Negative pressure drainage device

Abstract

A negative pressure drainage device comprises a vertical negative pressure cylinder barrel made of transparent materials, the upper side of the barrel body is sealed and provided with a drainage pipe connector, the lower side of the barrel body is open, and containing marks are marked on the outer wall of the barrel body. The lower end of the piston is connected with a piston rod with equidistant pin holes, and a pin shaft penetrates through the pin holes to fix the position of the piston so as to maintain negative pressure. The device is further provided with a spring clamp, and can be conveniently fixed to clothes. Another embodiment adopts a multi-connected structure, a plurality of side-by-side negative pressure cylinders are linked with the piston rods through the synchronous pull plate to realize synchronous control of multiple drainage points, and the pin shaft penetrates through the pin holes at the same height of the piston rods to ensure consistent pressure. According to the device, the color and volume of drainage liquid are visually observed through the transparent cylinder barrel, scales are accurate, negative pressure is adjustable, errors caused by spherical deformation of an existing drainage ball are avoided, the structure is portable, the device is particularly suitable for multiple drainage scenes, and clinical monitoring efficiency and operation safety are improved.

Description

Technical Field

[0001] The invention relates to a negative pressure drainage device. Background Art

[0002] Most surgical operations require negative pressure drainage. Existing negative pressure drainage methods mostly use negative pressure drainage balls for drainage. The structure and principle of the negative pressure drainage ball are described in Chinese patent CN201310473389.7. Existing negative pressure drainage balls are mostly translucent, and the color of the drainage fluid cannot be clearly observed. Moreover, although the existing negative pressure drainage balls also have scales, when the negative pressure is maintained, the drainage ball is squeezed. Since the drainage ball itself is deformed, it is impossible to accurately record the drainage volume directly through the scale on the drainage ball. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a negative pressure drainage device, which can clearly observe the color of the drainage fluid through the transparent negative pressure cylinder and accurately read the volume of the drainage fluid, thereby facilitating an accurate judgment of the condition.

[0004] In order to solve the above technical problems, the present invention provides a negative pressure drainage device, comprising a negative pressure cylinder made of transparent material and arranged vertically, the negative pressure cylinder being in the shape of a vertically arranged cylinder, and the upper side of the negative pressure cylinder is sealed and the lower side is open, the upper side of the negative pressure cylinder is provided with a pipe joint for connecting a drainage tube that is connected to the inner cavity of the negative pressure cylinder, a capacity scale is provided on the outer wall of the negative pressure cylinder, and a spring clip is connected by a short rope, a piston matching the negative pressure cylinder is provided in the negative pressure cylinder, the lower end of the piston is connected to a piston rod extending vertically downward, the lower end of the piston rod exceeds the corresponding negative pressure cylinder, the piston rod is provided with a plurality of pin holes passing through it in the left and right directions, and the plurality of pin holes are arranged at equal intervals in the vertical direction on the piston rod, a horizontally arranged pin shaft matching the pin hole is provided below the negative pressure cylinder, the pin shaft passes through the pin hole in the left and right directions and is interference fit with the pin hole, the left and right ends of the pin shaft exceed the pin hole and one of the ends is provided with a plug, and the length of the pin shaft is greater than the diameter of the negative pressure cylinder.

[0005] For the purpose of simplifying the description, the negative pressure drainage device described in the present invention is referred to as the present device below.

[0006] How to use this device: the initial position of the piston is at the uppermost side of the negative pressure cylinder, and the nut is unscrewed and the pin is removed. When in use, first connect the drainage tube to the pipe joint, and then pull the piston rod downward to establish negative pressure in the negative pressure cylinder for drainage. After the piston rod is pulled to the specified position, the pin is passed through the pin hole located closest to the lower side of the cylinder in the left and right directions. At this time, the piston position is limited by the position of the pin, and the negative pressure cylinder can maintain a negative pressure state for drainage. The entire device is clamped on the clothing near the drainage tube through the spring clip, and then the color and amount of the drainage fluid are recorded regularly as required.

[0007] Advantages of this device: The color of the drainage fluid can be clearly observed through the transparent negative pressure cylinder, and the volume of the drainage fluid can be accurately read, which is convenient for making an accurate judgment on the condition. According to the different negative pressure requirements of the negative pressure drainage, the size of the negative pressure can be controlled by controlling the downward amount of the piston. The plug of the pin shaft can be conveniently held in hand for operation. The whole device can be clamped on the clothing near the drainage tube through the spring clip, which is easy to carry.

