Outer protective sleeve for CVC catheter
By designing an outer protective sleeve for CVC catheters and utilizing a combination of tee connectors and various components, the problem of unstable external fixation of the catheter was solved, achieving stable fixation and comfortable use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIFTH MEDICAL CENT OF CHINESE PLA GENERAL HOSPITAL
- Filing Date
- 2025-04-02
- Publication Date
- 2026-05-12
AI Technical Summary
Existing CVC catheters lack effective external protection and fixation structures during use, resulting in insecure external fixation of the catheter, which can easily affect the insertion depth of the internal catheter and cause patient discomfort.
A protective sleeve for CVC catheters was designed, comprising a tee connector, a dressing body, a non-woven fabric dressing strip, a limiting strip, and a buckle. The combination of these components achieves the fixation and limiting protection of the external tube.
实现了对CVC导管外管的稳定固定，避免了因外部固定不牢固导致的导管置入深度变化和患者不适感，提高了使用的舒适性。
Smart Images
Figure CN224220555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CVC catheter technology, specifically to a CVC catheter outer protective sleeve. Background Technology
[0002] A CVC catheter, or central venous catheter, is a medical catheter that is inserted percutaneously and has its tip placed in the superior or inferior vena cava.
[0003] The aforementioned device lacks an external tube fixation and protection structure for the CVC catheter during use. As a result, the external protection of the existing CVC catheter is mostly achieved by applying dressings or medical tape, which has poor fixation effect. Furthermore, if the external catheter is accidentally pulled, it can easily affect the insertion depth of the internal catheter, thereby causing strong discomfort to the patient. Based on the shortcomings of the existing technology, this utility model designs an external protective sleeve for the CVC catheter. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an outer protective sleeve for CVC catheters, which has the advantages of external tube fixation and limiting protection for CVC catheters.
[0005] This utility model provides the following technical solution: a CVC catheter outer protective sleeve, including a three-way connector, an adhesive body is fixedly bonded to the upper surface of the three-way connector, an outer tube and an inner tube are respectively connected to the front and rear ends of the three-way connector, and a protective mechanism is provided on the adhesive body to facilitate the fixing and protection of the inner tube.
[0006] The protective mechanism includes a non-woven fabric dressing strip, a second fixing strip, a limiting strip, a bottom arc groove, a buckle, an upper protective sleeve, a top arc groove, and a slot. The non-woven fabric dressing strip is fixedly bonded to the upper surface of the dressing body. The second fixing strip is located at the edge of the upper surface of the non-woven fabric dressing strip. The limiting strip is fixedly connected to the upper surface of the non-woven fabric dressing strip. The bottom arc groove is located on the upper surface of the limiting strip. The buckle is fixedly connected to the upper surface of the limiting strip. The upper protective sleeve is located on the upper surface of the limiting strip. The top arc groove is located on the lower surface of the upper protective sleeve. The slot extends through the lower surface of the upper protective sleeve.
[0007] As a preferred embodiment of this utility model, the outer end of the outer tube is fixedly connected to a connector, and a locking buckle is slidably engaged on the outer tube.
[0008] As a preferred embodiment of this utility model, a non-woven fabric dressing layer is fixedly connected to the bottom of the dressing body, and a first fixing groove is formed on the edge of the dressing body and the non-woven fabric dressing layer facing the protective mechanism.
[0009] As a preferred embodiment of this utility model, the top arc groove is located directly above the bottom arc groove, and the snap fastener is located inside the slot.
[0010] In a preferred embodiment of this invention, the second fixing strip is disposed above the first fixing groove.
[0011] As a preferred embodiment of this utility model, the outer pipe clamp is disposed inside the pipe clamp groove.
[0012] As a preferred embodiment of this utility model, the outer tube clamp is disposed inside the bottom arc groove and the top arc groove.
