Multi-cavity drainage perfusion system

Abstract

The invention discloses a multi-cavity drainage perfusion system which comprises a drainage tube body, a limiting sleeve, a liquid collection device and a three-way valve. The drainage tube body is composed of four independent drainage tubes, each drainage tube is provided with a tube wall, a side drainage hole, a central pipeline, a concave clamping groove, a medicine input pipeline and a convex clamping groove, and the adjacent drainage tubes are detachably connected through the concave clamping grooves and the convex clamping grooves. The liquid collection device comprises a shell, a drainage liquid collection cavity, a medicine input tube, a drainage liquid outflow tube, a medicine distribution cavity, a drainage tube plug and a medicine input tube plug. Modular design is adopted, the four drainage tubes can be flexibly combined or separated for use according to clinical requirements, drainage and medicine infusion of multiple parts are completed in a single puncture hole, and patient trauma and secondary infection risks are remarkably reduced. The device is simple in structure and convenient to operate, is particularly suitable for treating infection around the prosthesis after hip replacement, and has important clinical application value.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a multi-cavity drainage and perfusion system. Background Art

[0002] Joint replacement surgery is an effective method for treating end-stage joint diseases, but postoperative periprosthetic infection is one of the most serious complications, which not only brings great pain to patients, but also significantly increases the cost of treatment. In the treatment of periprosthetic infection, adequate drainage and local drug infusion are key treatment methods. At present, most of the drainage devices commonly used in clinical practice are single-chamber structures, and drainage tubes and perfusion tubes need to be set up separately when performing drainage and drug infusion. Taking hip replacement postoperative infection as an example, since the femoral head and femoral stem areas need to be treated at the same time, the existing technology usually requires opening multiple puncture holes on the patient's skin, and placing drainage tubes and perfusion tubes respectively. This method not only increases the patient's trauma area, but also increases the risk of iatrogenic infection. In addition, the presence of multiple puncture holes also increases the difficulty of nursing and affects the patient's recovery process. Although there are some improved drainage devices on the market, they generally have problems such as complex structure, inconvenient operation, and unsatisfactory drainage effect, and it is impossible to flexibly adjust the drainage and perfusion strategies according to the degree of infection in different parts. Therefore, it is of great clinical significance to develop a medical device that can achieve multi-site drainage and perfusion through a single puncture hole, has a simple structure and is easy to use. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-cavity drainage and perfusion system to solve the technical defect that the existing drainage device needs to open multiple puncture holes on the patient's skin to place drainage tubes and perfusion tubes respectively.

[0004] To this end, the present invention provides a multi-cavity drainage perfusion system, comprising: a drainage tube body, which comprises four drainage tubes spliced ​​together; the drainage tube comprises a tube wall, on which a plurality of side drainage holes are evenly arranged along the axial direction; a concave card groove and a convex card groove are arranged at the end of the tube wall, and the concave card groove and the convex card groove are used to realize a detachable connection between two adjacent drainage tubes; a central pipeline is arranged in the tube wall, and the central pipeline is connected to the side drainage holes and is used for drainage; a drug input pipeline is arranged in the tube wall, and the drug input pipeline is used to transport drugs; a liquid collecting device, which comprises a shell, The shell is provided with a connected drug distribution chamber and four drug input tube plugs, the end of the drug distribution chamber is connected to the drug input tube, and the four drug input tube plugs are respectively plugged into the four drug input pipes; four drainage tube plugs are provided inside the shell, and the four drainage tube plugs are respectively plugged into the four central pipes; the bottom of the shell is provided with a drainage liquid collecting chamber connected to the four drainage tube plugs, and the drainage liquid collecting chamber is connected to the drainage liquid outflow pipe; the three-way valve includes three interfaces, and the three interfaces are respectively connected to the drug input pipe, the drainage liquid outflow pipe and the negative pressure suction device.

[0005] Preferably, it further comprises a limiting sleeve, wherein the limiting sleeve is arranged on the outside of the drainage tube body.

[0006] Preferably, the limiting sleeve is made of medical-grade thermoplastic elastomer material, and the inner diameter of the limiting sleeve is larger than the outer diameter of the drainage tube body.

[0007] Preferably, the tube wall is made of medical grade silicone material.

[0008] Preferably, the shell is made of medical-grade transparent polycarbonate material.

[0009] Preferably, ends of the drainage tube plug and the drug inlet tube plug are both provided with a cut-angle structure.

[0010] Preferably, a multi-channel shunt structure with equal cross-section is provided in the drug dispensing cavity.

[0011] Preferably, the three-way valve changes the connectivity of the internal flow channel by rotating the valve core, connecting the drainage fluid outflow tube and the channel of the negative pressure suction device in the drainage state, and connecting the drug inlet tube and the channel of the drainage fluid outflow tube in the perfusion state.

