A sutureless drainage tube within a tissue incision
By incorporating an inflatable cyst structure and a media monitoring system at the aspiration end of the main drainage tube, the problem of difficulty in judging the suture status during surgery is solved, enabling real-time monitoring and correction of suture errors during surgery, thus improving surgical safety and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU UNIV
- Filing Date
- 2025-04-18
- Publication Date
- 2026-07-21
Smart Images
Figure CN224523787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a drainage tube for preventing sutures inside tissue incisions. Background Technology
[0002] In clinical practice, the routine use of drainage tubes after surgery is an important measure to prevent postoperative hematoma and effusion. Taking orthopedic surgery as an example, the drainage tube needs to be precisely pre-embedded near the bone tissue after surgery to effectively drain the effusion during the postoperative recovery period. The drainage tube can be removed directly after the drainage is completed.
[0003] However, in traumatic surgery, wound closure is required after the drainage tube is implanted. Because drainage tubes need to meet biocompatibility and flexibility requirements, their materials are usually quite soft. During wound closure, surgeons rely primarily on visual inspection and personal experience, lacking reliable intraoperative assessment methods. This can easily lead to the drainage tube accidentally suturing into the patient's muscle fascia layer. When the drainage tube needs to be removed postoperatively, it may be difficult to remove smoothly due to adhesion between the tube and tissue. In this case, the wound must be reopened for suture removal, which not only increases the patient's pain and risk of infection but may also affect the surgical prognosis. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a drainage tube that can determine the suture status in a timely manner during surgery.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A drainage tube for preventing sutures in tissue incisions includes a main body with an internal suction channel. One end of the main body is pre-embedded at the wound suture site as a suction end, and the other end is connected to a negative pressure device. A sac covers the outside of the suction end of the main body, forming a medium space between the sac and the main body. A medium section is connected at one end to the medium space for delivering medium into the medium space. A test piece is disposed at the other end of the medium section for detecting medium leakage in the medium space.
[0007] As a further preferred embodiment, the capsule is a deformable thin film.
[0008] As a further preferred embodiment, the main body is provided with a medium channel, through which the medium section transmits the medium into the medium space.
[0009] As a further preferred embodiment, the main body is provided with an input port and an output port, and both the input port and the output port are connected to the medium channel; the input port is connected to the medium section, and the output port is connected to the medium space, forming a medium transmission path.
[0010] As a further preferred embodiment, the medium channel is located within the wall of the main tube.
[0011] As a further preferred embodiment, the main body has a suction port communicating with the suction channel, and the capsule is provided with a guide channel corresponding to the suction port. The suction port is exposed outside the capsule and communicates with the outside through the guide channel.
[0012] As a further preferred embodiment, the opening area of the flow channel is larger than the opening area of the suction port.
[0013] As a further preferred embodiment, the flow channel is an inverted pyramidal structure formed by a depression from the outer surface of the capsule inward.
[0014] As a further preferred embodiment, a plurality of suction ports arranged circumferentially around the main body are grouped together, and multiple groups of suction ports are provided along the extension direction of the main body.
[0015] As a further preferred embodiment, the test piece includes a bubble body and a one-way valve for detecting the sealing performance of the media space.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This invention relates to a drainage tube with an inflatable sac structure at the aspiration end of the main tube, creating a sealed medium space between the main tube and the sac. By monitoring pressure changes or leakage within this medium space, surgeons can determine in real-time whether the drainage tube was mistakenly sutured to the patient's muscle fascia layer during surgery. This allows for timely detection and correction of suturing errors, preventing complications such as difficulty in tube removal postoperatively. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the drainage tube in this utility model;
[0019] Figure 2 Is it like this? Figure 1 A cross-sectional view of the drainage tube shown.
[0020] Figure 3 Is it like this? Figure 1 A cross-sectional view of the drainage tube from another perspective.
[0021] It includes: 1. Main body; 101. Suction channel; 102. Medium channel; 103. Inlet; 104. Outlet; 105. Suction port; 2. Bag body; 201. Flow guide channel; 3. Medium section; 4. Test piece; 401. Bubble body; 402. Check valve. 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] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0026] Reference Figures 1-3 This embodiment discloses a drainage tube for preventing suturing inside a tissue incision, including a main tube body 1, a sac body 2, a medium part 3, and a test piece 4. The main tube body 1 has an aspiration channel 101, which means that the inside of the main tube body 1 is hollow so that the accumulated fluid can be drawn out from the patient's body through the aspiration channel 101. It is also known that since the main tube body 1 needs to be pre-embedded in the patient's body, the material of the main tube body 1 is generally soft, that is, it can adapt to deformation to a certain extent so as not to compress the patient.