[0008] In order to solve the above technical problems, the present invention also provides a negative pressure drainage device, comprising a plurality of negative pressure cylinders made of transparent material and arranged vertically, the negative pressure cylinders being in the shape of a vertically arranged cylinder, and the upper side of the negative pressure cylinders being sealed and the lower side being open, the plurality of negative pressure cylinders being connected side by side in the left and right directions, the upper side of each negative pressure cylinder being provided with a pipe joint for connecting a drainage tube which is connected to the inner cavity of the negative pressure cylinder, the outer wall of each negative pressure cylinder being provided with a capacity scale, the outer side of the wall of at least one negative pressure cylinder being connected to a spring clip by a short rope, each negative pressure cylinder being provided with a piston matching the negative pressure cylinder, the lower end of each piston being connected to a piston rod extending vertically downward, and all piston rods The lower ends all extend beyond the corresponding negative pressure cylinders and are commonly connected to a horizontally arranged synchronous pull plate with a left-right longitudinal direction. Each piston rod is provided with a number of pin holes passing through it in the left-right direction, and a number of pin holes are arranged at equal intervals in the vertical direction on each piston rod. The pin holes on each piston rod are in a one-to-one corresponding positional relationship in the left-right direction. A horizontally arranged pin shaft matching the pin holes is provided under the negative pressure cylinder. The pin shaft passes through all the pin holes at the same height in sequence in the left-right direction and is interference fit with the pin holes. The right end of the pin shaft extends beyond the right edge of the rightmost piston rod, and the left end of the pin shaft extends beyond the left edge of the leftmost piston rod. A plug is provided on one side of the left-right direction of the pin shaft.

[0009] Compared with the previous scheme, this scheme adopts a multi-unit structure, and the lower end of the piston rod is commonly connected to a synchronous pull plate. The synchronous pull plate can control the synchronous movement of all pistons and maintain the same negative pressure. After connecting multiple drainage tubes one by one to each pipe joint in this scheme, pull the synchronous pull plate downward to establish negative pressure in the negative pressure cylinder for drainage. After the synchronous pull plate is pulled to the specified position, the pin shaft is passed through all the pin holes of the same height that are closest to the lower side of the cylinder in the left and right directions, and interference fit with them. At this time, the piston position is limited by the limit of the pin shaft, and the negative pressure cylinder can maintain a negative pressure state for drainage. The entire device is clamped on the clothing near the drainage tube by a spring clip, and then the color and amount of the drainage fluid are recorded regularly as required.

[0010] Compared with the previous solution, this solution is more suitable for patients who need multiple drainage sites. It can provide integrated drainage, is more portable, and is also convenient for comparing wound recovery status through drainage fluid status in clinical practice.

[0011] Preferably, the distance between the left edge of the leftmost negative pressure cylinder and the rightmost edge of the rightmost negative pressure cylinder is a, and the total length of the pin and the plug is b, satisfying a>b.

[0012] The overall length of the pin is lower than the overall width of the negative pressure cylinder in the left and right directions. This can prevent the pin from protruding from the negative pressure cylinder and causing accidental scratches during use, thereby ensuring smooth and stable drainage operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional structural diagram of embodiment 1.

[0014] Figure 2 It is a front view of the first embodiment.

[0015] Figure 3 It is a schematic cross-sectional structural diagram of the second embodiment.

[0016] Figure 4 It is the front view of embodiment 2. DETAILED DESCRIPTION

[0017] Example 1:

[0018] See also Figure 1 、 Figure 2A negative pressure drainage device comprises a negative pressure cylinder 1 made of transparent material and arranged vertically. The negative pressure cylinder 1 is in the shape of a vertical cylinder, and the upper side of the negative pressure cylinder 1 is sealed and the lower side is open. The upper side of the negative pressure cylinder 1 is provided with a pipe joint 11 connected to the inner cavity of the negative pressure cylinder 1 for connecting the drainage tube. The outer wall of the negative pressure cylinder 1 is provided with a capacity scale 12, and a spring clip 14 is connected to it through a short rope 13. The negative pressure cylinder 1 is provided with a piston 2 matching the negative pressure cylinder 1, and the lower end of the piston 2 is connected to a vertical downward extending The piston rod 21 and the lower end of the piston rod 21 extend beyond the corresponding negative pressure cylinder 1. The piston rod 21 is provided with a plurality of pin holes 22 passing through it in the left and right directions. The plurality of pin holes 22 are arranged at equal intervals in the vertical direction on the piston rod 21. A horizontally arranged pin shaft 3 is provided below the negative pressure cylinder 1 and matches the pin hole 22. The pin shaft 3 passes through the pin hole 22 in the left and right directions and has an interference fit with the pin hole 22. The left and right ends of the pin shaft 3 extend beyond the pin hole 22 and a plug 31 is provided at one end. The length of the pin shaft 3 is greater than the diameter of the negative pressure cylinder 1.

