Negative pressure drainage device and drainage method

Abstract

The negative pressure drainage device comprises an air pressure balloon, a drainage tube and a drainage needle, the air pressure balloon is connected with the drainage needle through the drainage tube, a tip is arranged at the end of the drainage needle, a drainage hole is formed in the tip of the drainage needle, an air bag is arranged on the outer side of the drainage needle, the air bag is communicated with the drainage needle through an air valve, and a center ball is arranged in the middle in the drainage needle. The outer side of the central ball is connected with a side ball through a flexible wire; a drainage bottle is arranged on the rear side of the air pressure balloon; by means of the air bag, the air pressure balloon is pinched, air in the air pressure balloon enters the drainage needle and enters the air bag, the problem that the air in the drainage needle flows out of the drainage hole, and consequently a surgical wound bulges is solved or reduced, and exudate can be discharged easily; in addition, the air bag plays a blocking role, flowing of the percolate to other positions is reduced, flowing of the percolate to the drainage hole is facilitated, and therefore the percolate is conveniently led out. In addition, the air bag presses the wound surface, so that exudation of exudate of an operation part is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of negative pressure drainage, and in particular relates to a negative pressure drainage device and a drainage method. Background Art

[0002] During plastic surgery or other surgical procedures, a negative pressure drainage device is used to drain and collect exudate exudated during the operation, and the amount of fluid drained is used as a reference to assess the course and outcome of the operation.

[0003] With regard to the negative pressure drainage device, in the actual implementation process, it was found that there are areas that need to be improved in the existing negative pressure drainage device: when the air pressure balloon is squeezed to facilitate the suction of exudate at a later stage, the gas in the air pressure balloon will enter the wound in large quantities through the trachea and the air needle, which can easily cause internal wound bulging. In addition, it also makes it inconvenient to discharge the exudate. Summary of the invention

[0004] In view of the shortcomings and defects in the prior art, the purpose of the present invention is to provide a negative pressure drainage device, which solves the problem that when the air pressure balloon is squeezed to facilitate the suction of exudate in the later stage, the gas in the air pressure balloon will enter the wound in large quantities through the trachea and the air needle, easily causing internal wound bulging, and also making it inconvenient to discharge the exudate.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a negative pressure drainage device, comprising an air pressure balloon, a drainage tube and a drainage needle, the air pressure balloon is connected to the drainage needle through the drainage tube, the end of the drainage needle is provided with a tip, the tip of the drainage needle is provided with a drainage hole, the outside of the drainage needle is provided with an air bag that can slide along the length direction of the drainage needle, the air bag and the drainage needle are connected through an air valve, a central ball is provided in the middle part of the drainage needle, and a plurality of side balls are connected to the outside of the central ball through a soft wire, a drainage bottle is provided on the rear side of the air pressure balloon, and the air pressure balloon and the drainage bottle are connected through a liquid valve.

[0006] As a further improvement of the present invention, a slip ring is slidably provided on the outer side of the drainage needle, and the air bag is fixed on the slip ring.

[0007] As a further improvement of the present invention, the cross-sectional shape of the air bag is ingot-shaped, and the notch of the air bag faces the front side of the airflow needle.

[0008] As a further improvement of the present invention, a conical clamping ring is provided at the rear end of the inner side of the drainage needle, and a flow hole is provided on the clamping ring. The minimum hole diameter of the clamping ring is larger than the diameter of the central ball.

[0009] As a further improvement of the present invention, a negative pressure pump is provided on one side of the upper portion of the air pressure balloon.

[0010] As a further improvement of the present invention, a magnetic sticker is provided on the inner wall of the drainage needle, and a magnetic bead is provided on the side ball.

[0011] As a further improvement of the present invention, the drainage tube is a hose.

[0012] As a further improvement of the present invention, a scale is provided on the drainage bottle.

