Hemodialysis catheter assembling mechanism

Abstract

The utility model relates to the technical field of medical equipment, and discloses an assembling mechanism of a hemodialysis catheter, which comprises a first positioning seat, a second positioning seat, a third positioning seat and a fourth positioning seat, the second positioning seat is arranged on one side of the first positioning seat, and an extension tube groove corresponding to the Y-shaped groove is formed in the second positioning seat and used for fixing the extension tube; the inflating device is arranged on the side, back on to the second positioning seat, of the first positioning seat, and the inflating device is used for inflating one end of the catheter; and the clamping and moving devices are arranged on the two sides of the first positioning base, each clamping and moving device comprises a power piece and a clamping piece, the extension pipe is clamped by the clamping pieces, and the power pieces drive the clamping pieces to move. According to the assembling mechanism for the hemodialysis catheter, the extension tube is expanded and automatically assembled in place, the assembling efficiency of the hemodialysis catheter is improved, the assembling difficulty is reduced, and a large amount of labor cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an assembly mechanism for a hemodialysis catheter. Background Technology

[0002] In acute hemodialysis treatment, doctors typically use a hemodialysis catheter to guide blood into the dialyzer. After filtration, the blood is returned to the body through the tubing. A hemodialysis catheter usually includes a main tube, a connector, and at least two extension tubes. The main tube typically has at least two independent lumens: an arterial lumen for blood outflow and a venous lumen for blood inflow. Near the tip, each extension tube has a side opening on its wall: the arterial opening connects to the arterial lumen, and the venous opening connects to the venous lumen. The main tube connects to the two extension tubes via the connector, with each extension tube communicating with the arterial and venous lumens of the main tube, respectively. The connector is equipped with a catheter clamp, which can be opened or closed to connect or disconnect the main tube from the connector. The extension tubes have Luer connectors at their rear ends, allowing direct connection to the dialyzer during treatment.

[0003] The existing assembly process for the epitaxial tube and connector involves manually slipping the front end of the epitaxial tube onto the rear end of the connector, connecting the inflation device to the Luer connector at the rear end of the epitaxial tube, inflating the epitaxial tube, and then disconnecting the main tube from the connector. At this point, the section of the epitaxial tube that is fitted onto the connector expands. Finally, the epitaxial tube is manually pushed forward until the entire connector is fully engaged by the front end of the epitaxial tube. However, this assembly process is complex, requires manual labor, and is inefficient and costly. Utility Model Content

[0004] The purpose of this invention is to provide an assembly mechanism for hemodialysis catheters that automatically assembles the outer tube into place, thereby improving the assembly efficiency of hemodialysis catheters, reducing assembly difficulty, and saving labor costs.

[0005] To achieve the above objectives, this utility model provides an assembly mechanism for a hemodialysis catheter, comprising:

[0006] The first positioning seat has a Y-shaped groove for fixing the Y-shaped connector of the conduit;

[0007] The second positioning seat is disposed on one side of the first positioning seat. The second positioning seat has an extension tube groove corresponding to the Y-shaped groove, which is used to fix the extension tube.

[0008] An inflation device is provided on the side of the first positioning seat facing away from the second positioning seat, and the inflation device is used to inflate one end of the conduit.

[0009] A clamping and moving device is disposed on both sides of the first positioning seat. The clamping and moving device includes a power component and a clamping component. The clamping component clamps the extension tube, and the power component drives the clamping component to move.

[0010] Compared with the prior art, the assembly mechanism of this utility model for a hemodialysis catheter has the following advantages: A first positioning seat fixes the catheter via a Y-shaped groove and aligns the Y-shaped connector of the catheter with the outer tube. A second positioning seat with an outer tube groove fixes the connected outer tube. An inflation device inflates the catheter at the end facing away from the outer tube, causing high-pressure gas to be ejected from the catheter towards the silicone tube. This gas pressure inflates the outer tube to be assembled on the side facing the catheter, making its inner diameter larger than the outer diameter of the Y-shaped connector. Then, a clamping and moving device clamps and moves the outer tube and the Y-shaped connector for assembly. This hemodialysis catheter assembly mechanism expands the outer tube and automatically assembles it into place, improving the assembly efficiency of the hemodialysis catheter, reducing assembly difficulty, and saving significant labor costs.

