CN217097955U - Medical catheter precision cutting device - Google Patents
Medical catheter precision cutting device Download PDFInfo
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- CN217097955U CN217097955U CN202220727089.1U CN202220727089U CN217097955U CN 217097955 U CN217097955 U CN 217097955U CN 202220727089 U CN202220727089 U CN 202220727089U CN 217097955 U CN217097955 U CN 217097955U
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Abstract
The utility model relates to a medical catheter precision cutting device, which comprises a base, a blade frame, a blade feeding mechanism and a rotating shaft, wherein the rotating shaft is rotatably arranged on the base, one end of the rotating shaft is provided with a sleeve shaft coaxial with the rotating shaft, the outer diameter of the sleeve shaft is matched with the inner diameter of a medical catheter so as to be used for sleeve joint of the position to be cut of the medical catheter, the other end of the rotating shaft is provided with a driving piece, and the driving piece is used for driving the rotating shaft to rotate; the blade frame is arranged on the base, the blade frame is provided with a blade feeding groove, the blade is movably arranged in the blade feeding groove, the blade feeding mechanism is used for feeding the blade to be abutted against the position to be cut of the medical catheter, and the rotating shaft is driven to rotate so as to perform circular cutting on the position to be cut of the medical catheter. The utility model discloses utilize and cup joint the fixed medical pipe of axle cup joint, warp when preventing medical pipe cutting to rotate through the rotation axis and carry out the circular cutting with the position of waiting to cut to medical pipe, the roughness of the medical pipe terminal surface that obtains after the cutting is high.
Description
Technical Field
The utility model belongs to the technical field of medical catheter processing apparatus, concretely relates to medical catheter precision cutting device.
Background
For the cutting processing of medical catheters, in particular for medical catheters used by medical sensors, the requirements on the flatness of the end face of the catheter are strict due to the high precision requirement of the assembly.
In the prior art, for example: a manual pipe cutting tool for quick cutting disclosed in patent document with publication number CN206690183U and a catheter rotary cutting device disclosed in patent document with publication number CN 214323459U; however, the medical catheter is generally made of thermoplastic materials such as TPU, which is soft, and the end face of the medical catheter is easily deformed if the medical catheter is directly pressed and cut by a blade.
SUMMERY OF THE UTILITY MODEL
Based on the above disadvantages and shortcomings existing in the prior art, the present invention provides a medical catheter precision cutting device.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
a precise cutting device for a medical catheter comprises a base, a blade frame, a blade feeding mechanism and a rotating shaft, wherein the rotating shaft is rotatably arranged on the base;
the blade frame is arranged on the base, the blade frame is provided with a blade feeding groove, the blade is movably arranged in the blade feeding groove, the blade feeding mechanism is used for feeding the blade to be abutted against the position to be cut of the medical catheter, and the rotating shaft is driven to rotate so as to perform circular cutting on the position to be cut of the medical catheter.
Preferably, the sleeve shaft is of a stepped shaft structure.
Preferably, the rotating shaft is movably fitted to the base along an axial direction thereof, the rotating shaft has a plurality of slots distributed at intervals along the axial direction thereof, and an axial limiting member is detachably engaged with the corresponding slot to limit the axial movement of the rotating shaft.
As a preferred scheme, the axial limiting piece comprises a handheld part and two extended fork arms, and the fork positions of the two fork arms form a clamping position in clamping fit with the clamping groove; the base is provided with jacks which correspond to the branch arms one to one and are matched with the branch arms in an inserting mode.
Preferably, the blade feeding mechanism comprises a rubber head bolt, an elastic part and a limit nut, the blade holder is provided with an elastic part mounting groove, the elastic part is sleeved outside the rubber head bolt, one end of the elastic part abuts against the outer side of the elastic part mounting groove, the other end of the elastic part abuts against the limit nut so as to enable the limit nut to abut against the inner side of the elastic part mounting groove, and the rubber head bolt is in threaded connection with the limit nut and is connected with the blade; and pulling the rubber head bolt to link the blades.
Preferably, the surface of the blade holder is provided with an avoiding groove for avoiding the medical catheter.
Preferably, the plane of the blade is perpendicular to the axial direction of the sleeve shaft.
As a preferred scheme, the angle of the blade edge is 1-5 degrees, and the surface of the blade edge is provided with a wear-resistant layer.
Preferably, the driving member is a crank or a motor.
Preferably, the rotating shaft is mounted on the base through a combination of a bearing and a bearing seat.
