Annular dispensing head

Abstract

The utility model discloses an annular dispensing head, which comprises a tube sleeve, a dispensing head, a dispensing head, a dispensing head and a driving device, wherein a gluing hole for inserting a medical catheter is formed in the center of the tube sleeve; the glue inlet hole is formed in the outer wall of the pipe sleeve and is communicated with an external glue supply device; the glue bin is arranged in the pipe wall of the pipe sleeve; the annular gluing groove is formed in the inner wall of the pipe sleeve; the glue return port extends from the inner wall to the outer wall along the radial direction of the pipe sleeve; the barrier strip is arranged in the glue inlet hole; the glue inlet hole, the glue bin, the annular gluing groove and the glue return opening are sequentially communicated to form a glue inlet-gluing-glue return channel. According to the utility model, the medical catheters are inserted into the gluing holes, so that efficient dispensing can be realized, the dispensing efficiency is obviously improved, the production speed is accelerated, automation and gluing can be realized, the labor cost and the operation time are reduced, and the overall production cost is reduced; the annular gluing groove ensures that glue is evenly coated on the medical catheter, the problem of uneven gluing thickness caused by manual operation is avoided, the connection strength and the sealing performance are improved, and the overall quality stability of a product is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device processing equipment technology, specifically to a ring-shaped dispensing head. Background Technology

[0002] In the medical field, medical catheters are widely used in various medical procedures, including infusion, drainage, anesthesia, and monitoring. To ensure the safety and effectiveness of medical procedures, the effective connection and sealing performance between the catheter and its connector are crucial.

[0003] The connection processes for medical catheters and connectors are mainly divided into two types: welding (such as high-frequency pressure welding and ultrasonic welding) and adhesive bonding (such as using adhesives like cyclohexanone and tetrahydrofuran). Welding offers better connection strength and sealing, but it requires more sophisticated equipment, and the connection may experience thermal deformation or performance changes. Adhesive bonding offers relatively lower connection strength, but it is sufficient to meet the requirements of low-pressure and low-flow-rate media in the medical field. It also has advantages such as lower equipment requirements, simpler operation, compatibility with various materials, and less heat-affected zone, making it more widely used.

[0004] In adhesive bonding, dispensing is a crucial step, typically performed manually with the aid of tools. For example, adhesive can be applied to the outer wall of a rotating conduit using a syringe, or by rolling the conduit's outer wall onto a sponge soaked in adhesive. However, during manual operation, workers often have inconsistent control over the amount and location of adhesive application, potentially leading to uneven adhesive thickness. This can affect bond strength and sealing performance, resulting in inconsistent product quality and increased quality risks. Furthermore, manual dispensing requires significant manpower and time, resulting in low production efficiency and potentially creating capacity bottlenecks in large-scale production.

[0005] To overcome the above problems, there is an urgent need to develop a new type of automatic dispensing device for medical catheters. Utility Model Content

[0006] To improve the safety and reliability of medical catheter and connector connections, and to increase dispensing efficiency, this invention provides a ring-shaped dispensing head.

[0007] The technical solution adopted by this utility model is as follows: A ring-shaped dispensing head includes: a sleeve with a centrally formed adhesive application hole for inserting a medical catheter; an adhesive inlet hole disposed on the outer wall of the sleeve and connected to an external adhesive supply device; an adhesive reservoir disposed inside the sleeve wall; an annular adhesive application groove disposed on the inner wall of the sleeve; an adhesive return port extending radially from the inner wall to the outer wall of the sleeve; and a baffle strip disposed inside the adhesive inlet hole; the adhesive inlet hole, the adhesive reservoir, the annular adhesive application groove, and the adhesive return port are sequentially connected to form an adhesive inlet-adhesion-return channel.

[0008] Preferably, the width of the annular adhesive coating groove is adjustable.

[0009] Preferably, the sleeve includes an outer tube and an inner tube that fit together. The outer tube has a first end wall and a first tube wall, and the inner tube has a second end wall and a second tube wall. A first hole is provided at the center of the first end wall, and a second hole is provided at the center of the second end wall. The first hole and the second hole together form the glue application hole. The glue inlet hole is provided on the first tube wall. The annular cavity between the first tube wall and the second tube wall forms the glue tank. The gap between the first end wall and the second end wall forms the annular glue application groove. A cut extending radially from the first hole to the edge along the second end wall forms the glue return port.

[0010] Preferably, the return port is located in the direction of vertical downward movement of the second end wall.

[0011] Preferably, the outer tube has a third hole that expands outward relative to the first hole, and the inner tube has a fourth hole that expands outward relative to the second hole.

[0012] Preferably, the stop bar is disposed inside the fourth hole, and the stop bar is perpendicular to the axis of the fourth hole.

[0013] Preferably, the second pipe wall is provided with an annular piston portion near the tail end, and the outer peripheral wall of the annular piston portion is sealed and axially slidingly engaged with the inner peripheral wall of the first pipe wall.

[0014] Preferably, a flange ring is provided at one end of the tail of the second pipe wall.

