CN219579543U

CN219579543U - Bending-preventing and blocking-pressing mechanism for hemodialysis catheter

Info

Publication number: CN219579543U
Application number: CN202222406114.9U
Authority: CN
Inventors: 王烨; 朱俊龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-11
Filing date: 2022-09-11
Publication date: 2023-08-25
Anticipated expiration: 2032-09-11

Abstract

The utility model relates to an anti-bending and blocking-pressing mechanism of a hemodialysis catheter, which comprises an upper half protection cylinder, a lower half protection cylinder, a rubber half ring and a transition protection rod; the upper half protection cylinder is connected with the lower half protection cylinder through a thin hinge, a buckle is arranged at one end of the upper half protection cylinder far away from the thin hinge, and a convex seat is arranged at one end of the lower half protection cylinder far away from the thin hinge; the rubber semi-rings are positioned in the inner walls of the upper half protection cylinder and the lower half protection cylinder; the end surfaces of the upper half protection cylinder and the lower half protection cylinder are provided with dovetail holes; the transition guard bar comprises a bar body and a dovetail structure, wherein the dovetail structure is positioned at two ends of the bar body, and the dovetail structure is matched with the shape of the dovetail hole. The utility model can be directly sleeved outside a blood transfusion tube of the existing hemodialysis instrument, can form surrounding protection and support for the blood transfusion tube, bear the pressure of the body, clothes, bedding and the like of a patient, avoid the pressure acting on the blood transfusion tube and avoid the blockage of the blood transfusion tube by external force.

Description

Bending-preventing and blocking-pressing mechanism for hemodialysis catheter

Technical Field

The utility model relates to the relevant field of hemodialysis instruments, in particular to an anti-bending and blocking-pressing mechanism of a hemodialysis catheter.

Background

Hemodialysis is to drain blood in a body to the outside of the body, and to pass through a dialyzer consisting of innumerable hollow fibers, wherein the blood and dialysate with similar concentration of a body are in and out of the hollow fibers, and substance exchange is carried out by the dispersion, ultrafiltration, adsorption and convection principles, so that metabolic wastes in the body are removed, and the balance of electrolyte and acid and alkali is maintained; at the same time, the whole process of removing excessive water from the body and reinfusion of the purified blood is called hemodialysis.

The blood in the patient is drained to the pipeline of the hemodialysis machine to form a blood conveying pipe for conveying and draining the blood. The smoothness directly determines the continuity and reliability of hemodialysis.

When a patient is hemodialysis, the patient may be aged or weakened and inconvenient to move, so that the patient is mostly lying on a sickbed or sitting on a special sofa to perform hemodialysis. The blood transfusion tube is used as a pipeline for connecting the patient and the hemodialysis machine, and can be blocked by the body, clothes, bedding and the like of the patient.

The existing anti-blocking technology of blood transfusion tubes is how to avoid blood clots or thrombus from blocking blood transfusion tubes; the patent numbers are as follows: 202121445057.4, publication number: CN215915899U, a chinese patent of utility model named an improved hemodialysis catheter.

The body, clothing, bedding, etc. of the patient are subjected to a large external force to the blood transfusion tube, and therefore, the blood transfusion tube is far more obstructive than the blood clot or thrombus inside, and therefore, a special mechanism dedicated to the prevention of the blood transfusion tube from being pressed by the body, clothing, bedding, etc. of the patient is required to be designed.

Disclosure of Invention

The purpose of the utility model is that:

the bending-preventing and blocking-pressing mechanism for the hemodialysis catheter can be directly sleeved outside a blood transfusion tube of an existing hemodialysis instrument, can form surrounding protection and support for the blood transfusion tube, bear the body, clothes, bedding and the like of a patient, and avoid the pressure acting on the blood transfusion tube and the blockage of the blood transfusion tube caused by external force.

In order to achieve the above object, the present utility model provides the following technical solutions:

a bending-preventing blocking-pressing mechanism of a hemodialysis catheter comprises an upper half protection cylinder, a lower half protection cylinder, a rubber half ring and a transition protection rod; the upper half protection cylinder is connected with the lower half protection cylinder through a thin hinge, a buckle is arranged at one end of the upper half protection cylinder far away from the thin hinge, and a convex seat is arranged at one end of the lower half protection cylinder far away from the thin hinge; the rubber semi-rings are positioned in the inner walls of the upper half protection cylinder and the lower half protection cylinder; the end surfaces of the upper half protection cylinder and the lower half protection cylinder are provided with dovetail holes; the transition guard bar comprises a bar body and a dovetail structure, wherein the dovetail structure is positioned at two ends of the bar body, and the dovetail structure is matched with the shape of the dovetail hole.

Further, the upper half protection cylinder and the lower half protection cylinder are of semi-cylindrical structures, and the closed upper half protection cylinder and the lower half protection cylinder form a complete cylindrical structure.

Further, the positions of the buckles correspond to the positions of the convex seats, and the convex seats can be embedded into the through grooves of the buckles to form locking.

