Auxiliary device for taking out skin endothelial cell tumor puncture specimen

Abstract

The invention relates to an auxiliary device for taking out a skin endothelial cell tumor puncture specimen, and belongs to the technical field of medical equipment. The subcutaneous tumor fixing device comprises a positioning adjusting assembly arranged at the front end of the positioning adjusting assembly and used for fixing a subcutaneous tumor; the negative pressure assembly is arranged at the front end of the positioning adjusting assembly and used for assisting the positioning adjusting assembly to be fixed to the skin surface; the puncturing and sampling assembly is located at the rear end of the positioning and adjusting assembly and used for puncturing and sampling the subcutaneous tumor sample; the position adjusting assembly is located on the base and used for adjusting the distance between the puncture sampling assembly and the to-be-punctured part. The device clamps the tumor edge through cooperation of the adjusting ring and the fixing rod, the adsorption force generated by the negative pressure assembly enables the skin surface to keep fixed contact with the device, the position adjusting assembly drives the puncture sampling assembly to move to the target depth along the preset path, the problem of sampling deviation caused by unstable tumor fixation is effectively solved, the operation process is simplified, and the sampling efficiency is improved. And the puncture depth and the angle can be adjusted more accurately.

Description

Technical Field

[0001] This invention relates to an auxiliary device for retrieving specimens from dermal endothelial cell tumor puncture, belonging to the field of medical device technology. Background Technology

[0002] A tumor is a new growth formed by the proliferation of local tissue cells under the influence of various tumorigenic factors. To accurately determine the type and nature of a tumor in order to formulate an appropriate treatment plan, pathological examination of the tumor tissue is necessary, and needle biopsy is one of the important methods for obtaining tumor tissue samples. It is characterized by minimal trauma, less pain, and rapid recovery, and is widely used in clinical practice such as cytological biopsy diagnosis and tissue sampling.

[0003] Current skin tumor biopsy techniques suffer from the following main problems: First, sample fixation is difficult. Traditional biopsy methods lack effective fixation for tumors on the skin surface, making them prone to movement during puncture, thus affecting the accuracy and stability of the sampling and potentially failing to obtain a satisfactory tumor tissue sample. Second, sample integrity is poor. Some existing sampling needles are poorly designed, failing to obtain complete tumor tissue, especially for hard or complex tumors, leading to incomplete samples and affecting the accuracy of pathological diagnosis. Furthermore, samples are easily contaminated. During sampling, samples may come into contact with air, or after extraction, improper handling can lead to contamination from the external environment, affecting sample quality and subsequent pathological analysis. Finally, the procedure is complex. Some traditional biopsy devices involve numerous steps, requiring operators with high technical skills and extensive experience; otherwise, operational errors may occur, increasing patient discomfort and sampling risks. Summary of the Invention

[0004] This application provides an auxiliary device for retrieving puncture specimens from skin endothelial cell tumors, which aims to improve the convenience of tumor puncture specimen sampling.

[0005] An auxiliary device for retrieving specimens from endothelial cell tumors of the skin, mounted on a hospital bed, includes: a positioning adjustment component located at the front end of a position adjustment component for fixing the subcutaneous tumor; a negative pressure component located at the front end of the positioning adjustment component for assisting in fixing the positioning adjustment component to the skin surface; a puncture sampling component located at the rear end of the positioning adjustment component for puncturing and sampling the subcutaneous tumor sample; and a position adjustment component located on a base for adjusting the distance between the puncture sampling component and the puncture site.

[0006] Through the above technical solution, the device clamps the edge of the tumor by cooperating with the adjusting ring and the fixing rod. The suction force generated by the negative pressure component keeps the skin surface in fixed contact with the device. The position adjustment component drives the puncture sampling component to move along the preset path to the target depth, which effectively solves the sampling deviation problem caused by unstable tumor fixation. The negative pressure suction mechanism reduces the risk of skin surface slippage. The multi-axial adjustment function simplifies the operation process, makes the adjustment of puncture depth and angle more precise, reduces the technical dependence on the operator, and the modular design reduces the sample exposure time, thereby reducing the risk of contamination.

[0007] In some embodiments, the positioning adjustment assembly includes: a fixing ring located on the skin surface; two fixing rods, one with its front end for clamping the tumor and multiple positioning holes on its top side, and an elliptical rod inside; an adjustment ring rotatably connected to the front end of the fixing ring, sleeved around the two fixing rods and slidably connected to them; and a positioning pin with its front end slidably connected to the positioning holes and its rear end slidably connected to the adjustment ring and the fixing ring.

