CN114732489B

CN114732489B - Ultrasonic knife convenient for replacing sleeve

Info

Publication number: CN114732489B
Application number: CN202210470004.0A
Authority: CN
Inventors: 李健聪; 陈亮
Original assignee: Jiangsu Baining Yingchuang Medical Technology Co ltd
Current assignee: Jiangsu Baining Yingchuang Medical Technology Co ltd
Priority date: 2022-04-30
Filing date: 2022-04-30
Publication date: 2022-10-28
Anticipated expiration: 2042-04-30
Also published as: CN114732489A

Abstract

The invention discloses an ultrasonic knife convenient for replacing a sleeve, wherein a grab handle is arranged at the bottom of a horizontal plate, a push plate is connected in a sliding hole of the horizontal plate in a sliding manner, a pull rod is connected with the grab handle in a sliding manner through a first sliding plate, a connecting plate in contact with the push plate is connected on a vertical plate in a sliding manner, a connecting sleeve is arranged on the vertical plate, a wiring pipe is arranged in the connecting sleeve, an inner sleeve is sleeved on the outer circumference of the connecting sleeve, a second replacing component is arranged on the vertical plate, an outer sleeve is sleeved on the outer circumference of the inner sleeve, a first replacing component is arranged on the vertical plate, and the second replacing component and the first replacing component are respectively connected with the connecting plate. The pull rod is adopted to drive the push plate to rotate on the fixed plate through the first connecting shaft, the push plate pushes the connecting plate to slide on the vertical plate, the second replacing component and the first replacing component are respectively connected with the connecting plate, a torque wrench is not needed, the inner sleeve is easily replaced by the second replacing component when the connecting plate is pushed, the outer sleeve is easily replaced by the first replacing component, and the purposes of convenience in disassembly and assembly and medical cost saving are achieved.

Description

Ultrasonic knife convenient for replacing sleeve

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an ultrasonic knife convenient for replacing a sleeve.

Background

In modern surgery, an ultrasonic knife is often used to cut and coagulate blood at a lesion. The ultrasonic scalpel has small damage to surrounding tissues, so that the ultrasonic scalpel can separate and cut the important visceral organs and the large blood vessels, has less smoke and eschar, ensures that the visual field of the laparoscopic surgery is clearer, can shorten the surgery time, has no current to pass through a human body so that the surgery operation is more convenient, reduces the occurrence of complications, reduces the difficulty of the surgery and also reduces the bleeding amount in the surgery.

The ultrasonic scalpel of the prior art is a scalpel rod and a sleeve fixedly arranged on a handle, the whole ultrasonic scalpel is integrated, after the ultrasonic scalpel is used and finished every time, residues between the scalpel rod and the sleeve are not easy to clean and disinfect thoroughly, cross infection risks exist, and therefore the ultrasonic scalpel can be used only once even if the performance of an instrument is still good, and the medical cost is high. The existing detachable ultrasonic knife needs to be replaced by a torque wrench and cannot be replaced independently.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the ultrasonic knife which is convenient to disassemble and assemble and saves medical cost and is convenient for replacing the sleeve.

The technical scheme for solving the technical problems is as follows: the ultrasonic replacing device comprises a horizontal plate, a grab handle, a push plate, a vertical plate, a connecting sleeve and a connecting sleeve, wherein the grab handle is arranged at the bottom of the horizontal plate, the push plate is connected with the pull rod in a sliding manner in a sliding hole of the horizontal plate, the pull rod is connected with the grab handle in a sliding manner through a first sliding plate, the horizontal plate is provided with the vertical plate, the vertical plate is connected with the connecting plate in contact with the push plate in a sliding manner, the vertical plate is provided with the connecting sleeve, the connecting sleeve is arranged in the connecting sleeve, the connecting sleeve is connected with an ultrasonic host in a sleeved manner, the outer circumference of the connecting sleeve is sleeved with an inner sleeve, the vertical plate is provided with a second replacing component for replacing the inner sleeve, the outer circumference of the inner sleeve is sleeved with an outer sleeve, one end of the inner sleeve and one end of the outer sleeve are respectively provided with a tool bit connected with the connecting sleeve, the vertical plate is provided with a first replacing component for replacing the outer sleeve, and the second replacing component and the first replacing component are respectively connected with the connecting plate.

