阅读说明：本技术 一种多功能医疗刀 (Multifunctional medical knife ) 是由 张玉莲 张晨 于 2021-08-19 设计创作，主要内容包括：本发明提供了一种多功能医疗刀,属于医疗设备技术领域。本发明包括手柄、滑杆、伸缩机构、半球面体和切除机构,所述手柄内沿长度方向设有安装腔,所述安装腔的一端贯穿手柄的右侧面,所述滑杆滑动设置在安装腔内,所述滑杆的一端伸出手柄的右侧面且端部设有第一扇形球面体,所述伸缩机构能够带动滑杆沿着安装腔的长度方向来回滑动,所述半球面体的两端通过两个第二转轴转动设置在第一扇形球面体两端的内侧,所述第一扇形球面体一端的外侧固设有第一电机,所述第一电机与其中一个第二转轴传动连接,所述切除机构能够切除半球面体开口前方的物体。本发明能够根据患者的切除位置调节长度和改变方向,提高切除效率。(The invention provides a multifunctional medical knife, and belongs to the technical field of medical equipment. The novel electric cutting machine comprises a handle, a sliding rod, a telescopic mechanism, a semispherical body and a cutting mechanism, wherein an installation cavity is formed in the handle along the length direction, one end of the installation cavity penetrates through the right side face of the handle, the sliding rod is arranged in the installation cavity in a sliding mode, one end of the sliding rod extends out of the right side face of the handle, a first fan-shaped spherical body is arranged at the end portion of the sliding rod, the telescopic mechanism can drive the sliding rod to slide back and forth along the length direction of the installation cavity, the two ends of the semispherical body are rotatably arranged on the inner sides of the two ends of the first fan-shaped spherical body through two second rotating shafts, a first motor is fixedly arranged on the outer side of one end of the first fan-shaped spherical body and is in transmission connection with one of the second rotating shafts, and the cutting mechanism can cut an object in front of an opening of the semispherical body. The invention can adjust the length and change the direction according to the cutting position of a patient, thereby improving the cutting efficiency.)

1. The multifunctional medical knife is characterized by comprising a handle (1), wherein a mounting cavity (11) is formed in the handle (1) along the length direction, and one end of the mounting cavity (11) penetrates through the right side face of the handle (1);

the sliding rod (2) is arranged in the mounting cavity (11) in a sliding mode, one end of the sliding rod (2) extends out of the right side face of the handle (1), and a first fan-shaped spherical body (3) is arranged at the end portion of the sliding rod;

the telescopic mechanism is arranged in the mounting cavity (11) and can drive the sliding rod (2) to slide back and forth along the length direction of the mounting cavity (11);

the two opposite ends of the semispherical surface body (4) are rotatably arranged on the inner sides of the two ends of the first fan-shaped spherical surface body (3) through two second rotating shafts (41), a first motor (33) is fixedly arranged on the outer side of one end of the first fan-shaped spherical surface body (3), and the first motor (33) is in transmission connection with one of the second rotating shafts (41);

the cutting mechanism is arranged in the hemispherical body (4), and can cut off foreign matters in front of the opening of the hemispherical body (4).

2. The multifunctional medical knife of claim 1, wherein the telescoping mechanism comprises:

the first sliding block (21), a first sliding groove (111) is formed in one side face of the installation cavity (11) along the length direction, the first sliding block (21) is arranged on the side face of the sliding rod (2), and the first sliding rod (21) is arranged in the first sliding groove (111) in a sliding mode;

the rack (22), the said rack (22) is fixed on the upper side of the slide bar (2) along the length direction;

first pivot (131), perforation (13) have been seted up to the side of going up of handle (1), first pivot (131) horizontal rotation sets up in perforation (13), rubber gear (132) have set firmly on first pivot (131), rubber gear (132) and rack (22) meshing connection.

