CN213489114U - Medical telescopic grinding head and medical grinding cutter - Google Patents
Medical telescopic grinding head and medical grinding cutter Download PDFInfo
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- CN213489114U CN213489114U CN202021868526.9U CN202021868526U CN213489114U CN 213489114 U CN213489114 U CN 213489114U CN 202021868526 U CN202021868526 U CN 202021868526U CN 213489114 U CN213489114 U CN 213489114U
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Abstract
The utility model discloses a medical telescopic grinding head and a medical grinding cutter, which comprise an inner drill component and an outer pipe component, wherein the inner drill component is provided with a core bar and a head part; the outer tube assembly is sleeved outside the core rod, and the head extends out of the front end of the outer tube assembly; the inner drill assembly and the outer pipe assembly can move relatively in the axial direction, so that the head portion can stretch, a first clamping portion for clamping is arranged on the inner drill assembly, and a second clamping portion for clamping is arranged on the outer pipe assembly. The utility model discloses a medical scalable bistrique, interior brill subassembly can be followed the outer tube subassembly removes, and all corresponds on interior brill subassembly and the outer tube subassembly and be provided with the centre gripping position, can adjust the length that the head exposes the outer tube subassembly as required during the operation to outer tube subassembly and interior brill subassembly all centre gripping location, just can satisfy different doctors' use custom.
Description
Technical Field
The utility model relates to medical equipment especially relates to a medical scalable bistrique and medical grinding cutter.
Background
In micro-otology surgery, a medical grinding head is used for grinding bones of the middle ear and the inner ear. The whole length of the existing medical micro-grinding head is usually fixed, and the whole grinding tool comprises a head, a core rod and an external protection tube, wherein the rod part and the head are sequentially connected, the external protection tube is sleeved outside the core rod, and the far diameter of the core rod is smaller than the diameter of the head. When the head protection device is used, part of doctors consider that the head is close to the external protection tube, the operation is more convenient, and part of doctors also consider that the longer the distance between the head and the front end of the external protection tube is, the better the visual field is during the operation, the operation is easier, and different doctors have different requirements on the position of the head during the operation; however, in the existing medical micro-grinding cutter, the positions of the head and the front end of the external protective tube are relatively fixed, so that the surgical habits of different doctors cannot be met.
Disclosure of Invention
The main object of the utility model is to provide a medical scalable micro-grinding head and medical grinding cutter make the position of head adjustable to satisfy different doctors' different use custom.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
a medical telescopic grinding head comprising:
an inner drill assembly having a core rod and a head; and
the outer tube assembly is sleeved outside the core rod, and the head extends out of the front end of the outer tube assembly;
the inner drill assembly and the outer pipe assembly can move relatively in the axial direction, so that the head portion can stretch, a first clamping portion for clamping is arranged on the outer pipe assembly, and a second clamping portion for clamping is arranged on the inner drill assembly.
Optionally, the second clamping portion extends out of the rear end of the outer tube assembly;
or
The outer tube assembly is provided with a hollowed-out space, and the position of the second clamping part corresponds to the position of the hollowed-out space.
Optionally, a stroke limiting structure for limiting the telescopic stroke of the head is arranged between the inner drill assembly and the outer tube assembly.
Optionally, the front end of the outer tube assembly is provided with a front end limiting surface for limiting the retraction limit position of the head, and the rear end of the outer tube assembly is provided with a rear end limiting surface for limiting the extension limit position of the head;
the inner drill component is provided with a limit step surface which is opposite to the rear limit surface,
when the head is at the retraction limit position, the head is abutted against the front end limit surface, and when the head is at the extension limit position, the rear end limit surface is abutted against the limit step surface.
Optionally, a clamping handle is arranged at the rear end of the inner drill assembly, the limiting step surface is arranged on the clamping handle, the second clamping portion is located on the clamping portion, and the second clamping portion extends out of the outer tube assembly.
Optionally, a positioning insertion hole into which the core rod is inserted is formed in the front end of the clamping handle, an opening is formed in the front end of the clamping handle and located outside the positioning insertion hole, and a welding seam for connecting the clamping handle and the core rod is formed in the opening.
