Visual external ventricular puncture device and drainage device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a visual external ventricular puncture device and drainage device.The puncture device comprises a puncture part, a drainage part and a holding part which are sequentially arranged, an inner drainage cavity and a puncture cavity are formed in the drainage part, an outer drainage cavity is formed in the holding part, the outer drainage cavity is communicated with the inner drainage cavity, and the outer drainage cavity is communicated with the puncture cavity. The puncture part is installed in the puncture cavity, the end, away from the holding part, of the puncture part protrudes out of the end, away from the holding part, of the drainage part, the end, protruding out of the drainage part, of the puncture part is of a transparent tip structure, a micro camera is installed in the tip structure, the puncture device further comprises a display screen, and the micro camera is in communication connection with the display screen; a plurality of drainage holes are formed in the side wall, close to the puncture part end, of the drainage part and communicate with the inner drainage cavity; the puncture part is made of elastomer materials, and the drainage part is made of soft materials. Visualization can be achieved in the puncture process, and the blind puncture phenomenon is avoided; and accurate positioning can be achieved, and the drainage effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically to a visualized extraventricular puncture device and a drainage device. Background Art

[0002] Extraventricular drainage (EVD) is one of the most common surgical techniques in neurosurgery. It can quickly and effectively relieve intracranial hypertension, dredge cerebrospinal fluid circulation, drain bloody cerebrospinal fluid, and reduce ventricular stimulation. For patients with fatal hydrocephalus and intraventricular hemorrhage, EVD is a life-saving measure. However, since the anatomy of the ventricles is often changed by certain underlying diseases, the placement path of the catheter needs to be adjusted individually according to CT. If the ventricles are small, puncture is often difficult without the help of stereotactic technology. At present, the placement of EVD drainage tubes is mostly a "blind operation" based on external anatomical landmarks. During the placement of the drainage device, medical staff have no way to observe the patient's internal conditions, so the insertion depth of the drainage device depends entirely on the experience of the medical staff. Not only is it impossible to know whether the puncture needle has accurately reached the site of the effusion, but some patients also need to insert the puncture drainage device multiple times, which brings great pain to the patients. Therefore, a new visual extraventricular drainage system is urgently needed to help neurosurgery medical staff accurately lock the bleeding location for accurate drainage.

[0003] The EVD system is generally composed of an internal drainage tube and an external drainage device. An ideal external drainage device should have the characteristics of safe and reasonable design, simple installation and use, soft material, good tissue compatibility, and less complications. According to statistics, abnormal blood vessels at the puncture site during the insertion of an external ventricular drainage device and excessive diameter of the inserted tube are related factors that increase the risk of bleeding in patients. The existing patent discloses a visual ventricular and subdural external drainage system, which includes a visual ventricular puncture system and a drainage system. By setting a camera at the end of the puncture guide core, the blind puncture phenomenon is avoided. However, this technical solution is to first penetrate the brain through the puncture guide core and then insert the drainage tube from the middle of the puncture guide core. Thereafter, the puncture guide core is pulled out to complete the entire puncture and drainage process. After the puncture of the puncture guide core is completed, the withdrawal operation must be performed. During the withdrawal process, secondary damage to the patient's brain tissue may be caused during the withdrawal process. Moreover, during the drainage process after the puncture guide core is withdrawn, the patient's movement may cause the drainage tube to shift, but the outside world cannot know this. In addition, due to inaccurate drainage positioning, the expected treatment effect cannot be achieved in the end. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a visualized extraventricular puncture device, which can achieve visualization during the puncture process to avoid blind puncture; it can also drain the cerebral effusion during puncture, and can achieve real-time monitoring during the entire drainage process, adjust the position of the puncture device in the brain at any time according to the location of the bleeding point, and then achieve precise positioning, thereby improving the drainage effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provided is a visualized extraventricular puncture device, comprising a puncture portion, a drainage portion, and a gripping portion which are arranged in sequence, wherein an inner drainage cavity and a puncture cavity are respectively arranged in the drainage portion, an outer drainage cavity is arranged in the gripping portion, and the outer drainage cavity is communicated with the inner drainage cavity, the puncture portion is installed in the puncture cavity, and the end of the puncture portion away from the gripping portion protrudes from the end of the drainage portion away from the gripping portion, the end of the puncture portion protruding from the drainage portion is a transparent tip structure, a micro camera is installed in the tip structure, the puncture device also comprises a display screen, and the micro camera is communicatively connected with the display screen; a plurality of drainage holes are opened on the side wall of the drainage portion close to the puncture portion end, and the drainage holes are communicated with the inner drainage cavity; the puncture portion is made of an elastomeric material, and the drainage portion is made of a soft material.