[0012] Preferably, the four drainage tubes are allocated in a combination ratio of 2:2 or 3:1.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are: The present invention adopts a modular design concept. The four drainage tubes can be adaptively matched in a ratio of 2:2 or 3:1 according to the site and degree of infection to meet different clinical treatment needs. The drainage tube of the present invention adopts an innovative dual-chamber structure design, which integrates the drainage and drug delivery functions into one. The treatment of multiple parts can be completed through a single puncture hole, which significantly reduces the trauma of the patient. The unique concave-convex card slot connection structure ensures the stability and reliability of the connection between the drainage tubes, while maintaining good detachability. The centralized liquid collection device not only realizes the effective collection of drainage fluid, but also ensures the uniform delivery of drugs through the carefully designed drug distribution cavity, thereby improving the accuracy of treatment. The innovative design of the three-way valve realizes the precise switching of drainage and perfusion functions, avoiding cross contamination. In addition, the drainage and perfusion system of the present invention has a reasonable structure, is easy to operate, is easy to promote and use in clinical practice, and can effectively reduce the workload of medical staff.

[0014] Through the above technical scheme, the drainage and perfusion system of the present invention not only significantly reduces the patient's trauma and secondary infection risk, but also improves the treatment effect, provides a new technical means for the treatment of periprosthetic infection, and has important clinical application value and promotion significance.

[0015] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is one of the structural schematic diagrams of the drainage and perfusion system of the present invention; Figure 2 It is a partial structural schematic diagram of the drainage tube body of the present invention; Figure 3 It is a structural schematic diagram of the drainage tube of the present invention; Figure 4 It is a schematic diagram of the end structure of the liquid collecting device of the present invention; Figure 5 is a cross-sectional view of a liquid collecting device of the present invention; Figure 6 This is the second structural schematic diagram of the drainage and perfusion system of the present invention.

[0017] Description of reference numerals: 1-drainage tube body; 1-1-first drainage tube; 1-2-second drainage tube; 1-3-third drainage tube; 1-4-fourth drainage tube; 1-1-1-tube wall; 1-1-2-side drainage hole; 1-1-3-central pipeline; 1-1-4-concave card slot; 1-1-5-drug input pipeline; 1-1-6-convex card slot; 2-Limiting sleeve; 3-liquid collecting device; 3-1-housing; 3-2-drainage liquid collecting chamber; 3-3-drug inlet tube; 3-4-drainage liquid outlet tube; 3-5-drug dispensing chamber; 3-6-drainage tube plug; 3-7-drug inlet tube plug; 4- Three-way valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] The multi-cavity drainage and perfusion system of the present invention is mainly used for the treatment of periprosthetic infection after joint replacement, and is particularly suitable for the treatment of infection in the femoral head and femoral stem area after hip replacement.

[0020] like Figures 1 to 6 As shown, the multi-chamber drainage and perfusion system of the present invention includes a drainage tube body 1, a limiting sleeve 2, a liquid collecting device 3 and a three-way valve 4.

[0021] The drainage tube body 1 is composed of four drainage tubes of the same structure, which are spliced ​​and combined into the drainage tube body; the cross-section of the drainage tube is mainly arc-shaped, and the cross-section of the drainage tube body is circular as a whole.

[0022] like Figure 2 , Figure 3 As shown, the shapes and structures of the four drainage tubes are the same, and the four drainage tubes are respectively defined as a first drainage tube 1-1, a second drainage tube 1-2, a third drainage tube 1-3 and a fourth drainage tube 1-4.

[0023] The drainage tube comprises a tube wall 1-1-1, and the tube wall 1-1-1 is made of medical-grade silicone material and has good biocompatibility and flexibility.

[0024] A plurality of side drainage holes 1-1-2 are evenly arranged along the axial direction on the surface of the tube wall 1-1-1, which ensures a sufficient drainage effect without affecting the strength of the tube body.

[0025] Each drainage tube adopts a double-lumen structure design, including a central pipeline 1-1-3 for drainage and a drug input pipeline 1-1-5 for drug delivery, the central pipeline 1-1-3 and the drug input pipeline 1-1-5 are separated; the central pipeline 1-1-3 and the drug input pipeline 1-1-5 are both arranged along the axial direction of the tube wall 1-1-1, the central pipeline 1-1-3 extends axially from one end of the tube wall 1-1-1 to the other end of the tube wall 1-1-1, and the drug input pipeline 1-1-5 extends axially from one end of the tube wall 1-1-1 to the other end of the tube wall 1-1-1. The central pipeline 1-1-3 is connected to multiple side drainage holes 1-1-2, and the central pipeline 1-1-3 is used to achieve drainage.

