Drainage device for cardiovascular surgery

Abstract

The application discloses a drainage device for cardiovascular surgery and belongs to the technical field of medical devices, which comprises a drainage tube, one end of the drainage tube is provided with a negative pressure generator, the other end of the drainage tube is provided with a suction tube in communication, and the outer side of the drainage tube is provided with a support structure; the support structure comprises a plurality of support rings, the support rings located at both ends are detachably connected with the end portions of the drainage tube; a plurality of connecting lines penetrating all the support rings in sequence are fixed on the support ring located at one end; a plurality of positioning holes for the corresponding connecting lines to pass through are arranged on the support ring located at the other end, a limiting structure for limiting the sliding of the connecting lines is arranged on the support ring, and an elastic supporting piece is arranged between the connecting line and the support ring; the purpose lies in solving the problem that the flexible material drainage tube is easily affected by the internal and external pressure difference or mechanical collision and is flattened, thereby affecting the normal use of the drainage device.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to a drainage device for heart and blood vessel surgery. BACKGROUND

[0002] Cardiovascular surgery is a clinical department set up for the diagnosis and treatment of cardiovascular diseases, and the diseases treated include cardiovascular diseases such as angina pectoris, hypertension, sudden death, arrhythmia, heart failure, premature beat, arrhythmia, myocardial infarction, cardiomyopathy, myocarditis and acute myocardial infarction.

[0003] After cardiovascular surgery, a drainage device is needed to guide the pus, blood and liquid accumulated between human tissues or in the body cavity to the outside of the body to prevent postoperative infection and affect wound healing. The drainage device is generally made of flexible material, but the flexible drainage tube is easily crushed by internal and external pressure difference or mechanical impact, which affects the normal use of the drainage device. SUMMARY

[0004] Therefore, the application discloses a drainage device for heart and blood vessel surgery, which aims to solve the problem that the flexible drainage tube is easily crushed by internal and external pressure difference or mechanical impact, which affects the normal use of the drainage device.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0006] A drainage device for heart and blood vessel surgery, comprising a drainage tube, one end of the drainage tube is provided with a negative pressure generator, the other end of the drainage tube is provided with a suction tube in communication, the outer side of the drainage tube is provided with a support structure; the support structure comprises a plurality of support rings, the support rings located at both ends are detachably connected with the end portions of the drainage tube; a plurality of connecting lines which sequentially penetrate all the support rings are fixed on the support ring located at one end; a plurality of positioning holes for the corresponding connecting lines to pass through are provided on the support ring located at the other end, a limiting structure for limiting the sliding of the connecting lines is provided on the support ring, and an elastic support member is provided between the connecting line and the support ring; a plurality of hollow support rods are provided between adjacent support rings, the support rods are slidably sleeved on the corresponding connecting lines, and support balls are slidably sleeved on both ends of the support rods; a plurality of spherical cavities for installing the support balls are provided on both sides of the support ring, and cavities for accommodating the end portions of the support rods are provided between the spherical cavities adjacent in the axial direction of the support ring.

[0007] In the scheme, the support structure is installed on the drainage tube, the limiting structure is removed from the connection line, the support rings at both ends are stretched, the support rings at both ends are connected and fixed with the two ends of the drainage tube, and then the drainage tube is bent, and the suction tube is placed in the effusion; in the process, the support ball and the spherical cavity are matched, the support rod can be deflected in any direction relative to the support ring, and the support rod can slide relative to the support ball, so that the relative movement between the support rings can be realized, and then the support rings can move synchronously with the bending of the drainage tube; after the drainage device is installed, the limiting structure limits the sliding of the connection line relative to the end support ring, so that the connection line remains tight, and then the movement between the adjacent support rings is limited, so that the support rod and the support ring are used to support and limit the drainage tube, and the drainage tube is prevented from being crushed or moving; then the negative pressure generator generates negative pressure in the drainage tube to perform suction.

