Drainage device for cardiac vascular surgery

Abstract

The invention discloses a drainage device for cardiac vascular surgery, and belongs to the technical field of medical instruments, the drainage device 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 communicated with a suction tube, and the outer side of the drainage tube is sleeved with a supporting structure; the supporting structure comprises a plurality of supporting rings, and the supporting rings located at the two ends are detachably connected with the ends of the drainage tube. A plurality of connecting lines which sequentially penetrate through all the supporting rings are fixed on the supporting ring positioned at one end; the supporting ring at the other end is provided with a plurality of positioning holes for the corresponding connecting lines to penetrate through, the supporting ring is provided with a limiting structure for limiting sliding of the connecting lines, and elastic supporting pieces are arranged between the connecting lines and the supporting ring; the drainage device aims to solve the problem that normal use of the drainage device is affected due to the fact that a drainage tube made of flexible materials is prone to being flattened by internal and external pressure difference or mechanical collision.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a drainage device for cardiovascular surgery. Background Art

[0002] Cardiovascular surgery is a clinical department set up to diagnose and treat cardiovascular diseases. The diseases treated include angina pectoris, hypertension, sudden death, arrhythmia, heart failure, premature beats, irregular heartbeat, myocardial infarction, cardiomyopathy, myocarditis, acute myocardial infarction and other cardiovascular diseases.

[0003] After cardiovascular surgery, a drainage device is needed to guide the pus, blood, and fluid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infection and affect wound healing. Drainage devices are generally made of flexible materials, but drainage tubes made of flexible materials are easily flattened by internal and external pressure differences or mechanical collisions, which affects the normal use of the drainage device. Summary of the invention

[0004] In view of this, the present invention discloses a drainage device for cardiovascular surgery, which aims to solve the problem that the drainage tube made of flexible material is easily flattened by the internal and external pressure difference or mechanical collision, thereby affecting the normal use of the drainage device.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A drainage device for cardiovascular surgery comprises a drainage tube, one end of which is provided with a negative pressure generator, the other end of which is connected to a suction tube, and a support structure is sleeved on the outer side of the drainage tube; the support structure comprises a plurality of support rings, wherein the support rings at both ends are detachably connected to the ends of the drainage tube; a plurality of connecting wires are fixed on the support ring at one end and pass through all the support rings in sequence; a plurality of positioning holes for corresponding connecting wires to pass through are provided on the support ring at the other end, a limiting structure for limiting the sliding of the connecting wires is provided on the support ring, and elastic support members are provided between the connecting wires 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 wires, and support balls are slidably sleeved on both ends of the support rods; a plurality of spherical cavities for installing support balls are provided on both sides of the support ring, and cavities for accommodating the ends of the support rods are provided between the spherical cavities adjacent to each other along the axial direction of the support ring.

[0007] In this solution, the support structure is installed on the drainage tube, the restriction of the limiting structure on the connecting line is released, the support rings at both ends are stretched, the support rings at both ends are connected and fixed to the two ends of the drainage tube, and then the drainage tube is bent to place the suction tube in the effusion; in this process, the support ball and the spherical cavity are used to cooperate so that the support rod can deflect in any direction relative to the support ring, and the support rod can slide relative to the support ball, so that the support rings can move relative to each other, and then the support rings move synchronously with the bending of the drainage tube; after the drainage device is installed, the sliding of the connecting line relative to the end support ring is limited by the limiting structure, so that the connecting line remains taut, thereby limiting the movement between adjacent support rings, so that the drainage tube is supported and restricted by the support rod and the support ring to prevent the drainage tube from being flattened or moved; then a negative pressure generator is used to generate negative pressure inside the drainage tube for suction.

[0008] The support structure in this solution is suitable for drainage tubes of various lengths, and can also support and restrict curved drainage tubes to prevent the drainage tubes from being flattened due to internal and external pressure differences or mechanical collisions, thereby ensuring the normal use of the drainage device.

[0009] Furthermore, a closing block is threadedly connected to the end of the suction pipe, and a plurality of concave cavities are opened inside the circumference of the suction pipe along its axial direction, baffles are slidably arranged in the concave cavities, a suction hole is arranged in the middle of the baffle, a through groove for connecting the suction pipe with the outside world is opened in the middle of the concave cavity, and the length of the through groove is less than the length of the baffle; a hollow suspension block is arranged at the end of the baffle facing the drainage pipe.