[0011] The assembly mechanism for a hemodialysis catheter according to an embodiment of the present invention includes an inflation device comprising an outer mold, wherein a catheter cavity for accommodating the catheter is formed within the outer mold, and a sealing element is provided on the side of the catheter cavity facing the first positioning seat.

[0012] The assembly mechanism of the hemodialysis catheter according to this utility model includes a sealing member comprising a sealing ring and a sealing plate. The sealing ring extends into the catheter lumen and abuts against the outer peripheral surface of the catheter. The sealing plate is disposed on the side of the sealing ring facing the first positioning seat to press the sealing ring into the catheter lumen.

[0013] In the assembly mechanism of the hemodialysis catheter of this utility model embodiment, the outer end face of the sealing ring on the side opposite to the sealing plate is inclined towards the inflation direction.

[0014] The assembly mechanism of the hemodialysis catheter in this embodiment of the utility model has the sealing ring contacting the inner end face of the catheter and being inclined toward the inflation direction.

[0015] The assembly mechanism of the hemodialysis catheter in this embodiment of the utility model has screw holes provided on the sealing plate for fixing to the outer mold by bolts.

[0016] The assembly mechanism for a hemodialysis catheter according to this embodiment of the utility model includes a power component including a cylinder, the output shaft of which is connected to a push plate, and a clamping component fixed to the push plate.

[0017] The assembly mechanism for a hemodialysis catheter according to this utility model includes a clamping cylinder and two clamping claws arranged symmetrically above and below. The clamping cylinder is fixed to the push plate, and the clamping claws are rotatably connected to the clamping cylinder.

[0018] The assembly mechanism of the hemodialysis catheter of this utility model embodiment has a receiving groove at the end of the gripper that matches the outer diameter of the extension tube.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly mechanism of the hemodialysis catheter according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the sealing component of the assembly mechanism of the hemodialysis catheter according to an embodiment of the present invention;

[0022] In the figure, 1 is the first positioning seat; 11 is the Y-shaped groove; 2 is the second positioning seat; 21 is the extension tube groove; 3 is the guide tube; 4 is the extension tube; 5 is the clamping and moving device; 51 is the power component; 52 is the clamping component; 521 is the cylinder; 522 is the gripper; 523 is the receiving groove; 53 is the push plate; 6 is the inflation device; 61 is the outer mold; 62 is the guide tube cavity; 63 is the sealing component; 631 is the sealing ring; 632 is the sealing plate; and 634 is the screw hole. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] like Figure 1 As shown, a preferred embodiment of the present invention provides an assembly mechanism for a hemodialysis catheter, comprising a first positioning seat 1 and a second positioning seat 2 disposed opposite to each other. The first positioning seat 1 has a Y-shaped groove 11 for fixing the Y-shaped connector of the catheter 3. The second positioning seat 2 is disposed on one side of the first positioning seat 1 in the extension direction of the catheter 3, and the second positioning seat 2 has an extension tube groove 21 corresponding to the Y-shaped groove 11. The extension tube groove 21 has two slots for fixing two extension tubes 4 corresponding to the Y-shaped connector. Before assembly, the Y-shaped connector of the catheter 3 is placed in the Y-shaped groove 11, and the two silicone extension tubes 4 are respectively placed in the two slots of the extension tube groove 21, so that the Y-shaped connector of the catheter 3 is aligned with the extension tubes 4.

[0028] The assembly mechanism of a hemodialysis catheter according to a preferred embodiment of the present invention further includes an inflation device 6. The inflation device 6 is disposed on the side of the first positioning seat 1 facing away from the second positioning seat 2. The inflation device 6 is used to inflate one end of the catheter 3 with high-pressure gas. The high-pressure gas is ejected from the Y-type connector of the catheter 3. The air pressure blows the side of the outer tube 4 to be assembled toward the catheter 3, so that the silicone outer tube 4 toward the Y-type connector is enlarged and the inner diameter of the outer tube 4 is larger than the outer diameter of the Y-type connector of the catheter 3, which is more conducive to assembly onto the Y-type connector.