[0007] The visualized extraventricular puncture device of the utility model is guided by a micro camera during the puncture process. The positions of the puncture part and the drainage part can be intuitively observed using a display screen, and the drainage part can be accurately placed in the ventricle (or hematoma). The position of the drainage part can be adjusted according to the camera process of the puncture path, greatly improving the accuracy of the puncture and the efficiency of the placement of the drainage part. Specifically, the gripping part can be convenient for holding during puncture; the tip structure is arranged at the end of the puncture part to facilitate puncture, and the tip structure is arranged to be transparent to prevent visual obstruction to the micro camera; the micro camera is arranged at the tip structure to visualize the puncture process; the puncture part of the elastomeric material is wrapped by the drainage part of the soft material, but the end of the puncture part protrudes from the drainage part, and the elastomeric material and the tip structure of the puncture part can facilitate puncture and meet the hardness requirements during puncture, and can also facilitate subsequent retention without causing the burden of the retention state; the soft material of the drainage part can protect the brain tissue to a certain extent during puncture and retention; when using the puncture After the puncture part accurately locates the bleeding point, the cerebral fluid enters the inner drainage cavity of the drainage part from the drainage hole and flows out through the outer drainage cavity of the gripping part; the puncture part and the drainage part are arranged in one piece, so that the puncture part does not need to be withdrawn from the brain after the puncture is completed, but remains in the brain throughout the drainage process, avoiding secondary damage to the brain tissue during the withdrawal of the puncture guide core as in the prior art; moreover, since the puncture part with a micro camera is always present, during the entire drainage process, even if the drainage part is displaced due to the movement of the patient, we can know it in time and adjust the position of the drainage part to perform accurate drainage, thereby improving the hematoma clearance rate and enhancing the treatment effect. The integrated puncture part and drainage part also have an advantage that the overall outer diameter can be smaller, reducing the probability of secondary damage to the patient's brain tissue and reducing the risk of secondary bleeding in the patient.

[0008] Preferably, the puncture cavity and the internal drainage cavity are not connected to each other, and the puncture cavity and the internal drainage cavity are arranged in parallel or the puncture cavity is arranged in the internal drainage cavity.

[0009] Preferably, a scale is also provided on the outer wall of the drainage portion.

[0010] Preferably, the soft material used in the drainage part is one of silicone, polyvinyl chloride PVC, and polyurethane; the elastomeric material used in the puncture part is one of thermoplastic elastomer TPE, thermoplastic rubber TPR, thermoplastic polyolefin TPO, thermoplastic vulcanized rubber TPV, thermoplastic polyurethane elastomer rubber TPU, and thermoplastic polyester elastomer TPEE.

[0011] Preferably, the outer diameter of the drainage portion is less than 1 cm.

[0012] Preferably, a micro light-emitting module for lighting is also installed inside the tip structure or on the outer edge of the tip structure.

[0013] The utility model also provides a drainage device, comprising the above-mentioned visualized extraventricular puncture device, a drainage tube, and a liquid collection device, wherein one end of the drainage tube is connected to the puncture device, and the other end is connected to the liquid collection device.

[0014] Preferably, it also includes a flow monitoring device, which includes an ultrasonic flow meter, a flow velocity sensing sleeve, and an ultrasonic sensor. The flow velocity sensing sleeve is connected to the drainage tube, and the ultrasonic flow meter is connected to the flow velocity sensing sleeve through the ultrasonic sensor.

[0015] Preferably, it further comprises a flow regulating valve, which is located between the liquid collecting device and the puncture device and is connected to the drainage tube.

[0016] Preferably, it further comprises a locking joint, and the puncture device is connected to the drainage tube via the locking joint.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The puncture device of the utility model has a scientific structure and reasonable design, which solves the technical problem that puncture cannot be visualized in neurosurgery external ventricular drainage. It can achieve ventricular puncture under the real-time guidance of the high-precision micro-camera built into the puncture part, accurately lock the bleeding or trauma drainage position, greatly improve the success rate of the operation, and even less experienced medical personnel can accurately locate the site of effusion or bleeding. The guide part is made of sterile anti-contamination material and has a small diameter, which effectively reduces secondary damage to the patient's brain tissue.

[0019] (2) Currently available visualized puncture and drainage devices usually expand the channel to a working diameter (usually 1.5 cm to 2.0 cm), which is relatively rough and can easily cause contusion of adjacent brain tissue. The new puncture device only requires one step to puncture the brain tissue, and there is no need to withdraw the puncture part from the brain, avoiding multiple adjustments and expansions or multiple touches on the puncture channel, which can reduce the damage to the surrounding brain tissue caused by multiple expansions of the surgical channel, thereby reducing the probability of contusion of the surrounding brain tissue.

