Subcutaneous negative pressure drainage device
Through the subcutaneous negative pressure drainage device with a dual-tube structure, the problem of drainage tube is solved, safe discharge of effusion is achieved, the patient's pain and infection risk are reduced, and the drainage reliability is improved.
Patent Information
- Application Number
- CN202510982777.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-08-12
AI Technical Summary
When the existing subcutaneous negative pressure drainage device is not turned on, the accumulation of fluid is prone to condense and blockage in the drainage tube, resulting in secondary injury and infection risks.
The double-tube structure is adopted, including the main drainage tube and the sub-draining tube. The main drainage tube is equipped with a sealing cavity and a sliding chute in the sub-draining tube. The sliding device is connected to the main drainage lower tube to achieve the discharge of fluid in the sub-draining tube that is not easily blocked, and avoid impact on the wound.
Effectively prevent drainage tube blockage, reduce patient pain, reduce secondary injury and infection risks, and improve the reliability and safety of drainage.
Smart Images
Figure CN120459409A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a drainage device, and in particular to a subcutaneous negative pressure drainage device used in medical treatment. Background Art
[0002] Surgical drainage is the process of directing pus, blood, and fluid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infection and affect wound healing.
[0003] Therefore, in order to solve the above technical problems, the existing technology adopts the method of connecting the outlet end of a single drainage tube to a negative pressure device for negative pressure drainage. Since most of the existing negative pressure drainage devices are non-continuous sealing devices, it is impossible to open the negative pressure device for drainage 24 hours a day during use. Therefore, when the negative pressure device is not turned on, the accumulated fluid, blood, etc. entering the drainage tube are easily attached to the inner wall of the drainage tube and gradually accumulate. After a certain period of time, it is very easy to condense and solidify in the drainage tube, especially at the liquid inlet end of the drainage tube. The solidified accumulated fluid will cause blockage. Since there is only one drainage tube, the drainage tube must be pressurized and flushed or replaced as soon as it is blocked, which will cause unnecessary secondary damage to the patient. In particular, pressurized flushing will cause the solidified accumulated fluid to return to the wound. The solidified accumulated fluid cannot dissipate in a short time. Not only may it flow back to the drainage tube and cause blockage again, it is also easy to increase the risk of secondary infection of the wound. Summary of the Invention
[0004] The present application provides a subcutaneous negative pressure drainage device with a main tube and a secondary tube, which is not prone to clot formation in the drainage tube and is not prone to blockage. Even if there is blockage, it can reduce the patient's pain during the backwash process.
[0005] The purpose of the present application is achieved as follows: a subcutaneous negative pressure drainage tube includes a secondary drainage tube with a secondary drainage head, at least one main drainage upper tube is arranged in the secondary drainage tube, the lower part of the main drainage upper tube is located in the secondary drainage tube and is equipped with a lower joint, the upper part of the main drainage upper tube is located outside the secondary drainage tube and is equipped with a main drainage head; a sealed cavity corresponding to the main drainage upper tube is provided in the secondary drainage tube, the upper part of the main drainage lower tube passes through and out of the sealed cavity, and the upper end of the passing part is equipped with an upper joint matching the lower joint; a slide groove is opened on the outer wall of the secondary drainage tube corresponding to the sealed cavity, and a sliding device is provided on the slide groove, and the sliding device is connected to the main drainage lower tube located in the sealed cavity.
[0006] Opposite openings are provided on the upper and lower end surfaces of the sealing cavity, and sealing rings are provided in both openings. The cavity sliding sleeve is inserted into the sealing ring at the lower opening and passes through the sealing ring at the upper opening. The sliding sleeve is wrapped around the outside of the main drainage lower tube located in the sealing cavity and is fixedly connected to the main drainage lower tube.
[0007] The sliding device comprises a sliding rail arranged on the side of the sliding groove, a sliding block is slidably connected to the sliding rail, a connecting rod is arranged on the sliding block, and the inner end of the connecting rod is fixedly connected to the sliding sleeve.
[0008] The lower joint is fixedly connected to the inner wall of the auxiliary drainage tube.
[0009] An auxiliary drainage tube extends from the lower part of the main drainage lower tube and is connected with the negative pressure device, and a main flow limiting device is arranged on the lower part of the main drainage lower tube.
