WO2025122200A1

WO2025122200A1 - Multidirectional instrument

Info

Publication number: WO2025122200A1
Application number: PCT/US2024/038120
Authority: WO
Inventors: Yu-Wei Tsai
Original assignee: Tyw Ip Holding LLC
Current assignee: Tyw Ip Holding LLC
Priority date: 2023-01-13
Filing date: 2024-07-16
Publication date: 2025-06-12
Anticipated expiration: 2026-06-04
Also published as: AU2023422659A1; WO2024151325A1; KR20250126749A; CN120344186A; EP4648665A1

Abstract

The present invention relates to a multidirectional instrument for performing intracavity surgery, comprising a hollow handle, a connecting rod having a socket connecting to the hollow handle, and a universal joint having a hollow ball head and a base, wherein the ball head is detachably and pivotally jointed to the socket of the connecting rod. The socket is composed of a first through hole and a second through hole, wherein the first through hole and the second through hole are in a staggered state of partial intersection, and the diameter of the first through hole is larger than the diameter of the second through hole. The multidirectional instrument can be better applied to the operation of the narrow cavity by providing multi-direction and quick locking and unlocking functions.

Description

MULTIDIRECTIONAL INSTRUMENT

BACKGROUND OF THE INVENTION

Related Application

This application claims priority to U.S. Provisional Patent Application Ser. No. 63/438,793, filed on Jan. 13, 2023, entitled "Noval device attaching endoscopic accessories and its method of usage in periodontal disease." U.S. Provisional Patent Application Ser. No. 63/465,540, filed on May. 11, 2023, entitled "Noval dental device with functions of direction fixation, air inflation, and suction." Each of these patent applications is herein incorporated by reference in its entirety for all purposes.

Field of the Invention

The present disclosure relates to a kind of instrument, in particular with a multidirectional instrument for dental surgery, sinus surgery or soft tissue surgery.

Description of Related Art

In the prior art, a dentist has to insert an oral endoscopy into the oral cavity to take pictures of the situation in the oral cavity. However, oral endoscopy usually only has a camera function and does not have the effect of cleaning teeth. Therefore, the dentist must often stop to check and replace instruments for different surgical steps. This step will prolong the operation time and cause discomfort to the patient and may cause bacterial infection and other disadvantages. Additionally, during surgeries involving the oral cavity, nasal cavity, or other narrow and dark body cavities, current surgical instruments or devices are unable to effectively operate multiple surgical instruments simultaneously. As a result, the surgeon (such as a doctor) must spend time switching instruments. Moreover, what concerns the surgeon more is the angle at which surgical instruments are used within the narrow cavity. Specifically, existing surgical instruments for use in narrow cavities do not have multi -directional functionality. In other words, during the surgery, the surgeon must manually adjust the direction or exert more effort to open and fixate the instruments. This not only increases the discomfort for the patient but also makes the surgical process considerably more exhausting for the surgeon. SUMMARY

Concerning the issues mentioned above, a multidirectional instrument provided in this disclosure can be used in various intracavity surgeries. The universal joint of the present invention allows it to rotate in multiple directions to reduce visual blind spots caused by insufficient space in the cavity. In addition, the present invention can also have the effect of quickly replacing, unlocking, and locking surgical instruments, thereby shortening the operation time and reducing the possibility of infection.

In accordance with this, the present invention is provided with a multidirectional instrument that is useful for performing an intracavity surgery by unlocking and locking a universal joint. The multidirectional instrument of the present invention comprises a hollow handle, a connecting rod having a front end, a back end, and a socket, wherein the back end is connected to the hollow handle, and the socket is located between the front end and the back end, and a universal joint having a hollow ball head and a base, wherein the ball head is detachably and pivotally jointed to the socket of the connecting rod. The socket is composed of a first through hole and a second through hole, wherein the first through hole and the second through hole are in a staggered state of partial intersection, and the diameter of the first through hole is larger than the diameter of the second through hole.

Preferably, the connecting rod of the connecting rod comprises an inner thread mounted inside of the connecting rod; the hollow handle has a threaded stud, and the connecting rod has internal threads, so the hollow handle can be detachably connected to the back end of the connecting rod through the stud.

Preferably, the connecting rod of the present invention further comprises a front cap and a spring that is detachably connected to the connecting rod through the internal threads.

Preferably, the front cap of the connecting rod further has a screw bolt to accommodate the internal thread of the connecting rod.

Preferably, the thread of the screw bolt of the front cap is a multiple-lead thread.

More preferably, the thread of the screw bolt of the front cap is a double thread to accommodate the spring.

Preferably, the diameter of the first through hole of the connecting rod is larger than the diameter of the half ball head and the diameter of the neck of the universal joint, and the diameter of the second through hole is equal to or slightly smaller than the diameter of the neck of the universal joint; the diameter of the second through hole is smaller than the diameter of the half ball head.

Preferably, the universal joint further comprises an operating part, the operating part is next to the opening and is configured to operate surgery.

More preferably, the operating part comprises a periodontal probe, a flat drill, a flat knife, an explorer, a spatula, a plugger, an occlusion former, a guide forceps, a periosteal elevator, a periotome, forceps, a retractor, or suction probe.

Preferably, the multidirectional instrument of the present invention further comprises at least one oral or nasal-related surgical implement accommodated in the order of the hollow handle, the connecting rod, and the universal joint.

More preferably, at least one oral or nasal-related surgical implement comprises an endoscope, an imaging device, a light source, lasers, curettes, ultrasonically-powered tips, irrigation devices, or suction devices.

In one embodiment of the present invention, the multidirectional instrument of the present invention further comprises a locating element, and the locating element further comprises a positioning hole for penetrating by the threaded stud of the hollow handle, thereby allowing the locating element to connect detachably with the hollow handle.

Preferably, the locating element of the present invention further comprises an inserting hole, wherein the inserting hole is located on one side of the locating element, and the axial direction of the inserting hole and the axial direction of the positioning hole are parallel to each other.