[0008] Through the above technical solution, when the adjusting ring is rotated during operation, its inner wall groove interacts with the sliding connection structure on the outer periphery of the fixing rod, pushing the two fixing rods to move closer or further apart radially. When the fixing rod moves to the target position, the elliptical rod is rotated to adjust the insertion relationship between the positioning pin and the fixing ring, adjusting ring, and fixing rod. The positioning pin on the surface is embedded in the corresponding positioning hole, forming a mechanical lock. At this time, the clamping plate at the front end of the fixing rod forms a stable clamp on the tumor, preventing tissue displacement during puncture. This effectively solves the problem of easy displacement of tumor tissue during traditional puncture sampling. Through the mechanical linkage structure, the dual rods are synchronously clamped and the position is locked, ensuring that the puncture needle accurately enters the target area, improving the integrity of the sample and the reliability of pathological detection.

[0009] In some embodiments, the positioning adjustment assembly further includes a clamping plate located at the front end of the fixing rod and rotatably connected to the fixing rod.

[0010] The above technical solution involves a clamping plate mounted on the front end of a fixing rod via a rotatable connection. When the fixing rod approaches the tumor, the clamping plate can freely adjust its angle around its rotation axis to ensure it conforms to the tumor surface. During puncture, the clamping plate uses the clamping force generated by its rotation to stably confine the tumor between the fixing rods, preventing sampling deviation due to tumor movement. This solution addresses the problem of unstable tumor fixation in traditional puncture devices by improving the adaptability of tumor clamping through an adjustable-angle clamping plate, ensuring the tumor position is fixed during puncture, thereby improving sampling integrity and accuracy while reducing operational complexity.

[0011] In some embodiments, the negative pressure assembly includes: a sealing cavity located at the rear end of the positioning adjustment assembly; an adsorption cavity abutting against the skin surface and located at the bottom side of the adjustment ring; a negative pressure tube connecting the sealing cavity and the adsorption cavity; and an air pump located at the front side of the position adjustment assembly, with its air intake port connected to the sealing cavity.

[0012] Through the above technical solution, before the puncture operation, the air pump is started and suction is applied to the sealed cavity through the negative pressure tube, creating a negative pressure environment inside the adsorption cavity. After the adsorption cavity comes into contact with the skin surface, it adheres tightly to the skin under negative pressure, preventing tumor displacement during the puncture. The interconnected design between the sealed cavity and the adsorption cavity ensures uniform negative pressure distribution, while the continuous operation of the air pump maintains adsorption stability. When the puncture needle enters the skin, the fixation effect of the adsorption cavity reduces sampling deviation caused by tissue movement; it solves the problem of sampling deviation caused by unstable skin fixation during traditional punctures; the interconnected structure between the sealed cavity and the adsorption cavity ensures uniform negative pressure distribution, improving fixation reliability. The continuous suction of the air pump maintains negative pressure stability during the operation, reducing fixation failure caused by pressure fluctuations. The flexible material of the adsorption cavity can adapt to different skin surface morphologies, increasing the applicability of the device.

[0013] In some embodiments, the puncture sampling assembly includes: a puncture needle located on the positioning adjustment assembly; a first sampling head located at the front end of the puncture needle for inserting into a tumor; a second sampling head, the outer wall of which abuts against the inner wall of the first sampling head and is rotatably connected to the first sampling head for cutting tumor samples; and an elastic device located at the rear end of the second sampling head for driving the second sampling head to slide toward the front end.

[0014] Through the above technical solution, when the puncture needle contacts the tumor surface, the first sampling head forms an initial sample groove by piercing the tumor tissue. The second sampling head slides axially under the drive of the elastic device, its outer wall shearing against the inner wall of the first sampling head, completely encapsulating the tumor sample within the closed cutting cavity. During this process, the elastic device continuously applies forward thrust to ensure a tight fit between the second and first sampling heads, preventing the sample from detaching during cutting; this achieves complete cutting and stable containment of the tumor sample, preventing tissue fragments from scattering during the cutting process. The closed structure of the nested sampling head reduces the contact area between the sample and the outside environment, lowering the risk of contamination. The automatic advancement function of the elastic device simplifies the operation steps and improves sampling efficiency.

[0015] In some embodiments, both the first sampling head and the second sampling head are semi-cylindrical grooves, and the groove depth of the first sampling head is greater than the groove depth of the second sampling head.

[0016] Through the above technical solution, the first and second sampling heads are nested together. When the puncture needle enters the tumor, the second sampling head slides forward under the drive of the elastic device and rotates relative to the first sampling head. Because the groove of the first sampling head is deeper, its groove can accommodate more tumor tissue, while the groove of the second sampling head is shallower, thus cutting the tumor tissue during rotation. The difference in groove depth between the two sampling heads allows the cutting process to proceed in stages: the first sampling head contacts and penetrates the tumor tissue first, and the second sampling head then completes the cutting, avoiding sample breakage or residue.

[0017] In some embodiments, the elastic device includes: an elastic element located between the rear end of the puncture needle and the rear end of the second sampling head; and a clip inserted laterally into the puncture needle, with its top side engaging with the second sampling head.

