Minimally invasive flushing and drainage device for knee joint
By designing a minimally invasive flushing drainage device, using the Luer joint and stop clamping technology, the large incision and trauma problems caused by traditional knee joint incision drainage are solved, and knee joint flushing and drainage without incision is achieved, reducing the risk of scars and infection.
Patent Information
- Application Number
- CN202421538436.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Traditional knee incision and drainage surgery leads to problems such as large incisions, high trauma to patients, and obvious postoperative wound scars.
A minimally invasive flushing drainage device is designed, and by flushing the Luer joint and stop clip of the drainage catheter, it is possible to insert the knee joint without incision, for flushing and drainage.
It effectively reduces trauma to patients, avoids obvious scars after surgery, and can achieve simultaneous flushing and drainage, reducing the risk of infection.
Smart Images
Figure CN222998082U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a flushing and drainage device, specifically a minimally invasive flushing and drainage device for the knee joint. Background Art
[0002] Synovitis is a common clinical disease, and the main symptom is knee joint effusion. There are many reasons for knee joint effusion, and it is not easy for the effusion to completely subside. Conventional drug treatment methods are difficult to achieve results. In recent years, for those with poor efficacy of conventional drug treatment, knee joint incision and drainage are performed. The traditional knee joint incision and drainage requires an incision in the patient's knee joint, then a drainage tube is placed into the knee joint and the incision is sutured for drainage. Continuous flushing is required for knee joint incision and drainage, and usually two catheters need to be placed, one for flushing and one for drainage. The traditional knee joint incision and drainage has a large incision, causes great trauma to the patient, and has obvious postoperative wound scars. Content of the Utility Model
[0003] The purpose of the utility model is to provide a minimally invasive flushing and drainage device for the knee joint to solve the problems of large incision, great trauma to the patient and obvious postoperative wound scars caused by traditional knee joint incision and drainage.
[0004] The technical solution of the utility model is as follows:
[0005] It includes a flushing and drainage catheter. One end of the flushing and drainage catheter is provided with a Luer connector, and the other end is an open end; a partition layer that divides the cross-section of the catheter body into two is arranged in the catheter body of the flushing and drainage catheter. One end of the partition layer is sealed on one side of the inner wall of the catheter body, and the other end of the partition layer is sealed on the other side of the inner wall of the catheter body, so that the flushing and drainage catheter forms two non-communication inner cavities; flushing holes are opened on the tube wall on the side opposite to the partition layer, and drainage holes are opened on the tube wall on the other side opposite to the partition layer; the end provided with the Luer connector is communicated with the flushing holes through the inner cavity, and the open end of the flushing and drainage catheter is communicated with the drainage holes through the inner cavity.
[0006] Further, a stop clamp is arranged between one end of the Luer connector and the flushing holes.
[0007] The utility model does not require knee joint incision and catheter placement. Only need to puncture and guide the drainage catheter into the knee joint through a puncture needle. The area of the knee joint where the utility model is placed has multiple channels, and flushing and drainage can be carried out simultaneously, causing little trauma to the patient, and effectively avoiding or reducing the occurrence of infection; effectively solving the disadvantages of large incision, great trauma to the patient and obvious postoperative wound scars caused by traditional knee joint incision and drainage. Description of the Drawings
[0008] Figure 1In the figure, a is the present utility model, b is a sectional view of a, and c is a sectional view taken along line A-A of a.
[0009] Figure 2 It is the structural diagram of the present utility model.
[0010] Figure 3 It is the structural diagram of the puncture guiding needle.
[0011] Wherein: 101 is the irrigation and drainage catheter; 1011 is the irrigation port; 1012 is the drainage port; 1013 is the irrigation hole; 1014 is the drainage hole; 1015 is the irrigation channel; 1016 is the drainage channel; 102 is the Luer connector; 103 is the stopcock; 2 is the puncture guiding needle; 201 is the tip of the puncture guiding needle; 202 is the end of the puncture guiding needle. Detailed implementation mode
[0012] The present utility model will be further described in detail below.