More preferably, the locating element further comprises an abutting part located in the inner surface of the locating element; the hollow handle further comprises a limiting part, wherein the shape of the abutting part of the positioning member corresponds to the shape of the limiting part of the hollow handle.

More preferably, the shape of the abutting part of the locating element is composed of multiple concave parts, and the shape of the limiting part of the hollow handle is composed of multiple convex parts.

More preferably, the shape of the abutting part of the locating element is composed of multiple convex parts, and the shape of the limiting part of the hollow handle is composed of multiple concave parts. Preferably, the locating element further comprises a baffle, and the baffle comprises a head, two legs, and a buckle part; two legs are disposed between the head and the abutting part, and the axial direction of the baffle is parallel to the axial direction of the positioning hole; the baffle is detachably connected to the locating element by two legs and a buckle part through the inserting hole.

More preferably, the width of the two legs can be equal to or slightly smaller than the width of the through hole; the width of the head portion is larger than the width of the inserting hole; the width of the buckle part is equal to or slightly larger than the width of the inserting hole.

In another preferable embodiment, the locating element further comprises a circular ring, an abutting part arranged around one side of the ring, and a baffle near the positioning hole, wherein the positioning hole is surrounded by the ring.

Preferably, the locating element further comprises a baffle near the positioning hole, and the axial direction of the baffle is parallel to the axial direction of the positioning hole.

Preferably, the hollow handle further comprises a limiting part, wherein the shape of the abutting part of the positioning member corresponds to the shape of the limiting part of the hollow handle.

More preferably, the shape of the limiting part of the hollow handle is serrated, and the shape of the plurality of the abutting part is also serrated, with the pitch and number of teeth of the limiting part of the hollow handle corresponding to those of the abutting parts.

In another preferable embodiment, the hollow handle of the present invention further comprises a bent end portion near the limiting part, and the bent end portion has an internal thread; the threaded stud of the front end is detachably screwed to the bent end portion via the internal thread.

Preferably, the locating element further comprises a baffle near the positioning hole, and the baffle comprises an abutment surface connected to the ring and is relative to the abutting part; the abutment surface abuts against the angled end portion of the hollow handle.

More preferably, the shape of the abutting part of the locating element is composed of multiple concave parts, and the shape of the limiting part of the hollow handle is composed of multiple convex parts. More preferably, the shape of the abutting part of the locating element is composed of multiple convex parts, and the shape of the limiting part of the hollow handle is composed of multiple concave parts.

In the other preferable embodiment, the universal joint of the present invention further comprises a slot, a slot hole, and a pin; the slot is located at one end of the base of the universal joint and near the opening; the slot hole penetrates through the slot, and the axial direction of the slot hole is parallel to the axial direction of the universal joint; the slot can accommodate a pin with different shapes through the slot hole.

Preferably, the pin includes a head, two legs, and a buckle part; the two legs are disposed between the head and the buckle part.

More preferably, the two legs can be squeezed toward each other, and the width of the two legs can be equal to or slightly smaller than the width of the plug hole; the width of the head is larger than the width of the slot hole, and the width of the buckle part is equal to or slightly larger than the width of the slot hole.

In the other preferable embodiment, the universal joint of the present invention further comprises at least three flow guide elements arranged annularly on the inner wall surface of the base and near the opening.

Preferably, the number of at least three flow guide elements is three.

More preferably, the number of at least three flow guide elements is four.

More preferably, the number of at least three flow guide elements is six.

Preferably, each flow guide element further comprises a guide groove, which is formed from the bottoms of each guide member extending toward each other, and each guide groove is perpendicular to the axis direction of the universal head.

Preferably, each flow guide element comprises a flow guide slope in an arc shape, which is formed from the inner wall surface and extends toward the direction of the opening.

More preferably, the high end of the flow guide slope faces the inner wall surface of the base, and the low end of the flow guide slope faces the opening. Preferably, at least three flow guide elements further comprise at least two guide extensions formed by extending from the high end of the flow guide slope towards the head along the inner wall, and they are oppositely arranged on the inner wall.

More preferably, the number of the flow guide elements is four, and the guide extensions are two; the two guide extensions are oppositely arranged at about 180 degrees.

More preferably, the number of the flow guide elements is six, and the guide extensions are four and arranged in pairs.

More preferably, two guide extensions are adjacent to each other to form the first pair, and the other two guide extensions are also adjacent to each other to form the second pair; the second pair is oppositely arranged relative to the first pair of guide extensions.

Preferably, the universal joint of the present invention further comprises an operating part, the operating part is next to the opening and is configured to operate surgery.

More preferably, the periosteal elevator includes De Wijs, molt, osberg, papillas, and gingival grafting periosteal elevator.

Preferably, the connecting rod further comprises a mouth and a blocking body, wherein the mouth formed of the second through hole extends to the front end, and the mouth is partially surrounded by the blocking body.

More preferably, the blocking body has a second insertion hole and a third insertion hole, wherein the second insertion hole is opposite to the mouth, and the axis direction of the third insertion hole and the axis direction of the connecting rod are parallel to each other.

More preferably, the blocking body inclines from the mouth toward the back end.

More preferably, the width of the mouth is equal to the diameter of the second through hole, and the width of the mouth is smaller than the diameter of the first through hole; the width of the mouth is smaller than the diameter of the half ball head of the universal joint.

Preferably, the multidirectional instrument of the present invention further comprises a frame, wherein the frame comprises an arcuate groove, two legs, and an abutment; the arcuate groove faces forward to the two legs, and the two legs are located between the arcuate groove and the abutment; the frame is detachably connected to the connecting rod through the second inserting hole.

More preferably, the width of the two legs is equal to or slightly smaller than the width of the second insertion hole, and the width of the abutment is equal to or slightly larger than the second insertion hole.

Other aspects and advantages of the disclosure will become apparent from the following detailed description, taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the multidirectional instrument according to the first embodiment of the present invention.

