A closed drainage device for preventing blockage in thoracic surgery

Abstract

The present invention belongs to the technical field of medical devices, specifically, a thoracic surgery anti-blocking closed nursing drainage device, comprising a drainage tube and a waste liquid collection bucket. The drainage tube comprises a connecting tube and a cannula; an annular sliding layer is provided inside the tube wall at the middle part of the cannula, a plurality of push rods are provided in the sliding layer, a sliding hole is provided on one side of the sliding layer, the axis of the sliding hole is perpendicular to the axis of the cannula, and a rectangular groove is provided on the other side of the sliding layer; elastic No. 1 annular ring and No. 2 annular rings are provided on the outer wall of the cannula; the inner ring of the No. 1 annular ring is fixedly connected to the outer wall of the cannula and covers the position of the sliding hole; the inner ring of the No. 2 annular ring is fixedly connected to the outer wall of the cannula and covers the position of the rectangular groove; an elastic rod is provided in the No. 1 annular ring, one end of the elastic rod is pressed against the inside of the No. 1 annular ring, and the other end of the elastic rod is fixedly connected to one end of the push rod; a push block is provided in the No. 2 annular ring, one end of the push block is pressed against the inside of the No. 2 annular ring, and the other end of the push block is fixedly connected to the other end of the push rod.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular is an anti-blocking closed nursing drainage device for thoracic surgery. Background Art

[0002] Closed chest drainage is to place one end of the drainage tube into the chest cavity, and connect the other end to a water-sealed bottle at a lower position, so as to discharge gas or collect fluid in the chest cavity, so that the lung tissue can reopen and restore function. As a treatment method, it is widely used in the drainage of hemothorax, pneumothorax, empyema and after thoracotomy, and plays a very important role in the treatment of diseases.

[0003] The publication number is CN106178151A, and a thoracic negative pressure drainage device is provided, which includes a fluid collection cavity and a suction tube. The upper part of the fluid collection cavity is designed with an opening, and a closing cover is threadedly assembled on the opening. The lower part of the closing cover is designed with a straight liquid inlet tube that penetrates into the lower part of the fluid collection cavity. The suction tube is connected to the straight liquid inlet tube, and the closing cover is also designed with an air hole; the front end of the suction tube is connected to a rod-shaped puncture head, the front end of the puncture head is sharp, and is made of hard medical materials. There are more than two suction holes evenly distributed on a section of the suction tube close to the puncture head, and the suction holes are connected to the inside of the suction tube.

[0004] The above-mentioned chest negative pressure drainage device inserts a pipette into the patient's position for drainage. This process is a long and continuous process. The pipette is adhered to the wound with medical tape. Since the pipette and the patient's skin are vertically connected, it is difficult for the tape to fix the pipette to the skin. Moreover, the peristalsis, rolling and other movements of the patient's body will affect the fixation of the pipette to the patient's skin.

[0005] To this end, the present invention provides a thoracic surgery anti-blockage closed nursing drainage device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a thoracic surgery anti-blocking closed nursing drainage device described in the present invention comprises a drainage tube and a waste liquid collection bucket; one end of the drainage tube is connected to the waste liquid collection bucket, and the other end of the drainage tube is inserted into the patient's body; the drainage tube comprises a connecting tube and a cannula; one end of the connecting tube is connected to the waste liquid collection bucket, and the other end of the connecting tube is connected to the cannula; a ring-shaped sliding layer is provided inside the tube wall at the middle part of the cannula, and a plurality of push rods are provided in the sliding layer, a sliding hole is provided on one side of the sliding layer, and penetrates to the outside of the cannula, the axis of the sliding hole is perpendicular to the axis of the cannula, and a rectangular groove is provided on the other side of the sliding layer, and the rectangular groove penetrates to the outside of the cannula; an elastic No. 1 annular ring and a No. 2 annular ring are provided on the outer wall of the cannula; the inner ring of the No. 1 annular ring is fixedly connected to the outer wall of the cannula and covers the position of the sliding hole; the inner ring of the No. 2 annular ring is fixedly connected to the outer wall of the cannula and covers the position of the rectangular groove; an elastic rod is provided in the No. 1 annular ring, one end of the elastic rod is pressed against the inside of the No. 1 annular ring, and the elastic rod is elastically pressed against the inside of the No. 1 annular ring. The other end of the elastic rod is fixedly connected to one end of the push rod; a push block is provided in the No. 2 annular ring, one end of the push block is pressed inside the No. 2 annular ring, and the other end of the push block is fixedly connected to the other end of the push rod; first, one end of the cannula is inserted into the patient's wound, and then the No. 2 annular ring is squeezed to push the push block, the push block moves along the rectangular groove, the push block pushes the push rod, and at the same time the push rod pushes the elastic rod, one end of the elastic rod lifts the No. 1 annular ring, the outer edge of the No. 1 annular ring expands and is squeezed on the inner surface of the wound, at this time, the No. 1 annular ring cooperates with the No. 2 annular ring to be squeezed at the wound position, and then cooperates with the self-elastic squeezing of the No. 1 annular ring and the No. 2 annular ring to squeeze and fix the push block and the elastic rod, finally, the medical staff fixes the cannula on the patient's skin through medical tape, and at the same time wraps it around the surface of the No. 2 annular ring to fix the deformation of the No. 2 annular ring, thereby also squeezing and fixing the No. 1 annular ring with the No. 2 annular ring at the wound position, thereby ensuring the stability between the cannula and the patient's wound, and then ensuring stable treatment of the disease.