[0026] The end of the tube wall 1-1-1 is provided with a concave groove 1-1-4 and a convex groove 1-1-6, and adjacent drainage tubes are detachably connected through the concave groove 1-1-4 and the convex groove 1-1-6; for example, the convex groove 1-1-6 of the first drainage tube 1-1 is engaged in the concave groove 1-1-4 of the third drainage tube 1-3, the convex groove 1-1-6 of the second drainage tube 1-2 is engaged in the concave groove 1-1-4 of the first drainage tube 1-1, and the convex groove 1-1-6 of the third drainage tube 1-3 is engaged in the fourth drainage tube 1-4 The convex groove 1-1-6 of the fourth drainage tube 1-4 is engaged in the concave groove 1-1-4 of the second drainage tube 1-2, thereby realizing the splicing and assembly of the four drainage tubes.

[0027] The concave slot 1-1-4 and the convex slot 1-1-6 can be designed as dovetail slots, and this connection structure not only ensures the stability of the drainage tube when used in combination, but also ensures the convenience of the drainage tube when used separately. Alternatively, the cross-sectional shape of the concave slot 1-1-4 and the convex slot 1-1-6 can be an arc shape, which only ensures the stability of the drainage tube when used in combination, but also ensures the convenience of the drainage tube when used separately.

[0028] The limiting sleeve 2 is sleeved on the outside of the drainage tube body 1. The limiting sleeve 2 is made of medical-grade thermoplastic elastomer material. The inner diameter of the limiting sleeve 2 is slightly larger than the outer diameter of the drainage tube body 1, which can ensure that the limiting sleeve 2 can be sleeved on the outside of the drainage tube body 1. The design of the limiting sleeve 2 can not only prevent the drainage tube from being excessively opened in the separated state, but also play a role of fixing and guiding, ensuring that the four drainage tubes can be stably and effectively spliced ​​together.

[0029] The surface of the limiting sleeve 2 is specially treated to have good biocompatibility and antibacterial properties. For example, the surface of the limiting sleeve 2 is provided with a biocompatible coating and / or an antibacterial coating, so that the limiting sleeve 2 has good biocompatibility and antibacterial properties.

[0030] like Figure 4 and Figure 5 As shown, the liquid collecting device 3 includes a housing 3-1, a drainage liquid collecting chamber 3-2, a drug inlet tube 3-3, a drainage liquid outflow tube 3-4, a drug distribution chamber 3-5, a drainage tube plug 3-6 and a drug inlet tube plug 3-7.

[0031] The outer shell 3 - 1 is made of medical-grade transparent polycarbonate material, which has good impact resistance and transparency, making it easy for medical staff to observe the properties and quantity of the drainage fluid.

[0032] The four drainage tube plugs 3-6 are symmetrically arranged inside the shell 3-1. The cross-sectional shape of the drainage tube plugs 3-6 is adapted to the cross-sectional shape of the central pipe 1-1-3. The four drainage tube plugs 3-6 are respectively plugged into the four central pipes 1-1-3.

[0033] The bottom of the housing 3-1 is provided with a drainage liquid collection chamber 3-2 connected to four drainage tube plugs 3-6, and the drainage liquid collection chamber 3-2 is connected to the drainage liquid outflow tube 3-4. The drainage liquid collection chamber 3-2 adopts a conical design to ensure that the drainage liquid can be fully collected and smoothly discharged through the drainage liquid outflow tube 3-4.

[0034] Four drug inlet tube plugs 3-7 are symmetrically arranged inside the housing 3-1. The cross-sectional shape of the drug inlet tube plugs 3-7 matches the drug inlet pipeline 1-1-5. The four drug inlet tube plugs 3-7 are respectively plugged into the drug inlet pipeline 1-1-5.

[0035] The four drug input tube plugs 3-7 are all connected to the drug distribution chamber 3-5. The drug distribution chamber 3-5 is provided with a multi-channel shunt structure with equal cross-section. Through fluid mechanics optimization design, it can ensure that the drug can be evenly distributed to each drug input pipeline 1-1-5.

[0036] The end of the drainage tube plug 3-6 is provided with an angled structure, which can ensure that the drainage tube plug 3-6 is conveniently and reliably plugged into the central pipe 1-1-3.

[0037] The end of the drug inlet tube plug 3-7 is provided with an angled structure, which can ensure that the drug inlet tube plug 3-7 is conveniently and reliably plugged into the drug inlet pipeline 1-1-5.

[0038] The three-way valve 4 is made of medical-grade polypropylene material and has three interfaces, which are respectively used to connect the drainage fluid outflow tube 3-4, the drug input tube 3-3 and the negative pressure suction device (not shown in the figure).

[0039] The three-way valve 4 adopts an anti-misoperation design and has clear switch indications. The connection state of the internal flow channel can be changed by rotating the valve core, thereby realizing the switching of the drainage and perfusion functions.