[0008] The support structure in the scheme can be applied to drainage tubes of various lengths, and can also support and limit the curved drainage tube to prevent the drainage tube from being crushed due to internal and external pressure difference or mechanical collision, and ensure the normal use of the drainage device.

[0009] Further, the end of the suction tube is threadedly connected with a closing block, and a plurality of recesses are formed in the inner side of the suction tube along the axis direction, the recesses are slidably provided with baffles, the middle part of the baffle is provided with a suction hole, a through groove is formed in the middle part of the recess for connecting the suction tube with the outside, and the length of the through groove is less than the length of the baffle; the end of the baffle facing the drainage tube is provided with a hollow floating block.

[0010] In the scheme, the suction hole is arranged on the baffle, so that the suction tube can suck the effusion through multiple suction holes, can suck in a larger range, and can provide suction efficiency. At the same time, the baffle closes the through groove, the floating block always floats on the liquid surface of the effusion, the buoyancy acting on the floating block drives the baffle to slide, so that the suction hole on the baffle always remains below the liquid surface of the effusion, and when the liquid surface of the effusion drops to a certain degree, part of the suction hole is exposed to the effusion, which reduces the internal and external pressure of the drainage tube, and the effusion cannot be effectively sucked.

[0011] Further, two grooves are arranged symmetrically about the suction hole in the baffle along the axis of the suction pipe, a regulating groove is arranged in the middle of each groove and communicates with the suction hole, a regulating plate for shielding the suction hole is slidably connected in each regulating groove, and an elastic support is arranged between the regulating plate and the regulating groove; a regulating rod is slidably connected to the regulating plate along the axis of the suction pipe, the regulating rod extends into the recess cavity through the grooves at both ends, and the end of the regulating rod close to the drainage rod is slidably connected to the end of the recess cavity along the circumferential direction of the suction pipe; a push block that extends into the corresponding recess cavity is slidably connected to the end of the sealing block along the circumferential direction of the suction pipe, the push block is wedge-shaped, a wedge-shaped block that matches the shape of the push block is arranged on the regulating rod, and the bottoms of the adjacent grooves communicate with each other.

[0012] In the scheme, when it is necessary to quickly suck the effusion, the sealing block is rotated forward, the push block at the end of the sealing block is moved towards the drainage pipe, the push block extrudes the wedge-shaped block, the wedge-shaped block drives the regulating rod to move away from the suction hole, the regulating plate moves synchronously with the regulating rod, the suction hole is exposed more, the effective suction area of the suction hole is increased, and the suction speed of the effusion is accelerated; when it is necessary to slowly suck the effusion, the sealing block is rotated reversely, the sealing block is separated from the wedge-shaped block, the wedge-shaped block drives the regulating rod and the regulating plate to move reversely under the action of the elastic reset member, the suction hole is partially closed, the effective suction area of the suction hole is reduced, and the suction speed of the effusion is slowed down.

[0013] Further, a plurality of through holes that communicate with the corresponding positioning holes are arranged on the circumferential side of the positioning ring along the axial direction thereof, the limiting structure comprises a slide rod that is coaxially and slidably connected in the through hole, and an elastic reset member is arranged between the slide rod and the through hole; an annular block is coaxially and rotatably connected to the circumferential side of the positioning ring, a plurality of accommodation cavities for accommodating the slide rod are arranged on the inner wall of the annular block, and the longitudinal section of the accommodation cavity is arc-shaped.

[0014] Further, the end of the sealing block is arc-shaped.

[0015] Further, the two ends of the supporting rod are provided with anti-disengagement protrusions.

[0016] Further, the inner wall of the regulating plate and the connecting rod is provided with a rubber pad layer.