[0015] This utility model has the following beneficial effects:

[0016] 1. High-efficiency dispensing: By designing a unique glue inlet-coating-return channel, medical catheters can be inserted into the glue coating hole to achieve high-efficiency dispensing, significantly improving dispensing efficiency, reducing reliance on manual operation, and accelerating production speed;

[0017] 2. Uniform adhesive application: The annular adhesive application groove ensures that the adhesive is evenly applied to the medical catheter, avoiding the problem of uneven adhesive thickness caused by manual operation, improving the connection strength and sealing performance, and enhancing the overall quality stability of the product.

[0018] 3. Adjustment function: The width of the annular glue application groove is adjustable, allowing for adjustments according to glue application needs to achieve the best glue application effect;

[0019] 4. Reduced production costs: When used in conjunction with an automatic glue supply device, it enables automated glue application, reducing labor costs and operating time, thereby lowering overall production costs. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0021] Figure 2 This is a left-side view of an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram illustrating the usage state of an embodiment of the present utility model.

[0024] 1. Medical catheter; 2. Glue inlet; 3. Glue reservoir; 4. Annular glue inlet; 5. Glue return outlet; 6. Outer tube; 7. Inner tube; 8. First end wall; 9. First tube wall; 10. Second end wall; 11. Second tube wall; 12. First hole; 13. Second hole; 14. Third hole; 15. Fourth hole; 16. Stop bar; 17. Annular piston part; 18. Flange ring part; 19. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0026] In the embodiments, such as Figures 1-3 The image shows a ring-shaped dispensing head, comprising: a sleeve with a centrally formed adhesive-coating hole 2 for inserting a medical catheter 1; an adhesive inlet 3 located on the outer wall of the sleeve and connected to an external adhesive supply device; an adhesive reservoir 4 located inside the sleeve wall; an annular adhesive-coating groove 5 located on the inner wall of the sleeve; an adhesive return port 6 extending radially from the inner wall to the outer wall of the sleeve; and a baffle 17 located inside the adhesive inlet 3. The adhesive inlet 3, adhesive reservoir 4, annular adhesive-coating groove 5, and adhesive return port 6 are sequentially connected to form an adhesive inlet-coating-return channel. This embodiment features a unique adhesive inlet-coating-return channel design. Inserting the medical catheter 1 into the adhesive-coating hole 2 enables highly efficient dispensing, significantly improving dispensing efficiency, reducing reliance on manual operation, and accelerating production speed. When the adhesive inlet 3 is connected and coordinated with an automatic adhesive supply device, automated dispensing can be achieved, reducing labor costs and operation time, thereby lowering overall production costs and improving production efficiency. The annular adhesive coating groove 5 ensures that the adhesive is evenly applied in the circumferential direction of the medical catheter 1, avoiding the problem of uneven adhesive thickness caused by manual operation, improving the connection strength and sealing performance, and enhancing the overall quality stability of the product.

[0027] In the embodiments, such as Figure 3 As shown, the width of the annular adhesive applicator 5 is adjustable. This adjustable width allows for adjustments based on adhesive application requirements, thereby regulating the amount of adhesive applied to achieve the best application effect and ensure the connection strength and sealing performance of the medical catheter 1.

[0028] In the embodiments, such as Figures 1-3As shown, the sleeve includes an outer tube 7 and an inner tube 8 that fit together. The outer tube 7 has a first end wall 9 and a first tube wall 10, and the inner tube 8 has a second end wall 11 and a second tube wall 12. A first hole 13 is provided at the center of the first end wall 9, and a second hole 14 is provided at the center of the second end wall 11. The first hole 13 and the second hole 14 together form a glue-applying hole 2. A glue inlet hole 3 is provided on the first tube wall 10. The annular cavity between the first tube wall 10 and the second tube wall 12 forms a glue tank 4. The gap between the first end wall 9 and the second end wall 11 forms an annular glue-applying groove 5. A cut extending radially from the first hole 13 to the edge along the second end wall 11 forms a glue return port 6. In this embodiment, the outer tube 7 and the inner tube 8 are concentrically assembled to form a double-layer sleeve structure, forming a complete glue-inlet-glue-applying-glue-return channel inside the double-layer sleeve. At the same time, the width of the annular glue-applying groove 5 can be adjusted by the axial sliding of the outer tube 7 and the inner tube 8, i.e., the width can be adjusted. Figure 4 The distance D in the middle. This structure uses a double-layer sleeve to reduce the processing difficulty of the overall structure and also ensures the reliability of the dispensing head itself.

[0029] In the embodiments, such as Figures 1-3 As shown, the glue return port 6 is located in the vertically downward direction of the second end wall 11. The glue return port 6 is located in a lower position to facilitate the backflow of glue, avoid glue blockage, and help maintain the smooth flow of glue channels.

[0030] In the embodiments, such as Figure 3 As shown, the outer tube 7 has a third hole 15 that expands outward relative to the first hole 13, and the inner tube 8 has a fourth hole 16 that expands outward relative to the second hole 14. Both the third hole 15 and the fourth hole 16 are tapered holes, which, together with the first hole 13 and the second hole 14, form a complete adhesive application hole 2. The third hole 15 and the fourth hole 16 serve to assist in the backflow of adhesive, and the third hole 15 also assists in the insertion of the medical catheter 1.

