CN219947256U - Spiral catheter winding mechanism - Google Patents
Spiral catheter winding mechanism Download PDFInfo
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- CN219947256U CN219947256U CN202321353693.3U CN202321353693U CN219947256U CN 219947256 U CN219947256 U CN 219947256U CN 202321353693 U CN202321353693 U CN 202321353693U CN 219947256 U CN219947256 U CN 219947256U
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- main shaft
- large gear
- spiral
- driving
- winding mechanism
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- 238000004804 winding Methods 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000011295 pitch Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model provides a spiral catheter winding mechanism, and aims to solve the technical problem that the pitch of part of spiral catheters is uneven when the medical spiral catheters are produced in the prior art. The mechanism comprises: the cylindrical surface of the shaft is provided with a spiral guide groove, two ends of the guide groove are respectively positioned at two ends of the main shaft, the middle part of the main shaft is provided with a threaded through hole coaxially arranged with the main shaft, and the main shaft is also provided with a driving hole parallel to the threaded through hole; the screw rod is matched with the threaded through hole on the main shaft, and the length of the screw rod is more than or equal to two times of the length of the main shaft; the two support ends of the support frame are fixedly connected with the two ends of the screw respectively; a side surface of the large gear is rotatably arranged on one supporting end of the supporting frame; one end of the driving rod is fixedly arranged on one side surface of the large gear, which is away from the supporting end, and the driving rod is arranged in the driving hole in a sliding manner; and a small gear is arranged on an output shaft of the motor and meshed with the large gear. The mechanism has the advantage of ensuring equal screw pitches of the medical spiral catheters in the same batch.
Description
Technical Field
The utility model relates to equipment for preparing a medical spiral catheter, in particular to a spiral catheter winding mechanism.
Background
Medical spiral catheters are commonly used for imaging or injecting microparticles, and are mainly used as small catheters for supporting guidewires in performing coronary procedures.
At present, when the medical spiral catheter is produced, the medical catheter is wound on an optical axis, and the spiral catheter is wound by rotating the optical axis and moving the position of the catheter.
When a medical spiral catheter is produced in the prior art, the phenomenon that the pitch of part of the spiral catheter is uneven is caused by the speed of moving the catheter.
Disclosure of Invention
Aiming at the technical problem that the screw pitches of partial screw catheters are not equal when the medical screw catheters are produced in the prior art, the utility model provides a screw catheter winding mechanism which has the advantage of ensuring that the screw pitches of the medical screw catheters produced in the same batch are equal.
The technical scheme of the utility model is as follows:
a spiral catheter winding mechanism comprising:
the cylindrical surface of the main shaft is provided with a spiral guide groove, the section of the guide groove is semicircular, two ends of the guide groove are respectively positioned at two ends of the main shaft, the middle part of the main shaft is provided with a threaded through hole coaxially arranged with the main shaft, and a driving hole is also arranged on the main shaft in parallel with the threaded through hole;
the screw rod is matched with the threaded through hole on the main shaft, and the length of the screw rod is more than or equal to two times of the length of the main shaft;
the support frame is provided with two support ends which are fixedly connected with the two ends of the screw rod respectively;
the large gear is in an annular structure, and one side surface of the large gear is rotatably arranged at one supporting end of the supporting frame;
one end of the driving rod is fixedly arranged on one side surface of the large gear, which is away from the supporting end, and the driving rod is slidably arranged in the driving hole;
the motor is provided with a pinion on an output shaft, and the pinion is meshed with the large gear;
the screw rod passes through the middle part of the large gear, and the axis of the screw rod is collinear with the axis of the large gear.
Optionally, two buckles are arranged on the main shaft and are respectively positioned at two ends of the guide groove;
the inner side surface of the buckle is semicircular.
Optionally, a heating coil is arranged in the main shaft, annular conductive sheets are arranged at two ends of the main shaft, and the two conductive sheets are electrically connected with two electrodes of the power supply.
Optionally, the method further comprises:
the guide rail is arranged on the support frame and is parallel to the main shaft;
the two ends of the sliding plate are tilted, two metal sheets are respectively arranged at the two ends of the sliding plate and respectively contacted with the conductive sheets at the two ends of the main shaft, and the sliding plate is arranged on the guide rail in a sliding manner;
the two electrodes of the power supply are respectively and electrically connected with the metal sheets at the two ends of the sliding plate.
Optionally, a side surface of the large gear, which faces away from the driving rod, is provided with an annular sliding rail;
and at least three support rods matched with the slide rails are arranged at the support end of the support frame.
Optionally, the cross section of slide rail is "omega" shape, the tip of bracing piece has the breach rather than cooperating.
Optionally, two driving rods are arranged on the large gear in parallel, and two driving holes are formed in the main shaft and matched with the two driving rods.
Optionally, a connecting disc is arranged at one end of the driving rod, which is far away from the large gear, and the connecting disc is slidably arranged at one supporting end of the supporting frame, which is far away from the large gear.
