CN109793554B - Medical operation planer tool - Google Patents
Medical operation planer tool Download PDFInfo
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- CN109793554B CN109793554B CN201811562567.2A CN201811562567A CN109793554B CN 109793554 B CN109793554 B CN 109793554B CN 201811562567 A CN201811562567 A CN 201811562567A CN 109793554 B CN109793554 B CN 109793554B
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- cutter
- cutter member
- inner cutter
- plug
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 230000003902 lesion Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001575 pathological effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
Abstract
The invention discloses a medical surgical planer tool, which belongs to the field of medical surgical excision tools and comprises an outer cutter member and an inner cutter member arranged in the outer cutter member, wherein the inner cutter member and the outer cutter member are arranged in a relative rotation mode, a notch is formed in the outer cutter member, part of the inner cutter member is exposed out of the notch, when the inner cutter member and the outer cutter member relatively rotate, tissue close to the notch is excised, the end portion of the inner cutter member is provided with a cutter edge, a first inner cavity is arranged in the inner cutter member, the cutter edge is communicated with the first inner cavity, an inner cutter plug axially arranged along the first inner cavity is arranged in the first inner cavity, the first inner cavity is communicated with negative pressure equipment, and a protective gap is formed between the peripheral side wall of the inner cutter plug and the wall of the first inner cavity. The invention has the advantages of effectively reducing the miscut rate and having better protection to normal tissues.
Description
[ field of technology ]
The invention relates to a medical surgical planer, and belongs to the field of medical surgical equipment.
[ background Art ]
In medicine, when operating on the human body, various operation cutters are needed, and the endoscope type operation cutters are often equipment with higher precision, so that the resecting type planing tool mainly comprises an outer cutter and an inner cutter arranged in the outer cutter, the inner cutter is rotatable, the end part of the outer cutter is provided with a notch, the end part of the inner cutter is provided with a cutter head, the cutter head is exposed out of the notch, when the target tissue needs to be resected, the notch is close to the target tissue, the cutter head resects the tissue when the inner cutter rotates, and the resected tissue is sucked out by a plurality of suction equipment with larger suction force.
At present, the surgical plane knife for the surgery has a large incision, and can contact normal tissues around lesion tissues in the moving process when cutting target tissues, so that the normal tissues are cut by mistake, and the surgical risk is high.
[ invention ]
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the medical surgical planer which can effectively reduce the miscut rate and has better protection to normal tissues.
The invention solves the technical problems and adopts the following technical scheme:
the utility model provides a medical surgical planer, includes outer sword component and establishes the interior sword component in outer sword component, interior sword component and outer sword component relative rotation set up, be equipped with the incision on the outer sword component, interior sword component part exposes in the incision, and the tissue that contacts incision department is resected when interior sword component and outer sword component rotate relatively, the tip of interior sword component is equipped with the edge of a knife, is equipped with first inner chamber in the interior sword component, the edge of a knife communicates with first inner chamber, be equipped with the interior sword end cap of establishing along first inner chamber axial in the first inner chamber, first inner chamber communicates with each other with negative pressure equipment, form the protection clearance between interior sword end cap week lateral wall and the first inner chamber wall.
The beneficial effects of the invention are that:
in the invention, an inner cutter plug is arranged in the first inner cavity of the inner cutter component, after the inner cutter plug is arranged in the inner cutter component, a gap is formed between the peripheral side wall of the inner cutter plug and the first inner cavity wall, the gap is obviously smaller than the inner diameter of the first inner cavity, so that a protection gap is formed, and the resected tissue is discharged through the gap under the action of negative pressure, so that when some normal tissues are miscut, a large amount of tissues are not resected in a short time due to space limitation, enough reaction time is provided for operators to adjust, and the traditional surgical planer has larger incision of the outer cutter component and larger inner cavity of the inner cutter component, so that once the cutter is contacted with the normal tissues, a large amount of tissues are resected in a short time, which brings high operation requirements to medical staff.
Preferably, the distance of the protection gap is between 0.3mm and 3.5 mm.
Preferably, a second inner cavity is formed in the inner cutter plug, the second inner cavity is communicated with the negative pressure equipment, and a connecting hole for communicating the first inner cavity and the second inner cavity is formed in the radial direction of the inner cutter plug.
Preferably, the diameter of the connecting hole is between 0.3mm and 3.5 mm.
Preferably, the diameter of the connecting hole is D1, the distance of the protection gap is D2, and D1/D2 satisfies 1/4 to 3/4.
Preferably, the axial length of the inner cutter plug is between 3mm and 20 mm.
Preferably, at least two connecting holes are formed in the peripheral side wall of the inner cutter plug.
Preferably, the inner cutter plugs and the end walls of the inner cutter members are formed by laser welding, and the same inner cutter member is matched with the inner cutter plugs with different outer diameters so as to adjust the protection clearance.