[0013] The drainage method using a negative pressure drainage device for drainage comprises the following steps: (1) pushing the drainage bag backward to the rear end and inserting the drainage needle into the surgical wound site;

[0014] (1) Squeeze the air pressure balloon, and the gas in the air pressure balloon enters the drainage needle through the drainage tube. The gas entering the drainage needle pushes the central ball and the side balls forward, and finally the central ball blocks the drainage hole, reducing the gas from flowing out of the drainage hole to the surgical wound. At the same time, the gas enters the air bag from the air valve, making the air bag bulge. The bulging air bag can firstly stretch the surgical tissue to avoid tissue adhesion and facilitate the drainage flow of exudate to the drainage hole. Second, it can block the exudate at the back to prevent the exudate from flowing backwards. Third, it can press the tissue near the wound to reduce the exudate.

[0015] (2) Slide the air bag forward, and the air bag pushes the exudate toward the drainage hole to facilitate the drainage of the exudate;

[0016] (3) After the air pressure balloon is released, the exudate at the surgical wound surface flows into the drainage needle under the action of negative pressure, and finally flows from the drainage needle through the drainage tube into the air pressure balloon, and then flows from the air pressure balloon to the drainage bottle; and when the exudate flows in the drainage needle, it can push the central ball and the side balls to move backward. When the central ball and the side balls move, agitation is generated to increase the fluidity of the exudate and reduce the adhesion of the exudate, which is convenient for the drainage of the exudate. At the same time, the side balls can scrape off the exudate adhering to the side wall of the drainage needle;

[0017] (4) After the drainage is completed, the drainage needle is removed and the air bag is slid back and forth to clean the outside of the drainage needle. Then, the air bag is slid forward and the air valve is opened. The air bag releases gas into the drainage needle and the gas in the air bag flows into the drainage needle, pushing the exudate remaining in the drainage needle and the drainage tube toward the drainage bottle.

[0018] The drainage method of draining surgical fluids through a negative pressure drainage device can reduce the entry of gas into the surgical wound and reduce the impact of the surgical part. In addition, it is convenient to drain the exudate, reduce or avoid the adhesion of the exudate in the drainage needle, and reduce the residual exudate in the drainage needle or drainage tube, thereby improving the measurement accuracy of the exudate.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The present invention provides an air bag on the outside of the drainage needle. When the air pressure balloon is squeezed, the gas in the air pressure balloon enters the drainage needle and then enters the air bag. The setting of the air pressure balloon, firstly, when the air pressure balloon is squeezed, the problem of storing and transferring the gas in the drainage needle is achieved, avoiding or reducing the gas in the drainage needle flowing out from the drainage hole to the surgical wound position, thereby causing the surgical wound to bulge, improving the recovery of the surgical wound, and reducing tissue adhesion, which is conducive to the discharge of exudate; secondly, it plays a blocking role. After the gas enters the air bag and makes the air bag bulge, the air bag can be against the tissue near the surgical wound, reducing the flow of exudate to other positions, which is conducive to the flow of exudate to the drainage hole, thereby facilitating the drainage of exudate; thirdly, it plays a role in pressing the wound surface and reducing the seepage of exudate in the surgical part; fourthly, it plays a role in The first is to push the exudate to flow toward the drainage hole. Slide the air bag forward, and the air bag will push the exudate to flow toward the drainage hole, which is convenient for the full drainage of the exudate. The second is to clean the adhesions on the outside of the drainage needle. After the drainage is completed, take out the drainage needle and push the air bag to slide. The air bag can clean the adhesions on the outside of the drainage needle, which is convenient for the cleaning of the drainage needle. The third is to promote the discharge of residual exudate in the drainage needle and drainage tube. After the drainage is completed, a small amount of exudate will remain in the drainage needle and drainage tube. By opening the air valve and squeezing the air bag, the gas in the air bag will be blown into the drainage needle and drainage tube, so that the residual exudate in the drainage needle and drainage tube is discharged into the air pressure balloon and finally enters the drainage bottle, which is convenient for accurately estimating the amount of exudate and reducing the residual liquid in the drainage needle and drainage tube, which is convenient for cleaning.