Optionally, the outer tube assembly comprises:
the protective tube is sleeved on the core rod; and
the rear end sheath is integrally sleeved at the rear end of the protective tube, the rear end limiting surface is formed at the rear end of the rear end sheath, and the first clamping part is located on the outer wall of the rear end sheath.
Optionally, the outer tube assembly comprises:
the protective tube is sleeved on the core rod; and
the front end sheath is integrally arranged at the front end of the protective tube, the front end limiting surface is formed at the front end of the front end sheath, and the front end sheath is provided with a guide sealing section which is sleeved outside the core rod in a matching mode.
Optionally, the outer tube assembly comprises:
the protective tube is sleeved on the core rod;
a front end sheath integrally provided at a front end of the protection tube;
a protection wire wound outside the protection tube;
the wire pressing sleeve is sleeved outside the protection pipe;
one end of the protection wire is fixedly connected with the front end sheath, and the other end of the protection wire is tightly pressed outside the protection tube through the wire pressing sleeve.
Optionally, the outer tube assembly comprises
The protective tube is sleeved on the core rod;
a front end sheath integrally provided at a front end of the protection tube;
the rear end sheath is integrally sleeved at the rear end of the protective pipe;
a protection wire wound outside the protection tube;
the wire pressing sleeve is sleeved outside the rear end sheath;
one end of the protective wire is fixedly connected with the front-end sheath, and the other end of the protective wire is tightly pressed outside the rear-end sheath through the wire pressing sleeve.
Optionally, a wire groove is formed in the outer wall of the rear-end sheath, the wire groove is used for winding and fixing a protection wire, and the wire pressing sleeve is coated outside the wire groove.
Optionally, an inner flange is arranged on the wire pressing sleeve, the inner flange is attached to the front end of the rear end sheath, and an avoidance space for the protection wire to enter the wire groove is formed between the inner flange and the protection tube.
The medical grinding cutter comprises a power handle, wherein the medical telescopic grinding head is any one of the power handle, and a clamping structure used for clamping a first clamping part and a second clamping part is arranged on the power handle.
The utility model discloses an among medical scalable bistrique and medical grinding cutter, interior brill subassembly can be followed the outer tube subassembly removes, and all corresponds on interior brill subassembly and the outer tube subassembly and be provided with the centre gripping position, can adjust the length that the head exposes the outer tube subassembly as required during the operation to outer tube subassembly and interior brill subassembly all centre gripping location, just can satisfy different doctors' use custom.
Drawings
Fig. 1 is a schematic structural view of an exemplary medical retractable micro-grinding head according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
FIG. 3 is an enlarged view of a portion of FIG. 1 at II;
FIG. 4 is a partial schematic view of the clamp shank;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
fig. 6 is a schematic view showing another exemplary structure of the medical retractable micro-grinding head of the present invention;
fig. 7 is a top view of fig. 6.
The description of reference numerals in the examples includes:
the inner drill component 1, the head 11, the core rod 12, the clamping handle 13, a limiting step surface 131, a positioning insertion hole 132 and an opening 133;
the outer tube component 2, the front end sheath 21, the protective tube 22, the rear end sheath 23, the line pressing sleeve 24, the protective line 25, the guide sealing section 211, the front end limiting surface 211a, the line groove 231, the rear end limiting surface 232, the inner flange 241 and the hollowed-out space 201;
a first clamping part A and a second clamping part B.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like reference numerals refer to like elements throughout.
The medical telescopic grinding head of each embodiment is matched with a medical grinding drill handle for use in an operation, and the front end is one end away from the medical grinding drill handle in a use state, and the rear end is one end close to the power handle in the use state.
Referring to fig. 1 to 7 in combination, the medical telescopic grinding head of the present invention comprises an inner drill component 1 and an outer tube component 2, wherein the inner drill component 1 has a core rod 12 and a head 11, the outer tube component 2 is sleeved outside the core rod 12, and the head 11 extends out of the front end of the outer tube component 2; the inner drill assembly 1 and the outer tube assembly 2 can move relatively in the axial direction, so that the head 11 can stretch, a first clamping position A for clamping is arranged on the outer tube assembly 1, and a second clamping position B for clamping is arranged on the inner drill assembly 2.
