Puncture stabilizing assembly for cardiovascular medicine department

By designing a puncture stabilization component including thickened blocks, adjustment belts, elastic support plates and traction belts, the problem of cardiovascular puncture equipment being unstable during femoral artery puncture and inability to fully expose the groin puncture area of ​​obese patients, achieving higher needle holding stability and operational convenience.

CN119632638AActive Publication Date: 2025-03-18THE SECOND AFFILIATED HOSPITAL OF GANNAN MEDICAL COLLEGE
View PDF 8 Cites 0 Cited by

Patent Information

Application Number
CN202411765869.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-03-18
Estimated Expiration
2044-12-04

AI Technical Summary

Technical Problem

Existing cardiovascular puncture equipment is prone to jitter or offset due to hand-held instability during femoral artery puncture, and in obese patients, the inguinal puncture area cannot be fully exposed due to fat accumulation, which affects the operation.

Method used

A cardiovascular puncture stabilization component is designed, including thickened blocks, adjustment belts, elastic support plates and traction belts. Through the cooperation of these components, the handheld area and needle holding stability of the interventional needle handle are increased, and the skin at the groin folds can be supported to ensure full exposure of the puncture area.

Benefits of technology

It effectively improves the needle holding stability of the interventional needle handle, reduces the risk of puncture failure and bleeding, and reduces the operating burden of medical staff, especially in obese patients.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119632638A_ABST
    Figure CN119632638A_ABST
Patent Text Reader

Abstract

The invention relates to a puncture stabilizing assembly for the cardiovascular medicine department. And the thickening block is connected with the adjusting belt. The supporting plates and the traction belt are connected, the supporting plates are hard elastic supporting plates, the two sides of the other ends of the at least two supporting plates are jointly connected with supporting bases respectively, the end of each supporting base is of a convex angle structure, the upper surface of the upper supporting plate is connected with a connecting hose, the connecting hose is connected with a sleeve base, and an inner cavity of the sleeve base is in interference fit with the outer surface of a needle handle of the interventional needle. When the belt body of the traction belt is in a tight state, the lower surface of the other end of the traction belt is fixedly connected to the skin surface of the upper end of the groin in a sticky mode, the supporting plate elastically deforms, the handheld area and the needle holding stability of the interventional needle handle are increased, and the device can replace an operator to keep the handheld state for a long time; puncture failure or bleeding caused by shaking or deviation due to unstable needle holding is avoided, flexibility is high, fine adjustment can be achieved, operation of medical workers is not affected, the device can replace operators to open the groin, the skin of the puncture area cannot be completely exposed due to fat accumulation, and the burden of the medical workers is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a puncture stabilization component for cardiovascular medicine. Background Art

[0002] Cardiac interventional surgery is the most common surgery in cardiovascular medicine. It is an advanced medical technology, usually referring to heart stent surgery or cardiac angiography. It can be used to treat diseases such as angina pectoris, myocardial infarction, and inject contrast agents to observe the condition of the heart and blood vessels. Compared with open-chest surgery, it has the advantages of less trauma and faster recovery.

[0003] Cardiac interventional surgery generally involves puncturing an interventional needle into an artery, then sending a catheter through the artery into the heart, and then performing subsequent treatment or examination items. For example, the end of the catheter is connected to the opening of the coronary artery, and contrast agent is injected into the heart through the catheter. The specific condition of the coronary artery can be seen under X-ray, and the appropriate treatment plan can be selected based on the examination results; or a stent can be placed in the blood vessels in the heart through a catheter to treat diseases such as angina pectoris, myocardial infarction, and cardiovascular stenosis.

