Medical thick catheter outer glue coating equipment

Abstract

The application discloses a medical thick catheter glue coating equipment, which comprises a rack, a glue tank arranged on the rack, a pipe clamping assembly and a glue coating assembly arranged on the rack, the glue coating assembly comprising a glue coating drive arranged on the rack, an upper glue coating head, an upper glue coating arc surface matched with the thick catheter arranged on the upper glue coating head, a lower glue coating head, a lower glue coating arc surface matched with the thick catheter arranged on the lower glue coating head, a glue storage groove arranged on the upper glue coating head, a first glue flow hole arranged on the upper glue coating head, one end of the first glue flow hole being communicated with the glue storage groove, and the other end of the first glue flow hole being communicated with the upper glue coating arc surface. The upper glue coating head and the lower glue coating head are driven by the glue coating drive to move along the axial direction of the thick catheter. The glue stored in the glue storage groove flows to the upper glue coating arc surface along the first glue flow hole under the action of gravity, so that the upper glue coating arc surface and the lower glue coating arc surface both store sufficient glue, and thus sufficient glue is coated on the outer circumferential surface of the end of the thick catheter.

Description

Technical Field

[0001] This application relates to the field of adhesive coating technology, and in particular to an adhesive coating device for a medical thick catheter. Background Technology

[0002] Dialysis is a mature and effective life-sustaining technology. Through extracorporeal circulation, it utilizes diffusion and ultrafiltration principles to replace the excretory and regulatory functions of failing kidneys, greatly prolonging the lives of uremia patients. Dialysis requires the use of extracorporeal circulation technology, which necessitates the use of dialyzers, arterial tubing, venous tubing, and other structures to form an extracorporeal circulation loop.

[0003] The thick-walled catheter is a key component required to form arterial or venous tubing. The connection between the thick-walled catheter and other components is generally achieved by adhesive bonding, that is, both ends of the thick-walled catheter need to be coated with adhesive.

[0004] Understandably, the connection stability of the large-diameter catheter requires high precision, meaning it needs to ensure that a sufficient amount of adhesive is evenly applied to the outer circumference of the catheter to guarantee a stable connection with other components. If the connection between the catheter and other components is unstable, the catheter may separate from other components during extracorporeal circulation, leading to a break in the extracorporeal circulation circuit and posing a significant safety risk, potentially even resulting in patient death. In existing catheter adhesive application devices, the first clamping finger 3 and the second clamping finger 4 are inserted into the adhesive tank, adhering adhesive to them. The adhesive is then applied to the outer circumference of the catheter's end through contact between the first clamping finger 3 and the second clamping finger 4 and the catheter. However, because the adhesive flows down rapidly under gravity, and the large amount of adhesive required for the catheter, it is often impossible to apply enough adhesive to the catheter.

[0005] Therefore, it is necessary to propose a medical thick catheter external adhesive coating device to apply sufficient adhesive to the outer circumferential surface of the end of the thick catheter, which has become an important technical problem that urgently needs to be solved. Utility Model Content

[0006] This application provides a medical thick catheter external adhesive coating device, which aims to solve the problem that sufficient adhesive cannot be applied to the thick catheter in the prior art.

[0007] To achieve the above objectives, this application proposes a medical thick catheter external adhesive coating device, including a frame, an adhesive tank on the frame, a tube clamping assembly and an adhesive coating assembly on the frame, the adhesive coating assembly including: an adhesive coating drive, the adhesive coating drive being provided on the frame; an upper adhesive coating head, the upper adhesive coating head having an upper adhesive coating arc surface adapted to the thick catheter; a lower adhesive coating head, the lower adhesive coating head having a lower adhesive coating arc surface adapted to the thick catheter; an adhesive retention tank, the upper adhesive coating head having an adhesive retention tank; and a first adhesive flow orifice, the upper adhesive coating head having a first adhesive flow orifice, one end of the first adhesive flow orifice being connected to the adhesive retention tank, and the other end of the first adhesive flow orifice being connected to the upper adhesive coating arc surface.

[0008] In some embodiments, the adhesive application assembly further includes a second adhesive flow hole, wherein the second adhesive flow hole is provided on the lower adhesive application head and the second adhesive flow hole communicates with the lower adhesive application arc surface.

[0009] In some embodiments, the adhesive application assembly further includes an adhesive application arc groove, wherein the adhesive application arc groove is provided on the upper adhesive application arc surface and the adhesive application arc groove is connected to the first adhesive flow hole.