[0008] Preferably, a pressing block is provided at the outer hole end of the sliding hole, and the pressing block is fixedly connected to the outer wall of the cannula above the sliding hole, and the pressing block is tilted to point to the axis of the sliding hole; in the process of the elastic rod gradually extending outward from the sliding hole, the elastic rod is constrained by the pressing block, and the axis of the elastic rod gradually tends to tilt downward to squeeze the No. 1 annular ring, so that the raised edge of the No. 1 annular ring is tilted downward to squeeze on the patient's body tissue, which helps to improve the stability between the No. 2 annular ring and the patient's wound, thereby further improving the stability of the cannula and the patient's wound.

[0009] Preferably, the No. 2 annular ring includes a ring-shaped top and a bottom; the upper edge of the top is fixed to the outer wall of the cannula, the lower edge of the top is provided with a C-shaped groove, one end of the push block is embedded in the groove, the lower edge of the top is fixed to the middle part, the lower edge of the middle part is fixed to the bottom, and the lower edge of the bottom is fixed to the inner and outer walls of the cannula; in the process of extruding the No. 2 annular ring, the push block is extruded to the top position of the No. 2 annular ring, and one end of the push block is embedded in the groove. At this time, the push block and the No. 2 annular ring are fixed, that is, it is difficult for the push block and the No. 2 annular ring to move relative to each other, and then the medical tape is wrapped around the middle position to fix the deformation of the No. 2 annular ring, thereby improving the stability of the push block, thereby improving the extrusion stability of the elastic rod on the No. 1 annular ring.

[0010] Preferably, the thickness of the middle part is greater than that of the top and bottom parts, and an annular groove is provided on the outer wall of the middle part, in which medical tape is wrapped; the medical tape is wrapped in the annular groove of the middle part, so that the medical tape can be stabilized in the middle part, reducing the possibility of the medical tape sliding off the middle part. At the same time, the setting of the thickness of the middle part reduces the deformation of the middle part after the tape is wrapped, so that the middle part can effectively support and hold up the push block.

[0011] Preferably, a convex portion is provided on the upper half of the inner surface of the middle part; a plurality of anti-slip convex points adapted to the gaps of the convex portions are provided on the arc-shaped back surface of the push block; the No. 2 annular ring is squeezed to push the push block upward, and then the medical tape is wrapped around the middle part, and the middle position is retracted inward toward the axis of the cannula, and at the same time, the convex portion and the anti-slip convex points are embedded together to further improve the stability of the push block, thereby improving the extrusion stability of the No. 1 annular ring by the elastic rod.

