Abdominal drainage fixing device for medical oncology

Abstract

The invention discloses an abdominal drainage fixing device for medical oncology, and relates to the technical field of medical instruments. Comprising a device shell, a drainage guide pipe is arranged in a clamping channel, a clamping mechanism is installed in the device shell, the clamping mechanism comprises a rotating ring rotationally connected to the inner wall of the device shell, an abutting block is fixedly connected to the inner wall of the rotating ring, and a containing block is fixedly connected to the bottom of a moving rod. The other end of the connecting rod is rotationally connected with the two sides of the clamping block, an adjusting assembly is installed in the clamping block, it is ensured that abutting balls at the bottom end of the clamping block are evenly attached to the surface of the outer wall of the catheter, full-circumference wrapping type clamping of the drainage catheter is formed, and the situation that the catheter wall is sunken due to local stress concentration is avoided; the clamping force on the surfaces of the guide tubes can be finely adjusted according to different clamping tube diameters, and the problems that the tube walls collapse due to the fact that the clamping force is too large, and clamping is loosened due to the fact that the clamping force is too small are solved.

Description

[0001] This invention relates to the field of medical device technology, specifically to an abdominal drainage and fixation device for oncology. Background Technology

[0002] An abdominal drainage tube is a medical drainage device specifically designed for postoperative abdominal surgery. It is inserted into the abdominal cavity through abdominal wall puncture or incision. Its core function is to drain pathological fluids such as effusion, hemoptysis, pus, bile, and pancreatic juice from the abdominal cavity. The indwelling abdominal drainage tube may shift due to patient movement, so a drainage tube fixation device is needed to secure the drainage tube.

[0003] The existing abdominal drainage fixation device has a relatively simple connection structure, while the diameter of the abdominal drainage tube varies significantly. This makes it difficult to achieve precise adaptation to different tube diameters and fixation requirements, which can easily lead to problems such as unstable fixation and drainage failure. At the same time, the existing device has a fixed clamping force, which is not easy to adapt to the deformation resistance requirements of different tube diameters. This can easily lead to problems such as excessive clamping force causing tube wall collapse, or insufficient clamping force causing loosening.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing abdominal drainage and fixation devices used in oncology departments. Summary of the Invention

[0005] The purpose of this invention is to provide an abdominal drainage fixation device for medical oncology, in order to solve the problems mentioned in the background art, such as the inconvenience of achieving precise adaptation to different tube diameters and fixation requirements, and the inconvenience of adapting to the deformation resistance requirements of different tube diameters. The technical solution of this invention provides a solution that is significantly different from the existing technology, addressing the problem that the existing technical solutions are too simplistic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an abdominal drainage and fixation device for oncology, comprising a device housing, wherein a transparent dressing is fixedly connected to the four sides of the device housing, a clamping channel is provided in the middle of the device housing, a drainage tube is provided inside the clamping channel, and a clamping mechanism is installed inside the device housing;

[0007] The clamping mechanism includes a rotating ring rotatably connected to the inner wall of the device housing, an abutment block fixedly connected to the inner wall of the rotating ring, a movable rod slidingly limited within a through groove on the surface of the clamping channel, a limiting plate provided within the through groove on the surface of the clamping channel, a receiving block fixedly connected to the bottom of the movable rod, clamping blocks provided at both ends inside the receiving block, a traction rod fixedly connected to the bottom of the limiting plate, connecting rods rotatably connected to both sides of the traction rod, the other end of the connecting rod rotatably connected to both sides of the clamping block, and an adjustment component installed inside the clamping block.

[0008] Preferably, the adjusting assembly includes an abutting ball that is fitted and limited to the inner wall of the bottom end of the clamping block. A first pressure plate is slidably positioned inside the clamping block at the top of the abutting ball. A second pressure plate is slidably positioned above the first pressure plate. A second spring is provided between the first and second pressure plates. A first oil tank is fixedly connected to the top of the clamping block. A first piston rod is slidably positioned inside the first oil tank. The output end of the first piston rod extends into the clamping block and is fixedly connected to the top of the second pressure plate. A second oil tank is fixedly connected to the middle area inside the accommodating block. A second piston rod is slidably positioned inside the second oil tank. The output end of the second piston rod extends into the moving rod and is fixedly connected to the bottom of the traction rod.

[0009] Preferably, the limiting plate passes through the moving rod and is fixedly connected to the inner wall of the through groove, and is limited to slide within the moving rod. A first spring is fixedly connected to the top of the limiting plate, and the other end of the first spring is fixedly connected to the top end of the moving rod.

