Negative pressure drainage device

Abstract

The utility model provides a negative pressure drainage device which comprises a barrel and a piston column, a butt joint is arranged at one end of the barrel, the other end of the barrel is open, supporting blocks are arranged on the two sides of the inner wall of the other end of the barrel respectively, and clamping columns are arranged on the opposite sides of the two supporting blocks respectively. Clamping plates are arranged on the two sides of the piston column respectively, each clamping plate is provided with a clamping opening, and the clamping columns can be clamped into the corresponding clamping openings by rotating the piston column in the axial direction. The clamping plates on the two sides of the piston column can rotate by rotating the piston column in the axial direction, then the clamping columns are clamped into the corresponding clamping openings, the piston column can be fixed to the current pulling-out position, the situation that the piston column retreats under the action of negative pressure attraction force is prevented, and the negative pressure attraction force in the barrel is kept advantageously.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure drainage, in particular to a negative pressure drainage device. Background Art

[0002] After flap surgery or expander implantation, there is a gap between the tissues at the surgical site or between the skin and the expander, and exudate will occur. Therefore, the exudate needs to be drained to reduce the chance of infection and accelerate the healing of the skin or tissue. At present, a syringe is usually used as a simple negative pressure drainer. The injection port of the syringe is connected to the drainage tube led out from the surgical site, and a continuous negative pressure attraction is formed inside the syringe barrel by pulling out the piston rod to suck out the exudate. However, the piston rod is easily reversely drawn into the syringe barrel due to the negative pressure, resulting in a decrease in the negative pressure in the syringe barrel, which is not conducive to continuous suction of the exudate. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model proposes a negative pressure drainer to solve the above problems.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides a negative pressure drainage device, comprising:

[0006] A cylinder, one end of which is provided with a butt joint and the other end is open, support blocks are respectively provided on both sides of the inner wall of the other end of the cylinder, and clamping columns are respectively provided on the opposite sides of the two support blocks; and

[0007] The piston column has clamping plates on both sides, each of which has a clamping interface. Axial rotation of the piston column can cause the clamping column to be clamped into the corresponding clamping interface.

[0008] Furthermore, the plurality of clamping plates are linearly and evenly distributed on both sides of the piston column.

[0009] Furthermore, the piston column includes a piston head, a handle and multiple connecting sections, each of the connecting sections is provided with a clamping plate on both sides, one end of the connecting section is provided with a T-shaped clamping block and the other end is provided with a T-shaped clamping groove adapted to the T-shaped clamping block, the piston head and the handle are respectively provided with a T-shaped clamping block and a T-shaped clamping groove, and the multiple connecting sections are located between the piston head and the handle and connected end to end.

[0010] Furthermore, both sides of the outer end of the docking joint are connected with clamping plates through a rotating part, and an anti-slip layer is provided on the inner side of the clamping plate. The rotating part can drive the clamping plate to turn outward when no external force is applied, and a movable sleeve is screwed on the outer thread of the docking joint.

[0011] Furthermore, an adhesive patch is provided on the outer side of the cylinder.

[0012] It can be seen from the above technical solution that the utility model provides a negative pressure drainage device:

[0013] 1. Axial rotation of the piston column can cause the clamping plates on both sides of the piston column to rotate, so that the clamping column can be clamped into the corresponding clamping interface, which can fix the piston column at the current pulled-out position, preventing the piston column from retreating due to the negative pressure attraction, which is conducive to maintaining the negative pressure attraction inside the cylinder;

[0014] 2. The piston head, the handle and the connecting section can be connected by sliding the T-shaped blocks radially into the T-shaped grooves. After determining the distance that the piston column is pulled out as a whole, the piston column is rotated as a whole to connect the two side clamps at the corresponding connecting section with the clamp column, and then the redundant connecting section and the handle outside the cylinder are removed, which can shorten the overall length of the device, facilitate placement, and thus help protect the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a cross-sectional view of a schematic diagram of the main structure of an embodiment of a negative pressure drainage device of the utility model;

[0017] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0018] Figure 3 for Figure 1 A partial enlarged view of point B in the middle:

[0019] Cylinder 1, docking head 11, rotating part 111, clamping piece 112, anti-slip layer 113, moving sleeve 114, supporting block 12, clamping column 121, adhesive patch 13;

[0020] The piston column 2 , the clamping plate 21 , the clamping interface 211 , the piston head 22 , the handle 23 , the connecting section 24 , the T-shaped clamping block 25 , and the T-shaped clamping groove 26 . DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] like Figure 1-3 As shown, a negative pressure drainage device provided in this embodiment includes a cylinder 1 and a piston column 2.

[0025] One end of the cylinder 1 is provided with a joint 11 and the other end is open, and both sides of the inner wall of the other end of the cylinder 1 are provided with support blocks 12 respectively, and the opposite sides of the two support blocks 12 are provided with clamping columns 121 respectively.

[0026] Preferably, the cylinder 1 is provided with scales to facilitate recording of daily drainage volume.

