TWI644646B - Puncture device - Google Patents

Abstract

A puncture device comprising a puncture device and a socket. The puncture device comprises a base and a puncture portion, and the puncture portion includes a protrusion and a tip end, and the protrusion extends radially outward from the outer surface of the puncture portion. The socket includes a pneumatic seat, a first cannula assembly, a second cannula assembly, a mount, and an air bag. The second cannula assembly is retractable to receive the first cannula assembly in the second cannula assembly. The fixing seat is fixed to the second sleeve assembly, and the inner wall of the fixing seat has a guiding groove and a key groove. The guiding groove has a depth greater than the key groove, and the guiding groove communicates with the key groove. When the protruding block of the puncture device is entered by the guiding groove, After the rotation of the bump to set the key groove, the puncture device is fixed to the fixing seat, and the puncture device drives the fixing seat to move along a long axis direction of the puncture device.

Description

Puncture device

The present invention relates to a minimally invasive surgical tool, and more particularly to a trocar.

Today's surgery replaces the scalpel with a trocar (Trocar), opens the human body, and then performs medical procedures such as tissue burning and resection in the body through optical instruments such as optical fibers, endoscopes, and lasers. This surgical method can reduce the wounds of the wound, reduce the pain, shorten the bed rest and postoperative rest time, and reduce the scar after recovery. Because these surgerys have small wounds and quick recovery, they are called minimally invasive surgery.

The puncturing device usually comprises a long tube and a knife for piercing. The knife is inserted into the long tube. When the knife is opened from the human body or the animal, the long tube can be withdrawn from the long tube, and then the long tube is fixed on the human body. The related optical fibers, endoscopes, lasers, and the like are drilled into the human body along the long tube to perform operations such as tissue removal and burning.

The long tube of the existing puncturing device is fixed on the human body or the animal during the operation stage, and is easy to be touched and shaken due to the long length, and is easily interfered with by the medical personnel. In addition, since the tool is only limited by the wall of the long tube, the long tube and the instrument will still move relative to each other. If the position of the positioning is offset, when the position needs to be adjusted, additional destructive intrusion may occur, causing the wound to expand, resulting in The pain and discomfort of the patient.

In order to solve the problems of the prior art, a trocar is provided herein. The trocar includes a puncturing device and a socket. The puncture device includes a base and a puncture portion, the puncture portion extends from a direction perpendicular to the base, and the puncture portion includes a protrusion and a tip end. The tip is located at the other end of the piercing portion relative to the base, and the bump extends radially outward from the outer surface of the piercing portion. The socket includes a pneumatic seat, a first cannula assembly, a second cannula assembly, a mount, and an air bag.

The air pressure seat includes a handle, a connecting portion, and a first air valve. The handle includes an opening through which the piercing portion is inserted and the base contacts the handle. The connecting portion extends from the handle and includes an assembly passage that communicates with the opening. The first air valve is connected to the connecting portion and communicates with the assembly passage. The first sleeve assembly includes a first set of joints and a first sleeve end, the first set of joint ends are assembled in the assembly passage, and the first set of joint ends corresponds to the first gas valve, and the first sleeve end is connected to the pipe wall The upper opening is provided with at least one first opening. The second sleeve assembly includes a second set of ends and a second sleeve end, and the second set of ends is telescopically sleeved to the first sleeve end. The second sleeve assembly is retractable relative to the first sleeve assembly such that the first sleeve assembly is received in the second sleeve assembly to reduce the overall length of the first sleeve assembly and the second sleeve assembly. The fixing seat is fixed to the second socket end, and the fixing seat comprises a channel, an inner edge wall, a guiding groove, a keyway, and an air outlet. The passage extends through the fixing seat, and the extending wall faces the passage from the inner wall of the fixing seat, and the guiding groove communicates with the passage and is adjacent to the inner edge wall. The key groove is opened on the inner edge wall and communicates with the guide groove. The width of one end of the key groove away from the guiding groove is smaller than the width of one end adjacent to the guiding groove. The air outlet is opened on the outer surface of the fixing seat, and the piercing portion is located in the assembly passage, the first sleeve assembly, the second sleeve assembly, and the passage, and the tip protrudes from the fixing seat. The airbag is sleeved on the fixing seat and corresponds to the air outlet. When the protrusion of the puncture device enters through the guiding slot, the protrusion can be rotated to slide along the keyway to contact with the inner edge wall, so that the puncture device and the fixing seat are fixed, and the puncture is fixed. The instrument drives the socket to move along the long axis of the puncturing instrument.