[0029] Clamping and moving devices 5 are also provided on both sides of the catheter 3. Specifically, the clamping and moving devices 5 are located on both sides of the first positioning seat 1. Each clamping and moving device 5 includes a power component 51 and a clamping component 52. The clamping component 52 clamps the extended tube 4. The power component 51 drives the clamping component 52 to move horizontally along the assembly direction of the catheter 3. The clamping component 52, holding the catheter 3, moves under the drive of the power component, thus assembling the extended tube with the Y-type connector. The assembly mechanism of the hemodialysis catheter 3 of this application allows the extended tube 4 to expand and automatically assembles the extended tube 4 into place, improving the assembly efficiency of the hemodialysis catheter 3, reducing assembly difficulty, and saving significant labor costs.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the inflation device 6 includes an outer mold 61, within which a conduit cavity 62 for accommodating the conduit 3 is formed. A sealing element 63 is provided at one end of the conduit cavity 62 facing the first positioning seat 1, and the other end of the conduit cavity 62 is used to introduce high-pressure gas. One end of the conduit 3 has an opening located within the conduit cavity 62. When high-pressure gas is introduced, the sealing element 63 seals one end of the conduit cavity 62, allowing all the high-pressure gas to enter the conduit 3 and spray out towards the extension tube 4, thus expanding the inner diameter of the extension tube 4. The conduit cavity 62 facilitates inflation of conduits 3 of different sizes. Compared to the size compatibility issue of directly connecting the inflation device 6 to the conduit 3, which requires replacing different outlet connectors to ensure sealing, this application allows inflation to be completed by inserting conduits 3 of different sizes into the conduit cavity 62. The sealing element 63 on the other side is made of a soft material, allowing for sealing of conduits 3 of different sizes inserted into the conduit cavity 62. This achieves high-pressure inflation with a sealed design without the need to replace numerous accessories, thus reducing costs.

[0031] In some embodiments of this utility model, the sealing element 63 includes a sealing ring 631 and a sealing plate 632. The sealing ring 631 extends into the conduit cavity 62 and abuts against the outer peripheral surface of the conduit 3. The sealing plate 632 is disposed on the side of the sealing ring 631 facing the first positioning seat 1 to press the sealing ring 631 into the conduit cavity 62. The outer peripheral surface of the sealing ring 631 also abuts against the inner wall of the conduit cavity 62, thus completing the sealing of the conduit cavity 62. This ensures that the high-pressure gas entering the conduit cavity 62 can only be transported to the outside through the conduit 3, thus ensuring the gas pressure strength inside the conduit 3 and also ensuring the stable expansion of the silicone-made extension tube 4.

[0032] In some embodiments of this utility model, the outer end face of the sealing ring 631 facing away from the sealing plate 632 is inclined towards the inflation direction. When the outer side of the inclined sealing ring 631 is subjected to the pressure of compressed air, it can press the inner wall surface of the sealing ring 631 against the outer peripheral surface of the conduit 3, so that the inner wall surface of the conduit 3 and the inner wall surface of the sealing ring 631 fit more tightly, further improving the sealing effect of the conduit cavity 62.

[0033] In some embodiments of this utility model, the sealing ring 631 is inclined towards the inner end face of the contact catheter 3, which has a guiding function, making it convenient for the catheter 3 to extend into the catheter cavity 62 from the inside of the sealing ring 631. This optimizes the installation process of the catheter 3, helps to improve assembly efficiency, and further improves the production efficiency of the hemodialysis catheter 3.

[0034] In some embodiments of this utility model, the sealing plate 632 is provided with screw holes 634, and the outer mold 61 is also provided with corresponding screw holes 634, so that the sealing plate 632 can be stably fixed to the outer mold 61 by bolts. The sealing plate 632 provides support for the sealing ring 631 on the outside, so that it will not be pushed out of the guide cavity 62 when subjected to the pressure of high-pressure air, thereby improving the stability of the sealing element 63.

[0035] In some embodiments of this utility model, the power component 51 includes a cylinder, the output shaft of the cylinder is connected to a push plate 53, the push plate 53 includes a vertically arranged plate body connected to the cylinder output shaft and another horizontally arranged plate body, and the clamping component 52 is fixed on the horizontally arranged plate body of the push plate 53.