[0010] In some embodiments, the adhesive application drive includes: a shaft shifter, which is movably disposed on the frame; a shaft shifter, which is disposed on the frame and connected to the shaft shifter; and a vertical shifter, which is disposed on the shaft shifter.

[0011] In some embodiments, the glue application drive further includes: an adjustment drive connected to a vertical movement drive; an upper glue application plate connected to the adjustment drive; a lower glue application plate connected to the adjustment drive; and a connecting plate, wherein the upper glue application head is mounted on the upper glue application plate via the connecting plate, and the lower glue application head is connected to the lower glue application plate via the connecting plate.

[0012] In some embodiments, the tube clamping assembly includes: a first tube clamping drive disposed on a frame; a second tube clamping drive disposed on a frame; and a clamping plate, wherein the first tube clamping drive is connected to a clamping plate and the second tube clamping drive is connected to another clamping plate.

[0013] In some embodiments, the adhesive application assembly further includes: a glue applicator, which is connected to a glue tank via a pipe; and a liquid level detector, which is installed inside the glue applicator.

[0014] This application proposes a medical thick-tube external adhesive coating device, including a frame with an adhesive tank, a tube clamping assembly, and an adhesive coating assembly. The adhesive coating assembly includes: an adhesive coating drive mounted on the frame; an upper adhesive coating head with an upper adhesive coating arc surface adapted to the thick-tube; a lower adhesive coating head with a lower adhesive coating arc surface adapted to the thick-tube; an adhesive retention tank on the upper adhesive coating head; and a first adhesive flow orifice on the upper adhesive coating head, one end of which connects to the adhesive retention tank, and the other end of which connects to the upper adhesive coating arc surface. During the external adhesive coating process, the tube clamping assembly holds the thick-tube. The adhesive coating drive immerses the upper and lower adhesive coating heads into the adhesive tank and then lifts them up. After lifting, the upper and lower adhesive coating arc surfaces are made coaxial with the thick-tube. The adhesive coating drive then moves the upper and lower adhesive coating heads along the axial direction of the thick-tube. Because the glue on the lower coating arc surface is difficult to drip quickly from the lower coating head under the action of gravity, while the glue stored in the glue tray flows along the first glue flow hole to the upper coating arc surface under the action of gravity, so that both the upper and lower coating arc surfaces have sufficient glue. Sufficient glue is applied to the outer circumference of the end of the thick conduit, which can make the thick conduit form a stable and reliable connection with other components. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a medical thick catheter external coating device according to an embodiment of this application; Figure 2 This is a three-dimensional structural diagram of the clamping assembly in one embodiment of this application; Figure 3 This is a front view of the clamping assembly in one embodiment of this application; Figure 4 for Figure 3 Sectional view of section AA; Figure 5 This is a three-dimensional structural diagram of an adhesive application component in one embodiment of this application; Figure 6 for Figure 5 A magnified view of a section at point B in the middle; Figure 7 This is a front view of the clamping component in one embodiment of this application; Figure 8 for Figure 7 A sectional view of the central CC section; Figure 9 for Figure 8 A magnified view of a section at point D; Figure 10 This is a schematic diagram of another three-dimensional structure of the adhesive application component in one embodiment of this application.

[0016] In the diagram: Frame 1, Glue application assembly 2, Slide rail 21, Slider 22, Shaft shift seat 23, Shaft shift drive 24, Vertical shift drive 25, Upper glue application plate 26, Lower glue application head 27, Glue tank 28, Upper glue application head 29, Lower glue application plate 210, Connecting plate 211, Lower glue application arc surface 212, Second glue flow hole 213, Upper glue application arc surface 214, Glue retention groove 215, Adjustment drive 216, Liquid level detector 217, Glue replenishment cylinder 218, Connecting pipe 219, First glue flow hole 220, Glue application arc groove 221, Pipe clamping assembly 3, First pipe clamping drive 31, First main plate 32, Second main plate 33, Second pipe clamping drive 34, Guide plate 35, Clamping plate 36, Coarse guide tube 4. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, this application discloses a medical thick catheter external adhesive coating device, including a frame 1, an adhesive groove 28 disposed on the frame 1, a tube clamping assembly 3 and an adhesive coating assembly 2 disposed on the frame 1, the adhesive coating assembly 2 including: an adhesive coating drive disposed on the frame 1; an upper adhesive coating head 29, the upper adhesive coating head 29 being provided with an upper adhesive coating arc surface 214 adapted to the thick catheter 4; a lower adhesive coating head 27, the lower adhesive coating head 27 being provided with a lower adhesive coating arc surface 212 adapted to the thick catheter 4; an adhesive retention groove 215 disposed on the upper adhesive coating head 29; and a first adhesive flow hole 220 disposed on the upper adhesive coating head 29, one end of the first adhesive flow hole 220 being connected to the adhesive retention groove 215, and the other end of the first adhesive flow hole 220 being connected to the upper adhesive coating arc surface 214.