[0017] Other advantages, objects, and features of the present application will be apparent from the following specification and claims. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the objectives, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for illustration:

[0019] Figure 1 It is a structural schematic view of the embodiment of the present application;

[0020] Figure 2 It is a structural schematic view of the embodiment of the present application; Figure 1 It is an enlarged schematic view of A in the middle;

[0021] Figure 3 It is a longitudinal sectional view of the embodiment of the present application;

[0022] Figure 4 It is a structural schematic view of the embodiment of the present application; Figure 3 It is an enlarged schematic view of B in the middle;

[0023] Figure 5 It is a structural schematic view of the suction pipe in the embodiment of the present application;

[0024] Figure 6 It is a longitudinal sectional view of the ring-shaped block in the embodiment of the present application.

[0025] In the drawings, the following are marked: drainage tube 1, negative pressure generator 2, suction pipe 3, support ring 4, connecting line 5, elastic support 6, support rod 7, support ball 8, sealing block 9, baffle 10, suction hole 11, suspension block 12, adjusting plate 13, adjusting rod 14, pushing block 15, wedge-shaped block 16, sliding rod 17, elastic reset member 18, anti-dropping protrusion 19, groove 20, ring-shaped block 21, accommodating cavity 22. DETAILED DESCRIPTION

[0026] As Figures 1-6 shown:

[0027] A drainage device for heart and blood vessel surgery, comprising a drainage tube 1, one end of the drainage tube 1 is provided with a negative pressure generator 2, the other end of the drainage tube 1 is provided with a suction pipe 3 in communication, and a support structure is sleeved outside the drainage tube 1; the support structure comprises a plurality of support rings 4, wherein the support rings 4 located at both ends are detachably connected with the end portions of the drainage tube 1; a plurality of connecting lines 5 are fixed on the support ring 4 located at one end and sequentially penetrate all the support rings 4; a plurality of positioning holes are provided on the support ring 4 located at the other end for the corresponding connecting lines 5 to pass through, a limiting structure for limiting the sliding of the connecting lines 5 is arranged on the support ring 4, and an elastic support 6 is arranged between the connecting line 5 and the support ring 4; a plurality of hollow support rods 7 are arranged between adjacent support rings 4, the support rod 7 is slidably sleeved on the corresponding connecting line 5, and a support ball 8 is slidably sleeved on both ends of the support rod 7; a plurality of spherical cavities for installing the support ball 8 are provided on both sides of the support ring 4, and a cavity for accommodating the end portion of the support rod 7 is provided between the axially adjacent spherical cavities along the support ring 4.

[0028] In the scheme, the support structure is installed on the drainage tube 1, the limiting structure is removed from the connection line 5, the support ring 4 at both ends is stretched, the support ring 4 at both ends is connected and fixed with the drainage tube 1 at both ends, then the drainage tube 1 is bent, and the suction tube 3 is placed in the effusion; in the process, the support ball 8 is matched with the spherical cavity, the support rod 7 can be deflected in any direction relative to the support ring 4, and the support rod 7 can slide relative to the support ball 8, so that the relative movement between the support rings 4 can occur, and then the support rings 4 move synchronously with the bending of the drainage tube 1; after the drainage device is installed, the limiting structure limits the sliding of the connection line 5 relative to the end support ring 4, so that the connection line 5 remains tight, and then the movement between the adjacent support rings 4 is limited, so that the support rod 7 and the support ring 4 are used to support and limit the drainage tube 1, and the drainage tube 1 is prevented from being flattened or moving; then the negative pressure generator 2 generates negative pressure in the drainage tube 1 to perform suction.

[0029] The support structure in the scheme can be applied to drainage tubes 1 of various lengths, and can also support and limit the curved drainage tube 1, prevent the drainage tube 1 from being flattened due to internal and external pressure difference or mechanical collision, and ensure the normal use of the drainage device.

[0030] In the embodiment, the end of the suction tube 3 is threadedly connected with a closing block 9, a plurality of recesses are formed in the inner side of the suction tube 3 along the axial direction, a baffle 10 is slidably arranged in each recess, an inhalation hole 11 is formed in the middle of the baffle 10, a through groove is formed in the middle of the recess for connecting the suction tube 3 with the outside, and the length of the through groove is less than the length of the baffle 10; and the end of the baffle 10 facing the drainage tube 1 is provided with a hollow floating block 12.

