CN209996421U - Medical grinding cutter - Google Patents
Medical grinding cutter Download PDFInfo
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- CN209996421U CN209996421U CN201920614218.4U CN201920614218U CN209996421U CN 209996421 U CN209996421 U CN 209996421U CN 201920614218 U CN201920614218 U CN 201920614218U CN 209996421 U CN209996421 U CN 209996421U
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Abstract
The utility model provides an medical grinding cutter, including outer sword pipe, interior sword pipe assembly, bistrique subassembly and control trombone slide, outer sword pipe and the coaxial setting of interior sword pipe assembly, the control trombone slide sets up between interior sword pipe assembly and outer sword pipe, and interior sword pipe assembly front end is connected with bistrique subassembly transmission, the control trombone slide front end is provided with drive unit, be provided with on the bistrique subassembly with drive unit complex second drive unit, when operation control trombone slide makes drive unit act on the second drive unit, second drive unit drives bistrique subassembly is for outer sword pipe lateral shifting the utility model discloses, through drive unit and second drive unit's interact, drive the bistrique for outer sword pipe skew or deflect to increased the grinding scope of bistrique, and add drive unit and second drive unit, the structure is simple relatively, the assembly of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to kinds of medical grinding cutter.
Background
some orthopedic surgeries, sometimes need to grind and drill the bone tissue in the patient, grind and drill the bone tissue by the rotation of the grinding head arranged at the front end of the cutter driven by the power handle, but for the grinding drill which can not change direction, the grinding range of the grinding head can not be controlled by external force when the operation position is deep and the peripheral side direction needs to be ground and drilled, so that the surgery is very inconvenient, in order to overcome the problems, a device for changing direction grinding and drilling which can control the pitching of the grinding head and can revolve around the axis of the cutter is provided, the grinding direction and the grinding range can be conveniently controlled by controlling the rotation, the pitching and the revolution of the grinding head at the front end of the cutter, but in the device, the grinding head and the cutter body are rotatably connected through a hinge, and the pipe is controlled to drive the grinding head to bend relative to the cutter body to realize the pitching, and the structure increases the working range.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art not enough, the utility model aims at providing kinds of medical grinding cutter, increase the working range of bistrique.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
medical grinding cutter, including outer sword pipe, interior sword pipe subassembly, bistrique subassembly and control trombone slide, outer sword pipe and the coaxial setting of interior sword pipe subassembly, between sword pipe subassembly and the outer sword pipe, interior sword pipe subassembly front end is connected with bistrique subassembly transmission including the control trombone slide sets up, the control trombone slide front end is provided with drive disk assembly, be provided with on the bistrique subassembly with drive disk assembly complex second drive disk assembly, when operation control trombone slide makes drive disk assembly act on the second drive disk assembly, the second drive disk assembly drives bistrique subassembly is for outer sword pipe lateral shifting.
The utility model discloses, through drive disk assembly and second drive disk assembly's interact, drive the bistrique for outer cutter tube skew or deflect to increased the grinding scope of bistrique, and add drive disk assembly and second drive disk assembly, the structure is simple relatively, the assembly of being convenient for.
Optionally, at least one of the th transmission member and the second transmission member has an inclined active surface.
Optionally, the inclined acting surface inclines in the axial direction, and the control pull pipe moves along the axial direction to drive the th transmission component to abut against the second transmission component, or the inclined acting surface inclines in the circumferential direction, and the control pull pipe rotates along the circumferential direction to drive the th transmission component to abut against the second transmission component.
Optionally, the medical grinding tool further comprises a stop for limiting the axial or circumferential range of motion of the th transmission component.
Optionally, the medical grinding tool further comprises a limiting structure for limiting the offset direction and/or the offset distance of the grinding head assembly.
