CN113730694B - A peritoneal dialysis tube - Google Patents

Abstract

The invention provides a peritoneal dialysis tube, and belongs to the technical field of medical appliances. The peritoneal dialysis tube includes a peritoneal dialysis tube structure and a fixation structure. The peritoneal dialysis tube structure comprises an outer end tube, an abdominal end tube and a terylene sleeve, wherein the subcutaneous tunnel tube is fixed on one side of the outer end tube, the abdominal end tube is fixed on one side of the subcutaneous tunnel tube, the terylene sleeve is fixed on the outer surface of the subcutaneous tunnel tube, a drainage channel is formed in the inner wall of the abdominal end tube, the inner side hole of the tube is located on one side of the outer side hole of the tube, the fixing structure comprises a supporting piece and an extrusion piece, the supporting piece is fixed on one end of the terylene sleeve, and the extrusion piece is fixed on the supporting piece. The invention adopts an elliptic tube body design to reduce the incidence rate of lateral displacement of the tube body, and the side hole of the tube wall adopts a design of low outlet and high inlet to realize the side drainage tube effect of the side hole, thereby reducing the drainage obstruction risk caused by blockage.

Description

A peritoneal dialysis tube

Technical Field

The present invention relates to the technical field of medical devices, and in particular to a peritoneal dialysis tube.

Background technique

Peritoneal dialysis tubes are important tubes for peritoneal dialysis patients. The peritoneal dialysis fluid is sent into the abdominal cavity through the peritoneal dialysis tube. Currently, most of the peritoneal dialysis tubes implanted in the abdominal cavity are made of soft materials. Tenck-hoff straight tubes are currently used in my country. When implanted, the tail end of the peritoneal dialysis tube needs to be placed in the lowest part of the true pelvis (recto-vesical/uterine pouch). Currently, implantation is divided into two surgical methods: open and laparoscopic. Regardless of the curled tube or the straight tube, their tube bodies are designed in a cylindrical shape. This design results in the same deformation force required for the tube body to bend in any direction. However, when the tube body is implanted in the abdominal cavity, the abdominal wall in front and the intestinal tube in the back can fix the tube body front and back, and there is no tissue on both sides to fix the tube body. The tube body can be squeezed by the tissue and move freely to the left and right. When the free range is too large, the tube body is soft and the lateral deformation rebound tension is insufficient, and it is not easy to reset. This will cause the peritoneal dialysis tube to shift and the peritoneal dialysis fluid to enter and exit unsmoothly. The peritoneal dialysis tube that cannot be reset in time will increase the chance of the greater omentum wrapping the tail end of the drainage tube because the tail end of the tube body moves upward at this time. The straight-tube transparent tube design of the side hole makes it easier for the blood to enter the main lumen when the greater omentum invades the side hole, thus causing tube blockage. When the blockage height occurs at the highest position of the side hole, the lumen will not be fully drained or even unable to drain.

Summary of the invention

In order to make up for the above shortcomings, the present invention provides a peritoneal dialysis tube, which aims to improve the peritoneal dialysis tube, the lateral drift tube displacement, the cavity blocking tube position at the high side hole, which will cause serious fluid inlet and outlet obstruction, and the side hole adopts a straight tube type, and the greater omentum is easy to grow in the main tube through the side hole.

The present invention is achieved in that:

The invention provides a peritoneal dialysis tube, comprising a peritoneal dialysis tube structure and a fixing structure.

The peritoneal dialysis tube structure includes an extracorporeal end tube, a subcutaneous tunnel tube, an abdominal end tube and a polyester sleeve, wherein the subcutaneous tunnel tube is fixed on one side of the extracorporeal end tube, the abdominal end tube is fixed on one side of the subcutaneous tunnel tube, the polyester sleeve is fixed on the outer surface of the subcutaneous tunnel tube, a drainage channel is provided in the inner wall of the abdominal end tube, a tube outer hole is provided on the outer surface of the drainage channel, a tube inner hole is provided on the inner surface of the drainage channel, and the tube inner hole is located on one side of the tube outer hole, the fixing structure includes a support and an extrusion member, the support member is fixed on one end of the polyester sleeve, the extrusion member is fixed on the support member, the tube outer hole and the tube inner hole are designed with low exit and high entry, and the tube inner hole is closer to the fixing structure than the tube outer hole in the axial direction of the peritoneal dialysis tube.

In one embodiment of the present invention, an internally threaded tube is fixed to the other end of the external end tube, and the internal threads of the internally threaded tube are connected to a connecting tube.

