CN215129665U - Double-shaft structure of rotary cutter - Google Patents
Double-shaft structure of rotary cutter Download PDFInfo
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- CN215129665U CN215129665U CN202023347674.9U CN202023347674U CN215129665U CN 215129665 U CN215129665 U CN 215129665U CN 202023347674 U CN202023347674 U CN 202023347674U CN 215129665 U CN215129665 U CN 215129665U
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- rotary cutter
- shaft assembly
- main shaft
- handle
- twin
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Abstract
The utility model belongs to the technical field of medical instrument, especially, relate to a rotary cutter biax structure. The utility model discloses, to outer sleeve pipe do not have suitable mounted position among the prior art, often can only lug connection on the shell body of rotary cutter, inconvenient problem when having leaded to the use provides a rotary cutter biax structure, including rotary cutter arbor and fixed sleeve, the rotary cutter arbor is worn to locate in the fixed sleeve, rotary cutter arbor the inner links to each other with the main shaft subassembly that sets up in the handle, fixed sleeve inboard links to each other with the countershaft subassembly of fixing in the handle, countershaft subassembly overlaps in main shaft subassembly periphery, and is connected through connecting piece circumferential direction between countershaft subassembly and main shaft subassembly. The utility model discloses a but connect relative pivoted biax structure through the connecting piece, when main shaft assembly drive sword pipe pivoted, countershaft subassembly can remain static, provides mounting platform for the installation of overcoat structure.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to a rotary cutter biax structure.
Background
In the tumor resection operation, taking hysteromyoma as an example, after tumor resection, because the tumor volume is large and can not be directly taken out from the working channel established by the puncture outfit, the rotary cutter is needed to firstly smash the resected tumor in the body of a patient and then take out the tumor through the working channel. The rotary cutter is mainly provided with an annular naked cutter head at the position for realizing cutting, and the tumor is cut and smashed through the rotary cutter head. In order to realize some additional functions, the rotary cutter in the prior art is often sleeved with an outer sleeve structure outside the cutter tube, but the outer sleeve in the prior art is not provided with a proper mounting position and is often only directly connected to the outer shell of the rotary cutter, so that inconvenience in use is caused.
For example, the chinese utility model patent discloses a hysteromyoma rotary cutter [ application number: 201120405851.6], the utility model discloses a include frame, cutter arbor, seal the seat, characterized by: the frame on open and to have the draw-in groove, the one end of cutter arbor is provided with the tool bit, and the other end links to each other with the locked groove seat is fixed, open on the locked groove seat has the locking groove, the seal seals the end at the locked groove seat, the fixed blade holder that is provided with on the cutter arbor, the fixed bayonet lock that is provided with on the blade holder, the bayonet lock card is in the draw-in groove, the fixed pin that is provided with on the frame, the activity is provided with the handle on the fixed pin, the fixed pin passes through the torsional spring and links to each other with the handle, be provided with stop pin and spring in the handle, stop pin and locking groove phase-match.
The utility model discloses a have convenient to use, operation safety, the difficult advantage that drops of cutter arbor, but it still does not solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a peeler biax structure convenient to overcoat structural installation is in order to realize additional function.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the rotary cutter double-shaft structure comprises a rotary cutter bar and a fixed sleeve, wherein the rotary cutter bar is arranged in the fixed sleeve in a penetrating mode, the inner end of the rotary cutter bar is connected with a main shaft assembly arranged in a handle, the inner end of the fixed sleeve is connected with an auxiliary shaft assembly fixed in the handle, the auxiliary shaft assembly is sleeved on the periphery of the main shaft assembly and is connected with the main shaft assembly in a circumferential rotating mode through a connecting piece.
In the above dual-shaft structure of the rotary cutter, the connecting member is located between the main shaft assembly and the auxiliary shaft assembly, an inner surface of the connecting member is attached to an outer surface of the main shaft assembly, and an outer surface of the connecting member is attached to an inner surface of the auxiliary shaft assembly.
In the above-described rotary cutter biaxial structure, the connecting member includes a bearing or a self-lubricating slip ring.
In the above dual-shaft structure of the rotary cutter, the shaft axis of the auxiliary shaft assembly and the shaft axis of the main shaft assembly coincide with each other.
In the above dual-shaft structure of the rotary cutter, the auxiliary shaft assembly comprises the mounting pipe body and the positioning ring which are fixedly connected, the handle is provided with the positioning groove, the positioning ring is positioned in the positioning groove, and two sides of the positioning ring are both attached to the handle.
In the above dual-shaft structure of the rotary cutter, an installation groove is formed in one end of the installation pipe body, which is far away from the positioning ring, and the installation groove is recessed towards the inside of the installation pipe body along the axial lead direction of the installation pipe body.
