CN215584281U

CN215584281U - Medical planing tool bit convenient for adjusting bending angle

Info

Publication number: CN215584281U
Application number: CN202121477041.1U
Authority: CN
Inventors: 郭毅军; 张宇
Original assignee: Chongqing Xishan Science and Technology Co Ltd
Current assignee: Chongqing Xishan Science and Technology Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-21
Anticipated expiration: 2031-06-29

Abstract

The utility model provides a medical planing tool bit convenient for adjusting a bending angle, which comprises an outer tool tube and an inner tool tube, wherein the inner tool tube is sleeved in the outer tool tube in a rotating manner around the axis of the inner tool tube; the inner cutter tube is provided with a second bending section corresponding to the first bending section, and the second bending section is a hose capable of transmitting torque and can be bent along with the deformation of the first bending section. The utility model can manually adjust the bending angle of the planing tool bit according to the operation requirement, can meet the requirement of the prior operation type on the angle of the planing tool bit, can effectively solve the problem that one operation needs a plurality of planing tool bits with different angles, improves the universality of the cutter, and greatly lightens the economic burden of a patient.

Description

Medical planing tool bit convenient for adjusting bending angle

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a medical planing tool bit convenient for adjusting a bending angle.

Background

A medical planing tool is a surgical instrument for performing a planing process on biological bone and/or soft tissue. The planing tool bit comprises a rotatable inner tool assembly and a fixed outer tool assembly, and tissues are cut through the relative movement of the inner tool bit and the outer tool bit in the process that a power mechanism drives the inner tool assembly to rotate relative to the outer tool assembly; to accommodate complex body passageways and surgical angles, bendable planing bits have emerged. At present, bendable planing tool bit at home and abroad, once the outer cutter pipe is bent, the bending angle of the whole planing tool bit is fixed, and in some surgical operations, such as ear-nose-throat operations, because the natural channels of the human nasal cavity and the throat are complex, one operation needs a plurality of angles to operate, but because the bending angle of each planing tool bit is fixed, one operation needs a plurality of bending angle planing tool bits with different bending angles, thereby increasing the economic burden of patients and causing unnecessary waste.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned disadvantages of the prior art, the present invention provides a medical planing tool bit with a bending angle that can be easily adjusted, and the medical planing tool bit has the advantages of improved versatility and reduced use cost.

In order to achieve the above and other related objects, the present invention provides a medical planing tool bit with a bending angle convenient to adjust, including an outer tool tube and an inner tool tube rotatably sleeved in the outer tool tube around its own axis, wherein the outer tool tube is connected to the front end of the outer tool tube, the inner tool bit is connected to the front end of the inner tool tube, the outer tool tube has a first bending section, and the first bending section is a flexible structure; the inner cutter tube is provided with a second bending section corresponding to the first bending section, and the second bending section is a hose capable of transmitting torque and can be bent along with the deformation of the first bending section.

Optionally, the first bending section may be bent in two opposite directions, and a plurality of circumferential grooves are respectively formed in two sides of the first bending section, which correspond to the bending direction, at intervals along the axial direction of the outer cutter tube.

Optionally, the circumferential grooves are arranged in parallel with each other and perpendicular to the axial direction of the outer cutter tube.

Optionally, the circumferential groove on one side of the first bending section and the circumferential groove on the other side of the first bending section are staggered from each other in the axial direction of the outer cutter tube.

Optionally, the first curved section is made of metal and the circumferential groove is formed by wire cutting or laser cutting machining of the outer cutter tube.

Optionally, the depth of the circumferential groove in the radial direction of the outer cutter tube is smaller than the radius of the outer cutter tube.

Optionally, the hose is a helical spring tube structure formed by helical coiling.

Optionally, the first curved section has a curved angle in the range of-120 ° to 120 °.

Optionally, a sealing sleeve is sleeved outside the first bending section of the outer cutter tube.

Optionally, the sealing sleeve is a heat shrink sleeve.

As described above, the present invention has the following advantageous effects: the first bending section of the outer cutter tube is set to be a flexible structure, the bending direction and angle can be adjusted through external force, and the state is kept, and the second bending section of the inner cutter tube can move along with the first bending section; thereby can realize the change of whole tool bit orientation and bend angle as required manual regulation first crooked section, multiple angle just can be adjusted to single cutter, adapts to the demand of different bend angles in the operation process, has improved the commonality of cutter, reduces patient's cost.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a cross-sectional view of a bend in one embodiment;

FIG. 3 is a cross-sectional view of a bend in the outer blade tube in one embodiment;

FIG. 4 is a partial view of FIG. 3;

FIG. 5 is a schematic diagram of a second bend segment in one embodiment;

FIG. 6 is a schematic diagram of a second bend segment in one embodiment.