[0027] The sac 2 is located on the outside of the suction end of the main tube 1 (it can be understood that, in this embodiment, the suction end of the main tube 1 is the end pre-embedded in the patient's body during the operation). A medium space is formed between the sac 2 and the main tube 1. Specifically, in this embodiment, the sac 2 has an approximately thin film structure, with both its front and rear ends attached to the outside of the main tube 1 to form a certain medium space on the outside of the suction end of the main tube 1. At the same time, similar to the main tube 1, the sac 2 in this embodiment can also undergo a certain degree of deformation. That is, when there is medium in the medium space, the sac 2 can bulge relative to the main tube 1. When there is no medium in the medium space, the sac 2 is relatively compressed to get close enough to the main tube 1 to reduce the pressure on the patient.
[0028] Preferably, the size of the sac 2 can be adaptively enlarged along the axial direction of the main tube 1, thereby increasing the coverage area of the sac 2 and facilitating the assessment of the suture status. Meanwhile, the size of the sac 2 can be adaptively reduced along the radial direction of the main tube 1, thereby reducing the radial dimension of the overall structure, thus reducing pressure on the patient and improving patient comfort.
[0029] One end of the medium section 3 is connected to the medium space to allow the medium to be transferred into the medium space. Specifically, in this embodiment, the medium can be either a gas or a liquid. For example, a gas can be normal oxygen, and a liquid can be commonly used medical saline solution. After the medium is transferred into the medium space, it fills the medium space, causing the sac 2 to bulge outside the main tube 1. Specifically, in this embodiment, the medium section 3 can be connected to a corresponding medium supply device (any gas / liquid supply mechanism commonly used in the prior art will be acceptable, and will not be elaborated further here) to achieve the transfer of the medium into the medium space. In this embodiment, the medium section 3 can also be configured as a tubular structure to facilitate medium transfer and simultaneously reduce the wound area for easier intraoperative suturing.
[0030] Test element 4 is disposed at the other end of the medium section 3. Test element 4 is used to test whether the medium in the medium space leaks, allowing medical personnel to determine whether the drainage tube has been sutured to the patient's myofascia layer during suturing, thus enabling timely intraoperative intervention. More specifically, in this embodiment, test element 4 can be constructed using a one-way valve structure from the prior art. That is, test element 4 includes a bubble body 401 and a one-way valve 402 connected thereto; its specific structure will not be described in detail here. Due to the restriction of the one-way valve 402, when the medium supply device continuously transmits the medium, if the bubble body 401 bulges, it indicates that the medium in the medium space has not leaked; conversely, it indicates that the medium in the medium space has leaked, meaning that the cyst 2 has been punctured by the suture needle and sutured to the patient's myofascia layer, thus enabling rapid intraoperative intervention. Furthermore, in this embodiment, the medium in the medium space can be pre-filled with the medium before surgery or during surgery; this only needs to be completed before the suturing action.
[0031] Based on the above, preferably, in this embodiment, the main tube 1 is provided with a medium channel 102, and the medium section 3 transmits the medium into the medium space through the medium channel 102. The aforementioned medium channel 102 may be independent of the outside of the main tube 1, or it may be part of the main tube 1. Preferably, in this embodiment, the medium channel 102 is part of the main tube 1. That is, it can be understood that since the main tube 1 itself has a wall thickness, the aforementioned medium channel 102 is located inside the tube wall of the main tube 1, thereby realizing the flow of the medium without changing the radial dimension of the main tube 1 itself, which is beneficial to surgical operation. Moreover, compared to the arrangement of the medium channel 102 being independent of the main tube 1, this arrangement is beneficial to the assembly and use of the overall structure.
[0032] Based on the premise that the aforementioned medium channel 102 is located within the pipe wall of the main pipe 1, it can be understood that the main pipe 1 is provided with an inlet 103 and an outlet 104, both of which are connected to the medium channel 102. The medium section 3 is connected to the inlet 103, and the outlet 104 is connected to the medium space to form a transmission path. Furthermore, multiple outlets 104 can be provided along the axial direction of the main pipe 1 to improve the medium transmission effect and facilitate the determination of whether there is a leakage of the medium within the medium space.
