Fixing device for connection of deep vein indwelling catheter and extracorporeal circulation pipeline
By designing a fixing device including the box and baffle, the connection between the deep vein indwelling catheter and the external circulation pipeline is fixed using the clamp slot and the clamping structure, the problem of unfixed fixation caused by artificial tightening of the screw buckle is solved, and stable connection is achieved and thermal expansion and contraction is avoided.
Patent Information
- Application Number
- CN202323438926.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-18
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2033-12-18
AI Technical Summary
In the prior art, when using deep vein indwelling catheters to connect to the external circulation pipeline, artificial tightening of the screw buckle leads to excessive tightness or looseness of the fixing, resulting in thermal expansion, cold contraction or tripping at the connection.
A fixing device is designed, including a box body and a baffle. Through the slit and engaging structure on the box body, the protruding part connected by the indwelling conduit and the external circulation pipeline is fixed by using a fixed spacing slit and baffle to fix the protrusions after the indwelling conduit and the external circulation pipeline to avoid the influence of artificial operation.
The firm connection between the deep vein indwelling catheter and the extracorporeal circulation pipeline is achieved, avoiding the inability to separate or trip due to artificial tightening of the screw buckle, and at the same time, the thermal expansion and contraction problem at the connection is avoided.
Smart Images
Figure CN222585356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fixing device for connecting a deep vein indwelling catheter with an extracorporeal circulation pipeline. Background Art
[0002] When hemodialysis patients use a single-needle double-lumen indwelling catheter in the internal jugular vein or a single-needle double-lumen temporary catheter in the femoral vein for hemodialysis and connect it to the extracorporeal circulation circuit, an insertable fixation method with a spiral buckle is used. Currently, the fixation method of manually tightening the spiral buckle is used in clinical practice. Due to personal techniques, the tightness of the spiral buckle varies, resulting in the spiral buckle being too tight, making it impossible to separate the indwelling catheter and the extracorporeal circulation circuit at the end of treatment; or the spiral buckle is too loose, resulting in the phenomenon of only insertion and disengagement. In addition, the blood circulation for 3-4 hours raises the temperature of the catheter to 37°C, and the thermal expansion and contraction cause the connection to be too tight and unable to be separated; or the spiral buckle is not fully tightened and is too loose, resulting in disengagement. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a fixing device for connecting a deep venous indwelling catheter with an extracorporeal circulation pipeline. Its purpose is to provide a fixing device to eliminate the influence of human operation. The protrusions of the various parts of the indwelling catheter and the extracorporeal circulation pipeline after connection can be fixed by using grooves and baffles with fixed spacing, which can not only make the connection firm and prevent the pipeline from slipping, but also avoid the phenomenon of being unable to separate due to manually tightening the spiral buckle.
[0004] To achieve the above-mentioned purpose, the fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation pipeline provided by the utility model is implemented as follows: A fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation pipeline comprises a box body: the box body comprises a bottom box part and a cover part, and at least four groups of baffles are respectively arranged on the inner surfaces of the bottom box part and the cover part, and the first, second, third and fourth groups of baffles are arranged in sequence, each group of baffles consists of two baffles, and grooves are arranged on the baffles, and the positions of the groups of baffles on the bottom box part and the cover part correspond to each other, and the first group of the bottom box part is provided with a groove, and the positions of the groups of baffles on the bottom box part and the cover part correspond to each other. After the second and second groups of baffles of the bottom box part are closed with the first and second groups of baffles of the cover part, the baffle grooves are in contact with the flat plastic protrusions of the deep vein indwelling catheter; after the second and third groups of baffles of the bottom box part are closed with the second and third groups of baffles of the cover part, the baffle grooves are in contact with the protrusions after the indwelling catheter and the extracorporeal circulation pipeline are connected, and after the third and fourth groups of baffles of the bottom box part are closed with the third and fourth groups of baffles of the cover part, the baffle grooves are in contact with the special-shaped protrusions of the extracorporeal circulation pipeline, and the catheter and pipeline pass through the fixing device and the baffles in the box body.
[0005] The four groups of baffles are arranged in parallel.
[0006] The groove on each baffle is semicircular or semi-elliptical, and the radius of the semicircle or the short radius of the semi-ellipse is less than or equal to the radius of the pipeline part in contact with the baffle.