In one embodiment of the present invention, an end cap is threadedly connected to the end of the connecting pipe.

In one embodiment of the present invention, the cross-section of the abdominal cavity end tube is elliptical, and the outer tube holes and the inner tube holes are circumferentially distributed on the abdominal cavity end tube.

In one embodiment of the present invention, the surfaces of the subcutaneous tunnel tube and the abdominal end tube are provided with developing lines.

In one embodiment of the present invention, the support member includes a fixing frame and a clamping plate, wherein the clamping plate is symmetrically fixed at the upper and lower ends of the fixing frame, the clamping plate is clamped on the surface of the subcutaneous tunnel tube, and a groove is formed on the top surface of the fixing frame.

In one embodiment of the present invention, the extrusion member includes a fixed block and a threaded column, the fixed block is fixed to the top surface of the fixed frame, a sliding groove is opened inside the fixed block, the threaded column rotates through the sliding groove, a slider is threadedly connected to the surface of the threaded column, the slider is slidably connected to the inner surface of the sliding groove, the slider passes through the groove, and an extrusion portion is fixed to the end of the slider.

In one embodiment of the present invention, the cross section of the slider is square, and the slider and the slide groove are matched.

In an embodiment of the present invention, a rotating portion is fixed to the other end of the threaded column, and the rotating portion is located on the top surface of the fixed block.

In an embodiment of the present invention, the extrusion portion includes an extrusion plate and pressing teeth, the extrusion plate is fixedly connected to the end of the slider, and the pressing teeth are fixed at an equal distance at the bottom of the extrusion plate.

The beneficial effects of the present invention are as follows: the peritoneal dialysis tube obtained by the present invention through the above-mentioned design, during the process of liquid injection, the liquid flows into the patient's abdominal cavity through the abdominal cavity end tube, and can also flow into the abdominal cavity through the drainage channel, the outer hole of the tube and the inner hole of the tube. Since the abdominal cavity end tube adopts an elliptical tube body design, the tension of the abdominal cavity end tube to deform and shift laterally is increased, and the possibility of lateral displacement is reduced. The outer hole of the tube and the inner hole of the tube adopt a low-out and high-in design, which can prevent the omentum from invading the main cavity, and also has the ability of secondary drainage. When the main cavity of the abdominal cavity end tube is blocked, it still has a certain drainage ability, thereby buying time for drug treatment and extending the service life of the peritoneal dialysis tube.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a peritoneal dialysis tube from a first viewing angle provided by an embodiment of the present invention;

FIG2 is a schematic diagram of a partial cross-sectional exploded structure of a peritoneal dialysis tube provided by an embodiment of the present invention from a first viewing angle;

FIG3 is an enlarged view of point A in FIG2 of the present invention;

FIG4 is an enlarged view of point B in FIG2 of the present invention;

FIG5 is an enlarged view of point C in FIG2 of the present invention;

FIG6 is a schematic diagram of the cross-sectional structure of the peritoneal cavity end of a peritoneal dialysis tube provided in an embodiment of the present invention;

FIG7 is a schematic cross-sectional structure diagram of a peritoneal dialysis tube support provided in an embodiment of the present invention;

FIG8 is a schematic diagram of the cross-sectional structure of a peritoneal dialysis tube extrusion member provided in an embodiment of the present invention.

In the figure: 100-peritoneal dialysis tube structure; 110-extracorporeal end tube; 111-inner threaded tube; 120-subcutaneous tunnel tube; 130-abdominal end tube; 131-drainage channel; 132-outer hole of tube; 133-inner hole of tube; 140-connecting tube; 150-end cap; 160-polyester sleeve; 170-developing line; 200-fixing structure; 230-support member; 231-fixing frame; 232-card plate; 233-groove; 240-extrusion member; 241-fixing block; 242-slide; 243-threaded column; 2431-rotating part; 244-sliding block; 245-extrusion part; 2451-extrusion plate; 2452-pressing tooth.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

Example

Please refer to FIGS. 1-8 . The present invention provides a technical solution: a peritoneal dialysis tube, comprising a peritoneal dialysis tube structure 100 and a fixing structure 200 .

The fixing structure 200 is installed and fixed on the peritoneal dialysis tube structure 100 to fix and retain the peritoneal dialysis tube.

