CN216394195U

CN216394195U - Bendable medical planing knife

Info

Publication number: CN216394195U
Application number: CN202122251088.2U
Authority: CN
Inventors: 何成东; 岳欣; 刘博�
Original assignee: Jiangsu Bonss Medical Technology Co ltd
Current assignee: Bangshi Medical Technology Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-04-29
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a bendable medical planing knife which comprises an outer planing knife and an inner planing knife which are movably connected, and a rotating device which is electrically connected with the outer planing knife and the inner planing knife, wherein the outer planing knife is provided with a hollow outer planing tube, one side of the outer planing tube, which is close to the inner planing knife, is connected with a knife sheath through threads, one side of the outer planing tube, which is far away from the inner planing knife, is welded with an outer tool bit, the outer tool bit is provided with a hollow outer cutting edge, a stainless steel tube is fixedly arranged in the outer planing tube, and a flexible snake bone tube is welded at the position of the stainless steel tube, which is close to the outer tool bit. When the medical flexible planing tool provided by the utility model is used for planing the tissues at the corner positions, the cutting of the access incision is avoided to be made again according to the actual operation requirements, the planing tool is bent and adjusted, the depth angle of the instrument can be changed, the situation that the operation cost is increased and the operation time is prolonged due to frequent replacement of planing tools with different bending specifications is avoided.

Description

Bendable medical planing knife

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a bendable medical planing knife.

Background

In recent years, electric shavers have been widely used abroad for treating diseases such as nasal, sinus, throat and bronchial surgeries, and have been proved to have good effects: (1) excellent control and accurate excision of soft tissue; (2) the surrounding tissue is protected because only the tissue in the hole can be cut and excised; (3) visibility is increased because blood and debris can be aspirated from the surgical field.

However, the existing planing tools still have certain problems, for example, under the condition that the operation range of the arthroscope type surgery is narrow, the straight planing tool is difficult to perform comprehensive cutting, and especially in some corner positions, the depth angle of the instrument is required to be changed to make an access incision again. The existing bending planing knife is usually a rigid outer tube, and the bending angle of the planing knife cannot be changed according to actual requirements, so that the planing knives with different bending specifications are required to be replaced when the position of a corner in an operation is cut, operation time is prolonged undoubtedly, and the operation cost of a patient is increased.

Therefore, how to realize that medical planing sword had both possessed the bendability, can guarantee planing sword's stability again simultaneously is the problem that needs to solve at present urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bendable medical planing knife, which can be used for adjusting the bending degree of a working end of the planing knife within a certain range according to the specific condition of a focus during operation, is convenient for operation, and avoids frequently replacing planing knives with different bending specifications, thereby simplifying the operation process and shortening the operation time.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a medical planing sword of flexible, including swing joint's outer planer tool and interior planer tool and with their electric connection's rotating device, outer planer tool is provided with hollow outer cutter pipe, and there is the sheath one side that outer cutter pipe is close to interior planer tool through threaded connection, and one side welding that interior planer tool was kept away from to outer cutter pipe has outer tool bit, and outer tool bit is provided with the outer blade of cavity, and outer cutter pipe internal fixation is provided with nonrust steel pipe, and nonrust steel pipe is close to outer tool bit department welding and has flexible snake bone pipe.

The beneficial effect who adopts above-mentioned scheme is: the utility model provides a novel bendable medical planing knife which is mainly used for cutting in medical operations. The outer planer tool and the inner planer tool are connected through the scabbard, the inner planer tool is inserted between the outer planer tool and the inner planer tool, the structure of the weapon is similar to a sword, and the scabbard is connected with the inner planer tool, so that a knife pipe structure is formed by a channel between the inner planer tool and the outer planer tool. The head ends of the inner planer tool and the outer planer tool are both provided with openings, the opening of the outer planer tool is provided with an outer tool bit, and the outer tool bit is provided with a hollow outer cutting edge for cutting. The inside fixed nonrust steel pipe of outer cutter pipe is promptly for fixed support channel, avoids subside and the fracture of planer tool structure, is provided with flexible snake bone pipe in outer tool bit department, when the outer cutter pipe of manual buckling, and flexible snake bone pipe can be buckled along with outer cutter pipe in step to furthest improves the regional stability of buckling of outer cutter pipe. The rotating device drives the inner planer tool to rotate inside the outer planer tool, and the cutting edge position can realize planing the tissue.

Furthermore, the inner planer tool is sequentially provided with a tool handle, an inner tool tube and an inner tool bit, the tool handle is movably connected with the end point of the outer tool tube, one end of the inner tool tube is fixedly connected with the tool handle, and the other end of the inner tool tube is welded with the inner tool bit.

The beneficial effect who adopts above-mentioned scheme is: the inner planer tool is also provided with an inner tool tube inside the outer planer tool and used for separating two channels, so that the inner planer tool and the outer planer tool form two isolated channels, and the inner planer tool structure can stretch freely in the outer planer tool structure.

