Visual external ventricular drainage puncture needle core and disposable drainage cannula
By using visualized outdoor drainage puncture needle core and disposable drainage cannula in outdoor drainage surgery, combining probe rod, camera and blocking wing, the problem of mismatch between the needle core and the drainage cannula in the prior art is solved, and the problem of mismatch between the needle core and the drainage cannula in the existing technology is achieved. Safe and visual drainage operations reduce operation risks and the possibility of poor drainage.
Patent Information
- Application Number
- CN202420495735.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-14
AI Technical Summary
In existing extraventricular drainage, the two-dimensional images provided by the fluoroscopy instrument cannot accurately determine the preset route, resulting in the needle core and drainage cannula that may not match during the insertion process, increasing the risk of operation and the possibility of poor drainage.
A visualized outdoor drainage puncture needle core is designed, equipped with a probe rod, camera base, lens and optical fiber, combining the shrinking part of the disposable drainage cannula and the barrier wing to ensure the close cooperation and visualization of the needle core and the drainage cannula. operate.
It is possible to clearly set the best position of the drainage tube under navigation without navigation, avoiding puncture tract bleeding and poor drainage caused by blind penetration, ensuring synchronous operation of the needle core and the drainage casing, and reducing operation risks.
Smart Images
Figure CN222286038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of brain surgery instruments, in particular to a visualized ventricular external drainage puncture needle core and a disposable drainage sleeve. Background Art
[0002] Extraventricular drainage is an important method for rescuing severe intracranial hemorrhage, intracranial hypertension, brain herniation, obstructive hydrocephalus and other serious diseases. A hole is made in the skull and a drainage tube is inserted into the site where the fluid is formed. Drainage tubes are generally divided into hard and soft types. Soft drainage tubes cause less damage to the brain. In the prior art, a needle core is generally inserted into a soft cannula to support its strength. Under the navigation of a fluoroscopic device, the needle is inserted along a preset route. It is also better to model the brain through a computer and pre-set the insertion route. After the soft cannula reaches the preset position, the needle core is pulled out and then the drainage bottle is connected or a drainage channel is set.
[0003] However, the brain is the most delicate organ of the human body. The current fluoroscopic instruments alone cannot fully determine its true condition. Moreover, the fluoroscopic instruments can only provide two-dimensional images and cannot accurately and completely judge the full situation of the preset route. Therefore, there are certain risks. With the sophistication and miniaturization of electronic equipment, visual drainage has become possible. However, due to the need to cooperate with the needle core, the soft cannula is generally blind and has drainage holes on the side. If the opening is directly opened at the front end of the soft cannula to provide a field of view for the camera, it may cause the needle core to be unable to be fixed, and it may be out of sync with the drainage cannula when advancing and retreating, bringing unnecessary risks. Utility Model Content
[0004] According to one aspect of the present application, a visualized external ventricular drainage puncture needle core is provided, comprising a probe rod, a camera seat is provided at the top end of the probe rod, a lens is covered at the working end of the camera seat, a pinhole camera and an optical fiber for lighting are integrated in the camera seat; the optical fiber and the data line of the pinhole camera are arranged along the probe rod.
[0005] Furthermore, the probe rod is provided with a blocking wing for fixing the drainage sleeve.
[0006] Furthermore, the blocking wing comprises two wings hinged on the probe rod, the two wings are meshed by meshing teeth, the wings are provided with wing handles, at least one wing handle is provided with a pull wire, and the pull wire is arranged along the probe rod.
[0007] Furthermore, an outer sleeve is provided; a needle core handle is provided at the end of the probe rod, the outer sleeve is sleeved outside the probe rod, and one end is fixedly connected to the camera seat, and the other end is connected to the needle core handle, the outer sleeve is opened at a position corresponding to the wing to ensure that the wing can expose the outer sleeve, the data cable, optical fiber and pull wire are all arranged in the outer sleeve, and the ends extend out from the opening of the needle core handle.
[0008] A disposable drainage cannula is used in conjunction with any one of the visualized extraventricular drainage puncture needle cores in the above technical solutions, comprising a silicone tube body, a reduced diameter portion is provided at the head end of the silicone tube body, and a plurality of drainage holes are provided on the silicone tube body near the head end.
[0009] Furthermore, the thickness of the reduced diameter portion becomes thinner in the direction toward the axis.