[0010] Preferably, the inner walls on both sides of the accommodating block are provided with arc-shaped sliding grooves, and the clamping block is limited to sliding within the arc-shaped sliding grooves by limiting blocks on both sides.

[0011] Preferably, a worm gear is rotatably connected to the outer side of the rotating ring on the inner wall of the device housing. The worm gear extends out of one side of the device housing and is fixedly connected to an adjustment knob. Several sets of teeth are evenly arranged circumferentially on the outer surface of the rotating ring, and the teeth mesh with the worm gear.

[0012] Preferably, the upper oil chamber inside the first oil tank is connected to the lower oil chamber inside the second oil tank via an oil delivery hose, and a third spring is sleeved on the surface of the first piston rod.

[0013] Preferably, six sets of abutment blocks are evenly arranged circumferentially along the inner wall of the rotating ring, and the abutment surfaces of the six sets of abutment blocks are set with an inclined structure. Six sets of moving rods are evenly arranged circumferentially on the surface of the clamping channel, and the abutment surfaces of the six sets of abutment blocks abut against the tops of the six sets of moving rods.

[0014] Preferably, the bottom of the contact ball is provided with an arc-shaped groove, and an anti-slip rubber pad is fixedly connected in the arc-shaped groove. The top of the contact ball is provided with an arc-shaped limiting groove. Limiting rods are fixedly connected to both sides of the bottom of the first pressure plate and extend into the arc-shaped limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention comprises a rotating ring, abutting blocks, moving rods, a limiting plate, a accommodating block, a clamping block, a traction rod, a connecting rod, and a worm gear. The rotation of the worm gear drives the rotating ring to rotate, which in turn drives six sets of inclined abutting blocks to rotate. The inclined abutting surfaces of the abutting blocks abut against the tops of the six sets of moving rods. Through the guiding effect of the inclined surfaces, a radially inward thrust is applied to the moving rods, thereby pushing the six sets of moving rods to move synchronously towards the center of the clamping channel along the through groove. The traction rod slides relative to the moving rods inside, and the connecting rods on both sides are rotatably connected to the clamping blocks. During the movement of the accommodating block, the angle of the connecting rod changes, causing the clamping blocks on both sides to finely adjust their angles along the arc-shaped sliding groove as a trajectory. This ensures that the abutting spheres at the bottom of the clamping blocks are evenly attached to the outer wall surface of the catheter, forming a full-circumferential wrapping clamping of the drainage catheter. This avoids the tube wall indentation caused by localized force concentration, thereby achieving precise fitting and fixing of drainage catheters of different diameters.

[0017] 2. This invention comprises a contact ball, a first pressure plate, a second pressure plate, a first oil tank, a first piston rod, a second oil tank, and a second piston rod. When clamping a small-diameter conduit, the moving rod converges, causing the receiving block to move downwards, which in turn causes the second oil tank to descend, resulting in the second piston rod moving upwards relatively. At this time, the first piston rod moves upwards under the action of a third spring, returning the oil in the first oil tank to the second oil tank. The upward movement of the first piston rod reduces the compression of the second spring, decreases the pressure exerted by the first pressure plate on the contact ball, and automatically reduces the clamping force, thereby preventing the tube cavity from collapsing. Conversely, when clamping a large-diameter conduit, the moving rod converges, causing the receiving block to move downwards by a smaller distance, which increases the compression of the second spring, increases the pressure exerted by the first pressure plate on the contact ball, and relatively increases the clamping force. This allows for fine-tuning of the clamping force on the conduit surface according to different conduit diameters, avoiding the problem of excessive clamping force causing tube wall collapse or insufficient clamping force causing loosening.

[0018] 3. This invention is equipped with a limiting rod and an anti-slip rubber pad. By using the anti-slip rubber pad at the bottom of the contact ball, the friction between the contact ball and the surface of the conduit is effectively increased. At the same time, the limiting rod, in conjunction with the arc-shaped limiting groove at the top of the contact ball, limits the offset angle of the contact ball, preventing excessive offset that would cause the anti-slip rubber pad to fail to adhere to the surface of the conduit. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the overall internal structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4This is a schematic diagram of the rotating ring structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the movable rod of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B;

[0025] Figure 7 This is a schematic diagram of the internal structure of the clamping block of the present invention.

