Positive pressure joint cap

Abstract

The utility model provides a positive pressure connector cap which comprises a connector body, one end of the connector body is used for being communicated with an indwelling tube, and the connector body is arranged as a liquid inlet end; one end of the connector body is provided with a liquid inlet end, the other end of the connector body is used for transfusion, the connector body is provided with a transfusion end, the transfusion end is provided with an external thread, the side, close to the liquid inlet end, of the connector body is sleeved with a mounting lantern ring, the mounting lantern ring is provided with a connecting piece, and the side, away from the mounting lantern ring, of the connecting piece is provided with a connecting sleeve which is hollow and penetrates through the connecting sleeve; a sealing piece is rotatably arranged in the connecting sleeve, a threaded sleeve is arranged on the sealing piece, internal threads matched with the external threads on the infusion end are arranged on the inner wall of the threaded sleeve, one end of the sealing piece extends out of the connecting sleeve, and the other end of the sealing piece is used for being connected with an opening of the infusion end in an abutting mode to seal the opening of the infusion end. Microorganisms such as bacteria can be prevented from entering blood vessels to a certain extent, and the risk of catheter-related infection of a patient is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a positive pressure connector cap. Background Art

[0002] The contents in this section merely provide background information related to the present invention and may not constitute prior art.

[0003] According to the industry standard for intravenous infusion, needle-free infusion devices are currently being promoted. In clinical practice, steel needles are basically no longer used to puncture heparin caps to connect infusion sets. Instead, positive pressure connector caps are used instead of heparin caps to connect infusion sets. However, with the widespread use of positive pressure connector caps, new problems have also emerged. According to records, 40% of the pathogens that cause catheter-related infections come from catheter connectors. In clinical practice, the service life of positive pressure connector caps is to accompany intravenous catheters and to be replaced together with intravenous catheters. A positive pressure connector cap infusion port is used an average of 4-6 times a day. Intravenous infusion requires replacement of the cannula needle every 72-96 hours, so the service life of a positive pressure connector cap is also 72-96 hours. The infusion port of a positive pressure connector cap is recycled an average of 12-18 times. This repeated connection makes the gap between the silicone valve and the outer shell of the positive pressure connector cap larger and larger, and bacteria can easily enter the intravenous catheter through the gap.

[0004] At present, there is no corresponding protection device on the infusion port of the positive pressure connector cap in clinical practice. After the infusion is completed, it is directly exposed to the environment. Bacteria, microorganisms, dust particles, etc. are particularly easy to enter the positive pressure connector cap through the gap between the silicone valve and the outer shell. Each time the infusion is performed, only the outer surface of the positive pressure connector cap is disinfected, but the inside cannot be disinfected. During the next infusion, bacteria and other microorganisms will enter the blood vessels along the infusion pathway, causing catheter-related infection. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the present application is to provide a positive pressure connector cap that can prevent bacteria and other microorganisms from entering the blood vessels to a certain extent, thereby reducing the risk of catheter-related infection in patients.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] A positive pressure joint cap comprises a joint body, one end of which is used to communicate with an indwelling tube and is arranged as a liquid inlet end; the other end is used for infusion and is arranged as an infusion end, an external thread is provided on the infusion end, a mounting collar is provided on a side of the joint body close to the liquid inlet end, a connecting piece is provided on the mounting collar, a connecting sleeve is provided on a side of the connecting piece away from the mounting collar, the connecting sleeve is hollow and is arranged through, a sealing piece is rotatably arranged inside the connecting sleeve, a threaded sleeve is fixedly arranged on the sealing piece, an internal thread matched with the external thread on the infusion end is provided on the inner wall of the threaded sleeve, one end of the sealing piece extends out of the connecting sleeve, and the other end is used to abut against the opening of the infusion end to close the opening of the infusion end.