[0019] The frame 1 is the structural foundation of the external adhesive coating equipment for the coarse conduit 4. All other structures on the external adhesive coating equipment for the coarse conduit 4 are directly or indirectly mounted on the frame 1. The adhesive tank 28 stores adhesive. The clamping assembly 3 is used to clamp the coarse conduit 4. The upper adhesive head 29 and the lower adhesive head 27 are immersed in the adhesive tank 28 and then lifted, so that adhesive adheres to the upper adhesive arc surface 214 and the lower adhesive arc surface 212. The adhesive coating drive drives the upper adhesive head 29 and the lower adhesive head 27 to move along the axial direction of the coarse conduit 4. The upper adhesive arc surface 214 and the lower adhesive arc surface 212 are coaxial with the coarse conduit 4. At this time, the adhesive on the upper adhesive arc surface 214 and the lower adhesive arc surface 212 will be applied to the end of the coarse conduit 4.

[0020] The glue retention tank 215 and the first glue flow hole 220 are the core structures of the glue coating equipment for the coarse guide tube 4. Because the upper glue coating arc surface 214 faces downwards while the lower glue coating arc surface 212 faces upwards, the glue on the lower glue coating arc surface 212 is difficult to quickly flow down from the lower glue coating head 27 under the influence of gravity. However, the glue on the upper glue coating arc surface 214 flows down quickly under the influence of gravity, resulting in less glue adhering to the upper glue coating arc surface 214, which cannot meet the glue quantity requirements of the end of the coarse guide tube 4. The glue retention tank 215 can store sufficient glue when the upper glue coating head 29 and the lower glue coating head 27 are immersed in the glue tank 28. When the upper glue coating head 29 and the lower glue coating head 27 move along the axial direction of the coarse guide tube 4, the glue in the glue retention tank 215 flows down to the upper glue coating arc surface 214 under the influence of gravity along the first glue flow hole 220, ensuring sufficient glue on the upper glue coating arc surface 214.

[0021] Specifically, during the adhesive application process on the outer surface of the coarse conduit 4, the clamping assembly 3 holds the coarse conduit 4 in place. The adhesive application drive immerses the upper adhesive application head 29 and the lower adhesive application head 27 into the adhesive tank 28 and then lifts them up. After lifting, the upper adhesive application arc surface 214 and the lower adhesive application arc surface 212 are coaxial with the coarse conduit 4. The adhesive application drive then moves the upper adhesive application head 29 and the lower adhesive application head 27 along the axial direction of the coarse conduit 4. Since the adhesive on the lower adhesive application arc surface 212 is difficult to flow down from the lower adhesive application head 27 quickly under the action of gravity, the adhesive stored in the adhesive retention tank 215 flows down the first adhesive flow hole 220 to the upper adhesive application arc surface 214 under the action of gravity. This ensures that both the upper adhesive application arc surface 214 and the lower adhesive application arc surface 212 have sufficient adhesive. The sufficient amount of adhesive applied to the outer circumferential surface of the end of the coarse conduit 4 allows the coarse conduit 4 to form a stable and reliable connection with other components.

[0022] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the adhesive application assembly 2 further includes a second adhesive flow hole 213. The second adhesive flow hole 213 is provided on the lower adhesive application head 27 and communicates with the lower adhesive application arc surface 212. Since the lower adhesive application arc surface 212 is oriented upwards, the adhesive on the lower adhesive application arc surface 212 is difficult to flow down from the lower adhesive application head 27 quickly under the action of gravity, which may result in excessive adhesive on the lower adhesive application arc surface 212. Excess adhesive may flow to the inner circumferential surface of the coarse conduit 4, affecting the use of the coarse conduit 4. The second adhesive flow hole 213 is used to drain part of the adhesive from the lower adhesive application arc surface 212 to avoid excessive adhesive on the lower adhesive application arc surface 212.