[0004] The interventional puncture needle generally contains a needle body and a needle handle. The operator adjusts the angle and depth of the needle by holding the needle handle. This type of puncture needle is flexible for puncture, but due to the small hand-holding area and the thin handle of the interventional needle, the needle is easily unstable. Cardiac interventional surgery generally chooses the femoral artery as the puncture vessel. Under ultrasound guidance, the puncture needle is first inserted into the femoral artery, and then the catheter and guide wire are inserted while maintaining the hand-holding posture. Because the hand-holding posture needs to be maintained for a long time, and due to technical reasons of the operator, the needle is unstable and shakes or deflects, resulting in puncture failure or bleeding. The stabilization devices in the prior art are generally used on smoother skin surfaces. There are fewer stabilization devices specifically for femoral vein puncture. The operation flexibility is general and cannot be finely adjusted, which easily affects the operation of medical workers. For obese patients, the groin puncture area often forms wrinkles due to fat accumulation, and the puncture area cannot be fully exposed. The operator is required to assist in stretching the skin at the groin, which creates a burden for medical staff. Therefore, a new technology is needed to improve this situation. Summary of the invention

[0005] In response to the above-mentioned problems in the prior art, the present invention provides a puncture stabilization component for cardiovascular medicine, which is a special stabilization device for femoral artery puncture, increases the holding area and needle holding stability of the interventional needle handle, and can replace the operator to keep the hand-held state for a long time, avoiding the problem of puncture failure or bleeding caused by unstable needle holding causing shaking or deviation due to technical reasons of the operator. It is highly flexible and can be finely adjusted without affecting the operation of medical workers, and can replace the operator to open the skin in the groin that cannot be fully exposed due to fat accumulation, thereby reducing the burden on medical staff.

[0006] The present invention is implemented by the following technical scheme: a puncture stabilization component for cardiovascular medicine, comprising a thickening block, the lower surface of the thickening block is an inwardly concave arc surface, the horizontal longitudinal side surface of the thickening block is connected with one end of an adjustment belt, the adjustment belt is arranged vertically and longitudinally, the other end of the adjustment belt is connected to the other horizontal longitudinal side surface of the thickening block by annular surrounding, and the adjustment belt is a flexible adjustment belt;

[0007] The lateral side of the thickening block is connected with one end of the support plate, the support plate is arranged horizontally, and at least two of the support plates are arranged vertically, the support plate is an elastic support plate, and the elastic support plate is a hard elastic support plate, and the support plate includes an upper support plate and a lower support plate, and the other ends of at least two of the support plates are respectively connected with support seats on both sides, and the end of the support seat is a convex angle structure, and the upper and lower parts of the other ends of the support seat are respectively connected with the upper support plate and the lower support plate, and the cross-sectional edges of the upper support plate, the lower support plate, the support seat, and the thickening block are surrounded by a triangle, and the upper surface of the thickening block is connected with one end of a plurality of traction belts, and the belt body of the traction belt is distributed horizontally;

[0008] The middle edges of the other ends of the upper support plate and the lower support plate form a concave profile with the ends of the two adjacent support seats, and the middle edge of the other end of the lower support plate forms a concave profile with the ends of the two adjacent support seats to fully expose the groin puncture area, the concave profile of the upper support plate and the upper connection area of ​​the ends of the two adjacent support seats is S1, and the concave profile of the lower support plate and the lower connection area of ​​the ends of the two adjacent support seats is S2, S1>S2;

[0009] The upper surface of the upper support plate is connected with the lower part of the connecting hose, the upper part of the connecting hose is connected with the outer surface of the sleeve, the connecting hose is deformable, the deformable connecting hose is a qualitative deformable connecting hose, the sleeve is arranged horizontally, the sleeve is a hollow annular body, the inner cavity contour of the sleeve is consistent with the contour of the intervention needle handle, and the inner cavity of the sleeve forms an interference fit with the outer surface of the needle handle of the intervention needle;

[0010] When the traction belt is in a taut state, the lower surface of the other end of the traction belt is fixed to the skin surface of the upper end of the groin by adhesive connection, the support plate undergoes elastic deformation, the other end of the upper support plate bulges upward to form a convex arc surface, and the other end of the lower support plate bulges downward to form a concave arc surface.

[0011] Furthermore, the middle edges of the other ends of the upper support plate and the lower support plate form an arc-shaped concave contour with the ends of the two adjacent support seats. The middle edge of the other end of the upper support plate is connected with the upper ends of the two adjacent support seats to form an elliptical concave arc contour. The middle edge of the other end of the lower support plate is connected with the lower ends of the two adjacent support seats to form a circular concave arc contour.

