Visual drainage catheter

Abstract

The utility model discloses a visual drainage catheter, including drainage pipe body, the guide head is personally experienced sth, including guide department and a plurality of connecting blocks, a plurality of connecting blocks integrated in the four around of guide department end surface, the connecting block is embedded in the end of drainage pipe body, the guide department is provided with the first camber that protrudes outward to one end away from drainage pipe body, the guide department is close to the middle part of the one end of drainage pipe body and is provided with the second camber that protrudes to the direction of drainage pipe body, the guide pipe is through setting in the drainage pipe body, and the end of guide pipe is integrated with camera. The utility model discloses through connecting block limiting structure, can form accurate positioning constraint to the guide pipe of through drainage pipe body, effectively limit the radial deviation and axial migration of guide pipe, effectively avoid the problem that guide pipe works in the process from the drainage hole and protrude, effectively reduce the tissue damage of the misplacement of guide pipe, guarantee the stability and security of guide operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a visual drainage catheter. Background Technology

[0002] Ventricular drainage and cerebrospinal fluid drainage of hematoma cavities are minimally invasive clinical diagnostic and treatment techniques in neurosurgery. They are widely used in the treatment of severe neurological diseases such as hydrocephalus, intraventricular hemorrhage, hypertensive intracerebral hemorrhage, and intracranial hypertension. Primarily, they are used to drain and remove intracranial hematomas, regulate intracranial pressure, restore normal cerebrospinal fluid circulation, and reduce the toxic damage of hematoma degradation products to nerve tissue. These techniques are crucial for saving the lives of neurosurgical patients and improving their prognosis. The core requirements for this type of drainage surgery are precise intraoperative catheter placement, unobstructed drainage, minimal trauma, and visual observation of the surgical area. Simultaneously, it must ensure accurate puncture guidance, adequate intraoperative replacement of hematoma fluid for irrigation to prevent blockage, and flexible flow control, maximizing the safety and effectiveness of the surgery and minimizing the risk of complications.

[0003] Most existing visual drainage catheters use flat or spherical tips. Flat tips, due to their flat end face, have a large contact area with surrounding tissues when the catheter is inserted into the brain tissue, resulting in greater insertion resistance and exacerbating brain tissue damage. Spherical tips are generally directly embedded into the end of the drainage tube for fixation. Although spherical tips have a certain degree of smoothness, the bonding area between the spherical tip and the tube body is small and not firm, and there may be abrupt changes in diameter, resulting in an uneven and rough connection. This makes the catheter prone to falling out and causing serious consequences when inserted into the brain. Furthermore, the edges can cause mechanical damage to brain tissue. In addition, there is no guiding structure inside the drainage catheter when it is inserted, and the catheter can easily pass through the drainage hole, causing tissue damage. Utility Model Content

[0004] This invention provides a visual drainage catheter to solve one of the aforementioned technical problems.

[0005] This utility model provides a visual drainage catheter, including a drainage tube body; a guide head, including a guide portion and several connecting blocks, wherein the several connecting blocks are integrally formed around the guide portion near one end of the drainage tube body, the connecting blocks are embedded in the end of the drainage tube body, the guide portion has a first curved surface protruding outward at one end away from the drainage tube body, and the guide portion has a second curved surface protruding towards the drainage tube body at the middle of one end near the drainage tube body; and a guide tube, which is disposed through the drainage tube body, and a camera is embedded in the end of the guide tube.

[0006] Preferably, a plurality of the connecting blocks are arranged around the second curved surface, and a guide slope is provided on the side of the plurality of connecting blocks near the second curved surface, the guide slope being inclined in the direction toward the second curved surface.

[0007] Preferably, the outer peripheral surface of the first curved surface is continuously connected to the outer peripheral surface of the tube wall of the drainage tube.

[0008] Preferably, the drainage tube body includes a drainage cavity and a flushing cavity, the flushing cavity has at least one flushing hole, the flushing hole is connected to the drainage cavity, and the tube wall of the drainage tube body has a drainage hole, the drainage hole is connected to the drainage cavity.

[0009] Preferably, there are two drainage holes, which are located on opposite sides of the wall of the drainage tube.