3. The multifunctional medical knife of claim 2, wherein the cutting mechanism comprises:

the cutting tool comprises a second sector-shaped spherical body (5) and a third sector-shaped spherical body (6), wherein two ends of the second sector-shaped spherical body (5) and two ends of the third sector-shaped spherical body (6) are coaxially hinged on the inner side wall of the semispherical body (4), the radius of the third sector-shaped spherical body (6) is smaller than that of the second sector-shaped spherical body (5), and the opposite side edges of the second sector-shaped spherical body (5) and the third sector-shaped spherical body (6) are respectively provided with a first blade (51) and a second blade (61);

the first driving structure is arranged on the semispherical surface body (4) and can drive the second fan-shaped spherical surface body (5) to rotate;

and the second driving structure is arranged on the semispherical surface body (4), and can drive the third sector spherical surface body (6) to rotate.

4. The multifunctional medical knife of claim 3, wherein the first drive structure comprises:

the third rotating shaft (71) is rotatably arranged on the inner side wall of the semispherical body (4), the axis of the third rotating shaft (71) and the axis of the second rotating shaft (41) are positioned in the same plane and are perpendicular to each other, one end of the second sector-shaped spherical body (5) is fixedly connected with the third rotating shaft (71), and one end of the third sector-shaped spherical body (6) is rotatably arranged on the third rotating shaft (71);

the second motor (7), the second motor (7) sets firmly on the lateral surface of semi-spherical body (4), second motor (7) and third pivot (71) transmission are connected.

5. The multifunctional medical knife of claim 4, wherein the second drive structure comprises:

the fourth rotating shaft (81) is rotatably arranged on the inner side wall of the semispherical body (4), the fourth rotating shaft (81) and the third rotating shaft (71) are coaxial, the other end of the third sector-shaped spherical body (6) is fixedly connected with the fourth rotating shaft (81), and the other end of the second sector-shaped spherical body (5) is rotatably arranged on the fourth rotating shaft (81);

and the third motor (8), the third motor (8) is fixedly arranged on the outer side surface of the semispherical body (4), and the third motor (8) is in transmission connection with the fourth rotating shaft (81).

6. The multifunctional medical knife according to claim 5, characterized in that two support plates (31) are fixedly arranged at the bottom of the first fan-shaped spherical body (3) in parallel, a fixed shaft (32) is horizontally connected between the two support plates (31), the end of the sliding rod (2) extending out of the handle (1) is rotatably arranged on the fixed shaft (32), the axial direction of the fixed shaft (32) is parallel to the axial direction of the third rotating shaft (71), and a fixing mechanism is arranged on the sliding rod (2) and can fix the first fan-shaped spherical body (3) at the current position when the first fan-shaped spherical body (3) rotates around the fixed shaft (32).

7. The multifunctional medical knife of claim 6, wherein the limiting mechanism comprises:

the supporting plate (31) is far away from the first sector spherical body (3) and is semicircular, and the second notched grooves (311) are formed in the semicircular edge of the supporting plate (31) along the circumferential direction;

the handle (1) is provided with a first gap groove (14) at one end close to the fixed shaft (32) along the length direction, the first gap groove (14) is internally provided with a limiting plate (244) in a sliding manner, at least one position is formed, and one side edge of the limiting plate (244) close to the fixed shaft (32) can extend into one second gap groove (311);

the third driving structure is arranged on the sliding rod (2), and the third driving structure can drive the limiting plate (244) to slide along the first notch groove (14).

8. The multifunctional medical knife of claim 7, wherein the third drive structure comprises:

the second sliding groove (23) is formed in one side face, close to the first notch groove (14), of the sliding rod (2);

the second sliding block (24) is arranged in the second sliding groove (23) in a sliding mode, and a limiting plate (244) extending into the mounting cavity (11) is fixedly arranged on the second sliding block (24);

one end of the second return spring (243) is fixedly connected to the left end of the second sliding chute (23), the other end of the second return spring (243) is fixedly connected to the left end of the second sliding block (24), and when one side edge of the limiting plate (244) is inserted into one of the second notch grooves (311), the second return spring (243) is in a pressing state;

the pushing structure is arranged in the second sliding groove (23) and can push the second sliding block (24) to move leftwards.

9. The multifunctional medical knife of claim 8, wherein the pushing structure comprises:

the telescopic air bag (245), the telescopic air bag (245) is fixedly arranged between the right end of the second sliding block (24) and the right side surface of the second sliding chute (23);

elasticity gasbag (121), the side of going up of handle (1) is equipped with blind hole (12), elasticity gasbag (121) set firmly in blind hole (12), the side of going up of handle (1) is stretched out to the upper end of elasticity gasbag (121), elasticity gasbag (121) are linked together through hose and flexible gasbag (245), vertically be equipped with first reset spring (122) in elasticity gasbag (121).