[0020] (3) Since the puncture site with the micro camera is always present, during the entire drainage process, even if the drainage site is displaced due to patient movement, we can be informed in time and adjust the position of the drainage site to perform precise drainage, thereby improving the hematoma clearance rate and enhancing the treatment effect.

[0021] (4) The ultrasonic flow monitoring device of the drainage device can monitor the liquid flow rate at all times so as to adjust the flow rate in time through the flow regulating valve to prevent excessive drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance structure of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present utility model;

[0024] Figure 3 This is a schematic diagram of the use scenario of Example 1 of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of Embodiment 2 of the present utility model;

[0026] Figure 5 This is a schematic diagram of the appearance structure of Embodiment 3 of the present utility model;

[0027] Figure 6 This is a schematic diagram of the usage scenario of Example 3 of the utility model.

[0028] The illustrations are as follows:

[0029] 1. Puncture part; 11. Tip structure; 12. Miniature camera; 2. Drainage part; 21. Internal drainage cavity; 22. Puncture cavity; 23. Drainage hole; 24. Scale; 3. Grip; 31. External drainage cavity; 101. Puncture device; 102. Drainage tube; 103. Liquid collecting device; 104. Flow monitoring device; 1041. Ultrasonic flowmeter; 1042. Flow rate sensing sleeve; 1043. Ultrasonic sensor; 105. Flow regulating valve; 106. Locking joint; 107. Brain. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Example 1

[0033] like Figures 1 to 3 The first embodiment of a visualized extraventricular puncture device of the utility model is shown, comprising a puncture portion 1, a drainage portion 2, and a grip portion 3 which are arranged in sequence, wherein an inner drainage cavity 21 and a puncture cavity 22 are respectively provided in the drainage portion 2, an outer drainage cavity 31 is provided in the grip portion 3, and the outer drainage cavity 31 is communicated with the inner drainage cavity 21, the puncture portion 1 is installed in the puncture cavity 22, and the end of the puncture portion 1 away from the grip portion 3 protrudes from the end of the drainage portion 2 away from the grip portion 3, the end of the puncture portion 1 protruding from the drainage portion 2 is a transparent tip structure 11, a miniature camera 12 is installed in the tip structure 11, the puncture device 101 also comprises a display screen, and the miniature camera 12 is communicatively connected with the display screen; a plurality of drainage holes 23 are provided on the side wall of the drainage portion 2 close to the puncture portion 1 end, and the drainage holes 23 are communicated with the inner drainage cavity 21; the puncture portion 1 is made of an elastomeric material, and the drainage portion 2 is made of a soft material.

[0034] Preferably, handles for easy gripping are provided on both sides of the gripping portion 3. In the present embodiment, the micro camera 12 may refer to a camera device including a lens, an image processor, and a signal transmitter, which uses a lens to capture images and transmits them to a display screen using a signal transmitter after being processed by an image processor, so that the display screen can intuitively know the situation of the brain 107 during puncture. Of course, within the scope of knowledge of those skilled in the art, the micro camera 12 may also be replaced by a simple lens, and the image processor may be externally or internally placed in the gripping portion 3, but the lens and the image processor need to be electrically connected, which can be achieved by passing a wire through the puncture cavity 22. With such a configuration, the volume of the puncture portion 1 protruding from the drainage portion 2 can be made smaller, which is conducive to reducing the volume of the puncture device and reducing the risk of secondary damage to the patient's brain 107 during the puncture process.

[0035] The transparent material used for the tip structure 11 can be an elastomeric transparent material. For example, TPU is a polymer material with good biocompatibility and good mechanical properties, which is beneficial to improving the reliability of the built-in micro camera 12. Similar materials include thermoplastic elastomer TPE, thermoplastic rubber TPR, thermoplastic polyolefin TPO, thermoplastic vulcanized rubber TPV, and thermoplastic polyester elastomer TPEE.

[0036] Preferably, the micro camera 12 is a Micro ScoutCam TM The 6.5Lum S high-tech micro camera has 6 integrated LEDs inside, which can illuminate and record in very narrow and dark spaces. It is completely sterile and waterproof.

