Pneumatic compression device for venous return observation

Abstract

The utility model provides a pneumatic extrusion device for venous return observation relates to medical instrument technical field, include: bandage, extrusion subassembly, extrusion subassembly includes setting on bandage air bag, is provided with first velcro on air bag, is provided with second velcro on bandage, the utility model discloses, this pneumatic extrusion device is fixed in the body through bandage, air bag is positioned through first velcro and the second velcro on bandage, after air pump starts, the airflow enters fixed block through the air inlet, when gas pressure is in the setting threshold range, gas directly fills into air bag through the outlet through the connecting pipe, realizes extrusion, when gas pressure exceeds setting threshold, promotes the compression expansion spring of moving block, makes the outlet and pressure relief mouth alignment, and gas spills from pressure relief mouth, ensure safety, when air pressure recovers, the expansion spring rebounds, and moving block resets, promote venous return, realize automatic pressure relief and elastic reset, realize stable controllable circulation pressurization.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a pneumatic compression device for observing venous return. Background Technology

[0002] Pneumatic compression devices are used in ultrasound examinations to observe venous return. They mainly promote blood flow by applying pneumatic pressure, improving the visualization of blood flow. This device achieves dynamic monitoring by adjusting the pressure on the veins, thereby improving the diagnostic accuracy of venous return and is widely used in the clinical assessment and treatment of venous diseases.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing pneumatic compression device for venous return observation cannot achieve automatic pressure relief and elastic reset, and cannot provide stable and controllable cyclic pressure. When providing cyclic pressure, the device cannot maintain a constant pressure level, which may lead to excessive or insufficient pressure, affecting the accuracy of venous return observation. The unstable compression force may cause discomfort to the patient, especially under long-term use. Unstable pressure may cause skin damage or pain.

[0004] Therefore, this utility model proposes a pneumatic compression device for observing venous return to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a pneumatic compression device for observing venous return.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a pneumatic compression device for observing venous return, comprising:

[0007] Straps;

[0008] An extrusion assembly, the extrusion assembly including an airbag disposed on a strap, a first hook and loop fastener disposed on the airbag, a second hook and loop fastener disposed on the strap, the second hook and loop fastener being disposed on the first hook and loop fastener;

[0009] A pneumatic assembly includes a fixed block mounted on a strap, an air inlet on one side of the fixed block, an air pump mounted on the strap near the air inlet, an output end of the air pump mounted on the air inlet, a movable block slidably connected inside the fixed block, an air outlet on the movable block, a telescopic spring fixed on the movable block, the other end of the telescopic spring fixed to the fixed block, an air outlet on the fixed block, a connecting pipe fixed to the air outlet, the other end of the connecting pipe fixed to an airbag, and a pressure relief port on the fixed block.

[0010] Furthermore, a rubber ring is fixed on the movable block.

[0011] The beneficial effects of adopting the above-mentioned further solution are: the rubber ring is installed on the outer edge of the moving block to enhance air tightness. When the moving block slides inside the fixed block, the rubber ring is tightly fitted with the inner wall of the fixed block to prevent gas leakage.

[0012] Furthermore, a screw is threadedly connected to the side of the fixed block away from the air inlet, a limit block is fixed to one end of the screw near the moving block, and a knob is fixed to the other end of the screw.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the screw is screwed into the fixed block through the thread, and the limiting block at its front end can limit the maximum displacement of the moving block. Rotating the knob can change the position of the limiting block, thereby realizing the manual adjustment of the pressure threshold.

[0014] Furthermore, a gripping component is provided on the side of the fixed block near the bottom of the knob, and the gripping component includes a support plate disposed on the fixed block.

[0015] The advantages of adopting the above-mentioned further solution are: the gripping component is used to assist operation, and the support plate is fixed to the fixed block by bolts.

[0016] Furthermore, the support plate is threaded with bolts, which are threaded onto the fixing block.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the spring is set on the side of the support plate away from the bolt, so that the user can grip the spring part when using the device.