Please refer to Figures 1 to 6. The peritoneal dialysis tube structure 100 includes an extracorporeal end tube 110, a subcutaneous tunnel tube 120, an abdominal end tube 130 and a polyester sleeve 160. The subcutaneous tunnel tube 120 is fixed to one side of the extracorporeal end tube 110, the abdominal end tube 130 is fixed to one side of the subcutaneous tunnel tube 120, the polyester sleeve 160 is fixed to the outer surface of the subcutaneous tunnel tube 120, a drainage channel 131 is opened in the inner wall of the abdominal end tube 130, a tube outer hole 132 is opened on the outer surface of the drainage channel 131, and a tube inner hole 133 is opened on the inner surface of the drainage channel 131, and the tube inner hole 133 is located on one side of the tube outer hole 132.

The other end of the extracorporeal end tube 110 is fixed with an internal threaded tube 111, and the internal thread of the internal threaded tube 111 is connected with a connecting tube 140, where the connecting tube 140 can be conveniently connected to the external peritoneal dialysis tube and the fluid exchange tube; the end of the connecting tube 140 is threadedly connected with an end cap 150, where the end cap 150 can conveniently seal the cavity; the cross-section of the abdominal end tube 130 is elliptical, and the outer hole 132 of the tube and the inner hole 133 of the tube are circumferentially distributed on the abdominal end tube 130. The long axis of the elliptical abdominal end tube 130 is parallel to the plane of the intestinal wall and the abdominal wall, and the short sleeve is perpendicular to it. At the same time, the inner hole 133 and the outer hole 132 of the tube adopt a low-out and high-in design, which can play the role of a secondary drainage tube and also avoid the omentum invading the main body to cause drainage obstruction; the surfaces of the subcutaneous tunnel tube 120 and the abdominal end tube 130 are provided with a developing line 170.

Please refer to FIGS. 1 to 8 , the fixing structure 200 includes a supporting member 230 and an extruding member 240 . The supporting member 230 is fixed to the other end of the polyester sleeve 160 , and the extruding member 240 is fixed to the supporting member 230 .

The outer tube hole 132 and the inner tube hole 133 are designed to be low-out and high-in, and the inner tube hole 132 is closer to the fixing structure 200 than the outer tube hole 133 in the axial direction of the peritoneal dialysis tube.

The support member 230 includes a fixing frame 231 and a clamping plate 232, and the clamping plate 232 is symmetrically fixed on the upper and lower ends of the fixing frame 231. The clamping plate 232 is clamped on the surface of the subcutaneous tunnel tube 120, and a groove 233 is provided on the top surface of the fixing frame 231; the extrusion member 240 includes a fixing block 241 and a threaded column 243. The fixing block 241 is fixed on the top surface of the fixing frame 231, and a slide groove 242 is provided inside the fixing block 241. The threaded column 243 rotates and passes through the slide groove 242. Here, the surface of the threaded column 243 is interference-connected with a bearing, and the bearing is embedded in the inside of the slide groove 242. Through such an arrangement, the threaded column 243 can be easily fixed and the thread can be rotated at the same time. The surface of the threaded column 243 is threadedly connected with a slider 244, and the slider 244 is slidably connected to the inner surface of the slide groove 242. The slider 244 passes through the groove 233, and the end of the slider 244 is fixed with an extrusion portion 245.

The cross section of the slider 244 is square, and the slider 244 and the slide groove 242 are matched. The setting of the slider 244 with a square cross section can prevent the slider 244 and the threaded column 243 from being driven, thereby affecting the use; the other end of the threaded column 243 is fixed with a rotating part 2431, and the rotating part 2431 is located on the top surface of the fixed block 241. Here, the rotating part 2431 is a cylindrical block. Through the setting of the rotating part 2431, the threaded column 243 can be easily rotated; the extrusion part 245 includes an extrusion plate 2451 and a pressing tooth 2452. The extrusion plate 2451 is fixedly connected to the end of the slider 244, and the pressing tooth 2452 is fixed at an equal distance at the bottom of the extrusion plate 2451. Here, the pressing tooth 2452 is conically set. Through the setting of the pressing tooth 2452, the contact area with the subcutaneous tunnel tube 120 can be reduced, which is beneficial to intercepting the subcutaneous tunnel tube 120.