[0018] With the above technical solution, when the puncture needle contacts the tumor, the second sampling head encounters resistance, causing the elastic element to be compressed. When the puncture depth reaches the preset position, the operator can trigger the card to disengage from the latching state by rotating or pressing. The elastic element releases its elastic force, pushing the second sampling head forward quickly. The cutting cavity formed by the second sampling head and the first sampling head is used to cut the tumor sample, effectively improving sample integrity and sampling success rate, while simplifying the operation steps and reducing the technical dependence on the operator.

[0019] In some embodiments, the puncture sampling assembly further includes: a first sleeve, sleeved around the puncture needle and connected to the positioning adjustment assembly; a second sleeve, sleeved around the first sleeve; and a stop bar, disposed inside the second sleeve, with its front end abutting against the second sampling head.

[0020] With the above technical solution, when the puncture needle is advanced into the tumor tissue, the first sleeve forms an initial guiding reference through a rigid connection with the positioning adjustment component. After sampling is completed, the second sleeve is withdrawn synchronously with the puncture needle. Its outer structure can prevent the sample from contacting the external environment, reducing the risk of the sample being contaminated by external pollutants.

[0021] In some embodiments, the position adjustment component includes: a longitudinal adjustment member located on the hospital bed, driving the base to reciprocate along the longitudinal direction of the hospital bed; a vertical adjustment member located on the surface of the base, for driving the position adjustment component to reciprocate vertically; and a lateral adjustment member connected to the vertical adjustment member and the position adjustment component, for driving the position adjustment component to reciprocate laterally.

[0022] The above technical solution enables precise three-dimensional positioning of the puncture sampling component, effectively solving the sampling deviation problem caused by insufficient position adjustment capability of traditional devices. Longitudinal drive ensures rapid positioning of the device to the target area, vertical drive compensates for differences in body surface height, and lateral drive corrects puncture path deviation. The coordinated operation of these three components significantly improves the accuracy and efficiency of puncture sampling, and reduces the risk of repeated punctures due to positional deviations.

[0023] The beneficial effects of this invention are as follows: by adjusting the ring and fixing rod to clamp the edge of the tumor, the suction force generated by the negative pressure component keeps the skin surface in fixed contact with the device, and the position adjustment component drives the puncture sampling component to move along the preset path to the target depth. This effectively solves the sampling deviation problem caused by unstable tumor fixation. The negative pressure suction mechanism reduces the risk of skin surface slippage, simplifies the operation process, and makes the adjustment of puncture depth and angle more precise. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application installed on a hospital bed.

[0025] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 3 This is a schematic diagram illustrating the state of the positioning adjustment component for locating the tumor according to an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the positioning adjustment component in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the fixing rod in an embodiment of this application.

[0029] Figure 6 This is a cross-sectional view of the state in an embodiment of this application when the adjusting ring is rotatable and the length of the fixing rod is fixed.

[0030] Figure 7 This is a cross-sectional view of the state when the adjusting ring is fixed and the length of the fixing rod is adjustable, according to an embodiment of this application.

[0031] Figure 8 This is a schematic diagram of the structure of the front end of the fixing ring in an embodiment of this application.

[0032] Figure 9 This is a cross-sectional view of the state in an embodiment of this application when the adjusting ring is rotatable and the length of the fixing rod is fixed.

[0033] Figure 10 This is a schematic diagram of the negative pressure component in an embodiment of this application.

[0034] Figure 11This is a schematic diagram of the puncture sampling component in an embodiment of this application.

[0035] Figure 12 for Figure 11 Enlarged diagram of part B.

[0036] Figure 13 This is a schematic diagram showing the state when the puncture needle is removed according to an embodiment of this application.

[0037] Figure 14 This is a schematic diagram of the structure of the first sampling head and the second sampling head during sampling in an embodiment of this application.

[0038] Figure 15 This is a schematic diagram of the structure of the first sampling head and the second sampling head in the embodiments of this application.

[0039] Figure 16 for Figure 10 An enlarged schematic diagram of part A in the middle.

[0040] Figure 17 This is a schematic diagram of the structure of the puncture needle tip in an embodiment of this application.

[0041] Figure 18 This is a schematic diagram showing the state after puncture sampling in an embodiment of this application.

[0042] Figure 19 This is a schematic diagram of the needle removal structure in an embodiment of this application.

[0043] Figure 20 for Figure 19 An enlarged schematic diagram of section C.