Optionally, the front end of the outer cutter tube is connected with a transition sleeve, the front end of the transition sleeve is closed, the limiting structure is a limiting groove axially penetrating through the front end of the transition sleeve, the second transmission part penetrates through the limiting groove, the front end of the second transmission part is connected with the grinding head assembly, and the rear part of the second transmission part is matched with the th transmission part.
Optionally, a limiting member for limiting the forward movement of the second transmission member relative to the transition sleeve is disposed between the second transmission member and the transition sleeve.
Optionally, the limiting groove is a strip-shaped groove.
Optionally, the grinding head assembly comprises a support sleeve and a grinding head rotatably mounted in the support sleeve, the front end of the grinding head is exposed out of the support sleeve, and the second transmission component is connected with the support sleeve.
Optionally, the inner cutter tube assembly comprises an inner cutter tube and a flexible transmission shaft connected to the front part of the inner cutter tube, the flexible transmission shaft penetrates through the centers of the th transmission part and the second transmission part and has gaps with the inner walls of the th transmission part and the second transmission part respectively, and the front end of the flexible transmission shaft is rotationally connected with the grinding head in a one-way degree of freedom and drives the grinding head to rotate.
As mentioned above, the utility model discloses, through transmission component and second transmission component's interact, drive bistrique skew or deflection for outer cutter tube to increased the grinding scope of bistrique, and add transmission component and second transmission component, the structure is simple relatively, the assembly of being convenient for.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention (power connection omitted);
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
figures 3 and 4 are schematic views of the offset of the grater assembly;
FIG. 5 is a schematic cross-sectional view of the mounting relationship of the second drive component to the transition sleeve;
FIG. 6 is a perspective view of the second transmission member in mounted relation to the transition sleeve;
FIG. 7 is a schematic structural view of a second transmission member;
FIG. 8 is a schematic structural view of an th transmission part;
FIG. 9 is a schematic view of the th driving member moving backward to drive the second driving member to move laterally;
fig. 10 is a schematic view of , the transmission component rotates along its axis to drive the second transmission component to move laterally.
Part number description:
1-grinding head, 11-key, 2-supporting sleeve, 3-transition sleeve, 31-limiting groove, 4-second transmission component, 41-limiting piece, 42-stopping portion, 5- th transmission component, 51-action surface, 6-control pull tube, 7-outer cutter tube, 81-inner cutter tube, 82-flexible transmission shaft and 9-power joint.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
The front-back orientation is referred to herein as the use of the grinding tool, with the end facing the patient in use being the front and the end facing away from the patient being the back, i.e., the grater being at the front of the power handle.
Examples
As shown in fig. 1 to 4, the utility model provides kinds of medical grinding tools, including outer knife pipe 7, inner knife pipe 81 subassembly, bistrique subassembly, control trombone 6, wherein, inner knife pipe 81 subassembly coaxial arrangement is in outer knife pipe 7, control trombone 6 sets up between inner knife pipe 81 subassembly and outer knife pipe 7, inner knife pipe 81 subassembly front end and bistrique subassembly transmission connection for to bistrique subassembly transmission rotary power, the key point is, the front end of control trombone 6 is provided with transmission part 5, be provided with on the bistrique subassembly with the second transmission part 4 of transmission part 5 complex, when operation control trombone 6 makes transmission part 5 act on second transmission part 4, second transmission part 4 drives bistrique subassembly relative to outer knife pipe 7 lateral shifting, wherein, the interact of transmission part 5 and second transmission part 4 can be modes such as mutual extrusion, lateral shifting includes lateral shifting and deflection mode, lateral shifting is parallel with outer knife pipe 7 when lateral shifting, lateral shifting with bistrique 1 axis, the outer knife pipe 7 lateral shifting, the outer knife pipe 7 central line is crossed with the bistrique subassembly, make bistrique subassembly produce crooked relative to the outer knife pipe 7.
