Drainage device

Abstract

The utility model relates to a drainage device. The drainage device comprises a drainage tube (1) and a supporting assembly, a first cavity (12) is formed in the drainage tube (1), and an opening (13) communicated with the first cavity is formed in the wall of the tail end (11) of the drainage tube; the supporting assembly comprises a supporting body (14) and a tracing component (16). The supporting body is arranged in the second cavity (15) of the drainage tube (1) and supports the drainage tube in the process that the drainage tube is implanted into the body. A concave part (161) for accommodating the tracing component is formed on the support body; the supporting assembly further comprises a sleeve which is arranged outside the supporting body and covers the supporting body and the tracing component. According to the drainage device, preoperative planning and intraoperative navigation can be carried out, the operation precision is improved, any appearance size of a traditional drainage tube is not changed, the drainage device is small in size, and the manufacturing and assembling process is simple.

Description

Technical Field

[0001] The utility model relates to the field of neurosurgical medical devices, in particular to a drainage device, and more particularly to a drainage device that can be implanted under electromagnetic navigation and a system for navigating the implantation surgery of the drainage device. Background Art

[0002] Drainage devices are widely used in external drainage operations for patients with craniocerebral trauma or craniocerebral lesions. In addition to being used for craniocerebral drainage, drainage devices are also widely used in fields such as abdominal cavity, thoracic cavity, and gallbladder drainage.

[0003] For patients with intracranial hematoma, effusion, and / or increased intracranial pressure caused by craniocerebral trauma or craniocerebral lesions, it is necessary to promptly perform craniocerebral drainage and continuously monitor the intracranial pressure to avoid the harm caused by intracranial hypertension to the patients.

[0004] For the existing intracranial pressure monitoring and cerebrospinal fluid drainage systems, the position of the drainage tube cannot be known during implantation, and the pressure sensor and cerebrospinal fluid drainage system are completely implanted into the ventricle by the surgeon's experience. However, due to the individual differences in the brain structure of patients or the displacement of brain tissue structures caused by brain tumors, surgeons need to spend more time dissecting and identifying brain tissue structures. During the implantation process, doctors also need to repeatedly use imaging equipment to fluoroscope to judge the position of the drainage tube, which increases the radiation damage to patients and doctors. Moreover, there are still some patients whose normal brain tissues are damaged during the implantation process, resulting in medical accidents. Summary of the Utility Model

[0005] The purpose of the utility model is to solve at least one of the above problems and / or other problems existing in the prior art.

[0006] To achieve the above purpose, according to one aspect of the utility model, a drainage device is provided. The drainage device includes a drainage tube and a support assembly. The drainage tube includes a distal end adapted to be inserted into a patient's body. A first cavity and a second cavity are formed in the drainage tube, and an opening communicating with the first cavity is formed in the wall of the drainage tube at the distal end. The support assembly includes a support body and a tracer member. The support body is disposed in the second cavity of the drainage tube and supports the drainage tube during the process of implanting the drainage tube into the body. A recess for accommodating the tracer member is formed in the support body. The support assembly further includes a sleeve disposed outside the support body and covering the support body and the tracer member.

[0007] In this solution, since a tracer component is provided on the support body (also called an auxiliary guide needle) in the drainage tube, the implantation position of the drainage tube can be obtained in real time by tracking the tracer component, and navigation can be performed according to the patient's brain image. For example, doctors can perform preoperative implantation path planning on preoperative images (such as MRI images) and implant the drainage tube under real-time navigation during the operation, which not only improves the placement accuracy of the drainage tube, but also the meticulous preoperative path planning can avoid damage to important neural units in the ventricles.

[0008] Furthermore, since the tracer component is integrated on the support body (for example, on its front end), any external dimensions of the traditional drainage tube are not changed, no additional patient incision is added, and the exterior of the support component is covered by a sleeve, integrated into an integral piece and disposed in the second cavity, making the drainage device more compact, small in size, and the manufacturing and assembly process is simple and easy.

[0009] According to one example of the utility model, the drainage device is a cranial drainage device and also includes a pressure sensing device for monitoring intracranial pressure; wherein a third cavity is also formed in the drainage tube, the pressure sensing device is arranged in the third cavity and exposed from the third cavity at the end to measure the pressure in the external environment near the end.