[0044] The labels in the attached diagram are as follows: 11. Hospital bed; 12. Base; 121. First positioning groove; 122. Elastic restraint belt; 13. Outer shell; 2. Positioning adjustment assembly; 21. Fixing ring; 211. Second positioning groove; 22. Fixing rod; 221. Positioning hole; 222. Oval rod; 223. Positioning pin; 23. Adjusting ring; 24. Clamping plate; 3. Negative pressure assembly; 31. Sealing cavity; 311. Pressing head; 312. Pressing rod; 32. Adsorption cavity; 33. Negative pressure tube; 34. Air pump; 4. Puncture sampling assembly; 41. Puncture needle; 411. Locking block; 412. Retaining ring. ; 42. First sampling head; 421. Slot; 43. Second sampling head; 431. Cover plate; 432. Connecting rod; 433. Card plate; 44. Elastic device; 441. Elastic element; 442. Card; 45. First sleeve; 46. Second sleeve; 461. Sterile cotton; 47. Stop bar; 5. Position adjustment assembly; 51. Longitudinal adjustment element; 511. Rotary drive element; 512. Screw; 52. Vertical adjustment element; 521. First telescopic drive element; 522. First telescopic rod; 53. Lateral adjustment element; 531. Second telescopic drive element; 532. Second telescopic rod. Detailed Implementation

[0045] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0048] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0049] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0050] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0051] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0052] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0053] Embodiments of this application provide an auxiliary device for retrieving specimens from skin endothelial cell tumor punctures, such as... Figure 1-20 As shown, the device is installed on the hospital bed 11 and includes a positioning adjustment component 2, a negative pressure component 3, a puncture sampling component 4, and a position adjustment component 5. The positioning adjustment component 2 is located at the front end of the position adjustment component 5 and is used to fix the subcutaneous tumor. The negative pressure component 3 is located at the front end of the positioning adjustment component 2 and is used to assist in fixing the positioning adjustment component 2 to the skin surface. The puncture sampling component 4 is located at the rear end of the positioning adjustment component 2 and is used to puncture and sample the subcutaneous tumor. The position adjustment component 5 is located on the base 12 and is used to adjust the distance between the puncture sampling component 4 and the puncture site.

[0054] Reference Figure 1 and Figure 2 The positioning adjustment assembly 2 includes a fixing ring 21, a fixing rod 22, a clamping plate 24, and an adjusting ring 23, as shown in the reference. Figure 2 and Figure 3 There are two fixing rods 22, one along the diameter of the fixing ring 21 and the other through the diameter of the adjusting ring 23. The front end is used to clamp the tumor. Specifically, the fixing rod 22 in this embodiment is a square rod, specifically a square cross-section rod structure with a side length of 5mm, to prevent the fixing rod 22 from rotating with the adjusting ring 23 during sliding, and to facilitate the operator to move the fixing rod 22. The fixing rod 22 has a circular hole with a diameter of 3.5mm opened along the axial direction, and an elliptical rod 222 is inserted into the circular hole.

[0055] Reference Figure 3 and Figure 5One end of the elliptical rod 222 is inserted into the circular hole from the outside to the inside and is rotatably connected to the inner wall of the circular hole. The other end of the elliptical rod 222 is fixedly connected to an adjustment knob, which abuts against the rear end of the fixed rod 22. Multiple positioning holes 221 are evenly spaced along the length of the fixed rod 22 on the top side of the fixed rod 22. Positioning pins 223 that are compatible with the positioning holes 221 are inserted vertically into the positioning holes 221. The positioning pins 223 have a cylindrical structure and a chamfered front edge to facilitate positioning. 223 disengages from the positioning hole 221. Rotating the adjustment knob drives the elliptical rod 222 to rotate within the fixed rod 22, thereby driving the positioning pin 223 to slide within the positioning hole 221. During the sliding process, the front end of the positioning pin 223 can be inserted into the positioning hole 221 and engage with it, and abut against the surface of the elliptical rod 222 to form a mechanical lock. The rear end of the positioning pin 23 can pass through the adjustment ring 23 or be inserted into the adjustment ring 23. In this embodiment, the elliptical rod 222 and the positioning pin 223 are made of SUS 304 stainless steel. The length of the major half-axis of the elliptical rod 222 is 3.5mm, and the length of the minor half-axis is 1.5mm.

[0056] Reference Figure 7 and Figure 8 The adjusting ring 23 is a 180° semicircular ring, coaxially set with the fixing ring 21, ensuring that the forces of the two fixing rods 22 are in the same straight line. The adjusting ring 23 has a through hole along the puncture direction for the positioning pin 223 to pass through. The outer diameter of the fixing ring 21 is 5-8cm, and the front side of the fixing ring 21 has an annular groove to accommodate the adjusting ring 23. In this embodiment, the fixing ring 21 and the fixing ring 23 are made of medical hard plastic. The outer diameter of the fixing ring 21 is 6cm, and the inner diameter is 5cm, suitable for most male and female patients. The length of the fixing rod 22 is 4cm. cm, the front side of the fixing ring 21 has multiple second positioning grooves 211 along the circumferential direction. The openings of the second positioning grooves 211 face the front end. When the elliptical rod 222 is rotated to the point where the long half axis is vertical, the fixing pin 223 is pushed up by the elliptical rod 222, passes through the through hole of the adjusting ring 23, and is inserted into the second positioning groove 211. At this time, the angle of the adjusting ring 23 is fixed. The operator can pull the fixing rod 22 along the length direction of the fixing rod 22 to adjust the length of the fixing rod 22 so that the fixing rod 22 drives the clamping plate 24 to adjust to a suitable position to clamp the tumor to be punctured.

