Drainage catheter melting head forming device

Abstract

The invention discloses a drainage catheter melting head forming device which comprises a base, a translation driving mechanism, a mold seat, a core needle seat and a core needle, the translation driving mechanism is arranged on the base, the mold seat is arranged on the base and located at one end of the translation driving mechanism in the translation direction, and the core needle seat is in transmission connection with the translation driving mechanism. The core needle is provided with a large-diameter body and a small-diameter body, the large-diameter body is connected to the core needle seat, the small-diameter body is connected to one end of the large-diameter body, a reinforced core limiting table is formed between the large-diameter body and the small-diameter body, and the translation driving mechanism can drive the core needle seat to drive the core needle to be close to or away from the mold seat. One end of the reinforcing core can abut against the limiting table, the translation driving mechanism drives the core needle base to move horizontally to be close to the mold base, and when the head end of the guide pipe is pushed into a heated mold, the limiting table limits the reinforcing core to move backwards in the axial direction, so that the end head structure of the produced drainage guide pipe is good in hardness, good in product quality stability and few in defective products.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a drainage catheter melting head forming device. Background Art

[0002] Drainage catheters are a type of medical auxiliary equipment, which are mainly used to guide the accumulated fluid (such as blood, pus, exudate, etc.) or gas in the body to the outside of the body after surgery or during specific medical procedures, so as to promote wound healing and prevent infection. Drainage catheters used in interventional surgery need to be made into tapered and hardened catheters to facilitate insertion through the skin into the patient's body and reduce damage to the patient. In the production process of this type of drainage catheter, a catheter with straight ends is first made, and then a short straight reinforcing core is made. The hardness of the reinforcing core is higher than that of the catheter, and then the drainage catheter melting head equipment is used to make the tip of the tube end.

[0003] The drainage catheter melting head device comprises a base, a translation driving mechanism, a mold seat, a core needle seat and a core needle. The translation driving mechanism is arranged on the base, the mold seat is arranged on the base, and the mold seat is located at one end of the translation driving mechanism along the translation direction. The core needle seat is connected to the translation driving mechanism in a transmission manner, and the core needle is a slender needle body. The translation driving mechanism can drive the core needle seat to drive the core needle to move closer to or away from the mold seat.

[0004] In the process of melting the drainage catheter head, the mold on the mold seat is usually heated, and then the reinforcing core is inserted into the interior of the catheter, the catheter with the reinforcing core is placed on the core needle, and then the translation drive mechanism is started to drive it, and the core needle seat is translated close to the mold seat, so that the head end of the catheter is pushed into the heated mold, and the heating makes the head end of the catheter and the reinforcing core wrapping effect merge into one, and the reinforcing core is not exposed and formed into a pointed cone shape. Since there is no limit or fixed structure between the reinforcing core and the catheter, when the catheter with the reinforcing core is pushed into the mold for heating, the reinforcing core may have the risk of axially moving backward to one side of the end of the catheter, and the stability of the processing process is poor, so that the end structure hardness of the drainage catheter produced is poor, and there are many defective products.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] In order to solve one of the above technical defects, the present invention provides a drainage catheter melting head forming device.

[0007] This application provides the following technical solutions:

[0008] A drainage catheter melting head forming device, comprising:

[0009] Base;

[0010] A translation driving mechanism, wherein the translation driving mechanism is arranged on the base;

[0011] A mold seat, the mold seat is arranged on the base, and the mold seat is located at one end of the translation driving mechanism along the translation direction;

[0012] A core needle seat, the core needle seat is drivingly connected to the translation drive mechanism;

[0013] A core needle, the core needle having a thick diameter body and a thin diameter body, the thick diameter body is connected to the core needle seat, the thin diameter body is connected to one end of the thick diameter body, and a reinforcing core limit platform is formed between the thick diameter body and the thin diameter body;

[0014] The translation driving mechanism can drive the core needle seat to drive the core needle to approach or move away from the mold seat.

[0015] Optionally, a cone section is provided at one end of the thick-diameter body close to the thin-diameter body;

[0016] In the direction from the thin-diameter body to the thick-diameter body, the outer diameter of the cone section gradually increases.