[0026] In the diagram: 1. Housing; 2. Transparent dressing; 3. Clamping channel; 4. Drainage tube; 51. Rotating ring; 52. Contact block; 53. Moving rod; 54. Limiting plate; 55. Receiving block; 56. Clamping block; 57. Traction rod; 58. Connecting rod; 591. Contact ball; 592. First pressure plate; 593. Second pressure plate; 594. First oil tank; 595. First piston rod; 596. Second oil tank; 597. Second piston rod; 6. Worm gear; 7. Adjusting knob; 8. Gear; 9. Anti-slip rubber pad; 10. Limiting rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-7 The present invention provides a technical solution: an abdominal drainage and fixation device for oncology, comprising a device housing 1, a transparent dressing 2 fixedly connected to the four sides of the device housing 1, a clamping channel 3 opened in the middle of the device housing 1, a drainage tube 4 disposed inside the clamping channel 3, a worm gear 6 rotatably connected to the outer side of the rotating ring 51 located on the inner wall of the device housing 1, the worm gear 6 extending out of one side of the device housing 1 and fixedly connected to an adjustment knob 7, and a clamping mechanism installed inside the housing 1;

[0029] Tear off the release paper from the bottom of the transparent dressing 2. With the patient's wound as the center, attach the device housing 1 to the skin. Then, according to the diameter of the drainage catheter 4 for oncology patients, rotate the adjustment knob 7 on the outside of the device housing 1 to drive the worm gear 6 to rotate.

[0030] The clamping mechanism includes a rotating ring 51 rotatably connected to the inner wall of the device housing 1. An abutment block 52 is fixedly connected to the inner wall of the rotating ring 51. Several sets of teeth 8 are evenly arranged circumferentially on the outer surface of the rotating ring 51, meshing with a worm gear 6. A moving rod 53 is slidably limited within a through groove on the surface of the clamping channel 3. A limiting plate 54 is provided within the through groove on the surface of the clamping channel 3, passing through the moving rod 53 and fixedly connected to the inner wall of the through groove, and sliding within the moving rod 53. A first spring is fixedly connected to the top of the limiting plate 54, and the other end of the first spring is fixedly connected to the top end of the moving rod 53. A receiving block 55 is fixedly connected to the bottom of the moving rod 53. Arc-shaped grooves are provided on the inner walls of both sides of the block 55. The clamping block 56 is limited and slidable on both sides by limiting blocks in the arc-shaped grooves. The accommodating block 55 has clamping blocks 56 at both ends. The bottom of the limiting plate 54 is fixedly connected to the traction rod 57. The traction rod 57 is rotatably connected to the two sides of the traction rod 57. The other end of the connecting rod 58 is rotatably connected to the two sides of the clamping block 56. Six sets of abutting blocks 52 are evenly arranged circumferentially along the inner wall of the rotating ring 51. The abutting surfaces of the six sets of abutting blocks 52 are set with an inclined structure. Six sets of moving rods 53 are evenly arranged circumferentially on the surface of the clamping channel 3. The abutting surfaces of the six sets of abutting blocks 52 abut against the tops of the six sets of moving rods 53. An adjustment component is installed inside the clamping block 56.

[0031] When the six sets of inclined abutment blocks 52, which are evenly distributed circumferentially on the inner wall of the rotating ring 51, rotate synchronously with the rotating ring 51, their inclined abutment surfaces abut against the tops of the six sets of moving rods 53 arranged circumferentially on the inner wall of the clamping channel 3. Through the guiding effect of the inclined surfaces, a radially inward thrust is applied to the tops of the moving rods 53, pushing the six sets of moving rods 53 synchronously toward the center of the clamping channel 3 along the through groove on the surface of the clamping channel 3 to match the diameter of the drainage conduit 4. At the same time, since the limiting plate 54 is fixed to the inner wall of the through groove on the surface of the clamping channel 3, and the traction rod 57 is fixed to the bottom of the limiting plate 54, when the moving rod 53 moves downward, the traction rod 57 does not move, so that the connecting rods 58 on both sides of the traction rod 57 pull the clamping blocks 56 closer to each other along the arc-shaped slide groove.

[0032] In one embodiment of the present invention, the adjusting assembly includes an abutment ball 591 fitted and limited to the inner wall of the bottom end of the clamping block 56. A first pressure plate 592 is slidably limited within the clamping block 56 at the top of the abutment ball 591. A second pressure plate 593 is slidably limited above the first pressure plate 592. A second spring is disposed between the first pressure plate 592 and the second pressure plate 593. A first oil tank 594 is fixedly connected to the top of the clamping block 56. A first piston rod 595 is slidably limited inside the first oil tank 594. The output end of 5 extends into the interior of the clamping block 56 and is fixedly connected to the top of the second pressure plate 593. The middle area inside the accommodating block 55 is fixedly connected to the second oil tank 596. The second oil tank 596 is limited and slidably connected to the second piston rod 597. The output end of the second piston rod 597 extends into the interior of the moving rod 53 and is fixedly connected to the bottom of the traction rod 57. The upper oil chamber inside the first oil tank 594 is connected to the lower oil chamber inside the second oil tank 596 through an oil delivery hose. A third spring is sleeved on the surface of the first piston rod 595.

