Hemodialysis central venous catheter fixator

Abstract

The utility model discloses a hemodialysis central venous catheter fixator which comprises a fixator assembly used for wrapping and fixing an in-vitro section of a central venous catheter. The fixator assembly comprises a fixing part abutting against the skin of a patient, a hinge shaft arranged on one side of the fixing part, an overturning part movably connected with the fixing part through the hinge shaft, and at least two catheter locking ends fixedly arranged on the inner side of the fixing part and used for fixing part of the central venous catheter. The cap connecting ends extend outwards along the axial ends of the fixing part and the overturning part respectively, the cap is connected to the cap connecting ends in a sleeving mode, the closed fixator assembly can effectively isolate a central venous catheter from making contact with the outside, the infection risk is avoided, operation is easy and convenient, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a central venous catheter fixer for hemodialysis. Background Art

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains blood from the body to the outside of the body through a dialyzer composed of countless hollow fibers. The blood and the electrolyte solution (dialysate) containing similar concentrations to the body are exchanged through diffusion / convection inside and outside the hollow fibers to remove metabolic wastes, maintain electrolyte and acid-base balance, remove excess water from the body, and return the purified blood. The whole process is called hemodialysis.

[0003] During hemodialysis, the blood in the patient's blood vessels is drained out of the body. First, a vascular access needs to be established. A deep venous catheter is one type of vascular access. Its main operation is to insert a deep venous catheter into a deep vein (such as the internal jugular vein, femoral vein, etc.) and leave it there for a long time. At the same time, part of the catheter itself will be left outside the patient's body, which is also called the extracorporeal segment of the catheter.

[0004] At present, the treatment method for the external segment of deep venous catheter is usually to wrap it with gauze and then fix it with medical tape. The operation process is complicated and time-consuming, which increases the chance of catheter infection and affects efficiency. At the same time, the gauze wrapping method also has the chance of infection of the external segment of the catheter due to its poor sealing performance and poor waterproof effect, which causes great inconvenience to the patient's daily life and has low practicality. Utility Model Content

[0005] The embodiment of the utility model provides a central venous catheter fixator for hemodialysis, comprising a fixator assembly for wrapping and fixing an extracorporeal segment of a central venous catheter, the fixator assembly comprising a fixing portion against the patient's skin, a hinge shaft arranged at one side of the fixing portion, a flip portion movably connected to the fixing portion through the hinge shaft, at least two catheter locking ends fixedly arranged inside the fixing portion for fixing a portion of the central venous catheter, cap connection ends extending outwardly along the axial ends of the fixing portion and the flip portion, respectively, and a cap sleeved on the cap connection end;

[0006] Wherein, an accommodating space for accommodating part of the central venous catheter is formed by enclosing the fixing portion, the flipping portion and the cap.

[0007] As described above, the fixed portion can limit and fix the central venous catheter through the catheter locking end provided inside the fixed portion, and then the hinge shaft drives the flipping portion to flip and close toward the fixed portion to wrap the central venous catheter. Then, the cap is connected to the cap connecting end to complete the rapid assembly of the fixer assembly, and the fixer assembly can effectively isolate the central venous catheter from the outside world to avoid the risk of infection. The operation is simple, convenient and practical, which solves the current treatment method for the extracorporeal segment of the deep venous catheter, which is usually wrapped with gauze and then fixed with medical tape. The operation process is complicated and time-consuming, thereby increasing the probability of catheter infection and affecting efficiency. At the same time, the gauze bandage method has poor sealing and low practicality.

[0008] In addition, the hemodialysis central venous catheter fixator proposed in the embodiment of the utility model may also have the following additional technical features:

[0009] Furthermore, the central venous catheter includes a cannula for inserting into the patient's body, a three-way seat arranged on the side of the cannula away from the patient, at least two shunt branches connected to the side of the three-way seat away from the cannula, and a flow limiting buckle sleeved outside the shunt branches.

[0010] Furthermore, the portion of the cannula close to one side of the three-way seat, as well as the three-way seat, the shunt branch and the flow limiting buckle together constitute the extracorporeal section of the central venous catheter.

[0011] Furthermore, the fixing portion and the flip portion extend outwardly away from one side of the cap to form a catheter locking end, and the catheter locking end is sleeved on the outer periphery of the insertion tube.

[0012] Furthermore, a rubber ring is extended from the inner side of the locking end of the catheter toward the center and abuts against the outer edge of the cannula.