[0057] Reference Figure 6When the elliptical rod 222 rotates to the point where the short half-axis is vertical, the fixing pin 223 falls into the positioning hole 221 of the fixing rod 22 due to gravity, fixing the length of the fixing rod 22. At this time, the adjusting ring 23 can rotate along the annular groove of the fixing ring 21 to adjust the angle. The rear side of the clamping plate 24 is hinged to the front end of the fixing rod 22. The front side of the clamping plate 24 is set to be arc-shaped with a radius of curvature of 15mm, which is suitable for common tumor protrusions and improves the fit with tumor tissue. In this embodiment, the clamping plate 24 is made of medical soft silicone with a Shore A hardness of 20, which further prevents tumor slippage while improving the fit with tumor tissue. The clamping plate 24 at the front end of the fixing rod 22 forms a stable clamp for the tumor, avoiding displacement of tumor tissue during puncture. The adjusting ring 23 is rotatably connected to the front end of the fixing ring 21, sleeved on the outer periphery of the two fixing rods 22 and slidably connected to the fixing rods 22.

[0058] Reference Figure 9 Continue rotating the elliptical rod 222. When the elliptical rod 222 rotates to the angle between the long half axis and the short half axis, a portion of the front end of the fixing pin 223 falls into the positioning hole 221. The rear end of the fixing pin 223 passes through the through hole of the adjusting ring 23 and is inserted into the second positioning groove 211 of the fixing ring 21. At this time, the angle of the adjusting ring 23 and the length of the fixing rod 22 are fixed, thus completing the clamping and positioning of the tumor to be punctured.

[0059] Reference Figure 1 and Figure 10 The negative pressure assembly 3 includes a sealing cavity 31, an adsorption cavity 32, a negative pressure tube 33, and an air pump 34. The sealing cavity 31 is located at the rear end of the positioning adjustment assembly 2 and is set as an annular cavity, made of the same material as the fixing ring 21. The adsorption cavity 32 abuts against the skin surface, is located on the bottom side of the adjustment ring 23, and its front side abuts against the skin. It is set as an annular cavity. The rear side of the adsorption cavity 32 is connected to the fixing ring 21 through a connecting tube. The connecting tube is made of the same material as the fixing ring 21. The adsorption cavity 32 is made of medical-grade soft silicone with a Shore hardness of 30-40. The adsorption cavity 32, the connecting tube, and the fixing ring 21 are fixedly connected. The front side of the adsorption cavity 32 has multiple air holes. The outer diameter of the adjustment ring 23 is 0.5cm. The inner ring sidewall of the adjustment ring 23 surrounds the outer circumference of the connecting tube, allowing the adjustment ring 23 to rotate freely.

[0060] Reference Figure 10 The two ends of the negative pressure tube 33 are connected to the sealing cavity 31 and the adsorption cavity 32. The front end of the negative pressure tube 33 is inserted into the fixing ring 21 and connected to the connecting tube. A rubber ring is sleeved on the outer periphery of the front end of the negative pressure tube 33 to ensure that the negative pressure tube 33 and the fixing ring 21 are sealed. The air pump 34 is located in front of the position adjustment component 5. The air inlet is connected to the sealing cavity 31. The negative pressure state of the adsorption cavity 32 is maintained by continuous or intermittent suction. In this embodiment, the air pump 34 is a KVP10 diaphragm vacuum pump.

[0061] In this embodiment, to prevent cross-infection, both the skin contact positioning adjustment component 2 and the puncture sampling component 4 are disposable items. Before puncture, the fixing ring 21 needs to be inserted into the front end of the negative pressure tube 33 for sealing connection. Then, the front end of the adsorption chamber 32 is brought into contact with the skin. After the air pump 34 is started, the sealed chamber 31 is suctioned through the negative pressure tube 33, so that a negative pressure environment is formed inside the adsorption chamber 32. Under the action of negative pressure, the adsorption chamber 32 fits tightly against the skin to avoid the tumor position shifting during puncture. When the puncture sampling component 4 enters the skin, the fixing effect of the adsorption chamber 32 can reduce the sampling deviation caused by tissue movement. The bottom of the adsorption chamber 32 is made of flexible material to adapt to different skin surface morphologies, improving the applicability of the device.

[0062] Reference Figure 11 The puncture sampling assembly 4 includes a puncture needle 41, a first sampling head 42, a second sampling head 43, and an elastic device 44. The front end of the puncture needle 41 penetrates the sealed cavity 31 along the puncture direction. In this embodiment, the puncture needle 41 is made of SUS 304 stainless steel with an outer diameter of 2.5 mm and a wall thickness of 0.2 mm. The first sampling head 42 is located at the front end of the puncture needle 41 and is used to puncture the tumor. The outer wall of the second sampling head 43 abuts against the inner wall of the first sampling head 42 and is rotatably connected to the first sampling head 42 for cutting tumor samples.