[0012] Preferably, the connecting tube is provided with a fixing unit; the fixing unit comprises a ring body, the ring body is sleeved on the connecting tube, an annular recess is provided on the outer ring body, a plurality of rows of through holes are provided on the inner surface of the recess, a fixing rod is provided in the through hole, one end of the fixing rod is placed in the inner ring body, the other end of the fixing rod extends into the recess and is fixed to the inner surface of the recess by a spring sheet, and the other end of the fixing rod is fixed to the connecting plate; a plurality of fixing grooves are provided on the outer ring of the connecting tube, one end of the fixing rod is embedded in the fixing groove; a binding band is wrapped in the recess; the end of the drainage tube is inserted into the patient's wound Finally, according to the surface conditions of the patient's body, slide the ring body to adjust the position of the ring body on the connecting tube, then wrap the strap around the ring body and bond the strap to the skin with medical tape; the strap is wrapped in the recess and squeezes the connecting plate, pressing down the fixing rod, the fixing rod squeezes the spring sheet and is embedded in the fixing groove, at this time the relative movement between the ring body and the connecting tube is fixed; by using the ring body, the connecting tube is bonded and fixed to the skin surface, the ring body supports the connecting tube to prevent the connecting tube from being placed under the patient's body and being squeezed and flattened, resulting in obstruction of gas or liquid flow.

[0013] Preferably, a through groove is provided in the middle of the band body, one end of the band is wound into a circle, sleeved in the recess, and passes through the through groove, and the lower surfaces of the two ends of the band are effective bonding surfaces; the setting of the band allows the two ends of the band to be symmetrically bonded to the skin, and at the same time, the two ends of the band are tightened so that the band is tightly wrapped in the recess, thereby ensuring the stability between the ring body and the connecting tube, and ensuring the stability between the connecting tube and the body.

[0014] Preferably, a plurality of anti-slip tentacles are provided in the middle position of the strap body of the tie strap, and the anti-slip tentacles are fixedly connected to the inner surface position of the strap body of the tie strap; after the tie strap is pulled, the anti-slip tentacles pass through the through grooves, and the ends of the anti-slip tentacles are pressed against the surface of the tie strap, so that the tie strap and the ring body are wrapped around to further fix them, thereby reducing the possibility of the tie strap detaching from the ring body.

[0015] Preferably, a plurality of notches are provided on the outer ring of the ring body, and the notches are provided throughout along the axial direction of the ring body; the bandage is adhered to the body for a long time, and the squeezing of the body and the scraping of other objects make the bandage more and more firm, and when it is removed later, the removal of the bandage is affected by the obstruction of the connecting tube and the ring body, so the notches are provided, and before removing the bandage, surgical scissors are used to insert the tip of the scissors into the bandage from the notch, and then the tip of the bandage is used to remove the ring body and the connecting tube from the body, so that medical staff can remove the bandage more conveniently.

[0016] Preferably, a counterweight is provided at the bottom of the waste liquid collection barrel; by providing the counterweight at the bottom of the waste liquid collection barrel, the stability of the waste liquid collection barrel is enhanced, so that it can be stably placed on the ground, reducing the possibility of being touched and tipped over by foreign objects.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention discloses a thoracic surgery anti-blockage closed nursing drainage device, wherein one end of the elastic rod lifts up the No. 1 annular ring, and the outer edge of the No. 1 annular ring expands and is squeezed on the inner surface of the wound. At this time, the No. 1 annular ring cooperates with the No. 2 annular ring to be squeezed at the wound position, and the No. 1 annular ring and the No. 2 annular ring are squeezed and fixed by their own elastic squeezing, and finally the medical staff fixes the cannula on the patient's skin through medical tape, and at the same time wraps it around the surface of the No. 2 annular ring to fix the deformation of the No. 2 annular ring, thereby squeezing and fixing the No. 1 annular ring and the No. 2 annular ring at the wound position, thereby ensuring the stability between the cannula and the patient's wound, and then ensuring stable treatment of the disease.

[0019] 2. In the thoracic surgery anti-blockage closed nursing drainage device described in the present invention, during the process of the elastic rod gradually extending outward from the sliding hole, the elastic rod is constrained by the lower pressing block, and the axis of the elastic rod gradually tends to tilt downward to squeeze the No. 1 annular ring, so that the raised edge of the No. 1 annular ring is tilted downward to squeeze on the patient's body tissue, which helps to improve the stability between the No. 2 annular ring and the patient's wound, thereby further improving the stability of the intubation tube and the patient's wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereoscopic diagram of the drainage device of the present invention;

[0022] Figure 2 is a cross-sectional view of the matching of the cannula and the connecting tube in the present invention;

[0023] Figure 3 Yes Yes Figure 2 A partial enlarged view of the middle part;

[0024] Figure 4 It is a cross-sectional view of the cooperation between the second annular ring and the push block in the present invention;