During operation, the first clamping part A and the second clamping part B are clamped through the corresponding clamping structures of the abrasive drilling handles, and power is transmitted to the grinding head through the abrasive drilling handles. In the actual use process, the abrasive drilling handle matched with the medical telescopic grinding head of the utility model can adopt a single clamping mode and also can adopt a double-clamping mode, when the single clamping mode is adopted, the head is firstly stretched to a proper length and then is pinched and arranged in the abrasive drilling handle to be clamped, and at the moment, the effective clamping area of the abrasive drilling handle needs to cover the first clamping part A and the second clamping part B; when adopting two centre gripping modes, the abrasive drilling handle has first clamping structure and the second clamping structure with first clamping position A and second clamping position B one-to-one.
The utility model discloses a medical scalable bistrique, the relative axial position of drilling subassembly 1 and outer tube subassembly 2 in this can adjust the length that head 11 stretches out the outward appearance subassembly, can satisfy different doctors to the demand that head 11 stretches out length.
In some embodiments, referring to fig. 1-5 in combination, the second clamping location B extends beyond the rear end of the outer tube assembly 2. In other embodiments, referring to fig. 6 and 7 in combination, the outer tube assembly 2 has a hollow space 201, and the position of the second clamping portion B corresponds to the position of the hollow space 201, generally, for convenience of clamping, the second clamping portion B is located in the hollow space 201, and the outer wall of the second clamping portion B extends out of the hollow space 201, so that the handle can be smoothly clamped on the outer wall of the second clamping portion B.
In some embodiments, a stroke limit structure for limiting the telescopic stroke of the head 11 is arranged between the inner drill assembly 1 and the outer pipe assembly 2, so that misoperation can be reduced.
In some embodiments, with combined reference to fig. 1 to 5, the front end of the outer tube assembly 2 is provided with a front end limiting surface 211a for limiting the retraction limit position of the head 11, and the rear end of the outer tube assembly 2 is provided with a rear end limiting surface 232 for limiting the extension limit position of the head 11; the inner drill component 1 is provided with a limiting step surface 131 facing the rear limiting surface 232, wherein when the head 11 is at the retraction limit position, the head 11 and the front limiting surface 211 are abutted against each other, and when the head 11 is at the extension limit position, the rear limiting surface 232 and the limiting step surface 131 are abutted against each other.
In some embodiments, the rear end of the inner drill assembly 1 is provided with a clamping handle 13, the limiting step surface 131 is provided on the clamping handle 13, the second clamping portion B is located on the clamping handle 13, and the second clamping portion B extends out of the outer tube assembly 2. Of course, in actual implementation, the limiting step surface 131 may not be provided, and the core rod 12 may directly extend out of the outer tube assembly 2, and the extended portion may be used as the second clamping portion B.
In some embodiments, the front end of the clamping handle 13 is provided with a positioning insertion hole 132 for inserting the core rod 12, the front end of the clamping handle 13 is provided with an opening 133, the opening 133 is located outside the positioning insertion hole 132, and a welding seam for connecting the clamping handle 13 and the core rod 12 is formed in the opening 133, so that the connecting structure of the clamping part and the core rod 12 occupies a small space and the connection is more reliable.
In some embodiments, the outer tube assembly 2 comprises a sheath tube 22 and a rear end sheath 23, the sheath tube 22 is sleeved on the mandrel 12, the rear end sheath 23 is integrally sleeved on the rear end of the sheath tube 22, a rear end limiting surface 232 is formed at the rear end of the rear end sheath 23, and the first clamping position a is located on the outer wall of the rear end sheath 23.
In some embodiments, the outer tube assembly 2 comprises a protective tube 22 and a front end sheath 21, the protective tube 22 is sleeved on the mandrel 12, the front end sheath 21 is integrally arranged at the front end of the protective tube 22, a front end limiting surface 211 is formed at the front end of the front end sheath 21, and the front end sheath 21 is provided with a guide sealing section 211 which is sleeved outside the mandrel 12 in a matching manner.