FIG. 2 is a schematic diagram of the connecting rod of the multidirectional instrument according to the first embodiment of the present invention.

FIG. 3 is an exploded view of the multidirectional instrument according to the first embodiment of the present invention.

FIG. 4A is an exploded view of the multidirectional instrument according to the first embodiment of the present invention.

FIG. 4B is a sectional view of the multidirectional instrument according to the first embodiment of the present invention.

FIG. 5A is an exploded view of the multidirectional instrument with a locating element according to a second embodiment of the present invention.

FIG. 5B is a schematic diagram of a baffle of the multidirectional instrument according to the second embodiment of the present invention.

FIG. 5C is a schematic diagram of the multidirectional instrument according to the second embodiment of the present invention.

FIG. 5D is an exploded view of the multidirectional instrument with a locating element according to the second embodiment of the present invention.

FIG. 6A is a schematic diagram of the multidirectional instrument according to a third embodiment of the present invention.

FIG. 6B is a schematic diagram of the multidirectional instrument according to the third embodiment of the present invention. FIG. 7A is a sectional view of the universal joint according to a fourth embodiment of the present invention.

FIG. 7B is a schematic diagram of the universal joint according to the fourth embodiment of the present invention.

FIG. 7C is a bottom view of the universal joint according to the fourth embodiment of the present invention.

FIG. 8A is a bottom view of the multidirectional instrument with a plurality of flow guide elements according to the fourth embodiment of the present invention.

FIG. 8B is a schematic diagram of the multidirectional surgical with an instrument operating part according to the fourth embodiment of the present invention.

FIG. 8C is a schematic diagram of the multidirectional instrument with an operating part according to the fourth embodiment of the present invention.

FIG. 9A is a schematic diagram of the connecting rod of the multidirectional instrument according to a fifth embodiment of the present invention.

FIG. 9B is a schematic diagram of a frame of the multidirectional instrument according to a fifth embodiment of the present invention.

FIG. 9C is an exploded view of the multidirectional instrument according to the fifth embodiment of the present invention.

FIG. 9D is a schematic diagram of the multidirectional instrument according to the fifth embodiment of the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The terminology used in the description presented below is intended to be interpreted in its broadest reasonable manner, even though it is used in conjunction with a detailed description of certain specific embodiments of the technology. Certain terms may even be emphasized below; however, any terminology intended to be interpreted in any restricted manner will be specifically defined as such in this Detailed Description section. Components and achievement of a borehole shield according to the present disclosure may be illustrated in the following drawings and embodiments. However, the size and shape shown on drawings for the borehole shield do not limit the features of the present disclosure. The first embodiment of the present invention provides a multidirectional intracavity instrument for narrow-space surgery, such as performing oral or nasal surgery. Please refer to FIG. 1; the first embodiment of the multidirectional instrument comprises a hollow handle 10, a connecting rod 20, and a universal j oint 30.

The hollow handle 10 has a front end 11. Preferably, the front end 11 of the hollow handle 10 has a threaded stud 111.

As shown in FIG. 2, the connecting rod 20 has a front end 21 and a back end 22, wherein the connecting rod 20 has an internal thread 221, and the back end 22 is detachably connected to the threaded stud 111 of the hollow handle 10 through the internal thread 221. Preferably, the connecting rod 20 has a shape comprising tubular, cylindrical, conic, bullet-like shape, and truncated cone. The connecting rod 20 further has a socket 23 on the side, and the socket 23 is located between the front end 21 and the back end 22. Preferably, the shape of the socket 23 is a circle or an oval. Specifically, the socket 23 is composed of a first through hole 231 and a second through hole 232, wherein the first through hole 231 and the second through hole 232 are in a staggered state of partial intersection, and the diameter DI of the first through hole 231 is larger than the diameter D2 of the second through hole 232.

As shown in FIGs. 3 and 4A, in a preferred embodiment, the connecting rod 20 further comprises a front cap 24 and a spring 25 that is detachably connected to the front cap 24. The front cap 24 has a screw bolt 241 to accommodate the internal thread 221 of the connecting rod 20. That is to say, the front end 21 of the connecting rod 20 can be detachably connected to the front cap 24 and the spring 25 through the internal thread 221. Preferably, the thread of the screw bolt 241 has a multiple-lead thread. More preferably, the screw bolt 241 has a double thread to accommodate the spring 25. The lead of a double thread with the same pitch is twice that of a single thread. That is, the double thread moves a larger distance per revolution than the single thread, which makes the adjustment and positioning of surgical instruments more rapid and precise, thus shortening the operation time. In addition, the double thread can provide a larger contact area and better stability, which can reduce looseness caused by vibration or load changes during operation, thereby increasing the stability and safety of surgical instruments during surgery. In other words, when the universal j oint 30 connects to the connecting rod 20 with a double thread of the front cap 24 and the spring 25, the elasticity of the spring 25 and the double thread of the front cap 24 can provide a faster transmission speed and flexibility so that the present invention can perform multi -angle precision surgery with buffering and higher precise in a narrow cavity.

The universal joint 30 is a hollow tube body and has a half ball head 31, a base 32, a neck 33, and an opening 34, wherein the half ball head 31 is pivotally jointed to the socket 23 of the connecting rod 20 for rotating in all directions. The neck 33 between the hollow head 31 and the base 32, wherein the diameter D3 of the neck 33 is fitted to the diameter of the socket 23 of the connecting rod 20. Specifically, the diameter DI of the first through hole 231 is larger than the diameter D4 of the half ball head 31 and the diameter D3 of the neck 33 of the universal joint 30. That is to say, the half ball head 31 and the neck 33 of the universal joint 30 can be detachably installed in the socket 23 and connected with the connecting rod 20. The opening 34 is adjacent to the base 32. Preferably, the shape of the base 32 includes but is not limited to, cylinder and elliptical cylinders.