[0023] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the adhesive application assembly 2 further includes an adhesive application arc groove 221. The adhesive application arc groove 221 is provided on the upper adhesive application arc surface 214 and connects to the first adhesive flow hole 220. The adhesive flowing down from the first adhesive flow hole 220 will fill the adhesive application arc groove 221. The adhesive application arc groove 221 can effectively guide the adhesive left in the first adhesive flow hole 220, preventing the adhesive from condensing on the top of the upper adhesive application arc surface 214 and improving the uniformity of adhesive application.

[0024] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in some embodiments, the adhesive application drive includes: a shaft shifter 23, movably mounted on the frame 1; a shaft shifter 24, mounted on the frame 1 and connected to the shaft shifter 23; the shaft shifter 24 is a cylinder, and its output rod is screwed to a first connecting plate 211, which is connected to the shaft shifter 23 by screws, thus forming a connection between the shaft shifter 24 and the shaft shifter 23; and a vertical shifter 25, mounted on the shaft shifter 23 and also a cylinder, which is mounted on the shaft shifter 23 by screws. The vertical shifter 25 drives the upper adhesive application head 29 and the lower adhesive application head 27 to be immersed in the adhesive tank 28, and can also lift the upper adhesive application head 29 and the lower adhesive application head 27. The shaft shifter 24 drives the upper adhesive application head 29 and the lower adhesive application head 27 to move axially along the coarse guide tube 4.

[0025] In this embodiment, a slide rail 21 is provided on the frame 1, and a slider 22 is provided on the shaft shifter 23. The slider 22 is adapted to the slide rail 21. Through the cooperation of the slider 22 and the slide rail 21, the stability of the movement of the shaft shifter 23 is improved.

[0026] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, in some embodiments, the adhesive application drive further includes: an adjustment drive 216, which is connected to a vertical movement drive 25; the output rod of the vertical movement drive 25 is screwed to a second connecting plate 211, which is connected to the adjustment drive 216 by screws. An upper adhesive application plate 26 is connected to the adjustment drive 216; a lower adhesive application plate 210 is also connected to the adjustment drive 216; a connecting plate 211 is used to mount the upper adhesive application head 29 to the upper adhesive application plate 26, and the lower adhesive application head 27 is connected to the lower adhesive application plate 210 via the connecting plate 211. The adjustment drive 216 is used to separate or align the upper adhesive application plate 26 and the lower adhesive application plate 210, thereby separating or aligning the upper adhesive application head 29 and the lower adhesive application head 27. This facilitates the cleaning or maintenance of the upper adhesive application head 29 and the lower adhesive application head 27.

[0027] In this embodiment, the upper glue applicator 29 is provided with two upper glue applicator arc surfaces 214, and the lower glue applicator 27 is also provided with two lower glue applicator arc surfaces 212. The upper glue applicator plate 26 is provided with five upper glue applicator heads 29, and the lower glue applicator plate 210 is also provided with five lower glue applicator heads 27.

[0028] Preferably, the adjustment drive 216 is a parallel gripper cylinder, which can drive the lower adhesive plate 210 and the upper adhesive plate 26 to move closer or further apart. The adjustment drive 216 can also be a regular cylinder. When the adjustment drive 216 is a regular cylinder, the lower adhesive plate 210 is fixedly connected to the adjustment drive 216, and the output rod of the adjustment drive 216 is screwed with a third connecting plate 211. The third connecting plate 211 is connected to the upper adhesive plate 26 by screws.

[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the clamping assembly 3 includes: a first clamping drive 31, which is disposed on the frame 1; the first clamping drive 31 is a cylinder, and its output rod is screwed to a fourth connecting plate 211, which is connected to a first main plate 32 by screws; a second clamping drive 34, which is disposed on the frame 1; the second clamping drive 34 is a cylinder, and its output rod is screwed to a fifth connecting plate 211, which is connected to a second main plate 33 by screws; and a clamping plate 36, which is connected to one clamping plate 36 by the first clamping drive 31 and to another clamping plate 36 by the second clamping drive 34. The clamping plate 36 is connected to the first main plate 32 or the second main plate 33 by screws, and the clamping plates 36 on the first main plate 32 and the second main plate 33 are aligned along the width direction of the frame 1.