In some embodiments, the first sleeve assembly further includes a first inner tube and a first outer tube, and the first sleeve assembly is divided into a first tube wall region and a second tube wall region. In the first wall region, the first outer tube surrounds the first inner tube. In the second wall region, the first outer tube does not surround the first inner tube. The second sleeve assembly comprises a second inner tube and a second outer tube, and the second sleeve assembly is divided into a third tube wall region and a fourth tube wall region, and in the third outer tube wall region, the second outer tube surrounds the An outer tube surrounds the second inner tube in the fourth outer tube wall region and the second outer tube wall, and the first opening is opened in the tube wall of the first outer tube.

Further, an air flow is formed between the first inner tube and the first outer tube, between the first opening, the first outer tube and the second outer tube, between the second outer tube and the second inner tube, and the air outlet. aisle. When the gas enters the first gas valve, it flows along the air flow passage and enters the air bag through the air outlet.

In some embodiments, the trocar further comprises a hermetic component. The airtight assembly is disposed on a portion of the first sleeve assembly and the second sleeve assembly to seal the socket of the first sleeve assembly and the second sleeve assembly. In more detail, the airtight assembly includes a stopper and a gas tight sleeve, the stopper is assembled on the first sleeve assembly and adjacent to the first sleeve end, and the gas tight sleeve is sleeved on the first sleeve assembly And a sleeve of the second sleeve assembly, and the airtight sleeve covers the stopper.

As the piercer is stretched, the second cannula assembly moves away from the air pressure seat relative to the first cannula assembly until the stop member contacts the second cannula assembly. When the socket is retracted, the second sleeve assembly moves relative to the first sleeve assembly toward the grip portion, and the first sleeve assembly is received into the second sleeve assembly until the airtight assembly contacts the connection portion.

Further, the airtight component further comprises a gas tight ring, the gas tight ring is sleeved on a part of the first sleeve assembly, and is in contact with the stopper, and the airtight ring is wrapped in the airtight sleeve. In other embodiments, the airtight assembly further includes a fastener that is coupled to the first socket end and that is in contact with the inner tube of the second inner tube.

In some embodiments, wherein the puncture instrument is free to be withdrawn from the socket when the lug is returned to the guide slot by the keyway.

In the socket puncturing device according to various embodiments of the present application, the puncturing device is mainly fixed by the fixing seat of the protruding block and the socket member through the key groove, so that the puncturing device can be synchronously along the axis with the socket member. Move in the direction and adjust to the most appropriate position. In addition, the first sleeve assembly and the second sleeve assembly are nested with each other, and the first sleeve assembly can be received in the second sleeve assembly to expand and contract the length of the sleeve. Whether in the state of elongation or contraction, the puncture device can move synchronously with the socket and facilitate immediate adjustment, avoiding repeated destructive intrusion, avoiding the wound from expanding and reducing the pain and discomfort of the patient. And the length of the socket outside the body can be shortened, which is convenient for medical personnel to perform surgery.

1 to 2 are respectively a perspective view of an embodiment of a trocar and an exploded view of an embodiment of the puncturing device. 3 is a partial enlarged view of the fixing base and the puncture device of FIG. 2, FIG. 3A is a cross-sectional view of the puncture device of FIG. 3 not fixed to the fixed seat, and FIG. 3B is a cross-sectional view of the puncture device of FIG. 3 fixed to the fixed seat; 4 is a schematic cross-sectional view showing an embodiment of the puncturing device, FIG. 5 is a schematic cross-sectional view showing an axial movement and positioning of the puncturing device, FIG. 6 is a partial cross-sectional view of the ferrule of FIG. 5, and FIG. 7 is a view A schematic cross-sectional view of the socket of 5 in a contracted state.