[0010] Preferably, it further includes a Y-type connector, a first branch pipe, and a second branch pipe. The first end of the Y-type connector is connected to the drainage tube body, the second end of the Y-type connector is connected to the first branch pipe, and the third end of the Y-type connector is connected to the second branch pipe. The first branch pipe is connected in communication with the drainage cavity, and the second branch pipe is connected in communication with the flushing cavity.

[0011] Preferably, a first pipe clamp is provided on the first branch pipe, and the first pipe clamp is used to control the opening and closing of the first branch pipe.

[0012] Preferably, a second pipe clamp is provided on the second branch pipe, and the second pipe clamp is used to control the on / off state of the second branch pipe.

[0013] Preferably, the end of the guide tube is also integrated with a supplementary light source.

[0014] Preferably, the connecting block is connected and fixed to the drainage tube body using medical adhesive.

[0015] The main beneficial effects of this utility model are as follows: 1. This utility model uses an outwardly protruding first curved surface as the front-end guiding structure of the guide tip, which eliminates the disadvantages of the flat end face and large contact area of ​​the traditional flat-tipped guide tip. The curved arc structure can realize progressive puncture and catheter placement, effectively reducing the contact area and frictional resistance between the guide tip and human tissue and cavity. The catheter placement operation is more labor-saving and smoother for medical staff, avoiding the squeezing and friction damage to the normal tissue around the lesion caused by the hard advancement of the flat-tipped guide tip, greatly reducing the risk of mechanical trauma during the catheter placement process and improving the patient's treatment comfort. 2. This utility model, through the connecting block limiting structure, can form a precise positioning constraint on the guide tube that penetrates the drainage tube body, effectively limiting the radial offset and axial movement of the guide tube, effectively avoiding the problem of the guide tube passing through the drainage hole during operation, effectively reducing tissue damage caused by guide tube misalignment, and ensuring the stability and safety of the guidance operation.

[0016] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of the invention. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the invention. Furthermore, the specification and drawings serve to explain the principles of the invention. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the visible drainage conduit structure according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the end of the drainage catheter according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the guide head structure according to an embodiment of the present utility model; Icons: 100-Drainage tube body; 110-Drainage cavity; 111-Drainage hole; 120-Flushing cavity; 121-Flushing hole; 200-Guide head; 210-Guide section; 211-First curved surface; 212-Second curved surface; 220-Connecting block; 221-Guide slope; 300-Guide tube; 310-Camera; 320-Supplemental light source; 400-Y-type connector; 500-First branch tube; 510-First tube clamp; 600-Second branch tube; 610-Second tube clamp. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0023] Example like Figure 1-3 As shown, this embodiment provides a visual drainage catheter, including a drainage tube body 100, a guide head 200, and a guide tube 300. The guide head 200 includes a guide portion 210 and connecting blocks 220. A plurality of connecting blocks 220 are integrally formed around the guide portion 210 near one end of the drainage tube body 100. The connecting blocks 220 are embedded in the end of the drainage tube body 100 and are fixed by adhesive with medical adhesive. Compared with the traditional ball-shaped guide head, which is directly embedded into the end of the drainage tube body through interference fit, this application uses connecting blocks 220 for fixation, resulting in a larger contact area with the drainage tube body 100, a more secure connection, and preventing the guide head 200 from falling off. The guide section 210 has a first curved surface 211 protruding outward at one end away from the drainage tube body 100, and a second curved surface 212 protruding towards the drainage tube body 100 at the middle of one end of the guide section 210 near the drainage tube body 100; the guide tube 300 is disposed inside the drainage tube body 100, and a camera 310 and a supplementary light source 320 are embedded in the end of the guide tube 300. The guide tube 300 can view the internal situation while guiding through the camera 310.

[0024] In this embodiment, the first curved surface 211 and the second curved surface 212 form a biconvex coaxial lens structure, making the guide head 200 form a symmetrical lens body structure. This structure has a specific optical control effect on the light emitted by the supplementary light source 320.