[0030] This also includes multiple pairs of spaced guide plates 35. The two guide plates 35 in the same pair are aligned along the width direction of the frame 1. The two guide plates 35 in the same pair are joined together to form 10 guide holes. The inner diameter of the guide holes matches the outer diameter of the coarse guide tube 4. In the pair of guide plates 35, one guide plate 35 is connected to the first main plate 32 by screws, and the other guide plate 35 is connected to the second main plate 33 by screws.

[0031] See Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the glue application assembly 2 also includes: a glue filling cylinder 218, which is connected to the glue tank 28 via a connecting pipe 219; and a level detector 217, which is installed inside the glue filling cylinder 218. The level detector 217 is used to detect the glue level and fill the glue tank when it is insufficient. The glue filling cylinder 218 is also provided with a glue filling pipe for filling glue. The glue filling cylinder 218 is also provided with a glue discharge pipe for discharging glue from the glue tank 28 when necessary.

[0032] In this liquid level detector 217, the float rises and falls with the liquid level, driving an internal reed switch or relay to actuate via magnetic coupling, outputting a liquid level control signal. The float of the liquid level detector 217 is typically made of Teflon or stainless steel and contains a magnet. The liquid level detector 217 also includes a guide rod along which the float moves up and down. A reed switch is installed inside the guide rod and is activated or deactivated by magnetic force.

[0033] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A medical thick catheter external adhesive coating device, comprising a frame (1), wherein an adhesive tank (28) is provided on the frame (1), and a tube clamping assembly (3) and an adhesive coating assembly (2) are provided on the frame (1), characterized in that, The adhesive coating assembly (2) includes: The glue application drive is provided on the frame (1); The top coating head (29) is provided with a top coating arc surface (214) adapted to the thick conduit (4). The lower adhesive applicator (27) is provided with a lower adhesive applicator arc surface (212) adapted to the thick conduit (4). Adhesive retention groove (215), the adhesive application head (29) is provided with adhesive retention groove (215); The first adhesive flow hole (220) is provided on the upper adhesive head (29). One end of the first adhesive flow hole (220) is connected to the adhesive retention groove (215), and the other end of the first adhesive flow hole (220) is connected to the upper adhesive arc surface (214).

2. The medical thick catheter external coating device according to claim 1, characterized in that, The adhesive coating assembly (2) further includes: The second adhesive flow hole (213) is provided on the lower adhesive head (27), and the second adhesive flow hole (213) is connected to the lower adhesive arc surface (212).

3. The medical thick catheter external coating device according to claim 1, characterized in that, The adhesive coating assembly (2) further includes: A glue-coating arc groove (221) is provided on the upper glue-coating arc surface (214), and the glue-coating arc groove (221) is connected to the first glue-flowing hole (220).

4. The medical thick catheter external coating device according to claim 1, characterized in that, The adhesive application drive includes: Shaft shifter (23), which is movably disposed on the frame (1); A shaft shift drive (24) is disposed on the frame (1) and connected to the shaft shift seat (23). Vertical movement drive (25), which is disposed on the shaft shifter (23).

5. The medical thick catheter external coating device according to claim 4, characterized in that, The adhesive application drive also includes: Adjustment drive (216), the adjustment drive (216) is connected to the vertical movement drive (25); Upper adhesive plate (26), the upper adhesive plate (26) is connected to the adjustment drive (216); The lower adhesive plate (210) is connected to the adjustment drive (216). The upper glue applicator (29) is mounted on the upper glue applicator plate (26) via the connecting plate (211), and the lower glue applicator (27) is connected to the lower glue applicator plate (210) via the connecting plate (211).

6. The medical thick catheter external coating device according to claim 1, characterized in that, The clamp assembly (3) includes: First clamp drive (31), the first clamp drive (31) is disposed on the frame (1); The second clamp drive (34) is disposed on the frame (1); Clamping plate (36), the first clamping tube drive (31) is connected to one of the clamping plates (36), and the second clamping tube drive (34) is connected to the other clamping plate (36).

7. The medical thick catheter external coating device according to claim 1, characterized in that, The adhesive coating assembly (2) further includes: A glue filling cylinder (218) is connected to the glue tank (28) via a pipe. Liquid level detector (217), the liquid level detector (217) is installed inside the glue filling cylinder (218).

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