Subcutaneous indwelling hemodialysis port and assembly thereof

Abstract

The invention relates to the technical field of hemodialysis, and discloses a subcutaneous indwelling hemodialysis port and an assembly thereof, and relates to the technical field of hemodialysis, the subcutaneous indwelling hemodialysis port comprises an indwelling base, a puncture partition, a leather bag strip, a liquid storage box, a positioning assembly and a needle inserting assembly, the puncture partition is installed on the indwelling base, and liquid storage is fixed to the bottom of the puncture partition; the independent closed liquid storage box is adopted, when the puncture partition and the indwelling base are installed, the liquid storage box is brought into the indwelling base, a thin film at the bottom of the liquid storage box is punctured by the barbs through pressing, bonding is carried out through flowing-out medical sterile glue, meanwhile, liquid is injected between the puncture partition and the indwelling base, the puncture partition is supported, and the puncture partition and the indwelling base are fixed. Meanwhile, the rubber ring can be punctured by the puncture head, rapid bonding of the edge of the indwelling base on the edge of the puncture partition is achieved, leather bag strips can be filled, the fitness of the installation position is improved, and therefore the installation cleanliness of the liquid storage box in the natural environment is guaranteed while the installation speed is increased, and the use safety of a patient is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis, in particular to a subcutaneous indwelling hemodialysis port and a component thereof. Background Art

[0002] Hemodialysis is a medical procedure used to treat renal failure. Its main purpose is to remove waste, toxins and excess water from the blood and help maintain electrolyte balance in the body. In traditional hemodialysis operations, arteriovenous fistulas are created remotely in the upper limbs. With the help of arterial pressure, the veins are arterialized, blood flow rate is increased, and it is easier to puncture the veins during hemodialysis. With long-term use, arteriovenous fistulas are prone to failure. Therefore, subcutaneous hemodialysis ports have emerged to solve the problem of repeated puncture of blood vessels in traditional methods, which causes damage to blood vessels.

[0003] For example, the Chinese invention patent with application publication number CN118697961A discloses a subcutaneous indwelling hemodialysis port and its components, including a fixing seat, a puncture septum and a connecting tube, the upper side of the fixing seat is integrally formed with a liquid storage shell; the puncture septum is fixed to the upper side of the fixing seat by an adhesive clip, and the puncture septum sets the liquid storage shell cover in a sealed space between the puncture septum and the fixing seat; the puncture septum includes an upper diaphragm, a middle diaphragm and a lower diaphragm arranged in sequence from top to bottom, and the side of the middle diaphragm opposite to the upper diaphragm and the lower diaphragm is provided with staggered oblique teeth, and the elasticity of the middle diaphragm is greater than the elasticity of the upper diaphragm and the lower diaphragm; the subcutaneous indwelling hemodialysis port assembly includes the aforementioned subcutaneous indwelling hemodialysis port, and a sterile puncture needle, and the sterile puncture needle obliquely passes through the puncture septum; the present invention has the advantages of simple operation and convenient use.

[0004] However, in the above technology, the liquid storage shell and the fixing seat are integrally formed. When the puncture septum is fixed to the fixing seat, since the puncture septum is made of flexible material, a depression will be generated in the middle, causing the inverted U-shaped connection to tilt or shift, making it impossible for the edge of the liquid storage shell to be accurately aligned in the inverted U-shaped connection, thereby causing the second clamping member and the first clamping member to be unable to quickly engage with each other, and the top interface of the liquid storage shell and the puncture septum are installed by post-engaging and bonding, resulting in the need to rely on a sterile space for assembly operations during the installation process, otherwise bacteria and dust will enter the liquid storage shell, posing a great hidden danger to patients. At the same time, the three-layer diaphragm is deformed and then fixed by oblique teeth. Although the puncture holes can be staggered to achieve a sealing effect, the repeated irregular angle perforations will result in crossing of the puncture points, which can easily cause the diaphragm to rupture, posing a certain risk of use. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a subcutaneous indwelling hemodialysis port and its components, which have the advantages of being able to ensure the cleanliness of the interior of the liquid storage shell while realizing rapid assembly of the hemodialysis port in a natural environment, and being able to avoid cross-puncture and diaphragm rupture during repeated irregular puncture operations, thereby solving the problem in the prior art of achieving rapid assembly while ensuring the cleanliness of the interior of the liquid storage shell and irregular repeated cross-puncture, which easily causes diaphragm rupture.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a subcutaneous hemodialysis port and its components, including a retention base, a puncture septum, a bladder strip, a liquid storage box, a positioning assembly and a needle assembly. The retention base is equipped with a puncture septum, the bottom of which is fixed with a liquid storage box, and the edge of the retention base is provided with a sewn circular hole. The dialysis port and the components are installed subcutaneously through the circular hole by using a special medical suture thread.