[0025] Figure 5 is a stereogram of a ring body in the present invention;

[0026] Figure 6 is a three-dimensional diagram of the tie belt in the present invention;

[0027] Figure 7 is a cross-sectional view of the tie belt of the present invention;

[0028] Figure 8 It is a diagram of the coordination of the counterweight block and the waste liquid collection bucket in the present invention;

[0029] In the figure: drainage tube 1, waste liquid collection bucket 2, connecting tube 3, cannula 4, sliding layer 5, push rod 6, sliding hole 7, rectangular groove 8, No. 1 annular ring 9, No. 2 annular ring 10, elastic rod 11, push block 12, pressing block 13, top 14, middle 15, bottom 16, groove 17, annular groove 18, medical tape 20, convex part 21, anti-slip convex point 22, ring body 23, recess 24, through hole 25, fixing rod 26, spring piece 27, connecting plate 28, fixing groove 29, binding belt 30, through groove 31, anti-slip feeler 32, notch 33, counterweight block 34. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1:

[0032] Reference Figure 1 and Figure 2 A thoracic surgery anti-blockage closed nursing drainage device comprises a drainage tube 1 and a waste liquid collection bucket 2; one end of the drainage tube 1 is connected to the waste liquid collection bucket 2, and the other end of the drainage tube 1 is inserted into the patient's body; the drainage tube 1 comprises a connecting tube 3 and a cannula 4; one end of the connecting tube 3 is connected to the waste liquid collection bucket 2, and the other end of the connecting tube 3 is connected to the cannula 4; a ring-shaped sliding layer 5 is provided inside the tube wall in the middle part of the cannula 4, a plurality of push rods 6 are arranged in the sliding layer 5, a sliding hole 7 is provided on one side of the sliding layer 5, and passes through to the outside of the cannula 4, the axis of the sliding hole 7 is perpendicular to the axis of the cannula 4, a rectangular groove 8 is provided on the other side of the sliding layer 5, and the rectangular groove 8 The insert tube 4 is penetrated to the outside; the insert tube 4 is provided with an elastic No. 1 annular ring 9 and No. 2 annular ring 10 on the outer wall; the inner ring of the No. 1 annular ring 9 is fixedly connected to the outer wall of the insert tube 4 and covers the position of the sliding hole 7; the inner ring of the No. 2 annular ring 10 is fixedly connected to the outer wall of the insert tube 4 and covers the position of the rectangular groove 8; the No. 1 annular ring 9 is provided with an elastic rod 11, one end of the elastic rod 11 is pressed against the inside of the No. 1 annular ring 9, and the other end of the elastic rod 11 is fixedly connected to one end of the push rod 6; the No. 2 annular ring 10 is provided with a push block 12, one end of the push block 12 is pressed against the inside of the No. 2 annular ring 10, and the other end of the push block 12 is fixedly connected to the other end of the push rod 6;

[0033] The first and second annular rings 10 are pressed together to form a pressure-sensitive adhesive tape 20, and the pressure-sensitive adhesive tape 20 is used to press the first and second annular rings 10 together to form a pressure-sensitive adhesive tape 20. The pressure-sensitive adhesive tape 20 is used to press the first and second annular rings 10 together to form a pressure-sensitive adhesive tape 20. The pressure-sensitive adhesive tape 20 is used to press the first and second annular rings 10 together to form a pressure-sensitive adhesive tape 20. The pressure-sensitive adhesive tape 20 is used to press the first and second annular rings 10 together to form a pressure-sensitive adhesive tape 20.

[0034] Reference Figure 1 and Figure 2A pressing block 13 is provided at the outer hole end of the sliding hole 7, and the pressing block 13 is fixedly connected to the outer wall of the cannula 4 above the sliding hole 7, and the pressing block 13 is tilted to point to the axis of the sliding hole 7; in the process of the elastic rod 11 gradually extending outward from the sliding hole 7, the elastic rod 11 is constrained by the pressing block 13, and the axis of the elastic rod 11 gradually tends to tilt downward to squeeze the No. 1 annular ring 9, so that the raised edge of the No. 1 annular ring 9 is tilted downward to squeeze on the patient's body tissue, which helps to improve the stability between the No. 2 annular ring 10 and the patient's wound, thereby further improving the stability of the cannula 4 and the patient's wound.