Further, the rubber semi-ring structure is semi-ring; two corresponding rubber semi-rings on the inner walls of the upper half protection cylinder and the lower half protection cylinder form a complete annular structure in the closed state of the upper half protection cylinder and the lower half protection cylinder; the rubber semi-ring is made of rubber.

Furthermore, the rod body of the transition guard rod is in a round rod shape, the cross section of the dovetail structure is in an isosceles trapezoid shape, and the dovetail structure can be embedded into the dovetail hole to realize the plug-in connection of the transition guard rod and the upper guard half cylinder or the lower guard half cylinder.

Further, the dovetail holes are arranged at equal angles along the end face of the upper half protection cylinder or the lower half protection cylinder; the transition guard bar is made of rubber.

The beneficial effects of the utility model are as follows: the utility model provides a hemodialysis pipe prevents buckling and presses stifled mechanism, through the cooperation use of last half section of thick bamboo, lower half section of thick bamboo, thin hinge, buckle, rubber semi ring and transition protection pole, go up half section of thick bamboo and lower half section of thick bamboo and can directly overlap the blood transfusion tube outside of current hemodialysis appearance, through the buckle lock, go up half section of thick bamboo, lower half section of thick bamboo and rubber semi ring and can form encircling protection, support and location to the blood transfusion tube, thereby bear patient's body, clothing and bedding etc. and avoid the pressure to act on the blood transfusion tube, and then avoid the blood transfusion tube to receive external force to block, thereby ensure smooth going on of hemodialysis; the mechanism has low cost and convenient use, and is favorable for large-scale popularization and application.

Drawings

Fig. 1 is a schematic diagram of a single structure of a bending-prevention blocking-pressing mechanism of a hemodialysis catheter.

Fig. 2 is a schematic diagram of a combined structure of a bending and blocking prevention mechanism for hemodialysis catheters.

Fig. 3 is a schematic view of a partial structure of an end of a transitional guard bar of an anti-bending and blocking mechanism of a hemodialysis catheter.

The parts in the figure are marked:

1. an upper half protection cylinder; 2. a lower half protection cylinder; 3. a thin hinge; 4. a buckle; 5. a boss; 6. a rubber half ring; 7. yan Weikong; 8. a transitional guard bar; 81. a rod body; 82. dovetail structure.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, a hemodialysis catheter bending-preventing blocking-pressing mechanism comprises an upper half protection cylinder 1, a lower half protection cylinder 2, a rubber half ring 6 and a transition protection rod 8; the upper half protection tube 1 is connected with the lower half protection tube 2 through a thin hinge 3, the upper half protection tube 2 can be turned over and opened or closed relative to the lower half protection tube 2, the upper half protection tube 1 and the lower half protection tube 2 are both used for wrapping and protecting blood transfusion tubes, a buckle 4 is arranged at one end, far away from the thin hinge 3, of the upper half protection tube 1, a boss 5 is arranged at one end, far away from the thin hinge 3, of the lower half protection tube 2, and the buckle 4 is matched with the boss 5 to realize locking; the rubber semi-rings 6 are positioned in the inner walls of the upper half protection cylinder 1 and the lower half protection cylinder 2, and the rubber semi-rings 6 are contacted with the outer wall of the blood conveying tube and are used for positioning; the end surfaces of the upper half protection cylinder 1 and the lower half protection cylinder 2 are provided with dovetail holes 7; the transition guard bar 8 comprises a bar body 81 and a dovetail structure 82, wherein the dovetail structure 82 is positioned at two ends of the bar body 81, the dovetail structure 82 is matched with the dovetail hole 7 in shape, namely, the dovetail structure 82 can be inserted into the dovetail hole 7, so that the transition guard bar 8 is inserted.

The upper half protection cylinder 1 and the lower half protection cylinder 2 are of semi-cylindrical structures, the closed upper half protection cylinder 1 and the lower half protection cylinder 2 form a complete cylindrical structure, and the complete cylindrical structure is wrapped on the periphery of a blood transfusion tube, so that the whole peripheral protection of the blood transfusion tube is realized.

The buckle 4 corresponds to the position of the boss 5, the boss 5 can be embedded into the through groove of the buckle 4 to form locking, and the upper protection half cylinder 1 and the lower protection half cylinder 2 are prevented from being opened by themselves after locking.

The rubber semi-ring 6 is semi-ring shaped; two corresponding rubber semi-rings 6 on the inner walls of the upper half protection cylinder 1 and the lower half protection cylinder 2 form a complete annular structure in the closed state of the upper half protection cylinder 1 and the lower half protection cylinder 2, and the annular structure surrounds the outer wall of the blood transfusion tube; the rubber semi-ring 6 is made of rubber, soft in texture and high in friction coefficient.