As shown in FIGs 4A and 4B, when it is in the unlocked state, the half ball head 31 of the universal j oint 30 is inserted into the first through hole 231. Since the diameter DI of the first through hole 231 is larger than the diameter D4 of the half ball head 31 and the diameter D3 of the neck of the universal joint 30, the universal j oint 30 can be movably through the first through hole 231. When it is in the locked state, the universal joint 30 moves horizontally from the first through hole 231 toward the second through hole 232. Since the diameter D2 of the second through hole 232 is equal to or slightly smaller than the diameter D3 of the neck 33 of the universal j oint 30 and the diameter D2 of the second through hole 232 is smaller than the diameter D4 of the half ball head 31, when the universal joint 30 is inserted through the second through hole 232 and the neck 33 against the second through hole 232, the universal joint 30 is fixed in the second through hole 232 of the connecting rod 20 and it assumes a locked state. Specifically, when the neck 33 of the universal joint 30 abuts the second through hole 232 of the connecting rod 20, and the threaded stud 111 of the hollow handle 10 also abuts the hollow ball head 31, then the hollow ball head 31 of the universal joint 30 is fixed. When the universal joint 30 pivots to the connecting rod 20 but the threaded stud 111 of the hollow handle 10 is not abutting to the hollow ball head 31, then the universal joint 30 can rotate to a suitable angle or direction based on the socket 23 of the connecting rod 20 according to requirements. In this embodiment, at least one surgical instrument used in narrow cavities can be accommodated in the order of the hollow handle 10, the connecting rod 20, and the universal joint 30. Preferably, at least one surgical instrument used in narrow cavities includes but is not limited to an endoscope, an imaging device, a light source, lasers, curettes, ultrasonically-powered tips, irrigation devices, and suction devices. Such structure provides flexibility for rotating certain angles, which is difficult to observe; the dentist can observe the image of the treatment site through the endoscope directly or by the endoscope as previously disclosed. The endoscope’s size, angle, and position can be adjusted according to the patient’s condition, e.g., the location of the treatment site and the depth of the periodontal pockets.

As shown in FIG. 5A and 5B, in the second embodiment of the present invention, the multidirectional instrument further comprises a locating element 40A, and the locating element 40A is detachably connected to the hollow handle 10. The locating element 40A in this embodiment is shaped like a ring. The locating element 40A includes a positioning hole 41A and a first inserting hole 42A. The positioning hole 41 A can be penetrated by the threaded stud 111 of the hollow handle 10, and then the locating element 40A to be connected to the front end 11 of the hollow handle 10. That is to say, the locating element 40A is detachably connected with the hollow handle 10. The locating element 40A is also connected to the connecting rod 20 relative to the other end connected to the hollow handle 10. The inner surface of the locating element 40A (that is, the circumferential surface surrounding the positioning hole 41 A) has an abutting part 43A. A limiting part 12A is arranged around the front end 11 of the hollow handle 10, and the shape of the abutting part 43A of the locating member 40A corresponds to the shape of limiting part 12A. Preferably, if the shape of the abutting part 43A is composed of multiple concave parts, the shape of the limiting part 12A is composed of multiple convex parts; if the shape of the abutting part 43A is composed of multiple convex parts, the shape of the limiting part 12A is composed of multiple concave parts. The first inserting hole 42A is located on one side of the locating element 40A, and the axial direction of the first inserting hole 42A and the axial direction of the positioning hole 41A are parallel to each other.

Preferably, the locating element 40A further comprises a baffle 44A. The baffle 44A is a piece-shaped plate, which includes a head 441A, two legs 442A, and a buckle part 443A. The two legs 442A are disposed between the head 441A and the buckle part 443A, and the two legs 442A can be squeezed toward each other, so the width D5 of the two legs 442A can be equal to or slightly smaller than the width D6 of the first inserting hole 42A. The width D7 of the head 441 A is larger than the width D6 of the first inserting hole 42A, and the width D8 of the buckle part 443A is equal to or slightly larger than the width D6 of the first inserting hole 42A.

When the two legs 442A are squeezed toward each other from both outsides, the width D5 of the two legs 442 A is smaller or equal to the width D6 of the first inserting hole 42 A, and the width D8 of the buckle part 443A is equal or slightly larger to than the width D6 of the inserting hole 42A so that the two legs 442A and the buckle part 443A can pass through the inserting hole 42A. The head 431A will abut against the side of the locating element 40A relative to the hollow handle 10, and the width D8 of the buckle part 443A will rebound due to inertia and be larger than the width D6 of the first inserting hole 42A. It abuts against one end of the inserting hole 42A relative to the head 431A. That is to say, the baffle 44A is detachably connected to the locating element 40A through the first inserting hole 42A, and the radial direction of the baffle 44A is parallel to the axial direction of the first inserting hole 42A and the positioning hole 41A.

When the positioning hole 41 A is penetrated by the threaded stud 111 of the hollow handle 10, and the abutting part 43A of the positioning piece 40A abuts against the limiting piece 12 of the hollow handle 10, it thereby achieves the effect of restricting rotation between the locating element 40A and the hollow handle 10.

As shown in FIG. 5C, the multidirectional intracavity instrument further comprises a locating element 40B, and the locating element 40B is detachably connected to the hollow handle 10. The locating element 40B is shaped like a ring. The locating element 40B includes a circular ring 42B, a positioning hole 41B surrounded by the ring 42B, an abutting part 43B arranged around one side of the ring 42B, and a baffle 44B near the positioning hole 41B. The diameter of the circular ring 42B is equivalent to the diameter of the threaded stud 111 of the hollow handle 10. That is to say, the positioning hole 41B can be gone through by the threaded stud 111 of the hollow handle 10. The baffle 44B is a piece-shaped plate and is positioned adjacent to the ring 42B, and the radial direction of the baffle 44B is parallel to the axial direction of the positioning hole 41B. In this embodiment, an abutting part 43B is arranged around one side of the ring 42B, and a limiting part 12B is arranged around the vicinity of the front end 11 of the hollow handle 10. The shapes of the abutting parts 43B of the positioning piece 40B correspond to the shapes of the limiting part 12B. Preferably, if the shape of the abutting part 43B is composed of multiple concaves, then the shape of the part 12B is composed of multiple convex; if the shape of the abutting part 44B is composed of multiple convex, then the shape of the limiting part 12B is composed of multiple concaves. More preferably, the shape of the limiting part 12B is serrated, and the shape of the plurality of abutting part 43B is also serrated, with the pitch and number of teeth of the limiting part 12B corresponding to those of the abutting parts 43B.

