CN116059471A - Implanted central venous dialysis port - Google Patents
Implanted central venous dialysis port Download PDFInfo
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- CN116059471A CN116059471A CN202211523486.8A CN202211523486A CN116059471A CN 116059471 A CN116059471 A CN 116059471A CN 202211523486 A CN202211523486 A CN 202211523486A CN 116059471 A CN116059471 A CN 116059471A
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- 238000001990 intravenous administration Methods 0.000 claims abstract description 11
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- 229920002635 polyurethane Polymers 0.000 claims description 3
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to an implantable central venous dialysis port, which comprises a port body part (1), a locking buckle (2) and a double-cavity venous catheter (3); the port body part (1) comprises a port seat (10), a left end cover (11), a right end cover (12) and a puncture membrane (13), wherein the port seat (10) comprises a bottom plate (100), a port body (101) and a connecting inner tube (102), and a venous cavity (1011) and an arterial cavity (1012) are arranged in the port body (101); the double-cavity intravenous catheter (3) comprises a catheter vein end (30) and a catheter artery end (31); the venous cavity (1011) is correspondingly communicated with the catheter venous end (30) and the arterial cavity (1012) is correspondingly communicated with the catheter arterial end (31) through the locking buckle (2). The invention provides an implanted central venous dialysis port, which replaces a central venous catheter with a completely implanted port body to carry out hemodialysis, can better reduce the infection rate, is convenient to use and does not obstruct the daily life of a patient.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an implantable central venous dialysis port.
Background
Hemodialysis (HD) is one of the renal alternative therapies for patients with acute and chronic renal failure. The method comprises the steps of draining blood in a patient with renal failure to the outside, carrying out substance exchange between the blood and a dialyzate through a dialyzate containing a hollow fiber membrane, removing metabolic waste in the body, maintaining electrolyte and acid-base balance, removing excessive water in the body, and re-inputting the purified blood into the patient, thereby replacing the metabolic function of kidneys on toxins and maintaining the life of the patient.
For dialysis patients, it is of paramount importance to establish a vascular access that is unobstructed and long-term. Common vascular access is: temporary access, semi-permanent access, and permanent access. The temporary access to the patient is not considered as a way of conventional dialysis, since it is directly penetrated by a needle, only for toxic emergency dialysis patients. Semi-permanent access relies on the implantation of a central venous catheter to the patient, which is suitable for dialysis for medium and long periods. Because the catheter is implanted in the great vein, the blood flow of dialysis can be fully ensured, and the patient can perform minimally invasive surgery for catheterization, and the later dialysis has no puncture pain. However, the disadvantage is that the indwelling outer tube affects the beauty in vitro, hampers the daily life of the patient, and is susceptible to infection. Permanent vascular access generally refers to the creation of arteriovenous internal fistulae, including autologous arteriovenous internal fistulae and transplanted intravascular internal fistulae. Arteriovenous fistulae are long-term effective dialysis pathways, have sufficient blood flow, and do not affect the patient's daily activities. However, complications of the fistula are not ignored, and infection, thrombus, graft vascular aneurysm and the like may cause stenosis and failure of the internal fistula, and the internal fistula needs to be re-fistulized to continue dialysis, and heart failure of a patient can be increased to a certain extent due to the fact that the fistulization is used for "venous arterialization".
Intravenous Port (Port) is an implantable infusion set commonly used for chemotherapy administration and infusion of cancer patients. The existing transfusion port comprises a transfusion port seat unit, a puncture diaphragm and a catheter, wherein a liquid storage groove is arranged on the transfusion port seat unit, the puncture diaphragm covers the opening of the liquid storage groove, one end of the catheter is communicated with the liquid storage groove, and the other end of the catheter is communicated with a blood vessel, so that the transfusion port seat unit and the blood vessel form a passage. In the implantation operation, the catheter is led to the right atrium through the internal jugular vein or subclavian vein, the port body is buried under the chest skin, and the skin is sutured. Because the steel needle only needs to vertically penetrate through the epidermis thin layer skin to enter the dialysis membrane when in puncture every time, a passage can be formed for chemotherapy administration or transfusion, the blood vessel of a patient can be effectively protected, the puncture pain is relieved, and the implanted instrument does not influence the beauty and the daily life of the patient.