[0037] As an embodiment of the present invention, the puncture cavity 22 and the inner drainage cavity 21 are not connected to each other, and the puncture cavity 22 is arranged in the inner drainage cavity 21. The drainage portion 2 is hollow, and the entire inner drainage cavity 21 is arranged in the hollow cavity of the drainage portion 2, and the puncture cavity 22 passes through the inner drainage cavity 21, which can facilitate the setting of the puncture portion 1, so that the tip structure 11 at the end of the puncture portion 1 can be better connected and fitted with the drainage portion 2, and it is also convenient to set the drainage hole 23, so that the drainage hole 23 can be set in different directions of the drainage portion 2, which is conducive to the accumulation of fluid at various positions near the drainage portion 2 to flow into the inner drainage cavity 21.

[0038] As an embodiment of the present invention, a scale 24 is also provided on the outer wall of the drainage portion 2. The setting of the scale 24 can conveniently record the depth of ventricle puncture.

[0039] As an embodiment of the utility model, the soft material used in the drainage part 2 is one of silicone, polyvinyl chloride PVC, and polyurethane; the elastomer material used in the puncture part 1 is one of thermoplastic elastomer TPE, thermoplastic rubber TPR, thermoplastic polyolefin TPO, thermoplastic vulcanized rubber TPV, thermoplastic polyurethane elastomer rubber TPU, and thermoplastic polyester elastomer TPEE. The above materials have high-quality performance and can meet the use requirements.

[0040] As an embodiment of the present invention, the outer diameter of the drainage part 2 is less than 1 cm. The smaller the puncture wound, the less secondary damage to the brain tissue. The split puncture guide core and drainage cannula in the prior art generally have a relatively large outer diameter. The present invention integrates the puncture part 1 and the drainage part 2, and the integration of the two can make the overall volume smaller.

[0041] As an embodiment of the present invention, a micro light-emitting module for lighting is also installed inside the tip structure 11 or on the outer edge of the tip structure 11. The micro light-emitting module can be used for lighting. When the selected micro camera 12 does not have a lighting function, the micro light-emitting module can be used for lighting to improve the clarity of the micro camera 12.

[0042] Example 2

[0043] like Figure 4 The second embodiment of the visualized extraventricular puncture device of the utility model is shown. This embodiment is similar to the first embodiment, except that the puncture cavity 22 and the internal drainage cavity 21 are not connected to each other, and the puncture cavity 22 and the internal drainage cavity 21 are arranged in parallel.

[0044] The puncture cavity 22 and the internal drainage cavity 21 are arranged side by side in the drainage part 2, and the two are not connected to each other, thereby avoiding contamination of the micro camera 12 and ensuring the use function of the micro camera 12 during use; on the other hand, it can also ensure the cleanliness and sterile environment of the internal drainage cavity 21, avoiding the risk of infection brought to the brain 107 by the micro camera 12.

[0045] Example 3

[0046] like Figure 5 and Figure 6 The figure shows an embodiment of a drainage device of the utility model, including the above-mentioned visualized extraventricular puncture device 101, a drainage tube 102, and a fluid collection device 103. One end of the drainage tube 102 is connected to the puncture device 101, and the other end is connected to the fluid collection device 103. The drainage device in this embodiment integrates the puncture and drainage functions in the brain 107 with the drainage part 2 outside the brain 107. The puncture device 101 in the previous text emphasizes the drainage in the brain 107, while the drainage device in this embodiment also includes the drainage part 2 outside the brain 107, which mainly drains the cerebrospinal fluid drained from the brain 107 to the fluid collection device 103 for temporary storage through the drainage tube 102.

[0047] The liquid collecting device 103 is a liquid collecting bottle. Preferably, the liquid collecting device 103 is also connected to a liquid catheter. The liquid collecting bottle is divided into two parts, upper and lower. After the brain 107 effusion is collected into the liquid collecting bottle through the drainage tube 102, when a certain collection volume is reached, it will flow out through the other liquid catheter port connected to the liquid collecting bottle through the drainage tube. The drainage tube 102 can be made of any of silicone, polyvinyl chloride PVC, polyurethane and silicone impregnated with antibiotics. They each have their own characteristics: silicone tubes are soft, compliant, elastic and bendable, and can minimize tissue damage caused by placement, catheter treatment and removal operations; polyvinyl chloride and polyurethane tubes are harder and less compliant than silicone tubes, but are cheap; silicone catheters impregnated with antibiotics such as clindamycin and rifampicin have been shown to significantly reduce the positive rate of cerebrospinal fluid bacterial culture.

[0048] As an embodiment of the present utility model, it also includes a flow monitoring device 104, which includes an ultrasonic flow meter 1041, a flow velocity sensing sleeve 1042, and an ultrasonic sensor 1043. The flow velocity sensing sleeve 1042 is connected to the drainage tube 102, and the ultrasonic flow meter 1041 is connected to the flow velocity sensing sleeve 1042 through the ultrasonic sensor 1043.