[0040] In the drainage state, the three-way valve 4 conducts the drainage fluid outflow tube 3-4 and the channel of the negative pressure suction device, and closes the drug input channel. In the perfusion state, the negative pressure suction channel is closed, and the channels of the drug input tube 3-3 and the drainage fluid outflow tube 3-4 are conducted, so that the drug can be smoothly injected.

[0041] The working process of the present invention comprises: The number and distribution of drainage tubes are determined according to the specific situation of the infected part of the patient. Taking periprosthetic infection after hip replacement as an example, when the infection degree of the femoral head and femoral stem is similar, the drainage tubes can be distributed in a 2:2 manner; when the infection of a certain part is more serious, a 3:1 configuration can be used to make the drainage more targeted. The required number of drainage tubes are combined together through the engagement connection of the concave card slot 1-1-4 and the convex card slot 1-1-6, and are fixed with the limit sleeve 2.

[0042] Under the guidance of the imaging device, the assembled drainage tube is accurately inserted into the affected area through the puncture point to ensure that the side drainage hole 1-1-2 is located at the infected area. After the drainage tube is connected to the liquid collection device 3, the three-way valve 4 is adjusted to the drainage position, and the negative pressure suction device is turned on. The exudate from the infected area enters the central pipeline 1-1-3 through the side drainage hole 1-1-2, and is collected into the drainage fluid collection cavity 3-2 through the central pipeline 1-1-3 and the drainage tube plug 3-6, and is discharged through the drainage fluid outflow tube 3-4 and the three-way valve 4. Medical staff can observe the properties, color and quantity of the drainage fluid through the transparent shell and evaluate the treatment effect in time. When drug infusion is required, the three-way valve 4 is adjusted to the infusion position, the negative pressure suction channel is closed, and the prepared antibiotic solution is injected from the three-way valve 4, enters the drug distribution cavity 3-5 through the drug input tube 3-3, and then evenly distributed to each drug input tube plug 3-7. The drug is then input into the drug input pipeline 1-1-5 through the drug input tube plug 3-7, and finally delivered to the infected part. During the treatment process, medical staff can adjust the negative pressure according to the drainage fluid situation, and adjust the frequency and dosage of drug infusion according to the patient's condition. When the drainage fluid becomes clear, the drainage tube can be removed in time under the guidance of a doctor.

[0043] The drainage and perfusion system of the present invention has a simple structure and is easy to use. It can achieve drainage and drug perfusion in multiple parts through a single puncture point, significantly reducing the trauma of patients and the risk of secondary infection, and has good clinical application prospects.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A multi-chamber drainage and perfusion system, characterized in that: include: The drainage tube body comprises four connected drainage tubes; the drainage tube comprises a tube wall, on which a plurality of side drainage holes are evenly arranged along the axial direction; a concave card slot and a convex card slot are arranged at the end of the tube wall, and the concave card slot and the convex card slot are used to realize the detachable connection between two adjacent drainage tubes; a central pipeline is arranged in the tube wall, and the central pipeline is connected with the side drainage holes and used for drainage; a drug input pipeline is arranged in the tube wall, and the drug input pipeline is used for delivering drugs; A liquid collecting device, comprising a shell, wherein a drug dispensing cavity and four drug input tube plugs are connected to each other, the end of the drug dispensing cavity is connected to a drug input tube, and the four drug input tube plugs are respectively plugged into the four drug input pipes; four drainage tube plugs are arranged inside the shell, and the four drainage tube plugs are respectively plugged into the four central pipes; a drainage liquid collecting cavity connected to the four drainage tube plugs is arranged at the bottom of the shell, and the drainage liquid collecting cavity is connected to a drainage liquid outflow pipe; The three-way valve comprises three interfaces, and the three interfaces are respectively connected to the drug inlet tube, the drainage fluid outlet tube and the negative pressure suction device.

2. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: It also includes a limiting sleeve, which is arranged on the outside of the drainage tube body.

3. The multi-chamber drainage and perfusion system according to claim 2, characterized in that: The limiting sleeve is made of medical-grade thermoplastic elastomer material, and the inner diameter of the limiting sleeve is greater than the outer diameter of the drainage tube body.

4. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: The tube wall is made of medical grade silicone material.

5. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: The shell is made of medical-grade transparent polycarbonate material.

6. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: The ends of the drainage tube plug and the drug inlet tube plug are both provided with a cut-angle structure.

7. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: A multi-channel flow-dividing structure with equal cross-section is arranged in the medicine dispensing cavity.

8. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: The three-way valve changes the connection state of the internal flow channel by rotating the valve core, connecting the drainage fluid outflow tube and the channel of the negative pressure suction device in the drainage state, and connecting the drug input tube and the channel of the drainage fluid outflow tube in the perfusion state.

9. The multi-chamber drainage and perfusion system according to claim 1, characterized in that: The four drainage tubes are distributed in a 2:2 or 3:1 combination.

Images