[0035] Reference Figure 2 and Figure 4 , the No. 2 annular ring 10 includes a ring-shaped top 14, a middle part 15 and a bottom 16; the upper edge of the top 14 is fixed to the outer wall of the cannula 4, the lower edge of the top 14 is provided with a C-shaped groove 17, one end of the push block 12 is embedded in the groove 17, the lower edge of the top 14 is fixed to the middle part 15, the lower edge of the middle part 15 is fixed to the bottom 16, and the lower edge of the bottom 16 is fixed to the inner and outer walls of the cannula 4; in the process of extruding the No. 2 annular ring 10, the push block 12 is extruded to the top 14 position of the No. 2 annular ring 10, one end of the push block 12 is embedded in the groove 17, at this time, the push block 12 and the No. 2 annular ring 10 are fixed, that is, it is difficult for the push block 12 and the No. 2 annular ring 10 to move relative to each other, and then the medical tape 20 is wrapped around the middle part 15 position to deform and fix the No. 2 annular ring 10, thereby improving the stability of the push block 12, thereby improving the extrusion stability of the elastic rod 11 on the No. 1 annular ring 9.

[0036] Reference Figure 4 The thickness of the middle part 15 is greater than that of the top part 14 and the bottom part 16. An annular groove 18 is provided on the outer wall of the middle part 15, and a medical tape 20 is wound in the annular groove 18. The medical tape 20 is wound in the annular groove 18 of the middle part 15, so that the medical tape 20 can be stabilized in the position of the middle part 15, reducing the possibility of the medical tape 20 sliding off the middle part 15. At the same time, the thickness of the middle part 15 is set, so that the deformation of the middle part 15 is reduced after the tape is wound, so that the middle part 15 effectively supports and resists the push block 12.

[0037] Reference Figure 4 A convex portion 21 is provided on the upper half of the inner surface of the middle portion 15; a plurality of anti-slip convex points 22 adapted to the gaps of the convex portions 21 are provided on the arc-shaped back surface of the push block 12; the No. 2 annular ring 10 is squeezed to push the push block 12 upward, and then the middle portion 15 is wrapped with a medical tape 20, and the position of the middle portion 15 is retracted inward toward the axis direction of the cannula 4, and at the same time, the convex portion 21 and the anti-slip convex points 22 are embedded together to further improve the stability of the push block 12, thereby improving the extrusion stability of the elastic rod 11 on the No. 1 annular ring 9.

[0038] Reference Figure 2 , Figure 3 and Figure 5 , the connecting tube 3 is provided with a fixing unit; the fixing unit includes a ring body 23, the ring body 23 is sleeved on the connecting tube 3, the outer ring of the ring body 23 is provided with an annular recess 24, the inner surface of the recess 24 is provided with multiple rows of through holes 25, a fixing rod 26 is provided in the through hole 25, one end of the fixing rod 26 is placed in the inner ring of the ring body 23, the other end of the fixing rod 26 extends into the recess 24 and is fixed to the inner surface of the recess 24 through a spring sheet 27, and the other end of the fixing rod 26 is fixed to the connecting plate 28; the outer ring of the connecting tube 3 is provided with multiple circles of fixing grooves 29, one end of the fixing rod 26 is embedded in the fixing groove 29; a binding band 30 is wrapped in the recess 24; the end of the drainage tube 1 is inserted into the patient After the wound is inside, the ring body 23 is slid to adjust the position of the ring body 23 on the connecting tube 3 according to the surface condition of the patient's body, and then the binding belt 30 is wrapped around the ring body 23, and the binding belt 30 is bonded to the skin with the medical tape 20; the binding belt 30 is wrapped in the recess 24 and squeezes the connecting plate 28, pressing down the fixing rod 26, the fixing rod 26 squeezes the spring piece 27 and is embedded in the fixing groove 29, at this time, the relative movement between the ring body 23 and the connecting tube 3 is fixed; by using the ring body 23, the connecting tube 3 is bonded and fixed to the skin surface, and the ring body 23 supports the connecting tube 3 to prevent the connecting tube 3 from being placed under the patient's body and being squeezed and flattened, resulting in obstruction of gas or liquid flow.