[0033] Specifically, in this embodiment, the capsule 2 is provided with a flow channel 201, and the main tube 1 has a suction port 105 communicating with the suction channel 101. The suction port 105 is exposed outside the capsule 2 through the flow channel 201. It can be understood that since the capsule 2 covers the outside of the main tube 1, it will block the suction port 105 of the main tube 1 used for suctioning accumulated fluid. By setting the flow channel 201, the suction port 105 can achieve normal suction operation. Preferably, the opening area of the flow channel 201 is larger than the opening area of the suction port 105. That is, it can be understood that the flow channel 201 can minimize the limitation on the suction efficiency of the suction port 105. Based on the aforementioned capsule 2 being a thin film structure, the flow channel 201 in this embodiment can be represented as being recessed from the outer surface of the capsule 2 and docking with the suction port 105 to form a certain suction space. The suction space can be approximately inverted pyramidal in shape, such as an inverted triangular pyramid or a square pyramid. In this embodiment, in order to facilitate processing and batch processing, the suction space is set to approximately a square pyramidal shape.
[0034] Preferably, multiple suction ports 105 are circumferentially distributed around the main tube 1, thereby improving the efficiency of the entire drainage tube in suctioning accumulated fluid. The suction ports 105 can be arranged in a circumferential array around the main tube 1. In this embodiment, based on the structural dimensions of the main tube 1 and the size requirements of the suction ports 105, two suction ports 105 are set along the circumference of the main tube 1, i.e., two suction ports 105 are arranged opposite each other. Furthermore, multiple suction ports 105 circumferentially distributed around the main tube 1 form a group, and multiple groups of suction ports 105 are provided along the extension direction of the main tube 1, thereby further improving suction efficiency. Preferably, the suction ports 105 are arranged in a regular graphic shape, such as square or circular, to facilitate mass production; in this embodiment, they are set to circular.
[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.
Claims
1. A drainage tube for preventing sutures within a tissue incision, characterized in that: Includes a main body (1), which has a suction channel (101) inside. One end of the main body (1) is pre-embedded in the wound suture as the suction end, and the other end is connected to a negative pressure device. The capsule (2) covers the outside of the suction end of the main body (1) and forms a medium space between it and the main body (1); the medium part (3) has one end connected to the medium space and is used to deliver the medium into the medium space; the test piece (4) is set at the other end of the medium part (3) and is used to detect the leakage of the medium space.
2. The drainage tube for preventing sutures inside a tissue incision according to claim 1, characterized in that: The capsule (2) is a deformable thin film.
3. A drainage tube for preventing sutures inside a tissue incision according to claim 2, characterized in that: The main body (1) is provided with a medium channel (102), and the medium part (3) conveys the medium into the medium space through the medium channel (102).
4. A drainage tube for preventing sutures inside a tissue incision according to claim 3, characterized in that: The main body (1) is provided with an input port (103) and an output port (104), and both the input port (103) and the output port (104) are connected to the medium channel (102); the input port (103) is connected to the medium section (3), and the output port (104) is connected to the medium space to form a medium transmission path.
5. A drainage tube for preventing sutures inside a tissue incision according to claim 4, characterized in that: The medium channel (102) is located inside the pipe wall of the main body (1).
6. A drainage tube for preventing sutures inside a tissue incision according to claim 2, characterized in that: The main body (1) has a suction port (105) communicating with the suction channel (101), and the capsule (2) is provided with a guide channel (201) corresponding to the suction port (105). The suction port (105) is exposed outside the capsule (2) and communicates with the outside through the guide channel (201).
7. A drainage tube for preventing sutures inside a tissue incision according to claim 6, characterized in that: The opening area of the flow channel (201) is larger than the opening area of the suction port (105).
8. A drainage tube for preventing sutures inside a tissue incision according to claim 7, characterized in that: The flow channel (201) is an inverted pyramidal structure formed by indentation from the outer side of the capsule (2).
9. A drainage tube for preventing sutures inside a tissue incision according to claim 6, characterized in that: A plurality of suction ports (105) arranged circumferentially around the main body (1) are grouped together, and multiple groups of suction ports (105) are provided along the extension direction of the main body (1).
10. A drainage tube for preventing sutures inside a tissue incision according to claim 1, characterized in that: The test piece (4) includes a bubble body (401) and a one-way valve (402) for detecting the sealing of the medium space.