As shown in FIGS. 1 and 2, the puncture device 1 includes a puncture device 10 and a socket 20. The puncture device 10 includes a base 11 and a puncture portion 13, and the puncture portion 13 extends in a direction perpendicular to the base 11. The puncture portion 13 includes a bump 131 and a tip end 133. The tip end 133 is located at the other end of the puncture portion 13 with respect to the base 11. The bump 131 extends radially outward from the outer surface of the puncture portion 13, where the bump 131 is a bump that partially protrudes radially from the outer surface of the puncture portion 13 to the outer surface of the puncture portion 13, however, this is only For example, it may be a boss whose annular outer diameter is convex on the outer surface of the puncture portion 13. The socket 20 includes a pneumatic seat 21, a first sleeve assembly 23, a second sleeve assembly 25, a mount 27, and an air bag 29.

As shown in FIG. 2, the air pressure seat 21 includes a grip 211, a connecting portion 213, and a first air valve 215. The grip 211 includes an opening 2111 through which the puncture portion 13 is inserted, and the base 11 contacts the grip 211. The connecting portion 213 is extended by the grip 211 and extends in a direction parallel to the long axis direction of the puncture portion 13. The connecting portion 213 includes an assembly channel 2131 that communicates with the opening 2111. The first air valve 215 is connected to the connecting portion 213 and communicates with the assembly passage 2131 so that the gas introduced by the first gas valve 215 can enter the assembly passage 2131.

The first sleeve assembly 23 includes a first set of ends 231 and a first sleeve end 233. The first set of ends 231 are assembled in the assembly channel 2131, and the first set of ends 231 correspond to the first valve 215. At least one first opening 2331 is defined in the wall of the first set of ends 233. The second sleeve assembly 25 includes a second set of ends 251 and a second set of ends 253. The second sleeve assembly 25 has a larger diameter than the first sleeve assembly 23, so that the second set of ends 251 are telescopically sleeved on the first sleeve end 233, so that the second sleeve assembly 25 can be opposite to the first sleeve. The tube assembly 23 is retracted such that the first sleeve assembly 23 is received in the second sleeve assembly 25. This can shorten the overall length of the first sleeve assembly 23 and the second sleeve assembly 25. It makes the subsequent operation more convenient. The fixing base 27 is fixed to the second socket end 253, and the airbag 29 is sleeved on the fixing base 27.

As shown in FIGS. 2-3, 3A and 3B, the fixing base 27 is fixed to the second socket end 253, and the fixing base 27 includes a passage 271, an inner edge wall 273, a guiding groove 275, and a key groove 277. The passage 271 extends through the mount 27 and is typically located in the center of the mount 27. The inner edge wall 273 extends from the inner wall of the fixing seat 27 toward the passage 271 to form an arc-shaped projection. The guide groove 275 is in communication with the passage 271 and adjacent to the inner edge wall 273. Here, as shown in FIG. 3, the fixing base 27 includes two inner edge walls 273 and two guiding grooves 275 adjacent to each other. This is merely an example and is not limited to this. The key groove 277 is opened in the inner edge wall 273 and communicates with the guide groove 275. The width of the key groove 277 at one end away from the guiding groove 275 is smaller than the end of the adjacent guiding groove 275. That is, the inner edge wall 273 protrudes toward the key groove 277 at the end of the key groove 277 located away from the guide groove 275 to form the stopper 2731.

When the projection 131 of the puncture device 10 can enter the holder 27 by the guide groove 275 as shown in FIG. 3A, the puncture device 10 can be freely taken out or penetrated by the holder 27. When the puncture instrument 10 is rotated as shown in FIG. 3B, the bump 131 enters the key groove 277 by the guiding groove 275, and can continue to slide until the bump 131 comes into contact with the stopper 2731 of the inner edge wall 273, thereby being no longer sustainable. Turn. At this time, the puncture device 10 is fixed to the fixing base 27. The puncture device 10 can drive the socket 20 to move along the long axis direction of the puncture portion 13. When the puncture device 10 is rotated to return the bump 131 to the guide groove 275, the puncture device 10 can be freely taken out.