In order to overcome the defects of the prior art, the intravenous transfusion port is introduced into the hemodialysis field, and has important technical innovation and application prospect. The existing hemodialysis transfusion port is changed into a double-cavity port seat based on the original venous transfusion port, the single-cavity catheter is changed into a double-cavity catheter, and an absolute vertical port body cavity or horizontal port body cavity needle penetration mode is adopted, so that the internal hemodynamic environment and the convenient fixation of an extracorporeal dialysis needle are not comprehensively considered.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an implanted central venous dialysis port, which replaces a central venous catheter with a completely implanted port body to carry out hemodialysis, thereby better reducing the infection rate, being convenient to use and not interfering with the daily life of a patient.
The aim of the invention can be achieved by the following technical scheme:
an implantable central venous dialysis port comprises a port body part, a locking buckle and a double-cavity venous catheter;
the port body part comprises a port seat, a left end cover, a right end cover and a puncture membrane, wherein the puncture membrane is arranged at the front end of the port seat, and the left end cover and the right end cover are symmetrically arranged and are in interference fit with the port seat to form a sealed cavity;
the port seat comprises a bottom plate, a port body and a connecting inner tube, wherein the connecting inner tube is communicated with the double-cavity venous catheter, and a venous cavity and an arterial cavity are arranged in the port body;
the double-cavity intravenous catheter comprises a catheter vein end and a catheter artery end;
the venous cavity is correspondingly communicated with the venous end of the catheter and the arterial cavity is correspondingly communicated with the arterial end of the catheter through a locking buckle.
Further, the venous cavity and the arterial cavity are conical cavities with gradually reduced diameters, are symmetrically arranged in the harbor body and are not communicated, and form an included angle of 60 degrees with the horizontal plane.
Further, the puncture membrane comprises a cylinder and a conical round platform with the diameter gradually reduced, four circular bulges which are uniformly distributed are arranged on the puncture surface of the puncture membrane, the puncture area of the dialysis port can be assisted to be displayed on the body surface, the side wall of the conical round platform is attached to the inner walls of the venous cavity and the arterial cavity, and after the puncture membrane is arranged in the port body, the rear ends of the venous cavity and the arterial cavity are reserved with a cavity for storing blood.
Further, be equipped with the location keyway on the terminal surface before the harbour seat, the puncture membrane both sides are equipped with the location key for limiting the circumference rotation of puncture membrane, be equipped with the recess on left end cover and the right-hand member lid, the puncture membrane passes through the location keyway and matches with the location key and install on the harbour seat, and location keyway and recess interference fit form sealed harbour body part cavity.
Further, the connecting inner pipe is a stepped pipe, a first step and a locking ring are arranged on the outer surface of the connecting inner pipe, a cutting groove passing through the center of the inner pipe is arranged in the middle of the connecting inner pipe, and a first inner step and a second inner step which are convex are arranged on the two inner walls of the cutting groove and used for assisting in locking of the guide pipe.
Further, two D-shaped cavities are arranged in the connecting inner tube, D-shaped bent holes are arranged in the port body, the venous cavity and the arterial cavity are communicated with the D-shaped cavities through the D-shaped bent holes, the D-shaped bent holes comprise two corners, the first corner is 120 degrees, the second corner is 90 degrees, and the diameter of the D-shaped bent holes is smaller than or equal to that of the D-shaped cavities.
Further, the bottom of the locking buckle is provided with a horizontal platform, the locking buckle comprises a horn mouth and an arch-shaped shaft, the diameter of the horn mouth is gradually reduced, a stepped through hole is formed in the arch-shaped shaft, a wedge-shaped inner step is formed in the stepped through hole, the rear end face of the port seat is provided with a positioning groove, the end face of the locking buckle is provided with a positioning boss, and the port seat is connected with the locking buckle through cooperation between the positioning groove and the positioning boss.
Further, the front end face of the left end cover is of an incomplete circle, a circular through hole is formed in the front end face, a matching section overlapped with the right end cover is formed on the right side, the axial direction of the left end cover is a conical side wall with the gradually-enlarged diameter, and the right end cover and the left end cover are of a completely symmetrical structure.
Further, the included angle of two oblique sides of the bottom plate is 120 degrees, five incomplete circular sewing tables which are symmetrically distributed are arranged on the bottom plate, and each sewing table is provided with a concentric sewing hole, so that the port body can be conveniently sewn and fixed.