[0009] Stabilizing holes are opened on both sides of the retention base, and rubber tubes are fixed in the stabilizing holes. Liquid is transported from the rubber tube to between the retention base and the puncture septum, so that the puncture septum expands. At the same time, the rubber tube is elastic and can press the gap at the connection between the stabilizing hole and the rubber tube, and the gap is bonded by medical glue.

[0010] The bottom of the retention base is provided with an annular groove along the edge, and a plurality of connecting holes communicating with the retention base are provided in the annular groove. A one-way valve is fixed in the connecting hole to prevent liquid from flowing back into the retention base and the puncture septum.

[0011] A bladder strip is installed in the annular groove, and the bladder strip covers the side of the one-way valve. Liquid enters the bladder strip through the one-way valve, expands, and fits to the installation position, thereby improving the installation compliance.

[0012] The liquid storage box includes a liquid storage box fixed at the bottom of the puncture space, a hose is fixed on the liquid storage box, the hose passes through the rubber tube, one end of the hose is connected to the liquid storage box, and the other end is sutured to the arterial or venous incision, so that the liquid storage box serves as a transit hub for hemodialysis operations, facilitating the easy input and discharge of dialysate during treatment.

[0013] A positioning component for fixing the puncture septum is arranged in the retention base.

[0014] As a further improvement of the above scheme, the puncture septum is arranged from top to bottom in sequence by diaphragm one, diaphragm two and diaphragm three, the elasticity of diaphragm one is lower than that of diaphragm two, and the density of diaphragm one is greater than that of diaphragm two, while diaphragm three has no elasticity.

[0015] Through the above technical scheme, diaphragm one and diaphragm two can both produce deformation, diaphragm three does not produce deformation, but the deformation of diaphragm one is smaller than that of diaphragm two. The density of diaphragm one can maintain the stability of the puncture angle of the puncture needle. The elasticity and deformation of diaphragm two are the largest. When the puncture needle is pulled out, the pierced holes can be staggered with the holes pierced by diaphragms one and three.

[0016] As a further improvement of the above scheme, a plurality of concave holes are opened on the upper surface of diaphragm three, serrated hooks are arranged on the concave holes, and convex membranes are fixed to the edges of the concave holes. The convex membranes are covered on the sides of the serrated hooks, and the convex membranes can lift up diaphragms two and three.

[0017] Through the above technical solution, the convex membrane can lift up the diaphragm 2 and the diaphragm 1 in the expanded state, and when touching the puncture septum, it is convenient for medical staff to know the position of the puncture in advance, thereby realizing the pre-calibration of the puncture position.

[0018] As a further improvement of the above scheme, a film is bonded to the bottom of the liquid storage box, and a cavity for storing medical glue is provided between the film and the liquid storage box. At the same time, a stabilizing groove is opened in the retention base, and barbs are provided in the stabilizing groove. The liquid storage box is mounted in the stabilizing groove, and the film is located above the barbs.

[0019] Through the above technical solution, when the film punctures the hook, the glue flows out and the bottom of the liquid storage box is bonded and fixed in the stable groove.

[0020] As a further improvement of the above solution, a positioning groove is provided at the inner edge of the interface of the retention base, and a rubber ring is fixed to the edge of the puncture septum, and the rubber ring is clamped in the positioning groove.