[0012] Furthermore, the cross-section of the other end of the support seat is an arc-shaped profile, and the upper and lower parts of the arc-shaped profile are arranged tangent to the upper support plate and the lower support plate respectively.

[0013] Furthermore, the angle of the convex angle structure is R, and the range of R is 0°<R≤30°.

[0014] Furthermore, an elastic opening is laterally arranged on the upper portion of the sleeve.

[0015] Furthermore, the inner cavity of the sleeve is provided with a plurality of limiting bosses, and the outer surface of the sleeve is provided with thread lines.

[0016] Furthermore, the traction belt is provided with an adhesive layer on the lower surface of the end of the traction belt, thereby forming an adhesive connection with the skin.

[0017] Beneficial Effects

[0018] The present invention can make the support base of the device penetrate deeply into the inguinal fold area smoothly through the cooperation of the support base, the upper support plate, the lower support plate, the thickened base, the traction belt and the adjustment belt. At the same time, the elastic effect of the support plate can play the effect of stretching the skin at the inguinal fold. At the same time, the traction force of the traction belt in the groin direction and the friction force generated by the fixing effect of the thickening block due to the adjusting belt can offset the reaction force of the thickening block due to the elastic deformation of the support plate, thereby maintaining the effect of the elastic deformation of the support plate and replacing the operator to stretch the skin of the puncture area in the groin that cannot be completely exposed due to fat accumulation, thereby reducing the burden on medical personnel; at the same time, the connecting hose can flexibly and finely adjust the angle and telescopic length of the connecting hose, so that the whole formed by the connecting hose and the sleeve can replace the operator to keep the hand-held state for a long time, avoid unstable shaking or deviation of the needle holding causing puncture failure or bleeding, increase the hand-held area and needle holding stability of the interventional needle handle, have high flexibility, can be finely adjusted, and do not affect the operation of medical workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front view of an embodiment of the present invention;

[0020] Figure 2 A front view of a support plate after deformation according to an embodiment of the present invention;

[0021] Figure 3It is a partial enlarged view of an embodiment of the present invention;

[0022] Figure 4 A top view of an embodiment of the present invention;

[0023] Figure 5 It is an overall three-dimensional diagram formed by a support plate and a support seat according to an embodiment of the present invention;

[0024] Figure 6 A cross-sectional view of a sleeve according to an embodiment of the present invention;

[0025] Figure 7 It is a right side view of a sleeve according to an embodiment of the present invention.

[0026] In the figure: thickening block-1; adjustment belt-2; upper support plate-3a; lower support plate-3b; support seat-4; connecting hose-5; sleeve-6; limiting boss-6a; thread line-6b; elastic opening-6c; traction belt-7; adhesive layer-8, groin-9. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] A puncture stabilization component for cardiovascular medicine includes a thickening block 11. The lower surface of the thickening block 11 is a concave arc surface. The concave arc surface can make the lower surface of the thickening block completely close to the skin of the front end of the human thigh, thereby assisting the fixation of the thickening block 11. The horizontal longitudinal side of the thickening block 11 is connected with one end of an adjustment belt 22. The adjustment belt 22 is arranged vertically and longitudinally. The other end of the adjustment belt 22 is connected to the other horizontal longitudinal side of the thickening block 11 through a ring. The adjustment belt 22 is a flexible adjustment belt 22. The thigh circumference at the fixing point of the thickening block 11 is adjusted by the flexible adjustment belt 22, thereby fixing the position of the thickening block 11 and increasing the friction between the fixing block and the skin.

[0029] In this embodiment, the lateral side of the thickening block 11 is connected to one end of the two support plates, the support plates are arranged horizontally, and the two support plates are arranged vertically. The support plates are elastic support plates, and the elastic support plates are hard elastic support plates. When the hard elastic support plates are elastically deformed, sufficient supporting force can be generated to open the wrinkles in the groin area 9.

[0030] In this embodiment, the support plate includes an upper support plate 3a3a and a lower support plate 3b3b, and the other ends of at least two support plates are respectively connected to support seats 4, and the end of the corner seat is a convex angle structure. The convex angle structure allows the support seat 4 to smoothly penetrate into the folds of the groin 9 without the need for other external force assistance, while reducing resistance. The upper and lower parts of the other end of the support seat 4 are respectively connected to the upper support plate 3a3a and the lower support plate 3b3b.