The rod body 81 of the transition guard rod 8 is in a round rod shape, the cross section of the dovetail structure 82 is in an isosceles trapezoid shape, the dovetail structure 82 can be embedded into the dovetail hole 7 to realize the insertion of the transition guard rod 8 and the upper guard half cylinder 1 or the lower guard half cylinder 2, and the transition guard rod 8 is used for connecting the adjacent upper guard half cylinder 1 or lower guard half cylinder 2 to realize multisection extension.

The dovetail holes 7 are arranged at equal angles along the end face of the upper half protection cylinder 1 or the lower half protection cylinder 2, so that the transition protection rods 8 can be uniformly distributed on the periphery of a blood transfusion tube; the transition guard bars 8 are made of rubber, and a plurality of transition guard bars 8 can form annular protection for blood transfusion tubes; the transition guard bar 8 made of rubber can be bent and deformed to a certain extent, so that the trend of the blood transfusion tube is adapted.

The specific use method of the utility model is as follows:

the needle heads of the blood transfusion tube ends of the hemodialysis instrument are respectively penetrated into veins and arteries of the arm or other parts of a patient, blood of the patient enters the blood transfusion tube from the arteries through the needle heads, enters the hemodialysis instrument for purification, and then flows back to the veins of the patient through another blood transfusion tube;

after the needle is needled, the buckle 4 of the bending-preventing blocking-pressing mechanism is opened, the upper half protection cylinder 1 is turned over and opened relative to the lower half protection cylinder 2, and then the lower half protection cylinder 2 is placed on a blood transfusion tube, so that the blood transfusion tube is embedded into the lower half protection cylinder 2 and is contacted with the rubber semi-ring 6;

then the upper protection half cylinder 1 is turned over to realize buckling, and the buckle 4 is buckled on the convex seat 5 to realize locking; then the connection of adjacent protective structures on the blood conveying pipe is realized through the transition protective rod 8; specifically, a dovetail structure 82 at one end of a rod body 81 of the transition guard rod 8 is inserted into a dovetail hole 7 of an upper guard half cylinder 1 or a lower guard half cylinder, and the other end of the dovetail structure is inserted into a dovetail hole 7 of another upper guard half cylinder 1 or a lower guard half cylinder, so that connection is realized, and external wrapping type supporting protection of a blood transfusion tube is realized, so that the blood transfusion tube is prevented from being blocked by external pressure.

The above examples are provided to further illustrate the utility model and do not limit the utility model to these specific embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be construed as being within the protection scope of the present utility model.

Claims

1. Hemodialysis pipe prevents buckling and presses stifled mechanism, its characterized in that: comprises an upper half protection cylinder (1), a lower half protection cylinder (2), a rubber half ring (6) and a transition protection rod (8); the upper half protection cylinder (1) is connected with the lower half protection cylinder (2) through a thin hinge (3), a buckle (4) is arranged at one end of the upper half protection cylinder (1) far away from the thin hinge (3), and a convex seat (5) is arranged at one end of the lower half protection cylinder (2) far away from the thin hinge (3); the rubber semi-rings (6) are positioned in the inner walls of the upper half protection cylinder (1) and the lower half protection cylinder (2); the end surfaces of the upper half protection cylinder (1) and the lower half protection cylinder (2) are provided with dovetail holes (7); the transition guard bar (8) comprises a bar body (81) and a dovetail structure (82), wherein the dovetail structure (82) is positioned at two ends of the bar body (81), and the dovetail structure (82) is matched with the shape of the dovetail hole (7).

2. The hemodialysis catheter buckling prevention and blockage prevention mechanism according to claim 1, wherein: the upper half protection cylinder (1) and the lower half protection cylinder (2) are of semi-cylindrical structures, and the closed upper half protection cylinder (1) and the lower half protection cylinder (2) form a complete cylindrical structure.

3. The hemodialysis catheter buckling prevention and blockage prevention mechanism according to claim 2, wherein: the buckle (4) corresponds to the convex seat (5), and the convex seat (5) can be embedded into the through groove of the buckle (4) to form locking.

4. The hemodialysis catheter buckling prevention and blockage prevention mechanism according to claim 3, wherein: the structure of the rubber semi-ring (6) is semi-ring; two corresponding rubber semi-rings (6) on the inner walls of the upper half protection cylinder (1) and the lower half protection cylinder (2) form a complete annular structure in the closed state of the upper half protection cylinder (1) and the lower half protection cylinder (2); the rubber semi-ring (6) is made of rubber.

5. The hemodialysis catheter buckling prevention and blockage prevention mechanism according to claim 4, wherein: the rod body (81) of the transition protection rod (8) is in a round rod shape, the cross section of the dovetail structure (82) is in an isosceles trapezoid shape, and the dovetail structure (82) can be embedded into the Yan Weikong (7) to realize the plug-in connection of the transition protection rod (8) and the upper protection half cylinder (1) or the lower protection half cylinder (2).

6. The hemodialysis catheter buckling prevention and blockage prevention mechanism according to claim 5, wherein: the dovetail holes (7) are arranged at equal angles along the end face of the upper half protection cylinder (1) or the lower half protection cylinder (2); the transition guard bar (8) is made of rubber.