[0021] Through the above technical solution, the rubber ring is clamped in the positioning groove to achieve the initial installation between the puncture septum and the retention base.

[0022] As a further improvement of the above scheme, the bottom of the positioning groove is movably connected with a positioning component, and the positioning component includes a stabilizing rod passing through the positioning groove, and a spike is fixed at one end of the stabilizing rod, and one end of the spike is located at the bottom of the rubber ring.

[0023] Through the above technical solution, the thorn head can pierce the rubber ring, allowing the glue to flow out, and the rubber ring is completely bonded to the positioning groove.

[0024] As a further improvement of the above solution, a floating sheet is fixed to the side of the stabilizing rod, and the floating sheet is fitted on the interface of the positioning groove through which the stabilizing rod passes.

[0025] Through the above technical solution, the floating sheet generates buoyancy during the process of pouring liquid into the retention base, so that the stabilizing rod drives the piercing head to pierce the rubber ring.

[0026] As a further improvement of the above solution, a sleeve hole is opened in the retention base, and one end of the stabilizing rod is movably sleeved in the sleeve hole.

[0027] Through the above technical solution, when the stabilizing rod moves upward, the bottom end of the stabilizing rod moves upward from the bottom of the sleeve hole, thereby improving the stability of the movement of the stabilizing rod.

[0028] As a further improvement of the above scheme, a needle assembly is movably connected to the puncture septum, and the needle assembly includes a puncture needle that pierces the puncture septum and the liquid storage box. A connector is installed at one end of the puncture needle, and an infusion tube is installed at one end of the connector.

[0029] Through the above technical solution, the tail end of the puncture needle is plugged and installed with the connector, so that the infusion tube can output the medicine from the puncture needle.

[0030] As a further improvement of the above solution, a sleeve ring is fixed to the side of the connecting piece, and a support rod is rotatably connected to the side of the sleeve ring, and one end of the support rod is supported on the puncture septum.

[0031] Through the above technical solution, the support rod is used to support the puncture angle of the puncture needle.

[0032] Compared with the prior art, the present invention provides a subcutaneous hemodialysis port and its components, which have the following beneficial effects:

[0033] 1. The subcutaneous indwelling hemodialysis port and its components adopt an independently closed liquid storage box, the top surface of the box body is fixed to the bottom of the puncture septum, so that when the puncture septum and the indwelling base are installed, the liquid storage box is brought into the indwelling base, and the barbs are pressed to pierce the bottom film of the liquid storage box, and the medical sterile glue that flows out is used for bonding. At the same time, liquid is injected between the puncture septum and the indwelling base to support the puncture septum, and the barb head can pierce the rubber ring to achieve rapid bonding of the edge of the puncture septum and the edge of the indwelling base, and the leather bag strip can be filled to increase the fit of the installation position, thereby improving the installation speed while ensuring the cleanliness of the liquid storage box installed in the natural environment, effectively improving the safety of patient use.

[0034] 2. The subcutaneous indwelling hemodialysis port and its components are provided with a convex membrane on the diaphragm three, and the convex membrane lifts up the diaphragm two and the diaphragm one to realize the pre-calibration of the puncture point. When the puncture needle punctures at any angle, the convex membrane passed through is damaged and then sunken, so that the surfaces of the diaphragm two and the diaphragm one are flat, indicating that the position is for puncture operation, avoiding cross puncture and causing diaphragm damage. After the convex membrane is damaged, the diaphragm two and the diaphragm one are deformed to make the perforations staggered and sealed. At the same time, the puncture point on the diaphragm two is fixed by the serrated hook to avoid the puncture point from repeatedly moving between the diaphragm one and the diaphragm three, resulting in the phenomenon that the puncture point is pulled larger and then damaged, thereby avoiding the phenomenon of diaphragm damage when repeated punctures are performed at irregular angles, further improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall top structure of the device of the present invention;

[0036] Figure 2 It is a schematic diagram of the overall bottom structure of the device of the present invention;

[0037] Figure 3 This is a schematic diagram of the internal structure of the annular groove of the present invention;

[0038] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the device of the present invention;