[0010] The technical solution of this application redesigns the needle core and drainage cannula structure, making visual operation a reality, effectively avoiding puncture tract bleeding caused by blind puncture, and can clearly identify the drainage end of the drainage tube, and place it in the best position without navigation guidance to avoid poor drainage of the drainage tube. The head of the drainage cannula is set to enable visualization and prevent the needle core from falling out or detaching. In some embodiments, the blocking wing further ensures the close fit between the needle core and the drainage cannula. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0012] Figure 1 A schematic diagram of a visual external ventricular drainage puncture system for this application;
[0013] Figure 2 This is a schematic diagram of the combination of the puncture needle core and the drainage cannula in this application;
[0014] Figure 3 Schematic diagram of drainage cannula in this application;
[0015] Figure 4 for Figure 3 A partial enlarged view of part a;
[0016] Figure 5 Schematic diagram of the structure of the puncture needle core
[0017] Figure 6 This is a schematic diagram of the structure of the blocking wing in the technical solution of this application.
[0018] In the figure: 1. Visualized extraventricular drainage puncture system; 11. Drainage cannula; 111. Drainage hole; 112. Neck constriction; 12. Puncture needle core; 121. Lens; 122. Needle core handle; 123. Camera seat; 124. Data cable; 125. Optical fiber; 126. Probe rod; 127 Pull wire; 128. Blocking wing; 1281. Wing; 1282. Meshing teeth; 1283 Wing handle; 2. Signal cable. DETAILED DESCRIPTION
[0019] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.
[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0023] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0024] Example 1
[0025] A visualized extraventricular drainage puncture system comprises a puncture needle core 12 and a drainage cannula 11 which cooperate with each other.
[0026] The puncture needle core 12, i.e., a visualized external ventricular drainage puncture needle core, comprises a supporting probe rod 126. The probe rod 126 is preferably made of a material with high fatigue resistance, such as medical stainless steel, silver-containing alloy, brass or magnesium-aluminum alloy, so that it can be bent into a shape that is conducive to probing into the brain cavity when necessary without being damaged by fatigue.
[0027] A camera seat 123 is provided at the top of the probe rod 126, and a storage space is provided in the camera seat 123. A pinhole camera and an optical fiber 125 for lighting are provided in the storage space. The working end, i.e., the field of view end of the pinhole camera, is covered with a lens 121. The lens 121 can be any one of a wide-angle lens, a magnifying glass or a flat mirror as required. The lighting range of the optical fiber 125 should also match the field of view of the pinhole camera. Preferably, the camera seat 123 and the lens 121 are waterproof and sealed to prevent damage or contamination of internal parts.
[0028] The optical fiber 125 and the data line 124 of the pinhole camera pass through the bottom of the camera seat 123 and extend backward along the probe rod 126 .
[0029] Matching the above scheme is a disposable drainage cannula for use with the puncture needle core 12, including a silicone tube body, a reduced diameter portion 112 is provided at the head end of the silicone tube body, and a plurality of drainage holes 111 are provided on the silicone tube body near the head end. It should be pointed out that the reduced diameter portion 112 refers to the narrowing of the diameter of the silicone tube body at one end (i.e., the head end) where the silicone tube body is inserted into the cranial cavity, so as to prevent the puncture needle core 12 from coming out from there. Obviously, the diameter of the reduced diameter portion 112 should be sufficient to provide sufficient resistance to the puncture needle core 12 and not block too much of the pinhole camera's field of view.
[0030] In some embodiments, the thickness of the reduced diameter portion 112 gradually becomes thinner along the direction toward the axis, that is, the axis direction of the probe rod 126. This arrangement can form a smooth transition layer on the surface of the lens 121 to prevent the protrusion from causing unnecessary damage to the brain tissue.
[0031] When the product of this embodiment is in use, the drainage sleeve 11 is sleeved outside the puncture needle core 12, and the lens 121 is pressed against the reduced diameter portion 112 to form the visualized extraventricular drainage puncture system 1. Similar to the prior art, the diameters of the puncture needle core 12, the lens 121, and the camera seat 123 should be significantly smaller than the drainage sleeve 11. The optical fiber 125 is connected to the light source, and the data cable 124 is connected to the signal cable 2. The situation of the visualized extraventricular drainage puncture system 1 in the puncture direction can be seen on the relevant display device to achieve visualized operation. When withdrawing, the puncture needle core 12 only needs to be gently rotated. When the cerebrospinal fluid invades the drainage sleeve 11, the puncture needle core 12 can be ensured to be smoothly removed.
[0032] Example 2
[0033] The structure of this embodiment is substantially the same as that of the first embodiment, except that a blocking wing 128 for fixing the drainage sleeve 11 is provided on the probe rod 126 .