Technical Field

The invention belongs to the technical field of medical equipment, and relates to a multifunctional medical knife.

Background

With the continuous progress of science, various medical instruments are continuously emerged, and clinical medical knives are important instruments in the medical process and help doctors to cut off the cortex and redundant tissues of patients.

The existing medical knife has a single structure, only comprises the blade and the knife handle, and the length of the knife handle is fixed, so that the medical knife needs to be frequently replaced in the operation process, the operation time is prolonged, and the operation risk is increased; in addition, after the internal foreign matter of excision, need take out the foreign matter that cuts alone, waste time and energy, the foreign matter is left over easily in addition at the patient internal, causes the infection, is unfavorable for the quick recovery of patient.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a multifunctional medical knife which can adjust the length and change the direction according to the cutting position of a patient and improve the cutting efficiency.

The purpose of the invention can be realized by the following technical scheme:

a multifunctional medical knife comprises a handle, wherein an installation cavity is arranged in the handle along the length direction, and one end of the installation cavity penetrates through the right side face of the handle;

the sliding rod is arranged in the mounting cavity in a sliding mode, one end of the sliding rod extends out of the right side face of the handle, and a first fan-shaped spherical body is arranged at the end of the sliding rod;

the telescopic mechanism is arranged in the mounting cavity and can drive the sliding rod to slide back and forth along the length direction of the mounting cavity;

the two opposite ends of the semispherical surface body are respectively and rotatably arranged on the inner sides of the two ends of the first fan-shaped spherical surface body through two second rotating shafts, a first motor is fixedly arranged on the outer side of one end of the first fan-shaped spherical surface body, and the first motor is in transmission connection with one of the second rotating shafts;

the cutting mechanism is arranged in the hemispherical body and can cut off foreign matters in front of the opening of the hemispherical body.

In the above-described multifunctional medical knife, the telescopic mechanism includes:

the first sliding block is arranged on the side surface of the sliding rod and is arranged in the first sliding groove in a sliding manner;

the rack is fixedly arranged on the upper side surface of the sliding rod along the length direction;

the handle is characterized in that the handle comprises a first rotating shaft, a through hole is formed in the upper side face of the handle, the first rotating shaft is horizontally and rotatably arranged in the through hole, a rubber gear is fixedly arranged on the first rotating shaft, and the rubber gear is meshed with the rack.

In the above-described multifunctional medical knife, the cutting mechanism includes:

the two ends of the second sector-shaped spherical surface body and the two ends of the third sector-shaped spherical surface body are coaxially hinged on the inner side wall of the semispherical surface body, the radius of the third sector-shaped spherical surface body is smaller than that of the second sector-shaped spherical surface body, and the opposite side edges of the second sector-shaped spherical surface body and the third sector-shaped spherical surface body are respectively provided with a first blade and a second blade;

the first driving structure is arranged on the semispherical surface body and can drive the second fan-shaped spherical surface body to rotate;

and the second driving structure is arranged on the semispherical surface body and can drive the third sector spherical surface body to rotate.

In the above-described multifunctional medical knife, the first driving structure includes:

the third rotating shaft is rotatably arranged on the inner side wall of the semispherical body, the axis of the third rotating shaft and the axis of the second rotating shaft are positioned in the same plane and are perpendicular to each other, one end of the second sector-shaped spherical body is fixedly connected with the third rotating shaft, and one end of the third sector-shaped spherical body is rotatably arranged on the third rotating shaft;

and the second motor is fixedly arranged on the outer side surface of the hemispherical body and is in transmission connection with the third rotating shaft.

In the above multifunctional medical knife, the second driving structure comprises:

the fourth rotating shaft is rotatably arranged on the inner side wall of the semispherical body, the fourth rotating shaft and the third rotating shaft are coaxial, the other end of the third sector-shaped spherical body is fixedly connected with the fourth rotating shaft, and the other end of the second sector-shaped spherical body is rotatably arranged on the fourth rotating shaft;

and the third motor is fixedly arranged on the outer side surface of the hemispherical body and is in transmission connection with the fourth rotating shaft.