[0039] Figure 5 It is a schematic diagram of the overall internal planar structure of the device of the present invention;

[0040] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0041] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0042] Figure 8 For the present invention Figure 5 Schematic diagram of the structure at C in the middle;

[0043] Fig. 9 This is a schematic diagram of the puncture septum deformation structure of the present invention;

[0044] Fig.10 It is a schematic diagram of the connection structure between the whole device of the present invention and the pin assembly;

[0045] Fig.11 For the present invention Fig.10 Schematic diagram of the structure at point D in the middle.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1. Retention base; 101. Stability hole; 102. Rubber tube; 103. Annular groove; 104. Communication hole; 105. One-way valve; 106. Stability groove; 107. Barb; 108. Positioning groove; 109. Socket hole;

[0048] 2. puncture septum; 201. diaphragm one; 202. diaphragm two; 203. diaphragm three; 2031. concave hole; 2032. sawtooth hook; 2033. convex dot membrane; 204. rubber ring;

[0049] 3. Leather strips;

[0050] 4. liquid storage box; 401. film; 4011. cavity; 402. hose;

[0051] 5. Positioning assembly; 501. Stabilizing rod; 502. Spiking head; 503. Floating sheet;

[0052] 6. Needle assembly; 601. Puncture needle; 602. Connector; 6021. Infusion tube; 603. Set ring; 604. Support rod. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Embodiment 1

[0055] See also Figure 1-Figure 11 As shown, a subcutaneous hemodialysis port proposed in this embodiment includes an indwelling base 1, a puncture septum 2, a bladder strip 3, a liquid storage box 4, a positioning assembly 5 and a needle assembly 6. The indwelling base 1 is installed with the puncture septum 2, and the bottom of the puncture septum 2 is fixed with a liquid storage box 4.

[0056] Specific reference Figure 1 As shown, stabilizing holes 101 are opened on both sides of the retention base 1, and a rubber tube 102 is fixed in the stabilizing hole 101. The rubber tube 102 is made of medical grade rubber material. The contact surface of the rubber tube 102 and the stabilizing hole 101 is bonded by medical glue. Liquid can be transported between the retention base 1 and the puncture septum 2 through the rubber tube 102, so that the puncture septum 2 expands and bulges.

[0057] Specific reference Figure 5 and Figure 7As shown, the liquid storage box 4 includes a liquid storage box 4 fixed at the bottom of the puncture partition 2, and a hose 402 is fixed on the liquid storage box 4. The hose 402 passes through the rubber tube 102, and the contact surface of the hose 402 and the rubber tube 102 is adhered by medical-grade glue to prevent the internal liquid from leaking from the connecting gap and improve the stability of the hose 402. The hose 402 is fixed at both ends of the liquid storage box 4. The hose 402 is made of medical-grade silicone. One end of the hose 402 is connected to the liquid storage box 4, and the other end is sutured to the arterial or venous incision, so that the liquid storage box 4 serves as a transit hub for hemodialysis operations, which is convenient for easy input and discharge of dialysate during treatment, and avoids the effect of the puncture needle directly puncturing the blood vessel multiple times during the traditional dialysis process, causing damage to the blood vessel.

[0058] Furthermore, the same operation as above (puncture needle punctures the puncture septum 2 and the liquid storage box 4) can also be used to complete other operations related to hemodialysis (for example, drug injection).

[0059] Furthermore, the puncture septum 2 is arranged from top to bottom in sequence by diaphragm 1 201, diaphragm 2 202 and diaphragm 3 203, the elasticity of diaphragm 1 201 is lower than that of diaphragm 2 202, and the density of diaphragm 1 201 is greater than that of diaphragm 2 202, while diaphragm 3 203 has no elasticity.

[0060] More specifically, when the upper surface of the puncture septum 2 is pressed, both the diaphragm 1 201 and the diaphragm 2 202 are deformed, and the diaphragm 3 is not deformed. However, the deformation of the diaphragm 1 201 is smaller than that of the diaphragm 2 202.

