CN115475047A

CN115475047A - Glass cutting handle

Info

Publication number: CN115475047A
Application number: CN202211151121.7A
Authority: CN
Inventors: 杨人权; 陈齐欧; 张劼; 常兆华
Original assignee: Minimally Invasive Vision Medical Technology Shanghai Co ltd
Current assignee: Minimally Invasive Vision Medical Technology Shanghai Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-16

Abstract

The invention provides a glass cutting handle which comprises an air guide piece, a first guide piece, a second guide piece, a first through hole and a sealing cavity, wherein the first guide piece extends from the first end of the air guide piece to be communicated with the sealing cavity; the second air guide channel is provided with a turning part, the turning part enables the second air guide channel to extend from the first end to the other side of the sealing cavity to be communicated with the sealing cavity, the turning part is positioned on the upper surface of the other side of the sealing cavity, and the first through hole is communicated with the sealing cavity from the second end of the air guide piece; the driving piece is movably arranged in the sealing cavity; the probe comprises an outer probe and an inner probe, the inner probe is slidably arranged in the outer probe, and the inner probe is connected with the driving piece through a first through hole; when the first gas guide channel guides gas, the driving piece moves towards the second end direction to drive the inner probe to move forwards, and when the second gas guide channel guides gas, the driving piece moves towards the first end direction to drive the inner probe to move backwards. The invention improves the air exchange efficiency of the air guide piece and ensures the cutting efficiency of the glass cutting handle.

Description

Glass cutting handle

Technical Field

The invention relates to the technical field of medical instruments, in particular to a glass cutting handle.

Background

The glass cutting handle has wide application scenes in minimally invasive ophthalmic surgery. For example, in some anterior segment cataract surgery, the posterior capsule carrying the lens is ruptured and the vitreous behind the capsule escapes through the tear. The vitreous body is a transparent viscoelastic filamentous material and is connected with the retina. If the overflowing vitreous body is not removed in time, the suction disturbance can draw the retina, so blindness is caused. In more complex posterior segment surgery, such as vitreous hemorrhage, retinal detachment, macular hole, etc., a vitrectomy handle becomes an indispensable key surgical instrument. In addition to cutting the vitreous, some of the cortex and debris from the procedure is also removed using a glass cutting handle.

The desk-top glass of the pneumatic broken end of current binary channels cuts handle structure is comparatively complicated to the air guide channel is located the cavity and leads to the inner space of handle less, and the passageway length and the angle of turning to of cavity are less, make gas entering cavity turn to more anxious, under the state of taking a breath at a high speed, lead to gas entering or discharge smoothly easily, thereby influence cutting efficiency.

Disclosure of Invention

The invention aims to provide a glass cutting handle, which improves the air exchange efficiency of an air guide piece and ensures the cutting efficiency of the glass cutting handle.

In order to achieve the above object, in a first aspect, the present invention provides a glass-cutting handle, including an air guide having a first air guide channel, a second air guide channel, a first through hole, and a sealing chamber, wherein the first air guide channel extends from a first end of the air guide to one side of the sealing chamber and is communicated with the sealing chamber; the second air guide channel is provided with a turning part, the turning part enables the second air guide channel to extend from the first end to the other side of the sealed cavity to be communicated with the sealed cavity, the turning part is positioned on the upper surface of the other side of the sealed cavity, and the first through hole is communicated with the sealed cavity from the second end of the air guide piece; the driving piece is movably arranged in the sealing cavity; the probe comprises an outer probe and an inner probe, the inner probe is slidably arranged in the outer probe, the outer probe is connected with the second end, and the inner probe is connected with the driving piece through the first through hole; when the first gas guide channel guides gas, the driving piece moves towards the second end direction to drive the inner probe to move forwards, and when the second gas guide channel guides gas, the driving piece moves towards the first end direction to drive the inner probe to move backwards.

Optionally, the air guide further includes a suction channel, the suction channel is communicated with the sealing cavity from the first end, and the suction channel is disposed coaxially with the first through hole; a driving shaft is arranged on the side edge of the driving part, a second through hole is formed in the driving shaft, the second through hole penetrates through the driving part, and the driving shaft penetrates through the suction channel; the inner probe is provided with a discharge hole along the axial direction, and the discharge hole is communicated with the second through hole.

Optionally, the device further comprises a connecting piece; the connecting piece has first mounting hole and the second mounting hole of coaxial setting, just first mounting hole with the second mounting hole switches on, first mounting hole with interior probe connection, the second mounting hole with the drive shaft is connected.

Optionally, the connecting rod is provided with a third through hole along the axial direction thereof, one end of the connecting rod is connected with the second end, and the third through hole is communicated with the first through hole; the connecting piece is positioned in the third through hole and is used for connecting the inner probe and the driving shaft; one end of the outer probe is connected with the other end of the connecting rod.