Part number description:

1-outer knife pipe; 11-a first curved section; 12-a circumferential groove; 12 a-upper circumferential groove; 12 b-lower circumferential groove; 2-an outer cutter head; 3-inner knife pipe; 31-a second curved section; 4-inner cutter head; and 5, sealing the sleeve.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

In this embodiment, the side facing the patient when the planing tool bit is in operation is the front side, and the side facing away from the patient is the rear side.

Examples

As shown in fig. 1-4, the medical planing tool bit convenient for adjusting the bending angle in this embodiment includes an outer tool tube 1 and an inner tool tube 3, the inner tool tube 3 is rotatably sleeved in the outer tool tube 1 around its axis, the outer tool bit 2 is connected to the front end of the outer tool tube 1, the inner tool bit 4 is connected to the front end of the inner tool tube 3, and certainly includes handle connectors connected to the rear ends of the inner tool tube 3 and the outer tool tube 1, the rear end of the inner tool tube 3 is connected to power to drive the inner tool bit 4 to rotate in one direction or in a reciprocating manner through the inner tool tube 3, and the inner tool bit 2 rotates to plane tissues; wherein, the outer knife pipe 1 has a first bending section 11, the first bending section 11 is a flexible structure, can change the bending direction and/or the bending angle under the action of external force (such as a tool or manual operation), and keeps the bending angle after the external force is removed; the inner cutter tube 3 is provided with a second bending section 31 corresponding to the first bending section 11, the second bending section 31 is a hose capable of transmitting torque, and can be bent along with the deformation of the first bending section 11, namely, the first bending section 11 of the outer cutter tube 1 is manually bent, and the bending direction and the angle of the whole cutter head can be changed.

The first bending section 11 of the outer cutter tube 1 is arranged into a flexible structure, the bending direction and angle can be adjusted through external force, and the state is kept, because the second bending section 31 of the inner cutter tube 3 can act along with the first bending section 11; therefore, the bending direction and angle of the first bending section 11 can be manually adjusted according to needs, the change of the orientation and bending angle of the whole cutter head is realized, a single cutter can adjust various angles, the requirements of different bending angles in the operation process are met, and stepless adjustment can be realized; improves the universality of the cutter and reduces the cost of patients.

In some embodiments, the bending direction of the first bending section 11 may be any direction.

In this example, for convenience of processing, the first bending section 11 is bent in two opposite directions, as shown in fig. 1, the first bending section is bent in the up-down direction indicated by arrows in the drawing, as shown in fig. 3 and 4, two sides of the first bending section 11 corresponding to the bending direction are respectively provided with a plurality of circumferential grooves 12 at intervals along the length direction of the outer cutter tube 1, that is, in the drawing, the upper side of the first bending section 11 is provided with a group of circumferential grooves 12, the lower side is provided with a group of circumferential grooves 12, and the side where the circumferential grooves 12 are located is the side where the bending direction is located. The circumferential grooves 12 on both sides facilitate the first bending section 11 to extend or contract along the length direction when bending, and contract on the inner side and extend on the outer side in the bending direction.

In some embodiments, the first curved section 11 may be curved in a single direction, but the angle of curvature may vary.

The first curved section 11 is made of metal, for example stainless steel, and the circumferential groove 12 is formed by wire cutting or laser cutting machining of the outer cutter tube 1. Utilize the outer sword pipe 1 of the manual bending of rigid deformation of the stainless steel pipe that outer sword pipe 1 adopted, combine the second bending segment 31 of the interior sword pipe 3 of angle of bending at will simultaneously, realize whole planing tool bit front end angle bending control, can manually exert the outer sword pipe 1 of external force bending of different dynamics according to the operation needs, and then make the planing tool bit reach the bending angle of needs. Due to the rigidity of the stainless steel pipe, the outer cutter pipe 1 can be kept at the angle for a long time when no external force is applied, the function of supporting and protecting the inner cutter pipe 3 and the inner cutter head 4 to run at high speed is achieved, and manual bending can be carried out for multiple times.

And can also be bent in the opposite direction shown in figure 1, thereby realizing the stepless angle adjustment between-120 degrees and 120 degrees of the planing tool bit. The required angles are different, and the unfolding length of the bending part of the outer cutter tube 1, the number, the width, the depth and the interval of the circumferential grooves 12 and the unfolding length of the second bending section 31 of the inner cutter tube 3 are different.

In one embodiment, the circumferential groove 12 on one side and the circumferential groove 12 on the other side of the first bending section 11 are staggered from each other in the axial direction of the outer cutter tube 1, as shown in fig. 4, wherein the upper circumferential groove 12a and the lower circumferential groove 12b of the first bending section 11 are staggered from each other in the axial direction of the outer cutter tube 1; to facilitate the bending operation and to ensure the strength of the first bending section 11.