Compared with the prior art, the utility model, beneficial effect is:
(1) the utility model fixes the medical catheter by using the sleeve joint shaft to prevent the medical catheter from deforming during cutting, and performs circular cutting on the position to be cut of the medical catheter by rotating the rotating shaft, and the flatness of the end surface of the medical catheter obtained after cutting is high;
(2) the sleeve shaft is designed into a stepped shaft structure, is matched with the axial movement of the rotating shaft and can be suitable for cutting medical catheters with different inner diameters;
(3) the forked structure design of the axial limiting piece is convenient for limiting and adjusting the axial movement of the rotating shaft;
(4) the rubber head bolt is pulled to be linked with the blade, so that the blade can reset after cutting, the rubber head bolt is loosened, and the cutting piece moves to a position to be cut tightly attached to the medical catheter under the reset action of the elastic piece;
(5) the avoiding groove on the surface of the blade frame is designed, so that the whole structure is more compact.
Drawings
Fig. 1 is a schematic structural view of a medical catheter precision cutting device according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of another view angle of the medical catheter precision cutting device according to embodiment 1 of the present invention;
fig. 3 is a schematic top view of a precise cutting device for medical catheters according to embodiment 1 of the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a cross-sectional view of section C-C of FIG. 3;
FIG. 6 is an enlarged view of section E of FIG. 5;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 3;
FIG. 8 is a sectional view taken along section F-F of FIG. 3;
fig. 9 is a schematic structural view of a medical catheter precision cutting device according to embodiment 2 of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
Example 1:
as shown in fig. 1 to 8, the precise cutting device for medical catheters of the present embodiment includes a base 1, a blade holder 2, a blade 3, a blade feeding mechanism, a rotating shaft 4, and a hand crank 5.
The base 1 is a flat cuboid structure and serves as a bearing platform of the whole device.
The axial of the rotation axis 4 of this embodiment is parallel with base 1's length direction, the combination I of rotation axis 4 through first bearing frame and bearing, the combination II rotation of second bearing frame and bearing is installed on base 1, the left end of rotation axis 4 is connected with the axle 6 that cup joints with the rotation axis 4 is coaxial, the external diameter that cup joints axle 6 and the internal diameter adaptation of medical pipe 0, cup joint the position with waiting to cut for medical pipe and cup joint, crank 5 is connected to the right-hand member of rotation axis 4, crank 5 is used for driving rotation axis 4 and rotates.
The blade holder 2 of the present embodiment is mounted on the base 1, and the blade holder 2 is located at the left end of the rotating shaft 4; the blade frame 2 is provided with a blade feeding groove 20, the blade 3 is movably arranged in the blade feeding groove 20, the blade feeding mechanism is used for feeding the blade 3 to be abutted with the position to be cut of the medical catheter 0, and when the rotating shaft 4 is driven to rotate, the position to be cut of the medical catheter 0 can be circularly cut.
The sleeve shaft 6 of the present embodiment is a stepped shaft structure, and is suitable for sleeve connection of medical catheters with different inner diameters, so as to perform cutting operation on the medical catheters with different inner diameters. Accordingly, the rotary shaft 4 is movably fitted to the base 1 in the axial direction thereof so as to adjust the target cutting position of the medical catheters of different inner diameters.
Specifically, the rotating shaft 4 has a plurality of slots 40 spaced along the axial direction thereof, and the axial limiting member 7 is detachably engaged with the corresponding slots to limit the axial movement of the rotating shaft 4. The axial limiting piece 7 comprises a handheld portion 7a and two branch arms 7b extending from the handheld portion, and the branch positions of the two branch arms form a clamping position in clamping fit with the clamping groove; in addition, the base 1 has insertion holes 1b which correspond to the branch arms 7b one by one and are in insertion fit.
The blade feeding mechanism of the embodiment comprises a rubber head bolt 8, an elastic piece 9 and a limit nut 10, wherein the blade holder 2 is provided with an elastic piece mounting groove 21, the elastic piece 9 is sleeved outside the rubber head bolt 8, one end of the elastic piece 9 abuts against the outer side of the elastic piece mounting groove 21, the other end of the elastic piece 9 abuts against the limit nut 10, so that the limit nut 10 abuts against the inner side of the elastic piece mounting groove 21, and the rubber head bolt 8 is in threaded connection with the limit nut 10 and is connected with the blade 3; the blade 3 can be linked by pulling the rubber head bolt 8; the rubber head bolt 8 is loosened, and the blade 3 can be reset.
The plane where the blade 3 is located is perpendicular to the axial direction of the sleeve shaft 6, the angle of the blade edge is 1-5 degrees, the surface of the blade edge is provided with a wear-resistant layer, the blade matrix is made of 0Cr18Ni9 stainless steel, and the wear-resistant layer on the surface of the blade edge is a plated SiC or TiN coating.
The material of the inner diameter part of the medical catheter sleeved by the sleeve shaft 6 in the embodiment is 0Cr18Ni9 stainless steel or TC4 titanium alloy, and the length part of the sleeve shaft is not more than 10 mm.
The surface of the blade holder 2 of the present embodiment is provided with an avoidance groove 22 for avoiding the medical catheter, for supporting the medical catheter, and for making the entire structure more compact.