Further, the first replacement component is: a first fixing frame is arranged on one side of the vertical plate, a first connecting rod and a third connecting rod are respectively connected to two sides in the first fixing frame in a sliding mode in the vertical direction, a first push block in inclined contact with one end of the push rod is arranged on the first connecting rod, a third spring is arranged on the first connecting rod, one end of the third spring is fixedly connected with a top plate of the first connecting rod, the other end of the third spring is fixedly connected with one side of the top face of the first fixing frame, a second sliding plate in sliding connection with an inclined sliding groove of the connecting plate is arranged at the bottom end of the first connecting rod, the first connecting rod is fixedly connected with one end of a seventh connecting rod through a fourth connecting rod, the other end of the seventh connecting rod is in sliding connection with a third fixing rod through a sixth connecting rod, the top end of the third fixing rod is in sliding connection with the second fixing frame, an upper clamping plate for clamping the outer circumference of the upper side of the outer sleeve is arranged at the bottom end of the third fixing rod, a fifth spring is arranged on the outer circumference of the third fixing rod, one end of the fifth spring is fixedly connected with one end of the sixth connecting rod and one end of the third fixing rod, and the other end of the fifth spring is fixedly connected with the upper clamping plate; the third connecting rod is provided with a second push block which is in inclined plane contact with the other end of the push rod, the third connecting rod is provided with a sixth spring, one end of the sixth spring is fixedly connected with a top plate of the third connecting rod, the other end of the sixth spring is fixedly connected with the other side of the top surface of the first fixing frame, the third connecting rod is in sliding connection with a second fixing rod through the second connecting rod, one end of the second fixing rod is provided with a lower clamping plate for clamping the outer circumference of the lower side of the outer sleeve, the second fixing rod is provided with a fourth spring, one end of the fourth spring is fixedly connected with one end of the joint of the second connecting rod and the second fixing rod, and the other end of the fourth spring is fixedly connected with the lower clamping plate.

Furthermore, the second fixing frame is connected with one end of the first guide rod in a sliding mode, and the other end of the first guide rod is fixedly connected with the upper clamping plate.

Furthermore, the lower clamping plate is fixedly connected with one end of a second guide rod, and the other end of the second guide rod is in sliding connection with a fifth connecting rod fixedly installed on the vertical plate.

Furthermore, the vertical movement direction of the first connecting rod is opposite to the vertical movement direction of the third connecting rod.

Further, the second replacement component is: the connecting plate is fixedly connected with a second rack which is connected to the second fixing frame in a sliding manner, a second connecting shaft is arranged on a supporting shell on the second fixing frame, a seventh spring is arranged on the second connecting shaft, one end of the seventh spring is fixedly connected with the inner side of the supporting shell, the other end of the seventh spring is fixedly connected with an eighth connecting rod which is connected to the second connecting shaft in a sliding manner, the upper end of the eighth connecting rod is fixedly connected with a first rack which is connected to the second fixing frame in a sliding manner, and the first rack and the second rack are respectively in meshing transmission with the first gear; the bottom of the second fixing frame is provided with a first supporting frame, an inner sleeve is arranged in a round hole of the first supporting frame, a horizontal sliding groove matched with a first convex block on the circumference of the inner sleeve is formed in the inner circumference of the round hole of the first supporting frame, the first supporting frame is rotatably connected with one end of a screw rod, the other end of the screw rod is rotatably connected with a second supporting frame at the bottom of the second fixing frame, the lower end of an eighth connecting rod is in threaded connection with the screw rod through a ninth connecting rod, a second gear fixedly connected with one end of the screw rod is arranged on the second supporting frame, a ring of the outer circumference of the inner sleeve is provided with a gear ring in meshing transmission with the second gear, and a second convex block matched with a second horizontal sliding groove of the outer circumference of the inner sleeve is arranged in the inner circumference of the gear ring.