In the above dual-shaft structure of the rotary cutter, a guide groove is arranged on one side of the mounting groove close to the end of the mounting pipe body, the guide groove is communicated with the mounting groove, and the width of the guide groove gradually increases from one end close to the mounting groove to one end far away from the mounting groove.
In the above dual-shaft structure of the rotary cutter, the guide groove is provided with a guide arc surface on the side surface.
In the above dual-shaft structure of the rotary cutter, the side surface of the mounting pipe body is protruded with a first shielding flange, and the first shielding flanges are connected end to form a ring shape.
In the above dual-shaft structure of the rotary cutter, a second shielding flange is further arranged in the handle, one end of the second shielding flange is fixedly connected with the inner surface of the handle, the other end of the second shielding flange extends towards the direction close to the mounting pipe body, and the side face of the second shielding flange close to one end of the mounting pipe body is attached to the side face of the first shielding flange.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a but connect relative pivoted biax structure through the connecting piece, when main shaft assembly drive sword pipe pivoted, countershaft subassembly can remain static, provides mounting platform for the installation of overcoat structure.
2. The utility model discloses simple structure, convenient assembling, convenient to use person operates and uses.
Drawings
Fig. 1 is a schematic view of the present invention mounted to a rotary cutter;
fig. 2 is a schematic structural diagram of the present invention;
in the figure: the device comprises a main shaft assembly 1, a secondary shaft assembly 2, a connecting piece 3, a mounting pipe body 21, a positioning ring 22, a positioning groove 23, a mounting groove 24, a guide groove 25, a guide arc surface 26, a first shielding flange 27, a second shielding flange 28, a handle 100 and a fixing sleeve 200.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, a dual-shaft structure of a rotary cutter includes a rotary cutter bar and a fixed sleeve 200, the rotary cutter bar is inserted into the fixed sleeve 200, an inner end of the rotary cutter bar is connected to a main shaft assembly 1 disposed in a handle 100, an inner end of the fixed sleeve 200 is connected to an auxiliary shaft assembly 2 fixed in the handle 100, the auxiliary shaft assembly 2 is sleeved on a periphery of the main shaft assembly 1, and the auxiliary shaft assembly 2 and the main shaft assembly 1 are connected by a connecting member 3 in a circumferential rotation manner.
The utility model discloses, during the use, a overcoat structure (not shown in the figure) for realizing additional function can be installed to countershaft subassembly 2 on to realize the indirect connection with the handle 100 shell body. The event the utility model discloses a but connect relative pivoted biax structure through connecting piece 3, in main shaft assembly 1 drive sword pipe pivoted, countershaft subassembly 2 can remain static, provides mounting platform for the installation of overcoat structure.
As shown in fig. 1, the connecting piece 3 is located between the main shaft assembly 1 and the auxiliary shaft assembly 2, the inner surface of the connecting piece 3 is attached to the outer surface of the main shaft assembly 1, and the outer surface of the connecting piece 3 is attached to the inner surface of the auxiliary shaft assembly 2. The connecting piece 3 can enable the main shaft assembly 1 and the auxiliary shaft assembly 2 to rotate relatively, namely the main shaft assembly 1 is selected while the auxiliary shaft assembly 2 is static, and provides a radial supporting force for the auxiliary shaft assembly 2. In particular, the connecting element 3 may be a bearing or a self-lubricating slip ring.
Preferably, the axial line of the auxiliary shaft assembly 2 and the axial line of the main shaft assembly 1 are coincident with each other. This ensures compactness and stability of the overall structure.
Referring to fig. 1 and 2, the auxiliary shaft assembly 2 includes a mounting tube 21 and a positioning ring 22, which are fixedly connected, the handle 100 is provided with a positioning groove 23, the positioning ring 22 is located in the positioning groove 23, and two sides of the positioning ring 22 are attached to the handle 100. The cooperation of the positioning ring 22 and the positioning groove 23 can provide a quick positioning and limiting function for the auxiliary shaft assembly 2 during the assembly process.
The outer sleeve is preferably detachably connected to the mounting tube 21 for assembly, cleaning and sterilization, for example, by a screw connection or a snap connection. Wherein, the connected mode of joint can adopt following mode to realize, the one end that holding ring 22 was kept away from to installation body 21 is equipped with mounting groove 24, mounting groove 24 is sunken to installation body 21 inside along the axial lead direction of installation body 21.
Preferably, a guide groove 25 is formed in one side of the mounting groove 24 close to the end of the mounting tube 21, the guide groove 25 is communicated with the mounting groove 24, and the width of the guide groove 25 gradually increases from one end close to the mounting groove 24 to one end far away from the mounting groove 24. The side surface of the guide groove 25 is provided with a guide arc surface 26. The connection structure that the overcoat structure is used for realizing the joint like this is convenient for slide to carrying out the joint with installation body 21 in mounting groove 24 through the guide effect of guide way 25 and direction cambered surface 26 and is connected.