[0019] How to use this device: the initial position of the piston 2 is at the uppermost side of the negative pressure cylinder 1, and the nut is unscrewed to remove the pin 3. When in use, first connect the drainage tube to the pipe joint 11, and then pull the piston rod 21 downward to establish negative pressure in the negative pressure cylinder 1 for drainage. After the piston rod 21 is pulled to the specified position, the pin 3 is passed through the pin hole 22 located closest to the lower side of the cylinder in the left and right directions. At this time, the position of the piston 2 is limited by the limit of the pin 3, and the negative pressure cylinder 1 can maintain a negative pressure state for drainage. The entire device is clamped on the clothing near the drainage tube through the spring clip 14, and then the color and amount of the drainage fluid are recorded regularly as required.

[0020] Advantages of this device: Through the transparent negative pressure cylinder 1, the color of the drainage fluid can be clearly observed, and the volume of the drainage fluid can be accurately read, which is convenient for making an accurate judgment on the condition of the patient. According to the different negative pressure requirements of the negative pressure drainage, the size of the negative pressure can be controlled by controlling the downward amount of the piston 2. The plug 31 of the pin shaft 3 can be conveniently held for operation. The entire device can be clamped on the clothing near the drainage tube through the spring clip 14, which is easy to carry.

[0021] Example 2:

[0022] See also Figure 3 、 Figure 4, a negative pressure drainage device, comprising several negative pressure cylinders 1 made of transparent material and arranged vertically (a double connection is taken as an example in this embodiment), the negative pressure cylinders 1 are vertically arranged cylindrical, and the upper side of the negative pressure cylinder 1 is sealed and the lower side is open, the several negative pressure cylinders 1 are connected side by side in the left and right directions, and the upper side of each negative pressure cylinder 1 is provided with a pipe joint 11 for connecting a drainage tube connected to the inner cavity of the negative pressure cylinder 1, and a capacity scale 12 is provided on the outer wall of each negative pressure cylinder 1. A spring clip 14 is connected to the outer side of the wall of at least one negative pressure cylinder 1 through a short rope 13, and a piston 2 matching the negative pressure cylinder 1 is provided in each negative pressure cylinder 1. The lower end of each piston 2 is connected to a piston rod 21 extending vertically downward, and the lower ends of all piston rods 21 exceed the corresponding The corresponding negative pressure cylinder 1 is commonly connected to a horizontally arranged synchronous pull plate 4 with a length direction running left and right. Each piston rod 21 is provided with a plurality of pin holes 22 passing through it in the left and right directions. The plurality of pin holes 22 are arranged at equal intervals in the vertical direction on each piston rod 21. The pin holes 22 on each piston rod 21 are in a one-to-one corresponding positional relationship in the left and right directions. A horizontally arranged pin shaft 3 is provided below the negative pressure cylinder 1 and matches the pin hole 22. The pin shaft 3 passes through all the pin holes 22 of the same height in sequence in the left and right directions and is interference fit with the pin hole 22. The right end of the pin shaft 3 exceeds the right edge of the piston rod 21 located on the far right, and the left end of the pin shaft 3 exceeds the left edge of the piston rod 21 located on the far left. A plug 31 is provided on one side of the left and right directions of the pin shaft 3.

[0023] Assume that the left edge of the leftmost negative pressure cylinder 1 and the rightmost edge of the rightmost negative pressure cylinder 1 are spaced apart in the left-right direction as a, and the total length of the pin 3 and the plug 31 is spaced apart in the left-right direction as b, satisfying a>b.