Preferably, the inner cutter member comprises a cutter head section and a main body section, the inner cutter plug is fixed in the cutter head section, and the cutter head section is fixedly connected with the main body section.
Preferably, the inner cutter member is connected with an inner cutter seat at one side far away from the inner cutter plug, the inner cutter seat is connected with an elastic piece, and the elastic piece provides axial force for the inner cutter seat so that the end part of the inner cutter member abuts against the end part of the outer cutter member.
These features and advantages of the invention will be disclosed in more detail in the following detailed description and accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic overall structure of a first embodiment of the present invention;
FIG. 2 is a schematic view illustrating assembly of an outer cutter member and an inner cutter member according to an embodiment of the present invention;
FIG. 3 is an exploded view of an outer cutter member and an inner cutter member in accordance with an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an outer cutter member and an inner cutter member in accordance with an embodiment of the present invention;
fig. 5 is an enlarged schematic view at a in fig. 4.
[ detailed description ] of the invention
The technical solutions of the embodiments of the invention are explained and illustrated below with reference to the drawings of the embodiments of the invention, but the embodiments described below are only preferred embodiments of the invention, not all. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.
In the following description, directional or positional relationships such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are presented for convenience in describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Embodiment one:
as shown in fig. 1 to 5, the present embodiment is a medical surgical knife, which is mainly used for resecting pathological tissues of organs of human body such as uterus and bladder, and of course, may also be used for resecting pathological tissues of other organs, the surgical knife of the present embodiment includes an outer knife member 1, the inner knife member 2 is hollow inside the outer knife member 1, the outer knife member 1 and the inner knife member 2 are generally in a slender tubular shape, so that the inner knife member 2 and the outer knife member 1 can extend into the human body like an endoscope to perform surgery, the inner knife member 2 and the outer knife member 1 are relatively rotatably arranged, an incision 11 is provided on the outer knife member 1, and usually, the incision 11 is preferably provided at the end of the outer knife member 1, the inner knife member 2 is partially exposed to the incision 11, the inner knife member 2 is exposed to the incision 11, the incision 21 is generally provided with saw-tooth-shaped protrusions 200, and the incision 21 rotates at a high speed in the outer knife member 1 to resect tissues adjacent to the incision 11.
The main improvement of the embodiment is that a first inner cavity 201 is arranged inside the inner cutter member 2, the first inner cavity 201 is communicated with a cutter edge 21, a serrated protrusion 200 is arranged at the cutter edge 21, an inner cutter plug 3 which is axially arranged along the first inner cavity 201 is arranged in the first inner cavity 201, the first inner cavity 201 is communicated with negative pressure equipment, and a protective gap 300 is formed between the peripheral side wall of the inner cutter plug 3 and the wall of the first inner cavity 201.
In this embodiment, since the inner knife plug 3 is separately disposed in the first inner cavity 201 of the inner knife member 2, after the inner knife plug 3 is disposed in the inner knife member 2, a gap is formed between the peripheral side wall of the inner knife plug 3 and the wall of the first inner cavity 201, which is significantly smaller than the inner diameter of the first inner cavity 201, so that the gap forms a protection gap 300, and the resected tissue is discharged through the protection gap 300 under the negative pressure effect, when some normal tissues are miscut, a large amount of tissues are not resected in a short time due to limited space, enough reaction time is provided for an operator to adjust, while the incision 11 of the outer knife member 1 is larger, and once the cutter is contacted with the normal tissues, a large amount of tissues are resected in a short time, which puts a high operation requirement on medical staff.
In order to optimize the protection effect, the distance between the protection gap 300 and the first cavity 201 in the present embodiment is preferably between 0.3mm and 3.5mm, and is preferably 1mm or 1.5mm, and if the protection gap 300 is too small, the excised tissue is not smoothly discharged from the protection gap 300, because the pathological tissue needs to be sucked out of the protection gap 300 by means of the negative pressure of the first cavity 201, and if the protection gap 300 is too large, the better protection effect is not achieved, because some normal tissue that is resected by mistake may be quickly excised and discharged.
In addition, in this embodiment, in order to better accurately locate the target lesion tissue to be resected, the inner cutter plug 3 is internally provided with the second inner cavity 301, the second inner cavity 301 is communicated with the negative pressure device, the radial direction of the inner cutter plug 3 is provided with the connecting hole 32 communicated with the first inner cavity 201 and the second inner cavity 301, after the connecting hole 32 is arranged, the connecting hole 32 can be used as an adsorption hole, once the connecting hole 32 is close to the lesion tissue, after the negative pressure device is started, the lesion tissue can be adsorbed on the connecting hole 32, so that the cutter head can not generate larger displacement, and the miscut rate of normal tissues around the lesion tissue is reduced. The negative pressure device connected to the second inner chamber 301 and the negative pressure device connected to the first inner chamber 201 may be the same device or may be two separate devices, and of course, the same device is preferable, and the first inner chamber 201 and the second inner chamber 301 are communicated with each other.