Optionally, the connecting rod has a rod body and a fixing portion, the third through hole is formed in the rod body, the fixing portion is provided with a connecting hole, one end surface of the fixing portion is provided with an installation groove, the connecting hole conducts the installation groove, one end surface of the rod body is provided with a convex portion, the installation groove is in adaptive connection with the convex portion, and the convex portion is provided with a transition hole to conduct with the third through hole; the outer probe is connected with the connecting hole, and the other end of the rod body is connected with the second end.

Optionally, a first seal; the convex part is provided with a first accommodating groove, and the transition hole is arranged at the bottom of the first accommodating groove and communicated with the third through hole; the first sealing element is located in the first accommodating groove, and the outer side wall of the outer probe is sleeved with the first sealing element.

Optionally, the suction device further comprises a sealing assembly located in the suction channel, wherein the sealing assembly comprises a first sealing ring, a second sealing ring and a sealing sleeve; a second accommodating groove is formed in the top of the sealing cavity, the second accommodating groove is communicated with the suction channel, and the sealing assembly is arranged in the second accommodating groove; the driving shaft is located on two side edges of the driving piece, and the outer side wall of the driving shaft located in the second containing groove is sequentially sleeved with the first sealing ring, the sealing sleeve and the second sealing ring.

Optionally, a third sealing ring is further included; a third accommodating groove is formed in the bottom of the sealing cavity, and the first channel is communicated with the third accommodating groove; the third sealing ring is located in the third accommodating groove and sleeved on the driving shaft.

Optionally, the driving member has a first elastic portion, a second elastic portion and a movable portion; the first elastic part is annularly arranged on the outer side of the movable part; the second elastic part is annularly arranged on the outer side of the first elastic part, is connected with the inner side wall of the sealed cavity and divides the sealed cavity into a first cavity and a second cavity; wherein the first chamber is in communication with the first air guide channel and the second chamber is in communication with the second air guide channel.

Optionally, the air guide member includes a first cover body and a second cover body, and the first cover body and the second cover body are detachably connected; the first end is located on the first cover body, the second end and the first through hole are located on the second cover body, and the first cover body and the second cover body cover to form the sealed cavity.

Optionally, the device further comprises a shell; the casing has the chamber that holds that switches on its both ends, the air guide is located hold the chamber, and be located the one end of casing, the part of probe is located hold the intracavity.

Optionally, the outer probe includes an end part and a probe body, and the end part is drilled and then welded with the probe body to form the outer probe; and a cutting suction port is formed in the outer side wall of the end part, and the inner probe is matched with the cutting suction port for cutting when moving.

The invention has the beneficial effects that: set up first air guide channel and second air guide channel at the air guide piece, because the second air guide channel has the portion of turning to, the portion of turning to makes the second air guide channel extend to the opposite side and the seal chamber of seal chamber from first end and switch on, just turn to the opposite side upper surface that the position is located the seal chamber, can make the distance of first air guide channel become long and turn to the angle grow, make gaseous entering and discharge all comparatively smooth and easy, improved the efficiency that the air guide piece was taken a breath to the cutting efficiency of glass cutting handle has been guaranteed.

Drawings

FIG. 1 is a schematic structural view of a glass cutting handle according to an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of a glass-cut handle provided by the present invention;

FIG. 3 is a front view and a cross-sectional view at B-B of an air guide of an embodiment provided by the present invention;

FIG. 4 is a schematic structural view of the embodiment of the present invention after the housing is removed from the skiving handle;

FIG. 5 isbase:Sub>A cross-sectional view taken at A-A of FIG. 4;

FIG. 6 is a schematic view of a driving member according to an embodiment of the present invention;

FIG. 7 is an elevation view and a cross-sectional view at D-D of an embodiment of a connector provided by the present invention;

FIG. 8 is an elevation view and a cross-sectional view at C-C of an embodiment connecting rod provided by the present invention;

FIG. 9 is an exploded view of a connecting rod according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an exemplary probe according to the present invention.

Reference numerals are as follows:

a housing 100; the air guide member 200, the first air guide channel 201, the second air guide channel 202, the first through hole 203, the sealing cavity 204, the suction channel 205, the second receiving groove 206, the turning part 207, the third receiving groove 208, the first end 210 and the second end 220; an actuator 300, a drive shaft 301, a second through hole 302, a first elastic portion 303, a second elastic portion 304, and a movable portion 305; probe 400, outer probe 410, tip 411, probe body 412, incised aspiration port 413, inner probe 420; a connector 500, a first mounting hole 501 and a second mounting hole 502; the connecting rod 600, the rod body 610, the third through hole 611, the convex part 612, the transition hole 613, the first accommodating groove 614, the fixing part 620, the connecting hole 621 and the mounting groove 622; first seal 700, seal assembly 710, first seal 711, second seal 712, seal 713, third seal 720.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

In view of the problems of the prior art, an embodiment of the present invention provides a glass-cutting handle, which is shown in fig. 1 and 2, and includes a housing 100, an air guide 200, a driving member 300, and a probe 400. Wherein the housing 100 has an accommodating chamber communicating both ends thereof. The part of the air guide 200 is arranged in the accommodating cavity, the air guide 200 is positioned at one end of the shell 100, the part of the probe 400 is positioned in the accommodating cavity, and the probe 400 is positioned at the other end of the shell 100.