[0021] In addition, by arranging a central ball and side balls in the drainage needle, it can play a role in blocking the drainage hole. After the air pressure balloon exhausts air into the drainage needle, the gas in the drainage needle will push the central ball and the side balls to move forward until the central ball blocks the drainage hole, thereby reducing the discharge of gas from the drainage hole to the wound surface; in addition, when the air pressure balloon is released and the exudate enters the drainage needle, the exudate will push the central ball and the side balls backward. During the backward flow, the central ball and the side balls stir the exudate to reduce the adhesion of the exudate, and scrape the inner wall of the drainage needle to reduce the adhesion of the exudate on the inner wall of the drainage needle.

[0022] 2. A slip ring is arranged on the outside of the drainage needle, and the air bag is fixed on the slip ring, thereby facilitating the sliding adjustment of the air bag.

[0023] 3. By setting the cross-sectional shape of the air bag to a Yuanbao shape, it is convenient to block the exudate from flowing backwards, and to push the exudate to flow toward the drainage port during movement, thereby facilitating the drainage of the exudate.

[0024] 4. By providing a clamping ring at the inner rear end of the drainage needle, the side balls can be blocked from flowing backwards to a certain extent, so that the side balls and the center ball form a rotating ring, thereby being able to perform a certain adhesion and segmentation of the exudate.

[0025] 5. By arranging a negative pressure pump on the air pressure balloon, when the negative pressure controlled by the air pressure balloon is insufficient, the negative pressure in the air pressure balloon can be increased by adjusting the negative pressure pump to promote drainage.

[0026] 6. By arranging a magnetic sticker on the inner wall of the drainage needle and a magnetic bead on the side ball, it is convenient for the side ball to be supported on the inner wall of the drainage needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 for Figure 1 A magnified view at point A;

[0030] Figure 3 for Figure 1 Enlarged view at B;

[0031] Figure 4 It is a schematic diagram of the structure of the center ball and the side ball;

[0032] In the figure: 1. air pressure balloon; 2. drainage tube; 3. drainage needle; 4. tip; 5. drainage hole; 6. air bag; 7. center ball; 8. drainage bottle; 9. liquid valve; 10. slip ring; 11. retaining ring; 12. flow hole; 13. air valve; 14. vent hole; 15. scale; 16. side ball; 17. soft wire; 18. negative pressure pump; 19. valve. DETAILED DESCRIPTION

[0033] The following is combined with Figure 2-4 The present invention is further described in detail. For a clearer illustration, only the structures related to the inventive point of the present invention are shown in the figure.

[0034] For the convenience of description, the coordinate system is defined as Figure 2 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0035] The embodiment of the present invention discloses a negative pressure drainage device. Figure 1 A negative pressure drainage device comprises an air pressure balloon 1, a drainage tube 2 and a drainage needle 3, wherein the air pressure balloon 1 is connected to the drainage needle 3 through the drainage tube 2, and the drainage tube 2 is a hose. Figure 1 and Figure 3As shown, the end of the drainage needle 3 is provided with a tip 4, and the tip 4 of the drainage needle 3 is provided with a drainage hole 5. The outer side of the drainage needle 3 is provided with an air bag 6 that can slide along the length direction of the drainage needle 3. Specifically, the outer side of the drainage needle 3 is slidably provided with a slip ring 10, and the slip ring 10 can be provided with a power device, such as a driving motor (not shown in the figure), as shown in FIG. Figure 2 and Figure 3 As shown, the air bag 6 is fixed on the slip ring 10 to facilitate the sliding adjustment of the air bag 6. The air bag 6 can be connected to the drainage needle 3 through the air valve 13, that is, the air valve 13 is provided at the rear end of the drainage needle 3, and the slip ring 10 is provided with a vent 14. When the slip ring 10 slides to the air valve 13 of the drainage needle 3, the air valve 13 is opened, and the air bag 6 can be connected to the drainage needle 3.