[0010] In this solution, suction holes are set on the baffle plate, so that the suction pipe can suck the effluent through multiple suction holes, which can suck over a wider range and improve suction efficiency. At the same time, the baffle plate closes the through slot, and the suspension block always floats on the surface of the effluent in the effluent. The buoyancy of the suspension block drives the baffle plate to slide, so that the suction holes on the baffle plate always remain below the surface of the effluent, to avoid that after the effluent surface drops to a certain level, some of the suction holes are exposed to the effluent, resulting in a decrease in the pressure inside and outside the drainage tube, and the effluent cannot be sucked effectively.

[0011] Furthermore, two grooves symmetrically arranged about the suction hole are opened in the baffle along the axial direction of the suction pipe, and an adjusting groove connected to the suction hole is opened in the middle of the groove. An adjusting plate for shielding the suction hole is slidably connected in the adjusting groove, and an elastic support member is also provided between the adjusting plate and the adjusting groove; an adjusting rod is slidably connected to the adjusting plate along the axial direction of the suction pipe, both ends of the adjusting rod pass through the groove and extend into the concave cavity, and the end of the adjusting rod close to the drainage rod is slidably connected to the end of the concave cavity along the circumferential direction of the suction pipe; the end of the closing block is slidably connected to a pushing block extending into the corresponding concave cavity along the circumferential direction of the suction pipe, and the pushing block is wedge-shaped, and the adjusting rod is provided with a wedge-shaped block adapted to the shape of the pushing block, and the bottoms of adjacent grooves are connected.

[0012] In the present scheme, when it is necessary to quickly aspirate the accumulated fluid, the closing block is rotated forward, so that the closing block drives the pushing block at the end to move toward the drainage tube, and the pushing block is used to squeeze and push the wedge block, so that the wedge block drives the adjusting rod to move away from the suction hole, and the adjusting plate moves synchronously with the adjusting rod, thereby exposing more of the suction hole, increasing the effective suction area of ​​the suction hole, and accelerating the suction speed of the accumulated fluid; when it is necessary to slowly aspirate the accumulated fluid, the closing block is rotated reversely, and the closing block is separated from the wedge block along with the closing block, and the wedge block drives the adjusting rod and the adjusting plate to move in the reverse direction under the action of the elastic reset member, partially closing the suction hole, reducing the effective suction area of ​​the suction hole, and thereby slowing down the abstraction speed of the accumulated fluid.

[0013] Furthermore, a plurality of through holes connected to the corresponding positioning holes are provided along the axial direction of the circumferential side of the positioning ring, and the limiting structure includes a sliding rod coaxially slidably connected to the through hole, and an elastic reset member is provided between the sliding rod and the through hole; an annular block is coaxially rotatably connected to the circumferential side of the positioning ring, and a plurality of accommodating cavities for accommodating the sliding rod are provided on the inner wall of the annular block, and the longitudinal cross-section of the accommodating cavity is arc-shaped.

[0014] Furthermore, the end of the closing block is arc-shaped.

[0015] Furthermore, anti-drop protrusions are provided at both ends of the support rod.

[0016] Furthermore, the adjusting plate and the inner wall of the connecting rod are both provided with a rubber cushion layer.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0021] Figure 3 A longitudinal cross-sectional view of an embodiment of the present invention;

[0022] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the suction pipe in an embodiment of the present invention;

[0024] Figure 6 It is a longitudinal cross-sectional view of the annular block in an embodiment of the present invention.

[0025] The markings in the accompanying drawings are as follows: drainage tube 1, negative pressure generator 2, suction tube 3, support ring 4, connecting line 5, elastic support member 6, support rod 7, support ball 8, closing block 9, baffle 10, suction hole 11, suspension block 12, adjustment plate 13, adjustment rod 14, push block 15, wedge block 16, slide rod 17, elastic reset member 18, anti-slip protrusion 19, groove 20, annular block 21, and accommodating chamber 22. DETAILED DESCRIPTION

[0026] like Figures 1 to 6 As shown:

[0027] A drainage device for cardiovascular surgery comprises a drainage tube 1, one end of which is provided with a negative pressure generator 2, the other end of which is connected with a suction tube 3, and a support structure is sleeved on the outside of the drainage tube 1; the support structure comprises a plurality of support rings 4, wherein the support rings 4 at both ends are detachably connected to the ends of the drainage tube 1; a plurality of connecting wires 5 which sequentially penetrate all the support rings 4 are fixed on the support ring 4 at one end; a plurality of positioning holes for corresponding connecting wires 5 to pass through are provided on the support ring 4 at the other end, a limiting structure for limiting the sliding of the connecting wires 5 is provided on the support ring 4, and an elastic support member 6 is provided between the connecting wires 5 and the support ring 4; a plurality of hollow support rods 7 are provided between adjacent support rings 4, the support rods 7 are slidably sleeved on the corresponding connecting wires 5, and support balls 8 are slidably sleeved on both ends of the support rods 7; a plurality of spherical cavities for installing the support balls 8 are provided on both sides of the support ring 4, and cavities for accommodating the ends of the support rods 7 are provided between the spherical cavities adjacent to each other along the axial direction of the support ring 4.