In foretell a multi-functional medical knife, the bottom parallel of first fan-shaped sphere has set firmly two backup pads, two the level has linked firmly the fixed axle between the backup pad, the tip that the slide bar stretches out the handle rotates and sets up on the fixed axle, the axial of fixed axle and the axial direction parallel of third pivot, be equipped with fixed establishment on the slide bar, when first fan-shaped sphere rotates round the fixed axle, fixed establishment can fix first fan-shaped sphere at the current position.

In the above multifunctional medical knife, the limiting mechanism comprises:

one support plate is far away from the first sector spherical body and is semicircular, and the second notch grooves are formed in the semicircular edge of the support plate along the circumferential direction;

the handle is provided with a first notch groove along the length direction, one end of the handle close to the fixed shaft is provided with a limiting plate in a sliding mode, at least one position is arranged in the first notch groove, and one side edge of the limiting plate close to the fixed shaft can extend into one of the second notch grooves;

and the third driving structure is arranged on the sliding rod and can drive the limiting plate to slide along the first notch groove.

In the above-described multifunctional medical knife, the third driving structure includes:

the second sliding groove is formed in one side face, close to the first notch groove, of the sliding rod;

the second sliding block is arranged in the second sliding groove in a sliding mode, and the limiting plate extending into the mounting cavity is fixedly arranged on the second sliding block;

one end of the second reset spring is fixedly connected to the left end of the second sliding chute, the other end of the second reset spring is fixedly connected to the left end of the second sliding block, and when one side edge of the limiting plate is inserted into one of the second notch grooves, the second reset spring is in a pressing state;

and the pushing structure is arranged in the second sliding groove and can push the second sliding block to move leftwards.

In the above multifunctional medical knife, the pushing structure comprises:

the telescopic air bag is fixedly arranged between the right end of the second sliding block and the right side face of the second sliding chute;

the elastic airbag is provided with a blind hole in the upper side face of the handle, the elastic airbag is fixedly arranged in the blind hole, the upper end of the elastic airbag extends out of the upper side face of the handle, the elastic airbag is communicated with the telescopic airbag through a hose, and a first reset spring is vertically arranged in the elastic airbag.

Compared with the prior art, the invention has the following advantages:

1. according to the cutting position of foreign matters in a patient body, the position of the sliding rod is adjusted through the telescopic mechanism, so that the first fan-shaped spherical body extends to the position close to the cutting position, the trouble of frequently replacing a medical knife is avoided, when the cutting position space is narrow, the direction of the cutting mechanism in the hemispherical body can be rotated through the first motor, the cutting mechanism can be opposite to the foreign matters, the foreign matters can be conveniently and quickly cut, meanwhile, the cut foreign matters fall into the hemispherical body, and the medical knife can be directly taken out, so that the trouble of taking out the foreign matters is omitted, the operation time is shortened, the operation efficiency is improved, and the operation is safe and reliable;

2. when the position of the foreign matter is deep, the rubber gear is rotated by the thumb of the knife holder to push the rack and the sliding rod to extend out of the mounting cavity, so that the cutting mechanism on the hemispherical body is gradually close to the cutting position, the trouble of replacing a medical knife is avoided, and the operation efficiency is improved; in addition, the first sliding groove can limit the sliding range of the first sliding block, so that the sliding rod is prevented from sliding out of the mounting cavity;

3. the second sector spherical body and the third sector spherical body are in an open state in an initial state, when the hemispherical body is close to a foreign matter to be cut, the first driving structure and the second driving structure drive the second sector spherical body and the third sector spherical body to rotate oppositely, the foreign matter is cut off by the first blade and the second blade, the cut foreign matter is wrapped among the second sector spherical body, the third sector spherical body and the hemispherical body, the foreign matter leaves a cutting position along with a medical knife, the foreign matter is prevented from being left in a patient body, and infection is avoided, and the medical knife is simple and practical;