[0013] As Figure 1 and Figure 2 shown, a minimally invasive irrigation and drainage device for the knee joint provided by the present utility model has a Luer connector 102 at one end (i.e., the irrigation port 1011) of the irrigation and drainage catheter 101, and the other end is an open end, i.e., the drainage port 1012; a partition layer that divides the cross-section of the catheter body into two parts is arranged in the catheter body of the irrigation and drainage catheter 101. One end of the partition layer is sealed to one side of the inner wall of the catheter body, and the other end of the partition layer is sealed to the other side of the inner wall of the catheter body, so that the irrigation and drainage catheter 101 forms two non-communicating inner cavities; an irrigation hole 1013 is opened on the tube wall on the side opposite to the partition layer, and a drainage hole 1014 is opened on the tube wall on the other side opposite to the partition layer; the end where the Luer connector 102 is provided communicates with the irrigation hole 1013 through the inner cavity (i.e., the irrigation channel 1015), and the drainage port 1012 of the irrigation and drainage catheter 101 communicates with the drainage hole 1014 through the inner cavity (i.e., the drainage channel 1016).
[0014] The round tube-shaped irrigation and drainage catheter 101 is integrally formed by a medical polymer material, and includes three main parts: an irrigation end, a drainage indwelling end, and a drainage end. The irrigation hole 1013 and the drainage hole 1014 are opened at the drainage indwelling end. The irrigated drug enters from the irrigation hole 1013 and flows to the affected area, and the effusion enters from the drainage hole 1014 and flows to the drainage port 1012, so that irrigation and drainage can be realized simultaneously. Moreover, the irrigation channel 1015 and the drainage channel 1016 are independent of each other, so the drug entering from the Luer connector 102 will not directly flow out from the drainage channel 1016.
[0015] The irrigation hole 1013 and the drainage hole 1014 can be circular, elliptical, rectangular or triangular.
[0016] One end of the Luer connector 102 is connected to the flushing port 1011 of the flushing and drainage catheter, and the other end is connected to a flushing device or a drug delivery device. The flushing device or the drug delivery device passes the drug through the Luer connector 102 and the flushing channel 1015 and flows out from the flushing hole 1013, so that the flushing disinfectant or drug is injected into the affected area, enabling the affected area to be fully in contact with the drug.
[0017] A stop clamp 103 is provided between the flushing port 1011 and the flushing hole 1013.
[0018] The stop clamp 103 can adjust the entry speed of the drug or the disinfectant.
[0019] As Figure 3 shown, when knee joint drainage is required, the end 203 of the puncture guiding needle 2 is connected to the drainage port 1012 of the circular tube-shaped flushing and drainage device for minimally invasive knee joint. The tip 201 of the puncture guiding needle 2 passes through the affected area to be drained and is pulled outwards until the flushing hole 1013 and the drainage hole 1014 of the circular tube-shaped flushing and drainage device for minimally invasive knee joint are buried in the affected area; at this time, the flushing device injects the cleaning solution into the Luer connector 102, or the drug delivery device injects the drug into the Luer connector 102. The cleaning solution or the drug flows out from the flushing hole 1013 through the flushing channel 1015 to flush the affected area or inject the drug. The effusion in the affected area flows into the drainage hole 1014 and flows out from the drainage port 1012 through the drainage channel 1016. A negative pressure suction source or a drainage bag can be connected to the drainage port 1012, enabling continuous drainage, and thus realizing simultaneous flushing and drainage.
Claims
1. A minimally invasive irrigation and drainage device for a knee joint, characterized in that: The invention comprises a flushing and drainage catheter, one end of which is provided with a Luer connector and the other end is an open end; a partition layer is provided in the tube body of the flushing and drainage catheter to divide the tube body cross section into two, one end of the partition layer is sealed to one side of the inner wall of the tube body, and the other end of the partition layer is sealed to the other side of the inner wall of the tube body, so that the flushing and drainage catheter forms two inner cavities which are not communicated with each other; a flushing hole is provided on the tube wall on the side opposite to the partition layer, and a drainage hole is provided on the tube wall on the other side opposite to the partition layer; one end of the Luer connector is communicated with the flushing hole through the inner cavity, and the open end of the flushing and drainage catheter is communicated with the drainage hole through the inner cavity.
2. The minimally invasive irrigation and drainage device for the knee joint according to claim 1, characterized in that: A stop clamp is placed between one end of the Luer connector and the flushing port.