[0013] As a preferred technical solution of this utility model, the two sets of outer tubes are disposed inside the first fixing groove and the second fixing strip.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This type of CVC catheter outer protective sleeve, after the inner tube is placed in the patient's body, the dressing body and non-woven fabric dressing layer are attached and fixed to the patient's skin from above the tee connector and the inner tube. Then, the two outer tubes are slightly bent and passed through the first fixing groove to the top, and the non-woven fabric dressing strip is placed below the two outer tubes. The second fixing strip is set on the outside of the outer tubes and attached and fixed to the patient's skin and the dressing body for fixation. At this time, the two outer tubes are respectively inserted into the bottom arc groove for limiting. Then, the top arc groove on the upper protective sleeve is aligned with the direction of the bottom arc groove, and the slot and buckle are aligned before the protective sleeve is closed downward. The limiting strip, the upper protective sleeve, the bottom arc groove and the top arc groove are used to clamp and fix the two outer tubes. At the same time, the buckle is locked into the slot. Finally, the outer tube is pressed close to the connector end and locked into the tube clamp groove for limiting. This device facilitates limiting and protecting the outer end of the outer tube. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection structure between the CVC catheter body and the dressing of this utility model;
[0018] Figure 3 This is a schematic diagram of the exploded structure of the connection between the inner and outer tubes of this utility model;
[0019] Figure 4 This is a schematic diagram of the connection structure between the outer tube and the protection mechanism of this utility model;
[0020] Figure 5 This is a schematic diagram of the explosion structure of the protection mechanism of this utility model.
[0021] In the diagram: 1. Tee connector; 101. Outer tube; 102. Connector; 103. Lock; 104. Inner tube; 2. Adhesive body; 201. Non-woven fabric adhesive layer; 202. First fixing groove; 3. Protective mechanism; 301. Non-woven fabric adhesive strip; 302. Second fixing strip; 303. Limiting strip; 304. Bottom arc groove; 305. Buckle; 306. Upper protective sleeve; 307. Top arc groove; 308. Clip groove; 309. Pipe clamp groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-5 A CVC catheter outer protective sleeve includes a tee connector 1, an adhesive body 2 fixedly bonded to the upper surface of the tee connector 1, an outer tube 101 and an inner tube 104 respectively connected to the front and rear ends of the tee connector 1, a protective mechanism 3 for fixing and protecting the inner tube 104 on the adhesive body 2, a connector 102 fixedly connected to the outer end of the outer tube 101, a locking buckle 103 slidably engaged on the outer tube 101, the outer tube 101 being engaged inside the tube clamp groove 309, the outer tube 101 being clamped inside the bottom arc groove 304 and the top arc groove 307, and two sets of outer tubes 101 penetrating inside the first fixing groove 202 and the second fixing strip 302.
[0024] Please see Figure 3 The bottom of the dressing body 2 is fixedly connected to a non-woven fabric dressing layer 201, and a first fixing groove 202 is provided at the edge of the dressing body 2 and the non-woven fabric dressing layer 201 facing the protective mechanism 3.
[0025] By setting the non-woven fabric dressing layer 201 and the first fixing groove 202, the three-way connector 1 and the inner tube 104 can be attached and fixed to the skin. By setting the first fixing groove 202, the outer tube 101 can be flipped up to the top of the dressing body 2 and fixed by the auxiliary protection mechanism 3.
[0026] Please see Figure 4-5The protective mechanism 3 includes a non-woven fabric dressing strip 301, a second fixing strip 302, a limiting strip 303, a bottom arc groove 304, a buckle 305, an upper protective sleeve 306, a top arc groove 307, and a slot 308. The non-woven fabric dressing strip 301 is fixedly bonded to the upper surface of the dressing body 2. The second fixing strip 302 is formed at the edge of the upper surface of the non-woven fabric dressing strip 301. The limiting strip 303 is fixedly connected to the upper surface of the non-woven fabric dressing strip 301. The bottom arc groove 304 is formed... On the upper surface of the limiting strip 303, a buckle 305 is fixedly connected to the upper surface of the limiting strip 303. An upper protective sleeve 306 is disposed on the upper surface of the limiting strip 303. A top arc groove 307 is opened on the lower surface of the upper protective sleeve 306. A slot 308 is opened through the lower surface of the upper protective sleeve 306. The top arc groove 307 is disposed directly above the bottom arc groove 304. The buckle 305 is snapped into the inside of the slot 308. A second fixing strip 302 is disposed above the first fixing groove 202.
[0027] The non-woven fabric strip 301 and the second fixing strip 302 are provided to fix the outer tube 101. The limiting strip 303, the bottom arc groove 304, the buckle 305, the upper protective sleeve 306, the top arc groove 307 and the slot 308 are provided to clamp and fix the two outer tubes 101. The pipe clamp groove 309 is provided to clamp and fix the outer end of the outer tube 101.