[0018] Furthermore, a spring clip is fixed to the side of the support plate away from the bolt.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the spring has a certain elasticity, which makes it convenient for the user to hold the device stably.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this invention, the pneumatic compression device is fixed to the limb by a strap. The airbag is positioned by a first hook and loop fastener and a second hook and loop fastener on the strap. After the air pump is started, the airflow enters the fixed block through the air inlet. When the gas pressure is within the set threshold range, the gas directly enters the airbag through the air outlet and the connecting pipe to achieve compression. When the gas pressure exceeds the set threshold, the moving block is pushed to compress the telescopic spring, so that the air outlet is aligned with the pressure relief port, and the gas overflows from the pressure relief port to ensure safety. When the air pressure is restored, the telescopic spring rebounds and the moving block resets, promoting venous return and achieving automatic pressure relief and elastic reset, thus achieving stable and controllable cyclic pressurization. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pneumatic compression device for observing venous return according to this utility model;

[0023] Figure 2 This is a schematic diagram of the extrusion assembly structure of the pneumatic extrusion device for observing venous return according to this utility model;

[0024] Figure 3 This is a schematic diagram of the pneumatic components of the pneumatic compression device for observing venous return according to this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the pneumatic components of the pneumatic compression device for observing venous return according to this utility model;

[0026] Figure 5 This is a schematic diagram of the gripping component of the pneumatic compression device for observing venous return according to this utility model.

[0027] Figure label:

[0028] 1. Straps;

[0029] 2. Compression assembly; 21. Airbag; 22. First hook and loop fastener; 23. Second hook and loop fastener;

[0030] 3. Pneumatic components; 31. Fixed block; 32. Air inlet; 33. Air pump; 34. Moving block; 35. Air outlet; 36. Rubber ring; 37. Telescopic spring; 38. Air outlet; 39. Connecting pipe; 310. Pressure relief port; 311. Screw; 312. Limiting block; 313. Knob;

[0031] 4. Grip assembly; 41. Support plate; 42. Bolt; 43. Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-4 As shown, this embodiment provides a technical solution: a pneumatic compression device for observing venous return, comprising:

[0034] Strap 1;

[0035] The compression assembly 2 includes an airbag 21 disposed on the strap 1, a first hook and loop fastener 22 disposed on the airbag 21, a second hook and loop fastener 23 disposed on the strap 1, and the second hook and loop fastener 23 disposed on the first hook and loop fastener 22.

[0036] The pneumatic assembly 3 includes a fixed block 31 mounted on the strap 1. An air inlet 32 ​​is located on one side of the fixed block 31. An air pump 33 is mounted on the strap 1 near the air inlet 32, with its output end located at the air inlet 32. A movable block 34 is slidably connected within the fixed block 31. An air outlet 34 is provided on the movable block 34, and a telescopic spring 37 is fixed to the movable block 34. The other end of the telescopic spring 37 is fixed to the fixed block 31. An air outlet 38 is provided on the fixed block 31, and a connecting pipe 39 is fixed to the air outlet 38. The other end of the connecting pipe 39 is fixed to the airbag 21. A pressure relief port 310 is provided on the fixed block 31. This pneumatic compression device... The strap 1 is fixed to the limb. The airbag 21 is positioned by the first hook and loop fastener 22 and the second hook and loop fastener 23 on the strap 1. After the air pump 33 is started, the airflow enters the fixed block 31 through the air inlet 32. When the gas pressure is within the set threshold range, the gas directly enters the airbag 21 through the air outlet 38 and the connecting tube 39 to achieve compression. When the gas pressure exceeds the set threshold, the moving block 34 is pushed to compress the telescopic spring 37, so that the air outlet 35 is aligned with the pressure relief port 310. The gas overflows from the pressure relief port 310 to ensure safety. When the air pressure is restored, the telescopic spring 37 rebounds and the moving block 34 resets, promoting venous return and achieving automatic pressure relief and elastic reset, thus achieving stable and controllable cyclic pressurization.

[0037] The above solutions also have the problem of not allowing users to hold the device stably while using it, such as... Figure 1 as well as Figures 3-4 As shown: A rubber ring 36 is fixed on the movable block 34. The rubber ring 36 is installed on the outer edge of the movable block 34 to enhance air tightness. When the movable block 34 slides in the fixed block 31, the rubber ring 36 fits tightly against the inner wall of the fixed block 31 to prevent gas leakage. A screw 311 is threadedly connected to the side of the fixed block 31 away from the air inlet 32. A limit block 312 is fixed to one end of the screw 311 near the movable block 34. A knob 313 is fixed to the other end of the screw 311. The screw 311 is screwed into the fixed block 31 through the thread. The limit block 312 at its front end can limit the maximum displacement of the movable block 34. Rotating the knob 313 can change the position of the limit block 312 to realize the manual adjustment of the pressure threshold.