Further, the port seat, the left end cover, the right end cover and the locking buckle are made of polytetrafluoroethylene materials with certain hardness and good biocompatibility, the puncture membrane is made of liquid silica gel LSR materials with soft texture, puncture resistance and good biocompatibility, the double-cavity venous catheter is made of polyurethane materials with good compliance and biocompatibility, the tail end of the double-cavity venous catheter is provided with an inverted Z-shaped spiral symmetrical tip with a side hole, the recirculation of blood can be reduced while the dialysis flow can be ensured, and the basic dialysis flow is ensured under the condition that an operation error reversely connects with a dialysis loop.
Compared with the prior art, the invention has the following advantages:
(1) The invention firstly implants the double-cavity vein catheter into the central vein of a human body from the tip, then buries the whole port body part into the subcutaneous pocket of the chest wall, correspondingly connects the vein end of the catheter with the port body vein cavity, connects the artery end of the catheter with the port body artery cavity through locking buckles, and finally sews the epidermis to finish the implantation operation. Therefore, compared with a central venous catheter, the completely implanted dialysis port can well reduce infection, ensure attractive appearance and simultaneously not prevent the daily life of a patient, and after operation, the dialysis needle respectively punctures the thin epidermis and the venous cavity and the arterial cavity of the subcutaneous port body to form a hemodialysis loop, so that the puncture pain of the patient can be relieved, and the blood vessel is effectively protected.
(2) The catheter implanted in the central vein of the human body adopts the inverted Z-shaped spiral symmetrical tip with the side holes, so that the recirculation of blood is reduced while the dialysis flow is ensured, and the basic dialysis flow is ensured under the condition of wrong reverse connection of a dialysis circuit.
(3) The parts of the dialysis port are made of materials which are good in biocompatibility and meet the functional requirements of the parts, and the occurrence probability of thrombus is reduced on the premise of ensuring the safety and effectiveness of the instrument.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure of the port seat according to the present invention;
FIG. 4 is a schematic view of another embodiment of the port seat of the present invention;
FIG. 5 is a front view of the port seat of the present invention;
FIG. 6 is a rear view of the port seat of the present invention;
FIG. 7 is a schematic cross-sectional view of a port seat according to the present invention;
FIG. 8 is a schematic cross-sectional view of another embodiment of the port seat of the present invention;
FIG. 9 is a schematic view of the left end cap structure of the present invention;
FIG. 10 is a schematic view of the left end cap structure of the present invention;
FIG. 11 is a schematic view of the left end cap structure of the present invention;
FIG. 12 is a schematic illustration of the structure of a piercing membrane according to the invention;
FIG. 13 is a schematic illustration of the structure of a piercing membrane according to the invention;
FIG. 14 is a schematic view of a piercing membrane structure according to the invention;
FIG. 15 is a schematic view of a locking buckle according to the present invention;
FIG. 16 is a schematic view of a locking buckle according to the present invention;
FIG. 17 is a schematic cross-sectional view of a port portion and a catheter of the locking buckle of the present invention.
In the figure: 1 is a harbor body part; 2 is a locking buckle; 3 is a double-lumen intravenous catheter; 10 is a harbor seat; 100 is a bottom plate; 1000 is a bevel edge; 1001 is a stitching table; 1002 is a suture hole; 101 is harbor body; 1010 is a locating keyway; 1011 is the venous lumen; 1012 is the arterial lumen; 1013 is a first platform; 1014 is a second platform; 1015 is a D-shaped curved hole; 1016 is a detent; 102 is a connecting inner tube; 1020 is a first step; 1021 is a locking ring; 1022 is the first inner step; 1023 is a second inner step; 1024 are D-shaped cavities; 1025 is an inner tube slot; 11 is a left end cover; 110 is a front face; 111 is a rear end face; 112 is a through hole; 113 is a groove; 114 is a tapered sidewall; 115 is a mating cut surface; 12 is a right end cover; 13 is a piercing membrane; 130 is a cylinder; 131 is a conical round table; 132 is a male key; 133 is a sidewall; 134 is the piercing face; 135 is a circular protrusion; 20 is a horn mouth; 21 is an arch-shaped shaft; 22 is an end face; 23 is a positioning boss; 24 is a stepped through hole; 25 is a wedge-shaped inner step; 30 is the venous end; 31 is the arterial end.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in fig. 1 and 2, an implantable central venous dialysis port comprises a port body part 1, a locking buckle 2 and a double-lumen venous catheter 3; the port body part 1 comprises a port seat 10, a left end cover 11, a right end cover 12 and a puncture membrane 13, wherein the puncture membrane 13 is arranged at the front end of the port seat 10, and the left end cover 11 and the right end cover 12 are symmetrically arranged and form a sealed cavity in interference fit with the port seat 10.