[0033] The downward movement of the receiving block 55 causes the second oil tank 596 to descend. Since the output end of the second piston rod 597 is fixedly connected to the bottom of the traction rod 57, the second piston rod 597 moves upward relative to the first piston rod 597, increasing the internal space of the second oil tank 596. At this time, the first piston rod 595 moves upward under the action of the third spring, pushing the oil in the first oil tank 594 back into the second oil tank 596. The upward movement of the first piston rod 595 causes the second pressure plate 593 to move upward. The compression of the second spring at the bottom of the second pressure plate 593 decreases, and the pressure exerted by the second spring on the first pressure plate 592 decreases, which reduces the pressure exerted by the first pressure plate 592 on the contact ball 591. The clamping force automatically decreases, and conversely, it adaptively increases.

[0034] As one embodiment of the present invention, an arc-shaped groove is provided at the bottom of the contact ball 591, and an anti-slip rubber pad 9 is fixedly connected in the arc-shaped groove. An arc-shaped limiting groove is provided at the top of the contact ball 591. Limiting rods 10 are fixedly connected to both sides of the bottom of the first pressure plate 592 and extend into the arc-shaped limiting groove.

[0035] The anti-slip rubber pad 9 at the bottom of the contact ball 591 effectively increases the friction with the surface of the guide tube. At the same time, the limiting rod 10, in conjunction with the arc-shaped limiting groove at the top of the contact ball 591, limits the offset angle of the contact ball 591 to prevent excessive offset.

[0036] Working principle: When using this device, first peel off the release paper from the bottom of the transparent dressing 2. Centered on the patient's wound, attach the device housing 1 to the skin. Then, according to the diameter of the drainage catheter 4 for oncology patients, rotate the adjustment knob 7 on the outside of the device housing 1 to drive the worm gear 6 to rotate. Since the worm gear 6 meshes with the teeth 8 on the periphery of the rotating ring 51, the rotational motion of the worm gear 6 is converted into the circumferential rotation of the rotating ring 51 on the inner wall of the device housing 1. When the six sets of inclined abutment blocks 52, which are evenly distributed on the circumferential side of the inner wall of the rotating ring 51, rotate synchronously with the rotating ring 51, their inclined abutment surfaces abut against the tops of the six sets of moving rods 53 arranged circumferentially on the inner wall of the clamping channel 3. Through the guide of the inclined surfaces... The moving rod 53 is pushed radially inward at the top, causing the six moving rods 53 to move synchronously toward the center of the clamping channel 3 along the through groove on the surface of the clamping channel 3 to match the diameter of the drainage tube 4. At the same time, since the limiting plate 54 is fixed to the inner wall of the through groove on the surface of the clamping channel 3, and the traction rod 57 is fixed to the bottom of the limiting plate 54, the traction rod 57 does not move when the moving rod 53 moves downward. This causes the connecting rods 58 on both sides of the traction rod 57 to pull the clamping blocks 56 to move slightly closer to each other along the arc-shaped slide groove. This ensures that the contact ball 591 at the bottom of the clamping block 56 is evenly attached to the outer wall surface of the tube, forming a full-circumferential wrapping clamping of the drainage tube 4 and improving the stability of the clamping.

