Central venous catheter connector
By designing the central venous catheter joint, the sliding connection between the venous catheter and the guide cannula is solved, and the difficulty of guiding cannula exit in the multi-channel central venous catheter is improved, and the convenience of operation and stability of use are improved.
Patent Information
- Application Number
- CN202421570041.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-04
AI Technical Summary
When using a multi-channel central venous catheter, the guide cannula cannot be withdrawn in the conventional manner due to the presence of an adapter, resulting in the doctor needing to tear the guide cannula, which increases material cost and operational trouble.
A central venous catheter joint is designed, including a connecting mechanism, a venous catheter and a guide cannula, which is slidingly connected to the guide cannula through the venous catheter, allowing the guide cannula to slide out from the periphery of the venous catheter after use is completed.
The sliding connection between the venous catheter and the guide sleeve improves the convenience of use, reduces the cost of materials, and prevents liquid spills through the design of sealing rings and threaded connections, and improves the stability of use.
Smart Images
Figure CN222983445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical assistance, in particular to a central venous catheter adapter. Background Art
[0002] A central venous catheter (CVC, Central Venous Catheter) is a catheter inserted into the central vein through the internal jugular vein, subclavian vein or femoral vein, used to provide short-term intravenous therapy for patients, which can greatly reduce the pain caused by frequent intravenous punctures to patients, avoid the influence and damage of irritating drugs on veins, has a long retention time and a low complication rate, and a multi-channel central venous catheter is a central venous catheter with multiple injection channels;
[0003] In the case of using a multi-channel central venous catheter, due to the existence of an adapter, the guiding cannula cannot be withdrawn in the conventional way, and doctors will use a tearable guiding cannula, which needs to be torn to be removed. This structural design costs more material costs and is also more troublesome for doctors to operate. Therefore, we propose a central venous catheter adapter. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art. In the case of using a multi-channel central venous catheter, due to the existence of an adapter, the guiding cannula cannot be withdrawn in the conventional way, and doctors will use a tearable guiding cannula, which needs to be torn to be removed. This structural design costs more material costs and is also more troublesome for doctors to operate.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A central venous catheter adapter, including a connecting mechanism, a venous catheter is arranged on the front surface of the connecting mechanism, and a guiding cannula is sleeved on the periphery of the venous catheter;
[0007] The connecting mechanism includes a connecting block, a liquid outlet is opened at one end of the connecting block close to the front surface, a connecting piece is sleeved on the periphery of the liquid outlet, a plurality of channels are equidistantly opened in the connecting block from left to right, a plurality of infusion tubes are installed corresponding to the channels at one end of the connecting block close to the back surface, an internal groove is opened at the top of the channels in the connecting block, an inserting block is arranged at the top of the connecting block extending into the channels, and a fixing block is arranged at one end of the inserting block away from the channels.
[0008] As a preferred scheme of the utility model, threads are engraved on the periphery of one end of the venous catheter close to the connecting mechanism, and the venous catheter is slidably connected with the guiding cannula.
[0009] The technical effect of adopting the above further solution is that through the sliding connection between the venous catheter and the guiding cannula, the guiding sleeve can be slid out from the periphery of the venous catheter after use, improving the convenience of use.
[0010] As a preferred solution of the present utility model, a first sealing ring is arranged inside one end of the connecting piece close to the connecting block, the first sealing ring is bonded to the connecting piece, and the connecting piece is fixed to the liquid outlet through threads.
[0011] The technical effect of adopting the above further solution is that the first sealing ring can seal the contact part between the connecting piece and the liquid outlet to prevent liquid from overflowing, and the threaded connection between the connecting piece and the liquid outlet can fix the two.
[0012] As a preferred solution of the present utility model, a second sealing ring is arranged inside one end of the connecting piece close to the venous catheter, the second sealing ring is bonded to the connecting piece, and the venous catheter is fixed to the connecting piece through threads.
[0013] The technical effect of adopting the above further solution is that the second sealing ring can seal the contact part between the connecting piece and the venous catheter to prevent liquid from overflowing, the threaded connection between the venous catheter and the connecting piece can fix the two, and after use, the two can be separated to facilitate the removal of the guiding cannula.