[0008] In some possible embodiments, a disinfection sheet is provided on one side of the seal close to the infusion end, one side of the disinfection sheet abuts against one end of the seal close to the infusion end, and the other side is used to abut against the opening of the infusion end.

[0009] In some possible embodiments, anti-slip vertical lines are provided on a side of the seal away from the joint body.

[0010] In some possible embodiments, an annular groove is opened on the inner wall of the connecting sleeve along the circumference of the connecting sleeve, and an annular block is fixedly arranged on the outer wall of the sealing member. The annular block is slidably arranged in the annular groove, and a sliding layer is arranged on the surface of the annular block. The sliding layer is used for sliding connection with the inner wall of the annular groove.

[0011] In some possible embodiments, a sealing ring is provided on the inner wall of the lower edge of the connecting sleeve, the inner wall of the sealing ring is used to abut against the outer wall of the joint body, and the material of the sealing ring is set to be silicone rubber.

[0012] In some possible embodiments, a connecting ring is provided on the side of the connecting sleeve close to the infusion end, a slot is opened along the axis of the connecting sleeve on the side of the connecting sleeve close to the infusion end, an insert block is provided on the top of the connecting ring, the insert block is slidably inserted in the slot, and the sealing ring is provided on the inner wall of the connecting ring along the circumference of the connecting ring.

[0013] In some possible embodiments, the connecting member is detachably connected to the mounting collar, and a limiting member is provided on the connecting member, wherein the limiting member is used to limit the position of the connecting member on the mounting collar.

[0014] In some possible embodiments, the limiting member is configured as a limiting block, and a limiting groove is provided on the limiting member, the limiting groove is used for the installation ring to be inserted, a first limiting protrusion is provided on the inner wall of the limiting groove, and a second limiting protrusion adapted to the first limiting protrusion is provided on the installation ring, when the installation ring is inserted into the limiting groove, the side of the first limiting protrusion away from the joint body abuts against the side of the second limiting protrusion close to the joint body.

[0015] In some possible embodiments, a paddle is provided on the top and / or bottom of the limiting member, and an anti-slip sticker is covered on the paddle.

[0016] In summary, the technical solution of the embodiment of the present application has at least the following advantages and beneficial effects:

[0017] 1. In actual use, the installation ring is installed on the connector body. After each infusion of the patient, when the opening of the infusion end needs to be closed, the seal is driven to move through the connecting sleeve, and the seal is installed to the infusion end of the connector body through the threaded sleeve, and the opening of the infusion end is closed by the seal, thereby effectively preventing bacteria and other microorganisms from entering the blood vessels, thereby reducing the risk of catheter-related infection in patients;

[0018] 2. By arranging a disinfection sheet in the seal, the opening of the infusion end can be sterilized and disinfected after the opening of the infusion end is sealed, which can further prevent bacteria and other microorganisms from entering the blood vessels and further reduce the risk of catheter-related infection in patients;

[0019] 3. By providing anti-slip vertical lines on the seal, the friction between the user's hand and the seal is improved to a certain extent, thereby facilitating the user to rotate the seal, facilitating operation, and improving the overall practicality of the device;

[0020] 4. By setting a sealing ring to further seal the gap between the outer wall of the connector body and the connecting sleeve, the risk of external bacteria, microorganisms, dust particles, etc. contaminating the opening of the infusion end can be further reduced, further reducing the risk of infection for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of a cross-sectional exploded structure of an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the exploded structure of the connecting ring of an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the limiter in an embodiment of the present application;

[0025] Figure 5 for Figure 4 Enlarged view of part A in .

[0026] Icons: 1. Connector body; 11. Liquid inlet end; 12. External thread; 13. Infusion end; 2. Mounting ring; 21. Connector; 22. Connecting sleeve; 3. Sealing member; 31. Threaded sleeve; 32. Internal thread; 33. Disinfection sheet; 34. Anti-slip vertical lines; 4. Annular groove; 41. Annular block; 5. Connecting ring; 51. Slot; 52. Insert block; 53. Sealing ring; 6. Limiting member; 61. Limiting groove; 62. First limiting protrusion; 63. Second limiting protrusion; 64. Pick. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] The following reference Figures 1 to 5 This application is described in further detail.