Through the mutual action of the th transmission part 5 and the second transmission part 4, the grinding head is driven to deviate or deflect relative to the outer cutter tube 7, so that the grinding range of the grinding head 1 is enlarged, and the th transmission part 5 and the second transmission part 4 are additionally arranged, so that the structure is simple and the assembly is convenient for a mode of driving the grinding head to pitch through hinge connection.
In the embodiments, at least of the transmission member 5 and the second transmission member 4 has an inclined action surface 51, so that at least contact surfaces of the transmission member 5 and the second transmission member 4 are inclined surfaces, thereby gradually offsetting the second transmission member 4 relative to the transmission member 5 during mutual pressing of the transmission member 5 and the second transmission member 4, and facilitating adjustment.
Specifically, the th transmission member 5 has an inclined action face 51 against which the second transmission member 4 abuts, as shown in fig. 1 and 8, or the second transmission member 4 has an inclined action face against which the th transmission member 5 abuts, or the th transmission member 5 and the second transmission member 4 each have an inclined action face 51 which form an inclined engagement face, as shown in fig. 9.
In embodiments, the movement mode of the control pull tube 6 is axial forward and backward movement, the inclined action surface 51 is inclined in the axial direction, the control pull tube 6 moves along the axial direction to drive the transmission component 5 to abut against the second transmission component 4, specifically, the control pull tube 6 pushes the transmission component 5 to move forward and the second transmission component 4 to move laterally, as shown in fig. 1, or the control pull tube 6 pushes the transmission component 5 to move backward and the second transmission component 4 to move laterally, as shown in fig. 9, both of which are provided with the inclined surface a.
In another embodiment, the movement mode of the control pull tube 6 is rotation along its own axis, the inclined action surface 51 is inclined in the circumferential direction, the control pull tube 6 rotates along its own axis to drive the -th transmission component 5 and the second transmission component 4 to press each other, so as to drive the grinding head assembly to move laterally, fig. 10 shows a schematic cross section of the -th transmission component 5 and the second transmission component 4 in cooperation, an inclined surface B or an arc surface B is arranged on the outer peripheral surface of the second transmission component 4, and the -th transmission component 5 abuts against the inclined surface B or the arc surface B when rotating counterclockwise in the direction shown by an arrow, so that the second transmission component 4 moves laterally, so as to drive the grinding head 1 to shift or deflect.
The medical grinding tool further comprises a power joint 9, the power joint 9 is used for being connected with rotary power for driving the grinding head 1 to rotate, an adjusting component for driving and controlling the pull tube 6 to move back and forth axially or rotate along the axis of the adjusting component can be arranged on the power joint 9, the adjusting component is connected with the rear end of the control pull tube 6, for example, when the control pull tube 6 is driven to move axially, the adjusting component can adopt a threaded adjusting sleeve, the threaded adjusting sleeve is connected with the rear end of the control pull tube 6 in a threaded manner, the threaded adjusting sleeve is rotated to convert the rotary motion into axial linear motion of the control pull tube 6, when the control pull tube 6 is driven to rotate, the rotary adjusting component directly drives the control pull tube 6 to rotate, the mode of driving and controlling the pull tube 6 to axially or automatically rotate can adopt any modes in the prior art, only modes are exemplified, and the driving modes of controlling the pull tube 6 to move back and forth and automatically rotate of the grinding tool belong to the prior art, and are.
In another embodiment, in order to control the transmission component 5 and the movement stroke of the pull tube 6, the medical grinding tool further comprises a stop part 42 for limiting the axial or circumferential movement range of the transmission component 5, wherein the stop part 42 can be arranged on the second transmission component 4 or the transition sleeve 3, and the stop part 42 is a limit boss arranged on the second transmission component 4 in the present case, and limits the forward movement stroke of the transmission component 5, as shown in fig. 1, 5 and 7, in other embodiments, the corresponding stop part 42 is arranged at the end point of the movement direction according to the backward or self-rotation movement mode of the transmission component 5.