[0014] As a preferred solution of the present utility model, the infusion tube is connected to an external infusion device and is also connected to the channel.
[0015] The technical effect of adopting the above further solution is that the external infusion device can input liquid into the channel through the infusion tube for intravenous treatment.
[0016] As a preferred solution of the present utility model, the insertion block and the connecting block are of a pull-out structure, and the insertion block is adapted to the channel.
[0017] The technical effect of adopting the above further solution is that during use, when the liquid delivery of one of the connected channels is completed, the corresponding insertion block can be pressed to cut off the channel and prevent the liquid from the remaining channels from flowing into the channel where the delivery is completed, improving the use stability.
[0018] As a preferred solution of the present utility model, limit blocks are arranged inside the front and back surfaces of the insertion block and in the built-in groove, and the limit blocks are fixedly connected to the insertion block.
[0019] The technical effect of adopting the above further solution is that through the fixed connection between the limit block and the insertion block, the insertion block can be limited to prevent excessive pulling and causing the insertion block to be pulled out, improving the use stability.
[0020] As a preferred solution of the present utility model, the fixed block is fixedly connected to the insertion block, and a threaded rod is disposed through the front surface of the fixed block, and the threaded rod is adapted to the fixed block.
[0021] The technical effect of adopting the above further solution is that: through the fixed connection between the fixed block and the insertion block, the connection between the two can be made more firm, preventing the threaded rod from loosening and falling off, and improving the use stability.
[0022] As a preferred solution of the present utility model, a fixed seat is provided at the top of the connection block and on the back of the fixed block. Threaded ports are symmetrically opened on the front surface of the fixed seat corresponding to the top and bottom of the threaded rod, and the threaded rod is adapted to the threaded ports.
[0023] The technical effect of adopting the above further solution is that: through the adaptation between the threaded rod and the threaded ports, after the insertion block moves to a suitable position, the threaded rod can be rotated to screw it into the threaded ports to complete the fixation of the position of the insertion block, preventing the insertion block from loosening during use and improving the use stability.
[0024] As a preferred solution of the present utility model, the connection block, the liquid outlet, the connecting member, the channel are connected to the venous catheter.
[0025] The technical effect of adopting the above further solution is that: the liquid flows into the connection block through the channel, flows through the connecting member through the liquid outlet, and enters the venous catheter for intravenous treatment.
[0026] Compared with the prior art, the beneficial effects of the present utility model are:
[0027] In the present utility model, through the design of the connection mechanism, the venous catheter and the guiding cannula, by the combined use of the connection block, the liquid outlet, the connecting member and the venous catheter, after use, the connecting member can be rotated to separate it from the venous catheter, so as to facilitate the user to pull out the guiding cannula, greatly improving the operation convenience and effectively reducing the material cost. Through the use of the connection block, the insertion block, the limiting block, the threaded rod and the threaded ports, after one of the infusion tubes finishes infusion, the corresponding insertion block can be pressed to cut off the channel, preventing the liquid in the remaining channels from flowing into the channel that has completed the delivery and causing backflow, effectively improving the use stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of the central venous catheter adapter provided by the present utility model;
[0029] Figure 2 It is a schematic diagram of the overall unfolded structure of the central venous catheter adapter provided by the present utility model;
[0030] Figure 3Anatomical diagram of the overall top structure of the central venous catheter connector provided by the present utility model;
[0031] Figure 4 Anatomical diagram of the side structure of the connection block of the central venous catheter connector provided by the present utility model.
[0032] Legend: 1. Connection mechanism; 101. Connection block; 102. Liquid outlet; 103. Connector; 1031. First sealing ring; 1032. Second sealing ring; 104. Channel; 105. Infusion tube; 106. Built-in groove; 107. Insert block; 1071. Limit block; 108. Fixed block; 1081. Threaded rod; 109. Fixed seat; 1091. Threaded port; 2. Venous catheter; 3. Guide cannula. Detailed implementation manners
[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0034] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the present utility model are given. However, the present utility model 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 utility model more thorough and comprehensive.