[0031] In this embodiment, the cross-sectional edges of the upper support plate 3a3a, the lower support plate 3b3b, the support seat 4 and the thickened block 11 form a triangle. When the outer surface of the convex angle structure of the support seat 4 is pressed and the thickened block 11 is squeezed by force to cause the upper support plate 3a3a and the lower support plate 3b3b to deform elastically, the upper support plate 3a3a deforms elastically upward and the lower support plate 3b3b deforms elastically downward, thereby achieving the effect of stretching the wrinkled skin in the groin area 9.

[0032] In this embodiment, the upper surface of the thickened block 11 is connected with one end of the two traction belts 7, and the belt body of the traction belt 7 is distributed laterally; the middle edge of the other end of the upper support plate 3a3a and the lower support plate 3b3b forms a concave contour with the ends of the two adjacent support seats 4, and the middle edge of the other end of the lower support plate 3b3b forms a concave contour with the ends of the two adjacent support seats 4 to completely expose the groin 9 puncture area, the concave contour of the upper support plate 3a3a and the upper connection area S1 of the ends of the two adjacent support seats 4, and the concave contour of the lower support plate 3b3b and the lower connection area S2 of the ends of the two adjacent support seats 4, S1>S2, to avoid affecting the full exposure of the puncture area during the femoral artery puncture operation.

[0033] In this embodiment, the upper surface of the upper support plate 3a3a is connected to the lower part of the connecting hose 5, and the upper part of the connecting hose 5 is connected to the outer surface of the sleeve 6. The connecting hose 5 is deformable, and the deformable connecting hose 5 is a qualitatively deformable connecting hose 5. The qualitatively deformable connecting hose 5 can flexibly and finely adjust the angle of the connecting hose 5 and the telescopic state, and at the same time has stability. The combined structure of the sleeve 6 and the connecting hose 5 can replace the operator to hold the needle for a long time, and can avoid unstable shaking or deviation of the needle causing puncture failure or bleeding.

[0034] In this embodiment, the sleeve 6 is arranged horizontally, and the sleeve 6 is a hollow annular body. The inner cavity contour of the sleeve 6 is consistent with the contour of the interventional needle handle. The inner cavity of the sleeve 6 and the outer surface of the needle handle of the interventional needle form an interference fit, so that the needle handle of the interventional needle can form a pre-tightening force in the sleeve 6, which can play the effect of properly fixing the needle handle. At the same time, the sleeve 6 increases the hand-holding area of ​​the interventional needle handle, allowing the operator to hold the needle more stably.

[0035] In this embodiment, when the belt body of the traction belt 7 is in a taut state, the lower surface of the other end of the traction belt 7 is fixed to the skin surface of the upper end of the groin 9 by an adhesive connection, and the support plate undergoes elastic deformation. The other end of the upper support plate 3a3a bulges upward to form a convex arc surface, and the other end of the lower support plate 3b3b bulges downward to form a concave arc surface. After the support plate undergoes elastic deformation, according to Newton's third law, the thickening block 11 is subjected to a reaction force away from the groin 9 area, but due to the pulling effect of the traction belt 7 toward the groin 9, the thickening block 11 is also subjected to a traction force close to the groin 9, thereby offsetting the reaction force received by the thickening block due to the elastic deformation of the support plate, thereby maintaining the effect of the elastic deformation of the support plate.