[0017] Optionally, the core needle seat comprises a main seat body, a buffer seat and an elastic support seat;

[0018] The main seat body is transmission-connected to the translation drive mechanism;

[0019] The buffer seat is slidably disposed on the main seat body, the elastic support seat is disposed on the main seat body, the elastic support seat is located on a side of the buffer seat away from the mold seat, and the elastic support seat elastically abuts against the buffer seat;

[0020] The thick-diameter body of the core needle is fixed on the buffer seat.

[0021] Optionally, a guide rail is provided on the main seat body, and the guide rail extends along the translation direction of the translation mechanism;

[0022] A sliding block is arranged on the buffer seat;

[0023] The slider is slidably connected to the guide rail.

[0024] Optionally, the elastic support seat includes a seat frame and an elastic component;

[0025] The seat frame is fixed to one end of the main seat body away from the mold seat;

[0026] Two ends of the elastic component respectively abut against the seat frame and the buffer seat.

[0027] Optionally, the buffer seat has a receiving groove;

[0028] The elastic support seat includes a guide member, the guide member is fixed to the seat frame, and the guide member extends into the receiving groove;

[0029] The elastic component is sleeved on the guide member;

[0030] One end of the elastic component abuts against the guide member, and the other end of the elastic component is accommodated in the accommodation groove and abuts against the buffer seat.

[0031] Optionally, the drainage catheter melting tip forming device includes a fixing component;

[0032] The fixing assembly is arranged at one end of the main seat body close to the mold seat;

[0033] The fixing assembly has a clamp, and the clamp is used to clamp or release the core needle and the tube body sleeved on the core needle.

[0034] Optionally, the mold base has an end plate, a melting head and a heating element;

[0035] The end plate is fixed on the base;

[0036] The fusion head is arranged on the end plate, and the fusion head has a through vertebral cavity;

[0037] The heating element is arranged on the end plate, and the heating element can be sleeved on the melting head element.

[0038] Optionally, the drainage catheter melting head forming device includes a driving member, a first gear and a second gear;

[0039] The fusion head is rotatably arranged on the end plate, and the first gear is connected to the fusion head;

[0040] The second gear is rotatably connected to the end plate, and the second gear is meshed with the first gear;

[0041] The driving member is disposed on the end plate, and the driving member is connected to the second gear.

[0042] Optionally, the translation drive mechanism includes a main body, a motor and a lead screw;

[0043] The motor is arranged at one end of the main body, and the lead screw is rotatably arranged at the main body;

[0044] The core needle seat is threadedly connected to the lead screw, and the core needle seat is slidably connected to the main body;

[0045] The motor is connected to the lead screw in a transmission manner to drive the lead screw to rotate, so as to drive the core needle seat to translate along the main body.

[0046] By adopting the above technical solution, the present application has the following beneficial effects:

[0047] In the drainage catheter melting head forming device of the present application, in the drainage catheter melting head process, one end of the reinforcing core can be against the limit table, and the translation drive mechanism drives the core needle seat to translate close to the mold seat. When the head end of the catheter is pushed into the heated mold, the limit table limits the axial backward movement of the reinforcing core, so that the end head structure of the drainage catheter produced has good hardness, good product quality stability, and less defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 A schematic diagram of the structure of a drainage catheter melting head forming device provided in an embodiment of the present disclosure;

[0050] Figure 2 Another perspective view of the drainage catheter melting tip forming device provided in an embodiment of the present disclosure;

[0051] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0052] Figure 4 A schematic structural diagram of the cooperation between a core needle seat, a core needle and a fixing assembly of a drainage catheter melting tip forming device provided in an embodiment of the present disclosure;

[0053] Figure 5 A schematic structural diagram of the end of a core needle of a drainage catheter melting tip forming device provided in an embodiment of the present disclosure;

[0054] Figure 6 A schematic structural diagram of a main seat body of a drainage catheter melting head forming device provided in an embodiment of the present disclosure;

[0055] Figure 7 A schematic diagram of the structure of a buffer seat of a drainage catheter melting head forming device provided in an embodiment of the present disclosure;

[0056] Figure 8 A schematic diagram of the structure of the clamping jaws of the drainage catheter melting head forming device provided in an embodiment of the present disclosure.