[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0037] Embodiment 1
[0038] As Figures 1-4As shown in the figure, the present utility model provides a technical solution: a central venous catheter connector, including a connection mechanism 1. A venous catheter 2 is arranged on the front surface of the connection mechanism 1. A guiding sleeve 3 is sleeved outside the venous catheter 2. The connection mechanism 1 includes a connection block 101. A liquid outlet 102 is opened at one end of the connection block 101 close to the front surface. A connecting piece 103 is sleeved outside the liquid outlet 102. A plurality of channels 104 are equidistantly opened in the connection block 101 from left to right. A plurality of infusion tubes 105 are installed corresponding to the channels 104 at one end of the connection block 101 close to the back surface. An internal groove 106 is opened at the top of the channels 104 inside the connection block 101. An insertion block 107 is arranged inside the connection block 101 and extends to the inside of the channels 104. A fixing block 108 is arranged at one end of the insertion block 107 away from the channels 104.
[0039] Embodiment 2
[0040] As Figures 1-4As shown, threads are engraved on the periphery of one end of the venous catheter 2 close to the connecting mechanism 1. The venous catheter 2 is slidably connected to the guiding cannula 3. Through the sliding connection between the venous catheter 2 and the guiding cannula 3, the guiding sleeve 3 can be slid out from the periphery of the venous catheter 2 after use, improving the convenience of use. A first sealing ring 1031 is arranged inside one end of the connecting piece 103 close to the connecting block 101. The first sealing ring 1031 is bonded to the connecting piece 103. The connecting piece 103 is fixed to the liquid outlet 102 by threads. Through the first sealing ring 1031, the contact part between the connecting piece 103 and the liquid outlet 102 can be sealed to prevent liquid leakage. Through the threaded connection between the connecting piece 103 and the liquid outlet 102, the two can be fixed. A second sealing ring 1032 is arranged inside one end of the connecting piece 103 close to the venous catheter 2. The second sealing ring 1032 is bonded to the connecting piece 103. The venous catheter 2 is fixed to the connecting piece 103 by threads. Through the second sealing ring 1032, the contact part between the connecting piece 103 and the venous catheter 2 can be sealed to prevent liquid leakage. Through the threaded connection between the venous catheter 2 and the connecting piece 103, the two can be fixed. At the same time, after use, the two can be separated to facilitate the removal of the guiding cannula 3. The infusion tube 105 is connected to an external infusion device. The infusion tube 105 is connected to the channel 104. The external infusion device can input liquid into the channel 104 through the infusion tube 105 for intravenous treatment. The insertion block 107 and the connecting block 101 are of a pull-out structure. The insertion block 107 is adapted to the channel 104. During use, when the liquid delivery of one of the connected channels 104 is completed, the corresponding insertion block 107 can be pressed to cut off the channel 104 to prevent the liquid in the remaining channels 104 from flowing into the channel 104 where the delivery is completed, improving the use stability. Limit blocks 1071 are arranged on the front and back of the insertion block 107 and inside the built-in groove 106. The limit blocks 1071 are fixedly connected to the insertion block 107. Through the fixed connection between the limit blocks 1071 and the insertion block 107, the insertion block 107 can be limited to prevent excessive pulling and causing the insertion block 107 to be pulled out, improving the use stability. The fixing block 108 is fixedly connected to the insertion block 107. A threaded rod 1081 is arranged through the front of the fixing block 108. The threaded rod 1081 is adapted to the fixing block 108. Through the fixed connection between the fixing block 108 and the insertion block 107, the connection between the two can be made more firm, preventing the threaded rod 1081 from loosening and falling off, improving the high use stability. A fixing seat 109 is arranged on the top of the connecting block 101 and on the back of the fixing block 108. Threaded openings 1091 are symmetrically arranged on the front of the fixing seat 109 corresponding to the top and bottom of the threaded rod 1081. The threaded rod 1081 and the threaded openings 1091 are adapted. Through the adaptation between the threaded rod 1081 and the threaded openings 1091, after the insertion block 107 moves to a suitable position, the threaded rod 1081 can be rotated to make it screw into the threaded openings 1091.The fixing of the position of the insertion block 107 is completed to prevent the insertion block 107 from loosening during use and improve the use stability. The connecting block 101, the liquid outlet 102, the connecting piece 103, the channel 104 are connected to the venous catheter 2. The liquid flows into the inside of the connecting block 101 through the channel 104, and then flows through the connecting piece 103 through the liquid outlet 102 and enters the inside of the venous catheter 2 for venous treatment.