As shown in fig. 3 to 8, the port seat 10 comprises a bottom plate 100, a port body 101 and a connecting inner tube 102, the port body 101 is provided with a venous cavity 1011 and an arterial cavity 1012 which are bilaterally symmetrical and form an angle of 60 degrees with the horizontal plane but are not communicated, the venous cavity 1011 and the arterial cavity 1012 are respectively communicated with two D-shaped cavities 1024 of the rear connecting inner tube 102 through D-shaped bent holes 1015, the front end surface of the port seat 10 is provided with a positioning key slot 1010, and the positioning key slot 1010 is respectively in interference fit with grooves 113 on the left end cover and the right end cover by being mutually matched with positioning keys 132 arranged on two sides of the puncture membrane 13 so as to realize the sealing installation of the end cover to the interior of the port body. The rear end face of the port seat is provided with a positioning groove 1016 matched with the positioning boss 23 on the locking buckle 2, and the port seat 10 is connected with the locking buckle 2 through the matching between the positioning groove 1016 and the positioning boss 23.
As shown in fig. 3, the included angle between two oblique sides 1000 of the bottom plate 100 is 120 °, five incomplete circular suturing platforms 1001 are symmetrically distributed on the bottom plate 100, and each suturing platform 1001 is provided with a concentric suturing hole 1002, so as to facilitate suturing and fixing of the port body.
As shown in fig. 8, the venous lumen 1011 and the arterial lumen 1012 are tapered through holes with gradually decreasing diameters; the D-shaped curved hole 1015 has two corners, the first corner is 120 °, the second corner is 90 °, and the ends of the two D-shaped curved holes 1015 are contained in the D-shaped cavity 1024 of the connecting inner tube, i.e. the diameter of the D-shaped curved hole is smaller than or equal to the diameter of the D-shaped cavity of the connecting inner tube. The connecting inner pipe 102 is a stepped pipeline, the cross section is D-shaped, the outer surface of the connecting inner pipe 102 is provided with a first step 1020 and a locking ring 1021, a cutting groove 1025 passing through the center of the inner pipe is arranged in the middle, a first inner step 1022 and a second inner step 1023 are arranged on the two inner walls of the cutting groove, and the first inner step 1022 and the second inner step 1023 are semicircular bulges and are used for assisting in locking of a catheter.
As shown in fig. 9 to 11, the front end face 110 of the left end cover 11 is in an incomplete circular shape, a circular through hole 112 is formed in the front end face, a fitting tangential plane 115 overlapped with the right end cover 12 is formed on the right side, the axial direction of the left end cover 11 is a tapered side wall 114 with gradually increased diameter, and a groove 113 matched with a harbor body key slot 1010 is formed in the rear end face 111 matched with the harbor body. The right end cover 12 and the left end cover 11 are of a completely symmetrical structure.
As shown in fig. 12 to 14, the puncture membrane 13 comprises a cylinder 130 and a conical truncated cone 131 with a gradually decreasing diameter, and a convex key 132 matched with a harbor key slot 1010 is arranged on the puncture membrane 13 to limit the circumferential rotation of the puncture membrane. Four evenly distributed circular protrusions 135 are arranged on the puncture surface 134, so that the puncture area of the dialysis port can be assisted to show on the body surface. As shown in fig. 2, the side wall 133 of the conical frustum 131 is attached to the inner walls of the venous lumen 1011 and arterial lumen 1012, leaving a cavity for storing blood at the rear end of the lumen of the venous lumen 1011 and arterial lumen 1012 after the lancing film 13 is placed on the port.
As shown in fig. 15 and 16, the end face 22 of the locking buckle 2 is provided with a positioning boss 23 matched with the port body, the external shape of the locking buckle 2 is that a bell mouth 20 with gradually reduced diameter is connected with an arch-shaped shaft 21, the inside of the locking buckle 2 is provided with a stepped through hole 24, a wedge-shaped inner step 25 is included, the bottom of the locking buckle is horizontal, and the locking buckle can be stably placed on a tissue plane.