4. one end of the second sector spherical surface body is fixedly connected with the third rotating shaft, and the second motor is started to drive the third rotating shaft to rotate and the second sector spherical surface body to rotate, so that the first blade on the second sector spherical surface body is gradually close to the second blade of the third sector spherical surface body, and foreign matters are cut off; in addition, one end of the third sector spherical surface body is rotatably arranged on the third rotating shaft, so that when the third rotating shaft rotates, the third sector spherical surface body cannot rotate along with the third sector spherical surface body, the second sector spherical surface body and the third sector spherical surface body cannot synchronously rotate, and the foreign matters are ensured to be normally cut off;

5. the other end of the third sector spherical surface body is fixedly connected with the fourth rotating shaft, and the third motor is started to drive the fourth rotating shaft to rotate and the third sector spherical surface body to rotate, so that the second blade on the third sector spherical surface body is gradually close to the first blade of the second sector spherical surface body, and the foreign matters are cut off; in addition, because the other end of the second sector-shaped spherical surface body is rotatably arranged on the fourth rotating shaft, when the fourth rotating shaft rotates, the second sector-shaped spherical surface body cannot rotate along with the fourth rotating shaft, so that the third sector-shaped spherical surface body and the second sector-shaped spherical surface body cannot synchronously rotate, and the foreign matters can be normally cut off;

6. when the foreign matter position is in a narrow space and the semi-spherical surface is not right, the first fan-shaped spherical surface body can be rotated to ensure that the semi-spherical surface body is right opposite to the foreign matter, and then the first fan-shaped spherical surface body is fixed at the current position through the fixing mechanism, so that the first fan-shaped spherical surface body is prevented from rotating to influence the cutting work;

7. in an initial state, one side edge of the limiting plate close to the fixed shaft extends into one of the second notch grooves to fix the first fan-shaped spherical body at the current position, when the angle of the first fan-shaped spherical body needs to be changed, the third driving structure drives the limiting plate to slide towards the left end of the first notch groove to enable the limiting plate to be far away from the second notch groove, at the moment, the angle of the first fan-shaped spherical body can be rotated as required, the third driving structure drives the limiting plate to slide towards the right end of the first notch groove again to enable the limiting plate to be inserted into one of the second notch grooves again, the first fan-shaped spherical body is fixed, and the operation is simple;

8. in an initial state, under the action of a second reset spring, the second slide block is close to the right end of the second sliding groove, and at the moment, a limiting plate on the second slide block is inserted into one of the second notch grooves;

9. initial state, the interior gas of elasticity gasbag is more, gas in the flexible gasbag is less, when the operator uses the thumb to press the elasticity gasbag, extrude the gas in the elasticity gasbag to flexible gasbag in, make flexible gasbag inflation extension, promote the second slider and slide to the left end of second spout, make the limiting plate leave second breach groove, the backup pad and the rotation of first fan-shaped spherical body of being convenient for, when the operator releases the elasticity gasbag, under second reset spring's effect, the flexible gasbag of second slider extrusion, extrude the flexible gasbag in the flexible gasbag to the elasticity gasbag in, simultaneously under first reset spring's effect, make the elasticity gasbag resume to initial state fast, moreover, the steam generator is simple in structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

FIG. 5 is an enlarged view of a portion of FIG. 2 at D;

FIG. 6 is an enlarged view of a portion of FIG. 2 at E;

fig. 7 is a schematic structural view of the first sector-shaped spherical body during rotation.

In the figure, 1, a handle; 11. a mounting cavity; 111. a first chute; 12. blind holes; 121. an elastic air bag; 122. a first return spring; 13. perforating; 131. a first rotating shaft; 132. a rubber gear; 14. a first notch groove; 2. a slide bar; 21. a first slider; 22. a rack; 23. a second chute; 24. a second slider; 241. a third chute; 242. a third slider; 243. a second return spring; 244. a limiting plate; 245. a telescopic air bag; 3. a first sector-shaped spherical body; 31. a support plate; 311. a second notch groove; 32. a fixed shaft; 33. a first motor; 4. a semi-spherical body; 41. a second rotating shaft; 5. a second sector-shaped spherical body; 51. a first blade; 6. a third sector spherical surface body; 61. a second blade; 7. a second motor; 71. a third rotating shaft; 8. a third motor; 81. and a fourth rotating shaft.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 7, a multifunctional medical knife comprises a handle 1, a slide bar 2, a telescopic mechanism, a hemispherical body 4 and a cutting mechanism.