[0010] A secondary flow limiting device is installed at the lower part of the secondary drainage pipe.
[0011] The present application sets at least one main drainage upper tube and a corresponding main drainage lower tube, and when negative pressure drainage is not required, the accumulated fluid is guided to a thicker, less clogged auxiliary drainage tube for drainage, so that even if the accumulated fluid, blood, etc. adhere to the tube wall of the auxiliary drainage tube, it is difficult to clog the auxiliary drainage tube. During the backwashing process after the main drainage lower tube is blocked, the pressure and clots directly enter the auxiliary drainage tube, which will not cause impact on the wound, thereby alleviating the patient's pain and preventing the clots from entering the wound and causing infection. After the main drainage upper tube is blocked, the accumulated fluid can be directly guided to drain from another unobstructed main drainage upper tube. The present application can not only effectively prevent the blockage of the drainage tube, but also effectively prevent secondary damage to the patient caused by the blockage of the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The specific structure of this application is given by the following drawings and examples: Attachment Figure 1 It is a schematic diagram of the structure of this application; Attachment Figure 2 It is a structural diagram of the sliding device.
[0013] Legend: 1. Auxiliary drainage head, 2. Main drainage head, 3. Main drainage upper tube, 4. Lower joint, 5. Upper joint, 6. Sliding device, 6-1. Slide rail, 6-2. Connecting rod, 6-3. Slider, 7. Main drainage lower tube, 8. Main flow limiting device, 9. Auxiliary drainage tube, 10. Auxiliary flow limiting device, 11. Sleeve, 12. Sealing chamber. DETAILED DESCRIPTION
[0014] The present application is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of the present application and actual conditions.
[0015] In the present invention, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 For example, the positional relationships of top, bottom, left, and right are based on the layout of the instructions. Figure 1 The layout direction is determined by the
[0016] The present invention will be explained below with reference to the accompanying drawings and embodiments: Figure 1-2 As shown, the subcutaneous negative pressure drainage device includes a secondary drainage tube 9 with a secondary drainage head 1, and at least one main drainage upper tube 3 is arranged in the secondary drainage tube 9. The lower part of the main drainage upper tube 3 is located in the secondary drainage tube 9 and is equipped with a lower joint 4, and the upper part of the main drainage upper tube 3 is located outside the secondary drainage tube 9 and is equipped with a main drainage head 2; a sealed cavity 12 corresponding to the main drainage upper tube 3 is provided in the secondary drainage tube 9, and the upper part of the main drainage lower tube 7 passes through and out of the sealed cavity 12, and the upper end of the passing part is equipped with an upper joint 5 matching the lower joint 4; a slide groove is opened on the outer wall of the secondary drainage tube 9 corresponding to the sealed cavity 12, and a sliding device 6 is provided on the slide groove, and the sliding device 6 is connected to the main drainage lower tube 7 located in the sealed cavity 12.
[0017] Furthermore, the upper and lower end surfaces of the sealed cavity 12 are provided with opposing openings, each of which is provided with a sealing ring. The cavity sliding sleeve 11 is inserted through the sealing ring at the lower opening and exits through the sealing ring at the upper opening. The sliding sleeve 11 is wrapped around the main drainage lower tube 7 located within the sealed cavity 12 and is fixedly connected to the main drainage lower tube 7. A dynamic seal is formed between the sliding sleeve 11 and the openings, so that when the sliding sleeve 11 moves back and forth, the accumulated liquid in the auxiliary drainage tube 9 will not flow out of the sealed cavity 12.
[0018] Furthermore, the sliding device 6 includes a slide rail 6-1 disposed on the side of the slide groove, a slider 6-3 is slidably connected to the slide rail 6-1, and a connecting rod 6-2 is provided on the slider 6-3, the inner end of the connecting rod 6-2 is fixedly connected to the sliding sleeve 11. The slider 6-3 can slide back and forth on the slide rail 6-1. During the sliding process of the slider 6-3, the connecting rod 6-2 can drive the upper joint 4 to move with the movement of the slider 6-3.
[0019] Furthermore, the lower connector 4 is fixedly connected to the inner wall of the auxiliary drainage tube 9 so that the upper connector 4 will not be forced to move in the opposite direction when the lower connector 5 is plugged in with the upper connector 4, which is beneficial to the plugging of the upper connector 4 and the lower connector 5.