[0063] Reference Figure 11 and Figure 12 The elastic device 44 is located at the rear end of the second sampling head 43 and is used to drive the second sampling head 43 to slide towards the front end. When the first sampling head 42 pierces the tumor tissue to form an initial sample groove, the second sampling head 43 slides axially under the drive of the elastic device 44. Its outer wall forms a shearing action with the inner wall of the first sampling head 42, completely encapsulating the tumor sample in the closed cutting cavity. Figures 13-14 Both the first sampling head 42 and the second sampling head 43 are semi-cylindrical grooves. In this embodiment, both the first sampling head 42 and the second sampling head are made of SUS material. Made of 304 stainless steel, the groove depth of the first sampling head 42 is greater than that of the second sampling head 43. In this embodiment, the semi-circular groove diameter of the first sampling head 42 is 3mm and the length is 8mm. After the second sampling head 43 and the first sampling head 42 are inserted into the tumor, the outer wall of the second sampling head 43 abuts against the inner wall of the first sampling head 42, the front end of the second sampling head 43 abuts against the bottom of the groove of the first sampling head 42, and the inner wall of the second sampling head 43 and the inner wall of the first sampling head 42 form a cutting cavity. A cover plate 431 is fixedly connected to the rear end of the second sampling head 43, and the cover plate 431 closes the cutting cavity. A connecting rod 432 is fixedly connected to the rear side of the cover plate 431. The connecting rod 432 extends vertically and is fixedly connected to a clamping plate 433. The front end of the first sampling head 42 is sharp.

[0064] To improve the sealing of the cutting cavity, refer to Figure 14 and Figure 15 The rear end of the first sampling head 42 is provided with multiple slots 421 in the vertical direction. The front end of the puncture needle 41 is fixedly connected to a locking block 411 that matches the slot 421. The first sampling head 42 and the puncture needle 41 are engaged by the locking block 411 and the slot 421. A retaining ring 412 is fixedly connected to the bottom of the slot of the first sampling head 42. The inner circumferential surface of the retaining ring 412 abuts against the outer circumferential surface of the second sampling head 43. The automatic advancement function of the elastic device 44 simplifies the operation steps and improves the sampling efficiency.

[0065] Reference Figure 11 , Figure 12 and Figure 15 The elastic device 44 includes an elastic element 441 and a card 442. The elastic element 441 is located between the rear end of the puncture needle 41 and the rear end of the second sampling head 43. The rear end of the elastic element 441 is fixedly connected to the rear end of the puncture needle, and the front end of the elastic element 441 abuts against the rear side of the card plate 433. The card 442 is inserted laterally into the puncture needle 41, and its top side is engaged with the front side of the card plate 433. In this embodiment, the elastic element is a compression spring, specifically made of SUS 304 stainless steel, with a compression coefficient of 1.0-3.0 N / mm, specifically 2.0 N / mm. The card 442 is made of 5mm thick SUS stainless steel. 304 stainless steel; In the initial state, the elastic element 441 is in a compressed state, and the top side of the card 442 abuts against the front side of the card plate 433. When the puncture needle 41 drives the first sampling head 42 to the preset position, the medical staff pulls out the card 442 to disengage from the puncture needle, so that the second sampling head 43 is disengaged from the locking state. The elastic element 441 releases its elastic force to push the second sampling head 43 to slide forward quickly, and uses the cutting cavity formed by it and the first sampling head 42 to complete the cutting of the tumor sample.

[0066] Reference Figure 12 , Figures 16-20 The puncture sampling assembly 4 also includes a first sleeve 45, a second sleeve 46, and a stop bar 47. The first sleeve 45 is sleeved around the puncture needle 41 and connected to the positioning adjustment assembly 2. The second sleeve 46 is sleeved around the first sleeve 45. The inner wall of the second sleeve 46 is provided with multiple protrusions. The outer wall of the first sleeve 45 is provided with multiple sliding grooves in the vertical direction for the protrusions to slide, so that the first sleeve 45 can slide along the second sleeve 46.

[0067] Reference Figures 17-20After sampling is completed, the puncture needle 41 is pulled out, and the second sampling head 43 is withdrawn along with the puncture needle 41. Then the second sleeve 46 is pushed upward. In this embodiment, the stop bar 47 is made of SUS 304 stainless steel. In the puncture state, the stop bar 47 is rotatably connected to the inner wall of the second sleeve 46. The rotation axis is set along the transverse direction of the second sleeve 46. When the first puncture needle 42 is inserted into the second sleeve 46, the front end of the first sampling head 41 pushes the stop bar 47 away from the central axis of the second sleeve 46 to rotate.