In some embodiments, the diameter of the front sheath 21 tube is gradually increased from the front end to the back end, so that the front sheath 21 tube has a conical surface, which is beneficial to make the visual field better during the operation.
In other embodiments, the outer tube assembly 2 comprises a protective tube 22, a front end sheath 21, a rear end sheath 23, a protective wire 25 and a wire pressing sleeve 24, wherein the front end sheath 21 is integrally arranged at the front end of the protective tube 22, the rear end sheath 23 is integrally sleeved at the rear end of the protective tube 22, the protective wire 25 is wound outside the protective tube 22, and the wire pressing sleeve 24 is sleeved outside the rear end sheath 23; one end of the protective wire 25 is fixedly connected with the front end sheath 21, and the other end of the protective wire 25 is pressed outside the rear end sheath 23 through the wire pressing sleeve 24.
In other embodiments, the outer tube assembly 2 comprises a protective tube 22, a front end sheath 21, a protective wire 25 and a crimping sleeve 24, wherein the protective tube 22 is sleeved on the core rod 12; the front end sheath 21 is integrally arranged at the front end of the protective tube 22, the protective wire 25 is wound outside the protective tube 22, and the wire pressing sleeve 24 is sleeved outside the protective tube 22; one end of the protective wire 25 is fixedly connected with the front end sheath 21, and the other end of the protective wire 25 is tightly pressed outside the protective tube 22 through the wire pressing sleeve 24.
Wherein, this protective wire 25 can be the nylon wire, the outer tube assembly 2 of this kind of structure, make the protective wire 25 can be reliable twine outside the pillar 22, during the winding, fix the one end of protective wire 25 on the front end sheath 21 (can be fixed through the mode that bonds or impresses the clearance between front end sheath 21 and the pillar 22), then along pillar 22 winding protective wire 25, after the winding is accomplished, push down the other end of protective wire 25 through the line ball cover 24, in the time of practical implementation, the one end of protective wire 25 also can coat the viscose, line ball cover 24 also can be fixed on corresponding pillar 22 or corresponding rear end sheath 23 through the mode of viscose.
In some embodiments, the outer wall of the rear-end sheath 23 has a wire slot 231, the wire slot 231 is used for winding and fixing the protection wire 25, and the wire pressing sleeve 24 is covered outside the wire slot 231, and the wire slot 231 is beneficial to more reliably winding the protection wire 25 on the protection tube 22.
In some embodiments, the wire pressing sleeve 24 is provided with an inner flange 241, the inner flange 241 is attached to the front end of the rear sheath 23, and an avoidance space for the wire groove 231 of the protection wire 25 is formed between the inner flange 241 and the protection tube 22, and the inner flange 241 facilitates more reliable positioning of the wire pressing sleeve 24, so that the wire pressing sleeve 24 and the protection wire 25 are more reliably positioned.
Correspondingly, the utility model also provides a medical grinding cutter, including power handle, any one of the aforesaid medical scalable bistrique, power handle is last to be provided with and to be used for the centre gripping to be in the clamping structure of first clamping part A and second clamping part B.
For example, the clamping arrangement may comprise two axially arranged resilient cartridges for clamping in a one-to-one correspondence at the first clamping location a and the second clamping location B.
In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, and/or groups thereof.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (13)
1. A medical telescopic grinding head, characterized by comprising:
an inner drill assembly having a core rod and a head; and
the outer tube assembly is sleeved outside the core rod, and the head extends out of the front end of the outer tube assembly;
the inner drill assembly and the outer pipe assembly can move relatively in the axial direction, so that the head portion can stretch, a first clamping portion for clamping is arranged on the outer pipe assembly, and a second clamping portion for clamping is arranged on the inner drill assembly.
2. The medical retractable grinding head according to claim 1, wherein:
the second clamping part extends out of the rear end of the outer tube assembly;
or
The outer tube assembly is provided with a hollowed-out space, and the position of the second clamping part corresponds to the position of the hollowed-out space.
3. The medical retractable grinding head according to claim 1, wherein: and a stroke limiting structure used for limiting the telescopic stroke of the head is arranged between the inner drill assembly and the outer pipe assembly.
