CN217744521U - Sealing structure for medical plane cutter - Google Patents
Sealing structure for medical plane cutter Download PDFInfo
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- CN217744521U CN217744521U CN202221544350.0U CN202221544350U CN217744521U CN 217744521 U CN217744521 U CN 217744521U CN 202221544350 U CN202221544350 U CN 202221544350U CN 217744521 U CN217744521 U CN 217744521U
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Abstract
The utility model discloses a seal structure for medical planer tool relates to medical instrument technical field. The outer cutter assembly comprises an outer cutter and an outer cutter handle sleeved at one end of the outer cutter, and the inner cutter assembly comprises an inner cutter and an inner cutter handle sleeved at one end of the inner cutter; the end part of the outer cutter handle is provided with a step hole, the step surface of the step hole is provided with a first step groove for accommodating a first sealing ring, and the side wall of the step hole is provided with a second step groove for accommodating a second sealing ring; the end part of the inner cutter handle is provided with a boss matched with the step hole, and the end part of the boss is provided with a circle of annular bulge. The utility model discloses a double-seal structure, when interior knife tackle spare inserted outer knife tackle spare, the boss tip supported to first sealing washer and realized sealing, when interior knife tackle spare was drawn outward along the axial, bellied back-off structure extrusion second sealing washer realized sealing, and structural design is simple compact, and the reliability is high, has effectively prevented the leakage, has improved work efficiency.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to a seal structure of medical planer tool.
Background
The medical plane cutter is mainly used for the operation of cutting the pathological change tissues or the redundant soft tissues of the ear, the nose, the throat, the joint and other parts. The medical plane cutter mainly comprises an outer cutter component and an inner cutter component, wherein the front ends of the outer cutter component and the inner cutter component are both provided with cutting edges, and usually, the handle part of the outer cutter component is also provided with a water injection hole. When the tissue needs to be cut off in the operation process, the inner knife component can be operated to axially rotate along the inner tube space of the outer knife component, and the human pathological change tissue or soft tissue is cut off by meshing the cutting edges of the inner knife component and the outer knife component at the front end. In the process, normal saline can be introduced into the water injection hole of the outer knife component to clean tissues and wounds, and the like, and then the cut pathological tissues or soft tissues are pumped out of the human body through the suction channel of the inner knife component.
At present, a sealing ring is arranged at the end surface matching position of the outer cutter component and the tail end of the inner cutter component for sealing. Because the inner knife component and the outer knife component are assembled in a non-tight fit manner, the inner knife component and the outer knife component can relatively pull and move along the axial direction, and cannot be completely sealed, so that water in a water injection channel is easy to leak in the operation process, and the normal operation of the operation is influenced; meanwhile, in the operation process, the medical plane cutter is in high-speed operation, in order to prevent abrasion of the plane cutter, a certain gap is reserved at the matching position of the handle parts of the inner cutter assembly and the outer cutter assembly generally, the structure enables the sealing effect of the inner cutter assembly and the outer cutter assembly to be poor, outside air enters the plane cutter along the gap, negative pressure of a suction channel is reduced, the suction efficiency of the operation is influenced, the cut pathological change tissues or soft tissues can not be smoothly discharged, and blockage of the suction channel can be caused in serious cases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seal structure of medical planer tool sets up double-seal structure through the junction of outer knife tackle spare and interior knife tackle spare to protruding formation back-off structure on handle of a knife boss including through setting up, make interior knife tackle spare when drawing outward along the axial for outer knife tackle spare, the extrusion second sealing washer realizes further sealedly, can't realize thoroughly sealing when having solved the relative pull motion of interior knife tackle spare, lead to the problem that water injection channel takes place to leak among the operation process.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a sealing structure for a medical planer tool, which comprises an outer tool assembly and an inner tool assembly, wherein the outer tool assembly is sleeved outside the inner tool assembly, and the outer tool assembly and the inner tool assembly can rotate relatively; a first sealing ring and a second sealing ring for sealing the outer cutter assembly and the inner cutter assembly are further arranged at the joint of the outer cutter assembly and the inner cutter assembly; the outer cutter assembly comprises an outer cutter and an outer cutter handle sleeved on one end part of the outer cutter, a step hole is formed in the end part of the outer cutter handle, a first step groove used for accommodating a first sealing ring is formed in the step surface of the step hole, and a second step groove used for accommodating a second sealing ring is formed in the side wall of the step hole; the inner cutter assembly comprises an inner cutter and an inner cutter handle sleeved at one end of the inner cutter, a boss matched with the step hole is arranged at the end of the inner cutter handle connected with the outer cutter handle, and the boss is inserted into the step hole to realize the connection of the outer cutter assembly and the inner cutter assembly.
As a preferred technical scheme of the utility model, the cross section one end of first sealing washer be with the stair structure of first step groove adaptation, another terminal surface is sealed face and hugs closely the terminal surface of boss in order to reach sealed effect, the internal diameter of first sealing washer is greater than the external diameter of interior sword.
As a preferred technical scheme of the utility model, the tip of boss is equipped with the arch that is used for spacing second sealing washer along hoop a week.