[0036] In addition, a negative pressure pump 18 is provided on one side of the upper part of the air pressure balloon 1. When the negative pressure controlled by the air pressure balloon is insufficient, the negative pressure in the drainage bottle 8 is increased by adjusting the negative pressure pump 18 to promote drainage. In addition, an air pump can be added to the negative pressure pump to adjust the air pressure in multiple directions. In addition, a controllable valve 19 can be provided at the drainage hole. When the air bag is squeezed to exhaust air into the drainage needle, the valve 19 can be closed to prevent gas from being discharged from the drainage hole.

[0037] In addition, if Figure 1 and Figure 4 As shown, a central ball 7 is provided in the middle of the drainage needle 3, and a plurality of side balls are connected to the outside of the central ball 7 through a soft wire 17. A magnetic sticker is provided on the inner wall of the drainage needle 3, and a magnetic bead is provided on the side ball 16, so that the side ball 16 and the drainage needle 3 have a certain attraction to prevent the side ball 16 from detaching from the inner wall of the drainage needle 3, that is, it is convenient for the side ball 16 to be supported and attached to the inner wall of the drainage needle 3, so that the side ball 16 and the central ball 7 can move in a balanced manner in the drainage needle 3. A drainage bottle 8 is provided at the rear side of the air pressure balloon 1, and the air pressure balloon 1 and the drainage bottle 8 are connected through a liquid valve 9. When the liquid valve 9 is opened, the liquid in the air pressure balloon 1 can enter the drainage bottle 8. In addition, a scale 15 is provided on the drainage bottle 8 to facilitate the measurement of the amount of liquid in the drainage bottle 8, so as to provide a basis for judging and analyzing the surgical results.

[0038] In addition, if Figure 1 As shown, the cross-sectional shape of the air bag 6 is ingot-shaped, and the notch of the air bag 6 faces the front side of the airflow needle, which is convenient for blocking the exudate from flowing backwards, and convenient for pushing the exudate to flow toward the drainage port when moving, so as to facilitate the drainage of the exudate.

[0039] In addition, a conical clamping ring 11 is provided at the rear end of the inner side of the drainage needle 3, and a flow hole 12 is provided on the clamping ring 11. The minimum aperture of the clamping ring 11 is larger than the diameter of the central ball 7. The setting of the clamping ring 11 can block the side ball 16 from flowing backward to a certain extent. The side ball 16 and the central ball 7 form a rotating ring form, thereby being able to perform a certain adhesion and separation of the exudate.

[0040] By providing the air bag 6 on the outside of the drainage needle 3, when the air pressure balloon 1 is squeezed, the gas in the air pressure balloon 1 enters the drainage needle 3 and then enters the air bag 6. The setting of the air pressure balloon 1, firstly, when the air pressure balloon 1 is squeezed, the problem of storing and transferring the gas in the drainage needle 3 is achieved, and the problem of bulging of the surgical wound caused by the gas in the drainage needle 3 flowing out from the drainage hole 5 to the surgical wound is avoided or reduced, and the recovery of the surgical wound is improved, and the adhesion of the tissue is reduced, which is conducive to the discharge of the exudate; secondly, it plays a blocking role. After the gas enters the air bag 6 and makes the air bag 6 bulge, the air bag 6 can be against the tissue near the surgical wound, reducing the flow of the exudate to other positions, which is conducive to the flow of the exudate to the drainage hole 5, thereby facilitating the drainage of the exudate; thirdly, it plays a role in pressing the wound and reducing the seepage of the exudate in the surgical part; fourthly, it plays a role in pushing the exudate to the drainage hole 5 The first is to promote the flow of fluid, slide the air bag 6 forward, and the air bag 6 will push the exudate to flow toward the drainage hole 5, which is convenient for the full drainage of the exudate; the second is to clean the adhesion on the outside of the drainage needle 3. After the drainage is completed, the drainage needle 3 is taken out and the air bag 6 is pushed to slide, so that the air bag 6 can clean the adhesion on the outside of the drainage needle 3, which is convenient for the cleaning of the drainage needle 3; the third is to promote the discharge of residual exudate in the drainage needle 3 and the drainage tube 2. After the drainage is completed, a small amount of exudate will remain in the drainage needle 3 and the drainage tube 2. By opening the air valve 13 and squeezing the air bag 6, the gas in the air bag 6 will be blown into the drainage needle 3 and the drainage tube 2, so that the residual exudate in the drainage needle 3 and the drainage tube 2 is discharged into the air pressure balloon 1, and finally enters the drainage bottle 8, reducing the liquid residue in the drainage needle 3 and the drainage tube 2, which is not only convenient for cleaning the drainage needle 3, but also convenient for accurately estimating the amount of exudate.