Furthermore, the second fixing frame is connected with a sliding rod in sliding connection with a connecting sleeve in a sliding manner, the connecting sleeve is provided with an eighth spring, one end of the eighth spring is fixedly connected with the joint of the sliding rod and the connecting sleeve, the other end of the eighth spring is fixedly connected with the inner sleeve, and the sliding rod is fixedly connected with the second rack through a tenth connecting rod.

Further, the moving direction of the first rack is opposite to the moving direction of the second rack.

Furthermore, a second spring is arranged in the groove of the grab handle, one end of the second spring is fixedly connected with the inner side wall of the groove, and the other end of the second spring is fixedly connected with the first sliding plate.

Furthermore, the bottom of the horizontal plate is provided with a fixed plate, the fixed plate is rotatably connected with a first connecting shaft, the first connecting shaft is fixedly connected with the pull rod, a first fixed rod in sliding connection with the connecting plate is arranged on the vertical plate, a first spring is arranged on the first fixed rod, and one end of the first spring is fixedly connected with the vertical plate, and the other end of the first spring is in sliding connection with the connecting plate.

According to the invention, the pull rod is pulled, the pull rod drives the push plate to rotate on the fixed plate through the first connecting shaft, the push plate slides on the horizontal plate, the push plate pushes the connecting plate to slide on the vertical plate, the second replacing component and the first replacing component are respectively connected with the connecting plate, a torque wrench is not needed, the inner sleeve can be easily replaced by the second replacing component when the connecting plate is pushed, the outer sleeve can be easily replaced by the first replacing component, and the inner sleeve and the outer sleeve can also be simultaneously replaced, so that the purposes of convenience in disassembly and assembly and medical cost saving are achieved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 from another angle.

Fig. 3 is a schematic view of the connection structure of the grip 9, the first slider 10 and the pull rod 11.

Fig. 4 is a schematic structural view of the first replacing assembly 1 in fig. 1.

Fig. 5 is a schematic view of the structure of fig. 4 from another angle.

Fig. 6 is a schematic structural view of the connection plate 5 in fig. 4.

Fig. 7 is a schematic structural view of the second replacement assembly 2 of fig. 1.

Fig. 8 is a schematic view of the structure of fig. 7 with parts broken away.

Fig. 9 is a schematic structural diagram of the first support frame 211 in fig. 7.

Figure 10 is a schematic view of the structure of inner sleeve 14 of figure 8.

Fig. 11 is a schematic structural view of the ring gear 207 in fig. 8.

Reference numerals: 1. a first replacement component; 101. a first fixing frame; 102. a push rod; 103. a third spring; 104. a first connecting rod; 105. a first push block; 106. a second slide plate; 107. a second connecting rod; 108. a second fixing bar; 109. a fourth spring; 110. a lower clamping plate; 111. an upper clamping plate; 112. a fifth spring; 113. a third fixing bar; 114. a second fixing frame; 115. a second push block; 116. a third connecting rod; 117. a sixth spring; 118. a fourth connecting rod; 119. a first guide bar; 120. a second guide bar; 121. a fifth connecting rod; 122. a sixth connecting rod; 123. a seventh connecting rod; b. an inclined chute; 2. a second replacement component; 201. a second connecting shaft; 202. an eighth connecting rod; 203. a first rack; 204. a seventh spring; 205. a first gear; 206. a second rack; 207. a ring gear; 208. a collar; 209. a ninth connecting rod; 210. a screw rod; 211. a first support frame; 212. a support housing; 213. a slide bar; 214. an eighth spring; 215. a tenth connecting rod; 216. a second gear; 217. a second support frame; 218. a first bump; 219. a second bump; c. a first horizontal chute; d. a second horizontal chute; 3. a vertical plate; 4. a first spring; 5. a connecting plate; 6. a first fixing lever; 7. pushing a plate; 8. a horizontal plate; 9. a handle; 10. a first slide plate; 11. a pull rod; 12. a first connecting shaft; 13. a connecting sleeve; 14. an inner sleeve; 15. an outer sleeve; 16. a wire connecting pipe; 17. a second spring; 18. a fixing plate; a. and (4) a slide hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, the ultrasonic scalpel facilitating sleeve replacement of the present embodiment is formed by coupling a first replacement component 1, a second replacement component 2, a vertical plate 3, a first spring 4, a connecting plate 5, a first fixing rod 6, a pushing plate 7, a horizontal plate 8, a grip 9, a first sliding plate 10, a pull rod 11, a first connecting shaft 12, a connecting sleeve 13, an inner sleeve 14, an outer sleeve 15, a wire connecting tube 16, a second spring 17, a fixing plate 18, and a sliding hole a.