Furthermore, the outer ends of the inner cutter heads are respectively provided with a hollow inner cutter edge, and the hollow inner cutter edges extend outwards and do not contact the hollow outer cutting edge.

The beneficial effect who adopts above-mentioned scheme is: the two structures of the hollow inner cutting edge and the hollow outer cutting edge are arranged inside and outside, so that the combined structure for cutting can be used as a combined structure, the pathological positions of the outer ring and the inner ring can be accurately cut off, the stretching condition of the hollow inner cutting edge and the stretching condition of the hollow outer cutting edge can be adjusted according to the actual operation condition, and the use is flexible.

Furthermore, an annular embedding groove is formed in the outer pipe wall of one end, close to the inner cutter head, of the inner cutter pipe, and the annular embedding groove is spiral.

The beneficial effect who adopts above-mentioned scheme is: the spiral annular embedding groove is arranged on the outer pipe wall of one end, close to the inner cutter head, of the inner cutter pipe, the inner cutter pipe can be bent at multiple angles, and is convenient to be matched with the outer cutter pipe, so that the inner cutter pipe is not broken when correspondingly bent along with the outer cutter pipe.

Furthermore, the inner knife pipe is movably arranged in the outer knife pipe through a knife sheath, and the rotating device comprises a stirring shaft arranged in the knife handle and can be connected with a driving motor.

The beneficial effect who adopts above-mentioned scheme is: the driving motor can drive the stirring shaft to rotate, the inner cutter tube connected between the cutter handle and the cutter handle can be driven to rotate, the hollow inner cutter edge is finally rotated, and the tissue is planed.

Furthermore, the outer cutter tube and the inner part of the outer cutter head are provided with communicated suction pipelines, and the tail ends of the suction pipelines are arranged at the end part of the cutter handle and are connected with a negative pressure device.

The beneficial effect who adopts above-mentioned scheme is: the negative pressure device can attract the chips, powder and the like generated in the cutting process, and the chips are collected and discharged from the attraction pipeline, so that the chips are prevented from being accumulated to shield the operation position, the chips can be prevented from blocking the outer cutter head and the inner cutter head, and the planing cutter can not continue to work.

Further, negative pressure device includes negative pressure pump, negative pressure valve and attracts the negative pressure head that negative pressure device one end was kept away from to the pipeline, and negative pressure head is inside to be provided with the sealing washer.

The beneficial effect who adopts above-mentioned scheme is: the negative pressure pump provides power for the negative pressure device, and the sealing ring can enable the powder and the debris to stably flow towards the inside of the suction pipeline by sucking the debris and the powder.

Furthermore, a shunt pipeline is arranged at the tail end of the suction pipeline.

The beneficial effect who adopts above-mentioned scheme is: the shunt pipe can discharge the powder and the debris sucked by the suction pipe, and can prevent gas from flowing back when the negative pressure device is closed.

In summary, the utility model has the following advantages:

1. the utility model can be used separately or simultaneously by arranging the inner planer tool and the outer planer tool double planer tool system, thereby increasing the selection requirements of different specifications in the operation process and leading the operation to be simpler and more convenient;

2. according to the utility model, the inner cutter tube and the outer cutter tube are arranged, so that the whole planing cutter is divided into two independent channels, a suction pipeline in the outer cutter tube and the inner cutter tube can be separated, and powder and debris generated in the suction process are prevented from blocking the rotation of the inner cutter tube;

3. according to the utility model, the annular embedding groove and the flexible snake bone pipe are arranged, so that stability and flexibility can be provided for the bending areas of the inner cutter pipe and the outer cutter pipe respectively, and multi-angle bending of double pipes can be realized.

Drawings

FIG. 1 is a schematic structural diagram of a straight state of the present invention;

FIG. 2 is a structural diagram illustrating a bent state of the present invention;

FIG. 3 is a schematic cross-sectional view of an outer cutter tube;

FIG. 4 is a schematic structural view of an inner planer tool;

wherein, 1, an outer planer tool; 2. an inner planer tool; 3. a sheath; 4. an outer cutter tube; 5. an outer cutter head; 6. a flexible snake bone tube; 7. a knife handle; 8. an inner cutter tube; 9. an inner cutter head; 10. a drive motor; 11. a negative pressure pump; 12. a suction duct; 13. a diversion pipeline; 14. a stirring shaft.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings.

In one embodiment of the present invention, as shown in fig. 1-4, a bendable medical planer tool is provided, which comprises an outer planer tool 1 and an inner planer tool 2 movably connected and a rotating device electrically connected to the outer planer tool 1 and the inner planer tool 2, wherein the outer planer tool 1 is provided with a hollow outer tool tube 4, one side of the outer tool tube 4 close to the inner planer tool 2 is connected with a tool sheath 3 through a screw thread, the tool sheath 3 is fixedly connected to the inner planer tool 2, so that the inner planer tool 2 is inserted into the outer planer tool 1 through the tool sheath 3, one side of the outer tool tube 4 far away from the inner planer tool 2 is welded with an outer tool bit 5, the outer tool bit 5 is provided with a hollow outer cutting edge, a stainless steel tube is fixedly arranged inside the outer tool tube 4, and a flexible snake bone tube 6 is welded on the stainless steel tube close to the outer tool bit 5. When the outer knife pipe 4 is manually bent, the flexible snake bone pipe 6 can be synchronously bent along with the outer knife pipe 4, and the stability of the bending area of the outer knife pipe 4 is improved to the maximum extent.