As shown in FIG. 4, a portion of the puncture portion 13 is located in the assembly channel 2131, the first cannula assembly 23, the second cannula assembly 25, and the channel 271. The tip end 133 protrudes from the fixing seat 27. When the puncture device 10 is opened in the human body 500, the puncture device 10 can move the socket 20 in the longitudinal direction of the puncture portion 13 in a state of being fixed to the fixing base 27. Further, as shown in FIG. 5, after reaching the appropriate position, the air is inflated by the first air valve 215, and after the air bag 29 is inflated, the socket 20 can be fixed to the human body 500. At this time, the puncture device 10 can be rotated to exit the socket 20.

Figure 6 is a partial cross-sectional view of the socket of Figure 5, detailing the flow of gas. As shown in FIG. 6, and referring to FIGS. 2, 4, and 5, the first sleeve assembly 23 further includes a first inner tube 241 and a first outer tube 243. The first sleeve assembly region 23 is divided into a first tube wall region 23A and a second tube wall region 23B. In the first tube wall region 23A, the first outer tube 243 surrounds the first inner tube 241. In the second tube wall region 23B, the first outer tube 243 does not surround the first inner tube 241. The second sleeve assembly 25 includes a second inner tube 261 and a second outer tube 263. The second sleeve assembly 25 is divided into a third tube wall region 25A and a fourth tube wall region 25B. In the third tube wall region 25A, the second outer tube 263 surrounds the first outer tube 243. In the fourth outer tube wall region 25B, the second outer tube 263 wall surrounds the second inner tube 261. The first opening 2331 is opened in the wall of the first outer tube 243. The air outlet 279 is included in the fixing base 27. Here, between the first inner tube 241 and the first outer tube 243, between the first opening 2331, the first outer tube 243 and the second outer tube 263, between the second outer tube 263 and the second inner tube 261, And the air outlet 279 is connected to form an air flow passage. When the gas is introduced into the first air valve 25, it flows along the air flow path, and finally enters the air bag 29 via the air outlet 279, and inflates the air bag 29, and as in the state of FIG. 5, the socket 20 can be fixed to the human body. In the 500.

Referring to FIG. 7, when the puncturing device 1 has been positioned, that is, when the air bag 29 is inflated to fix the socket 20 in the human body 500, when the puncturing device 10 is withdrawn from the ferrule 20, the shank 211 can be resisted. A cannula assembly 23 is received in the second cannula assembly 25 to reduce the overall length of the exterior of the body 500. When the socket 20 is retracted, the second sleeve assembly 25 moves relative to the first sleeve assembly 23 toward the pneumatic seat 21, and the first sleeve assembly 23 is received into the second sleeve assembly 25.

In more detail, referring to FIG. 2 and FIG. 4 to FIG. 7, the trocar 1 further includes a hermetic assembly 30 located at a socket of the first sleeve assembly 23 and the second sleeve assembly 25. The airtight assembly 30 includes a stopper 31 and a gas tight sleeve 33. The stopper 31 is assembled on the first sleeve assembly 23 and adjacent to the first sleeve end 233. The airtight sleeve 33 is sleeved at the sleeve of the first sleeve assembly 23 and the second sleeve assembly 25, and the airtight sleeve 33 covers the stopper 31, so as to prevent gas from passing through the gap of the sleeve. And leaked out.

As shown in FIG. 4 to FIG. 6 , in the state in which the socket 20 is stretched, the second sleeve assembly 25 is moved away from the air pressure seat 21 relative to the first sleeve assembly 23 during stretching until the stopper 31 and the first The second sleeve assembly 25 is in contact. In more detail, after the stopper 31 comes into contact with the pipe wall of the second outer pipe 263, the second bushing assembly 25 is no longer moved away from the air pressure seat 21. As shown in FIG. 7, when the stretched state of the socket 20 is contracted, the second sleeve assembly 25 moves relative to the first sleeve assembly 23 toward the air pressure seat 21, so that the first sleeve assembly 23 is received in the second position. In the bushing assembly 25, the airtight assembly 30 is stopped until it comes into contact with the connecting portion 213.