The diameter D1 of the connecting hole 32 is preferably between 0.3mm and 3.5mm, and preferably 1mm or 1.5mm. If the aperture of the connection hole 32 is small, the whole area of the connection hole 32 is too small, and the adsorption effect on the lesion tissue is poor; if the aperture is large, the normal tissue which is erroneously cut is easily discharged directly through the connection hole 32, and the protection effect is affected.
In addition, regarding the relationship between the aperture of the connecting hole 32 and the protection gap 300, the diameter of the connecting hole 32 is D1, the distance of the protection gap 300 is D2, and D1/D2 satisfies 1/4 to 3/4, and usually preferably D1/d2=1/2, the ratio relationship is that the protection gap 300 is slightly larger than the aperture of the connecting hole 32, so that the excised tissue can be ensured to be discharged from the protection gap 300, if the aperture of the connecting hole 32 is larger than the protection gap 300, the excised tissue can be discharged from the connecting hole 32, so that the blockage and the like are easy to occur, while D1/D2 is kept between 1/4 and 3/4, so that the protection gap 300 can be ensured as a main discharge channel as much as possible, and the connecting hole 32 is mainly used as an adsorption function.
In addition, in the embodiment, the length of the inner cutter plug 3 is optimized, and the axial length of the inner cutter plug 3 is 3-20 mm. In the axial direction, the radial direction, and the like, both referring to the inner blade member 2 and the outer blade member 3, the axial length of the inner blade plug 3 is preferably generally 8mm, 9mm, 10mm, and the like, and if the axial length of the inner blade plug 3 is too short, the length of the protection gap 300 is easily too short, the protection effect is poor, and if the protection gap 300 is too large, the protection gap 300 is easily too long and narrow, and the tissue discharge is easily obstructed.
In other respects, in this embodiment, at least two connecting holes 32 are preferably formed on the peripheral sidewall of the inner cutter plug 3, because the stop position of the inner cutter member 2 may not be fixed each time, and each stop position corresponds to the initial position of the next suction, while during suction, it is usually ensured that the connecting hole 32 is aligned with the position of the notch 11 as much as possible, and after a plurality of connecting holes 32 are formed, one connecting hole 32 is ensured to be located near the notch 11 as much as possible, so that suction operation can be performed each time when the initial position of the inner cutter member 2 is ensured, and the operation of adjusting the connecting hole 32 is reduced.
Since different operations will be different for the resected tissue, the protection gap 300 corresponding to different operation plane cutters will also be different, in this embodiment, the inner cutter plug 3 and the end wall of the inner cutter member 2 are formed by laser welding, the same inner cutter member 2 can be matched with the inner cutter plug 3 with different outer diameters to adjust the protection gap 300, so that the inner cutter member 2 is designed in such a way that when different protection gaps 300 are needed, the inner cutter plugs 3 with different outer diameters can be laser welded in the inner cutter member 2, and for production and manufacture, only different inner cutter plugs 3 need to be produced, and other components can be universal, so that the modularized design is very beneficial to manufacture.
In addition, for other aspects, the inner cutter member 2 in this embodiment includes a cutter head segment 2a and a body segment 2b, the inner cutter plug 3 is fixed in the cutter head segment 2a, and the cutter head segment 2a is fixedly connected with the body segment 2 b. The same applies to the main body section 2b, and if a different protective gap 300 is required for the surgical plane blade, a different head section 2a may be replaced.
As shown in fig. 4, the inner blade member 2 is connected to an inner blade holder 4 on a side away from the inner blade plug 3, the inner blade holder 4 is connected to an elastic member 41, and the elastic member 41 provides an axial force to the inner blade holder 4 so that an end of the inner blade member 2 abuts against an end of the outer blade member 1. Because the inner cutter member 2 is to be rotated inside the outer cutter member 1, the interference fit cannot be completed between the two, and the optimal assembly gap is zero, however, because of the problems of the actual machining process or the assembly process, the ideal assembly gap cannot be realized, and the gap is unavoidable in both the axial direction and the radial direction. In this embodiment, an elastic member 41 is connected to the inner cutter holder 4, and in this embodiment, the elastic member 41 is preferably a spring, and the elastic member 41 provides an axial elastic force for the inner cutter holder 4, so that the end portion of the inner cutter member 2 can be always attached to the inner wall of the end portion of the outer cutter member 1, and thus axial movement can be reduced, and stability is better.