[0027] like Figure 3 As shown, in one embodiment, both sides of the outer end of the docking joint 11 are connected with clamping pieces 112 through the rotating part 111 respectively. The clamping piece 112 is arc-shaped, and its outer side is consistent with the arc of the outer side of the docking joint 11. The inner side of the clamping piece 112 is provided with an anti-skid layer 113, and the anti-skid layer 113 can be specifically made of rubber or silicone material, and the rotating part 111 can be made of elastic plastic, and the rotating part 111 can drive the clamping piece 112 to turn outward when not subjected to external force, and the outer side of the docking joint 11 is screwed with a movable sleeve 114. When used specifically, the outer end of the drainage tube led out from the surgical site is connected to the docking joint 11, and the movable sleeve 114 is screwed in so that the inner wall of the movable sleeve 114 can be pushed inward to tighten the two clamping pieces 113, so that the anti-skid layer 113 on the inner side of the two clamping pieces 113 is pressed against the outer wall of the drainage tube, thereby clamping the drainage tube, which is beneficial to prevent the drainage tube and the docking joint 11 from slipping off.

[0028] Preferably, an adhesive patch 13 is provided on the outer side of the barrel 1, and the barrel 1 can be attached to the skin near the surgical site through the adhesive patch 13 to prevent the barrel 1 from shaking or becoming disconnected from the drainage tube.

[0029] Clamping plates 21 are respectively provided on both sides of the piston column 2 , and a clamping interface 211 is provided on each clamping plate 21 . Axially rotating the piston column 2 can cause the clamping column 121 to be clamped into the corresponding clamping interface 211 .

[0030] During specific use, the drainage tube is docked with the docking head 11 to connect the cylinder 1 with the tissue gap of the surgical site, and then the piston column 2 is pulled outward to form a negative pressure space in the cylinder 1 to form a continuous negative pressure attraction. If exudate is generated in the surgical site, the exudate will be promptly sucked into the cylinder 1 through the drainage tube. Axial rotation of the piston column 2 can cause the clamping plates 21 on both sides of the piston column 2 to rotate, and then the clamping column 121 can be clamped into the corresponding clamping interface 211, which can fix the piston column 2 at the current pulled-out position to prevent the piston column 2 from retreating due to the negative pressure attraction, which is beneficial to maintaining the negative pressure attraction inside the cylinder 1.

[0031] Furthermore, multiple clamping plates 21 are linearly and evenly distributed on both sides of the piston column 2. During specific use, the size of the negative pressure attraction force in the cylinder 1 can be adjusted by changing the distance that the piston column 2 is pulled out of the cylinder 1, and then the clamping plates 21 at the corresponding positions are rotated and docked with the clamping columns 121 according to the position where the piston column 2 is pulled out, thereby realizing multi-level adjustment of the negative pressure attraction force.

[0032] like Figure 1 As shown, in one embodiment, the piston column 2 includes a piston head 22, a handle 23 and a plurality of connecting sections 24, each connecting section 24 is provided with a clamping plate 21 on both sides, one end of the connecting section 24 is provided with a T-shaped clamping block 25 and the other end is provided with a T-shaped clamping groove 26 adapted to the T-shaped clamping block 25, the two connecting sections 24 are connected end to end through each other's T-shaped clamping blocks 25 and T-shaped clamping grooves 26, the piston head 22 and the handle 23 are respectively provided with T-shaped clamping blocks 25 and T-shaped clamping grooves 26, which can be connected to the head and tail ends of the connecting section 24, and the plurality of connecting sections 24 are located between the piston head 22 and the handle 23 and connected end to end. During specific use, the piston head 22, the handle 23 and the connecting section 24 can be connected by sliding the T-shaped blocks 25 of each other radially into the T-shaped slots 26. After determining the distance that the piston column 2 is pulled out as a whole, the piston column 2 is rotated as a whole to connect the two side clamps 21 at the corresponding connecting section 24 with the clamping column 121, and then the redundant connecting section 24 and the handle 23 outside the cylinder 1 are removed, which can shorten the overall length of the device, facilitate placement, and thus help protect the device.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A negative pressure drainage device, characterized in that: include: A cylinder, one end of which is provided with a butt joint and the other end is open, support blocks are respectively provided on both sides of the inner wall of the other end of the cylinder, and clamping columns are respectively provided on the opposite sides of the two support blocks; and The piston column has clamping plates on both sides, each of which is provided with a clamping interface. Axial rotation of the piston column can cause the clamping column to be clamped into the corresponding clamping interface.

2. A negative pressure drainage device according to claim 1, characterized in that: The plurality of clamping plates are linearly and evenly distributed on both sides of the piston column.

3. A negative pressure drainage device according to claim 2, characterized in that: The piston column includes a piston head, a handle and multiple connecting sections, each of which is provided with a clamping plate on both sides, one end of the connecting section is provided with a T-shaped clamping block and the other end is provided with a T-shaped clamping groove adapted to the T-shaped clamping block, the piston head and the handle are respectively provided with a T-shaped clamping block and a T-shaped clamping groove, and the multiple connecting sections are located between the piston head and the handle and connected end to end.

4. A negative pressure drainage device according to claim 1, characterized in that: The outer ends of the butt joint are connected with clamping plates via rotating parts respectively, and the inner side of the clamping plate is provided with an anti-skid layer. The rotating part can drive the clamping plate to turn outward when no external force is applied, and the outer side of the butt joint is screwed with a movable sleeve.

5. The negative pressure drainage device according to claim 1, characterized in that: An adhesive patch is arranged on the outer side of the cylinder.

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