As shown in fig. 1, a first shielding flange 27 protrudes from the side of the mounting tube 21, and the first shielding flange 27 is connected end to form a ring shape. The first shielding flange 27 can shield tissue fluid, blood or dust outside the handle 100 from entering the handle 100, thereby prolonging the service life of the atherectomy device.
Preferably, a second shielding flange 28 is further disposed in the handle 100, one end of the second shielding flange 28 is fixedly connected to the inner surface of the handle 100, the other end of the second shielding flange 28 extends toward the direction close to the mounting tube 21, and the side surface of the second shielding flange 28 close to one end of the mounting tube 21 is attached to the side surface of the first shielding flange 27. The first shielding flange 27 and the second shielding flange 28 cooperate with each other to completely close a gap that may exist between the countershaft assembly 2 and the handle 100, further ensuring the shielding effect.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the main shaft assembly 1, the auxiliary shaft assembly 2, the connecting member 3, the mounting tube 21, the positioning ring 22, the positioning groove 23, the mounting groove 24, the guide groove 25, the guide arc 26, the first shielding flange 27, the second shielding flange 28, the handle 100, the fixing sleeve 200, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The utility model provides a rotary cutter biax structure, includes rotary cutter arbor and fixed sleeve (200), the rotary cutter arbor is worn to locate in fixed sleeve (200), its characterized in that: the inner end of the rotary cutting knife bar is connected with a main shaft assembly (1) arranged in the handle (100), the inner end of the fixed sleeve (200) is connected with an auxiliary shaft assembly (2) fixed in the handle (100), the auxiliary shaft assembly (2) is sleeved on the periphery of the main shaft assembly (1), and the auxiliary shaft assembly (2) is connected with the main shaft assembly (1) in a circumferential rotating mode through a connecting piece (3).
2. A rotary cutter twin-shaft structure according to claim 1, wherein: the connecting piece (3) is positioned between the main shaft assembly (1) and the auxiliary shaft assembly (2), the inner surface of the connecting piece (3) is attached to the outer surface of the main shaft assembly (1), and the outer surface of the connecting piece (3) is attached to the inner surface of the auxiliary shaft assembly (2).
3. A rotary cutter twin-shaft structure according to claim 2, wherein: the connecting piece (3) comprises a bearing or a self-lubricating slip ring.
4. A rotary cutter twin-shaft structure according to claim 1, wherein: the axial lead of the auxiliary shaft assembly (2) is coincident with the axial lead of the main shaft assembly (1).
5. A rotary cutter twin-shaft structure according to claim 1, wherein: the auxiliary shaft assembly (2) comprises a fixedly connected mounting pipe body (21) and a positioning ring (22), a positioning groove (23) is formed in the handle (100), the positioning ring (22) is located in the positioning groove (23), and two sides of the positioning ring (22) are attached to the handle (100) respectively.
6. A rotary cutter twin-shaft structure according to claim 5, wherein: the mounting structure is characterized in that a mounting groove (24) is formed in one end, away from the positioning ring (22), of the mounting pipe body (21), and the mounting groove (24) is sunken towards the inside of the mounting pipe body (21) along the axial lead direction of the mounting pipe body (21).
7. A rotary cutter twin-shaft structure according to claim 6, wherein: one side of the mounting groove (24) close to the end of the mounting pipe body (21) is provided with a guide groove (25), the guide groove (25) is communicated with the mounting groove (24), and the width of the guide groove (25) is gradually increased from one end close to the mounting groove (24) to one end far away from the mounting groove (24).
8. A rotary cutter twin-shaft structure according to claim 7, wherein: and a guide arc surface (26) is arranged on the side surface of the guide groove (25).
9. A rotary cutter twin-shaft structure according to claim 5, wherein: the side of the mounting pipe body (21) is provided with a first shielding flange (27) in a protruding mode, and the first shielding flange (27) is connected end to end and is annular.
10. A rotary cutter twin-shaft structure according to claim 9, wherein: still be equipped with the second in handle (100) and shelter from flange (28), flange (28) one end is sheltered from to the second and handle (100) internal surface fixed connection, and the other end extends to the direction that is close to installation body (21), flange (28) are sheltered from to the second and are close to installation body (21) one end side and first flange (27) side laminating mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023347674.9U CN215129665U (en) | 2020-12-31 | 2020-12-31 | Double-shaft structure of rotary cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023347674.9U CN215129665U (en) | 2020-12-31 | 2020-12-31 | Double-shaft structure of rotary cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215129665U true CN215129665U (en) | 2021-12-14 |
Family
ID=79402042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023347674.9U Active CN215129665U (en) | 2020-12-31 | 2020-12-31 | Double-shaft structure of rotary cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215129665U (en) |
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2020
- 2020-12-31 CN CN202023347674.9U patent/CN215129665U/en active Active
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