Compared with the prior art, the utility model has the beneficial effects that:
a main shaft is arranged, and then a spiral guide groove is arranged on the main shaft, so that when the spiral guide pipe is wound, the guide pipe can be embedded into the guide groove, and the spiral guide pipe is wound according to the shape of the guide groove. Since the guide grooves on the main shaft are in a regular spiral shape and the pitch is uniform, the pitch of the spiral duct wound around the main shaft is also uniform.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the present utility model;
FIG. 2 is a schematic perspective view of the first embodiment of the present utility model;
fig. 3 is a schematic perspective view of a second embodiment of the present utility model.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships conventionally placed in use of the product of the present utility model, or orientations or positional relationships conventionally understood by those skilled in the art, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Examples:
referring to fig. 1 to 3, a spiral duct winding mechanism includes a main shaft 1, a screw 2, a support frame 3, a large gear 4, a driving rod 5, a motor 6, and a pinion 7. Specifically, the support frame 3 is integrally U-shaped, the bottom of the support frame is a flat bottom plate 31, and two ends of the support frame are vertically arranged support ends 32. A screw 2 is fixedly arranged between the two support ends 32 of the support frame 3.
The middle part of the main shaft 1 is provided with a threaded through hole penetrating through two ends of the main shaft, and the screw rod 2 is matched in the threaded through hole of the main shaft 1. The axis of the spindle 1 is collinear with the axis of the threaded through hole, the spindle 1 can rotate on the screw 2, the spindle 1 can move along with the length direction of the screw 2 in the rotating process, and the moving direction of the spindle 1 on the screw 2 is changed by changing the rotating direction of the spindle 1.
The cylindrical surface of the main shaft 1 is provided with a guide groove 11, and the guide groove 11 is spirally wound on the main shaft 1. And the cross section of the guide groove 11 is semicircular, and the radius of the semicircular structure of the cross section of the guide groove 11 is equal to the radius of the medical catheter.
In addition, the main shaft 1 is also provided with a driving hole, the driving hole also penetrates through two ends of the main shaft 1, the section of the driving hole is circular, the axis of the driving hole is parallel to the axis of the threaded through hole, and the distance between the driving hole and the threaded through hole is larger than the sum of the radius of the driving hole and the radius of the threaded through hole.
The driving rod 5 is slidably disposed in the driving hole, and one end of the driving rod 5 is fixedly disposed on one side surface of the large gear 4. The large gear 4 is of an annular structure, teeth are arranged on the outer ring of the large gear 4, and one side surface of the large gear 4 far away from the driving rod 5 is rotatably connected to one supporting end 32 of the supporting frame 3. The screw 2 passes through the middle of the large gear 4, and the axis of the large gear 4 is collinear with the axis of the threaded through hole, and likewise, the axis of the main shaft 1.
The motor 6 is fixedly arranged on the bottom plate 31 of the supporting frame 3, the pinion 7 is coaxially arranged on the output shaft of the motor 6, the pinion 7 is meshed with the large gear 4, and the gear ratio of the pinion 7 to the large gear 4 is 1:3.
preferably, two buckles 12 are arranged on the main shaft 1 and are respectively positioned at two ends of the guide groove 11, the inner side surfaces of the buckles 12 are semicircular, and the buckles are combined with the semicircular structure of the section of the guide groove 11 to form a complete circular structure. When the end of the medical catheter is placed on the end of the guide groove 11, the medical catheter can be fixed to the end of the guide groove 11 by the snap 12.
In the present embodiment, the spiral guide groove 11 is provided on the main shaft 1 so that the guide pipe can be inserted into the guide groove 11 when the spiral guide pipe is wound, and the spiral guide pipe is wound according to the shape of the guide groove 11. Since the guide grooves 11 on the main shaft 1 are formed in a regular spiral shape and the pitch is uniform, the pitch of the spiral duct wound around the main shaft 1 is also uniform.
The working principle of this embodiment is that the motor 6 drives the large gear 4 to rotate through the small gear 7, so that the driving rod 5 rotates around the axis of the spindle 1, and the spindle 1 rotates on the screw 2. Because the driving rod 5 is in sliding connection with the driving hole, the main shaft 1 moves on the screw rod 2 at the same time in the process that the main shaft 1 rotates on the screw rod 2 under the cooperation of the threaded through hole and the screw rod 2.
When the end of the medical catheter is fixed at the end of the guide groove 11 through the buckle 12, the medical catheter can be automatically wound in the guide groove 11 of the main shaft 1 due to the rotation and the movement of the main shaft 1, so that the spiral catheter is wound.
In one particular embodiment:
the inside of main shaft 1 is provided with heating coil, and the both ends of main shaft 1 have an annular conducting strip 8 respectively, and the axis of conducting strip 8 and the axis collineation of main shaft 1. Two ends of the heating coil are respectively and electrically connected with the two conducting strips 8.
The winding mechanism further comprises a guide rail 9, a slide plate 10 and a metal sheet. Both ends of the sliding plate 10 are tilted towards the same direction respectively, and a metal sheet is arranged on the inner sides of both tilted end parts of the sliding plate 10 respectively and is electrically connected with two electrodes of the power supply respectively.
