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CN-121972830-A - Sheath tube head end forming device

CN121972830ACN 121972830 ACN121972830 ACN 121972830ACN-121972830-A

Abstract

The application discloses a sheath tube head end forming device which comprises a base plate, a first translation driving mechanism, a second translation plate, a second translation driving mechanism, a first limiting mechanism, an inflation unit, a second limiting mechanism, a rotation driving mechanism, a laser cutting unit, a first electric push rod, a first magnetic block, a second electric push rod and a second magnetic block, wherein the first translation plate is provided with a plurality of mounting positions, each mounting position is provided with a first strip-shaped slide rail and two end convex plates, and each mounting position is provided with a bearing part. The sheath tube head end forming device can realize automatic and batch production, thereby improving the production efficiency. The multi-step automatic processing such as inserting dabber, head end position location, head end shaping and burring can be realized to can effective shaping, and effective burring, and when handling, the sheath is supported by the dabber, and by accurate positioning.

Inventors

  • WANG CHAO
  • He Lingjia
  • JING JUNHONG
  • SHEN JUAN

Assignees

  • 海望医疗技术(苏州)有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (10)

  1. 1. A sheath tube head end forming device is characterized by comprising a base plate, a first translation driving mechanism, a second translation plate, a second translation driving mechanism, a first limiting mechanism, an air charging unit, a second limiting mechanism, a rotary driving mechanism, a laser cutting unit, a first electric push rod, a first magnetic block, a second electric push rod and a second magnetic block, wherein the first translation plate is provided with a plurality of mounting positions, each mounting position is provided with a first strip-shaped sliding rail and two end convex plates, each mounting position is provided with a bearing part, the bearing part comprises a first mounting sliding seat, a mounting sleeve connected with the first mounting sliding seat through a connecting bearing, an annular air bag mounted in the mounting sleeve, an air faucet connected with the annular air bag, a passive rotating ring, a counterweight plate and a third magnetic block fixed at the end of the first mounting sliding seat, springs are connected between each end convex plate and the first mounting sliding seat, the first limiting mechanism comprises two side limiting units, each side limiting unit comprises a first electric lifting rod, a third electric lifting rod and a third electric plate connected with the first electric lifting rod, a second electric lifting rod and a second lifting rod and a driving wheel, a driving wheel is inserted into a positioning seat and a positioning seat, and a driving wheel is inserted into a positioning seat and a positioning seat is arranged at the end of the mounting seat, and the driving seat is provided with a positioning seat, and a driving seat is provided with a driving mechanism, and a driving mechanism is inserted into the driving seat is provided with a driving seat and a driving mechanism, the hot air treatment unit comprises a hot air supply unit and an air outlet pipe connected with the hot air supply unit, wherein the air outlet pipe is provided with an inner cavity and an insertion groove which can enable the end of the sheath pipe to be inserted, and a plurality of air outlet holes are formed in the insertion groove.
  2. 2. The sheath tube head end molding device according to claim 1, wherein a shielding gas blowing pipe is further installed at the lifting seat, and the shielding gas outlet pipe is connected with a shielding gas supply unit.
  3. 3. The sheath tube head end forming device according to claim 1, wherein the hot air treatment unit further comprises a second bar-shaped sliding rail, two second installation sliding seats installed on the second bar-shaped sliding rail, a second fixing seat fixed on the second translation plate and a fifth electric push rod installed on the second fixing seat, wherein one second installation sliding seat is connected with the movable end of the fifth electric push rod, and the air outlet pipe is fixedly connected with the two second installation sliding seats.
  4. 4. The sheath tube head end forming device according to claim 1, further comprising a mandrel inserting mechanism, wherein the mandrel inserting mechanism comprises a translation seat, a third translation driving mechanism for driving the translation seat, a third fixing seat fixed on a substrate and a sixth electric push rod arranged on the third fixing seat, the translation seat is provided with a plurality of placing channels, a mandrel can be placed in each placing channel, the movable end of the sixth electric push rod can push the mandrel to be inserted into the end part of the sheath tube, and two ends of the mandrel are frustum-shaped.
  5. 5. The sheath tube head end forming device according to claim 1, wherein the open end of the positioning blind hole is provided with an arc chamfer, the closed end of the positioning blind hole is provided with a pressure sensor, the plurality of air outlet holes inserted into the groove are divided into a plurality of circles, and the air outlet holes of each circle are distributed in an annular equidistant manner.
  6. 6. The sheath tip shaping device of claim 4, wherein the number of placement channels at the translating tray is equal to the number of mounting locations at the first translating plate.
  7. 7. The sheath tube head end forming device according to claim 1, wherein the first mounting sliding seat comprises a strip-shaped seat and two protruding seats fixedly connected with the strip-shaped seat, mounting through holes are formed in the protruding seats, the connecting bearings are mounted at the mounting through holes, a magnet mounting groove is formed in the end portion of the first mounting sliding seat, and the third magnet is fixed to the magnet mounting groove.
  8. 8. The sheath tube head end forming device according to claim 1, wherein the second limiting mechanism comprises two third electric lifting rods, and the movable end of each third electric lifting rod is connected with an inverted-U-shaped pressing seat.
  9. 9. The sheath tube head end forming device according to claim 1, wherein the first translation mechanism comprises two first end plates, two first sliding rails, a first motor mounted on one of the first end plates, a first bearing mounted on the other first end plate, and a first screw rod connecting the first motor and the first bearing, the first translation plate has two first sliding grooves matched with the first sliding rails and a first threaded channel matched with the first screw rod, and the second translation mechanism comprises two second end plates, two second sliding rails, a second motor mounted on one of the second end plates, a second bearing mounted on the other second end plate, and a second screw rod connecting the second motor and the second bearing, and the second translation plate has two second sliding grooves matched with the second sliding rails and a second threaded channel matched with the second screw rod.
  10. 10. The sheath tube head end forming device according to claim 4, wherein the third translation mechanism comprises two third end plates, two third sliding rails, a third motor mounted on one of the third end plates, a third bearing mounted on the other of the third end plates, and a third screw rod connecting the third motor and the third bearing, and the translation seat has two third sliding grooves matched with the third sliding rails and a third threaded channel matched with the third screw rod.