At 8 bottom fixed mounting of horizontal plate have the grab handle 9, sliding connection has push pedal 7 in the slide opening a of horizontal plate 8, and push pedal 7 is connected with pull rod 11, and pull rod 11 has second spring 17 through first slide 10 and grab handle 9 sliding connection, fixed mounting in the recess of grab handle 9, second spring 17 one end and recess inside wall fixed connection, second spring 17 other end and first slide 10 fixed connection. The bottom of the horizontal plate 8 is fixedly provided with a fixing plate 18, the fixing plate 18 is rotatably connected with a first connecting shaft 12, and the first connecting shaft 12 is fixedly connected with the pull rod 11. Fixed mounting has the first dead lever 6 with connecting plate 5 sliding connection on the vertical plate 3, installs first spring 4 on the first dead lever 6, and first spring 4 one end and vertical plate 3 fixed connection, the 4 other ends of first spring and connecting plate 5 sliding connection. The ultrasonic probe comprises a horizontal plate 8, a vertical plate 3 is fixedly installed on the horizontal plate 3, the vertical plate 3 is connected with a connecting plate 5 in sliding contact with a push plate 7, a connecting sleeve 13 is fixedly installed on the vertical plate 3, a wiring pipe 16 connected with an ultrasonic host is installed in the connecting sleeve 13, an inner sleeve 14 is sleeved on the outer circumference of the connecting sleeve 13, a second replacement component 2 is installed on the vertical plate 3, the second replacement component 2 is used for replacing the inner sleeve 14, an outer sleeve 15 is sleeved on the outer circumference of the inner sleeve 14, tool bits connected with the wiring pipe 16 are installed at one ends of the inner sleeve 14 and the outer sleeve 15 respectively, a first replacement component 1 is installed on the vertical plate 3, the first replacement component 1 is used for replacing the outer sleeve 15, the second replacement component 2 and the first replacement component 1 are connected with the connecting plate 5 respectively, a torque wrench is not needed, the inner sleeve 14 can be replaced easily by the second replacement component 2 when the connecting plate 5 is pushed, and the outer sleeve 15 can be replaced easily by the first replacement component 1.