[0039] Reference Figure 6 and Figure 7 A through slot 31 is provided in the middle of the strap body 30, one end of the strap 30 is formed into a circle, sleeved in the recess 24, and passes through the through slot 31, and the lower surfaces of the two ends of the strap 30 are effective bonding surfaces; the setting of the strap 30 makes the two ends of the strap 30 symmetrically bonded to the skin, and at the same time, the two ends of the strap 30 are tightened so that the strap 30 is tightly wrapped in the recess 24, ensuring the stability between the ring body 23 and the connecting tube 3, and ensuring the stability between the connecting tube 3 and the body.

[0040] Reference Figure 7 A plurality of anti-slip tentacles 32 are provided in the middle of the strap body of the tie strap 30, and the anti-slip tentacles 32 are fixedly connected to the inner surface of the strap body of the tie strap 30; after the tie strap 30 is pulled, the anti-slip tentacles 32 pass through the through grooves 31, and the ends of the anti-slip tentacles 32 are pressed against the surface of the tie strap 30, and the tie strap 30 and the ring body 23 are wrapped around for further fixing, thereby reducing the possibility of the tie strap 30 detaching from the ring body 23.

[0041] Reference Figure 5A plurality of notches 33 are provided on the outer ring of the ring body 23, and the notches 33 are provided along the axial direction of the ring body 23; the binding strap 30 is adhered to the body for a long time, and the squeezing of the body and the scratching of other objects make the binding strap 30 more and more firm. When it is peeled off later, the obstruction of the connecting tube 3 and the ring body 23 affects the peeling of the binding strap 30. For this purpose, the notches 33 are provided. Before peeling off the binding strap 30, surgical scissors are used to insert the tip of the scissors into the binding strap 30 from the notch 33, and then the tip of the binding strap 30 is used to remove the ring body 23 and the connecting tube 3 from the body. At this time, medical personnel can remove the binding strap 30 more conveniently.

[0042] Embodiment 2:

[0043] Reference Figure 8 , compared with Example 1, as another embodiment of the present invention, the bottom 16 of the waste liquid collection barrel 2 is provided with a counterweight block 34; by setting the counterweight block 34 at the bottom 16 of the waste liquid collection barrel 2, the stability of the waste liquid collection barrel 2 is enhanced, so that it can be stably placed on the ground, reducing the possibility of being touched and tipped over by foreign objects.

[0044] Working principle: first, insert one end of the cannula 4 into the patient's wound, then squeeze the No. 2 annular ring 10 to push the push block 12, the push block 12 moves along the rectangular groove 8, the push block 12 pushes the push rod 6, and at the same time the push rod 6 pushes the elastic rod 11, one end of the elastic rod 11 lifts the No. 1 annular ring 9, the outer edge of the No. 1 annular ring 9 expands and squeezes on the inner surface of the wound, at this time the No. 1 annular ring 9 cooperates with the No. 2 annular ring 10 to squeeze at the wound position, and then cooperates with the No. 1 annular ring 9 and the No. 2 annular ring 10 to squeeze and fix the push block 12 and the elastic rod 11, finally the medical staff fixes the cannula 4 on the patient's skin through the medical tape 20, and at the same time wraps it around the surface of the No. 2 annular ring 10 to fix the deformation of the No. 2 annular ring 10, so that the No. 1 annular ring 9 cooperates with the No. 2 annular ring 10 to squeeze and fix at the wound position, thereby ensuring the stability between the cannula 4 and the patient's wound, and then ensuring stable treatment of the disease;

[0045] During the process of the elastic rod 11 gradually extending outward from the sliding hole 7, the elastic rod 11 is constrained by the lower pressing block 13, and the axis of the elastic rod 11 gradually tends to tilt downward to press the No. 1 annular ring 9, so that the raised edge of the No. 1 annular ring 9 tilts downward to press on the patient's body tissue, which helps to improve the stability between the No. 2 annular ring 10 and the patient's wound, thereby further improving the stability between the cannula 4 and the patient's wound;

[0046] During the extrusion of the No. 2 annular ring 10, the push block 12 is extruded to the top 14 of the No. 2 annular ring 10, and one end of the push block 12 is embedded in the groove 17. At this time, the push block 12 and the No. 2 annular ring 10 are fixed, that is, it is difficult for the push block 12 and the No. 2 annular ring 10 to move relative to each other. Then, the medical tape 20 is wrapped around the middle 15 to deform and fix the No. 2 annular ring 10, thereby improving the stability of the push block 12, thereby improving the extrusion stability of the elastic rod 11 on the No. 1 annular ring 9;

[0047] The medical tape 20 is wound around the annular groove 18 of the middle part 15, so that the medical tape 20 can be stabilized at the middle part 15, reducing the possibility of the medical tape 20 sliding off the middle part 15. At the same time, the thickness of the middle part 15 is set to reduce the deformation of the middle part 15 after the tape is wound around it, so that the middle part 15 can effectively support the push block 12.

