A multifunctional probe for fetal necropsy

Abstract

The utility model discloses a multifunctional probe for fetus necropsy, the inside of puncture needle tube is provided with advancing support channel, advancing support channel penetrates both ends of puncture needle tube, and support inner core includes core body and the positioning mechanism of setting on core body, and positioning member sets up in the positioning end of core body, and positioning mechanism has contraction state and unfolding positioning state, and the inside of detection inner core forms injection channel, and injection channel is connected with injection connecting structure at control end, and injection channel forms an injection opening at injection end. The utility model provides a multifunctional probe for fetus necropsy, in the use process, through the mutual cooperation of puncture needle tube and support inner core, can prop up the collapsed blood vessel wall, creates good condition for subsequent detection operation, can inject detection material to the inside of blood vessel through detection inner core, observes the flow and distribution of detection material in the blood vessel, can clearly show the blood vessel branch, variation or pathological change.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a multifunctional probe for fetal autopsy. Background Technology

[0002] In medical practice, fetal autopsy is an extremely important procedure for fetuses that have died during the perinatal period, including stillbirths, miscarriages, and terminations of pregnancy for various reasons. Through systematic dissection and examination of the fetal body, the cause of fetal death can be comprehensively analyzed. This process involves multiple stages. First, a detailed external examination is conducted to observe the fetus's appearance for any obvious deformities or injuries. Then, the internal organs are dissected, and the shape, size, and texture of each organ are examined for any abnormalities. During the examination, histopathological examination is also performed, with tissue sections examined to detect subtle lesions. Simultaneously, samples are collected for genetic testing and analysis to identify any potential genetic factors. The routine procedure of fetal autopsy aims to explore the root causes of fetal death from multiple perspectives, providing crucial evidence for clinical diagnosis and subsequent research. In fetal autopsies, vascular examination plays a crucial role, as vascular malformations are a significant manifestation of birth defects, making their accurate detection essential. Examination of fetal blood vessels can effectively validate the results of prenatal imaging and genetic diagnosis. If prenatal examinations suspect vascular malformations in the fetus, vascular examination during fetal autopsy can further clarify the diagnosis, providing invaluable guidance for subsequent pregnancies. This helps doctors and pregnant women better plan their next pregnancy and reduces the risk of similar problems recurring. However, current traditional methods for vascular examination during fetal autopsy have many limitations. Traditional autopsy methods mainly rely on gross anatomical observation and imaging-assisted examinations. When faced with complex vascular malformations or those located in deep tissues, it is difficult to identify these hidden malformations by gross anatomical observation alone. Moreover, traditional probes used for vascular examination have significant defects; they are prone to puncturing the vessel wall during operation, and after fetal death, the blood in the vessels empties, often causing the vessels to collapse. Due to their limited range of functions, traditional probes cannot effectively support the collapsed vessel walls, making it difficult to provide a clear and good field of view for observing the internal condition of the vessels. Furthermore, when there are many subsequent branches in the vessel, traditional probes can only detect the starting point of the vascular malformation, failing to accurately identify the subsequent complex course of the vessels. This seriously affects the judgment and diagnosis of vascular structure and course, and consequently, the comprehensive and accurate assessment of fetal vascular malformations. Utility Model Content

[0003] The purpose of this invention is to provide a multifunctional probe for fetal autopsy to address the aforementioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A multifunctional probe for fetal autopsy, comprising: A puncture needle tube, wherein the interior of the puncture needle tube is provided with a travel support channel, the travel support channel passing through both ends of the puncture needle tube; A supporting inner core includes a core body and a positioning mechanism disposed on the core body. The core body includes an operating end and a positioning end disposed opposite to each other. The positioning mechanism is disposed on the positioning end and has a retracted state and an unfolded positioning state. The detection core has a control end and an injection end at its two ends. An injection channel is formed inside the detection core. An injection connection structure is connected to the control end of the injection channel. An injection opening is formed at the injection end of the injection channel.