And, the two ends of the slider 10 tilted are respectively in sliding contact with the conductive sheets 8, so that the two metal sheets are in one-to-one sliding contact with the two conductive sheets 8.
The guide rail 9 is fixedly arranged on the bottom plate 31 of the support frame 3, and the top of the guide rail 9 is in sliding connection with the bottom of the slide plate 10. So that the slide 10 can move together with the spindle 1 during its movement on the screw 2, so that the metal sheet can be in continuous sliding contact with the conductive sheet 8.
In this embodiment, the heating coil is disposed in the main shaft 1, so that the medical catheter can be heated and softened in the winding process, and can be shaped quickly.
In another specific embodiment:
an annular slide rail 13 is arranged on a side facing away from the drive rod 5, and at least three support rods 14 which are matched with the slide rail 13 are arranged on the support end 32 of the support frame 3. The cross section of the sliding rail 13 is omega-shaped, and the end part of the supporting rod 14 is provided with a notch matched with the sliding rail.
Two driving rods 5 are arranged on the large gear 4, two driving holes are arranged on the corresponding main shaft 1 in parallel, and the two driving rods 5 are respectively arranged in the two driving holes in a one-to-one corresponding sliding mode.
One end of the driving rod 5 far away from the large gear 4 is provided with a connecting disc 15, the connecting disc 15 and the large gear 4 are respectively and rotatably arranged on two supporting ends 32 of the supporting frame 3, and the connecting disc 15 is rotatably connected with the supporting ends 32 through the sliding rail 13 and the supporting rod 14.
In this embodiment, by adding the driving rod 5, both sides of the spindle 1 can be uniformly stressed, and meanwhile, the connecting disc 15 and the large gear 4 are respectively arranged at both ends of the driving rod 5, so that the shaking phenomenon of the end part is avoided in the process of rotating the driving rod 5.
The foregoing examples merely illustrate specific embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (8)
1. A spiral conduit winding mechanism, comprising:
the cylindrical surface of the main shaft is provided with a spiral guide groove, the section of the guide groove is semicircular, two ends of the guide groove are respectively positioned at two ends of the main shaft, the middle part of the main shaft is provided with a threaded through hole coaxially arranged with the main shaft, and a driving hole is also arranged on the main shaft in parallel with the threaded through hole;
the screw rod is matched with the threaded through hole on the main shaft, and the length of the screw rod is more than or equal to two times of the length of the main shaft;
the support frame is provided with two support ends which are fixedly connected with the two ends of the screw rod respectively;
the large gear is in an annular structure, and one side surface of the large gear is rotatably arranged at one supporting end of the supporting frame;
one end of the driving rod is fixedly arranged on one side surface of the large gear, which is away from the supporting end, and the driving rod is slidably arranged in the driving hole;
the motor is provided with a pinion on an output shaft, and the pinion is meshed with the large gear;
the screw rod passes through the middle part of the large gear, and the axis of the screw rod is collinear with the axis of the large gear.
2. The spiral duct winding mechanism of claim 1, wherein two buckles are arranged on the main shaft and are respectively positioned at two ends of the guide groove;
the inner side surface of the buckle is semicircular.
3. The spiral duct winding mechanism of claim 1, wherein a heating coil is provided in the main shaft, and two ends of the main shaft are provided with annular conductive sheets, and two of the conductive sheets are electrically connected with two electrodes of a power supply.
4. The spiral conduit winding mechanism of claim 3, further comprising:
the guide rail is arranged on the support frame and is parallel to the main shaft;
the two ends of the sliding plate are tilted, two metal sheets are respectively arranged at the two ends of the sliding plate and respectively contacted with the conductive sheets at the two ends of the main shaft, and the sliding plate is arranged on the guide rail in a sliding manner;
the two electrodes of the power supply are respectively and electrically connected with the metal sheets at the two ends of the sliding plate.
5. The spiral duct winding mechanism of claim 1, wherein a side of the large gear facing away from the drive rod is provided with an annular slide rail;
and at least three support rods matched with the slide rails are arranged at the support end of the support frame.
6. The spiral duct winding mechanism of claim 5, wherein the slide rail has an "Ω" shape in cross section, and the end of the support rod has a notch fitted thereto.
7. The spiral duct winding mechanism of claim 1, wherein two driving rods are arranged on the large gear in parallel, and two driving holes are arranged on the main shaft to be matched with the two driving rods.
8. The spiral duct winding mechanism of claim 1, wherein,
one end of the driving rod, which is far away from the large gear, is provided with a connecting disc, and the connecting disc is arranged on one supporting end of the supporting frame, which is far away from the large gear, in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321353693.3U CN219947256U (en) | 2023-05-31 | 2023-05-31 | Spiral catheter winding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321353693.3U CN219947256U (en) | 2023-05-31 | 2023-05-31 | Spiral catheter winding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219947256U true CN219947256U (en) | 2023-11-03 |
Family
ID=88539448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321353693.3U Active CN219947256U (en) | 2023-05-31 | 2023-05-31 | Spiral catheter winding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219947256U (en) |
-
2023
- 2023-05-31 CN CN202321353693.3U patent/CN219947256U/en active Active
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