[0068] When the needle is being withdrawn, the front end of the stop bar 47 can abut against the rear side of the retaining ring 412 of the second sampling head 43. During the withdrawal of the puncture needle 41, the puncture needle 41 separates from the first sampling head 42. The stop bar 47 blocks the first sampling head 42 and the second sampling head 43 within the second sleeve 46. The tumor sample is in the cutting cavity formed by the first sampling head 42 and the second sampling head 43. The first sampling head 42 and the second sampling head 43 are taken out from the second sleeve 46. The connecting rod 432 is rotated so that the outer wall of the second sampling head 43 abuts against the inner wall of the first sampling head 42. Then the tumor sample is transferred to the specimen bottle, reducing the time the tumor sample is exposed to air and preventing cross-infection. When the puncture needle 41 is advanced into the tumor tissue, the first sleeve 45 forms an initial guiding reference through a rigid connection with the positioning adjustment component 2.

[0069] After sampling is completed, the second sleeve 46 is withdrawn synchronously with the puncture needle 41, which can prevent the sample from contacting the external environment and reduce the risk of the sample being attached by external contaminants. The second sleeve 46 is provided with sterile cotton 461, and the outer periphery of the puncture needle 41 is in contact with the sterile cotton 461 to wipe the residue on the puncture needle 41.

[0070] Reference Figure 1 and Figure 19 The base 12 has a first positioning groove 121 on its top for placing limbs. An elastic restraint strap 122 is provided on the top of the first positioning groove 121 for fixing the limbs. The restraint strap 122 is a nylon Velcro strap with a width of 2mm and a length of 15mm, and a soft pad is provided on the inside. The position adjustment component 5 includes a longitudinal adjustment component 51, a vertical adjustment component 52 and a transverse adjustment component 53. The longitudinal adjustment component 51 is located on the hospital bed 11 and drives the base 12 to move back and forth along the longitudinal direction of the hospital bed 11. It includes a rotary drive component 511 and a screw 512. One end of the screw 512 passes through the base 12 along the longitudinal direction of the hospital bed 11 and is rotatably connected to one end of the hospital bed 11. The other end of the screw 512 is fixedly connected to the drive end of the rotary drive component 511. The screw 512 is threadedly connected to the base 12. The fixed end of the rotary drive component 511 is detachably connected to the hospital bed 11 by a locking bolt. In this embodiment, the rotary drive component is a rotary motor.

[0071] Reference Figure 19The vertical adjustment component 52 is located on the surface of the base 12. The vertical adjustment component 52 includes a first telescopic drive component 521 and a first telescopic rod 522. The fixed end of the first telescopic drive component 521 is detachably connected to the base 12 by a locking bolt. The two ends of the first telescopic rod 522 are respectively connected to the drive end of the first telescopic rod 522 and the horizontal adjustment component 53.

[0072] Reference Figure 19 The lateral adjustment component 53 is connected to the vertical adjustment component 52 and the positioning adjustment component 2, and is used to drive the positioning adjustment component 2 to move back and forth laterally. The lateral adjustment component 53 is disposed inside the housing. The first telescopic rod 522 is connected to the bottom side of the housing. The air pump 34 is disposed inside the housing. The lateral adjustment component 53 includes a second telescopic rod 532 and a second telescopic drive component 531. In this embodiment, the first telescopic drive component 521 and the second telescopic drive component 531 are LA12 type electric push rods. The second telescopic drive component 531 is disposed inside the housing. One end of the second telescopic rod 532 is fixedly connected to the second telescopic drive component 531, and the other end extends laterally and is fixedly connected to the sealing cavity 31.

[0073] The position adjustment component 5 enables precise three-dimensional positioning of the puncture sampling component 4, effectively solving the sampling deviation problem caused by insufficient position adjustment capability of traditional devices. The longitudinal drive ensures that the device is quickly positioned to the target area, the vertical drive compensates for differences in body surface height, and the lateral drive corrects the puncture path deviation. The three components work together to significantly improve the accuracy and efficiency of puncture sampling and reduce the risk of repeated punctures due to position deviation.