[0029] Reference Figure 1 , 2 A positive pressure connector cap comprises a connector body 1, one end of which is used to communicate with an indwelling tube and is set as a liquid inlet end 11. The other end is used for infusion and is set as an infusion end 13. An external thread 12 is provided on the infusion end 13. A mounting collar 2 is sleeved on the side of the connector body 1 close to the liquid inlet end 11, a connector 21 is provided on the mounting collar 2, a connecting sleeve 22 is provided on the side of the connecting member 21 away from the mounting collar 2, the connecting sleeve 22 is hollow and penetrated, a sealing member 3 is rotatably provided inside the connecting sleeve 22, a threaded sleeve 31 is fixedly provided on the sealing member 3, an internal thread 32 matched with the external thread 12 on the infusion end 13 is provided on the inner wall of the threaded sleeve 31, one end of the sealing member 3 extends out of the connecting sleeve 22, and the other end is used to abut against the opening of the infusion end 13, so as to close the opening of the infusion end 13 after each infusion of the patient is completed.

[0030] As an embodiment of the present application, the infusion end 13 is configured as a female Luer connector, and the liquid inlet end 11 is configured as a male Luer connector. The male Luer connector is used to connect to a catheter (i.e., an indwelling needle or indwelling tube), and the female Luer connector is used to connect to a drug delivery device such as an infusion set or a syringe.

[0031] In addition, refer to Figure 1 , 2The shape of the mounting collar 2 is set to be an ellipse, and a mounting hole compatible with the liquid inlet end 11 of the connector body 1 is opened in the middle of the mounting collar 2. As one embodiment of the present application, a fixed connection method can be adopted between the mounting collar 2 and the connector body 1. In the actual production process, the mounting collar 2 and the connector body 1 can be placed in the same sterile package; as another embodiment of the present application, a split connection method can be adopted between the mounting collar 2 and the connector body 1. In the actual production process, the mounting collar and the connector body can be placed in one sterile package, or they can be placed in two sterile packages respectively.

[0032] Among them, refer to Figure 2 A disinfection sheet 33 is provided at one end of the seal 3 near the infusion end 13, one side of the disinfection sheet 33 abuts against the end of the seal 3 near the infusion end 13, and the other side is used to abut against the opening of the infusion end 13. As an embodiment of the present application, the disinfection sheet 33 can be an alcohol sponge. Before actual use, the sponge sheet is soaked in medical alcohol and then placed in the seal 3 with tweezers. During actual use, the alcohol sponge can disinfect the opening of the infusion end 13.

[0033] Reference Figure 1 , 2 , a side of the seal 3 away from the joint body 1 is provided with anti-skid vertical lines 34. A plurality of anti-skid vertical lines 34 are provided along the circumference of the seal 3. The anti-skid vertical lines 34 can effectively increase the friction between the hand and the seal 3 during the rotation of the seal 3, thereby making it more convenient for the user to drive the seal 3 to rotate, and improving the overall practicality of the device to a certain extent.

[0034] Among them, refer to Figure 2 An annular groove 4 is provided on the inner wall of the connecting sleeve 22 along the circumference of the connecting sleeve 22, and an annular block 41 is fixedly provided on the outer wall of the sealing member 3. The annular block 41 is slidably provided in the annular groove 4. A sliding layer is provided on the surface of the annular block 41, and the sliding layer is used for sliding connection with the inner wall of the annular groove 4.

[0035] As an implementation method of this application, refer to Figure 2 The annular groove 4 is set as a T-shaped groove, and the annular block 41 is correspondingly set as a T-shaped block; as another embodiment of the present application, the annular groove 4 can also be set as an ordinary rectangular groove or a dovetail groove, and the annular block 41 is correspondingly set as a rectangular block or a dovetail block.