[0005] The aforementioned multifunctional probe for fetal autopsy includes a positioning mechanism comprising multiple positioning components, which are arranged sequentially at intervals along the circumference of the core.

[0006] The aforementioned multifunctional probe for fetal autopsy includes a positioning mechanism that further comprises an annular fixing member, which is fixedly mounted on the core.

[0007] The aforementioned multifunctional probe for fetal autopsy also includes an annular movable component, which is movably fitted onto the core. One end of the positioning component is rotatably connected to the annular fixed component, and the other end is rotatably connected to the annular movable component.

[0008] The aforementioned multifunctional probe for fetal autopsy includes a positioning component comprising a first and a second support rod hinged together. The end of the first support rod is rotatably connected to the annular movable member, and the end of the second support rod is rotatably connected to the annular fixed member.

[0009] The aforementioned multifunctional probe for fetal autopsy has an annular flexible element at the connection between the first and second expansion rods, and the second expansion rod is covered with an arc-shaped flexible element.

[0010] The aforementioned multifunctional probe for fetal autopsy also includes a spring component. A limiting ring is provided on the core, and the spring component is sleeved on the core. The two ends of the spring component are respectively connected to the limiting ring and the annular movable component.

[0011] The aforementioned multifunctional probe for fetal autopsy also includes a traction guide wire and an operating ring. The operating ring is movably sleeved on the core and located at the operating end. There are at least two traction guide wires. One end of each traction guide wire is connected to the annular movable component. The limiting ring and the annular fixing component are provided with perforations. The other end of each traction guide wire passes through the perforation and connects to the operating ring.

[0012] In the above technical solution, the multifunctional probe for fetal autopsy provided by this utility model includes a puncture needle, a supporting core, and a detection core. The puncture needle has a travel support channel inside. The supporting core includes a core body and a positioning mechanism disposed on the core body. The core body includes an operating end and a positioning end disposed opposite to each other. The positioning component is disposed on the operating end of the core body. The positioning mechanism has a contracted state and an unfolded positioning state. An injection channel is formed inside the detection core. Thus, during use, the puncture needle and the supporting core work together to support the collapsed blood vessel wall, creating favorable conditions for subsequent detection operations. The detection core allows the injection of detection substances into the blood vessel, and the flow and distribution of the detection substances in the blood vessel can be observed, clearly showing blood vessel branches, variations, or lesions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the puncture needle provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the supporting inner core provided in an embodiment of the present utility model; Figure 3 A schematic diagram of the installation of the positioning component provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the detection core provided in an embodiment of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Puncture needle; 11. Travel support channel; 2. Support core; 21. Core; 22. Operating end; 23. Positioning end; 3. Detection core; 31. Control end; 32. Injection end; 33. Injection connection structure; 34. Injection opening; 4. Positioning mechanism; 41. Positioning component; 411. First opening rod; 412. Second opening rod; 42. Annular fixing component; 43. Annular moving component; 44. Annular flexible component; 45. Arc-shaped flexible component; 46. Spring component; 47. Restriction ring; 48. Guide wire; 49. Operating ring. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] like Figure 1-4 As shown, this utility model provides a multifunctional probe for fetal autopsy, including a puncture needle tube 1, a support core 2, and a detection core 3. The puncture needle tube 1 has a travel support channel 11 inside, which runs through both ends of the puncture needle tube 1. The support core 2 includes a core body 21 and a positioning mechanism 4 disposed on the core body 21. The core body 21 includes an operating end 22 and a positioning end 23 disposed opposite to each other. The positioning component 41 is disposed on the operating end 22. The positioning mechanism 4 has a retracted state and an extended positioning state. The two ends of the detection core 3 are a control end 31 and an injection end 32, respectively. An injection channel is formed inside the detection core 3. The injection channel is connected to an injection connection structure 33 at the control end 31. An injection opening 34 is formed at the injection end 32 of the injection channel.