[0061] During puncture, the density of diaphragm 1 201 can maintain the stability of the puncture angle of the puncture needle, avoiding the needle tip from deviating during movement and causing the diaphragm to be scratched. Diaphragm 202 has the highest elasticity and a larger deformation amount. When the puncture needle is withdrawn, the punctured hole can be better staggered with the holes punctured in diaphragm 1 201 and diaphragm 3 203, avoiding the effect of blood and drug seepage.

[0062] Furthermore, a plurality of recessed holes 2031 are provided on the upper surface of the diaphragm three 203, and a serrated hook 2032 is provided on the recessed hole 2031. A convex film 2033 is fixed to the edge of the recessed hole 2031, and the convex film 2033 is covered on the side of the serrated hook 2032. The convex film 2033 can lift up the diaphragm two 202 and the diaphragm three 203.

[0063] More specifically, the convex membrane 2033 and the concave hole 2031 form an independent sealed space, in which physiological saline is stored, so that the convex membrane 2033 can lift up the diaphragm 202 and the diaphragm 1 201 when it is expanded (when physiological saline is stored in the sealed space). When touching the puncture diaphragm 2, medical staff can know the puncture position in advance, realize the pre-calibration of the puncture position, improve the accuracy of puncture, and avoid the hole diameter becoming larger after repeated punctures at the same position, which causes blood and drugs to seep into the diaphragm.

[0064] When the puncture needle 601 is inserted into the liquid storage box 4 through the convex film 2033, the convex film 2033 ruptures, and the physiological saline in the sealed space is released between the diaphragm 202 and the diaphragm 3 203. At the same time, the diaphragm 202 and the diaphragm 3 203 are lowered to the position originally lifted by the convex film 2033, and in the process of descending, the diaphragm 202 is hung on the side of the puncture needle 601 by the larger deformation force of the diaphragm 202 and the smaller deformation force of the diaphragm 1 201. When the puncture needle 601 is completely pulled out, the deformation force is released, so that one side of the diaphragm 202 is hung on the serrated hook 2032, and the puncture holes on the diaphragm 1 201 and the diaphragm 2 202 are staggered and sealed.

[0065] Furthermore, a film 401 is bonded to the bottom of the liquid storage box 4, and a cavity 4011 for storing medical glue is provided between the film 401 and the liquid storage box 4. At the same time, a stabilizing groove 106 is opened in the retention base 1, and a barb 107 is provided in the stabilizing groove 106. The liquid storage box 4 is mounted in the stabilizing groove 106, and the film 401 is located above the barb 107.

[0066] More specifically, when the liquid storage box 4 is installed in the stabilizing groove 106, by pressing the puncture partition 2, the liquid storage box 4 moves downward under force, so that the barb 107 punctures the film 401, and the glue in the cavity 4011 flows out, and the bottom of the liquid storage box 4 is bonded and fixed in the stabilizing groove 106, thereby improving the installation convenience and stability of the liquid storage box 4.

[0067] Furthermore, a positioning groove 108 is provided at the inner edge of the interface of the retention base 1 , and a rubber ring 204 is fixed to the edge of the puncture septum 2 , and the rubber ring 204 is clamped in the positioning groove 108 .

[0068] More specifically, the rubber ring 204 is elastic and has a thin wall. At the same time, the width of the rubber ring 204 matches the width of the positioning groove 108. The rubber ring 204 is snapped into the positioning groove 108 to achieve preliminary installation between the puncture septum 2 and the retention base 1.

[0069] Embodiment 2

[0070] See also Figure 1-Figure 2 and Figure 5 as well as Figure 7As shown, the subcutaneously retained hemodialysis port mentioned in this embodiment, on the basis of the first embodiment, also includes: an annular groove 103 is provided along the edge of the bottom of the retention base 1, a plurality of connecting holes 104 which are interconnected with the retention base 1 are provided in the annular groove 103, a one-way valve 105 is fixed in the connecting hole 104, and the design of the one-way valve 105 allows liquid to flow into the annular groove 103 through the one-way valve 105, and the liquid in the annular groove 103 cannot flow back.