[0025] After light enters from one side of the second curved surface 212, it is refracted inside the guide head 200. Since the two arc surfaces form a biconvex coaxial lens structure, the light converges towards the center inside the guide head 200. Then, when it exits from the first curved surface 211, it diffuses outward, thus realizing the light focusing-diffusion effect.

[0026] This optical effect significantly enhances the lighting effect and expands the lighting coverage, enabling the camera 310 to obtain a wider and more uniform field of view, making it easier for medical staff to fully observe the tissue around the drainage catheter and accurately locate the lesion.

[0027] In this embodiment, the drainage tube body 100 can be a single-lumen drainage tube or a multi-lumen drainage tube, and no specific limitation is made here.

[0028] In one specific embodiment, a plurality of connecting blocks 220 are arranged around the second curved surface 212, and a guide slope 221 is provided on the side of the plurality of connecting blocks 220 near the second curved surface 212.

[0029] In this embodiment, the guide slope 221 guides and limits the guide tube 300, making the position of the guide tube 300 more accurate after insertion, and preventing the guide tube 300 from slipping out of the drainage hole 111 and scratching the patient when it deviates. It should be noted that during the assembly process, the connecting block 220 should be avoided from blocking the drainage hole 111, and the two should be installed separately.

[0030] In one specific embodiment, the guide portion 210 and the edge of the end of the drainage tube 100 are smoothly transitioned.

[0031] In this embodiment, the outer peripheral surface of the first curved surface 211 is continuously connected to the edge of the outer peripheral surface of the drainage tube body 100. There are no steps or sharp edges at the connection point, so it will not scratch the internal tissue when inserted into the human body. The traditional spherical guide is directly embedded into the end of the drainage tube body. Due to the structural limitations of the spherical shape, it is impossible to achieve a smooth transition between the spherical guide and the end of the drainage tube body, which can easily scratch the internal tissue.

[0032] In one specific embodiment, the drainage tube body 100 includes a drainage cavity 110 and a flushing cavity 120. The flushing cavity 120 has at least one flushing hole 121, which is connected to the drainage cavity 110. The tube wall of the drainage tube body 100 has a drainage hole 111, which is connected to the drainage cavity 110.

[0033] Furthermore, there are two drainage holes 111, which are symmetrically arranged on the wall of the drainage tube body 100.

[0034] Traditional flushing holes are directly connected to the drainage tube body. During flushing, flushing fluid is introduced through the flushing chamber and discharged directly from the flushing hole. In this case, the flushing location is mainly determined by the location of the flushing hole. In this embodiment, the flushing fluid in the flushing chamber 120 enters the drainage chamber 110 after passing through the flushing hole 121 and is discharged from the drainage hole 111. Generally, two drainage holes 111 are provided and located on opposite sides of the tube wall. The flushing fluid is flushed from both sides, resulting in a larger and more uniform flushing range. Furthermore, the two drainage holes 111 help improve drainage efficiency and make the drainage more uniform.

[0035] In one specific embodiment, it further includes a Y-type connector 400, a first branch pipe 500 and a second branch pipe 600. The first end of the Y-type connector 400 is connected to the drainage tube body 100, the second end of the Y-type connector 400 is connected to the first branch pipe 500, and the third end of the Y-type connector 400 is connected to the second branch pipe 600. The first branch pipe 500 is connected in a through connection to the drainage cavity 110, and the second branch pipe 600 is connected in a through connection to the flushing cavity 120.

[0036] In this embodiment, two independent branch tubes are separated by the Y-type connector 400. The first branch tube 500 is used to connect to the drainage device, and the drainage device is used to drain the internal accumulated fluid and pus from the drainage hole 111. After passing through the drainage cavity 110, it is led out from the first branch tube 500. The second branch tube 600 serves as a flushing, drug administration and sampling channel. It can be connected to different devices to achieve specific functions as needed. It can inject flushing fluid and drugs into the lesion, or extract specimens for testing.

[0037] Furthermore, a first pipe clamp 510 is provided on the first branch pipe 500, which is used to control the on / off state of the first branch pipe 500.