[0057] In the figure: base 1, translation drive mechanism 2, main body 21, motor 22, reducer 23, coupling 24, mold base 3, end plate 31, melting head 32, heating element 33, core needle base 4, main base body 41, guide rail 411, buffer base 42, slider 421, accommodating groove 422, elastic support base 43, base frame 431, elastic component 432, guide member 433, cap body 4331, stud section 4332, guide column 4333, core needle 5, thick diameter body 51, cone section 511, thin diameter body 52, limit platform 53, fixing assembly 6, finger cylinder 61, slide groove 611, sliding block 62, clamp 63, clamping claw 631, clamping notch 6311, driving member 7, first gear 8, second gear 9. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] See also Figures 1 to 8 As shown, the embodiment of the present disclosure provides a drainage catheter melting head forming device, comprising: a base 1, a translation drive mechanism 2, a mold seat 3, a core needle seat 4 and a core needle 5. The translation drive mechanism 2 is arranged on the base 1. The mold seat 3 is arranged on the base 1, and the mold seat 3 is located at one end of the translation drive mechanism 2 along the translation direction. The core needle seat 4 is connected to the translation drive mechanism 2 in a transmission connection. The core needle 5 has a thick body 51 and a thin body 52, the thick body 51 is connected to the core needle seat 4, the thin body 52 is connected to one end of the thick body 51, and a reinforcing core limit platform 53 is formed between the thick body 51 and the thin body 52. ​​The translation drive mechanism 2 can drive the core needle seat 4 to drive the core needle 5 to approach or move away from the mold seat 3. The cross-sectional diameter of the reinforcing core is between the cross-sectional diameters of the thin body 52 and the thick body 51, so as to ensure that the reinforcing core can be sleeved on the thin body 52, and one end of the reinforcing core can abut against the limit platform 53. The core needle 5 of the drainage catheter melting head forming device of the present application comprises a thick-diameter body 51 and a thin-diameter body 52, and a reinforcing core limiting platform 53 is formed between the thick-diameter body 51 and the thin-diameter body 52. ​​In the drainage catheter melting head process, the reinforcing core can be sleeved on the thin-diameter body 52, and one end of the reinforcing core can be abutted against the limiting platform 53. When the translation driving mechanism 2 drives the core needle seat 4 to translate close to the mold seat 3 so that the head end of the catheter is pushed into the heated mold, the limiting platform 53 limits the axial backward movement of the reinforcing core, so that the end structure hardness of the drainage catheter produced is good, the stability of the processing process is good, and the quality of the produced products is stable with less defective products.

[0060] like Figure 5As shown, the end of the thick body 51 close to the thin body 52 is provided with a cone section 511, and the outer diameter of the cone section 511 gradually increases in the direction from the thin body 52 to the thick body 51. In the process of melting the drainage catheter, the catheter can be first sleeved on the core needle 5, and then the reinforcing core can be installed and sleeved on the thin body 52, and one end of the reinforcing core can be pressed against the limit platform 53, so that the position between the reinforcing core and the catheter is fixed, and when the core needle 5 equipped with the reinforcing core and the catheter is pushed into the mold in the mold seat 3, the cone section 511 plays the role of internal support, so that the coating effect of the catheter and the reinforcing core is integrated into a pointed cone shape, and the cone section 511 has a supporting function for the molding, and the effect of forming a cone surface is good.