[0041] In addition, by arranging the central ball 7 and the side balls in the drainage needle 3, firstly, the drainage hole 5 can be blocked. After the air pressure balloon 1 exhausts air into the drainage needle 3, the gas in the drainage needle 3 will push the central ball 7 and the side balls to move forward until the central ball 7 blocks the drainage hole 5, thereby reducing the discharge of gas from the drainage hole 5 to the wound surface; in addition, when the air pressure balloon 1 is released, after the exudate enters the drainage needle 3, the exudate will push the central ball 7 and the side balls 16 backward. In the process of flowing backward, the central ball 7 and the side balls 16 stir the exudate to reduce the adhesion of the exudate, and scrape the inner wall of the drainage needle 3 to reduce the adhesion of the exudate on the inner wall of the drainage needle 3.

[0042] The drainage method using a negative pressure drainage device includes the following steps:

[0043] (1) Push the drainage bag backward to the rear end and insert the drainage needle 3 into the surgical wound;

[0044] (2) Pinch the air pressure balloon 1, and the gas in the air pressure balloon 1 enters the drainage needle 3 through the drainage tube 2. The gas entering the drainage needle 3 pushes the central ball 7 and the side balls to move forward, and finally the central ball 7 blocks the drainage hole 5, reducing the gas from flowing out of the drainage hole 5 to the surgical wound. At the same time, the gas enters the air bag 6 from the air valve 13, making the air bag 6 bulge. The bulging air bag 6 firstly stretches the surgical tissue to avoid tissue adhesion and facilitates the drainage flow of exudate to the drainage hole 5. Secondly, it blocks the exudate at the rear side to prevent the exudate from flowing backwards. Thirdly, it can press the tissue near the wound to reduce the exudate.

[0045] (3) Slide the air bag 6 forward, and the air bag 6 pushes the exudate toward the drainage hole 5 to facilitate the drainage and outflow of the exudate;

[0046] (4) After releasing the air pressure balloon 1, the exudate at the surgical wound surface flows into the drainage needle 3 under the action of negative pressure, and finally flows from the drainage needle 3 through the drainage tube 2 into the air pressure balloon 1, and then flows from the air pressure balloon 1 to the drainage bottle 8; and when the exudate flows in the drainage needle 3, it can push the central ball 7 and the side balls 16 to move backward. When the central ball 7 and the side balls 16 move, agitation is generated to increase the fluidity of the exudate and reduce the adhesion of the exudate, which is convenient for the drainage of the exudate. At the same time, the side balls 16 can scrape off the exudate adhering to the side wall of the drainage needle 3;

[0047] (5) After the drainage is completed, the drainage needle 3 is removed, and the air bag 6 is slid forward and backward, so that the air bag 6 cleans the outside of the drainage needle 3; then, the air bag 6 is slid forward, and the air valve 13 is opened. The air bag 6 releases gas into the drainage needle 3, and the gas in the air bag 6 flows into the drainage needle 3, pushing the exudate remaining in the drainage needle 3 and the drainage tube 2 toward the drainage bottle 8.