[0010] In this example, by providing a pressure sensor in the drainage tube, the intracranial pressure monitoring function is also integrated into the cerebral drainage device.

[0011] According to an example of the present invention, the second cavity and the third cavity are formed on both sides of the first cavity. This example can avoid electromagnetic interference between the pressure sensing device and the tracing member such as an electromagnetic sensor as much as possible, so as to improve the tracking accuracy of the tracing member and the sensing accuracy of the pressure sensing device.

[0012] According to an example of the utility model, the wall of the first cavity close to the second cavity and the third cavity is an arc-shaped wall, and the first cavity is defined by the two arc-shaped walls and fan-shaped walls connecting the two arc-shaped walls at both ends of the two arc-shaped walls, wherein the opening leads from the two fan-shaped walls to the outer surface of the drainage tube.

[0013] The arrangement of the first cavity, the second cavity and the third cavity in this example makes it possible to maximize the cross-sectional area of ​​the first cavity, i.e., the drainage cavity, and to achieve more efficient drainage.

[0014] According to an example of the present invention, a groove for accommodating a wire of the tracing member is further formed on the support body, wherein the sleeve also covers the wire.

[0015] According to an example of the present invention, the tracing component is an electromagnetic sensor.

[0016] According to an example of the present utility model, the sleeve is a heat-shrinkable tube.

[0017] According to an example of the present utility model, the sleeve is an insulating tube.

[0018] According to an example of the present utility model, the device further includes a tracking device configured to track the tracer member.

[0019] According to another aspect of the present utility model, there is also provided a system capable of navigating the implantation surgery of the drainage device. The system includes a control device and the drainage device according to any of the above examples, wherein the control device is further configured to be suitable for preoperative planning and intraoperative navigation of the implantation surgery. Since this system can navigate the implantation surgery of the drainage device and can perform detailed preoperative planning, the implantation of the drainage device is more accurate, reducing damage to the patient, such as their cranial tissue, and improving the success rate of the surgery. Description of the Drawings

[0020] The features and advantages of the present utility model will be clearly understood through the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as a limitation to the present utility model, where:

[0021] Figure 1 A three-dimensional schematic diagram showing an exemplary drainage device according to the present utility model.

[0022] Figure 2 Showing Figure 1 An external three-dimensional schematic diagram of the drainage tube of the shown drainage device.

[0023] Figure 3 A cross-sectional schematic diagram showing the end of the drainage device.

[0024] Figure 4 A disassembled schematic diagram showing the end of the drainage device, where the end is removed to show the internal chamber of the drainage tube.

[0025] Figure 5 A partial three-dimensional schematic diagram showing the support body. Detailed Description of the Embodiment

[0026] The following is a specific embodiment to describe the drainage device of the present utility model. It should be noted that although in this specific embodiment, the intracranial pressure monitoring and craniocerebral drainage device is taken as an example for illustration, those skilled in the art can understand that the concept of the present utility model can also be applied to drainage devices of other parts and types. Moreover, in the following detailed description, many specific details are elaborated in an extremely specific and detailed manner to provide a comprehensive understanding of the embodiment. However, it should be understood that one or more other embodiments can also be implemented without these specific details. Although the structure of the specific craniocerebral drainage device is shown in the drawings and described below in conjunction with the drawings, these structures are only examples to better introduce the concept of the present utility model. It should be understood that the present utility model is not limited to the specific embodiments introduced. On the contrary, the present utility model can be implemented by considering any combination of the features and elements described (and not described) in the text or shown (and not shown) in the drawings.