[0031] In the embodiments, such as Figure 2 , Figure 3 As shown, the baffle 17 is disposed inside the fourth hole 16, and the baffle 17 is perpendicular to the axis of the fourth hole 16. The baffle 17 plays an axial positioning role for the medical catheter 1, ensuring the consistency of the axial position of the annular adhesive groove 5 on the medical catheter 1, thereby ensuring the stability of the adhesive application position.

[0032] In the embodiments, such as Figure 3 As shown, the second tube wall 12 is provided with an annular piston part 18 near the tail end. The outer peripheral wall of the annular piston part 18 is sealed and axially slides into contact with the inner peripheral wall of the first tube wall 10. The annular piston part 18 and the first tube wall 10 of the outer tube 7 can ensure good sealing performance, and prevent glue leakage when the width of the annular glue groove 5 is adjusted by axial sliding between the outer tube 7 and the inner tube 8.

[0033] In the embodiments, such as Figure 3As shown, a flange ring 19 is provided at one end of the tail of the second pipe wall 12. In this embodiment, the outer pipe 7 is fixed in position, while the inner pipe 8 can slide axially. The flange ring 19 provides an operating part and a fixing part for the sliding of the inner pipe 8, which facilitates the adjustment and fixing of the position of the inner pipe 8.

[0034] The steps for applying adhesive to the outer wall of the medical catheter 1 in this embodiment are as follows:

[0035] Step 1: Adjust the axial position of the inner tube 8 to the correct position and control the annular glue-applying groove 5 to the specified width.

[0036] Step 2: Insert the medical catheter 1 into the adhesive hole 2 until the front end of the medical catheter 1 touches the retainer 17.

[0037] Step 3: Start the piston pump, peristaltic pump, pneumatic piston, or other type of glue supply device 5 to supply glue. The glue flows along the glue inlet 3, glue tank 4, and then to the annular glue coating groove 5. Figure 4 Apply glue in the direction of the solid arrow; excess glue is collected through the glue return port 6. Figure 4 The direction of the dashed arrow.

[0038] Step 4: Stop supplying adhesive with the adhesive and pull out the medical catheter 1 from the adhesive application hole 2. This adhesive application operation is now complete.

[0039] The above-mentioned operation steps can be completed by automated equipment without manual operation, resulting in low cost and good product consistency, while also being environmentally friendly and efficient.

[0040] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A ring-shaped dispensing head, characterized in that, include: The sleeve has a centrally formed adhesive hole (2) for inserting a medical catheter (1). The glue inlet (3) is located on the outer wall of the sleeve and is connected to the external glue supply device; The glue tank (4) is disposed inside the tube wall of the sleeve; An annular adhesive coating groove (5) is provided on the inner wall of the sleeve; The return port (6) extends radially from the inner wall to the outer wall of the sleeve; A baffle (17) is provided inside the glue inlet hole (3); The glue inlet (3), the glue tank (4), the annular glue coating groove (5) and the glue return port (6) are connected in sequence to form a glue inlet-glue coating-glue return channel.

2. The annular dispensing head according to claim 1, characterized in that, The width of the annular adhesive coating groove (5) is adjustable.

3. The annular dispensing head according to claim 1 or 2, characterized in that, The sleeve includes an outer tube (7) and an inner tube (8) that are inserted into each other. The outer tube (7) has a first end wall (9) and a first tube wall (10), and the inner tube (8) has a second end wall (11) and a second tube wall (12). The first end wall (9) has a first hole (13) at its center, and the second end wall (11) has a second hole (14) at its center. The first hole (13) and the second hole (14) together form the adhesive application hole (2). The glue inlet (3) is provided on the first tube wall (10), the annular cavity between the first tube wall (10) and the second tube wall (12) forms the glue tank (4), the gap between the first end wall (9) and the second end wall (11) forms the annular glue coating groove (5), and the cut extending radially from the first hole (13) to the edge along the second end wall (11) forms the glue return port (6).

4. The annular dispensing head according to claim 3, characterized in that, The return port (6) is located in the direction of vertical downwards on the second end wall (11).

5. The annular dispensing head according to claim 3, characterized in that, The outer tube (7) has a third hole (15) that expands outward relative to the first hole (13), and the inner tube (8) has a fourth hole (16) that expands outward relative to the second hole (14).

6. The annular dispensing head according to claim 5, characterized in that, The baffle (17) is disposed in the fourth hole (16) and the baffle (17) is perpendicular to the axis of the fourth hole (16).

7. The annular dispensing head according to claim 3, characterized in that, The second pipe wall (12) is provided with an annular piston part (18) near the tail end. The outer peripheral wall of the annular piston part (18) is sealed and axially sliding with the inner peripheral wall of the first pipe wall (10).

8. The annular dispensing head according to claim 7, characterized in that, The tail end of the second pipe wall (12) is provided with a flange ring (19).

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