The medical catheter cut by the medical catheter precision cutting device is preferably 0.1-5 mm in outer diameter and not more than 3.5mm in wall thickness.
The medical catheter precision cutting device has the advantages of simple structure, small size, easiness in operation, low cost and the like, and is particularly suitable for cutting medical tiny catheters.
The operation flow of the medical catheter precision cutting device of the embodiment is as follows:
and pulling the rubber head bolt outwards to sleeve the medical catheter to be cut into the sleeve shaft, loosening the rubber head bolt to enable the blade to be tightly attached to the outer wall of the medical catheter, rotating the hand crank to perform precise circular cutting on the medical catheter, taking down the cut medical catheter and finishing cutting.
Example 2:
the precision cutting device for medical catheters of the present embodiment is different from embodiment 1 in that:
as shown in fig. 9, the axial limiting member and the related structural design thereof are omitted, and accordingly, the sleeve shaft may have an equal-diameter shaft structure, so as to be suitable for cutting the medical catheter 0 with a single inner diameter, and meet the requirements of different applications;
other structures can refer to embodiment 1.
Example 3:
the precision cutting device for medical catheters of the present embodiment is different from embodiment 1 in that:
the blade feeding mechanism can also adopt the existing commonly used feeding mechanism to meet the requirements of different applications;
other structures can refer to embodiment 1.
Example 4:
the precision cutting device for medical catheters of the present embodiment is different from embodiment 1 in that:
the hand crank can be replaced by a motor or other existing common driving parts to realize intelligent driving;
other structures can refer to embodiment 1.
Example 5:
the precision cutting device for medical catheters of the present embodiment is different from embodiment 1 in that:
the design of an avoiding groove on the surface of the blade holder can be omitted, and the requirements of different applications are met;
other structures can refer to embodiment 1.
The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (10)
1. A precise cutting device for a medical catheter is characterized by comprising a base, a blade frame, a blade feeding mechanism and a rotating shaft, wherein the rotating shaft is rotatably arranged on the base;
the blade frame is arranged on the base, the blade frame is provided with a blade feeding groove, the blade is movably arranged in the blade feeding groove, the blade feeding mechanism is used for feeding the blade to be abutted against the position to be cut of the medical catheter, and the rotating shaft is driven to rotate so as to perform circular cutting on the position to be cut of the medical catheter.
2. The precise cutting device for medical catheters according to claim 1, characterized in that the said sleeve shaft is a stepped shaft structure.
3. The precise cutting device for medical catheter according to claim 2, wherein the rotating shaft is movably engaged with the base along an axial direction thereof, the rotating shaft has a plurality of engaging slots spaced along the axial direction thereof, and an axial stopper is detachably engaged with the corresponding engaging slots to limit the axial movement of the rotating shaft.
4. The precise cutting device for the medical catheter according to claim 3, wherein the axial limiting member comprises a hand-held part and two branch arms extending from the hand-held part, and the branch positions of the two branch arms form clamping positions matched with the clamping grooves in a clamping manner; the base is provided with jacks which correspond to the branch arms one to one and are matched with the branch arms in an inserting mode.
5. The precise cutting device for the medical catheter as claimed in any one of claims 1 to 4, wherein the blade feeding mechanism comprises a rubber head bolt, an elastic member and a limit nut, the blade holder is provided with an elastic member installation groove, the elastic member is sleeved outside the rubber head bolt, one end of the elastic member abuts against the outer side of the elastic member installation groove, the other end of the elastic member abuts against the limit nut to abut against the inner side of the elastic member installation groove, and the rubber head bolt is in threaded connection with the limit nut and is connected with the blade; and pulling the rubber head bolt to link the blades.
6. The precision cutting device for medical catheters according to any one of claims 1 to 4, wherein the surface of the blade holder has an avoiding groove for avoiding the medical catheter.
7. The precise cutting device for medical catheters according to any one of claims 1-4, wherein the plane of the blade is perpendicular to the axial direction of the sleeve shaft.
8. The precise cutting device for medical catheters as claimed in any one of claims 1 to 4, wherein the angle of the cutting edge of the blade is 1-5 ° and the surface of the cutting edge of the blade has a wear resistant layer.
9. The precise cutting device for medical catheters as claimed in any one of claims 1 to 4, wherein the driving member is a crank or a motor.
10. The precise cutting device for medical catheters according to any one of claims 1 to 4, wherein the rotating shaft is mounted on the base by a combination of a bearing and a bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220727089.1U CN217097955U (en) | 2022-03-30 | 2022-03-30 | Medical catheter precision cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220727089.1U CN217097955U (en) | 2022-03-30 | 2022-03-30 | Medical catheter precision cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217097955U true CN217097955U (en) | 2022-08-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220727089.1U Active CN217097955U (en) | 2022-03-30 | 2022-03-30 | Medical catheter precision cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217097955U (en) |
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2022
- 2022-03-30 CN CN202220727089.1U patent/CN217097955U/en active Active
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