As shown in fig. 4 to 6, the first replacement assembly 1 is formed by coupling a first fixing frame 101, a push rod 102, a third spring 103, a first connecting rod 104, a first push block 105, a second sliding plate 106, a second connecting rod 107, a second fixing rod 108, a fourth spring 109, a lower clamping plate 110, an upper clamping plate 111, a fifth spring 112, a third fixing rod 113, a second fixing frame 114, a second push block 115, a third connecting rod 116, a sixth spring 117, a fourth connecting rod 118, a first guide rod 119, a second guide rod 120, a fifth connecting rod 121, a sixth connecting rod 122, a seventh connecting rod 123, and an inclined chute b, and the first replacement assembly 1 is: a first fixing frame 101 is fixedly installed on one side of the vertical plate 3, a first connecting rod 104 and a third connecting rod 116 are respectively connected to two sides in the first fixing frame 101 in a sliding manner in the vertical direction, the vertical movement direction of the first connecting rod 104 is opposite to the vertical movement direction of the third connecting rod 116, a first push block 105 in inclined contact with one end of the push rod 102 is fixedly installed on the first connecting rod 104, a third spring 103 is installed on the first connecting rod 104, one end of the third spring 103 is fixedly connected with a top plate of the first connecting rod 104, the other end of the third spring 103 is fixedly connected with one side of the top surface of the first fixing frame 101, a second sliding plate 106 in sliding connection with the inclined chute b of the connecting plate 5 is fixedly installed at the bottom end of the first connecting rod 104, the first connecting rod 104 is fixedly connected with one end of a seventh connecting rod 123 through a fourth connecting rod 118, the seventh connecting rod 123 is in sliding connection with the vertical direction, the other end of the seventh connecting rod 123 is in sliding connection with a third fixing rod 113 through a sixth connecting rod 122, the top end of the third fixing rod 113 is in sliding connection with a second fixing frame 114, an upper clamping plate 111 for clamping the upper side of the outer sleeve 15 is fixedly installed at the bottom end of the third fixing rod 113, a third fixing rod 112 is connected with an outer circumference of the outer sleeve 111, and a third spring 112, and a third fixing plate 112 is connected with a fifth spring 111, and a third fixing plate 111. The second fixing frame 114 is slidably connected to one end of the first guiding rod 119, and the other end of the first guiding rod 119 is fixedly connected to the upper clamping plate 111.

A second push block 115 which is in contact with the inclined plane at the other end of the push rod 102 is fixedly arranged on the third connecting rod 116, a sixth spring 117 is arranged on the third connecting rod 116, one end of the sixth spring 117 is fixedly connected with a top plate of the third connecting rod 116, the other end of the sixth spring 117 is fixedly connected with the other side of the top surface of the first fixing frame 101, the third connecting rod 116 is in sliding connection with a second fixing rod 108 through a second connecting rod 107, a lower clamping plate 110 which clamps the outer circumference of the lower side of the outer sleeve 15 is fixedly arranged at one end of the second fixing rod 108, a fourth spring 109 is arranged on the second fixing rod 108, one end of the fourth spring 109 is fixedly connected with one end of the joint of the second connecting rod 107 and the second fixing rod 108, and the other end of the fourth spring 109 is fixedly connected with the lower clamping plate 110. The lower clamping plate 110 is fixedly connected with one end of a second guide rod 120, and the other end of the second guide rod 120 is slidably connected with a fifth connecting rod 121 fixedly installed on the vertical plate 3.

As shown in fig. 7 to 11, the second replacement component 2 is formed by coupling a second connecting shaft 201, an eighth connecting rod 202, a first rack 203, a seventh spring 204, a first gear 205, a second rack 206, a gear ring 207, a collar 208, a ninth connecting rod 209, a screw 210, a first support frame 211, a support housing 212, a slide rod 213, an eighth spring 214, a tenth connecting rod 215, a second gear 216, a second support frame 217, a first projection 218, a second projection 219, a first horizontal sliding groove c, and a second horizontal sliding groove d, and the second replacement component 2 is: the connecting plate 5 is fixedly connected with a second rack 206 which is slidably connected to the second fixing frame 114, a second connecting shaft 201 is fixedly mounted on a supporting shell 212 on the second fixing frame 114, a seventh spring 204 is mounted on the second connecting shaft 201, one end of the seventh spring 204 is fixedly connected with the inner side of the supporting shell 212, the other end of the seventh spring 204 is fixedly connected with an eighth connecting rod 202 which is slidably connected to the second connecting shaft 201, the upper end of the eighth connecting rod 202 is fixedly connected with a first rack 203 which is slidably connected to the second fixing frame 114, and the first rack 203 and the second rack 206 are respectively in meshing transmission with a first gear 205. The direction of movement of the first rack 203 is opposite to the direction of movement of the second rack 206.