[0061] In one possible embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the core needle seat 4 has a main seat body 41, a buffer seat 42 and an elastic support seat 43, and the main seat body 41 is transmission-connected to the translation drive mechanism 2. The buffer seat 42 is slidably arranged on the main seat body 41, and the elastic support seat 43 is arranged on the main seat body 41. The elastic support seat 43 is located on the side of the buffer seat 42 away from the mold seat 3, and the elastic support seat 43 elastically presses against the buffer seat 42. The thick-diameter body 51 of the core needle 5 is fixed on the buffer seat 42. When the translation drive mechanism 2 drives the core needle seat 4 to drive the core needle 5 to approach the mold seat 3, the core needle 5 may be misaligned. At this time, the core needle 5 presses against the mold seat 3, and there will be a reaction force toward the side of the elastic support seat 43. The buffer seat 42 and the elastic support seat 43 are elastically matched, so that the reaction force is buffered. If the buffer seat 42 and the elastic support seat 43 are not provided, the core needle 5 may be damaged, affecting the normal operation of the equipment.

[0062] like Figure 4 , Figure 6 and Figure 7 As shown, the main seat body 41 is provided with a guide rail 411, and the guide rail 411 extends along the translation direction of the translation mechanism, and the buffer seat 42 is provided with a slider 421, and the slider 421 is slidably connected to the guide rail 411. When the core needle 5 is misaligned, the core needle 5 will have a reaction force toward the elastic support seat 43, and the reaction force drives the buffer seat 42 to slide along the guide rail 411 and squeeze the elastic support seat 43.

[0063] like Figure 4As shown, the elastic support seat 43 includes a seat frame 431 and an elastic component 432. The seat frame 431 is fixed to one end of the main seat body 41 away from the mold seat 3, and the two ends of the elastic component 432 are respectively against the seat frame 431 and the buffer seat 42. The elastic component 432 can be a spring.

[0064] like Figure 2 , Figure 4 and Figure 7 As shown, the buffer seat 42 has a receiving groove 422, and the elastic support seat 43 includes a guide member 433, which is fixed to the seat frame 431 and extends into the receiving groove 422. The elastic component 432 is sleeved on the guide member 433. One end of the elastic component 432 abuts against the guide member 433, and the other end of the elastic component 432 is accommodated in the receiving groove 422 and abuts against the buffer seat 42. The receiving groove 422 plays a role in positioning the elastic component 432 to prevent the end of the elastic component 432 from tilting outward. The guide member 433 includes a cap body 4331, a stud section 4332 and a guide column 4333. The cap body 4331 is connected to the stud section 4332, the guide column 4333 is connected to the stud end, a thread groove is provided on the seat frame 431, the guide member 433 passes through the thread groove, and the stud section 4332 is threadedly connected to the thread groove. A step is formed between the stud section 4332 and the guide column 4333, the elastic component 432 is sleeved on the guide column 4333, and the two ends of the elastic component 432 abut against the step and the receiving groove 422. The distance between the buffer seat 42 and the seat frame 431 can be adjusted by rotating the cap body 4331, thereby adjusting the size of the elastic force between the buffer seat 42 and the seat frame 431.

[0065] In one possible embodiment, Figure 1 , Figure 4 and Figure 8As shown, the drainage catheter melting head forming device includes a fixing component 6. The fixing component 6 is arranged at one end of the main seat body 41 close to the mold seat 3, and the fixing component 6 has a clamp 63, and the clamp 63 is used to clamp or release the core needle 5 and the tube body sleeved on the core needle 5. The fixing component 6 includes a finger cylinder 61, two sliding blocks 62 and the clamp 63. The finger cylinder 61 is connected to the main seat body 41, and a slide groove 611 is arranged on the finger cylinder 61. Both of the sliding blocks 62 can be slidably arranged in the slide groove 611. The clamp 63 includes two clamps 631, and the two clamps 631 are respectively connected to the corresponding sliding blocks 62. The finger cylinder 61 drives the two sliding blocks 62 to drive the two clamps 631 to move closer to each other or move away from each other in the opposite direction to perform a clamping or releasing action. One end of the core needle 5 is connected to the core needle seat 4, and the other end of the core needle 5 is a suspended end. The suspended end is easy to tilt downward under the action of gravity, which affects the smooth passage of the core needle 5 through the mold seat 3. The clamp 63 and the suspended end of the core needle 5 are clamped, so that the core needle 5 can always maintain a horizontal state, which is easy to align with the mold seat 3. The two clamping jaws 631 are provided with a clamping notch 6311 on the side facing each other. When the two sliding blocks 62 are close to each other, the clamping notches 6311 on the two clamping jaws 631 are connected to form a bayonet. The bayonet is used to clamp the outer wall of the catheter on the core needle 5.