When the positioning hole 41B is penetrated by the threaded stud 111 of the hollow handle 10, and the abutting parts 44B of the positioning piece 40B engage with the limiting part 12B of the hollow handle 10, this achieves the effect of restricting rotation between the positioning piece 40B and the hollow handle 10.

As shown in FIG. 5D, the multidirectional intracavity instrument further comprises a locating element 40C. In this embodiment, the hollow handle 10 further has a limiting part 12C near the front end 11. Specifically, the front end 11 further comprises a bent end portion 112C near the limiting part 12C, and the bent end portion 112C has an internal thread. In this embodiment, the stud 111C of the front end 11 is detachably screwed to the bent end portion 112C via its internal thread. The locating element 40C includes a positioning hole 41C formed by a circular ring 42C, an abutting part 43C is arranged around one side of the ring 42C, and a baffle 44C near the positioning hole 41C. The diameter of the circular ring 42C is equivalent to the diameter of the threaded stud 111C of the hollow handle 10. That is to say, the positioning hole 41C can be gone through by the threaded stud 111C of the hollow handle 10. In this embodiment, the abutting part 43C is arranged on one side of the ring 42C, and the baffle 44C has an abutment surface 441C connected to the ring 42C. Specifically, the abutment surface 441C is relative to the abutting part 43C. The shapes of the abutting parts 43C of the locating element 40C correspond to the shapes of the limiting part 12C. Preferably, if the shape of the abutting part 43C is composed of multiple concaves, then the shape of the part 12C is composed of multiple convex; if the shape of the abutting part 43C is composed of multiple convex, then the shape of the limiting part 12C is composed of multiple concaves. More preferably, the shape of the limiting part 12C is serrated, and the shape of the abutting parts 43C is also serrated, with the pitch and number of teeth of the limiting part 12C corresponding to those of the abutting parts 43 assembly joint.

When this embodiment is in use, the baffle 44C is used to cap on the front end 11C of the hollow handle 10, so that the abutment surface 441C abut against the angled end portion 112C of the front end 11C of the hollow handle 10. The abutting part 43C of the locating element 40C engages with the limiting part 12C of the hollow handle 10, and the positioning hole 41C connects to the bent end portion 112C. When the stud 111C of the hollow handle 10 passes through the positioning hole 41C to connect to the bent end portion 112C via the internal thread. In practical application, the abutting surface 441C can abut against the bent end portion 112C. The engagement between the abutting part 43C and the limiting part 12C restricts rotation between the positioning element 40C and the limiting part 12C of the hollow handle 10.

In the third embodiment of the present invention, as shown in FIGs. 6A and 6B, the universal j oint 30 further comprises a slot 35, a slot hole 36, and a pin 37. The slot 35 is located at one end of its base 32 and near the opening 34. The slot hole 36 penetrates through the slot 35, and the axial direction of the slot hole 36 is parallel to the axial direction of the universal joint 30. The slot 35 can accommodate a pin 37 with different shapes through the slot hole 36. Specifically, the shape of the pin 37 is like the baffle 44A of the second embodiment. More specifically, the pin 37 includes a head 371, two legs 372, and a buckle part 373. The two legs 372 are disposed between the head 371 and the buckle part 373, and the two legs 372 can be squeezed toward each other, so the width of the two legs 372 can be equal to or slightly smaller than the width of the plug hole 36. The width of the head 371 is larger than the width of the slot hole 36, and the width of the buckle part 373 is equal to or slightly larger than the width of the slot hole 36.

In this embodiment, the shape of the head 371 includes but is not limited to the differently shaped retractor. For example, in Figure 6A, the retractor has a circular shape; in Figure 6B, the retractor has a triangular shape. The shape of the retractor depends on the size of the space within the chamber and the required range of traction.

In the fourth embodiment of the present invention, as shown in FIG. 7A to 7C, the universal j oint 30 further comprises at least three flow guide elements 38 which are equally disposed on the base 32 near the opening 34. Specifically, at least three flow guide elements 38 are arranged annularly and equally on the inner wall surface of the base 32. In this embodiment, each flow guide element 38 extends in an arc shape and extends from the inner wall surface toward the direction of the opening 34 to form a flow guide slope 381. More specifically, the high end of the flow guide slope 381 faces the inner wall surface of the base 32, and the low end of the flow guide slope 381 faces the opening 34. Preferably, the bottoms of each guide member 38 extend toward each other to form a guide groove 382, and each guide groove 382 is perpendicular to the axis direction of the universal head 30. Preferably, the number of at least three flow guide elements 38 is three. Assuming the base 32 is cylindrical and the opening 34 has an imaginary center, each of the at least three flow guide elements 38 forms an imaginary straight line extending to the imaginary center, with each imaginary straight line spaced 120 degrees apart from each other. Similarly, when the number of at least three flow guide elements 38 is four, each of these elements forms an imaginary straight line extending to the imaginary center, with each imaginary straight line spaced 90 degrees apart from each other. Similarly, when the number of at least three flow guide elements 38 is six, each of these elements forms an imaginary straight line extending to the imaginary center, with each imaginary ray spaced 60 degrees apart from each other.