[0007] The baffle is made of elastic material.
[0008] The bottom box part is provided with a card slot, and the cover part is provided with a card joint. When the box body is closed, the card slot and the card joint are engaged with each other.
[0009] After the box body is closed, each group of baffles on the bottom box part and each group of baffles on the cover part may contact each other, or partially not contact each other, or completely not contact each other.
[0010] The distance between the second and third groups of baffles is equal to the distance between the protruding parts after the indwelling catheter is connected to the extracorporeal circulation pipeline.
[0011] The box body is made of degradable medical polymer. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The utility model is a schematic diagram of the structure of a fixing device for connecting a deep vein indwelling catheter with an extracorporeal circulation pipeline. DETAILED DESCRIPTION
[0013] A fixing device for connecting a deep vein indwelling catheter with an extracorporeal circulation pipeline comprises a box body: the box body comprises a bottom box part and a cover part, at least four groups of baffles are respectively arranged on the inner surfaces of the bottom box part and the cover part, the first, second, third and fourth groups of baffles are arranged in sequence, each group of baffles consists of two baffles, grooves are arranged on the baffles, and the positions of the groups of baffles on the bottom box part and the cover part correspond to each other, after the first and second groups of baffles of the bottom box part are closed with the first and second groups of baffles of the cover part, the baffle grooves are in contact with the flat plastic protrusions of the deep vein indwelling catheter; after the second and third groups of baffles of the bottom box part are closed with the second and third groups of baffles of the cover part, the baffle grooves are in contact with the protrusions after the indwelling catheter and the extracorporeal circulation pipeline are connected, after the third and fourth groups of baffles of the bottom box part are closed with the third and fourth groups of baffles of the cover part, the baffle grooves are in contact with the special-shaped protrusions of the extracorporeal circulation pipeline, and the catheter and the pipeline pass through the fixing device and the baffles in the box body.
Claims
1. A fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation pipeline, comprising a box body, characterized in that: The box body comprises a bottom box part and a cover part, wherein at least four groups of baffles are respectively arranged on the inner surfaces of the bottom box part and the cover part, wherein the first, second, third and fourth groups of baffles are arranged in sequence, each group of baffles consists of two baffles, and grooves are arranged on the baffles, and the positions of the groups of baffles on the bottom box part and the cover part correspond to each other, and when the first and second groups of baffles of the bottom box part and the first and second groups of baffles of the cover part are closed, the baffle grooves are in contact with the flat plastic protrusions of the deep vein indwelling catheter; when the second and third groups of baffles of the bottom box part and the second and third groups of baffles of the cover part are closed, the baffle grooves are in contact with the flat plastic protrusions of the deep vein indwelling catheter The protruding parts of the tube and the extracorporeal circulation pipeline after being connected are in contact with each other. After the third and fourth groups of baffles of the bottom box part and the third and fourth groups of baffles of the cover part are closed, the baffle grooves are in contact with the special-shaped protruding parts of the extracorporeal circulation pipeline, and the catheter and the pipeline pass through the fixing device and the baffles in the box body; and the grooves on each baffle are semicircular or semi-elliptical, the radius of the semicircle or the short radius of the semi-ellipse is less than or equal to the radius of the pipeline part in contact with the baffle, and the baffle is made of elastic material; the distance between the second and third groups of baffles is equal to the distance between the protruding parts after the indwelling catheter is connected to the extracorporeal circulation pipeline.
2. A fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation line according to claim 1, characterized in that: The four groups of baffles are arranged in parallel.
3. The fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation line according to claim 1, characterized in that: The bottom box part is provided with a card slot, and the cover part is provided with a card joint. When the box body is closed, the card slot and the card joint are engaged with each other.
4. A fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation line according to claim 1, characterized in that: After the box body is closed, each group of baffles on the bottom box part and each group of baffles on the cover part contact each other.
5. The fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation line according to claim 1, characterized in that: After the box body is closed, each group of baffles on the bottom box part and each group of baffles on the cover part are partially or completely not in contact with each other.
6. The fixing device for connecting a deep vein indwelling catheter to an extracorporeal circulation line according to claim 1, characterized in that: The box body is made of degradable medical polymer.