As shown in fig. 17, the cross section of the double-lumen intravenous catheter 3 is D-shaped, and the tail end of the catheter adopts an inverted Z-shaped spiral symmetrical tip with a side hole, so that the blood recirculation can be reduced while the dialysis flow rate is ensured.
Specifically, when the dual-cavity intravenous catheter 3 is installed, the dual-cavity intravenous catheter needs to be sleeved into the locking buckle 2 and then sleeved on the connecting inner tube 102 of the harbor body until touching the rear end face of the harbor body, so that the first ladder 1020, the locking ring 1021 and the two inner ladders of the middle cutting groove of the connecting inner tube and the wedge-shaped inner ladder 25 of the locking buckle can fully lock the catheter inside and outside to ensure the tightness of the inside of the harbor body, and the catheter is prevented from slipping and twisting in the body.
Specifically, the port seat 10, the left end cover 11, the right end cover 12 and the locking buckle 2 are made of polytetrafluoroethylene materials with certain hardness and good biocompatibility. The puncture membrane 13 is made of liquid silica gel LSR material with soft texture, puncture resistance and good biocompatibility. The double-cavity intravenous catheter 3 is made of polyurethane material with good compliance and biocompatibility. The materials are selected, and the occurrence probability of thrombus is reduced on the premise of ensuring the safety and the effectiveness of the instrument.
In this embodiment, the double-lumen venous catheter 3 is implanted into the central vein of the human body from the tip, then the whole port body part 1 is embedded into the subcutaneous pocket of the chest wall, the catheter vein end 30 is correspondingly connected with the port body venous cavity 1011, the catheter artery end 31 is connected with the port body arterial cavity 1012 through the locking buckle 2, and finally the epidermis is sutured, thereby completing the implantation operation. Compared with a central venous catheter, the completely implanted dialysis port can well reduce infection, and the beautiful appearance is ensured without obstructing the daily life of a patient. After operation, the dialysis needle is used for respectively puncturing the vein cavity 1011 and the artery cavity 1012 of the thin epidermis and the sub-epidermis port body to form a hemodialysis loop, so that the puncturing pain of a patient can be relieved, and the blood vessel can be effectively protected.
In summary, the invention provides an implantable central venous dialysis port, which utilizes a completely implantable port body to replace a central venous catheter for hemodialysis, can better reduce the infection rate, is convenient to use and does not hinder the daily life of a patient.
Claims (10)
1. An implantable central venous dialysis port, which is characterized by comprising a port body part (1), a locking buckle (2) and a double-cavity venous catheter (3);
the port body part (1) comprises a port seat (10), a left end cover (11), a right end cover (12) and a puncture membrane (13), wherein the puncture membrane (13) is arranged at the front end of the port seat (10), and the left end cover (11) and the right end cover (12) are symmetrically arranged and are in interference fit with the port seat (10) to form a sealed cavity;
the port seat (10) comprises a bottom plate (100), a port body (101) and a connecting inner tube (102), wherein the connecting inner tube (102) is communicated with the double-cavity intravenous catheter (3), and a venous cavity (1011) and an arterial cavity (1012) are arranged in the port body (101);
the double-cavity intravenous catheter (3) comprises a catheter vein end (30) and a catheter artery end (31);
the venous cavity (1011) is correspondingly communicated with the catheter venous end (30) and the arterial cavity (1012) is correspondingly communicated with the catheter arterial end (31) through the locking buckle (2).
2. The implantable central venous dialysis port according to claim 1, wherein the venous lumen (1011) and the arterial lumen (1012) are tapered lumens with gradually decreasing diameters, are symmetrically arranged in the port body (101) and form an angle of 60 ° with the horizontal plane.
3. The implantable central venous dialysis port according to claim 1, wherein the puncture membrane (13) comprises a cylinder (130) and a conical frustum (131) with gradually reduced diameter, four uniformly distributed round protrusions (135) are arranged on a puncture surface (134) of the puncture membrane (13), side walls (133) of the conical frustum (131) are attached to inner walls of a venous cavity (1011) and an arterial cavity (1012), and after the puncture membrane (13) is arranged in the port body (101), blood storage cavities are reserved at the rear ends of the venous cavity (1011) and the arterial cavity (1012).