Be equipped with installation cavity 11 along length direction in the handle 1, the right side face of handle 1 is run through to the one end of installation cavity 11, preferably, the cross section of handle 1 is circular, the cross section of installation cavity 11 is the rectangle.

The slide bar 2 is arranged in the mounting cavity 11 in a sliding mode, one end of the slide bar 2 extends out of the right side face of the handle 1, and the end portion of the slide bar 2 is provided with a first fan-shaped spherical body 3.

The telescopic mechanism is arranged in the installation cavity 11 and can drive the sliding rod 2 to slide back and forth along the length direction of the installation cavity 11.

Two opposite ends of the semispherical body 4 are rotatably arranged at the inner sides of two ends of the first fan-shaped spherical body 3 through two second rotating shafts 41 respectively, the outer side of one end of the first fan-shaped spherical body 3 is fixedly provided with the first motor 33, one of the second rotating shafts 41 extends out of the first fan-shaped spherical body 3, and the end part of the second rotating shaft is fixedly connected with an output shaft of the first motor 33.

The cutting mechanism is arranged in the hemispherical body 4 and can cut off foreign matters in front of the opening of the hemispherical body 4.

According to the internal foreign matter position of patient, adjust the position of slide bar 2 through telescopic machanism, make 3 bodies of first fan-shaped sphere stretch into near foreign matter position, the trouble of frequently changing the medical knife has been removed from, when excision position space is narrow and small, can rotate the direction of removing the mechanism in the hemispherical body 4 through first motor 33, make excision mechanism can just to the foreign matter, be convenient for excise the foreign matter fast, the foreign matter of excision falls into in the hemispherical body 4 simultaneously, it can directly take out the medical knife, the trouble of getting the foreign matter is saved, the operating time has been shortened, the efficiency of the operation is improved, safety and reliability.

Specifically, the telescopic mechanism includes a first slider 21, a rack 22, and a first rotating shaft 131.

A first sliding groove 111 is formed in one side face of the installation cavity 11 along the length direction, the first sliding block 21 is arranged on the side face of the sliding rod 2, and the first sliding rod 21 is arranged in the first sliding groove 111 in a sliding mode.

The rack 22 is fixedly arranged on the upper side surface of the sliding rod 2 along the length direction.

The handle 1 has an upper side and has been seted up perforation 13, first pivot 131 horizontal rotation sets up in perforation 13, the axial of first pivot 131 is parallel with the width direction of installation cavity 11, rubber gear 132 has set firmly on first pivot 131, rubber gear 132 and rack 22 meshing connection.

When the position of the foreign matter is deep, the rubber gear 132 is rotated by the thumb of the knife holder to push the rack 22 and the sliding rod 2 to extend out of the mounting cavity 11, so that the cutting mechanism on the semispherical body 4 is gradually close to the cutting position, the trouble of replacing a medical knife is avoided, and the operation efficiency is improved; in addition, the first sliding groove 111 can limit the sliding range of the first sliding block 21, and the sliding rod 2 is prevented from sliding out of the mounting cavity 11.

Specifically, the cutting mechanism comprises a second sector-shaped spherical body 5, a third sector-shaped spherical body 6, a first drive structure and a second drive structure.

The both ends of the fan-shaped spherical body 5 of second and the both ends of the fan-shaped spherical body 6 of third articulate on the inside wall of hemispherical body 4 coaxially, the radius of the fan-shaped spherical body 6 of third is less than the radius of the fan-shaped spherical body 5 of second, be equipped with first blade 51 and second blade 61 on the opposite side of fan-shaped spherical body 5 of second and the fan-shaped spherical body 6 of third respectively.

When the third spherical sector 6 and the second spherical sector 5 rotate in opposite directions, the inner side surface of the first blade 51 and the outer side surface of the second blade 61 contact each other, and the foreign matter is cut off.

The first driving structure is arranged on the hemispherical body 4, and the first driving structure can drive the second sector spherical body 5 to rotate.

The second driving structure is arranged on the hemispherical body 4, and the second driving structure can drive the third sector spherical body 6 to rotate.