[0024] Compared with the previous scheme, this scheme adopts a multi-unit structure, and the lower end of the piston rod 21 is commonly connected to a synchronous pull plate 4. The synchronous pull plate 4 can control the synchronous movement of all pistons 2 and maintain the same negative pressure. After connecting multiple drainage tubes one by one to each pipe joint 11 in this scheme, pull the synchronous pull plate 4 downward to make the negative pressure cylinder 1 establish negative pressure for drainage. After the synchronous pull plate 4 is pulled to the specified position, the pin shaft 3 is passed through all the pin holes 22 of the same height that are closest to the lower side of the cylinder in the left and right directions, and interference fit with them. At this time, the position of the piston 2 is limited under the limit of the pin shaft 3, and the negative pressure cylinder 1 can maintain a negative pressure state for drainage. The entire device is clamped on the clothing near the drainage tube through the spring clip 14, and then the drainage fluid color and drainage fluid volume are recorded regularly as required.

[0025] Compared with the previous solution, this solution is more suitable for patients who need multiple drainage sites. It can provide integrated drainage, is more portable, and is also convenient for comparing wound recovery status through drainage fluid status in clinical practice.

[0026] The overall length of the pin 3 is lower than the overall width of the negative pressure cylinder 1 in the left and right directions. This can prevent the pin 3 from protruding from the negative pressure cylinder 1 and causing accidental scratches during use, thereby ensuring smooth and stable drainage operations.

Claims

1. A negative pressure drainage device, characterized in that: The invention also comprises a negative pressure cylinder made of transparent material and arranged vertically, wherein the negative pressure cylinder is in the shape of a vertically arranged cylinder, and the upper side of the negative pressure cylinder is sealed and the lower side is open, and a pipe joint for connecting a drainage tube is provided on the upper side of the negative pressure cylinder, which is connected to the inner cavity of the negative pressure cylinder, and a capacity scale is provided on the outer wall of the negative pressure cylinder, and a spring clip is connected by a short rope, and a piston matching the negative pressure cylinder is provided in the negative pressure cylinder, and the lower end of the piston is connected to a piston rod extending vertically downward, and the lower end of the piston rod exceeds the corresponding negative pressure cylinder, and the piston rod is provided with a plurality of pin holes passing through it in the left and right directions, and the plurality of pin holes are arranged at equal intervals in the vertical direction on the piston rod, and a horizontally arranged pin shaft matching the pin hole is provided below the negative pressure cylinder, and the pin shaft passes through the pin hole in the left and right directions and is interference fit with the pin hole, and the left and right ends of the pin shaft exceed the pin hole and one of the ends is provided with a plug, and the length of the pin shaft is greater than the diameter of the negative pressure cylinder.

2. A negative pressure drainage device, characterized in that: The invention comprises a plurality of negative pressure cylinders made of transparent material and arranged vertically, wherein the negative pressure cylinders are in the shape of a vertically arranged cylinder, and the upper side of the negative pressure cylinders is sealed and the lower side is open, and the plurality of negative pressure cylinders are connected side by side in the left and right directions, and the upper side of each negative pressure cylinder is provided with a pipe joint for connecting a drainage tube which is connected to the inner cavity of the negative pressure cylinder, and a capacity scale is provided on the outer wall of each negative pressure cylinder, and a spring clip is connected to the outer side of the wall of at least one negative pressure cylinder by a short rope, and a piston matching the negative pressure cylinder is provided in each negative pressure cylinder, and the lower end of each piston is connected to a piston rod extending vertically downward, and the lower ends of all piston rods extend beyond the corresponding negative pressure cylinder and They are commonly connected to a horizontally arranged synchronous pull plate with a left-right longitudinal direction. Each piston rod is provided with a number of pin holes passing through it in the left-right direction. The pin holes are evenly spaced in the vertical direction on each piston rod. The pin holes on each piston rod are in a one-to-one corresponding positional relationship in the left-right direction. A horizontally arranged pin shaft matching the pin holes is provided under the negative pressure cylinder. The pin shaft passes through all the pin holes at the same height in sequence in the left-right direction and has an interference fit with the pin holes. The right end of the pin shaft extends beyond the right edge of the rightmost piston rod, and the left end of the pin shaft extends beyond the left edge of the leftmost piston rod. A plug is provided on one side of the pin shaft in the left-right direction.

3. The negative pressure drainage device according to claim 2, characterized in that: Assume that the left edge of the leftmost negative pressure cylinder and the rightmost edge of the rightmost negative pressure cylinder are separated by a, and the total length of the pin and the plug are separated by b, satisfying a>b.

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