[0036] In this embodiment, through the cooperation of the support seat 4, the upper support plate 3a3a, the lower support plate 3b3b, the thickened seat, the traction belt 7, and the adjustment belt 22, the support seat 4 of the device can smoothly penetrate into the wrinkled area of ​​the groin 9. At the same time, due to the elastic effect of the support plate, the skin at the wrinkled area of ​​the groin 9 can be stretched open. At the same time, the traction force of the traction belt 7 in the direction of the groin 9 and the friction force generated by the fixing effect of the thickening block 1 due to the adjustment belt 2 can offset the reaction force exerted on the thickening block 1 due to the elastic deformation of the support plate, thereby maintaining the effect of the elastic deformation of the support plate, and can replace the operator to stretch the skin of the puncture area of ​​the groin 9 that cannot be completely exposed due to fat accumulation, thereby reducing the burden on medical personnel; the connecting hose 5 can flexibly and finely adjust the angle and telescopic length of the connecting hose 5, the sleeve 6 can properly fix the interventional needle handle, increase the hand-holding area and needle-holding stability of the interventional needle handle, and the combined structure of the sleeve 6 and the connecting hose 5 can replace the operator to maintain the hand-holding state for a long time, avoiding unstable shaking or deviation of the needle holding resulting in puncture failure or bleeding.

[0037] In this embodiment, the middle edge of the other end of the upper support plate 3a3a and the lower support plate 3b3b forms an arc-shaped concave contour with the ends of the two adjacent support seats 4. The middle edge of the other end of the upper support plate 3a3a is connected with the upper part of the ends of the two adjacent support seats 4 to form an elliptical concave arc contour, and the middle edge of the other end of the lower support plate 3b3b is connected with the lower part of the ends of the two adjacent support seats 4 to form a circular concave arc contour.

[0038] In this embodiment, the cross-section of the other end of the support seat 4 is an arc-shaped profile, and the upper and lower parts of the arc-shaped profile are arranged tangent to the upper support plate 3a3a and the lower support plate 3b3b respectively. The arc-shaped profile of the other end of the support seat 4 can make the elastic deformation of the support plate more fit the skin at the fold of the groin 9 when the upper support plate 3a3a and the lower support plate 3b3b stretch the fold area of ​​the groin 9, thereby increasing the stretching effect.

[0039] In this embodiment, the angle of the convex structure is R, and the range of R is 0°<R≤30°. An elastic opening is laterally arranged on the upper part of the sleeve 6, so that the installation of the interventional needle handle is more convenient. The inner cavity of the sleeve 6 is provided with a plurality of limiting bosses 6a, which further increase the friction between the outer surface of the interventional needle handle and the inner wall of the sleeve 6, thereby increasing the fixing effect of the needle handle and preventing the needle handle from slipping out of the sleeve 6. The outer surface of the sleeve 6 is provided with a thread line 6b, which increases the friction of the outer surface of the sleeve 6, thereby increasing the stability of the needle holding. The traction belt 7 is provided with an adhesive layer 8 on the lower surface of the end of the traction belt 7, so as to form a sticky connection with the skin.

[0040] The working process of this embodiment is as follows:

[0041] S1. Disinfect the puncture area of ​​the groin 9 and the device, place the support seat 4, the upper support plate 3a, the lower support plate 3b, and the thickened block 1 on the skin of the front thigh in the puncture area of ​​the groin 9, point the convex angle structure of the support seat 4 toward the fold of the groin 9, and push the thickened block 1 toward the groin 9, so that the convex angle structure of the support seat 4 penetrates into the fold area of ​​the groin 9.

[0042] S2. When the convex angle structure abuts against the groin 9, it continues to push and thicken toward the groin 9, so that the upper support plate 3a undergoes upward elastic deformation and the lower support plate 3b undergoes downward elastic deformation until the folds of the groin 9 are completely stretched.

[0043] S3. By adjusting the length of the adjusting belt 2, the leg skin below the thickening block 1 is fixed, the friction between the thickening block 1 and the skin is increased, and at the same time, the other end of the traction belt 7 is fixed on the skin surface above the groin 9, such as the abdominal surface skin, which can further offset the reaction force exerted on the thickening block 1 due to the elastic deformation of the support plate, thereby maintaining the effect of the elastic deformation of the support plate, thereby maintaining the stretching effect.

[0044] S4. Install the intervention needle handle in the inner cavity of the sleeve 6 through the elastic outlet, and adjust the angle and insertion depth of the intervention needle handle installed in the inner cavity of the sleeve 6 through the qualitatively deformable connecting hose 5.