[0036] In some embodiments of this utility model, the clamping member 52 includes a clamping cylinder 521 and two clamping jaws 522 arranged symmetrically in the upper and lower directions. The two clamping jaws 522 clamp an extension tube 4 in both the upper and lower directions. The clamping cylinder 521 provides power for the clamping jaws 522 to clamp the extension tube 4. The clamping cylinder 521 is fixed on the horizontal plate of the push plate 53, and the clamping jaws 522 are rotatably connected to the clamping cylinder. Further, a clamping member 52 is provided on both sides of the first fixing seat, and each extension tube 4 corresponds to one clamping member 52.

[0037] In some embodiments of this utility model, the end of the gripper 522 is provided with a receiving groove 523 that matches the outer diameter of the epitaxial tube 4. The receiving groove 523 prevents the inner diameter of the end of the epitaxial tube 4 facing the connector from being pressed down during the clamping process, and prevents the clamper 522 from clamping the epitaxial tube 4 and the connector from being difficult to assemble.

[0038] The working process of this utility model is as follows: the first positioning seat 1 fixes the conduit 3 through the Y-shaped groove 11 and aligns the Y-shaped connector of the conduit 3 with the extended tube 4. The second positioning seat 2 is equipped with the extended tube 4 groove 21 to fix the extended tube 4 connected by the strap. The inflation device 6 inflates the conduit 3 at the end of the conduit 3 facing away from the extended tube 4, so that the conduit 3 sprays high-pressure gas toward the silicone tube. The air pressure blows the side of the extended tube 4 to be assembled toward the conduit 3, so that its inner diameter is larger than the outer diameter of the Y-shaped connector of the conduit 3. Then the clamping and moving device 5 clamps and moves the extended tube 4 and the Y-shaped connector for assembly.

[0039] In summary, this utility model embodiment provides an assembly mechanism for a hemodialysis catheter, which expands the outer tube 4 and automatically assembles the outer tube 4 into place, thereby improving the assembly efficiency of the hemodialysis catheter 3, reducing the assembly difficulty, and saving a lot of labor costs.

[0040] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. An assembly mechanism for a hemodialysis catheter, characterized in that, include: The first positioning seat has a Y-shaped groove for fixing the Y-shaped connector of the conduit; The second positioning seat is disposed on one side of the first positioning seat. The second positioning seat has an extension tube groove corresponding to the Y-shaped groove, which is used to fix the extension tube. An inflation device is provided on the side of the first positioning seat facing away from the second positioning seat, and the inflation device is used to inflate one end of the conduit. A clamping and moving device is disposed on both sides of the first positioning seat. The clamping and moving device includes a power component and a clamping component. The clamping component clamps the extension tube, and the power component drives the clamping component to move.

2. The assembly mechanism for the hemodialysis catheter according to claim 1, characterized in that: The inflation device includes an outer mold, within which a conduit cavity is formed to accommodate a conduit, and a sealing element is provided on the side of the conduit cavity facing the first positioning seat.

3. The assembly mechanism for the hemodialysis catheter according to claim 2, characterized in that: The sealing element includes a sealing ring and a sealing plate. The sealing ring extends into the conduit cavity and abuts against the outer circumferential surface of the conduit. The sealing plate is disposed on the side of the sealing ring facing the first positioning seat to press the sealing ring into the conduit cavity.

4. The assembly mechanism for the hemodialysis catheter according to claim 3, characterized in that: The outer end face of the sealing ring on the side opposite to the sealing plate is inclined toward the inflation direction.

5. The assembly mechanism for the hemodialysis catheter according to claim 3, characterized in that: The sealing ring is inclined towards the inner end face of the conduit, which is in contact with the inflation direction.

6. The assembly mechanism for the hemodialysis catheter according to claim 3, characterized in that: The sealing plate is provided with screw holes for fixing to the outer mold by bolts.

7. The assembly mechanism for the hemodialysis catheter according to claim 1, characterized in that: The power component includes a cylinder, the output shaft of which is connected to a push plate, and the clamping component is fixed to the push plate.

8. The assembly mechanism for the hemodialysis catheter according to claim 7, characterized in that: The clamping component includes a clamping cylinder and two jaws symmetrically arranged vertically. The clamping cylinder is fixed to the push plate, and the jaws are rotatably connected to the clamping cylinder.

9. The assembly mechanism for the hemodialysis catheter according to claim 8, characterized in that: The end of the gripper is provided with a receiving groove that matches the outer diameter of the extension tube.

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