[0066] In one possible embodiment, Figure 1 and Figure 3 As shown, the mold base 3 has an end plate 31, a fusion head 32 and a heating element 33. The end plate 31 is fixed on the base 1. The fusion head 32 is arranged on the end plate 31. The fusion head 32 has a through vertebral cavity. The heating element 33 is arranged on the end plate 31. The heating element 33 can be sleeved on the fusion head 32. The translation drive mechanism 2 can drive the core needle seat 4 to drive the core needle 5 to approach the mold base 3. The core needle 5 enters the vertebral cavity with the tube sleeved on the core needle 5. The vertebral cavity is conducive to forming a cone at the outer wall end of the tube on the core needle 5. Under the action of the heating element 33, the tube body and the reinforcing core are integrated into a pointed cone shape.

[0067] In one possible embodiment, Figure 1 and Figure 2As shown, the drainage catheter melting head forming device includes a driving member 7, a first gear 8 and a second gear 9. The melting head 32 is rotatably arranged on the end plate 31, and the first gear 8 is connected to the melting head 32. The second gear 9 is rotatably connected to the end plate 31, and the second gear 9 is meshed with the first gear 8. The driving member 7 is arranged on the end plate 31, and the driving member 7 is connected to the second gear 9. The driving member 7 can drive the second gear 9 to rotate and drive the first gear 8 to rotate, and then drive the melting head 32 to rotate. The rotation of the melting head 32 makes the end of the tube body sleeved on the core needle 5 evenly heated, and the quality of the molded product is good.

[0068] In one possible embodiment, Figure 1 and Figure 2 As shown, the translation drive mechanism 2 includes a main body 21, a motor 22 and a lead screw. The motor 22 is disposed at one end of the main body 21, and the lead screw is rotatably disposed on the main body 21. The core needle seat 4 is threadedly connected to the lead screw, and the core needle seat 4 is slidably connected to the main body 21. The motor 22 and the lead screw are transmission-connected to drive the lead screw to rotate, so as to drive the core needle seat 4 to translate along the main body 21. The main seat body 41 of the core needle seat 4 is threadedly connected to the lead screw, and the lead screw is disposed inside the main body 21. The translation drive mechanism 2 may also include a reducer 23 and a coupling 24, the input end of the reducer 23 is connected to the motor 22, the output end of the reducer 23 is connected to the coupling 24, and the coupling 24 is connected to the lead screw. The operation of the motor 22 drives the reducer 23, the coupling 24, and the lead screw to move in sequence, thereby causing the core needle seat 4 connected to the lead screw to move along the length direction of the lead screw, so as to drive the core needle seat 4 to drive the core needle 5 to approach or move away from the mold seat 3.

[0069] In the drainage catheter melting process, because the wall of the catheter is thin and soft, the axial support force of the entire catheter is also small, and the heat of the mold is transferred to the catheter and transferred outward along the catheter, so that the catheter in the conical cavity softens. In this process, because the axial support force of the catheter is weak, the axial support force is further reduced after the catheter softens. Therefore, when pressure is applied to push the catheter into the mold seat 3, although the catheter can be slowly formed, the drainage catheter will be formed in the exposed part of the mold, and the reinforcing core is wrapped inside. If the temperature is not raised in time, the reinforcing core will not be formed, and the reinforcing core cannot be hot-melted, the catheter will be wrinkled, and the reinforcing core will move. In view of the above situation, when using the drainage catheter melting forming device of the present application to perform the drainage catheter melting forming operation, the reinforcing core can be preheated first, and then the catheter and the reinforcing core are inserted in sequence, and then the catheter is sent into the mold seat 3 for hot-melt forming, and it will automatically exit and reset after completion. Preheat the reinforcing core and balance the temperature of the catheter and the reinforcing core during operation so that the catheter and the reinforcing core can be quickly integrated into one, with a good hot melt effect, avoiding the situations of the reinforcing core being unformed, catheter wrinkles, and the reinforcing core moving.