[0045] S5. When it is determined that the needle tip of the interventional needle is inserted into the femoral artery, stop adjusting the qualitatively deformable connecting hose 5 so that the integral body formed by the qualitatively deformable connecting hose 5 and the sleeve 6 can maintain a stable state, and then send the catheter into the femoral artery, and then send the catheter into the heart along the femoral artery for subsequent heart treatment or examination.

Claims

1. A puncture stabilization component for cardiovascular medicine, characterized in that: It comprises a thickening block, the lower surface of which is an inwardly concave arc surface, the horizontal longitudinal side surface of which is connected with one end of the adjustment belt, the adjustment belt is arranged vertically and longitudinally, the other end of which is connected with the other horizontal longitudinal side surface of the thickening block by annular surrounding, and the adjustment belt is a flexible adjustment belt; The lateral side of the thickening block is connected with one end of the support plate, the support plate is arranged horizontally, and at least two of the support plates are arranged vertically, the support plate is an elastic support plate, and the elastic support plate is a hard elastic support plate, and the support plate includes an upper support plate and a lower support plate, and the other ends of at least two of the support plates are respectively connected with support seats on both sides, and the end of the support seat is a convex angle structure, and the upper and lower parts of the other ends of the support seat are respectively connected with the upper support plate and the lower support plate, and the cross-sectional edges of the upper support plate, the lower support plate, the support seat, and the thickening block are surrounded by a triangle, and the upper surface of the thickening block is connected with one end of a plurality of traction belts, and the belt body of the traction belt is distributed horizontally; The middle edges of the other ends of the upper support plate and the lower support plate form a concave profile with the ends of the two adjacent support seats, and the middle edge of the other end of the lower support plate forms a concave profile with the ends of the two adjacent support seats to fully expose the groin puncture area, the concave profile of the upper support plate and the upper connection area of ​​the ends of the two adjacent support seats is S1, and the concave profile of the lower support plate and the lower connection area of ​​the ends of the two adjacent support seats is S2, S1>S2; The upper surface of the upper support plate is connected with the lower part of the connecting hose, the upper part of the connecting hose is connected with the outer surface of the sleeve, the connecting hose is deformable, the deformable connecting hose is a qualitative deformable connecting hose, the sleeve is arranged horizontally, the sleeve is a hollow annular body, the inner cavity contour of the sleeve is consistent with the contour of the intervention needle handle, and the inner cavity of the sleeve forms an interference fit with the outer surface of the needle handle of the intervention needle; When the traction belt is in a taut state, the lower surface of the other end of the traction belt is fixed to the skin surface of the upper end of the groin by adhesive connection, the support plate undergoes elastic deformation, the other end of the upper support plate bulges upward to form a convex arc surface, and the other end of the lower support plate bulges downward to form a concave arc surface.

2. A puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: The middle edges of the other ends of the upper support plate and the lower support plate form an arc-shaped concave contour with the ends of the two adjacent support seats. The middle edge of the other end of the upper support plate is connected with the upper ends of the two adjacent support seats to form an elliptical concave arc contour. The middle edge of the other end of the lower support plate is connected with the lower ends of the two adjacent support seats to form a circular concave arc contour.

3. A puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: The cross section of the other end of the support seat is an arc-shaped profile, and the upper part and the lower part of the arc-shaped profile are arranged tangent to the upper support plate and the lower support plate respectively.

4. A puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: The angle of the convex angle structure is R, and the range of R is 0°<R≤30°.

5. The puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: An elastic opening is arranged transversely on the upper part of the sleeve.

6. The puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: The inner cavity of the sleeve is provided with a plurality of limiting bosses, and the outer surface of the sleeve is provided with thread lines.

7. The puncture and stabilization assembly for cardiovascular medicine according to claim 1, characterized in that: The traction belt is provided with an adhesive layer on the lower surface of the end of the traction belt, so as to form an adhesive connection with the skin.

Citation Information

Patent Citations

  • Interventional operation trousers

    CN114868996A

  • Interventional puncture needle

    CN202821550U

  • Cardiovascular interventional therapy puncture needle integrating supporting, angle regulating, pollution preventing and fixing

    CN203539419U

  • Positioner for femoral vein puncture

    CN209713079U

  • Temporary pacemaker femoral vein implantation wound bleeding detection device

    CN212729763U