[0020] Furthermore, the lower connector 5 is a hollow circular tube with an open lower end, and the upper end of the circular tube is connected to and communicated with the lower end of the main drainage upper tube 3 located in the secondary drainage tube 8 .
[0021] Furthermore, the upper joint 5 includes a hollow circular tube with an open upper end, the lower end of the circular tube is connected and communicated with the upper end of the main drainage lower tube 7 located in the secondary drainage tube 8, and a conical tube is integrally connected to the upper end of the circular tube. The diameter of the upper section of the conical tube is smaller than the inner diameter of the lower joint 5, and the diameter of the lower section of the conical tube is larger than the inner diameter of the lower joint 5.
[0022] When the lower connector 5 is connected to the upper connector 4, the upper portion of the tapered tube is inserted through the lower open end of the upper connector 4. As the lower connector 5 continues to move upward, the outer wall of the lower portion of the tapered tube contacts the lower open end of the upper connector 4, forming a seal. At this point, the main drainage upper tube 3 is connected to the main drainage lower tube 7, and drainage can be carried out.
[0023] Furthermore, a secondary drainage tube 9 extends from the lower portion of the main drainage lower tube 7 and is connected to a negative pressure device. A primary flow limiting device 8 is also installed on the lower portion of the main drainage lower tube 7. The negative pressure device is a prior art device that provides negative pressure within the main drainage lower tube 7. The specific structure and principle will not be described in detail.
[0024] A secondary flow limiting device 10 is installed at the lower part of the secondary drainage tube 9. The main flow limiting device 8 and the secondary flow limiting device 10 can be a flow limiting clamp or a flow limiter similar to a pulley. The flow limiter is a prior art and is not the invention of this application. It includes a shell with an upper end and front and rear openings, and a relatively inclined chute is opened on the inner wall of the shell below the opening. A pulley is placed in the opening, and a rotating shaft is set on both sides of the center of the pulley, and the rotating shaft is located in the chute. The lower part of the main drainage down tube 7 passes through the front and rear openings of the shell. By positioning the pulley at different positions in the chute, the bottom of the pulley can press the main drainage down tube 7, thereby changing the flow area of the main drainage down tube 7.
[0025] When the present application is in use, the main drainage head 2 and the auxiliary drainage head 1 are placed into the wound at the same time, and the rest of the body is located outside the wound. Depending on the need, the auxiliary drainage tube 9 and all the main drainage upper tubes 3 and the main drainage lower tube 7 can be kept unobstructed, or only the auxiliary drainage tube 9 and one main drainage upper tube 3 and the main drainage lower tube 7 can be kept unobstructed. For example, when the flow rate of effusion is large, the auxiliary drainage tube 9 and at least one main drainage upper tube 3 and the main drainage lower tube 7 can be kept unobstructed; when the flow rate of effusion is small, only one main drainage upper tube 3 and the main drainage lower tube 7 can be kept unobstructed.
[0026] The secondary drainage head 1 and the secondary drainage tube 9 are thicker than the main drainage head 2 and the main drainage upper tube 3, so the secondary drainage head 1 and the secondary drainage tube 9 are not easy to clog. When negative pressure drainage is required, the main flow limiting device 8 is used to cut off the remaining main drainage lower tubes 7, leaving only one main drainage lower tube 7 unobstructed, and the secondary flow limiting device 10 cuts off the secondary drainage tube 9. Then, the sliding device 6 corresponding to the main drainage lower tube 7 that remains unobstructed is lifted, driving the sliding sleeve 11 to rise. After the upper joint 4 and the lower joint 5 are plugged in, the negative pressure device is activated, thereby forming a negative pressure at the main drainage head 2 and performing negative pressure drainage. When negative pressure drainage is no longer needed, the negative pressure device is first stopped, and the sliding sleeve 11 is driven down by the sliding device 6. The upper joint 4 and the lower joint 5 are disengaged. Then the secondary flow limiting device 10 is opened, and the secondary drainage tube 9 is connected. At this time, the lower port of the main drainage upper tube 3 is connected to the secondary drainage tube 9. The exudate slowly generated at the wound can enter the secondary drainage tube 9 through the main drainage head 2 and the secondary drainage head 1 to be discharged.
