduces the interaction force between the polyurethane adhesive and the side of the hollow fiber membrane, making it difficult for the polyurethane adhesive to penetrate into the membrane, thereby effectively reducing the occurrence of pore blockage problems. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a partial sectional view of the present invention.
[0016] Figure 3 This is a schematic diagram of the first structure of the glue-filling cap of this utility model.
[0017] Figure 4 This is a schematic diagram of the second structure of the glue-injection cap of this utility model.
[0018] The markings in the attached diagram are: 1: Dialysis fluid tube, 2: Gel filler cap, 3: Hollow fiber membrane, 4: Tank block, 5: Groove. Detailed Implementation
[0019] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0020] Example: A dialyzer filling cap, such as Figures 1-4 As shown, the dialyzer includes a dialysate tubing 1, a glue-filling cap 2, a hollow fiber membrane 3, and groove blocks 4. The glue-filling cap 2 is snapped onto the dialyzer housing. The opening diameter of the glue-filling cap 2 is slightly larger than the diameter of the dialyzer housing, and the material of the glue-filling cap 2 is medical-grade plastic to ensure biocompatibility and chemical stability. The dialysate tubing 1 is connected and communicates with the dialyzer housing. The hollow fiber membrane 3, located inside the dialyzer housing, is connected to the glue-filling cap 2. The hollow fiber membrane 3 is an electrothermal sealing membrane. Multiple grooves 5 are evenly distributed around the glue-filling cap 2, with a depth of 0.2 mm to 0.5 mm. Multiple groove blocks 4 are also provided on the glue-filling cap 2. The groove blocks 4 are spaced apart from the grooves 5 to provide uniform support and glue flow path.
[0021] In use, the hollow fiber membrane 3 module, which has been subjected to the electrothermal sealing process, is first assembled with the glue injection cap 2 to form an assembly as shown in Figure 1 Fig. 2. The assembly is then placed in a centrifuge bowl for centrifugal glue injection. The polyurethane glue enters through the dialysate tube 1 on the dialyzer housing. Under the action of centrifugal force, the polyurethane glue flows along the housing wall to the gap between the glue injection cap 2 and the hollow fiber membrane 3. Since the glue injection cap 2 is provided with grooves 5 at the bottom, the polyurethane glue flows into the gap between the hollow fiber membrane 3 and the glue injection cap 2 along the grooves 5. Since the hollow fiber membrane 3 is electrothermally sealed, the end faces are sintered together, and the hollow fiber membrane 3 is stopped by the raised portion of the glue injection cap 2, thereby ensuring that the grooves 5 have sufficient space for the polyurethane glue to flow in. As the polyurethane glue continues to be injected, the polyurethane glue fills up from the bottom of the glue injection cap 2, the grooves 5, and the blocks 4, and eventually enters from the sintered bottom of the hollow fiber membrane 3, until the polyurethane glue fills to a thickness of 14 mm to 19 mm, at which point the glue injection process is complete.
[0022] It should be understood that the above description is for illustrative purposes only and is not meant to limit the present application. Those skilled in the art will understand that variations of the present application will be included within the scope of the claims herein.
Claims
1. A dialyzer filling cap, characterized in that: It includes a dialysate tube (1), a glue-filling cap (2), a hollow fiber membrane (3), and a groove block (4). The glue-filling cap (2) is snapped onto the dialyzer shell. The dialysate tube (1) is connected to and communicates with the dialyzer shell. The hollow fiber membrane (3) located inside the dialyzer shell is connected to the glue-filling cap (2). Multiple grooves (5) are evenly opened around the glue-filling cap (2). Multiple groove blocks (4) are also provided on the glue-filling cap (2). The groove blocks (4) and the grooves (5) are distributed alternately.
2. The dialyzer filling cap according to claim 1, characterized in that: The groove (5) has a depth of 0.2 mm to 0.5 mm.
3. The dialyzer filling cap according to claim 2, characterized in that: Hollow fiber membrane (3) is an electrothermal sealing membrane.
4. A dialyzer filling cap according to claim 3, characterized in that: The opening diameter of the glue-filled cap (2) is slightly larger than the diameter of the dialyzer shell.
5. A dialyzer filling cap according to claim 4, characterized in that: a groove... The number of blocks (4) and grooves (5) is at least four, and the blocks (4) and grooves (5) are arranged alternately to provide uniform support and glue flow path.
6. A dialyzer filling cap according to claim 5, characterized in that: The material of the glue-filled cap (2) is medical-grade plastic to ensure biocompatibility and chemical stability.