[0013] Furthermore, a stabilizing groove is embedded at the position where the fixing portion contacts the patient's skin.

[0014] Furthermore, a slot end is extended from the inner side of the fixing portion toward the center of the circle, and a lock end adapted to the slot end is extended from the inner side of the flip portion toward the center of the circle.

[0015] Furthermore, fixing straps for connecting with a patient are provided on both sides of the outer edge of the fixing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial structural schematic diagram of a hemodialysis central venous catheter fixer proposed in an embodiment of the utility model;

[0017] Figure 2This is a schematic diagram of the unfolded structure of a hemodialysis central venous catheter fixator proposed in an embodiment of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of a central venous catheter in a hemodialysis central venous catheter fixer proposed in an embodiment of the utility model.

[0019] Description of main component symbols:

[0020] Retainer assembly 1 Card slot end 19 Fixed part 11 Catheter locking end 110 Stable tank 12 Rubber ring 111 Cap connection end 13 Fixed cable tie 112 Cap 14 Central venous catheter 2 Catheter locking end 15 Intubation 21 Hinge axis 16 Tee Seat 22 Flipping part 17 Branch pipe 23 Lock end 18 Current limiter 24

[0021] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figures 1 to 3, shown is a central venous catheter fixer for hemodialysis in an embodiment of the utility model, including a fixer assembly 1 for wrapping and fixing the extracorporeal segment of the central venous catheter, the fixer assembly 1 including a fixing portion 11 against the patient's skin, a hinge shaft 16 arranged on one side of the fixing portion 11, a flip portion 17 movably connected to the fixing portion 11 through the hinge shaft 16, at least two catheter locking ends 110 fixedly arranged on the inner side of the fixing portion 11 for fixing part of the central venous catheter 2, a cap connecting end 13 extending outward along the axial ends of the fixing portion 11 and the flip portion 17 respectively, and a cap 14 sleeved on the cap connecting end 13, wherein an accommodating space for accommodating part of the central venous catheter 2 is formed by enclosing the fixing portion 11, the flip portion 17 and the cap 14.

[0026] Furthermore, the central venous catheter 2 includes a cannula 21 for inserting into the patient's body, a three-way seat 22 arranged on the side of the cannula 21 away from the patient, at least two shunt branches 23 connected to the side of the three-way seat 22 away from the cannula 21, and a flow limiting buckle 24 sleeved on the outside of the shunt branch 23. The cannula 21 on the side close to the three-way seat 22, the three-way seat 22, the shunt branch 23 and the flow limiting buckle 24 together constitute the extracorporeal section of the central venous catheter 2. The fixing portion 11 and the flip portion 17 extend outward from the side away from the cap 14 to form a catheter locking end 110, and the catheter locking end 110 is sleeved on the outside of the cannula 21. A rubber ring 111 abutting against the outer edge of the cannula 21 extends from the inner side of the catheter locking end 110 toward the center, and a stabilizing groove 12 is embedded at the place where the fixing part 11 abuts against the patient's skin. The stabilizing groove 12 can increase the contact area between the fixing part 11 and the patient's skin, ensure the stability of the fixing part 11, and prevent the subsequent fixer assembly 1 from rotating during use. A slot end 19 extends from the inner side of the fixing part 11 toward the center of the circle, and a locking buckle end 18 adapted to the slot end 19 extends from the inner side of the flip part 17 toward the center of the circle. Fixing straps 112 for connecting to the patient are provided on both sides of the outer edge of the fixing part 11.