Initial state, second sector sphere 5 and third sector sphere 6 are in the open mode, when hemisphere 4 is close to the foreign matter that needs the excision, through first drive structure and second drive structure, drive second sector sphere 5 and third sector sphere 6 and rotate in opposite directions, excise the foreign matter through first blade 51 and second blade 61, the foreign matter that downcuts is wrapped up in second sector sphere 5, between third sector sphere 6 and hemisphere 4, the foreign matter leaves the excision position along with the medical knife, avoid the foreign matter to forget in the patient is internal, cause the infection, and is simple and practical.

Specifically, the first driving structure includes a third rotating shaft 71 and a second motor.

The third rotating shaft 71 is rotatably arranged on the inner side wall of the hemispherical body 4, the axis of the third rotating shaft 71 and the axis of the second rotating shaft 41 are in the same plane and are perpendicular to each other, one end of the second sector spherical body 5 is fixedly connected with the third rotating shaft 71, and one end of the third sector spherical body 6 is rotatably arranged on the third rotating shaft 71.

The second motor 7 is fixedly arranged on the outer side surface of the semispherical body 4, and one end of the third rotating shaft 71 extends out of the semispherical body 4 and the end part of the third rotating shaft is fixedly connected with an output shaft of the second motor 7.

As one end of the second sector-shaped spherical body 5 is fixedly connected with the third rotating shaft 71, the second motor 7 is started to drive the third rotating shaft 71 to rotate and the second sector-shaped spherical body 5 to rotate, so that the first blade 51 on the second sector-shaped spherical body 5 gradually approaches to the second blade 61 of the third sector-shaped spherical body 6, and foreign matters are cut off; in addition, because one end of the third sector-shaped spherical body 61 is rotatably disposed on the third rotating shaft 71, when the third rotating shaft 71 rotates, the third sector-shaped spherical body 6 cannot rotate, so that the second sector-shaped spherical body 5 and the third sector-shaped spherical body 6 cannot rotate synchronously, thereby ensuring normal foreign matter removal.

Specifically, the second driving structure includes a fourth rotating shaft 81 and a third motor 8.

The fourth rotating shaft 81 is rotatably arranged on the inner side wall of the hemispherical body 4, the fourth rotating shaft 81 is coaxial with the third rotating shaft 71, the other end of the third sector spherical body 6 is fixedly connected with the fourth rotating shaft 81, and the other end of the second sector spherical body 5 is rotatably arranged on the fourth rotating shaft 81.

The third motor 8 is fixedly arranged on the outer side surface of the semispherical body 4, one end of the fourth rotating shaft 81 extends out of the semispherical body 4, and the end part of the fourth rotating shaft is fixedly connected with an output shaft of the third motor 8.

As the other end of the third sector-shaped spherical body 6 is fixedly connected with the fourth rotating shaft 81, the third motor 8 is started to drive the fourth rotating shaft 81 to rotate and the third sector-shaped spherical body 6 to rotate, so that the second blade 61 on the third sector-shaped spherical body 6 is gradually close to the first blade 51 of the second sector-shaped spherical body 5, and foreign matters are cut off; in addition, because the other end of the second sector-shaped spherical body 5 is rotatably arranged on the fourth rotating shaft 81, when the fourth rotating shaft 81 rotates, the second sector-shaped spherical body 5 cannot rotate, so that the third sector-shaped spherical body 6 and the second sector-shaped spherical body 5 cannot rotate synchronously, and the foreign matter can be cut off normally.

Particularly, the bottom parallel of first fan-shaped spherical body 3 has set firmly two backup pads 31, two the level has linked firmly fixed axle 32 between the backup pad 31, the tip that slide bar 2 stretches out handle 1 rotates and sets up on fixed axle 32, the axial of fixed axle 32 and the axial direction parallel of third pivot 71, be equipped with fixed establishment on slide bar 2, when first fan-shaped spherical body 3 rotated round fixed axle 32, fixed establishment can fix first fan-shaped spherical body 3 at current position.

When the foreign matter position is in narrow and small space, when not having positive hemispherical body 4 simultaneously, can rotate first fan-shaped spherical body 3 this moment, make hemispherical body 4 just to the foreign matter, rethread fixed establishment fixes first fan-shaped spherical body 3 in the current position, avoids first fan-shaped spherical body 3 to take place to rotate, influences excision work.