[0038] The first branch pipe 500 is opened and closed by the first clamp 510, thereby controlling the opening and closing of the drainage chamber 110. When flushing, the drainage chamber 110 can be closed by the first clamp 510. At this time, the flushing fluid will not enter the drainage device and can only be discharged from the drainage hole 111 to achieve flushing. When draining, the first branch pipe 500 is opened by the first clamp 510 and the drainage device is used for drainage.

[0039] Furthermore, a second pipe clamp 610 is provided on the second branch pipe 600, which is used to control the on / off state of the second branch pipe 600.

[0040] The second branch tube 600 is controlled by the second clamp 610, thereby controlling the opening and closing of the flushing chamber 120. The second clamp 610 is closed when drainage is needed, and the second clamp 610 is opened when flushing or medication is required.

[0041] In this embodiment, the first pipe clamp 510 and the second pipe clamp 610 are Robert clamps in the prior art, which are one-piece elastic plastic buckle clamps. When the clamps tighten the hose, they squeeze the pipe wall to close the pipeline and block the fluid; when the clamps are released, the pipeline is unblocked.

[0042] The working principle of this invention is as follows: In the preoperative stage, only the target point and approach for catheter placement need to be planned based on the patient's brain imaging. The integrity of the drainage tube 100 is checked, and the camera 310 and supplementary light source 320 at the end of the guide tube 300 are adjusted to ensure that the imaging and illumination functions of the equipment are normal. After this, the minimally invasive visual catheter placement operation can be carried out. After completing the preoperative preparation and establishing the minimally invasive cranial channel, the catheter placement operation can be carried out. First, the guide tube 300, which integrates the camera 310 and supplementary light source 320, is inserted into the drainage tube 100 and centered. The guide head 200 of this device is embedded in the end of the drainage tube 100 through an integrally formed connecting block 220 and reinforced with medical adhesive. Compared with the traditional connection structure, the overall connection strength is greatly improved, which can effectively avoid the risk of loosening or falling off of the guide head 200 during intraoperative operation and postoperative drainage. Meanwhile, the first curved surface 211 and the second curved surface 212 of the guide section 210 of the guide head 200 form an optical lens structure. The light output from the supplementary light source 320 can be refracted and converged by the second curved surface 212, and then evenly diffused by the first curved surface 211. With the coaxially arranged camera 310 acquiring intracranial images in real time, the entire process of catheter placement is visualized, and the drainage tube 100 is precisely guided to the target location in the hematoma cavity or ventricle. During this process, the guide slope 221 on the inner side of the connecting block 220 can precisely limit the guide tube 300 throughout the entire process, avoiding the guide tube 300 from deviating or shaking. Moreover, the first curved surface 211 of the guide section 210 and the tube wall of the drainage tube 100 have a smooth transition without assembly edges or step structures, which can effectively reduce frictional damage to intracranial brain tissue during puncture and significantly improve the safety and accuracy of catheter placement.

[0043] Once the drainage tube 100 is precisely positioned, the device can perform flushing and drainage operations based on its internal dual-cavity structure. The drainage tube 100 has independent drainage cavities 110 and flushing cavities 120, enabling separate flow operations without cross-flow interference. The drainage tube 100 has symmetrical drainage holes 111 on both sides of its wall, communicating with the drainage cavities 110. This allows for efficient and uniform drainage of intracranial cerebrospinal fluid and blood / fluid accumulation, effectively reducing the risk of drainage failure due to blockage of a single hole. Meanwhile, the irrigation chamber 120 is equipped with an irrigation hole 121 that communicates with the drainage chamber 110. During the operation, the irrigation fluid can be introduced through the irrigation chamber 120, and after flowing into the drainage chamber 110 through the irrigation hole 121, it will diffuse out through the drainage holes 111 on both sides, realizing the circulation irrigation of the hematoma cavity and ventricle without dead angles. It can effectively flush out blood clots and tissue fragments in the tubes and lesions, and avoid tube blockage from the root. It solves the technical defects of traditional drainage catheters that are not thorough in removing hematomas and are easy to block. The Y-type connector 400 set at the proximal end of the drainage tube body 100 can effectively separate the two tubes, further ensuring the independence and stability of the dual-lumen operation.