[0048] The second annular ring 10 is squeezed to push the push block 12 upward, and then the middle part 15 is wrapped with the medical tape 20, and the position of the middle part 15 is retracted inwardly toward the axis direction of the cannula 4. At the same time, the convex part 21 and the anti-drop convex point 22 are embedded together to further improve the stability of the push block 12, thereby improving the squeezing stability of the elastic rod 11 on the first annular ring 9;

[0049] After the end of the drainage tube 1 is inserted into the patient's wound, the ring body 23 is slid according to the surface of the patient's body to adjust the position of the ring body 23 on the connecting tube 3, and then the binding belt 30 is wrapped around the ring body 23, and the binding belt 30 is bonded to the skin with the medical tape 20; the binding belt 30 is wrapped in the recess 24, and squeezes the connecting plate 28, presses down the fixing rod 26, and the fixing rod 26 squeezes the spring piece 27 and is embedded in the fixing groove 29, at this time, the relative movement between the ring body 23 and the connecting tube 3 is fixed; by using the ring body 23, the connecting tube 3 is bonded and fixed to the skin surface, and the ring body 23 supports the connecting tube 3 to prevent the connecting tube 3 from being placed under the patient's body and being squeezed and flattened, resulting in obstruction of gas or liquid flow;

[0050] The setting of the tie band 30 enables the two ends of the tie band 30 to be symmetrically bonded to the skin, and at the same time, the two ends of the tie band 30 are tightened so that the tie band 30 is tightly wrapped in the recess 24, ensuring the stability between the ring body 23 and the connecting tube 3, and ensuring the stability between the connecting tube 3 and the body;

[0051] After the tie band 30 is pulled, the anti-slip feeler 32 penetrates the through slot 31, and the end of the anti-slip feeler 32 is pressed on the surface of the tie band 30, so that the tie band 30 and the ring body 23 are further wrapped and fixed, thereby reducing the possibility of the tie band 30 being detached from the ring body 23;

[0052] The bandage 30 is adhered to the body for a long time, and the compression of the body and the scratches of other objects make the bandage 30 more and more firm. When it is removed later, it is affected by the obstruction of the connecting tube 3 and the ring body 23, and the removal of the bandage 30 is affected. For this purpose, a notch 33 is provided. Before removing the bandage 30, surgical scissors are used to insert the tip of the scissors into the bandage 30 from the notch 33, and then the tip of the bandage 30 is used to remove the ring body 23 and the connecting tube 3 from the body. At this time, medical staff can remove the bandage 30 more conveniently.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A thoracic surgery anti-blocking closed nursing drainage device, comprising a drainage tube (1) and a waste liquid collection bucket (2); one end of the drainage tube (1) is connected to the waste liquid collection bucket (2), and the other end of the drainage tube (1) is inserted into the patient's body; characterized in that: The drainage tube (1) comprises a connecting tube (3) and a cannula (4); one end of the connecting tube (3) is connected to the waste liquid collection bucket (2), and the other end of the connecting tube (3) is connected to the cannula (4); a ring-shaped sliding layer (5) is provided inside the tube wall at the middle part of the cannula (4), a plurality of push rods (6) are provided in the sliding layer (5), a sliding hole (7) is provided on one side of the sliding layer (5) and extends to the outside of the cannula (4), the axis of the sliding hole (7) is perpendicular to the axis of the cannula (4), a rectangular groove (8) is provided on the other side of the sliding layer (5), and the rectangular groove (8) extends to the outside of the cannula (4); an elastic No. 1 annular ring (9) and a The second annular ring (10); the inner ring of the first annular ring (9) is fixedly connected to the outer wall of the insert tube (4) and covers the position of the sliding hole (7); the inner ring of the second annular ring (10) is fixedly connected to the outer wall of the insert tube (4) and covers the position of the rectangular groove (8); the first annular ring (9) is provided with an elastic rod (11), one end of the elastic rod (11) is pressed against the inside of the first annular ring (9), and the other end of the elastic rod (11) is fixedly connected to one end of the push rod (6); the second annular ring (10) is provided with a push block (12), one end of the push block (12) is pressed against the inside of the second annular ring (10), and the other end of the push block (12) is fixedly connected to the other end of the push rod (6); The second annular ring (10) comprises a ring-shaped top (14), a middle part (15) and a bottom (16); the upper edge of the top (14) is fixedly connected to the outer wall of the insertion tube (4); the lower edge of the top (14) is provided with a C-shaped groove (17); one end of the push block (12) is embedded in the groove (17); the lower edge of the top (14) is fixedly connected to the middle part (15); the lower edge of the middle part (15) is fixedly connected to the bottom (16); and the lower edge of the bottom (16) is fixedly connected to the inner and outer walls of the insertion tube (4); After the cannula (4) is inserted into the patient's wound and fixed, the second annular ring (10) is squeezed to push the push block (12) into the groove (17), the push block (12) pushes the push rod (6), the push rod (6) pushes the elastic rod (11), the elastic rod (11) extends outward from the slide hole (7), one end of the elastic rod (11) pushes up the first annular ring (9), and the outer edge of the first annular ring (9) expands.