[0027] The craniocerebral drainage device according to this embodiment of the present utility model includes a drainage tube 1. As Figure 1 shown, as Figure 1 , 2 shown, the drainage tube 1 includes a distal end 11 (also referred to as the distal) adapted to be inserted into the patient's intracranial cavity and an end portion 18 opposite to the distal end 11. A Luer connector 19 can be provided at the end portion 18 to connect to, for example, a drainage bag. As can be seen in the cross-sectional view of Figure 3 , a first cavity 12 is formed inside the drainage tube 1, and an opening 13 communicating with the first cavity 12 is formed on the wall of the drainage tube 1 at the distal end 11. During the drainage process, the liquid outside the drainage tube 1, such as cerebrospinal fluid, enters the first cavity 12 through the opening 13 and is drawn out through the end portion 18. As Figure 4 shown, the support assembly includes a support body 14 and a tracer member 16 provided on the support body 14. Since the drainage tube 1 is usually made of a soft material such as silicone, it is difficult for doctors to implant the distal end of the drainage tube into the deep part of the ventricle during the implantation process. However, the support body 14 (also referred to as the implantation assistance needle) in this embodiment has a certain stiffness, for example, it is made of stainless steel material, and it is arranged in the second cavity 15 of the drainage tube 1 and supports the drainage tube 1 during the process of implanting the drainage tube 1 into the intracranial cavity to assist in the implantation. As Figure 4 , 5 shown, a recess 161 for accommodating the tracer member 16 is formed on the support body 14. The craniocerebral drainage device may further include a tracer member 16, which is accommodated in the recess 161, and the support assembly further includes a sleeve provided outside the support body 14 and covering the support body 14 and the tracer member 16.

[0028] The tracer member 16 is, for example, an electromagnetic sensor, as Figure 4 , 5As shown, an electromagnetic sensor is arranged at the end (or head) of the support body 14. Specifically, a portion of the material is removed from the head of the support body 14 to form a recess 161, and the electromagnetic sensor is installed. A wiring groove 162 is opened along the axial direction on the outer surface of the support body 14 to bury the wire of the sensor. An insulating heat shrink tube (not shown in the figure) is installed on the outside of the support body 14, so that the entire support assembly can be formed into a whole and arranged in the second cavity 15.

[0029] In the present invention, since the tracer component 16 is provided, the tracer component 16 can be tracked by a tracking device such as an electromagnetic navigation device to obtain the real-time positioning of the tracer component 16, so that the position of the entire cranial and cerebral drainage device, especially the end of the drainage tube 1, can be known. Therefore, the cranial and cerebral drainage device of the present invention can be used for intraoperative navigation, so that the doctor can perform preoperative implantation path planning of the implantation surgery on the preoperative image (such as MRI image) and implant the cranial and cerebral drainage device under real-time intraoperative navigation, which not only improves the placement accuracy of the cranial and cerebral drainage device, but also the meticulous preoperative path planning can avoid damage to important neural units in the ventricles.

[0030] Since the tracer member 16 is integrated on the support body 14, the external dimensions of the conventional drainage tube are not changed, and no additional patient incision is added. In addition, the exterior of the support assembly is covered by a sleeve and integrated into an integral piece and arranged in the second cavity 15, making the drainage device more compact, small in size, and easy to manufacture and assemble.

[0031] The drainage device in this embodiment is an intracranial pressure monitoring and cranial brain drainage device, that is, the drainage device may also include a pressure sensing device 10 for intracranial pressure monitoring. A third cavity 17 is also formed in the drainage tube 1, and the pressure sensing device is arranged in the third cavity 17 and exposed from the third cavity 17 at the end 11 to measure the pressure in the external environment near the end 11. Once the drainage device is implanted, the pressure sensing device 10 can be used to monitor the pressure in the ventricle. The monitoring can be performed continuously or at a desired frequency to detect the pressure, thereby preventing the danger and damage caused by excessive intracranial pressure in the patient.

[0032] In this specific embodiment of the present invention, Figure 4 As shown, the second cavity 15 and the third cavity 17 of the drainage tube 1 are formed on both sides of the first cavity 12. This method can avoid electromagnetic interference between the pressure sensing device 10 and the tracing member 16 (such as an electromagnetic sensor) as much as possible. Figure 4As shown, the wall of the first cavity 12 close to the second cavity 15 and the third cavity 17 is an arc-shaped wall 121. The first cavity 12 is defined by two arc-shaped walls 121 and sector-shaped walls 122 that connect the two arc-shaped walls 121 at both ends of the two arc-shaped walls 121. The opening 13 leads from the two sector-shaped walls 122 to the outer surface of the drainage tube 1. Such an arrangement of the first cavity 12, the second cavity 15, and the third cavity 17 enables the cross-sectional area of the first cavity 12 to be maximized as much as possible, and drainage can be more effective.