In this example, the circumferential grooves 12 are parallel to each other and perpendicular to the length direction of the outer cutter tube 1, and the depth of the circumferential grooves 12 along the radial direction of the outer cutter tube 1 is smaller than the radius of the outer cutter tube 1, so as to ensure the strength and rigidity thereof and facilitate the maintenance at a specified angle. Of course, in other embodiments, the depth of the circumferential groove 12 in the radial direction of the outer cutter tube 1 may be greater than or equal to the radius of the outer cutter tube 1 while ensuring the strength.

In one embodiment, the first bending section 11 of the outer cutter tube 1 is sleeved with a sealing sleeve 5 to prevent the leakage of the cooling liquid between the inner cutter tube 3 and the outer cutter tube 1 during the operation. In this example, the sealing sleeve 5 is a heat shrinkable sleeve, and by utilizing the characteristic that the heat shrinkable tube shrinks and deforms at high temperature, at normal temperature, the inner diameter of the heat shrinkable tube is larger than the outer diameter of the outer knife pipe 1, and after the heat shrinkable tube is sleeved on the proper position of the outer knife pipe 1, the heat shrinkable tube is heated at high temperature by a hot air gun to shrink and deform, so that the inner diameter of the heat shrinkable tube is reduced and tightly attached to the outer knife pipe 1, and the sealing of the circumferential groove 12 is realized; when the heat shrinkable tube is bent, the outer side is stretched and the inner side is shrunk.

In some embodiments, the hose is a spiral spring tube structure formed by spirally winding, can be bent at any angle in any direction, and can be rebounded and reset; as shown in fig. 5, the hose is formed by laser cutting the inner cutter tube 3, and the path of the laser cutting is spiral, so that the hose is in a linear spiral tube structure, or is formed by spirally winding a spring plate; in another embodiment, the hose is a spiral spring pipe group consisting of two to three layers of spiral spring pipes which are sequentially sleeved, and the spiral spring pipes are spirally wound by spring plates to form a linear spiral pipe structure. In another embodiment, the flexible tube is a spiral spring tube formed by spirally winding a spring plate, the spiral line at two edges of the spring plate is a rectangular or inverted trapezoidal relief line which is mutually embedded after being wound, and the flexible tube can also be processed and formed on the inner knife tube 3 by adopting a laser cutting mode, as shown in fig. 6. Other prior art torque transmitting and flexing hose configurations may be used.

This embodiment, can be according to the operation needs, the required bent angle of planing tool bit of manual regulation, can satisfy the demand of known operation kind to planing tool bit angle among the present otolaryngology operation, can effectively solve the problem that an operation needs many planing tool bits among the prior art, improves the commonality of cutter, great burden on lightening patient's economy, it is extravagant to reduce unnecessary.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can 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

1. The utility model provides a medical planing tool bit convenient to adjust bend angle, include outer sword pipe and can rotate ground endotheca around self axis in the interior sword pipe of outer sword pipe, outer sword pipe front end is connected with outer tool bit, interior sword pipe front end is connected with interior tool bit, its characterized in that: the outer cutter tube is provided with a first bending section which is of a flexible structure; the inner cutter tube is provided with a second bending section corresponding to the first bending section, and the second bending section is a hose capable of transmitting torque and can be bent along with the deformation of the first bending section.

2. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 1, wherein: the first bending section can be bent towards two opposite directions, and a plurality of circumferential grooves are formed in the two sides, corresponding to the bending direction, of the first bending section at intervals along the axial direction.

3. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 2, wherein: the circumferential grooves are arranged in parallel and are perpendicular to the axial direction of the outer cutter tube.

4. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 2, wherein: the circumferential groove on one side of the first bending section and the circumferential groove on the other side of the first bending section are staggered in the axial direction of the outer cutter tube.

5. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 2, wherein: the first bending section is made of metal, and the circumferential groove is formed by machining the outer cutter pipe through wire cutting or laser cutting.

6. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 2, wherein: the depth of the circumferential groove along the radial direction of the outer cutter pipe is smaller than the radius of the outer cutter pipe.

7. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 1, wherein: the hose is a spiral spring tube structure formed by spirally winding.

8. The medical planing tool head for facilitating adjustment of the angle of flexion as set forth in claim 1, wherein: the bending angle of the first bending section ranges from-120 degrees to 120 degrees.

9. The medical planing tool head for facilitating adjustment of the angle of flexion according to any of the claims 1 to 8, wherein: and a sealing sleeve is sleeved outside the first bending section of the outer cutter tube.

10. The medical planing tool head for facilitating adjustment of a bend angle of claim 9, wherein: the sealing sleeve is a heat-shrinkable sleeve.