[0018] Specifically, the multifunctional probe used for fetal autopsy includes a puncture needle 1, a support core 2, and a detection core 3. The puncture needle 1 is made of stainless steel, and its length is set as needed, such as approximately 7 cm. The puncture needle 1 is hollow inside, forming a travel support channel 11. The diameter of the puncture needle 1 is approximately 4 cm, and the diameter of the travel support channel 11 is approximately 3 cm. The puncture needle 1 can puncture and travel along the blood vessel. The support core 2 includes a core body 21 and a positioning mechanism 4 disposed on the core body 21. The diameter of the core body 21 is less than or equal to 2 cm. For ease of description, the end of the support core 2 that enters the blood vessel is called the positioning end 23, and the end of the support core 2 located outside the blood vessel is called the operating end 22. The positioning mechanism 4 has two states during use: a contracted state and an extended positioning state. In the contracted state, the dimensions of the positioning mechanism 4 and the core body 21 are smaller than the dimensions of the travel support channel 11, allowing the support core 2 to travel along the travel support channel 11 to the appropriate position.

[0019] In this embodiment, the radial dimension of the detection core 3 is smaller than that of the supporting core 2. For example, if the diameter of the supporting core 2 is 2 cm, the diameter of the detection core 3 is 1 cm. The end of the detection core 3 that enters the blood vessel is called the injection end 32, and the end of the detection core 3 located outside the blood vessel is called the control end 31. An injection channel is formed inside the detection core 3. An injection connection structure 33 is provided at the control end 31 of the detection core 3. The injection connection structure 33 is connected to the injection channel. Through the injection connection structure 33, a blood vessel imaging dye, such as a common dye containing methylene blue, can be injected into the injection channel. An injection opening 34 is formed at the injection end 32 of the injection channel. Through the injection opening 34, the dye in the injection channel can be output into the blood vessel. At the same time, a movement channel can also be provided inside the core 21. The size of the movement channel is larger than that of the detection core 3, so that the detection core 3 can move along the movement channel to a suitable position. The end of the detection core 3 can be made of a flexible material. The direction of the end of the detection core 3 can be adjusted by the operating structure in the prior art. This is prior art and will not be described in detail.

[0020] In this embodiment, the specific operation steps are as follows: Puncture stage: Holding the puncture needle 1, insert the puncture needle 1 accurately into the fetal blood vessel to be examined according to the conventional vascular puncture method.

[0021] Detection Phase: The detection phase has three different operating modes: In the first mode, the supporting core 2 is used for support. The positioning mechanism 4 of the supporting core 2 is in a contracted state, allowing it to be gradually inserted into the blood vessel along the puncture needle 1 without causing additional damage to the vessel wall. Once the puncture needle 1 reaches the target position within the blood vessel, the positioning mechanism 4 of the supporting core 2 is operated, changing it from a contracted state to an unfolded state. At this point, the supporting core 2 is firmly supported within the blood vessel, supporting the collapsed vessel wall and creating favorable conditions for subsequent testing operations. It provides a stable operating space for subsequent measurements of vessel circumference and examinations of various arterial and venous valves.

[0022] In the second mode, the detection core 3 is used for the detection operation. The detection core 3 is gradually inserted into the blood vessel along the puncture needle 1. After the detection core 3 is fully inserted, an external injection device is connected to it, and the injection device is activated to inject the detection substance into the injection channel of the detection core 3. By observing the flow and distribution of the detection substance within the blood vessel, the doctor can clearly see vascular branches, variations, or lesions (such as thrombosis, dissection, and vascular malformation), and it also plays an auxiliary role in detecting vascular damage.

[0023] In the third mode, the first mode operation is performed first, which involves using the supporting core 2 for support: the supporting core 2 is gradually inserted into the blood vessel along the puncture needle 1. After the puncture needle 1 reaches the target position inside the blood vessel, the positioning mechanism 4 of the supporting core 2 switches to the unfolded positioning state. Since the diameter of the detection core 3 is smaller than the diameter of the movement channel of the supporting core 2, the detection core 3 can move along the movement channel of the supporting core 2. When the detection core 3 moves to the appropriate position along the movement channel of the supporting core 2, the second mode operation is performed, which involves connecting an external injection device to the detection core 3, starting the injection device, and injecting the detection substance into the injection channel of the detection core 3.