[0044] To adapt to different clinical diagnostic and treatment needs, this device uses a Y-type connector 400 with a dual-branch, dual-clamp structure to achieve flexible function switching. The first branch 500 and the second branch 600 connected to the Y-type connector 400 respectively connect to the drainage chamber 110 and the irrigation chamber 120. The first branch 500 and the second branch 600 are each equipped with an independent first clamp 510 and a second clamp 610 to control the flow of the tubing. When the first clamp 510 is closed and the second clamp 610 is opened, the irrigation passage can be used independently to complete intraoperative saline irrigation, lesion drug infusion, and body fluid sampling, effectively avoiding backflow of irrigation fluid and drugs to contaminate the drainage passage. Conversely, when the first clamp 510 is opened and the second clamp 610 is closed, the negative pressure drainage passage can be used independently to continuously drain intracranial effusion and hemorrhage, while preventing backflow of drainage fluid to contaminate the irrigation chamber 120. The structural design can meet the diverse needs of intraoperative emergency diagnosis and treatment and long-term postoperative drainage, and is convenient to operate and highly practical.

[0045] After completing the intraoperative diagnostic and treatment procedures, the drainage tube 100 is fixed in a standardized manner, and the drainage suspension height is precisely adjusted according to clinical standards to stably maintain the patient's intracranial pressure within the normal range. This effectively avoids complications such as sudden changes in intracranial pressure, cerebral ischemia, and rebleeding caused by excessive or insufficient drainage. Once the patient's intracranial effusion and hemorrhage have been completely cleared and the condition has recovered to the target level, the drainage tube 100 can be removed, and the instrument disposal is carried out in strict accordance with medical standards.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A visual drainage catheter, characterized in that, include: Drainage tube body; The guide head includes a guide part and several connecting blocks. The several connecting blocks are integrally formed around the guide part near the end of the drainage tube body. The connecting blocks are embedded in the end of the drainage tube body. The guide part away from the drainage tube body has a first curved surface that protrudes outward. The guide part near the end of the drainage tube body has a second curved surface that protrudes towards the drainage tube body in the middle. A guide tube is inserted through the body of the drainage tube, and a camera is embedded in the end of the guide tube.

2. The visual drainage catheter according to claim 1, characterized in that, A plurality of connecting blocks are arranged around the second curved surface, and a guide slope is provided on the side of the plurality of connecting blocks near the second curved surface, the guide slope being inclined in the direction toward the second curved surface.

3. The visual drainage catheter according to claim 1, characterized in that, The outer peripheral surface of the first curved surface is continuously connected to the outer peripheral surface of the tube wall of the drainage tube.

4. A visual drainage catheter according to claim 1, characterized in that, The drainage tube body includes a drainage cavity and a flushing cavity. The flushing cavity has at least one flushing hole, which is connected to the drainage cavity. The tube wall of the drainage tube body has a drainage hole, which is connected to the drainage cavity.

5. A visual drainage catheter according to claim 4, characterized in that, The number of drainage holes is two, and the two drainage holes are located on opposite sides of the tube wall of the drainage tube body.

6. A visual drainage catheter according to claim 5, characterized in that, It also includes a Y-type connector, a first branch pipe and a second branch pipe. The first end of the Y-type connector is connected to the drainage tube body, the second end of the Y-type connector is connected to the first branch pipe, and the third end of the Y-type connector is connected to the second branch pipe. The first branch pipe is connected in a through connection to the drainage cavity, and the second branch pipe is connected in a through connection to the flushing cavity.

7. A visual drainage catheter according to claim 6, characterized in that, A first pipe clamp is provided on the first branch pipe, and the first pipe clamp is used to control the opening and closing of the first branch pipe.

8. A visual drainage catheter according to claim 6, characterized in that, A second pipe clamp is provided on the second branch pipe, which is used to control the on / off state of the second branch pipe.

9. A visual drainage catheter according to claim 1, characterized in that, The end of the guide tube is also integrated with a supplementary light source.

10. A visual drainage catheter according to claim 1, characterized in that, The connecting block is connected and fixed to the drainage tube body using medical adhesive.

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