[0071] A bladder strip 3 is installed in the annular groove 103, and the bladder strip 3 covers the side of the one-way valve 105. After the liquid is injected between the puncture septum 2 and the retention base 1 and expands, an extrusion force is generated, so that part of the liquid between the puncture septum 2 and the retention base 1 passes through the one-way valve 105 and enters the bladder strip 3, causing the bladder strip 3 to expand. When the dialysis port is installed, the bladder strip 3 expands and fits the installation position, thereby improving the fit of the installation.

[0072] Embodiment 3

[0073] See also Figure 5 and Figure 8 As shown, the subcutaneously indwelling hemodialysis port mentioned in this embodiment, on the basis of the second embodiment, further includes that a positioning assembly 5 for fixing the puncture septum 2 is provided in the indwelling base 1 .

[0074] Furthermore, the bottom of the positioning groove 108 is movably connected with a positioning assembly 5, and the positioning assembly 5 includes a stabilizing rod 501 that passes through the positioning groove 108, and a spike 502 is fixed at one end of the stabilizing rod 501, and one end of the spike 502 is located at the bottom of the rubber ring 204.

[0075] More specifically, the rubber ring 204 forms an independent vacuum cavity, which is filled with medical-grade glue. The stabilizing rod 501 is vertically arranged, and the piercing head 502 is driven to move upward by the stabilizing rod 501, so that the glue in the vacuum cavity flows out, and the rubber ring 204 is completely bonded to the positioning groove 108, thereby improving the stability and sealing of the installation between the puncture septum 2 and the retention base 1.

[0076] Furthermore, a floating sheet 503 is fixed to the side of the stabilizing rod 501 , and the floating sheet 503 is attached to the interface of the stabilizing rod 501 passing through the positioning groove 108 .

[0077] More specifically, when liquid is injected from the rubber tube into the space between the puncture septum 2 and the retention base 1 , the buoyancy of the floating sheet 503 causes the stabilizing rod 501 to drive the piercing head 502 to move upward, thereby puncturing the rubber ring 204 .

[0078] Furthermore, a sleeve hole 109 is provided in the retention base 1 , and one end of the stabilizing rod 501 is movably sleeved in the sleeve hole 109 .

[0079] More specifically, when the stabilizing rod 501 moves upward, the bottom end of the stabilizing rod 501 moves upward from the bottom of the sleeve hole 109, thereby improving the stability of the movement of the stabilizing rod 501 and allowing the spike 502 installed on the top of the stabilizing rod 501 to accurately pierce the rubber ring 204.

[0080] Embodiment 4

[0081] See also Figure 10-11 As shown, the subcutaneously indwelling hemodialysis port assembly proposed in this embodiment, on the basis of the first embodiment, also includes: a needle assembly 6 is movably connected to the puncture septum 2, the needle assembly 6 includes a puncture needle 601 that pierces the puncture septum 2 and the liquid storage box 4, one end of the puncture needle 601 is installed with a connector 602, and one end of the connector 602 is installed with an infusion tube 6021.

[0082] More specifically, the tail end of the puncture needle 601 is plugged into the connector 602, so that the infusion tube 6021 can output the medicine from the puncture needle 601, so that after the puncture needle 601 punctures the puncture septum 2 and the liquid storage box 4, the medicine is input into the liquid storage box 4.

[0083] Furthermore, a sleeve ring 603 is fixed to the side of the connecting member 602 , and a support rod 604 is rotatably connected to the side of the sleeve ring 603 , and one end of the support rod 604 is supported on the puncture septum 2 .