[0027] Since the upper joint 4 and the lower joint 5 are in a disengaged state when there is no negative pressure, the lower joint 5 and the main drainage lower tube 7 are not easily clogged. Even if reverse flushing is performed when blocked, the pressure and agglomerates generated during flushing will enter the secondary drainage tube 9 and be discharged through the pressure relief of the secondary drainage tube 9, so no secondary damage will be caused to the wound.
[0028] When one main drainage upper tube 3 is blocked, it is only necessary to connect another set of main drainage upper tubes 3 and main drainage lower tubes 7 or keep the auxiliary drainage tube 9 unobstructed, without the need for backwashing and reinserting a new drainage tube into the wound.
[0029] The present application provides an auxiliary drainage tube 9 and at least one main drainage upper tube 3, which can be flexibly arranged at the wound surface. The position of the auxiliary drainage head 1 is fixed, and the main drainage head 2 can be adjusted accordingly according to the exudate seepage position or the accumulated fluid discharge position, so that the auxiliary drainage head 1 and the main drainage head 2 are located at the place where the exudate or accumulated fluid flows through.
[0030] The above description is merely an example to clearly illustrate the present application, and is not intended to limit the implementation of the present application. Any obvious changes or modifications derived from the technical solution of the present application are still within the scope of protection of the present application.
Claims
1. A subcutaneous negative pressure drainage device, characterized in that: The utility model comprises a secondary drainage tube with a secondary drainage head, wherein at least one main drainage upper tube is arranged in the secondary drainage tube, the lower part of the main drainage upper tube is located in the secondary drainage tube and is equipped with a lower joint, and the upper part of the main drainage upper tube is located outside the secondary drainage tube and is equipped with a main drainage head; a sealed cavity corresponding to the main drainage upper tube is arranged in the secondary drainage tube, the upper part of the main drainage lower tube passes through and out of the sealed cavity, and the upper end of the passing part is equipped with an upper joint matching the lower joint; a slide groove is opened on the outer wall of the secondary drainage tube corresponding to the sealed cavity, and a sliding device is arranged on the slide groove, and the sliding device is connected to the main drainage lower tube located in the sealed cavity.
2. The subcutaneous negative pressure drainage device according to claim 1, characterized in that: Opposite openings are provided on the upper and lower end surfaces of the sealing cavity, and sealing rings are provided in both openings. The cavity sliding sleeve is inserted into the sealing ring at the lower opening and passes through the sealing ring at the upper opening. The sliding sleeve is wrapped around the outside of the main drainage lower tube located in the sealing cavity and is fixedly connected to the main drainage lower tube.
3. The subcutaneous negative pressure drainage device according to claim 1 or 2, characterized in that: The sliding device comprises a sliding rail arranged on the side of the sliding groove, a sliding block is slidably connected to the sliding rail, a connecting rod is arranged on the sliding block, and the inner end of the connecting rod is fixedly connected to the sliding sleeve.
4. The subcutaneous negative pressure drainage device according to claim 3, characterized in that: The lower joint is fixedly connected to the inner wall of the auxiliary drainage tube.
5. The subcutaneous negative pressure drainage device according to claim 1, characterized in that: The lower joint is a hollow circular tube with an open lower end, and the upper end of the circular tube is connected and communicated with the lower end of the main drainage upper tube located in the auxiliary drainage tube.
6. The subcutaneous negative pressure drainage device according to claim 1, characterized in that: The upper joint includes a hollow circular tube with an open upper end, the lower end of the circular tube is connected and communicated with the upper end of the main drainage lower tube located in the secondary drainage tube, and a conical tube is integrally connected to the upper end of the circular tube. The diameter of the upper cross-section of the conical tube is smaller than the inner diameter of the lower joint, and the diameter of the lower cross-section of the conical tube is larger than the inner diameter of the lower joint.
7. The subcutaneous negative pressure drainage device according to claim 1, characterized in that: An auxiliary drainage tube extends from the lower part of the main drainage lower tube and is connected with the negative pressure device, and a main flow limiting device is arranged on the lower part of the main drainage lower tube.
8. The subcutaneous negative pressure drainage device according to claim 1, characterized in that: A secondary flow limiting device is installed at the lower part of the secondary drainage pipe.