[0033] According to another aspect of the present invention, there is also provided a system capable of navigating the implantation surgery of the drainage device. The system includes a control device (such as a computer) and the drainage device described in each example of the present invention. The control device is further configured to be suitable for preoperative planning and intraoperative navigation of the implantation surgery. Since the system can navigate the implantation surgery of the drainage device and can perform detailed planning before the operation, the implantation of the drainage device is more accurate, the implantation deviation is reduced, the damage to the patient's brain tissue is reduced, the success rate of the operation is improved, and it is more conducive to cerebrospinal fluid drainage and intracranial pressure monitoring. The system may further include a display device. The position of the identifier representing the end of the current drainage tube on the registered patient image is displayed on the display device, and the identifier changes position as the drainage device moves. The operator can know the position of the drainage tube (such as reaching a certain part of the brain tissue) by viewing the display device without having to guess the position of the drainage tube, so as to guide the operator's implantation and surgical operations during the operation. Exemplarily, the above control device can be a general computer, a special computer, an embedded processor, or any other suitable programmable data processing device such as a single-chip microcomputer or a chip. The control device may include a processor and a memory for storing programs. However, it may also only include a processor. In this case, the processor may be attached to a memory storing the program. In other words, the control device includes at least a processor. The control device (or the processor) and the display device can be integrated into one body or can be separately provided.

[0034] For those skilled in the art, various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the present invention. Based on the practice of the present invention disclosed in this specification, other embodiments of the present invention will be obvious to those skilled in the art. This specification and the examples disclosed therein should be considered illustrative only, and the true scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage device, characterized in that: The drainage device comprises: A drainage tube (1), the drainage tube (1) comprising a terminal end (11) suitable for being inserted into a patient's body, wherein a first cavity (12) and a second cavity (15) are formed in the drainage tube (1), wherein an opening (13) communicating with the first cavity (12) is formed on a wall of the drainage tube (1) at the terminal end (11); and A support assembly, the support assembly comprising: a support body (14), which is arranged in the second cavity (15) of the drainage tube (1) and supports the drainage tube (1) during the process of implanting the drainage tube (1) in the body; and A tracer member (16), wherein a recess (161) for accommodating the tracer member (16) is formed on the support body (14); and the support assembly further comprises a sleeve arranged outside the support body (14) and covering the support body (14) and the tracer member (16).

2. The drainage device according to claim 1, characterized in that: The drainage device is a cranial drainage device, and also includes a pressure sensing device (10) for monitoring intracranial pressure; wherein a third cavity (17) is also formed in the drainage tube (1), and the pressure sensing device (10) is arranged in the third cavity (17) and exposed from the third cavity (17) at the end (11) to measure the pressure in the external environment near the end (11).

3. The drainage device according to claim 2, characterized in that: The second cavity (15) and the third cavity (17) are formed on both sides of the first cavity (12).

4. The drainage device according to claim 3, characterized in that: The wall of the first cavity (12) close to the second cavity (15) and the third cavity (17) is an arc-shaped wall (121), and the first cavity (12) is defined by two arc-shaped walls (121) and fan-shaped walls (122) respectively connecting the two arc-shaped walls (121) at both ends of the two arc-shaped walls (121), wherein the opening (13) passes from the two fan-shaped walls (122) to the outer surface of the drainage tube (1).

5. The drainage device according to claim 1, characterized in that: A groove (162) for accommodating a wire of the tracing member (16) is also formed on the support body (14), wherein the sleeve also covers the wire.

6. The drainage device according to claim 5, characterized in that: The tracing member (16) is an electromagnetic sensor.

7. The drainage device according to claim 1, characterized in that: The sleeve is a heat shrinkable tube.

8. The drainage device according to claim 7, characterized in that: The sleeve is an insulating tube.

9. The drainage device according to any one of claims 1 to 8, characterized in that: Further included is a tracking device configured to track the tracer member (16).

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