Specifically, the working principle of the peritoneal dialysis tube is as follows: when in use, the peritoneal end tube 130 is inserted into the patient's peritoneal cavity, and then the extracorporeal end tube 110 is connected to the external liquid bag tube through the connecting tube 140. At this time, the threaded column 243 is driven to rotate by the rotating part 2431, so that the slider 244 drives the extrusion plate 2451 and the pressing tooth 2452 to move toward the inside of the slide groove 242. At this time, the subcutaneous tunnel tube 120 is connected with the extracorporeal end tube 110 and the peritoneal end tube 130. During the injection process, the liquid flows into the patient's peritoneal cavity through the peritoneal end tube 130, and can also The fluid flows into the abdominal cavity through the drainage channel 131, the outer hole 132 and the inner hole 133. Since the abdominal end tube 130 adopts an elliptical tube design, the tension of the abdominal end tube 130 to deform and shift laterally is increased, and the possibility of lateral displacement is reduced. The outer hole 132 and the inner hole 133 of the tube adopt a low-out and high-in design, which can prevent the omentum from invading the main cavity. At the same time, it also has the ability of secondary drainage. When the main cavity of the abdominal end tube 130 is blocked, it still has a certain drainage ability, thereby buying time for drug treatment and extending the service life of the peritoneal dialysis tube.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A peritoneal dialysis tube, characterized in that it comprises A peritoneal dialysis tube structure (100), the peritoneal dialysis tube structure (100) comprising an extracorporeal end tube (110), a subcutaneous tunnel tube (120), an abdominal end tube (130) and a polyester sleeve (160), the subcutaneous tunnel tube (120) being fixed to one side of the extracorporeal end tube (110), the abdominal end tube (130) being fixed to one side of the subcutaneous tunnel tube (120), the polyester sleeve (160) being fixed to the outer surface of the subcutaneous tunnel tube (120), a drainage channel (131) being provided in the inner wall of the abdominal end tube (130), a tube outer hole (132) being provided on the outer surface of the drainage channel (131), a tube inner hole (133) being provided on the inner surface of the drainage channel (131), the tube inner hole (133) being located on one side of the tube outer hole (132), and the tube outer hole (132) and the tube inner hole (133) being designed to be low-out and high-in; A fixing structure (200), the fixing structure (200) comprising a support member (230) and an extrusion member (240), the support member (230) being fixed to one end of the polyester sleeve (160), the extrusion member (240) being fixed to the support member (230), the inner tube hole (133) being closer to the fixing structure (200) than the outer tube hole (132) in the axial direction of the peritoneal dialysis tube. 2. A peritoneal dialysis tube according to claim 1, characterized in that an internally threaded tube (111) is fixed to the other end of the extracorporeal end tube (110), and the internal threads of the internally threaded tube (111) are connected to a connecting tube (140). 3. A peritoneal dialysis tube according to claim 2, characterized in that an end cap (150) is threadedly connected to the end of the connecting tube (140). 4. A peritoneal dialysis tube according to claim 1, characterized in that the cross-section of the peritoneal end tube (130) is elliptical, and the outer tube hole (132) and the inner tube hole (133) are circumferentially distributed on the peritoneal end tube (130). 5. A peritoneal dialysis tube according to claim 1, characterized in that the surfaces of the subcutaneous tunnel tube (120) and the peritoneal end tube (130) are provided with developing lines (170). 6. A peritoneal dialysis tube according to claim 1, characterized in that the support member (230) comprises a fixing frame (231) and a clamping plate (232), the clamping plate (232) is symmetrically fixed at the upper end and the lower end of the fixing frame (231), the clamping plate (232) is clamped on the surface of the subcutaneous tunnel tube (120), and a groove (233) is provided on the top surface of the fixing frame (231). 7. A peritoneal dialysis tube according to claim 6, characterized in that the extrusion piece (240) comprises a fixing block (241) and a threaded column (243), the fixing block (241) is fixed to the top surface of the fixing frame (231), a slide groove (242) is provided inside the fixing block (241), the threaded column (243) rotates through the slide groove (242), a slider (244) is threadedly connected to the surface of the threaded column (243), the slider (244) is slidably connected to the inner surface of the slide groove (242), the slider (244) passes through the groove (233), and an extrusion portion (245) is fixed to the end of the slider (244). 8. A peritoneal dialysis tube according to claim 7, characterized in that the cross section of the slider (244) is square, and the slider (244) and the slide groove (242) are matched. 9. A peritoneal dialysis tube according to claim 7, characterized in that a rotating portion (2431) is fixed to the other end of the threaded column (243), and the rotating portion (2431) is located on the top surface of the fixing block (241). 10. A peritoneal dialysis tube according to claim 7, characterized in that the squeezing portion (245) comprises a squeezing plate (2451) and pressing teeth (2452), the squeezing plate (2451) is fixedly connected to the end of the slider (244), and the pressing teeth (2452) are fixed at an equal distance at the bottom of the squeezing plate (2451).