[0049] The ultrasonic flow meter 1041 uses low voltage, multi-pulse time difference principle, high-precision and ultra-stable dual-balance signal detection and transmission, differential reception digital detection technology, and uses ultrasonic sensor 1043 to measure the sound wave transmission time of the flow velocity sensing sleeve 1042 in the downstream and upstream directions of the flowing liquid, and calculates the flow velocity based on the time difference. It has the characteristics of good stability, small zero drift, high measurement accuracy, wide range ratio and strong anti-interference.

[0050] As an embodiment of the present invention, it further includes a flow regulating valve 105 , which is located between the liquid collecting device 103 and the puncture device 101 and is connected to the drainage tube 102 .

[0051] The flow regulating valve 105 plays a role in flow control. The flow regulating valve 105 timely adjusts the liquid flow and speed according to the flow rate feedback monitored by the flow monitoring device 104 to prevent excessive drainage.

[0052] As an embodiment of the present invention, a locking joint 106 is further included, and the puncture device 101 is connected to the drainage tube 102 through the locking joint 106. The drainage tube 102 is connected in sections through the locking joint 106, which facilitates the connection between the gripping portion 3 of the puncture device 101 and the drainage tube 102.

[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A visual extraventricular puncture device, characterized in that: The invention comprises a puncture part (1), a drainage part (2), and a gripping part (3) which are arranged in sequence, wherein the drainage part (2) is provided with an inner drainage cavity (21) and a puncture cavity (22) respectively, and the gripping part (3) is provided with an outer drainage cavity (31), and the outer drainage cavity (31) is communicated with the inner drainage cavity (21), the puncture part (1) is installed in the puncture cavity (22), and the end of the puncture part (1) away from the gripping part (3) protrudes from the end of the drainage part (2) away from the gripping part (3), and the puncture part (1) protrudes The end of the drainage portion (2) is a transparent tip structure (11), a micro camera (12) is installed in the tip structure (11), and the puncture device (101) also includes a display screen, and the micro camera (12) is connected to the display screen for communication; a side wall of the drainage portion (2) close to the puncture portion (1) is provided with a plurality of drainage holes (23), and the drainage holes (23) are connected to the inner drainage cavity (21); the puncture portion (1) is made of an elastomeric material, and the drainage portion (2) is made of a soft material.

2. The visualized extraventricular puncture device according to claim 1, characterized in that: The puncture cavity (22) and the internal drainage cavity (21) are not connected to each other; the puncture cavity (22) and the internal drainage cavity (21) are arranged in parallel or the puncture cavity (22) is arranged in the internal drainage cavity (21).

3. The visualized extraventricular puncture device according to claim 1 or 2, characterized in that: A scale (24) is also provided on the outer wall of the drainage portion (2).

4. The visualized extraventricular puncture device according to claim 3, characterized in that: The soft material used in the drainage part (2) is one of silicone, polyvinyl chloride (PVC), and polyurethane; the elastomeric material used in the puncture part (1) is one of thermoplastic elastomer TPE, thermoplastic rubber TPR, thermoplastic polyolefin TPO, thermoplastic vulcanized rubber TPV, thermoplastic polyurethane elastomer rubber TPU, and thermoplastic polyester elastomer TPEE.

5. The visualized extraventricular puncture device according to claim 1, characterized in that: The outer diameter of the drainage portion (2) is less than 1 cm.

6. The visualized extraventricular puncture device according to claim 1, characterized in that: A micro light-emitting module for lighting is also installed inside the tip structure (11) or on the outer edge of the tip structure (11).

7. A drainage device, characterized in that: It comprises a visualized extraventricular puncture device (101) as described in any one of claims 1 to 6, a drainage tube (102), and a fluid collection device (103), wherein one end of the drainage tube (102) is connected to the puncture device (101), and the other end is connected to the fluid collection device (103).

8. The drainage device according to claim 7, characterized in that: It also includes a flow monitoring device (104), the flow monitoring device (104) including an ultrasonic flow meter (1041), a flow velocity sensing sleeve (1042), and an ultrasonic sensor (1043), the flow velocity sensing sleeve (1042) being connected to the drainage tube (102), and the ultrasonic flow meter (1041) being connected to the flow velocity sensing sleeve (1042) via the ultrasonic sensor (1043).

9. The drainage device according to claim 8, characterized in that: It also includes a flow regulating valve (105), which is located between the liquid collecting device (103) and the puncture device (101) and is connected to the drainage tube (102).

10. The drainage device according to any one of claims 7 to 9, characterized in that: It also includes a locking connector (106), and the puncture device (101) is connected to the drainage tube (102) through the locking connector (106).

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