[0038] like Figure 1 as well as Figure 5As shown, a gripping component 4 is provided on the side of the fixed block 31 near the bottom of the knob 313. The gripping component 4 includes a support plate 41 provided on the fixed block 31. A bolt 42 is threadedly connected to the support plate 41 and the bolt 42 is threadedly connected to the fixed block 31. A spring piece 43 is fixed on the side of the support plate 41 away from the bolt 42. The gripping component 4 is used to assist operation. The support plate 41 is fixed to the fixed block 31 by the bolt 42. The spring piece 43 is provided on the side of the support plate 41 away from the bolt 42. When the user uses the device, he / she can grip the spring piece 43. The spring piece 43 has a certain elasticity, which makes it convenient for the user to hold the device stably.

[0039] Working principle:

[0040] like Figures 1-5 As shown, during use, the device is fixed to the patient's limb by the strap 1. The airbag 21 in the compression assembly 2 is positioned by the first hook and loop fastener 22 and the second hook and loop fastener 23 of the strap 1, ensuring that the airbag 21 stably covers the target area. After the air pump 33 is started, gas enters the fixed block 31 through the air inlet 32. When the air pressure is within the set threshold, the gas directly fills the airbag 21 through the air outlet 38 and the connecting pipe 39 on the fixed block 31, causing the airbag 21 to expand and compress the limb, promoting venous blood return. If the air pressure exceeds the set threshold, the high-pressure gas pushes the moving block 34 to compress the telescopic spring 37, causing the moving block 34 to slide until the air outlet 35 is aligned with the pressure relief port 310. Excess gas overflows from the pressure relief port 310, preventing the airbag 21 from being too pressurized. When the air pressure returns to normal, the telescopic spring 37 rebounds, pushing the moving block 34 back to its original position, achieving self-recovery. The cyclic pressurization process of dynamic depressurization and elastic reset, as the moving block 34 slides within the fixed block 31, the rubber ring 36 fits tightly against the inner wall of the fixed block 31, blocking the gas leakage path, ensuring stable transmission of air pressure, and improving the reliability of the airbag 21's compression effect. Medical personnel can rotate the knob 313 to drive the screw 311 to rotate in or out within the fixed block 31, thereby adjusting the position of the front limit block 312, changing the maximum displacement range of the moving block 34, and achieving manual and precise adjustment of the pressure threshold to adapt to the treatment needs of different patients. In addition, the support plate 41 is fixed to the fixed block 31 by bolts 42, and the outer elastic piece 43 provides a comfortable grip for the user with its own elasticity. When using the device, the user can grip the elastic piece 43, which has a certain elasticity, making it convenient for the user to hold the device stably.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pneumatic compression device for observing venous return, characterized in that, include: Straps (1); The compression assembly (2) includes an airbag (21) disposed on a strap (1), a first hook and loop fastener (22) disposed on the airbag (21), and a second hook and loop fastener (23) disposed on the strap (1), the second hook and loop fastener (23) being disposed on the first hook and loop fastener (22). A pneumatic assembly (3) includes a fixed block (31) disposed on a strap (1), an air inlet (32) disposed on one side of the fixed block (31), an air pump (33) disposed on the side of the strap (1) near the air inlet (32), the output end of the air pump (33) disposed on the air inlet (32), a movable block (34) slidably connected inside the fixed block (31), an air outlet (35) opened on the movable block (34), a telescopic spring (37) fixed on the movable block (34), the other end of the telescopic spring (37) fixed on the fixed block (31), an air outlet (38) disposed on the fixed block (31), a connecting pipe (39) fixed on the air outlet (38), the other end of the connecting pipe (39) fixed on the airbag (21), and a pressure relief port (310) disposed on the fixed block (31).

2. The pneumatic compression device for observing venous return according to claim 1, characterized in that: A rubber ring (36) is fixed on the movable block (34).

3. The pneumatic compression device for observing venous return according to claim 1, characterized in that: A screw (311) is threadedly connected to the side of the fixed block (31) away from the air inlet (32). A limit block (312) is fixed to one end of the screw (311) near the moving block (34), and a knob (313) is fixed to the other end of the screw (311).

4. The pneumatic compression device for observing venous return according to claim 1, characterized in that: A gripping assembly (4) is provided on one side of the fixed block (31) near the bottom of the knob (313), and the gripping assembly (4) includes a support plate (41) provided on the fixed block (31).

5. The pneumatic compression device for observing venous return according to claim 4, characterized in that: The support plate (41) is threaded with bolts (42), which are threaded onto the fixing block (31).

6. The pneumatic compression device for observing venous return according to claim 5, characterized in that: A spring clip (43) is fixed on the side of the support plate (41) away from the bolt (42).

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