[0028] In this solution, the support structure is installed on the drainage tube 1, the restriction of the limiting structure on the connecting line 5 is released, the support rings 4 at both ends are stretched, the support rings 4 at both ends are connected and fixed to the two ends of the drainage tube 1, and then the drainage tube 1 is bent, and the suction tube 3 is placed in the effusion; in this process, the support ball 8 and the spherical cavity are used to cooperate so that 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 support rings 4 can move relative to each other, and then the support rings 4 can move synchronously with the bending of the drainage tube 1; after the drainage device is installed, the sliding of the connecting line 5 relative to the end support ring 4 is limited by the limiting structure, so that the connecting line 5 remains taut, thereby limiting the movement between adjacent support rings 4, so that the drainage tube 1 is supported and restricted by the support rod 7 and the support ring 4 to prevent the drainage tube 1 from being flattened or moved; then the negative pressure generator 2 is used to generate negative pressure inside the drainage tube 1 for suction.

[0029] The support structure in this solution is suitable for drainage tubes 1 of various lengths, and can also support and restrict curved drainage tubes 1 to prevent the drainage tubes 1 from being flattened due to internal and external pressure differences or mechanical collisions, thereby ensuring the normal use of the drainage device.

[0030] In the present embodiment, a closing block 9 is threadedly connected to the end of the suction pipe 3, and a plurality of concave cavities are opened inside the circumference of the suction pipe 3 along its axial direction, and baffles 10 are slidably arranged in the concave cavities, a suction hole 11 is arranged in the middle of the baffle 10, and a through groove for connecting the suction pipe 3 with the outside is opened in the middle of the concave cavity, and the length of the through groove is less than the length of the baffle 10; a hollow suspended block 12 is arranged at the end of the baffle 10 facing the drainage pipe 1.

[0031] In this solution, by setting the suction holes 11 on the baffle 10, the suction pipe 3 can suck the effluent through multiple suction holes 11, and can suck over a wider range, which can improve suction efficiency. At the same time, the baffle 10 closes the through groove, and the suspension block 12 always floats on the surface of the effluent in the effluent. The buoyancy of the suspension block 12 drives the baffle 10 to slide, so that the suction holes 11 on the baffle 10 always remain below the surface of the effluent, to avoid that after the effluent surface drops to a certain level, part of the suction holes 11 are exposed to the effluent, resulting in a decrease in the internal and external compression of the drainage tube 1, and the effluent cannot be effectively sucked.

[0032] In this embodiment, two grooves 20 symmetrically arranged about the suction hole 11 are opened in the baffle 10 along the axial direction of the suction pipe 3, and an adjustment groove connected to the suction hole 11 is opened in the middle of the groove 20. An adjustment plate 13 for shielding the suction hole 11 is slidably connected in the adjustment groove, and an elastic support member 6 (conventional technical means, not shown in the figure) is also arranged between the adjustment plate 13 and the adjustment groove; an adjustment rod 14 is slidably connected along the axial direction of the suction pipe 3 on the adjustment plate 13, and both ends of the adjustment rod 14 pass through the groove 20 and extend into the concave cavity, and the end of the adjustment rod 14 close to the drainage rod is slidably connected to the end of the concave cavity along the circumferential direction of the suction pipe 3; the end of the closing block 9 is slidably connected with a push block 15 extending into the corresponding concave cavity along the circumferential direction of the suction pipe 3, and the push block 15 is wedge-shaped, and a wedge-shaped block 16 adapted to the shape of the push block 15 is arranged on the adjustment rod 14, and the bottoms of adjacent grooves 20 are connected.

[0033] In the present solution, when it is necessary to quickly aspirate the accumulated fluid, the closing block 9 is rotated forward, so that the closing block 9 drives the pushing block 15 at the end to move toward the drainage tube 1, and the pushing block 15 is used to squeeze and push the wedge block 16, so that the wedge block 16 drives the adjusting rod 14 to move away from the suction hole 11, and the adjusting plate 13 moves synchronously with the adjusting rod 14, thereby exposing more of the suction hole 11, increasing the effective suction area of ​​the suction hole 11, and accelerating the suction speed of the accumulated fluid; when it is necessary to slowly aspirate the accumulated fluid, the closing block 9 is rotated in the opposite direction, and the closing block 9 is separated from the wedge block 16 with the closing block 9, and the wedge block 16 drives the adjusting rod 14 and the adjusting plate 13 to move in the opposite direction under the action of the elastic support member 6, partially closing the suction hole 11, reducing the effective suction area of ​​the suction hole 11, and thereby slowing down the abstraction speed of the accumulated fluid. For the convenience of operation, a gear can be provided on the outer wall of the suction pipe 3 to mesh with the outer wall of the closing block 9, and a motor can be used to drive the gear to rotate the closing block 9. This is a conventional technical means, so it is not elaborated in detail and is not drawn in the figure.