In another embodiment, the medical grinding tool further comprises a limiting structure for limiting the offset direction and/or offset distance of the grater assembly, the controllability is improved by limiting the offset direction and range of the grater assembly, and in particular by limiting the offset direction and offset range of the second transmission member 4, for example by providing a guide groove structure such that the second transmission member 4 is located within the guide groove, defining the offset direction and distance.
As shown in fig. 5 to 7, in this example, in order to facilitate the arrangement of the limit structure, the front end of the outer cutter tube 7 is connected with the transition sleeve 3, the transition sleeve 3 can be fixedly connected with the outer cutter tube 7 by welding or the like, the front end of the transition sleeve 3 is closed and provided with a limit groove 31 axially penetrating through the front end of the transition sleeve 3, the limit groove 31 forms the limit structure, the front end of the second transmission member 4 penetrates through the limit groove 31, the front end is connected with the grinding head assembly, and the rear part is matched with the th transmission member 5.
In this example, the limiting groove 31 is a strip-shaped groove, and the front portion of the second transmission member 4 passes through the strip-shaped groove and can only shift along the length direction of the strip-shaped groove, so as to limit the shift direction and shift range of the second transmission member 4, that is, the shift direction and shift range of the grinding head assembly.
In this embodiment, in order to prevent the th transmission component 5 from pressing the second transmission component 4, the second transmission component 4 is axially moved and cannot be shifted, a limiting component 41 for limiting the forward movement of the second transmission component 4 relative to the transition sleeve 3 is disposed between the second transmission component 4 and the transition sleeve 3, specifically, as shown in fig. 5 to 7, the second transmission component 4 has a stepped shaft structure, and a shoulder thereof abuts against the transition sleeve 3 to limit the forward movement in the axial direction, and when the th transmission component 5 is moved backwards and presses the second transmission component 4, the limiting component is configured to limit the backward movement of the second transmission component 4.
Fig. 8 shows a structural schematic view of the th driving unit 5, in this case, the th driving unit 5 includes an annular main body welded to the front end of the control pulling tube 6, and a wedge-shaped block is formed at the front end of the main body to form an inclined acting surface 51.
In this example, the grinding head assembly includes a support sleeve 2 and a grinding head 1 rotatably mounted in the support sleeve 2, a key 11 is provided on the support sleeve 2 to cooperate with a groove on the grinding head 1 to limit axial movement of the grinding head 1 relative to the support sleeve 2, and the structure belongs to the prior art and is not described again; the front end of the grinding head 1 is exposed out of the support sleeve 2, and the front end of the second transmission part 4 is fixedly connected with the support sleeve 2 in a welding mode and the like.
The inner cutter tube assembly comprises an inner cutter tube 81 and a flexible transmission shaft 82 connected to the front part of the inner cutter tube 81, the flexible transmission shaft 82 is convenient for realizing lateral deviation or deflection of the grinding head assembly, the flexible transmission shaft 82 penetrates through the centers of the -th transmission part 5 and the second transmission part 4 and has gaps with the inner walls of the -th transmission part 5 and the second transmission part 4 respectively, the front end of the flexible transmission shaft 82 is rotatably connected with the grinding head 1 in a one-way freedom manner and drives the grinding head 1 to rotate, the flexible transmission shaft 82 and the grinding head 1 are connected in a manner of adopting a structure in the prior art, which is schematically exemplified in the embodiment, for example, a U-shaped groove is formed in the rear part of the flexible transmission shaft 82 and is fixedly welded with the inner cutter tube 81, a U-shaped groove is formed in the tail end of the grinding head 1, a hinge shaft is arranged at the front end of the flexible transmission shaft 82 and forms a T-shaped structure with the flexible transmission shaft 82, the hinge shaft extends into the U-shaped groove and is.
The utility model discloses, through the interact of drive disk assembly 5 and second drive disk assembly 4, drive bistrique 1 and squint or deflect for outer sword pipe 7 to increased bistrique 1's grinding scope, and add drive disk assembly 5 and second drive disk assembly 4, the structure is simple relatively, the assembly of being convenient for.