Wherein, interior planer tool 2 has set gradually handle of a knife 7, interior sword pipe 8 and interior tool bit 9, the extreme point swing joint of handle of a knife 7 and outer tool bit 4, 8 one ends of interior sword pipe and handle of a knife 7 fixed connection, the interior tool bit 8 other end and interior tool bit 9 welding. The outer end of the inner cutter head 9 is respectively provided with a hollow inner cutter edge, and the hollow inner cutter edge extends outwards and does not contact with the hollow outer cutter edge. The outer pipe wall of the inner knife pipe 8 close to one end of the inner knife head 9 is provided with an annular embedding groove, and the shape of the annular embedding groove is spiral. The inner knife pipe 8 is movably arranged in the outer knife pipe 4 through the knife sheath 3, the rotating device comprises a stirring shaft 14, and the stirring shaft 14 is arranged in the knife handle 7 and can be connected with a driving motor 10.

Wherein, the inner parts of the outer knife pipe 4 and the outer knife head 5 are provided with a communicated suction pipeline 12, the tail end of the suction pipeline 12 is arranged at the end part of the knife sheath 3, and is connected with a negative pressure device. The negative pressure device comprises a negative pressure pump 11, a negative pressure valve and a negative pressure head of which one end of the suction pipeline 12 is far away from the negative pressure device, and a sealing ring is arranged inside the negative pressure head. The end of the suction pipe 12 is also provided with a branch pipe 13.

The using method comprises the following steps: firstly, the whole bendable medical planing tool is assembled, the inner planing tool 2 is inserted into the outer planing tool 1 through the sheath 3, the inner tool bit 9 is rotated to a proper extending position according to the operation position to be matched with the outer tool bit 5, and the driving motor 10 is started to drive the inner tool bit 8 to rotate. And the flexible snake bone tube 6 is bent at the same time, so that multi-angle bending can be realized, and the tissue planing can be carried out on pathological positions in different ranges in real time.

While the present invention has been described in detail with reference to the illustrated embodiments, it should not be construed as limited to the scope of the present patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims

1. A bendable medical planing knife is characterized in that: outer planer tool (1) and interior planer tool (2) and with their electric connection's rotating device including swing joint, outer planer tool (1) is provided with hollow outer sword pipe (4), there is sheath (3) one side that outer sword pipe (4) are close to interior planer tool (2) through threaded connection, one side welding that interior planer tool (2) were kept away from in outer sword pipe (4) has outer tool bit (5), outer tool bit (5) are provided with the outer blade of cavity, outer sword pipe (4) inside is fixed and is provided with nonrust steel pipe, nonrust steel pipe is close to outer tool bit (5) department welding has flexible snake bone pipe (6).

2. The bendable medical planing tool of claim 1, wherein: interior planer tool (2) have set gradually handle of a knife (7), interior sword pipe (8) and interior tool bit (9), handle of a knife (7) with the extreme point swing joint of outer sword pipe (4), interior sword pipe (8) one end with handle of a knife (7) fixed connection, interior sword pipe (8) other end with interior tool bit (9) welding.

3. The bendable medical planing tool of claim 2, wherein: the outer end of the inner cutter head (9) is respectively provided with a hollow inner cutting edge, and the hollow inner cutting edge extends outwards and does not contact the hollow outer cutting edge.

4. The bendable medical planing tool of claim 2, wherein: an annular embedding groove is formed in the outer pipe wall of one end, close to the inner cutter head (9), of the inner cutter pipe (8), and the annular embedding groove is spiral.

5. The bendable medical planing tool of claim 2, wherein: the inner knife pipe (8) is movably arranged in the outer knife pipe (4) through the knife sheath (3), the rotating device comprises a stirring shaft (14), and the stirring shaft (14) is arranged in the knife handle (7) and can be connected with a driving motor (10).

6. The bendable medical planing tool of claim 1, wherein: the outer knife tube (4) and the outer knife head (5) are internally provided with communicated suction pipelines (12), and the tail ends of the suction pipelines (12) are arranged at the end parts of the knife sheath (3) and are connected with a negative pressure device.

7. The bendable medical planing tool of claim 6, wherein: the negative pressure device comprises a negative pressure pump (11), a negative pressure valve and a suction pipeline (12) and is far away from a negative pressure head at one end of the negative pressure device, and a sealing ring is arranged inside the negative pressure head.

8. The bendable medical planing tool of claim 6, wherein: the tail end of the suction pipeline (12) is also provided with a shunt pipeline (13).