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

[0035] In this solution, when it is necessary to move the connecting line 5, it is only necessary to rotate the annular block 21 in the forward direction so that the accommodating cavity 22 on the annular block 21 faces 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 no longer presses the connecting line 5; when it is necessary to limit the connecting line 5, it is only necessary to rotate the annular block 21 in the reverse direction so that the inner wall of the annular block 21 pushes the slide rod 17 to press the connecting line 5.

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

[0037] Arranging the end of the sealing block 9 into an arc shape can reduce scratches on the patient's body.

[0038] In this embodiment, anti-drop protrusions 19 are provided at both ends of the support rod 7 .

[0039] The anti-slip protrusion 19 is provided to prevent the support rod 7 from being detached from the support ball 8 .

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

[0041] The rubber cushion layer is provided to reduce the wear on the connecting line 5 .

[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail 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 invention.

Claims

1. A drainage device for cardiovascular surgery, characterized in that: It includes a drainage tube, one end of which is provided with a negative pressure generator, the other end of which is connected to a suction tube, and a support structure is sleeved on the outer side of the drainage tube; the support structure includes a plurality of support rings, wherein the support rings at both ends are detachably connected to the ends of the drainage tube; a plurality of connecting wires are fixed on the support ring at one end and pass through all the support rings in sequence; a plurality of positioning holes for the corresponding connecting wires to pass through are provided on the support ring at the other end, a limiting structure for limiting the sliding of the connecting wires is provided on the support ring, and elastic support members are provided between the connecting wires 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 wires, and support balls are slidably sleeved on both ends of the support rods; a plurality of spherical cavities for installing support balls are provided on both sides of the support ring, and cavities for accommodating the ends of the support rods are provided between the spherical cavities adjacent to each other along the axial direction of the support ring.

2. A drainage device for cardiovascular surgery according to claim 1, characterized in that: The end of the suction pipe is threadedly connected with a closing block, and a plurality of concave cavities are opened inside the circumference of the suction pipe along its axial direction, baffles are slidably arranged in the concave cavities, a suction hole is arranged in the middle of the baffle, a through groove for connecting the suction pipe with the outside is opened in the middle of the concave cavity, and the length of the through groove is less than the length of the baffle; a hollow suspension block is arranged at the end of the baffle facing the drainage pipe.

3. A drainage device for cardiovascular surgery according to claim 2, characterized in that: Two grooves symmetrically arranged about the suction hole are opened in the baffle along the axial direction of the suction pipe, and an adjustment groove connected to the suction hole is opened in the middle of the groove. An adjustment plate for shielding the suction hole is slidably connected in the adjustment groove, and an elastic support member is also provided between the adjustment plate and the adjustment groove; an adjustment rod is slidably connected on the adjustment plate along the axial direction of the suction pipe, both ends of the adjustment rod pass through the groove and extend into the concave cavity, and the end of the adjustment rod close to the drainage rod is slidably connected to the end of the concave cavity along the circumferential direction of the suction pipe; the end of the closing block is slidably connected with a pushing block extending into the corresponding concave cavity along the circumferential direction of the suction pipe, and the pushing block is wedge-shaped, and the adjusting rod is provided with a wedge-shaped block adapted to the shape of the pushing block, and the bottoms of adjacent grooves are connected.

4. A drainage device for cardiovascular surgery according to claim 3, characterized in that: The circumferential side of the positioning ring is provided with a plurality of through holes connected with the corresponding positioning holes along its axial direction, and the limiting structure includes a sliding rod coaxially slidably connected to the through hole, and an elastic reset member is provided between the sliding rod and the through hole; the circumferential side of the positioning ring is coaxially rotatably connected with an annular block, and the inner wall of the annular block is provided with a plurality of accommodating cavities for accommodating the sliding rod, and the longitudinal section of the accommodating cavity is arc-shaped.

5. A drainage device for cardiovascular surgery according to claim 4, characterized in that: An elastic support member is also arranged between the adjustment plate and the adjustment slot.

6. A drainage device for cardiovascular surgery according to claim 5, characterized in that: Anti-drop protrusions are provided at both ends of the support rod.

7. A drainage device for cardiovascular surgery according to claim 6, characterized in that: The adjusting plate and the inner wall of the connecting rod are both provided with rubber cushion layers.

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