[0036] In addition, as an embodiment of the present application, the material of the sliding layer is set to polytetrafluoroethylene, commonly known as Teflon. By setting the sliding layer, the friction between the annular block 41 and the inner wall of the annular groove 4 can be effectively reduced, thereby facilitating the user to drive the seal 3 to move on the connecting sleeve 22 to a certain extent.

[0037] Among them, refer to Figure 3 A connecting ring 5 is provided on the side of the connecting sleeve 22 close to the infusion end 13, a slot 51 is provided along the axis of the connecting sleeve 22 on the side of the connecting sleeve 22 close to the infusion end 13, an insert block 52 is provided on the top of the connecting ring 5, the insert block 52 can be slidably inserted in the slot 51, a sealing ring 53 is provided in the connecting ring 5, and the sealing ring 53 is provided on the inner wall of the connecting ring 5 along the circumference of the connecting ring 5. The inner wall of the sealing ring 53 is used to abut against the outer wall of the connector body 1, and the material of the sealing ring 53 is set to be silicone rubber.

[0038] By providing a sealing ring 53, the gap between the outer wall of the connector body 1 and the connecting sleeve 22 is further sealed, which can further reduce the risk of external bacteria, microorganisms, dust particles, etc. contaminating the opening of the liquid inlet end 11, and further reduce the risk of infection for patients. At the same time, the connection ring 5 and the connecting sleeve 22 are provided with a detachable connection, which is also convenient for the staff to replace the connection ring 5. With the increase in the number of uses, the sealing ring 53 on the connection ring 5 is bound to age and be damaged, thereby reducing the sealing effect to a certain extent. At this time, replacing the connection ring 5 or the sealing ring 53 can effectively ensure the sealing effect of the entire device during actual use.

[0039] Reference Figure 2 , 4 The connecting member 21 is detachably connected to the mounting collar 2 , and a limiting member 6 is provided on the connecting member 21 , and the limiting member 6 is used to limit the position of the connecting member 21 on the mounting collar 2 .

[0040] As an implementation method of this application, refer to Figure 2 and Figure 4 The limiting member 6 is configured as a limiting block, and a limiting groove 61 is provided on the limiting member 6. The limiting groove 61 is used for the installation ring 2 to be inserted into. A first limiting protrusion 62 is provided on the inner wall of the limiting groove 61, and a second limiting protrusion 63 adapted to the first limiting protrusion 62 is provided on the installation ring 2. When the installation ring 2 is inserted into the limiting groove 61, the side of the first limiting protrusion 62 away from the joint body 1 abuts against the side of the second limiting protrusion 63 close to the joint body 1.

[0041] Among them, refer to Figure 4 and Figure 5 The first limiting protrusion 62 is inclined near the side wall of the joint body 1, and the second limiting protrusion 63 is also inclined away from the side wall of the joint body 1. The inclination angles of the two are adapted to each other, so that the clamping installation can be facilitated to a certain extent.

[0042] Reference Figure 4A paddle 64 is also provided at the top and / or bottom of the stopper 6, and an anti-slip sticker is provided on the paddle 64. The material of the stopper block is set to be a hard plastic material, and can produce elastic deformation within a certain range. When the connector 21 needs to be removed from the mounting collar 2, the paddle 64 is moved to drive the upper or lower part of the stopper block to produce elastic deformation, and the first stopper protrusion 62 is separated from the second stopper protrusion 63. At this time, the connector 21 can be driven to be separated from the mounting collar 2 more conveniently.