Of course, for the surgical plane blade of the present embodiment, the surgical plane blade further includes a hand-holding portion 5, the hand-holding portion 5 is sleeved outside the outer blade member 1, the outer blade member 1 is fixed on the hand-holding portion 5 through a blade locking mechanism 6, the hand-holding portion 5 is connected with an instrument interface 51, the instrument interface 51 is connected with a negative pressure device, an instrument channel is formed inside the hand-holding portion 5, one end of the instrument channel is communicated with the instrument interface 51, the other end of the instrument channel is communicated with the first inner cavity 201 and the second inner cavity 301, so that negative pressure is generated to the first inner cavity 201 and the second inner cavity 301, and in addition, a plurality of start switches 52 are further arranged on the hand-holding portion 5, and are used for controlling the rotation or stop of the inner blade member 2, and also can be used for controlling the opening or closing of the negative pressure device.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but includes, but is not limited to, the drawings and the description of the specific embodiments. Any modifications which do not depart from the functional and structural principles of the invention are intended to be included within the scope of the appended claims.
Claims (8)
1. The medical surgical planer comprises an outer cutter member and an inner cutter member arranged in the outer cutter member, wherein the inner cutter member and the outer cutter member are arranged in a relative rotation manner, a notch is formed in the outer cutter member, a part of the inner cutter member is exposed out of the notch, and tissue close to the notch is resected when the inner cutter member and the outer cutter member relatively rotate; the inner cutter plug is internally provided with a second inner cavity which is communicated with negative pressure equipment, and a connecting hole which is communicated with the first inner cavity and the second inner cavity is formed in the radial direction of the inner cutter plug; the inner cutter component comprises a cutter head section and a main body section, the inner cutter plug is fixed in the cutter head section, and the cutter head section is fixedly connected with the main body section.
2. A medical planer tool as claimed in claim 1 wherein the distance of the guard gap is between 0.3mm and 3.5 mm.
3. A medical planer tool as claimed in claim 1 wherein the diameter of the attachment aperture is between 0.3mm and 3.5 mm.
4. The medical scalpel of claim 1, wherein the diameter of the connecting hole is D1, the distance of the protective gap is D2, and D1/D2 satisfies 1/4 to 3/4.
5. A medical grade knife as claimed in claim 1, wherein the axial length of the inner knife plug is between 3mm and 20 mm.
6. The medical scalpel of claim 1 wherein the peripheral side wall of the inner blade plug is provided with at least two attachment holes.
7. A medical planer as claimed in claim 1 wherein the inner cutter plug is laser welded to the end wall of the inner cutter member and the same inner cutter member is matched to inner cutter plugs of different outer diameters to adjust the protective gap.
8. A medical planer as claimed in claim 1 wherein the inner cutter member is connected to an inner cutter base on a side remote from the inner cutter plug, the inner cutter base being connected to an elastic member which provides an axial force to the inner cutter base to urge the end of the inner cutter member against the end of the outer cutter member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562567.2A CN109793554B (en) | 2018-12-20 | 2018-12-20 | Medical operation planer tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562567.2A CN109793554B (en) | 2018-12-20 | 2018-12-20 | Medical operation planer tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109793554A CN109793554A (en) | 2019-05-24 |
| CN109793554B true CN109793554B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811562567.2A Active CN109793554B (en) | 2018-12-20 | 2018-12-20 | Medical operation planer tool |
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| Country | Link |
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| CN (1) | CN109793554B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116370020B (en) * | 2023-06-07 | 2023-08-25 | 杭州锐健马斯汀医疗器材有限公司 | Planing tool and planing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388875A (en) * | 2016-11-30 | 2017-02-15 | 重庆西山科技股份有限公司 | Rotary cutting operation assembly |
| CN107669309A (en) * | 2017-10-11 | 2018-02-09 | 常州市斯博特医疗器械有限公司 | Urological surgery knife system |
| CN108938041A (en) * | 2018-07-19 | 2018-12-07 | 上海博进凯利泰医疗科技有限公司 | A kind of Medical planing bistrique |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRE20020075A1 (en) * | 2002-10-02 | 2004-04-03 | Cgm Spa | TOOL TO REMOVE AND COLLECT FLAKES OR SHAVINGS |
| US8277474B2 (en) * | 2004-05-26 | 2012-10-02 | Medtronic, Inc. | Surgical cutting instrument |
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2018
- 2018-12-20 CN CN201811562567.2A patent/CN109793554B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388875A (en) * | 2016-11-30 | 2017-02-15 | 重庆西山科技股份有限公司 | Rotary cutting operation assembly |
| CN107669309A (en) * | 2017-10-11 | 2018-02-09 | 常州市斯博特医疗器械有限公司 | Urological surgery knife system |
| CN108938041A (en) * | 2018-07-19 | 2018-12-07 | 上海博进凯利泰医疗科技有限公司 | A kind of Medical planing bistrique |
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| CN109793554A (en) | 2019-05-24 |
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