Description

Sheath tube head end forming device Technical Field The invention relates to the technical field of sheath pipes, in particular to a sheath pipe head end forming device. Background Sheath is a common interventional medical device, and is generally made of a high polymer material into a tubular structure for establishing a channel in a minimally invasive surgery, and guiding devices such as a catheter, a guide wire, a stent and the like into a blood vessel or a cavity of a human body. The smoothness of the inner and outer surfaces of the sheath, the shape of the head end and the structural integrity have important effects on its insertion performance, patient safety and surgical efficacy. At present, the sheath tube is usually processed by adopting an extrusion molding process to obtain a tubular blank body, and then length cutting and head end molding are carried out according to requirements. The head end shaping is intended to shape the sheath leading end into a specific lead-in shape, such as a frustoconical shape or a structure with an arcuate chamfer, to reduce insertion resistance, avoid tissue damage, and improve the ability to pass through a stenosed site. However, the prior art generally faces the problem of burr control during the head end forming process. The current common molding process mainly comprises thermal shrinkage molding and cutting molding. In the heat shrinkage molding process, the head end is locally heated to shrink and shape, but tiny burrs (the length is usually more than 50 μm) are easily generated in the edge area due to uneven heating of the material and thermal stress concentration in the cooling process. In the cutting molding process, cutting shaping is directly carried out by adopting a cutting tool, but burr residues can be caused by abrasion of a cutting edge or improper cutting parameters. The presence of these burrs not only can damage the smoothness of the sheath surface and increase the risk of friction and tissue trauma during insertion, but also can shed into foreign bodies in the body during use, triggering thrombus or inflammatory reactions. Aiming at the removal of burrs, the existing method mainly comprises manual trimming and mechanical polishing. The manual removing mode depends on experience and hand feeling of operators, is extremely easy to scratch the surface of the head end, change shape or damage materials due to uneven force or direction deviation, while the mechanical removing method can improve efficiency, but is difficult to precisely control the magnitude and position of acting force, so that the structural integrity of the design of the head end is easily damaged due to excessive removal, and even the local thinning or shape distortion of the pipe wall is caused, so that the mechanical property and the use safety of the sheath pipe are affected. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides a sheath tube head end forming device. In order to achieve the above purpose, the invention provides a sheath tube head end forming device which comprises a base plate, a first translation driving mechanism, a second translation plate, a second translation driving mechanism, a first limiting mechanism, an inflating unit, a second limiting mechanism, a rotation driving mechanism, a laser cutting unit, a first electric push rod, a first magnetic block, a second electric push rod and a second magnetic block, wherein the first translation plate is provided with a plurality of mounting positions, each mounting position is provided with a first strip-shaped slide rail and two end convex plates, each mounting position is provided with a bearing part, each bearing part comprises a first mounting slide seat, a mounting sleeve connected with the first mounting slide seat through a connecting bearing, an annular air bag arranged in the mounting sleeve, an air tap connected with the annular air bag, a passive rotating ring, a counterweight plate and a third magnetic block fixed at the end of the first mounting slide seat, each end convex plate is connected with a spring, the first limiting mechanism comprises two side limiting units, each side limiting unit comprises a first electric lifting rod, a second electric lifting rod and a second lifting rod, a second lifting rod and a driving wheel unit comprises a fixing seat, a driving wheel, a lifting seat and a positioning seat, a driving wheel, a driving seat and a positioning seat, a positioning seat and a positioning seat are arranged on the driving seat are arranged on the fixing seat, and the driving seat is provided with a positioning seat, and the driving seat is capable of the driving seat is inserted by the driving seat and the driving seat is provided with a driving seat The hot air treatment unit comprises a hot air supply unit and an air outlet pipe connected with the hot air supply unit, wherein the air outlet pipe is provided with an inner cavity and an insertio