At least three flow guide elements 38 can assist the airflow or water flow to be guided by at least three of flow guide elements 38, ensuring that when the airflow or water flow enters through the opening 34 of the universal joint 30 and passes towards the head 31, a non-turbulent airflow or water flow is formed. In other words, at least three of flow guide elements 38 can reduce turbulence, thereby concentrating the airflow or water flow from the opening 34 towards the head 31, preventing vortex formation, increasing the flow rate, and improving the uniformity of the airflow or water flow through the opening 34. Even when the invention is applied within a cavity with limited internal space, it can still achieve the effect of fixing the direction and increasing pressure. Specifically, when at least one surgical instrument used in narrow cavities (e g., an endoscope with air and/or water flow) is accommodated in the universal joint 30, the slope 381 can guide the fluid (including gas or liquid) along the slope so that the fluid not only moves along the inner wall of the base 32 of the universal joint 30, but may also rotate around the inner wall of the base 32 to increase the mixing effect of the fluid, and the spiral airflow can reduce turbulence in the flow to increase the stability of the flow. The spiral airflow reduces turbulence in the flow and increases the stability of the flow. The guide groove 382 serves to guide the fluid (including gas or liquid) into a horizontal flow that cleans the opening 34 as well as the air or water outlet of the surgical instrument. Additionally, the fluid can flow linearly (i.e., from the opening 34 to the head 31) between each of the guide grooves 382. Overall, it can prevent the fluid from interfering with the field of view of the surgical instruments or devices, for example, endoscope, placed in the universal j oint 30 to clean or flush the lens surface, and to adjust the ratio of linear and spiral fluids (including gas or liquid) by means of the slope 381 and the guide grooves 382.

In this embodiment, as shown in FIG. 8A, at least three of flow guide elements 38 further comprises at least two guide extensions 383. These guide extensions 383 are formed by extending from the high end of the flow guide slope 381 towards the head 31 along the inner wall, and they are oppositely arranged on the inner wall. Specifically, when there are four flow guide elements 38, the number of guide extensions 383 is two, and the two guide extensions 383 are oppositely arranged (with an included angle of 180 degrees between them). Preferably, when there are six flow guide elements 38, there are four guide extensions 383, arranged in pairs. More specifically, two guide extensions 383 are adjacent to each other to form the first pair, and the other two guide extensions 383 are also adjacent to each other to form the second pair. The second pair of guide extensions 383 are oppositely arranged relative to the first pair of guide extensions 383. More preferably, when there are three flow guide elements 38, the multidirectional instrument according to the present invention does not include at least two guide extensions 383.

In a preferable embodiment, as shown in FIGs. 8B and 8C, the universal joint 30 further comprises operating part 384. The operating part 384 is next to the opening 34 and is configured to operate surgery including, but not limited to a periodontal probe, a flat drill, a flat knife, an explorer, a spatula, a plugger, an occlusion former, a guide forceps, a periosteal elevator, a periotome, forceps, a retractor, and suction probe. Preferably, the periosteal elevator includes De Wijs, molt, osberg, papillas, and gingival grafting periosteal elevator. Specifically, one of at least two guide extensions 383 is adjacent to the operating part 384. More preferably, one of at least two guide extensions 383 connects the operating part 384, and the direction of extension of the long axis of one of at least two guide extensions 383 is in a straight line with the direction of extension of the long axis of the operating part 384.

In the fifth embodiment of the present invention, as shown in FIGs. 9A to 9C, the second through hole 232 of the connecting rod 20 extends to the front end 21 and forms a mouth 233; two sides of the mouth 233 extend to form a blocking body 26. That is to say, the mouth 233 is partially surrounded by the blocking body 26. The blocking body 26 has a second insertion hole 261 opposite to the mouth 233 and a third insertion hole 262, wherein the axis direction of the third insertion hole 262 and the axis direction of the connecting rod 20 are parallel to each other. Preferably, the blocking body 26 inclines from the mouth 233 toward the back end 22. On one hand, the width D9 of the mouth 233 is equal to the diameter D2 of the second through hole 232, and the width D9 of the mouth 233 is smaller than the diameter DI of the first through hole 231. On the other hand, the width D9 of the mouth 233 is smaller than the diameter D4 of the half ball head 31 of the universal j oint. When the universal joint 30 is inserted through the first through hole 231 and then moved toward the second through hole 232 and the mouth 233, the neck 33 of the universal joint 30 abuts the mouth 233 of the connecting rod 20, the universal joint 30 is fixed in the mouth 233 of the connecting rod 20 and it is a locked state.

In this embodiment of the present invention, the multidirectional instrument further comprises a frame 50. The frame 50 comprises an arcuate groove 51, two legs 52, and an abutment 53, wherein the arcuate groove 51 faces forward to the two legs 52, and the two legs 52 are located between the arcuate groove 51 and the abutment 53. The arcuate groove 51 can accommodate, including but not limited to, a suction device. The two legs 52 have a width of D10; the abutment 53 has a width of Dll, wherein the width of D10 of the two legs 52 is equal to or slightly smaller than the width of D12 of the second insertion hole 261, and the width of Dll of the abutment 53 is equal to or slightly larger than the second insertion hole 261.

When the two legs 52 are squeezed toward each other from both outsides, the width D10 of the two legs 52 is smaller or equal to the width Dll of the second inserting hole 261, and the width Dll of the abutment 53 is equal to the width D12 of the second insertion hole 261 so that the two legs 52 and the abutment 53 can pass through the second inserting hole 261. The arcuate groove 51 will abut against the second insertion hole 261, and the width Dll of the abutment 53 will rebound due to inertia and be larger than the width D12 of the second insertion hole 261 and the abutment 53 slightly protrude from the third insertion hole 262. That is to say, the frame 50 is detachably connected to the connecting rod 20 through the second inserting hole 261.