[0084] More specifically, the inside of the sleeve ring 603 is a hollow elastic structure, which can be stably sleeved on the side of the connecting piece 602. After the puncture needle 601 punctures the puncture septum 2 and the liquid storage box 4, the support rod 604 is rotated so that one end of the support rod 604 fits on the puncture septum 2, thereby supporting the puncture angle of the puncture needle 601.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subcutaneously indwelling hemodialysis port, comprising an indwelling base (1), a puncture septum (2), a bladder strip (3), a liquid storage box (4), a positioning assembly (5) and a needle assembly (6), characterized in that: The retention base (1) is provided with a puncture septum (2), and a liquid storage box (4) is fixed at the bottom of the puncture septum (2); The retention base (1) is provided with stabilizing holes (101) on two opposite sides thereof, and a rubber tube (102) is fixed in the stabilizing hole (101); The bottom of the retention base (1) is provided with an annular groove (103) along the edge thereof, a plurality of communication holes (104) communicating with the retention base (1) are provided in the annular groove (103), and a one-way valve (105) is fixed in the communication hole (104); A bladder strip (3) is installed in the annular groove (103), and the bladder strip (3) covers the side of the one-way valve (105); The liquid storage box (4) comprises a bottom portion fixed to the puncture septum (2), a hose (402) being fixed to the liquid storage box (4), and the hose (402) passing through the rubber tube (102); A positioning component (5) for fixing the punctured septum (2) is arranged inside the retention base (1).

2. A subcutaneously placed hemodialysis port according to claim 1, characterized in that: The puncture septum (2) is composed of diaphragm one (201), diaphragm two (202) and diaphragm three (203) arranged in sequence from top to bottom, the elasticity of diaphragm one (201) is lower than that of diaphragm two (202), and the density of diaphragm one (201) is greater than that of diaphragm two (202), while diaphragm three (203) has no elasticity.

3. A subcutaneously placed hemodialysis port according to claim 2, characterized in that: A plurality of concave holes (2031) are provided on the upper surface of the diaphragm three (203), a sawtooth hook (2032) is provided on the concave hole (2031), a convex film (2033) is fixed to the edge of the concave hole (2031), the convex film (2033) is wrapped around the side of the sawtooth hook (2032), and the convex film (2033) can lift up the diaphragm two (202) and the diaphragm three (203).

4. The subcutaneous hemodialysis port according to claim 1, characterized in that: A film (401) is bonded to the bottom of the liquid storage box (4), and a cavity (4011) for storing medical glue is provided between the film (401) and the liquid storage box (4). At the same time, a stabilizing groove (106) is provided in the retention base (1), and barbs (107) are provided in the stabilizing groove (106). The liquid storage box (4) is sleeved in the stabilizing groove (106), and the film (401) is located above the barbs (107).

5. A subcutaneously placed hemodialysis port according to claim 4, characterized in that: The inner edge of the interface of the retention base (1) is provided with a positioning groove (108), and the edge of the puncture septum (2) is fixed with a rubber ring (204), and the rubber ring (204) is clamped in the positioning groove (108).

6. The subcutaneously placed hemodialysis port according to claim 5, characterized in that: The bottom of the positioning groove (108) is movably connected to a positioning assembly (5), the positioning assembly (5) comprising a stabilizing rod (501) penetrating the positioning groove (108), a spike head (502) being fixed to one end of the stabilizing rod (501), and one end of the spike head (502) being located at the bottom of the rubber ring (204).

7. The subcutaneously placed hemodialysis port according to claim 6, characterized in that: A floating sheet (503) is fixed to the side of the stabilizing rod (501), and the floating sheet (503) is fitted on the interface of the positioning groove (108) through which the stabilizing rod (501) passes.

8. The subcutaneously placed hemodialysis port according to claim 5, characterized in that: A sleeve hole (109) is provided in the retention base (1), and one end of the stabilizing rod (501) is movably sleeved in the sleeve hole (109).

9. A subcutaneously placed hemodialysis port assembly, characterized in that: The invention comprises a subcutaneously indwelling hemodialysis port as claimed in any one of claims 1 to 8, and a needle assembly (6) movably connected to the puncture septum (2), wherein the needle assembly (6) comprises a puncture needle (601) for piercing the puncture septum (2) and the liquid storage box (4), a connector (602) being installed at one end of the puncture needle (601), and an infusion tube (6021) being installed at one end of the connector (602).

10. The subcutaneous hemodialysis port assembly according to claim 9, characterized in that: A sleeve ring (603) is fixed to the side of the connecting piece (602), and a support rod (604) is rotatably connected to the side of the sleeve ring (603), and one end of the support rod (604) is supported on the puncture septum (2).

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