The bottom of the second fixing frame 114 is fixedly provided with a first supporting frame 211, an inner sleeve 14 is arranged in a round hole of the first supporting frame 211, a horizontal sliding groove c matched with a first lug 218 on the circumference of the inner sleeve 14 is formed in the inner circumference of the round hole of the first supporting frame 211, the first supporting frame 211 is rotatably connected with one end of a screw rod 210, the other end of the screw rod 210 is rotatably connected with a second supporting frame 217 fixedly arranged at the bottom of the second fixing frame 114, the lower end of an eighth connecting rod 202 is in threaded connection with the screw rod 210 through a ninth connecting rod 209, the second supporting frame 217 is provided with a second gear 216 fixedly connected with one end of the screw rod 210, the outer circumference of the inner sleeve 14 is movably connected with a lantern ring 208, the lantern ring 208 is movably provided with a gear ring 207 in meshing transmission with the second gear 216, and a second lug 219 matched with a second horizontal sliding groove d on the outer circumference of the inner sleeve 14 is fixedly arranged on the inner circumference of the gear 207. A sliding rod 213 is slidably connected to the second fixing frame 114, the sliding rod 213 is slidably connected to the connecting sleeve 13, an eighth spring 214 is installed on the connecting sleeve 13, one end of the eighth spring 214 is fixedly connected to a joint of the sliding rod 213 and the connecting sleeve 13, the other end of the eighth spring 214 is fixedly connected to the inner sleeve 14, and the sliding rod 213 is fixedly connected to the second rack 206 through a tenth connecting rod 215.

The working principle of the embodiment is as follows: (1) replacement of the outer sleeve 15: pulling the pull rod 11, compressing the second spring 17, the pull rod 11 drives the push plate 7 to rotate on the fixing plate 18 through the first connecting shaft 12, meanwhile, the push plate 7 slides in the sliding hole a on the horizontal plate 8, the push plate 7 pushes the connecting plate 5 to slide on the vertical plate 3 along the first fixing rod 6, the second sliding plate 106 slides in the inclined sliding groove b on the connecting plate 5, the second sliding plate 106 drives the first connecting rod 104 to move upwards in the vertical direction, the first connecting rod 104 drives the sixth connecting rod 122 to move upwards in the vertical direction through the fourth connecting rod 118 and the seventh connecting rod 123 in sequence, the sixth connecting rod 122 pulls the fifth spring 112, the fifth spring 112 stretches, the fifth spring 112 drives the upper clamping plate 111 to move upwards in the vertical direction, and the upper clamping plate 111 is separated from the outer sleeve 15.

The first push block 105 on the first connecting rod 104 drives one end of the push rod 102 to move upwards, the other end of the push rod 102 moves downwards, the other end of the push rod 102 pushes the third connecting rod 116 to move downwards in the vertical direction through the second push block 115, the third connecting rod 116 drives the second connecting rod 107 to move downwards in the vertical direction, the second connecting rod 107 drives the fourth spring 109 to stretch, the fourth spring 109 drives the lower clamping plate 110 to move downwards in the vertical direction, the lower clamping plate 110 is separated from the outer sleeve 15, and the outer sleeve 15 can be easily replaced without the help of a torque wrench.