[0048] The drainage method of draining surgical fluid through a negative pressure drainage device can reduce the entry of gas into the surgical wound and reduce the impact of the surgical part. In addition, it is convenient to drain the exudate, reduce or avoid the adhesion of the exudate in the drainage needle 3, and reduce the residual exudate in the drainage needle 3 or the drainage tube 2, thereby improving the measurement accuracy of the exudate.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A negative pressure drainage device, comprising an air pressure balloon, a drainage tube and a drainage needle, wherein the air pressure balloon is connected to the drainage needle through the drainage tube, and the end of the drainage needle is provided with a sharp tip, characterized in that: A drainage hole is provided at the tip of the drainage needle, an air bag which can slide along the length direction of the drainage needle is provided on the outside of the drainage needle, the air bag is connected to the drainage needle through an air valve, a central ball is provided in the middle of the drainage needle, a plurality of side balls are connected to the outside of the central ball through soft wires, a drainage bottle is provided on the rear side of the air pressure balloon, and the air pressure balloon and the drainage bottle are connected through a liquid valve.

2. A negative pressure drainage device according to claim 1, characterized in that: A slip ring is slidably arranged on the outer side of the drainage needle, and the air bag is fixed on the slip ring.

3. A negative pressure drainage device according to claim 2, characterized in that: The cross-sectional shape of the air bag is ingot-shaped, and the notch of the air bag faces the front side of the airflow needle.

4. A negative pressure drainage device according to claim 1, characterized in that: A conical clamping ring is arranged at the rear end of the inner side of the drainage needle, and a flow hole is arranged on the clamping ring. The minimum hole diameter of the clamping ring is larger than the diameter of the central ball.

5. A negative pressure drainage device according to claim 1, characterized in that: A negative pressure pump is arranged on one side of the upper part of the air pressure balloon.

6. A negative pressure drainage device according to claim 1, characterized in that: A magnetic sticker is arranged on the inner wall of the drainage needle, and a magnetic bead is arranged on the side ball.

7. A negative pressure drainage device according to claim 1, characterized in that: The drainage tube is a hose.

8. The negative pressure drainage device according to claim 1, characterized in that: A scale is arranged on the drainage bottle.

9. A drainage method using the negative pressure drainage device as claimed in claim 1, comprising the following steps: (1) pushing the drainage bag backward to the rear end and inserting the drainage needle into the surgical wound position; (2) Squeeze the air pressure balloon. The gas in the air pressure balloon enters the drainage needle through the drainage tube. The gas entering the drainage needle pushes the center ball and the side balls forward, and finally the center ball blocks the drainage hole, reducing the gas from flowing out of the drainage hole to the surgical wound. At the same time, the gas enters the air bag from the air valve, making the air bag bulge. The bulging air bag can firstly stretch the surgical tissue to avoid tissue adhesion and facilitate the drainage flow of exudate to the drainage hole. Second, it can block the exudate at the back to prevent the exudate from flowing backwards. Third, it can press the tissue near the wound to reduce the exudate. (3) Slide the air bag forward, and the air bag pushes the exudate toward the drainage hole to facilitate the drainage of the exudate; (4) After the air pressure balloon is released, the exudate at the surgical wound surface flows into the drainage needle under the action of negative pressure, and finally flows from the drainage needle through the drainage tube into the air pressure balloon, and then flows from the air pressure balloon to the drainage bottle; and when the exudate flows in the drainage needle, it can push the central ball and the side balls to move backward. When the central ball and the side balls move, agitation is generated to increase the fluidity of the exudate and reduce the adhesion of the exudate, which is convenient for the drainage of the exudate. At the same time, the side balls can scrape off the exudate adhering to the side wall of the drainage needle; (5) After the drainage is completed, the drainage needle is removed and the air bag is slid back and forth to clean the outside of the drainage needle. Then, the air bag is slid forward and the air valve is opened. The air bag releases gas into the drainage needle and the gas in the air bag flows into the drainage needle, pushing the exudate remaining in the drainage needle and the drainage tube toward the drainage bottle.

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