[0028] Working principle: When a CVC catheter outer protective sleeve is used, in the initial state, the outer tube 101 and the inner tube 104 are first connected to the two ends of the tee connector 1 respectively. At the same time, the connector 102 and the locking buckle 103 are set on the outer tube 101. The tee connector 1, the outer tube 101 and the inner tube 104 are connected to the dressing body 2, the non-woven fabric dressing layer 201, the non-woven fabric dressing strip 301 and the second fixing strip 302 to fix the tee connector 1, the outer tube 101 and the inner tube 104 inserted into the body and outside the body. The limiting strip 303 fixedly connected to the upper surface of the non-woven fabric dressing strip 301 has a bottom arc groove 304. The upper protective sleeve 306 and the top arc groove 307 are set above the bottom arc groove 304 to protect the outer end of the outer tube 101.
[0029] When protection of the outer end of the outer tube 101 is required, first, after the inner tube 104 is placed inside the patient's body, the dressing body 2 and the non-woven fabric dressing layer 201 are attached and fixed to the patient's skin from above the tee connector 1 and the inner tube 104. Then, the two outer tubes 101 are slightly bent and passed through the first fixing groove 202 to the top, and the non-woven fabric dressing strip 301 is placed below the two outer tubes 101, so that the second fixing strip 302 is set on the outside of the outer tubes 101 and attached and fixed to the patient's skin and the dressing body 2 for fixation. At this time, the two outer tubes 101 are respectively inserted into the bottom arc groove 3. The upper protective sleeve 306 is positioned within 04. Then, the top arc groove 307 and bottom arc groove 304 on the upper protective sleeve 306 are aligned. The slot 308 and buckle 305 are aligned and the upper protective sleeve 306 is closed downwards. The two outer tubes 101 are clamped and fixed by the limiting strip 303, the upper protective sleeve 306, the bottom arc groove 304 and the top arc groove 307. At the same time, the buckle 305 is locked into the slot 308. Finally, the outer tube 101 is pressed into the pipe clamp groove 309 near the connector 102 for positioning. This device is convenient for limiting and protecting the outer end of the outer tube 101.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protective sleeve for a CVC catheter, comprising a tee connector (1), characterized in that: The upper surface of the three-way connector (1) is fixedly bonded with the application body (2), and the front and rear ends of the three-way connector (1) are respectively connected to the outer tube (101) and the inner tube (104). The application body (2) is provided with a protective mechanism (3) to facilitate the fixing and protection of the inner tube (104). The protective mechanism (3) includes a non-woven fabric dressing strip (301), a second fixing strip (302), a limiting strip (303), a bottom arc groove (304), a buckle (305), an upper protective sleeve (306), a top arc groove (307), and a slot (308). The non-woven fabric dressing strip (301) is fixedly bonded to the upper surface of the dressing body (2). The second fixing strip (302) is located at the edge of the upper surface of the non-woven fabric dressing strip (301). The positioning strip (303) is fixedly connected to the upper surface of the non-woven fabric dressing strip (301). The bottom arc groove (304) is opened on the upper surface of the positioning strip (303). The buckle (305) is fixedly connected to the upper surface of the positioning strip (303). The upper protective sleeve (306) is set on the upper surface of the positioning strip (303). The top arc groove (307) is opened on the lower surface of the upper protective sleeve (306). The slot (308) is opened through the lower surface of the upper protective sleeve (306).
2. The CVC catheter outer protective sleeve according to claim 1, characterized in that: The outer end of the outer tube (101) is fixedly connected to a connector (102), and a latch (103) is slidably engaged on the outer tube (101).
3. The CVC catheter outer protective sleeve according to claim 1, characterized in that: The bottom of the dressing body (2) is fixedly connected to a non-woven fabric dressing layer (201), and the dressing body (2) and the non-woven fabric dressing layer (201) are provided with a first fixing groove (202) at the edge facing the protective mechanism (3).
4. The CVC catheter outer protective sleeve according to claim 1, characterized in that: The top arc groove (307) is located directly above the bottom arc groove (304), and the buckle (305) is snapped into the inside of the buckle groove (308).
5. The CVC catheter outer protective sleeve according to claim 3, characterized in that: The second fixing strip (302) is positioned above the first fixing groove (202).
6. The CVC catheter outer protective sleeve according to claim 2, characterized in that: The outer tube (101) is snapped into the inside of the pipe clamp groove (309).
7. The CVC catheter outer protective sleeve according to claim 2, characterized in that: The outer tube (101) is clamped inside the bottom arc groove (304) and the top arc groove (307).
8. The CVC catheter outer protective sleeve according to claim 2, characterized in that: The two sets of outer tubes (101) are disposed inside the first fixing groove (202) and the second fixing strip (302).