[0027] In the specific implementation, the medical staff can first place the fixator assembly 1 against the central venous catheter 2 inserted into the patient's body, such as the internal jugular vein, femoral vein, etc., and during the abutment operation, the fixator assembly 1 can be placed toward the patient's skin through the setting position of the stabilizing groove 12 on the fixing part 11. It should also be noted that the fixator assembly 1 is arranged so that the catheter locking end 110 is arranged toward the cannula 21, and then the fixator assembly 1 is connected to the patient's catheterization site through the fixing tie 112. In some optional embodiments of the utility model, the fixing tie 112 can be provided with a magic The elastic band, medical tie or Shida buckle of the surgical patch can be used to facilitate medical staff to adjust the tightness according to the different sizes of different parts of different patients and make it convenient to wear. Then, the medical staff can first insert the cannula 21 into the catheter locking end 110, and then successively insert the two branch pipes 23 into the catheter locking end 15 respectively, and the three-way seat 22 and the flow limiting buckle 24 are uniformly placed in the space of the fixing part 11. Then, the medical staff can flip the flip part 17 toward the fixing part 11 through the hinge shaft 16, and make the locking end 18 embedded in the card slot end 19 to complete the initial connection. In some optional embodiments, the design of the locking end 18 and the card slot end 19 can be a conventional male buckle and female buckle connection. Afterwards, when the fixing part 11 and the flip part 17 are closed, the medical staff can sleeve the cap 14 on the outer edge of the cap connection end 13. In some optional embodiments, the connection between the cap 14 and the cap connection end 13 can be a screw connection, and the locking end 18 and the card slot end 19 form a secondary locking of the fixing part 11 and the flip part 17 to prevent the fixer assembly 1 from loosening during use, and at the same time seal one axial side of the fixer assembly 1, and connect. Then, the catheter locking end 110 can wrap the cannula 21 after the fixing portion 11 and the flip portion 17 are closed, and the rubber ring 111 arranged on the inner side of the catheter locking end 110 can fit the outer edge of the cannula 21 to seal its edge, so as to ensure the sealing of the other axial side of the fixer assembly 1. In addition, in some optional embodiments of the present invention, a rubber strip can be arranged at the closed edge of the fixing portion 11 and the flip portion 17 to further ensure the overall sealing effect of the fixer assembly 1, so as to isolate the central venous catheter 2 from contact with the outside world and avoid the risk of infection.

[0028] In summary, the fixed portion 11 can limit and fix the central venous catheter 2 through the catheter locking end 110 set inside it, and then the hinge shaft 16 drives the flipping portion 17 to flip toward the fixed portion 11 and close, so as to wrap the central venous catheter 2. Then, the cap 14 is connected with the cap connecting end 13 to complete the rapid assembly of the fixer assembly 1, and the fixer assembly 1 can effectively isolate the central venous catheter 2 from the outside world to avoid the risk of infection. The operation is simple, convenient and practical, which solves the current treatment method for the extracorporeal segment of the deep venous catheter, which is usually wrapped with gauze and then fixed with medical tape. The operation process is complicated and time-consuming, thereby increasing the probability of catheter infection and affecting efficiency. At the same time, the gauze bandage method has poor sealing and low practicality.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A central venous catheter holder for hemodialysis, characterized in that: The invention comprises a fixing device assembly for wrapping and fixing the extracorporeal segment of a central venous catheter, wherein the fixing device assembly comprises a fixing portion abutting against the patient's skin, a hinge shaft arranged at one side of the fixing portion, a flip portion movably connected to the fixing portion through the hinge shaft, at least two catheter locking ends fixedly arranged inside the fixing portion for fixing a part of the central venous catheter, a cap connecting end extending outwardly along the axial ends of the fixing portion and the flip portion, respectively, and a cap sleeved on the cap connecting end; Wherein, an accommodating space for accommodating part of the central venous catheter is formed by the fixing portion, the flipping portion and the cap.

2. The hemodialysis central venous catheter holder according to claim 1, characterized in that: The central venous catheter comprises a cannula for inserting into a patient's body, a three-way seat arranged on the side of the cannula away from the patient, at least two shunt branches connected to the side of the three-way seat away from the cannula, and a flow limiting buckle sleeved outside the shunt branches.

3. The hemodialysis central venous catheter holder according to claim 2, characterized in that: The portion of the cannula close to one side of the three-way seat, the three-way seat, the shunt branch and the flow limiting buckle together constitute the extracorporeal section of the central venous catheter.

4. The hemodialysis central venous catheter holder according to claim 3, characterized in that: The fixing portion and the flip portion extend outwardly away from one side of the cap to form a catheter locking end, and the catheter locking end is sleeved on the outer periphery of the insertion tube.

5. The hemodialysis central venous catheter holder according to claim 4, characterized in that: A rubber ring abutting against the outer edge of the cannula extends from the inner side of the locking end of the catheter toward the center.

6. The hemodialysis central venous catheter holder according to claim 1, characterized in that: A stabilizing groove is embedded at the position where the fixing part abuts against the patient's skin.

7. The hemodialysis central venous catheter holder according to claim 1, characterized in that: A slot end is extended from the inner side of the fixing portion toward the center of the circle, and a lock end adapted to the slot end is extended from the inner side of the flip portion toward the center of the circle.

8. The hemodialysis central venous catheter holder according to claim 1, characterized in that: Both sides of the outer periphery of the fixing portion are provided with fixing straps for connecting with the patient.

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