[0024] Final stage: After the test is completed, operate the positioning mechanism 4 of the support core 2 to restore it from the unfolded positioning state to the contracted state, pull out the test core 3 and / or support core 2 from the puncture needle tube 1, and finally remove the puncture needle tube 1 from the blood vessel.

[0025] The multifunctional probe for fetal autopsy provided by this utility model includes a puncture needle tube 1, a supporting core 2, and a detection core 3. The puncture needle tube 1 has a travel support channel 11 inside. The supporting core 2 includes a core body 21 and a positioning mechanism 4 disposed on the core body 21. The core body 21 includes an operating end 22 and a positioning end 23 disposed opposite to each other. The positioning component 41 is disposed on the operating end 22 of the core body 21. The positioning mechanism 4 has a contracted state and an unfolded positioning state. An injection channel is formed inside the detection core 3. Thus, during use, the puncture needle tube 1 and the supporting core 2 work together to support the collapsed blood vessel wall, creating favorable conditions for subsequent detection operations. The detection core 3 can be used to inject detection substances into the blood vessel to observe the flow and distribution of the detection substances in the blood vessel, and can clearly show the blood vessel branches, variations, or lesions.

[0026] In this embodiment, preferably, the positioning mechanism 4 includes a plurality of positioning components 41, which are arranged sequentially at intervals along the circumference of the core 21. The plurality of positioning components 41 can be synchronously switched to a retracted state or an expanded positioning state upon operation.

[0027] In this embodiment, preferably, the positioning mechanism 4 further includes an annular fixing member 42 and an annular movable member 43. The annular fixing member 42 is fixedly installed on the core 21, and the annular movable member 43 is movably sleeved on the core 21. One end of the positioning member 41 is rotatably connected to the annular fixing member 42, and the other end is rotatably connected to the annular movable member 43. Thus, during use, when the annular movable member 43 is driven to move towards the annular fixing member 42, each positioning member 41 will be driven to open up to the unfolded positioning state. When the annular movable member 43 is driven to move away from the annular fixing member 42, each positioning member 41 will retract to the contracted state.

[0028] In this embodiment, preferably, the positioning member 41 includes a first supporting rod 411 and a second supporting rod 412 that are hinged to each other. That is, one end of the first supporting rod 411 and one end of the second supporting rod 412 are rotatably connected together by a hinge shaft. The other end of the first supporting rod 411 is rotatably connected to the annular movable member 43, and the other end of the second supporting rod 412 is rotatably connected to the annular fixed member 42. An annular flexible member 44 is provided at the connection between the first supporting rod 411 and the second supporting rod 412. The annular flexible member 44 is provided with a flexible contraction part along the circumferential direction. An arc-shaped flexible body 45 covers the second supporting rod 412. When the second supporting rod 412 is driven to unfold, both the annular flexible member 44 and the arc-shaped flexible body 45 unfold.

[0029] In this embodiment, preferably, the positioning mechanism 4 further includes an operable operating component, which includes a spring 46, a guide wire 48, and an operating ring 49. A limiting ring 47 is provided on the core 21. The spring 46 is sleeved on the core 21. The two ends of the spring 46 are respectively connected to the limiting ring 47 and the annular movable member 43. The operating ring 49 is movably sleeved on the core 21 and located at the operating end 22. There are at least two guide wires 48. One end of the guide wire 48 is connected to the annular movable member 43. The limiting ring 47 and the annular fixed member 42 are provided with through holes. The other end of the guide wire 48 passes through the through holes and is connected to the operating ring 49.