[0070] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details in detail, nor do they limit the present application to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A drainage catheter melting head forming device, characterized in that: include: Base; A translation driving mechanism, wherein the translation driving mechanism is arranged on the base; A mold seat, the mold seat is arranged on the base, and the mold seat is located at one end of the translation driving mechanism along the translation direction; A core needle seat, the core needle seat is drivingly connected to the translation drive mechanism; A core needle, the core needle having a thick diameter body and a thin diameter body, the thick diameter body is connected to the core needle seat, the thin diameter body is connected to one end of the thick diameter body, and a reinforcing core limit platform is formed between the thick diameter body and the thin diameter body; The translation driving mechanism can drive the core needle seat to drive the core needle to approach or move away from the mold seat.

2. The drainage catheter melting head forming device according to claim 1, characterized in that: A cone section is provided at one end of the thick-diameter body close to the thin-diameter body; In the direction from the thin-diameter body to the thick-diameter body, the outer diameter of the cone section gradually increases.

3. The drainage catheter melting head forming device according to claim 1, characterized in that: The core needle seat comprises a main seat body, a buffer seat and an elastic support seat; The main seat body is transmission-connected to the translation drive mechanism; The buffer seat is slidably disposed on the main seat body, the elastic support seat is disposed on the main seat body, the elastic support seat is located on a side of the buffer seat away from the mold seat, and the elastic support seat elastically abuts against the buffer seat; The thick-diameter body of the core needle is fixed on the buffer seat.

4. The drainage catheter melting head forming device according to claim 3, characterized in that: A guide rail is arranged on the main seat body, and the guide rail extends along the translation direction of the translation mechanism; A sliding block is arranged on the buffer seat; The slider is slidably connected to the guide rail.

5. The drainage catheter melting head forming device according to claim 3, characterized in that: The elastic support seat comprises a seat frame and an elastic component; The seat frame is fixed to one end of the main seat body away from the mold seat; Two ends of the elastic component respectively abut against the seat frame and the buffer seat.

6. The drainage catheter melting head forming device according to claim 5, characterized in that: The buffer seat has a receiving groove; The elastic support seat includes a guide member, the guide member is fixed to the seat frame, and the guide member extends into the receiving groove; The elastic component is sleeved on the guide member; One end of the elastic component abuts against the guide member, and the other end of the elastic component is accommodated in the accommodation groove and abuts against the buffer seat.

7. The drainage catheter melting head forming device according to claim 3, characterized in that: Including fixing components; The fixing assembly is arranged at one end of the main seat body close to the mold seat; The fixing assembly has a clamp, and the clamp is used to clamp or release the core needle and the tube body sleeved on the core needle.

8. The drainage catheter melting head forming device according to claim 1, characterized in that: The mold base has an end plate, a melting head and a heating element; The end plate is fixed on the base; The fusion head is arranged on the end plate, and the fusion head has a through vertebral cavity; The heating element is arranged on the end plate, and the heating element can be sleeved on the melting head element.

9. The drainage catheter melting head forming device according to claim 8, characterized in that: It includes a driving member, a first gear and a second gear; The fusion head is rotatably arranged on the end plate, and the first gear is connected to the fusion head; The second gear is rotatably connected to the end plate, and the second gear is meshed with the first gear; The driving member is disposed on the end plate, and the driving member is connected to the second gear.

10. The drainage catheter melting head forming device according to any one of claims 1 to 9, characterized in that: The translation drive mechanism comprises a main body, a motor and a lead screw; The motor is arranged at one end of the main body, and the lead screw is rotatably arranged at the main body; The core needle seat is threadedly connected to the lead screw, and the core needle seat is slidably connected to the main body; The motor is connected to the lead screw in a transmission manner to drive the lead screw to rotate, so as to drive the core needle seat to translate along the main body.

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