[0043] The implementation principle of a positive pressure joint cap proposed in the embodiment of the present application is:

[0044] In actual use, the installation ring 2 is first sleeved on the liquid inlet end 11 of the connector body 1. When the patient completes each infusion and needs to close the opening of the infusion end 13, first place a disinfectant sponge soaked in alcohol or other disinfectant in the seal 3, and then insert the connecting sleeve 22 from the infusion end 13 of the connector body 1. When the seal 3 is connected to the external thread 12 on the connector body 1, the seal 3 is driven to rotate on the connecting sleeve 22. As the seal 3 rotates, under the action of the internal and external threads that engage with each other, the seal 3 moves toward the infusion end 13 of the connector body 1, and finally drives the disinfectant sponge to abut against the opening of the infusion end 13. At this time, the opening of the infusion end 13 of the connector body 1 is closed, thereby preventing bacteria and other microorganisms from entering the blood vessels to a certain extent, and effectively reducing the risk of catheter-related infection in patients.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positive pressure joint cap, comprising a joint body, one end of which is used to communicate with an indwelling tube and is set as a liquid inlet end; the other end is used for infusion and is set as an infusion end, and an external thread is provided on the infusion end, characterized in that: A mounting collar is sleeved on one side of the connector body close to the liquid inlet end, a connector is arranged on the mounting collar, a connecting piece is arranged on the side of the connecting piece away from the mounting collar, the connecting sleeve is hollow and penetrated, a sealing piece is rotatably arranged inside the connecting sleeve, a threaded sleeve is fixedly arranged on the sealing piece, an internal thread matched with the external thread on the infusion end is provided on the inner wall of the threaded sleeve, one end of the sealing piece extends out of the connecting sleeve, and the other end is used to abut against the opening of the infusion end to close the opening of the infusion end.

2. A positive pressure joint cap according to claim 1, characterized in that: A disinfection sheet is arranged on one side of the sealing member close to the infusion end, one side of the disinfection sheet abuts against one end of the sealing member close to the infusion end, and the other side is used to abut against the opening of the infusion end.

3. A positive pressure joint cap according to claim 1, characterized in that: Anti-slip vertical stripes are arranged on a side of the sealing member away from the joint body.

4. The positive pressure joint cap according to claim 1, characterized in that: An annular groove is provided on the inner wall of the connecting sleeve along the circumference of the connecting sleeve, and an annular block is fixedly provided on the outer wall of the sealing member. The annular block is slidably provided in the annular groove, and a sliding layer is provided on the surface of the annular block. The sliding layer is used for sliding connection with the inner wall of the annular groove.

5. The positive pressure joint cap according to claim 1, characterized in that: A sealing ring is arranged on the inner wall of the lower edge of the connecting sleeve, and the inner wall of the sealing ring is used to abut against the outer wall of the joint body.

6. A positive pressure joint cap according to claim 5, characterized in that: A connecting ring is arranged on the side of the connecting sleeve close to the infusion end, a slot is opened along the axis of the connecting sleeve on the side of the connecting sleeve close to the infusion end, an insert block is arranged on the top of the connecting ring, the insert block is slidably inserted in the slot, and the sealing ring is arranged on the inner wall of the connecting ring along the circumference of the connecting ring.

7. The positive pressure joint cap according to claim 1, characterized in that: The connecting piece is detachably connected to the mounting collar, and a limiting piece is arranged on the connecting piece, and the limiting piece is used to limit the position of the connecting piece on the mounting collar.

8. The positive pressure joint cap according to claim 7, characterized in that: The limiting member is configured as a limiting block, and a limiting groove is provided on the limiting member. The limiting groove is used for the installation ring to be inserted into. A first limiting protrusion is provided on the inner wall of the limiting groove, and a second limiting protrusion matched with the first limiting protrusion is provided on the installation ring. When the installation ring is inserted into the limiting groove, the side of the first limiting protrusion away from the joint body abuts against the side of the second limiting protrusion close to the joint body.

9. A positive pressure joint cap according to claim 8, characterized in that: A paddle is arranged on the top and / or bottom of the limiting member, and an anti-slip sticker is covered on the paddle.

Images