[0031] In the scheme, the inhalation hole 11 is arranged on the baffle 10, so that the suction tube 3 can suck the effusion through the plurality of inhalation holes 11, can suck in a larger range, and can provide suction efficiency. At the same time, the baffle 10 closes the through groove, the floating block 12 always floats on the liquid surface of the effusion, the buoyancy acting on the floating block 12 drives the baffle 10 to slide, so that the inhalation hole 11 on the baffle 10 always remains below the liquid surface of the effusion, and when the liquid surface of the effusion drops to a certain degree, part of the inhalation hole 11 is exposed to the effusion, which causes the internal and external pressure of the drainage tube 1 to decrease, and the effusion cannot be effectively sucked.

[0032] In the embodiment, two grooves 20 symmetrical to the suction hole 11 are arranged in the baffle 10 along the axial direction of the suction pipe 3, and an adjusting groove communicating with the suction hole 11 is arranged in the middle of each groove 20. An adjusting plate 13 for shielding the suction hole 11 is slidably connected in each adjusting groove. An elastic supporting member 6 (conventional technical means, not shown in the figure) is arranged between the adjusting plate 13 and the adjusting groove. An adjusting rod 14 is slidably connected to the adjusting plate 13 along the axial direction of the suction pipe 3. The adjusting rod 14 extends into the recess through the grooves 20 at both ends, and the end of the adjusting rod 14 close to the drainage rod is slidably connected to the end of the recess along the circumferential direction of the suction pipe 3. A push block 15 extending into the corresponding recess is slidably connected to the end of the sealing block 9 along the circumferential direction of the suction pipe 3. The push block 15 is wedge-shaped. A wedge-shaped block 16 matching the shape of the push block 15 is arranged on the adjusting rod 14. The bottoms of the adjacent grooves 20 are communicated.

[0033] In the scheme, when rapid suction of effusion is needed, the push block 15 at the end of the sealing block 9 is moved towards the drainage pipe 1 by forward rotation of the sealing block 9. The wedge-shaped block 16 is pressed by the push block 15, and the adjusting rod 14 is moved away from the suction hole 11. The adjusting plate 13 moves synchronously with the adjusting rod 14, and the suction hole 11 is exposed more, the effective suction area of the suction hole 11 is increased, and the suction speed of the effusion is accelerated. When slow suction of effusion is needed, the sealing block 9 is rotated in the opposite direction, and the sealing block 9 is separated from the wedge-shaped block 16. The wedge-shaped block 16 moves in the opposite direction under the action of the elastic supporting member 6, and the adjusting rod 14 and the adjusting plate 13 are moved in the opposite direction. The suction hole 11 is partially closed, the effective suction area of the suction hole 11 is reduced, and the suction speed of the effusion is slowed down. For convenient operation, a gear meshing with the outer wall of the sealing block 9 is arranged on the outer wall of the suction pipe 3, and the gear is driven by a motor to rotate the sealing block 9. In addition, conventional technical means are not described in detail and not shown in the figure.

[0034] In the embodiment, a plurality of through holes communicating with the corresponding positioning holes are arranged on the circumferential side of the positioning ring along the axial direction thereof. The limiting structure includes a slide rod 17 coaxially and slidably connected in the through hole, and an elastic reset member 18 is arranged between the slide rod 17 and the through hole. An annular block 21 is coaxially and rotatably connected to the circumferential side of the positioning ring. A plurality of accommodating cavities 22 for accommodating the slide rod 17 are arranged on the inner wall of the annular block 21. The longitudinal section of the accommodating cavity 22 is arc-shaped.

[0035] In the scheme, when the connecting line 5 needs to be moved, the annular block 21 is only needed to be rotated in the forward direction, so that the accommodating cavities 22 on the annular block 21 are opposite to the slide rod 17. The slide rod 17 slides into the accommodating cavity 22 under the action of the elastic reset member 18, and the slide rod 17 does not press the connecting line 5. When the connecting line 5 needs to be limited, the annular block 21 is only needed to be rotated in the opposite direction, so that the inner wall of the annular block 21 pushes the slide rod 17 to press the connecting line 5.