As shown in FIG.9D, when this embodiment is implemented, at least one surgical instrument used in narrow cavities can be accommodated in the order of the hollow handle 10, the connecting rod 20, and the universal j oint 30. Preferably, at least one surgical instrument used in narrow cavities includes but is not limited to an endoscope, an imaging device, a light source, lasers, curettes, ultrasonically-powered tips, and irrigation devices; the suction device can be accommodated in the arcuate groove 51 and slightly protrude from the third insertion hole 262. When surgery is performed, the blocking body 26 can be used as a blocking plate or retractor. The suction device can be used to absorb excess liquid (such as blood, tissue fluid, or saliva) and/or moisture on the blocking body 26 by slightly protruding 262.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the novel principles and subject matter disclosed herein may be applied to other embodiments without the use of the innovative faculty. The claimed subject matter set forth in the claims is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. It is contemplated that additional embodiments are within the spirit and true scope of the disclosed subject matter. Thus, it is intended that the present disclosure covers modifications and variations that come within the scope of the appended claims and their equivalents. While the disclosure has been described with respect to a limited number of embodiments, those skilled in the art, having the benefit of this disclosure, will appreciate that other embodiments can be advised and achieved which do not depart from the scope of the description as disclosed herein. Furthermore, the embodiments disclosed in the present invention are not limited to the field of surgical instruments shown herein. That is, the instruments disclosed herein may be made to be used in any application for confined space implementation and use.

Claims

WHAT IS CLAIMED IS:

1. A multidirectional instrument for intracavity surgery comprising: a hollow handle, a connecting rod has a front end, a back end, and a socket, wherein the back end is connected to the hollow handle, and the socket is located between the front end and the back end, a universal joint has a hollow ball head, a base, and an opening, wherein the ball head is detachably and pivotally jointed to the socket of the connecting rod, and the opening is adjacent to the base; wherein the socket is composed of a first through hole and a second through hole, the first through hole and the second through hole are in a staggered state of partial intersection, and the diameter of the first through hole is larger than the diameter of the second through hole.

2. The multidirectional instrument of claim 1, wherein the connecting rod further comprises an internal thread mounted inside of the connecting rod; the hollow handle comprises a threaded stud that can be detachably connected to the back end of the connecting rod through the threaded stud screwing the internal threads of the connecting rod.

3. The multidirectional instrument of claim 2, wherein the connecting rod further comprises a front cap and a spring detachably connecting to the connecting rod through the internal threads.

4. The multidirectional instrument of claim 3, wherein the front cap of the connecting rod further has a screw bolt to accommodate the internal thread of the connecting rod.

5. The multidirectional instrument of claim 4, wherein the thread of the screw bolt of the front cap is a multiple-lead thread.

6. The multidirectional instrument of claim 4, wherein the thread of the screw bolt of the front cap is a double thread to accommodate the spring.

7. The multidirectional instrument of claim 1, wherein the diameter of the first through hole of the connecting rod is larger than the diameter of the half ball head and the diameter of the neck of the universal joint, and the diameter of the second through hole is equal to or slightly smaller than the diameter of the neck of the universal joint; the diameter of the second through hole is smaller than the diameter of the half ball head.

8. The multidirectional instrument of claim 1, wherein the universal j oint further comprises an operating part, the operating part is next to the opening and is configured to operate surgery.

9. The multidirectional instrument of claim 8, wherein the operating part comprises a periodontal probe, a flat drill, a flat knife, an explorer, a spatula, a plugger, an occlusion former, a guide forceps, a periosteal elevator, a periotome, forceps, a retractor, or suction probe.

10. The multidirectional instrument of claim 1 further comprises at least one oral or nasal-related surgical implement accommodated in the order of the hollow handle, the connecting rod, and the universal joint.

11. The multidirectional instrument of claim 10, wherein at least one oral or nasal- related surgical implement comprises an endoscope, an imaging device, a light source, lasers, curettes, ultrasonically-powered tips, irrigation devices, or suction devices.

12. The multidirectional instrument of claim 1 further comprises a locating element, and the locating element further comprises a positioning hole for penetrating by the threaded stud of the hollow handle; the locating element detachably connects to the hollow handle.

13. The multidirectional instrument of claim 12, wherein the locating element further comprises an inserting hole, wherein the inserting hole is located on one side of the locating element, and the radial direction of the inserting hole and the axial direction of the positioning hole are parallel to each other.

14. The multidirectional instrument of claim 12, wherein the locating element further comprises an abutting part located in the inner surface of the locating element; the hollow handle further comprises a limiting part, wherein the shape of the abutting part of the positioning member corresponds to the shape of limiting part of the hollow handle.

15. The multidirectional instrument of claim 14, wherein the shape of the abutting part of the locating element is composed of multiple concave parts, and the shape of the limiting part of the hollow handle is composed of multiple convex parts.

16. The multidirectional instrument of claim 14, wherein, the shape of the abutting part of the locating element is composed of multiple convex parts, and the shape of the limiting part of the hollow handle is composed of multiple concave parts.

17. The multidirectional instrument of claim 14, wherein the locating element further comprises a baffle comprising a head, two legs, and a buckle part; two legs are disposed between the head and the abutting part, and the axial direction of the baffle is parallel to the axial direction of the positioning hole; the baffle is detachably connected to the locating element by two legs and a buckle part through the inserting hole.

18. The multidirectional instrument of claim 17, wherein the width of the two legs can be equal to or slightly smaller than the width of the through hole; the width of the head portion is larger than the width of the inserting hole; the width of the buckle part is equal to or slightly larger than the width of the inserting hole.

19. The multidirectional instrument of claim 14, wherein the locating element further comprises a circular ring, an abutting part is arranged around one side of the ring, and a baffle near the positioning hole, wherein the positioning hole is surrounded by the ring.

20. The multidirectional instrument of claim 19, wherein the locating element further comprises a baffle near the positioning hole, and the radial direction of the baffle is parallel to the axial direction of the positioning hole.

21. The multidirectional instrument of claim 19, wherein the hollow handle further comprises a limiting part, wherein the shape of the abutting part of the positioning member corresponds to the shape of the limiting part of the hollow handle.