2. A thoracic surgery anti-blockage closed nursing drainage device according to claim 1, characterized in that: A lower pressing block (13) is provided at the outer hole end of the sliding hole (7). The lower pressing block (13) is fixedly connected to the outer wall of the insert tube (4) above the sliding hole (7). The lower pressing block (13) is inclined to point toward the axis of the sliding hole (7).

3. A thoracic surgery anti-blockage closed nursing drainage device according to claim 1, characterized in that: The thickness of the middle portion (15) is greater than the thickness of the top portion (14) and the bottom portion (16). An annular groove (18) is provided on the outer wall of the middle portion (15), and a medical adhesive tape (20) is wound inside the annular groove (18).

4. A thoracic surgery anti-blockage closed nursing drainage device according to claim 1, characterized in that: A convex portion (21) is provided on the upper half of the inner surface of the middle portion (15); and a plurality of anti-slip convex points (22) adapted to the gaps of the convex portion (21) are provided on the arc-shaped back surface of the push block (12).

5. The anti-blocking closed nursing drainage device for thoracic surgery according to claim 1, characterized in that: The connecting tube (3) is provided with a fixing unit; the fixing unit comprises a ring body (23), the ring body (23) is sleeved on the connecting tube (3), an annular recess (24) is provided on the outer ring of the ring body (23), a plurality of rows of through holes (25) are provided on the inner surface of the recess (24), a fixing rod (26) is provided in the through hole (25), one end of the fixing rod (26) is placed in the inner ring of the ring body (23), the other end of the fixing rod (26) extends into the recess (24) and is fixedly connected to the inner surface of the recess (24) via a spring sheet (27), and the other end of the fixing rod (26) is fixedly connected to a connecting plate (28); a plurality of fixing grooves (29) are provided on the outer ring of the connecting tube (3), one end of the fixing rod (26) is embedded in the fixing groove (29); a binding belt (30) is wound in the recess (24).

6. A thoracic surgery anti-blockage closed nursing drainage device according to claim 5, characterized in that: A through slot (31) is provided in the middle of the strap body of the binding strap (30); one end of the binding strap (30) is wound into a circle, sleeved in the recess (24), and passes through the through slot (31); and the lower surfaces of both ends of the binding strap (30) are effective bonding surfaces.

7. A thoracic surgery anti-blockage closed nursing drainage device according to claim 6, characterized in that: A plurality of anti-slip feelers (32) are provided at the middle position of the belt body of the binding belt (30), and the anti-slip feelers (32) are fixedly connected to the inner surface of the belt body of the binding belt (30).

8. The anti-blocking closed nursing drainage device for thoracic surgery according to claim 5, characterized in that: A plurality of notches (33) are provided on the outer ring of the ring body (23), and the notches (33) are provided through the ring body (23) in the axial direction.

9. The anti-blocking closed nursing drainage device for thoracic surgery according to claim 1, characterized in that: A counterweight (34) is provided at the bottom (16) of the waste liquid collection barrel (2).

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