As a preferred technical scheme of the utility model, the cross section of second sealing washer is the U type to its opening direction and axial direction are parallel, the internal diameter of second sealing washer is greater than the external diameter of boss, and is less than bellied external diameter.
As a preferred technical scheme of the utility model, outer sword and interior sword are the tubular structure, and the external diameter of interior sword is less than the internal diameter of outer sword, in the interior sword inserted outer sword, the rethread the assembly of outer sword subassembly and interior sword subassembly is accomplished in grafting in boss and step hole.
As an optimal technical scheme of the utility model, be provided with the water filling port who link up to outer sword inner wall on the outer handle of a knife.
As an optimal technical scheme of the utility model, the one end that outer handle of a knife was kept away from to outer sword is equipped with first work end, be equipped with first cutting edge on the first work end.
As a preferred technical scheme of the utility model, the one end that interior sword is close to interior handle of a knife is connected to the suction passageway, and the one end of keeping away from interior handle of a knife is second work end, be equipped with the second cutting edge with first cutting edge adaptation on the second work end.
As an optimized technical solution of the present invention, the first cutting edge and the second cutting edge are saw-tooth structures capable of engaging with each other.
The utility model discloses following beneficial effect has:
the utility model discloses outer cutter unit spare and interior cutter unit spare are sealed to adopt double containment structure, including the terminal surface cooperation department of cutter unit spare and outer cutter unit spare set up first sealing washer, form first layer seal structure, and simultaneously, second step groove embedding second sealing washer on outer cutter unit spare, make interior cutter unit spare when taking out along the axial, form second layer seal structure through extruding the second sealing washer, moreover, the steam generator is simple in structure, and reasonable in design, the production assembly of being convenient for has effectively improved the reliability of structure, the quality of operation has also been improved simultaneously.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a sealing structure of a medical planer tool of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of the drawing;
FIG. 3 is a partial enlarged view of FIG. 2 at B;
FIG. 4 is a schematic view of the inner handle structure of the present invention;
fig. 5 is a schematic structural diagram of the first sealing ring and the second sealing ring of the present invention;
in the drawings, the reference numbers indicate the following list of parts:
1-outer cutter assembly, 2-inner cutter assembly, 3-first sealing ring, 4-second sealing ring, 11-outer cutter, 12-outer cutter handle, 21-inner cutter, 22-inner cutter handle, 111-first working end, 121-stepped hole, 122-first stepped groove, 123-second stepped groove, 124-water injection port, 211-second working end, 221-boss and 222-bulge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1, the utility model relates to a seal structure for medical planer tool, including outer knife tackle spare 1 and interior knife tackle spare 2, outer knife tackle spare 1 includes outer sword 11 and cover and establishes the outer handle of a knife 12 at outer sword 11 one end, interior knife tackle spare 2 includes interior sword 21 and cover and establishes the interior handle of a knife 22 at interior sword 21 one end, and the outside of knife tackle spare 2 is established including outer knife tackle spare 1 cover, through outer handle of a knife 12 and interior handle of a knife 22 plug-in connection to outer knife tackle spare 1 and interior knife tackle spare 2 can rotate relatively.
Referring to fig. 2 and 3, a first sealing ring 3 and a second sealing ring 4 are arranged at the joint of the outer cutter assembly 1 and the inner cutter assembly 2; a step hole 121 is formed in the end portion, far away from the outer cutter, of the outer cutter handle 12, a first step groove 122 for accommodating the first sealing ring 3 is formed in the step surface of the step hole 121, and a second step groove 123 for accommodating the second sealing ring 4 is formed in the side wall of the step hole 121; the end part of the inner cutter handle 22 connected with the outer cutter handle 12 is provided with a boss 221 matched with the stepped hole 121, and when the inner cutter handle is assembled, the boss 221 is inserted into the stepped hole 121 to realize the connection of the outer cutter component 1 and the inner cutter component 2.
Referring to fig. 1 and 2, the outer cutter 11 and the inner cutter 21 are both tubular structures, the outer diameter of the inner cutter 21 is smaller than the inner diameter of the outer cutter 11, the inner cutter 21 is inserted into the tube of the outer cutter 11, and the assembly of the outer cutter assembly 1 and the inner cutter assembly 2 is completed by inserting the boss 221 and the stepped hole 121; a water filling port 124 penetrating through the inner wall of the outer cutter 11 is formed in the outer cutter handle 12, a first working end 111 is arranged at one end, away from the outer cutter handle 12, of the outer cutter 11, physiological saline can flow to the first working end 111 along the water filling port 124, and a first cutting edge is arranged at the first working end 111; one end of the inner cutter 21 close to the inner cutter handle 22 is connected to a suction device, a suction channel is formed in the tube of the inner cutter 21, one end far away from the inner cutter handle 22 is a second working end 211, and a second cutting edge matched with the first cutting edge is arranged on the second working end 211; the first cutting edge and the second cutting edge are of a serrated or blade type that can engage with each other.