(2) Replacement of inner sleeve 14: the connecting plate 5 drives the second rack 206 to move in the horizontal direction, the second rack 206 drives the first rack 203 to move in the horizontal direction through the first gear 205, the moving direction of the first rack 203 is opposite to that of the second rack 206, the first rack 203 drives the eighth connecting rod 202 to move horizontally on the second connecting shaft 201, the eighth connecting rod 202 drives the lead screw 210 to rotate through the ninth connecting rod 209, the lead screw 210 drives the second gear 216 to rotate, the second gear 216 drives the gear ring 207 to rotate, the second bump 219 on the gear ring 207 drives the inner sleeve 14 to rotate through matching with the second horizontal sliding slot d of the inner sleeve 14, the first bump 218 rotated to the inner sleeve 14 is connected with the first horizontal sliding slot c on the inner circumference of the round hole on the first supporting frame 211 in a matching manner, the inner sleeve 14 is not clamped with the first supporting frame 211 any longer, and the inner sleeve 14 can be easily replaced without a torque wrench.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An ultrasonic blade for facilitating cannula replacement, comprising: the ultrasonic replacing device is characterized in that a grab handle (9) is arranged at the bottom of a horizontal plate (8), a push plate (7) connected with a pull rod (11) is connected in a sliding manner in a sliding hole (a) of the horizontal plate (8), the pull rod (11) is connected with the grab handle (9) in a sliding manner through a first sliding plate (10), a vertical plate (3) is arranged on the horizontal plate (8), a connecting plate (5) in contact with the push plate (7) is connected on the vertical plate (3) in a sliding manner, a connecting sleeve (13) is arranged on the vertical plate (3), a wiring pipe (16) connected with an ultrasonic main machine is arranged in the connecting sleeve (13), an inner sleeve (14) is sleeved on the outer circumference of the connecting sleeve (13), a second replacing component (2) used for replacing the inner sleeve (14) is arranged on the vertical plate (3), an outer sleeve (15) is sleeved on the outer circumference of the inner sleeve (14), a cutter head connected with the wiring pipe (16) is respectively arranged at one end of the inner sleeve (14) and one end of the outer sleeve (15), a first replacing component (1) used for replacing the outer sleeve (15) is arranged on the vertical plate (3), and the second replacing component (2) and the first replacing component (1) is respectively connected with the connecting plate (5);

the first replacement component (1) is as follows: a first fixing frame (101) is arranged on one side of the vertical plate (3), a first connecting rod (104) and a third connecting rod (116) are respectively connected with the two sides in the first fixing frame (101) in a sliding way in the vertical direction, a first push block (105) which is contacted with the inclined surface of one end of the push rod (102) is arranged on the first connecting rod (104), a third spring (103) is arranged on the first connecting rod (104), one end of the third spring (103) is fixedly connected with the top plate of the first connecting rod (104), the other end of the third spring is fixedly connected with one side of the top surface of the first fixing frame (101), a second sliding plate (106) which is connected with the inclined sliding groove (b) of the connecting plate (5) in a sliding way is arranged at the bottom end of the first connecting rod (104), the first connecting rod (104) is fixedly connected with one end of a seventh connecting rod (123) through a fourth connecting rod (118), the other end of the seventh connecting rod (123) is slidably connected with a third fixing rod (113) through a sixth connecting rod (122), the top end of the third fixing rod (113) is slidably connected with a second fixing frame (114), the bottom end of the third fixing rod (113) is provided with an upper clamping plate (111) for clamping the outer circumference of the upper side of the outer sleeve (15), the outer circumference of the third fixing rod (113) is provided with a fifth spring (112), one end of the fifth spring (112) is fixedly connected with one end of the joint of the sixth connecting rod (122) and the third fixing rod (113), the other end is fixedly connected with an upper clamping plate (111);

a second push block (115) which is in inclined surface contact with the other end of the push rod (102) is arranged on the third connecting rod (116), a sixth spring (117) is arranged on the third connecting rod (116), one end of the sixth spring (117) is fixedly connected with a top plate of the third connecting rod (116), the other end of the sixth spring is fixedly connected with the other side of the upper top surface of the first fixing frame (101), the third connecting rod (116) is slidably connected with a second fixing rod (108) through a second connecting rod (107), one end of the second fixing rod (108) is provided with a lower clamping plate (110) which clamps the outer circumference of the lower side of the outer sleeve (15), a fourth spring (109) is arranged on the second fixing rod (108), one end of the joint of one end of the fourth spring (109) and the second connecting rod (107) and the second fixing rod (108) is fixedly connected, and the other end of the joint of the fourth spring (109) is fixedly connected with the lower clamping plate (110).