Specifically, the limiting mechanism includes a plurality of second notched grooves 311, a limiting plate 244, and a third driving structure.

One of the support plates 31 is semicircular away from the first sector-shaped spherical body 3, and a plurality of the second notched grooves 311 are formed on the semicircular edge of the support plate 31 along the circumferential direction.

The handle 1 is close to the one end of fixed axle 32 and has seted up first breach groove 14 along length direction, it is provided with limiting plate 244 to slide in the first breach groove 14, has at least one position, one side that limiting plate 244 is close to fixed axle 32 can stretch into in one of them second breach groove 311.

The third driving structure is disposed on the sliding rod 2, and the third driving structure can drive the limiting plate 244 to slide along the first notch groove 14.

Initial state, a side that the limiting plate 244 is close to the fixed axle stretches into in one of them second breach groove 311, fix first fan-shaped spherical body 3 at the current position, when the angle of first fan-shaped spherical body 3 needs to be changed, drive the limiting plate 244 through the third drive structure and slide to the left end in first breach groove 14, make the limiting plate 244 keep away from second breach groove 311, can rotate the angle of first fan-shaped spherical body 3 as required this moment, drive the right-hand member slip of limiting plate 244 to first breach groove 14 through the third drive structure again, make the limiting plate 244 reinsert in one of them second breach groove 311, fix first fan-shaped semi-spherical body 3, and the operation is simple.

Specifically, the third driving structure includes the second sliding chute 23, the second slider 24, the second return spring 243, and the urging structure.

The second sliding groove 23 is formed on a side surface of the sliding rod 2 close to the first notch groove 14.

The second sliding block 24 is slidably disposed in the second sliding groove 23, and a limiting plate 244 extending into the mounting cavity 11 is fixedly disposed on the second sliding block 24.

One end of the second return spring 243 is fixedly connected to the left end of the second sliding chute 23, and the other end of the second return spring 243 is fixedly connected to the left end of the second sliding block 24, and when one side of the limiting plate 244 is inserted into one of the second notch grooves 311, the second return spring 243 is in a compressed state.

The pushing structure is arranged in the second sliding groove 23, and the pushing structure can push the second sliding block 24 to move leftwards.

In an initial state, under the action of the second return spring 243, the second slider 24 is close to the right end of the second sliding slot 23, and at this time, the limit plate 244 on the second slider 24 is inserted into one of the second notched slots 311, and when the first sector-shaped spherical body 3 needs to be rotated, the second slider 24 is pushed by the pushing structure to slide leftward to extrude the second return spring 243, and meanwhile, the limit plate 244 on the second slider 24 moves leftward to be away from the second notched slot 311, so that the support plate 31 is in a movable state, and the first sector-shaped spherical body 3 is convenient to rotate.

Specifically, the pushing structure includes a telescopic bladder 245 and an elastic bladder 121.

The telescopic air bag 245 is fixedly arranged between the right end of the second sliding block 24 and the right side surface of the second sliding chute 23.

The handle is characterized in that a blind hole 12 is formed in the upper side face of the handle 1, the elastic air bag 121 is fixedly arranged in the blind hole 12, the upper end of the elastic air bag 121 extends out of the upper side face of the handle 1, the elastic air bag 121 is communicated with the telescopic air bag 245 through a hose, and a first reset spring 122 is vertically arranged in the elastic air bag 121.

In an initial state, the amount of gas in the elastic airbag 121 is large, the amount of gas in the telescopic airbag 245 is small, when an operator presses the elastic airbag 121 with a thumb, the gas in the elastic airbag 121 is squeezed into the telescopic airbag 245, so that the telescopic airbag 245 expands and extends, the second slider 24 is pushed to slide towards the left end of the second chute 23, the limiting plate 244 is made to leave the second notch groove 311, the support plate 31 and the first sector-shaped spherical body 3 rotate conveniently, when the operator releases the elastic airbag 121, the second slider 24 squeezes the telescopic airbag 245 under the action of the second return spring 243, the gas in the telescopic airbag 245 is squeezed into the elastic airbag 121, and simultaneously, under the action of the first return spring 122, the elastic airbag 121 is quickly restored to the initial state, and the structure is simple.

In the description of this patent, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the patent and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the patent.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.