Referring again to FIG. 2 and FIG. 4-7, the airtight assembly 30 further includes a hermetic ring 35 that is sleeved on a portion of the first sleeve assembly 23 and is in contact with the stopper 31, and the airtight ring 35 is wrapped in the airtight sleeve 33. Further achieve the airtight effect. In addition, the stopper 31 can also be a screw-type fastener, so that when the first sleeve assembly 23 is received in the second sleeve assembly 25, the sleeve is more tight and avoids falling off.

Referring again to FIGS. 2 and 4-7, the air pressure seat 21 further includes a second air valve 217. When the puncture device 10 is removed from the socket 20, the second air valve 17 charges the body 500 through the first cannula assembly 23, the second cannula assembly 25, that is, the position where the puncture device 10 is originally installed. In order to locally expand the tissue of the human body, it is convenient to carry out the insertion, observation and operation of medical equipment such as endoscopes, optical fibers and lasers. In more detail, the second gas valve 217 may be a gas switching valve that is connected to an external gas device for inflation. Further, after the surgery is completed, the first air valve 215 can be opened to deflate the air bag 29, and the socket tube 20 is taken out from the human body.

The trocar sleeve of the above embodiment can be fixed through the keyway by the protrusion of the puncturing device and the fixing seat of the socket, so that the puncturing device and the socket can move in the axial direction synchronously. Therefore, it can be adjusted to the most suitable position in time, avoiding repeated destructive invasion, avoiding the wound from expanding and reducing the pain and discomfort of the patient. In addition, the first sleeve and the assembly are sleeved with the second sleeve assembly, and the first sleeve assembly can be accommodated in the second sleeve assembly, so that the length of the sleeve is expanded and contracted, and the length outside the human body can be reduced. It is more convenient for medical personnel to perform surgery.

The preferred embodiments are disclosed above, but are not intended to limit the present invention, and those skilled in the art can make some modifications and retouchings without departing from the scope of the present invention. This is subject to the definition of the scope of the patent application attached to this specification.

1‧‧‧ puncturing device

10‧‧‧Puncture instruments

11‧‧‧Base

13‧‧‧Puncture Department

131‧‧‧Bumps

133‧‧‧ tip

20‧‧‧ Sockets

21‧‧‧pressure seat

211‧‧‧Handle

2111‧‧‧ openings

213‧‧‧Connecting Department

2131‧‧‧Assemble channel

215‧‧‧First air valve

217‧‧‧Second air valve

23‧‧‧First casing assembly

231‧‧‧The first set of joints

233‧‧‧First set of joints

2331‧‧‧ first opening

23A‧‧‧First wall area

23B‧‧‧Second wall area

241‧‧‧First inner tube

243‧‧‧First outer tube

25‧‧‧Second bushing assembly

251‧‧‧Second set of joints

253‧‧‧Second set of terminals

25A‧‧‧ Third wall area

25B‧‧‧Four wall area

261‧‧‧Second inner tube

263‧‧‧Second outer tube

27‧‧‧ Fixed seat

271‧‧‧ channel

273‧‧‧ inner wall

2731‧‧‧stop block

275‧‧‧ guiding slot

277‧‧‧ keyway

279‧‧‧ outlet

29‧‧‧Airbag

30‧‧‧Airtight components

31‧‧‧stops

33‧‧‧ airtight casing

35‧‧‧ airtight ring

500‧‧‧ human body

1 is a perspective view of an embodiment of a puncturing device; FIG. 2 is an exploded view of an embodiment of the puncturing device; FIG. 3 is a partial enlarged view of the fixing base and the puncturing device of FIG. 2; Figure 3B is a cross-sectional view of the puncture device of Figure 3; Figure 4 is a schematic cross-sectional view of an embodiment of the puncture device; Figure 5 is a schematic cross-sectional view of an embodiment of the puncture device axially moved and positioned; Figure 6 is a partial cross-sectional view of the socket of Figure 5; and Figure 7 is a cross-sectional view of the socket of Figure 5 in a collapsed state.