2. An ultrasonic blade for facilitating cannula replacement as in claim 1, wherein: the second fixing frame (114) is connected with one end of the first guide rod (119) in a sliding mode, and the other end of the first guide rod (119) is fixedly connected with the upper clamping plate (111).

3. An ultrasonic blade for facilitating cannula replacement as in claim 2 wherein: the lower clamping plate (110) is fixedly connected with one end of a second guide rod (120), and the other end of the second guide rod (120) is in sliding connection with a fifth connecting rod (121) fixedly installed on the vertical plate (3).

4. An ultrasonic blade for facilitating cannula replacement as in claim 3 wherein: the vertical movement direction of the first connecting rod (104) is opposite to that of the third connecting rod (116).

5. An ultrasonic blade for facilitating cannula exchange according to claim 1, wherein the second exchange assembly (2) is: the connecting plate (5) is fixedly connected with a second rack (206) which is connected to a second fixing frame (114) in a sliding manner, a second connecting shaft (201) is arranged on a supporting shell (212) on the second fixing frame (114), a seventh spring (204) is arranged on the second connecting shaft (201), one end of the seventh spring (204) is fixedly connected with the inner side of the supporting shell (212), the other end of the seventh spring is fixedly connected with an eighth connecting rod (202) which is connected to the second connecting shaft (201) in a sliding manner, the upper end of the eighth connecting rod (202) is fixedly connected with a first rack (203) which is connected to the second fixing frame (114) in a sliding manner, and the first rack (203) and the second rack (206) are respectively in meshing transmission with a first gear (205); the bottom of the second fixing frame (114) is provided with a first supporting frame (211), an inner sleeve (14) is arranged on a round hole of the first supporting frame (211), a horizontal sliding groove (c) matched with a first lug (218) on the circumference of the inner sleeve (14) is formed in the inner circumference of the round hole of the first supporting frame (211), the first supporting frame (211) is rotatably connected with one end of a screw rod (210), the other end of the screw rod (210) is rotatably connected with a second supporting frame (217) at the bottom of the second fixing frame (114), the lower end of an eighth connecting rod (202) is in threaded connection with the screw rod (210) through a ninth connecting rod (209), a second gear (216) fixedly connected with one end of the screw rod (210) is arranged on the second supporting frame (217), a gear ring (208) on the outer circumference of the inner sleeve (14) is provided with a gear ring (207) in meshing transmission with the second gear (216), and a second lug (219) matched with a second horizontal sliding groove (d) on the outer circumference of the inner sleeve (14) is arranged on the inner circumference of the gear ring (207).

6. An ultrasonic blade for facilitating cannula replacement as in claim 5 wherein: the second fixing frame (114) is connected with a sliding rod (213) in sliding connection with the connecting sleeve (13), an eighth spring (214) is arranged on the connecting sleeve (13), one end of the eighth spring (214) is fixedly connected with the joint of the sliding rod (213) and the connecting sleeve (13), the other end of the eighth spring is fixedly connected with the inner sleeve (14), and the sliding rod (213) is fixedly connected with the second rack (206) through a tenth connecting rod (215).

7. An ultrasonic blade for facilitating cannula replacement as in claim 6 wherein: the moving direction of the first rack (203) is opposite to that of the second rack (206).

8. An ultrasonic blade for facilitating cannula replacement as in claim 1, wherein: the groove of the grab handle (9) is internally provided with a second spring (17), one end of the second spring (17) is fixedly connected with the inner side wall of the groove, and the other end of the second spring is fixedly connected with the first sliding plate (10).

9. An ultrasonic blade for facilitating cannula replacement as in claim 1, wherein: horizontal plate (8) bottom be provided with fixed plate (18), fixed plate (18) rotate and are connected with first connecting axle (12), first connecting axle (12) and pull rod (11) fixed connection, be provided with on vertical plate (3) with connecting plate (5) sliding connection's first dead lever (6), be provided with first spring (4) on first dead lever (6), first spring (4) one end and vertical plate (3) fixed connection, the other end and connecting plate (5) sliding connection.