Referring to fig. 3, 4 and 5, one end surface of the cross section of the first seal ring 3 is a stepped structure adapted to the first stepped groove 122, the other end surface is used as a sealing surface, and the inner diameter of the first seal ring 3 is larger than the outer diameter of the inner cutter 21;
the cross section of the second sealing ring 4 is U-shaped, the opening direction of the second sealing ring 4 is parallel to the axial direction, the second sealing ring 4 is nested in the second stepped groove 123, the inner diameter of the second sealing ring 4 is larger than the outer diameter of the boss 221, a bulge 222 used for limiting the second sealing ring 4 is arranged at the end part of the boss 221 in a circumferential mode, and the inner diameter of the second sealing ring 4 is smaller than the outer diameter of the bulge 222;
when the outer cutter assembly 1 is assembled with the inner cutter assembly 2, the boss 221 is inserted into the stepped hole 121, the end face of the boss 221 abuts against the first sealing ring 3 to achieve first-layer sealing, when the boss 221 is axially pulled away, the boss 222 limits and extrudes the second sealing ring 4 to form an arch, and a gap between the stepped hole 121 and the boss 221 is blocked to achieve second-layer sealing.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A sealing structure for a medical plane cutter comprises an outer cutter component (1) and an inner cutter component (2), wherein the outer cutter component (1) is sleeved on the outer side of the inner cutter component (2), and the outer cutter component (1) and the inner cutter component (2) can rotate relatively;
the method is characterized in that: the cutting tool further comprises a first sealing ring (3) and a second sealing ring (4) which are used for sealing the joint of the outer cutter component (1) and the inner cutter component (2);
the outer cutter assembly (1) comprises an outer cutter (11) and an outer cutter handle (12) sleeved at one end of the outer cutter (11), a step hole (121) is formed in the end, far away from the outer cutter (11), of the outer cutter handle (12), a first step groove (122) used for containing a first sealing ring (3) is formed in the step surface of the step hole (121), and a second step groove (123) used for containing a second sealing ring (4) is formed in the side wall of the step hole (121);
interior sword subassembly (2) include interior sword (21) and cover establish interior handle of a knife (22) at interior sword (21) one end, the tip setting of connecting outer handle of a knife (12) on interior handle of a knife (22) and boss (221) of step hole (121) adaptation, the connection of outer sword subassembly (1) and interior sword subassembly (2) is realized in step hole (121) is inserted in boss (221).
2. A sealing structure for a medical shaver according to claim 1, wherein one end face of the cross section of the first seal ring (3) is a stepped structure fitted with the first stepped groove (122), and the other end face is a sealing face, and the inner diameter of the first seal ring (3) is larger than the outer diameter of the inner cutter (21).
3. A sealing structure for a medical planer tool according to claim 1, wherein the end of the boss (221) is circumferentially provided with a protrusion (222) for limiting the second sealing ring (4).
4. A sealing structure for a medical shaver as set forth in claim 3, wherein the second seal ring (4) is U-shaped in cross section and has an opening direction parallel to the axial direction, and an inner diameter of the second seal ring (4) is larger than an outer diameter of the boss (221) and smaller than an outer diameter of the projection (222).
5. The sealing structure for the medical plane blade as claimed in any one of claims 1 to 4, wherein the outer blade (11) and the inner blade (21) are both tubular structures, the outer diameter of the inner blade (21) is smaller than the inner diameter of the outer blade (11), the inner blade (21) is inserted into the tube of the outer blade (11), and the assembly of the outer blade assembly (1) and the inner blade assembly (2) is completed by the insertion of the boss (221) and the stepped hole (121).
6. The sealing structure for the medical plane blade as claimed in claim 5, wherein the outer cutter handle (12) is provided with a water injection port (124) penetrating to the inner wall of the outer cutter (11).
7. A sealing structure for a medical planer tool according to claim 6, characterized in that the end of the outer tool (11) away from the outer tool shank (12) is provided with a first working end (111), and the first working end (111) is provided with a first cutting edge.
8. A sealing structure for a medical planer tool according to claim 7, characterized in that the end of the inner tool (21) close to the inner tool shank (22) is connected to a suction device, the end far away from the inner tool shank (22) is a second working end (211), and a second cutting edge adapted to the first cutting edge is arranged on the second working end (211).
9. A sealing structure for a medical shaver as set forth in claim 8, wherein the first cutting edge and the second cutting edge are saw-tooth structures capable of engaging with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221544350.0U CN217744521U (en) | 2022-06-20 | 2022-06-20 | Sealing structure for medical plane cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221544350.0U CN217744521U (en) | 2022-06-20 | 2022-06-20 | Sealing structure for medical plane cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217744521U true CN217744521U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221544350.0U Active CN217744521U (en) | 2022-06-20 | 2022-06-20 | Sealing structure for medical plane cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217744521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115068050A (en) * | 2022-07-29 | 2022-09-20 | 重庆西山科技股份有限公司 | Medical grinding cutter and dynamic sealing structure thereof |
-
2022
- 2022-06-20 CN CN202221544350.0U patent/CN217744521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115068050A (en) * | 2022-07-29 | 2022-09-20 | 重庆西山科技股份有限公司 | Medical grinding cutter and dynamic sealing structure thereof |
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