Claims (10)

A puncturing device comprising: a puncturing device comprising a base and a puncturing portion extending from a direction perpendicular to the base, the puncturing portion comprising a protrusion and a tip, the tip being located at the puncturing portion Relative to the other end of the base, the protrusion extends radially from the outer surface of the puncture portion; and a set of connectors comprising: a pneumatic seat including a handle, a connecting portion, and a first gas a valve, the handle includes an opening, the piercing portion is penetrated by the opening, the base contacts the handle, the connecting portion extends from the handle, and includes an assembly passage, the assembly passage is in communication with the opening, The first air valve is connected to the connecting portion and communicates with the assembly channel; a first bushing assembly includes a first set of terminals and a first socket end, and the first set of terminals is assembled to the assembly channel And the first set of terminals corresponds to the first air valve, the first socket end has at least one first opening; the second sleeve assembly includes a second set of ends and a a second set of ends, the second set of ends of the retractable sleeve In the first socket, wherein the second sleeve assembly is retractable relative to the first sleeve assembly, the first sleeve assembly is received in the second sleeve assembly; a fixing seat is fixed to the The second socket includes a channel, an inner edge wall, a guiding slot, a keyway, and an air outlet, the channel extends through the fixing seat, and the inner edge wall extends from the inner wall of the fixing seat toward the channel The guiding groove is in communication with the channel, adjacent to the inner edge wall, the key groove is defined in the inner edge wall and communicates with the guiding groove, and the width of the key groove located at an end away from the guiding groove is smaller than the adjacent One end of the guiding groove, the air outlet opening is located on a surface of the fixing seat, a part of the puncture portion is located in the assembly channel, the first sleeve assembly, the second sleeve assembly, and the passage, and the tip And protruding from the fixing seat; and an air bag, sleeved on the fixing seat, and corresponding to the air outlet, wherein when the protrusion of the puncture device enters the key groove by the guiding slot, the bump is rotated The keyway slides into contact with the inner edge wall to make the puncture device The fixing seat is fixed, and the puncture device drives the socket to move along a long axis direction of the puncture device. The puncturing device of claim 1, wherein the first sleeve assembly further comprises a first inner tube and a first outer tube, and the first sleeve assembly is divided into a first wall area and a second a wall region in which the first outer tube surrounds the first inner tube, and in the second tube wall region, the first outer tube does not surround the first inner tube, the second sleeve The assembly includes a second inner tube and a second outer tube, and the second sleeve assembly is divided into a third tube wall region and a fourth tube wall region, and the second outer tube wall region, the second outer portion The tube surrounds the first outer tube, and the second outer tube wall surrounds the second inner tube in the fourth outer tube wall region, and the first opening is opened in the tube wall of the first outer tube. The puncturing device of claim 2, wherein the first inner tube and the first outer tube, the first opening, the first outer tube and the second outer tube, and the second outer tube The air flow passages are formed between the second inner tubes and the air outlets. When a gas enters the first air valve, the gas flows along the air flow passage and enters the airbag through the air outlet. The puncturing device of claim 1, further comprising a hermetic component disposed on the first sleeve assembly and a portion of the second sleeve assembly to seal the first sleeve assembly and the second A set of joints for the casing assembly. The puncturing device of claim 4, wherein the airtight component comprises a blocking member and a gas tight sleeve, the blocking member being coupled to the first sleeve assembly and adjacent to the first socket end, The airtight sleeve is sleeved at the socket of the first sleeve assembly and the second sleeve assembly, and the airtight sleeve covers the stopper. The puncturing device of claim 5, wherein the airtight component further comprises a gas-tight ring sleeved to a portion of the first sleeve assembly and in contact with the stopper, and the airtight ring package Covered in the airtight casing. The puncturing device of claim 5, wherein when the socket is stretched, the second sleeve assembly moves away from the air pressure seat relative to the first sleeve assembly until the stopper and the second The casing assembly is in contact. The puncturing device of claim 4, wherein when the socket is retracted, the second sleeve assembly moves relative to the first sleeve assembly toward the air pressure seat, and the first sleeve assembly receives the second sleeve Among the tube assemblies, until the airtight assembly is in contact with the connecting portion. The puncturing device of claim 4, wherein the airtight component further comprises a fastener assembled to the first socket end and in contact with the inner tube of the second inner tube. The puncturing device of claim 1, wherein the puncturing device is free to be withdrawn from the ferrule when the projection is returned to the guiding slot by the keyway.