[0030] During use, in the initial state, each positioning component 41 is in a retracted state, facilitating the movement of the inner core 3. When positioning is required via the positioning component 41, the operator pulls the operating ring 49, causing it to move towards the operating end 22 of the inner core 3. The guide wire 48 then pulls the annular movable component 43, causing it to move towards the annular fixed component 42. This causes the first and second expansion rods 411 and 412 to rotate and unfold, and the annular flexible component 44 and the flexible body also unfold synchronously. Each positioning component 41 switches to the unfolded positioning state. During this process, the spring 46 is compressed and elastic, keeping the operating ring 49 in a preset position, thus keeping the positioning component 41 in the unfolded positioning state. When the pulling of the operating ring 49 is released, the spring 46 drives the annular movable component 43 to move away from the annular fixed component 42 until the first and second expansion rods 411 and 412 return to their initial state, i.e., each positioning component 41 returns to its initial state.

[0031] The operating end 22 of the inner core 3 can also be provided with a first locking structure and a second locking structure. The first locking structure corresponds to the initial position of the operating ring 49. The operating ring 49 can be locked by the first locking structure, so that the operating ring 49 is locked in the initial position and each positioning component 41 is in the retracted state. The second locking structure corresponds to the position of the operating ring 49 after the pulling operation. That is, when the operating ring 49 corresponds to the second locking structure, each positioning component 41 is in the unfolded positioning state. The first locking structure and the second locking structure can be locking grooves. Locking pins corresponding to the locking grooves can be provided on the operating ring 49. When the operating ring 49 moves to the corresponding position, the locking pins are operated to embed and fix them in the locking groove to lock the operating ring 49.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multifunctional probe for fetal autopsy, characterized in that, include: A puncture needle tube, wherein the interior of the puncture needle tube is provided with a travel support channel, the travel support channel passing through both ends of the puncture needle tube; A supporting inner core includes a core body and a positioning mechanism disposed on the core body. The core body includes an operating end and a positioning end disposed opposite to each other. The positioning mechanism is disposed on the positioning end and has a retracted state and an unfolded positioning state. The detection core has a control end and an injection end at its two ends. An injection channel is formed inside the detection core. An injection connection structure is connected to the control end of the injection channel. An injection opening is formed at the injection end of the injection channel.

2. The multifunctional probe for fetal autopsy according to claim 1, characterized in that, The positioning mechanism includes multiple positioning components, which are arranged sequentially at intervals along the circumference of the core.

3. The multifunctional probe for fetal autopsy according to claim 2, characterized in that, The positioning mechanism also includes an annular fixing member, which is fixedly installed on the core.

4. The multifunctional probe for fetal autopsy according to claim 3, characterized in that, It also includes a ring-shaped movable component, which is movably fitted on the core. One end of the positioning component is rotatably connected to the ring-shaped fixed component, and the other end is rotatably connected to the ring-shaped movable component.

5. The multifunctional probe for fetal autopsy according to claim 4, characterized in that, The positioning component includes a first expansion rod and a second expansion rod that are hinged to each other. The end of the first expansion rod is rotatably connected to the annular movable member, and the end of the second expansion rod is rotatably connected to the annular fixed member.

6. The multifunctional probe for fetal autopsy according to claim 5, characterized in that, An annular flexible element is provided at the connection between the first and second support rods, and an arc-shaped flexible element is provided on the second support rod.

7. The multifunctional probe for fetal autopsy according to claim 6, characterized in that, It also includes a spring component, a limiting ring is provided on the core, the spring component is sleeved on the core, and the two ends of the spring component are respectively connected to the limiting ring and the annular movable component.

8. The multifunctional probe for fetal autopsy according to claim 7, characterized in that, It also includes a traction guide wire and an operating ring. The operating ring is movably sleeved on the core and located at the operating end. There are at least two traction guide wires. One end of the traction guide wire is connected to the annular movable component. The limiting ring and the annular fixing component are provided with through holes. The other end of the traction guide wire passes through the through holes and is connected to the operating ring.

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