[0074] Before the puncture, the patient lies on the bed 11, with the forearm placed in the first positioning groove 121 and fixed by the elastic restraint strap 122. The longitudinal adjustment component 51, vertical adjustment component 52, and lateral adjustment component 53 move the fixing ring 21 above the skin of the protruding tumor to be punctured. Pressing the pressing head 311 above the sealing cavity 31 drives the pressing rod 312 to move down and press against the fixing ring 21, so that the fixing ring 21 moves the suction cavity 32 close to the skin. The air pump 34 is turned on to perform negative pressure suction. The knob is rotated to adjust the fixing rod 22 and the adjusting ring 23, adjusting the angle and length of the fixing rod 22 and positioning the fixing rod 22 and the adjusting ring 23, thereby fixing the tumor between the two clamping plates 24. When the tumor is punctured, the puncture needle 41 is inserted vertically into the first sleeve 45. After the first sampling head 42 punctures the tumor, the card 442 is pulled out, and the elastic element 441 pushes the second sampling head 46 forward. The second sampling head 43 works with the first sampling head 42 to complete the cutting and sampling. When it is necessary to remove the tumor sample, the puncture needle 41 is pulled out, and the stop bar 47 keeps the first sampling head 42 and the second sampling head 43 in the second sleeve 46. Then, the second sleeve 46 is pushed upward, and the first sampling head 42 and the second sampling head 43 are pushed out. The slot of the second sampling head 43 is inserted into the specimen bottle, and the connecting rod 432 is rotated to transfer the punctured tumor sample into the specimen bottle.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An auxiliary device for retrieving specimens from endothelial cell tumor aspiration, set on a hospital bed (11), characterized in that, include: The positioning adjustment component (2) is set at the front end of the position adjustment component (5) and is used to fix the subcutaneous tumor; A negative pressure component (3) is disposed at the front end of the positioning adjustment component (2) to assist the positioning adjustment component (2) in fixing to the skin surface; The puncture sampling component (4) is located at the rear end of the positioning adjustment component (2) and is used to perform puncture sampling on subcutaneous tumor samples; The position adjustment component (5), located on the base (12), is used to adjust the distance between the puncture sampling component (4) and the puncture site.

2. The auxiliary device for retrieving endothelial cell tumor puncture specimens according to claim 1, characterized in that, The positioning adjustment component (2) includes: The retaining ring (21) is located on the skin surface; There are two fixing rods (22), with the front end used to clamp the tumor and multiple positioning holes (221) on the top side, and an elliptical rod (222) inside. The adjusting ring (23) is rotatably connected to the front end of the fixed ring (21), and is sleeved on the outer circumference of the two fixed rods (22) and slidably connected to the fixed rods (22). The positioning pin has its front end slidably connected to the positioning hole (221) and its rear end slidably connected to the adjusting ring (23) and the fixing ring (21).

3. The auxiliary device for retrieving skin endothelial cell tumor puncture specimens according to claim 1, characterized in that, The positioning adjustment component (2) further includes: The clamping plate (24) is located at the front end of the fixing rod (22) and is rotatably connected to the fixing rod (22).

4. The auxiliary device for retrieving skin endothelial cell tumor puncture specimens according to claim 3, characterized in that, The negative pressure component (3) includes: The sealed cavity (31) is located at the rear end of the positioning adjustment assembly (2); The adsorption cavity (32) is in contact with the skin surface and is located on the bottom side of the adjustment ring (23); Negative pressure tube (33) connects the sealed cavity (31) and the adsorption cavity (32); An air pump (34) is located in front of the position adjustment assembly (5), and its air intake is connected to the sealing cavity (31).

5. The auxiliary device for retrieving endothelial cell tumor puncture specimens according to claim 2, characterized in that, The puncture sampling component (4) includes: The puncture needle (41) is located on the positioning adjustment assembly (2); The first sampling head (42) is located at the front end of the puncture needle (41) and is used to puncture the tumor; The outer wall of the second sampling head (43) abuts against the inner wall of the first sampling head (42) and is rotatably connected to the first sampling head (42) for cutting tumor samples; An elastic device (44) is located at the rear end of the second sampling head (43) and is used to drive the second sampling head (43) to slide toward the front end.

6. The auxiliary device for retrieving puncture specimens of skin endothelial cell tumors according to claim 5, characterized in that, Both the first sampling head (42) and the second sampling head (43) are semi-cylindrical grooves, and the groove depth of the first sampling head (42) is greater than the groove depth of the second sampling head (43).

7. The auxiliary device for retrieving endothelial cell tumor puncture specimens according to claim 5, characterized in that, The elastic device (44) includes: An elastic element (441) is located between the rear end of the puncture needle (41) and the rear end of the second sampling head (43); The card (442) is inserted laterally into the puncture needle (41), and its top side is engaged with the second sampling head (43).

8. The auxiliary device for retrieving puncture specimens of skin endothelial cell tumors according to claim 1, characterized in that, The puncture sampling component (4) also includes: The first sleeve (45) is fitted around the puncture needle (41) and connected to the positioning adjustment assembly (2); The second sleeve (46) is fitted around the outer periphery of the first sleeve (45); The stop bar (47) is set inside the second sleeve (46), and its front end can abut against the second sampling head (43).

9. The auxiliary device for retrieving puncture specimens of skin endothelial cell tumors according to claim 1, characterized in that, The position adjustment component (5) includes: The longitudinal adjustment component (51) is located on the hospital bed (11) and drives the base (12) to reciprocate along the longitudinal direction of the hospital bed (11); A vertical adjustment component (52) is located on the surface of the base (12) and is used to drive the positioning adjustment component (2) to move reciprocally in the vertical direction; A lateral adjustment member (53) is connected to the vertical adjustment member (52) and the positioning adjustment assembly (2) and is used to drive the positioning adjustment assembly (2) to move laterally back and forth.

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