[0036] In the embodiment, the end of the closing block 9 is arc-shaped.

[0037] The arc-shaped end of the closing block 9 can reduce the scratch on the patient's body.

[0038] In the embodiment, the support rod 7 is provided with anti-disengagement protrusions 19 at both ends.

[0039] The anti-disengagement protrusions 19 can prevent the support rod 7 from disengaging from the support ball 8.

[0040] In the embodiment, the adjusting plate 13 and the inner wall of the connecting rod are both provided with rubber pads (conventional technical means, not shown in the figure).

[0041] The rubber pads can reduce the abrasion on the connecting wire 5.

[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A drainage device for cardiovascular surgery, characterized in that: The device includes a drainage tube, one end of which is equipped with a negative pressure generator, and the other end of which is connected to a suction tube. A support structure is fitted around the outside of the drainage tube. The support structure includes several support rings, with the support rings at both ends detachably connected to the ends of the drainage tube. Several connecting lines are fixed on one end of the support ring, passing through all the support rings in sequence. Several positioning holes are provided on the support ring at the other end for the corresponding connecting lines to pass through. The support ring is equipped with a limiting structure to restrict the sliding of the connecting lines, and elastic support members are provided between the connecting lines and the support ring. Several hollow support rods are provided between adjacent support rings, and the support rods are slidably fitted onto the corresponding connecting lines. Support balls are slidably fitted at both ends of the support rods. Several spherical cavities for installing support balls are opened on both sides of the support rings, and cavities for accommodating the ends of the support rods are opened between adjacent spherical cavities along the axial direction of the support rings. A sealing block is threaded to the end of the suction tube, and several... The device has several recessed cavities, each containing a slidably mounted baffle. Each baffle has a suction hole in its center and a through groove in its center connecting the suction tube to the outside. The length of the through groove is less than the length of the baffle. A hollow suspension block is located at the end of the baffle facing the drainage tube. Two grooves symmetrically arranged about the suction hole are formed along the axial direction of the suction tube within the baffle. Each groove has an adjustment groove communicating with the suction hole in its center. An adjustment plate for shielding the suction hole is slidably connected within each adjustment groove. An elastic support is also provided between the adjustment plate and the adjustment groove. An adjustment rod is slidably connected along the axial direction of the suction tube on the adjustment plate. Both ends of the adjustment rod extend into the recessed cavity through the grooves, with the end of the adjustment rod near the drainage rod slidably connected to the end of the recessed cavity along the circumferential direction of the suction tube. A wedge-shaped push block is slidably connected to the end of the sealing block along the circumferential direction of the suction tube, extending into the corresponding recessed cavity. Each adjustment rod has a wedge-shaped block adapted to the shape of the push block. The bottoms of adjacent grooves are connected.

2. The drainage device for cardiovascular surgery according to claim 1, characterized in that: The positioning ring has several through holes along its axial direction that communicate with the corresponding positioning holes. The limiting structure includes a slide rod that is slidably connected to the through holes on the same axis. An elastic reset member is provided between the slide rod and the through holes. The positioning ring has an annular block that is rotatably connected to the same axis on the same axis. Several receiving cavities for accommodating the slide rod are provided on the inner wall of the annular block. The longitudinal section of the receiving cavity is arc-shaped.

3. A drainage device for cardiovascular surgery according to claim 2, characterized in that: An elastic support is also provided between the adjusting plate and the adjusting groove.

4. A drainage device for cardiovascular surgery according to claim 3, characterized in that: Both ends of the support rod are provided with anti-detachment protrusions.

5. A drainage device for cardiovascular surgery according to claim 4, characterized in that: Both the adjusting plate and the inner wall of the connecting rod are provided with rubber pads.

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