4. The medical retractable grinding head according to claim 3, wherein:
the front end of the outer tube assembly is provided with a front end limiting surface used for limiting the retraction limiting position of the head, and the rear end of the outer tube assembly is provided with a rear end limiting surface used for limiting the extension limiting position of the head;
the inner drill component is provided with a limit step surface which is opposite to the rear limit surface,
when the head is at the retraction limit position, the head is abutted against the front end limit surface, and when the head is at the extension limit position, the rear end limit surface is abutted against the limit step surface.
5. The medical retractable grinding head according to claim 4, wherein: the rear end of the inner drill assembly is provided with a clamping handle, the limiting step surface is arranged on the clamping handle, the second clamping part is located on the clamping handle, and the second clamping part extends out of the outer tube assembly.
6. The medical retractable grinding head according to claim 5, wherein: the front end of the clamping handle is provided with a positioning insertion hole for inserting the core rod, the front end of the clamping handle is provided with an opening, the opening is positioned on the outer side of the positioning insertion hole, and a welding line for connecting the clamping handle and the core rod is formed in the opening.
7. The medical retractable grinding head according to claim 4, wherein: the outer tube assembly includes:
the protective tube is sleeved on the core rod; and
the rear end sheath is integrally sleeved at the rear end of the protective tube, the rear end limiting surface is formed at the rear end of the rear end sheath, and the first clamping part is located on the outer wall of the rear end sheath.
8. The medical retractable grinding head according to claim 4, wherein: the outer tube assembly includes:
the protective tube is sleeved on the core rod; and
the front end sheath is integrally arranged at the front end of the protective tube, the front end limiting surface is formed at the front end of the front end sheath, and the front end sheath is provided with a guide sealing section which is sleeved outside the core rod in a matching mode.
9. The medical retractable grinding head according to claim 1, wherein said outer tube assembly includes:
the protective tube is sleeved on the core rod;
a front end sheath integrally provided at a front end of the protection tube;
a protection wire wound outside the protection tube;
the wire pressing sleeve is sleeved outside the protection pipe;
one end of the protection wire is fixedly connected with the front end sheath, and the other end of the protection wire is tightly pressed outside the protection tube through the wire pressing sleeve.
10. The medical retractable grater head according to claim 1, wherein the outer tube assembly includes
The protective tube is sleeved on the core rod;
a front end sheath integrally provided at a front end of the protection tube;
the rear end sheath is integrally sleeved at the rear end of the protective pipe;
a protection wire wound outside the protection tube;
the wire pressing sleeve is sleeved outside the rear end sheath;
one end of the protective wire is fixedly connected with the front-end sheath, and the other end of the protective wire is tightly pressed outside the rear-end sheath through the wire pressing sleeve.
11. The medical retractable grinding head according to claim 10, wherein: the wire groove is formed in the outer wall of the rear-end sheath and used for winding and fixing a protection wire, and the wire pressing sleeve is coated outside the wire groove.
12. The medical retractable grinding head according to claim 11, wherein: an inner flange is arranged on the wire pressing sleeve, the inner flange is attached to the front end of the rear end sheath, and an avoidance space for the protective wire to enter the wire groove is formed between the inner flange and the protective tube.
13. A medical grinding cutter is characterized in that: the medical telescopic grinding head comprises a power handle and the medical telescopic grinding head as claimed in any one of claims 1 to 12, wherein a clamping structure for clamping the first clamping part and the second clamping part is arranged on the power handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868526.9U CN213489114U (en) | 2020-08-31 | 2020-08-31 | Medical telescopic grinding head and medical grinding cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868526.9U CN213489114U (en) | 2020-08-31 | 2020-08-31 | Medical telescopic grinding head and medical grinding cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213489114U true CN213489114U (en) | 2021-06-22 |
Family
ID=76443169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021868526.9U Active CN213489114U (en) | 2020-08-31 | 2020-08-31 | Medical telescopic grinding head and medical grinding cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213489114U (en) |
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2020
- 2020-08-31 CN CN202021868526.9U patent/CN213489114U/en active Active
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