[0041] The working process of the present utility model: When the guide sleeve 3 is to be removed after the treatment of the central venous catheter 2 through the channel 104 for the connector of the central venous catheter 2, first rotate the connecting piece 103 to separate it from the venous catheter 2 through the thread. Then slowly pull out the guide sleeve 3 so that it slides out through the threaded end of the venous catheter 2 to complete the removal operation of the guide sleeve 3. After that, fix the venous catheter 2 and the connecting piece 103 again. During the treatment process, the external infusion device injects the liquid into the inside of the channel 104 through the infusion tube 105, flows through the connecting block 101, the liquid outlet 102 and the connecting piece 103 and enters the venous catheter 2 for venous treatment. When after using for a period of time, after the liquid output inside one of the infusion tubes 105 is completed, press the insertion block 107 above the corresponding channel 104 to cut off the channel 104, and rotate the threaded rod 1081 to screw it into the threaded port 1091 to complete the fixing of the insertion block 107, which can prevent the liquid in the remaining channels 104 from flowing into the channel 104 with the completed delivery and cause backflow, effectively improving the use stability.
[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A central venous catheter connector, comprising a connecting mechanism (1), characterized in that: A venous catheter (2) is arranged on the front of the connecting mechanism (1), and a guide sleeve (3) is arranged on the periphery of the venous catheter (2); The connection mechanism (1) comprises a connection block (101); a liquid outlet (102) is provided at one end of the connection block (101) close to the front; a connection piece (103) is sleeved around the outer periphery of the liquid outlet (102); a plurality of channels (104) are provided in the connection block (101) at equal intervals from left to right; a plurality of infusion tubes (105) are installed at one end of the connection block (101) close to the back corresponding to the channels (104); a built-in groove (106) is provided in the connection block (101) and at the top of the channels (104); an insert block (107) is provided at the top of the connection block (101) extending to the inside of the channels (104); and a fixing block (108) is provided at one end of the insert block (107) away from the channels (104).
2. The central venous catheter connector according to claim 1, characterized in that: The periphery of the intravenous catheter (2) close to one end of the connecting mechanism (1) is engraved with a thread, and the intravenous catheter (2) is slidably connected to the guide sleeve (3).
3. The central venous catheter connector according to claim 1, characterized in that: A first sealing ring (1031) is provided inside one end of the connecting member (103) close to the connecting block (101); the first sealing ring (1031) is bonded to the connecting member (103); and the connecting member (103) is fixed to the liquid outlet (102) via a thread.
4. The central venous catheter connector according to claim 1, characterized in that: A second sealing ring (1032) is provided inside the connecting piece (103) near one end of the intravenous catheter (2); the second sealing ring (1032) is bonded to the connecting piece (103); and the intravenous catheter (2) is fixed to the connecting piece (103) via threads.
5. The central venous catheter connector according to claim 1, characterized in that: The infusion tube (105) is connected to an external infusion device, and the infusion tube (105) is connected to the channel (104).
6. The central venous catheter connector according to claim 1, characterized in that: The insert block (107) and the connection block (101) are of a pull-out structure, and the insert block (107) is adapted to the channel (104).
7. The central venous catheter connector according to claim 1, characterized in that: Limiting blocks (1071) are arranged on the front and back sides of the inserting block (107) and inside the built-in groove (106); the limiting blocks (1071) are fixedly connected to the inserting block (107).
8. The central venous catheter connector according to claim 1, characterized in that: The fixing block (108) is fixedly connected to the insert block (107); a threaded rod (1081) is provided through the front surface of the fixing block (108); and the threaded rod (1081) is adapted to the fixing block (108).
9. The central venous catheter connector according to claim 1, characterized in that: A fixing seat (109) is provided at the top of the connecting block (101) and at the back of the fixing block (108); a front side of the fixing seat (109) is symmetrically provided with threaded openings (1091) corresponding to the threaded rod (1081) near the top and the bottom; the threaded rod (1081) and the threaded openings (1091) are matched.
10. The central venous catheter connector according to claim 1, characterized in that: The connection block (101), the liquid outlet (102), the connection piece (103), the channel (104), and the venous catheter (2) are connected.