4. An implantable central venous dialysis port according to claim 1, characterized in that a positioning key groove (1010) is formed in the front end face of the port seat (10), positioning keys (132) are formed in two sides of the puncture membrane (13), grooves (113) are formed in the left end cover (11) and the right end cover (12), the puncture membrane (13) is mounted on the port seat (10) through the cooperation of the positioning key groove (1010) and the positioning keys (132), and the positioning key groove (1010) and the grooves (113) form a sealed port body part (1) cavity in an interference fit mode.
5. The implantable central venous dialysis port according to claim 1, wherein the connecting inner tube (102) is a stepped pipeline, a first step (1020) and a locking ring (1021) are arranged on the outer surface of the connecting inner tube (102), a slot (1025) passing through the center of the inner tube is arranged in the middle of the connecting inner tube (102), and a first inner step (1022) and a second inner step (1023) which are raised are arranged on two inner walls of the slot (1025).
6. The implantable central venous dialysis port according to claim 1, wherein two D-shaped cavities (1024) are provided in the connecting inner tube (102), D-shaped curved holes (1015) are provided in the port body (101), the venous cavities (1011) and the arterial cavities (1012) are communicated with the D-shaped cavities (1024) through the D-shaped curved holes (1015), the D-shaped curved holes (1015) have two corners, the first corner is 120 °, the second corner is 90 °, and the diameter of the D-shaped curved holes (1015) is smaller than or equal to the diameter of the D-shaped cavities (1024).
7. An implantable central venous dialysis port according to claim 1, characterized in that the bottom of the locking buckle (2) is provided with a horizontal platform, the locking buckle (2) comprises a bell mouth (20) with gradually reduced diameter and an arch-shaped shaft (21), a stepped through hole (24) is formed in the arch-shaped shaft (21), a wedge-shaped inner step (25) is formed in the stepped through hole (24), a positioning groove (1016) is formed in the rear end face of the port seat (10), a positioning boss (23) is arranged on the end face (22) of the locking buckle (2), and the port seat (10) is connected with the locking buckle (2) through cooperation between the positioning groove (1016) and the positioning boss (23).
8. The implantable central venous dialysis port according to claim 1, wherein the front end face (110) of the left end cover (11) is in an incomplete circular shape, a circular through hole (112) is formed in the front end face, a matching tangent plane (115) overlapped with the right end cover (12) is formed on the right side, the axial direction of the end cover of the left end cover (11) is a conical side wall (114) with gradually increased diameter, and the right end cover (12) and the left end cover (11) are in a completely symmetrical structure.
9. An implantable central venous dialysis port according to claim 1, characterized in that the included angle of two oblique sides (1000) of the bottom plate (100) is 120 °, five symmetrically distributed incomplete circular suturing platforms (1001) are arranged on the bottom plate (100), and concentric suturing holes (1002) are arranged on each suturing platform (1001).
10. An implantable central venous dialysis port according to claim 1, characterized in that the port seat (10), the left end cover (11), the right end cover (12) and the locking buckle (2) are made of polytetrafluoroethylene materials, the puncture membrane (13) is made of liquid silicone LSR materials, the double-vena cava catheter (3) is made of polyurethane materials, and the tail end of the double-vena cava catheter (3) is provided with an inverted Z-shaped spiral symmetrical tip with a side hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211523486.8A CN116059471A (en) | 2022-11-30 | 2022-11-30 | Implanted central venous dialysis port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211523486.8A CN116059471A (en) | 2022-11-30 | 2022-11-30 | Implanted central venous dialysis port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116059471A true CN116059471A (en) | 2023-05-05 |
Family
ID=86179379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211523486.8A Withdrawn CN116059471A (en) | 2022-11-30 | 2022-11-30 | Implanted central venous dialysis port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116059471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118217480A (en) * | 2024-05-22 | 2024-06-21 | 南方医科大学珠江医院 | B ultrasonic guiding combined intra-cavity 3CG positioning arm type transfusion port |
-
2022
- 2022-11-30 CN CN202211523486.8A patent/CN116059471A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118217480A (en) * | 2024-05-22 | 2024-06-21 | 南方医科大学珠江医院 | B ultrasonic guiding combined intra-cavity 3CG positioning arm type transfusion port |
| CN118217480B (en) * | 2024-05-22 | 2024-07-16 | 南方医科大学珠江医院 | B ultrasonic guiding combined intra-cavity 3CG positioning arm type transfusion port |
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