[0037] As the moving rod 53 converges, it causes the receiving block 55 to move downwards. The downward movement of the receiving block 55 causes the second oil tank 596 to descend. Since the output end of the second piston rod 597 is fixedly connected to the bottom of the traction rod 57, the second piston rod 597 moves upwards relative to the traction rod 57, increasing the internal space of the second oil tank 596. At this time, the first piston rod 595 moves upwards under the action of the third spring, pushing the oil in the first oil tank 594 back into the second oil tank 596. The upward movement of the first piston rod 595 causes the second pressure plate 593 to move upwards, and the bottom of the second pressure plate 593... The compression of the second spring decreases, and the pressure exerted by the second spring on the first pressure plate 592 decreases, which in turn reduces the pressure exerted by the first pressure plate 592 on the contact ball 591. The clamping force automatically decreases, thereby preventing the tube from collapsing. Conversely, for larger diameter tubes, the moving rod 53 converges and causes the receiving block 55 to move down a shorter distance, which increases the compression of the second spring by the second pressure plate 593. This increases the pressure exerted by the first pressure plate 592 on the contact ball 591, and the clamping force increases accordingly. This allows for fine-tuning of the clamping force on the tube surface according to different tube diameters.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An abdominal drainage and fixation device for medical oncology, comprising a device housing (1), characterized in that: A transparent dressing (2) is fixedly connected to the four sides of the device housing (1). A clamping channel (3) is opened in the middle of the device housing (1). A drainage tube (4) is provided inside the clamping channel (3). A clamping mechanism is installed inside the device housing (1). The clamping mechanism includes a rotating ring (51) rotatably connected to the inner wall of the device housing (1), an abutment block (52) fixedly connected to the inner wall of the rotating ring (51), a moving rod (53) slidingly limited in the through groove opened on the surface of the clamping channel (3), a limiting plate (54) provided in the through groove opened on the surface of the clamping channel (3), a receiving block (55) fixedly connected to the bottom of the moving rod (53), clamping blocks (56) provided at both ends inside the receiving block (55), a traction rod (57) fixedly connected to the bottom of the limiting plate (54), a connecting rod (58) rotatably connected to both sides of the traction rod (57), the other end of the connecting rod (58) rotatably connected to both sides of the clamping block (56), and an adjustment component installed inside the clamping block (56).

2. The abdominal drainage and fixation device for medical oncology according to claim 1, characterized in that: The adjusting assembly includes an abutment ball (591) fitted and limited to the inner wall of the bottom end of the clamping block (56). A first pressure plate (592) is slidably positioned within the clamping block (56) at the top of the abutment ball (591). A second pressure plate (593) is slidably positioned above the first pressure plate (592). A second spring is provided between the first pressure plate (592) and the second pressure plate (593). A first oil tank (594) is fixedly connected to the top of the clamping block (56). 594) A first piston rod (595) is internally limited and slidable. The output end of the first piston rod (595) extends into the clamping block (56) and is fixedly connected to the top of the second pressure plate (593). A second oil tank (596) is fixedly connected to the middle area inside the accommodating block (55). A second piston rod (597) is internally limited and slidable inside the second oil tank (596). The output end of the second piston rod (597) extends into the moving rod (53) and is fixedly connected to the bottom of the traction rod (57).

3. The abdominal drainage and fixation device for medical oncology according to claim 1, characterized in that: The limiting plate (54) passes through the moving rod (53) and is fixedly connected to the inner wall of the through groove, and is limited to slide within the moving rod (53). A first spring is fixedly connected to the top of the limiting plate (54), and the other end of the first spring is fixedly connected to the top of the inside of the moving rod (53).

4. The abdominal drainage and fixation device for medical oncology according to claim 1, characterized in that: The inner walls of the two sides of the accommodating block (55) are provided with arc-shaped sliding grooves, and the two sides of the clamping block (56) are limited to sliding in the arc-shaped sliding grooves by limiting blocks.

5. The abdominal drainage and fixation device for medical oncology according to claim 1, characterized in that: The outer side of the rotating ring (51) is rotatably connected to the inner wall of the device housing (1). The worm (6) extends out of one side of the device housing (1) and is fixedly connected to an adjustment knob (7). Several sets of teeth (8) are evenly arranged on the outer surface of the rotating ring (51) in the circumferential direction. The teeth (8) mesh with the worm (6).

6. The abdominal drainage and fixation device for medical oncology according to claim 2, characterized in that: The upper oil chamber inside the first oil tank (594) is connected to the lower oil chamber inside the second oil tank (596) via an oil delivery hose, and a third spring is sleeved on the surface of the first piston rod (595).

7. The abdominal drainage and fixation device for medical oncology according to claim 1, characterized in that: The abutment blocks (52) are evenly arranged in six groups along the inner wall of the rotating ring (51). The abutment surfaces of the six groups of abutment blocks (52) are set in an inclined structure. The moving rods (53) are evenly arranged in six groups along the surface of the clamping channel (3). The abutment surfaces of the six groups of abutment blocks (52) abut against the tops of the six groups of moving rods (53).

8. The abdominal drainage and fixation device for medical oncology according to claim 2, characterized in that: The bottom of the contact ball (591) is provided with an arc-shaped groove, and an anti-slip rubber pad (9) is fixedly connected in the arc-shaped groove. The top of the contact ball (591) is provided with an arc-shaped limiting groove. The bottom sides of the first pressure plate (592) are fixedly connected with limiting rods (10) and extend into the arc-shaped limiting groove.

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