[0034] The blocking wing 128 includes two wings 1281 respectively hinged on the probe rod 126. The two wings 1281 mesh with each other through meshing teeth 1282 to form a synchronous opening and closing mechanism. This structure is an existing design, such as a compass, etc. This structure is only a better choice. In fact, based on the specific solution of this application, those skilled in the art have the ability and motivation to make more similar mechanisms. The replacement of this mechanism itself should be regarded as equivalent to infringement.
[0035] The wing 1281 is provided with a wing handle 1283 , and at least one wing handle 1283 is provided with a pull wire 127 , and the pull wire 127 is arranged along the probe rod 126 .
[0036] In some embodiments, an outer sleeve (not shown in the drawings) is also provided; a needle core handle 122 is provided at the end of the probe rod 126, the outer sleeve is sleeved outside the probe rod 126, and one end is fixedly connected to the camera seat 123, and the other end is connected to the needle core handle 122, the outer sleeve is opened at a location corresponding to the wing 1281 to ensure that the wing 1281 can be exposed from the outer sleeve, the data line 124, the optical fiber 125 and the pull line 127 are all arranged in the outer sleeve, and the ends extend from the opening provided on the needle core handle 122. The advantage of such a setting is that the integrity is stronger, and it can prevent the exposed parts from causing unnecessary trouble.
[0037] When in use, it is roughly the same as in Example 1, the drainage sleeve 11 is sleeved outside the puncture needle core 12, and the lens 121 is pressed against the reduced diameter portion 112 to form the visualized extraventricular drainage puncture system 1. The difference is that the elasticity of the drainage sleeve 11 itself is utilized to slightly stretch the opened wings 1281 to match the drainage holes 111 on the drainage sleeve 11. It should be pointed out that the circumferential drainage holes 111 are generally not at the same height. At this time, it is only necessary to slightly adjust the length of the wings 1281 and the position of the drainage holes 111 during the design so that they can match smoothly. It should be noted that the wings 1281 should mainly rely on tension to "hang" on the wall of the drainage hole 111. The ends of the wings 1281 should be relatively smooth and should not extend out of the drainage hole 111 to prevent them from becoming protrusions during the insertion process and causing hidden dangers. Accordingly, the opening angle of the wings 1281 should be set as necessary to prevent them from extending out of the drainage hole 111 due to excessive opening. For example, in some embodiments, the angle is limited by the mutual interference of the wing handles 1283. Figure 6 shown.
[0038] The technical solution of this embodiment can more reliably fix the position of the drainage sleeve 11. When it needs to be withdrawn, the wings 1281 can be closed by gently pulling the pull wire 127 to facilitate the withdrawal of the puncture needle core 12.
[0039] The above description is only a preferred embodiment of the utility model, and does not limit the technical scope of the utility model. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model still fall within the scope of the technical solution of the utility model.
Claims
1. A visualized external ventricular drainage puncture needle core, characterized in that: It comprises a probe rod, the top of which is provided with a camera seat, the working end of which is covered with a lens, a pinhole camera and an optical fiber for lighting are integrated in the camera seat; the optical fiber and the data line of the pinhole camera are arranged along the probe rod.
2. A visualized external ventricular drainage puncture needle core as claimed in claim 1, characterized in that: The probe rod is provided with a blocking wing for fixing the drainage sleeve.
3. A visualized external ventricular drainage puncture needle core as claimed in claim 2, characterized in that: The blocking wing comprises two wings hinged on the probe rod, the two wings are meshed by meshing teeth, the wings are provided with wing handles, at least one wing handle is provided with a pull wire, and the pull wire is arranged along the probe rod.
4. A visualized external ventricular drainage puncture needle core as claimed in claim 3, characterized in that: An outer sleeve is also provided; a needle core handle is provided at the end of the probe rod, the outer sleeve is sleeved outside the probe rod, and one end is fixedly connected to the camera seat, and the other end is connected to the needle core handle, the outer sleeve is opened at a position corresponding to the wing to ensure that the wing can expose the outer sleeve, the data line, optical fiber and pull wire are all arranged in the outer sleeve, and the ends extend out from the opening of the needle core handle.
5. A disposable drainage cannula, characterized in that: Used in conjunction with any one of the visualized extraventricular drainage puncture needle cores of claims 1-4, the silicone tube body comprises a silicone tube body, a reduced diameter portion is provided at the head end of the silicone tube body, and a plurality of drainage holes are provided on the silicone tube body near the head end.
6. A disposable drainage cannula as claimed in claim 5, characterized in that: The thickness of the reduced diameter portion becomes thinner along the direction toward the axis.