22. The multidirectional instrument of claim 21, wherein the shape of the limiting part of the hollow handle is serrated, and the shape of the plurality of abutting part is also serrated, with the pitch and number of teeth of the limiting part of the hollow handle corresponding to those of the abutting parts.

23. The multidirectional instrument of claim 14, wherein the hollow handle further comprises a bent end portion near the limiting part, and the bent end portion has an internal thread; the threaded stud of the front end is detachably screwed to the bent end portion via the internal thread.

24. The multidirectional instrument of claim 23, wherein the locating element further comprises a baffle near the positioning hole, and the baffle comprises an abutment surface connected to the ring and is relative to the abutting part; the abutment surface abuts against the angled end portion of the hollow handle.

25. The multidirectional instrument of claim 23, wherein the shape of the abutting part of the locating element is composed of multiple concave parts, and the shape of the limiting part of the hollow handle is composed of multiple convex parts.

26. The multidirectional instrument of claim 23, wherein the shape of the abutting part of the locating element is composed of multiple convex parts, and the shape of the limiting part of the hollow handle is composed of multiple concave parts.

27. The multidirectional instrument of claim 23, wherein the shape of the limiting part of the hollow handle is serrated, and the shape of the plurality of the abutting part is also serrated, with the pitch and number of teeth of the limiting part of the hollow handle corresponding to those of the abutting parts.

28. The multidirectional instrument of claim 1, wherein the universal j oint further comprises a slot, a slot hole, and a pin; the slot is located at one end of the base of the universal joint and near the opening; the slot hole penetrates through the slot, and the axial direction of the slot hole is parallel to the axial direction of the universal joint; the slot can accommodate a pin with different shapes through the slot hole.

29. The multidirectional instrument of claim 28, wherein the pin includes a head, two legs, and a buckle part; the two legs are disposed between the head and the buckle part.

30. The multidirectional instrument of claim 29, wherein the two legs can be squeezed toward each other, and the width of the two legs can be equal to or slightly smaller than the width of the plug hole; the width of the head is larger than the width of the slot hole, and the width of the buckle part is equal to or slightly larger than the width of the slot hole.

31. The multidirectional instrument of claim 30, wherein the shape of the head is circular or triangular.

32. The multidirectional instrument of claim 1, wherein the universal j oint further comprises at least three flow guide elements arranged annularly and equally on the inner wall surface of the base and near the opening.

33. The multidirectional instrument of claim 32, wherein the number of at least three flow guide elements is three.

34. The multidirectional instrument of claim 32, wherein the number of at least three flow guide elements is four.

35. The multidirectional instrument of claim 32, wherein the number of at least three flow guide elements is six.

36. The multidirectional instrument of claim 32, wherein each flow guide element further comprises a guide groove, which is formed from the bottoms of each guide member extending toward each other, and each guide groove is perpendicular to the axis direction of the universal head.

37. The multidirectional instrument of claim 32, wherein each flow guide element comprises a flow guide slope in an arc shape, which is formed from the inner wall surface and extends toward the direction of the opening.

38. The multidirectional instrument of claim 37, wherein the high end of the flow guide slope faces the inner wall surface of the base, and the low end of the flow guide slope faces the opening.

39. The multidirectional instrument of claim 34, wherein at least three flow guide elements further comprise at least two guide extensions formed by extending from the high end of the flow guide slope towards the head along the inner wall, and they are oppositely arranged on the inner wall.

40. The multidirectional instrument of claim 39, wherein the number of the flow guide elements is four, and the guide extensions are two; the two guide extensions are oppositely arranged at about 180 degrees.

41. The multidirectional instrument of claim 40, wherein two guide extensions are adjacent to each other to form the first pair, and the other two guide extensions are also adjacent to each other to form the second pair; the second pair is oppositely arranged relative to the first pair of guide extensions.

42. The multidirectional instrument of claim 39, wherein the number of the flow guide elements is six, and the guide extensions are four and arranged in pairs.

43. The multidirectional instrument of claim 39, wherein the universal j oint further comprises an operating part, the operating part is next to the opening and is configured to operate surgery; one of at least two guide extensions is adjacent to the operating part.

44. The multidirectional instrument of claim 43, wherein the operating part comprises a periodontal probe, a flat drill, a flat knife, an explorer, a spatula, a plugger, an occlusion former, a guide forceps, a periosteal elevator, a periotome, forceps, a retractor, or suction probe.

45. The multidirectional instrument of claim 44, wherein the periosteal elevator includes De Wij s, molt, osberg, papillas, and gingival grafting periosteal elevator.

46. The multidirectional instrument of claim 39, wherein one of at least two guide extensions connects the operating part, and the direction of extension of the long axis of one of at least two guide extensions is in a straight line with the direction of extension of the long axis of the operating part.

47. The multidirectional instrument of claim 1, wherein the connecting rod further comprises a mouth and a blocking body, wherein the mouth formed of the second through hole extends to the front end, and the mouth is partially surrounded by the blocking body.

48. The multidirectional instrument of claim 47, wherein the blocking body has a second insertion hole and a third insertion hole, wherein the second insertion hole is opposite to the mouth, and the axis direction of the third insertion hole and the axis direction of the connecting rod are parallel to each other.

49. The multidirectional instrument of claim 48, wherein the blocking body inclines from the mouth toward the back end.

50. The multidirectional instrument of claim 49, wherein the width of the mouth is equal to the diameter of the second through hole, and the width of the mouth is smaller than the diameter of the first through hole; the width of the mouth is smaller than the diameter of the half ball head of the universal joint.

51. The multidirectional instrument of claim 50 further comprises a frame, wherein the frame comprises an arcuate groove, two legs, and an abutment; the arcuate groove faces forward to the two legs, and the two legs are located between the arcuate groove and the abutment; the frame is detachably connected to the connecting rod through the second inserting hole.

52. The multidirectional instrument of claim 51, wherein the width of the two legs is equal to or slightly smaller than the width of the second insertion hole, and the width of the abutment is equal to or slightly larger than the second insertion hole.