It will be appreciated by those skilled in the art that modifications and variations can be made to the disclosed embodiments without departing from the spirit and scope of the invention, and it is intended to cover in the appended claims all such modifications and variations as come within the true spirit and scope of the invention as defined by the appended claims as interpreted according to the following claims in light of the teachings and by the appropriately interpreted .
Claims (10)
- The medical grinding cutter is characterized in that a -th transmission part is arranged at the front end of the control pull tube, a second transmission part matched with the -th transmission part is arranged on the grinding head component, and when the control pull tube is operated to enable the -th transmission part to act on the second transmission part, the second transmission part drives the grinding head component to move laterally relative to the outer cutter tube.
- 2. The medical grinding tool of claim 1 wherein at least of the th and second transmission members has a sloped active surface.
- 3. The medical milling cutter according to claim 2 wherein the inclined working surface is inclined in the axial direction and the control pull tube moves axially to drive the th driving part against the second driving part, or the inclined working surface is inclined in the circumferential direction and the control pull tube rotates circumferentially to drive the th driving part against the second driving part.
- 4. The medical grinding tool of claim 3 further comprising a stop for limiting the range of axial or circumferential motion of the th drive component.
- 5. The medical grinding tool of claim 1 wherein: the medical grinding tool further comprises a limiting structure used for limiting the offset direction and/or the offset distance of the grinding head assembly.
- 6. The medical grinding cutter according to claim 5, wherein the front end of the outer cutter tube is connected with a transition sleeve, the front end of the transition sleeve is closed, the limiting structure is a limiting groove axially penetrating through the front end of the transition sleeve, the second transmission part penetrates through the limiting groove, the front end of the second transmission part is connected with the grinding head assembly, and the rear part of the second transmission part is matched with the transmission part.
- 7. The medical grinding tool of claim 6 wherein: and a limiting piece used for limiting the forward movement of the second transmission part relative to the transition sleeve is arranged between the second transmission part and the transition sleeve.
- 8. The medical grinding tool of claim 6 wherein: the limiting groove is a strip-shaped groove.
- 9. The medical grinding tool according to any of claims 1-8 wherein the grater assembly includes a support housing and a grater rotatably mounted in the support housing, the grater having a front end exposed from the support housing, the second transmission member being connected to the support housing.
- 10. The medical grinding tool as set forth in claim 9, wherein the inner cutter tube assembly includes an inner cutter tube and a flexible transmission shaft connected to the front portion of the inner cutter tube, the flexible transmission shaft passes through the centers of the th transmission member and the second transmission member and has a gap with the inner walls of the th transmission member and the second transmission member, respectively, and the front end of the flexible transmission shaft is rotatably connected to the grinding head in one-way freedom and drives the grinding head to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614218.4U CN209996421U (en) | 2019-04-29 | 2019-04-29 | Medical grinding cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614218.4U CN209996421U (en) | 2019-04-29 | 2019-04-29 | Medical grinding cutter |
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| Publication Number | Publication Date |
|---|---|
| CN209996421U true CN209996421U (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920614218.4U Active CN209996421U (en) | 2019-04-29 | 2019-04-29 | Medical grinding cutter |
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| CN (1) | CN209996421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116807570A (en) * | 2023-04-28 | 2023-09-29 | 苏州大江医疗科技有限公司 | Surgical knife |
| CN116807570B (en) * | 2023-04-28 | 2024-05-14 | 苏州大江医疗科技有限公司 | Surgical knife |
-
2019
- 2019-04-29 CN CN201920614218.4U patent/CN209996421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116807570A (en) * | 2023-04-28 | 2023-09-29 | 苏州大江医疗科技有限公司 | Surgical knife |
| CN116807570B (en) * | 2023-04-28 | 2024-05-14 | 苏州大江医疗科技有限公司 | Surgical knife |
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