In addition, as shown in fig. 3, the air guide 200 has a first air guide channel 201, a second air guide channel 202, a first through hole 203, and a sealing chamber 204, and the two ends of the air guide 200 are a first end 210 and a second end 220, respectively. The middle part of the air guide member 200 is provided with a sealing cavity 204, the first air guide channel 201 extends from the first end 210 of the air guide member 200 to the bottom of the sealing cavity 204 and is communicated with the sealing cavity 204, and the first air guide channel 201 is arranged close to the outer side wall of the main structure of the air guide member 200. The second gas guide channel 202 extends from the first end 210 of the gas guide 200 to the top of the sealed cavity 204 and is in communication with the sealed cavity 204. The first through hole 203 is communicated with the sealed cavity 204 from the second end 220 of the air guide 200.

It should be noted that the air guide member 200 includes a first cover and a second cover, and the first cover and the second cover are detachably connected to facilitate the installation of the driving member 300. The first end 210 is located on the first cover, the second end 220 and the first through hole 203 are located on the second cover, and the first cover and the second cover are covered to form the sealed cavity 204. In addition, the first cover body and the second cover body are integrally formed in an injection molding mode, so that on one hand, materials are saved, and the injection molding defect caused by overlarge thickness change is reduced. On the other hand, the core-pulling structure is required to be introduced for injection molding of the second air guide channel 202, and the steering angle of the second air guide channel 202 is large in the scheme, so that the core-pulling structure is easier to disengage, the design of the mold is simplified, the quality of a product is guaranteed, and the cost is reduced.

The driving member 300 is movably disposed in the sealing cavity 204, when the first gas guiding channel 201 guides gas into the sealing cavity 204, the driving member 300 is pushed to move toward the second end 210, and when the second gas guiding channel 202 guides gas, the driving member 300 moves toward the first end 220.

Specifically, the driving member 300 has a first elastic portion 303, a second elastic portion 304, and a movable portion 305. The first elastic portion 303 is annularly arranged on the outer side of the movable portion 305, the second elastic portion 304 is annularly arranged on the outer side of the first elastic portion 303, the second elastic portion 304 is connected with the inner side wall of the sealed cavity 204 and divides the sealed cavity 204 into a first cavity and a second cavity, wherein the first cavity is communicated with the first air guide channel 201, and the second cavity is communicated with the second air guide channel 202.

The probe 400 includes an outer probe 410 and an inner probe 420, the outer probe 410 has a sliding channel (not shown) on one end surface along the axial direction thereof, the inner probe 420 is slidably disposed in the sliding channel, the outer probe 410 is fixedly connected to the air guide 200, and the inner probe 420 is fixedly connected to the driving member 300 through the first through hole 203. The final effect is that the outer probe 410 remains stationary and the inner probe 420 moves back and forth with the driving member 300 during the gas exchange driving, thereby achieving the relative cutting movement of the inner and outer probes.

In this embodiment, referring to fig. 3 to 5, the first air guide channel 201 and the second air guide channel 202 are respectively conducted to the bottom and the top of the sealed cavity 204, because the second air guide channel 202 has the turning portion 207, the turning portion 207 enables the second air guide channel 202 to extend from the first end 210 to the other side of the sealed cavity 204 to be conducted with the sealed cavity 204, and the turning portion 207 is located on the upper surface of the other side of the sealed cavity 204, so that the distance of the first air guide channel 201 is increased and the turning angle is increased, thereby the gas entering and discharging are smooth, the efficiency of the gas exchange of the gas guide member 200 is improved, when the gas is introduced into the first air guide channel 201, the driving member 300 moves towards the first end 210 to drive the inner probe 420 to move back, and when the gas is introduced into the second air guide channel 202, the driving member 300 moves towards the second end 220 to drive the inner probe 420 to move forward. Since the outer side wall of the outer probe 410 is provided with the cutting suction port 413, the cutting suction port 413 has cutting and suction functions, and the inner probe 420 has a cutting edge which is matched with the cutting suction port 413 for cutting when the inner probe 420 moves.

Optionally, referring to fig. 3 to 6, the air guide 200 further includes a suction channel 205, the suction channel 205 is communicated to the sealing cavity 204 from the first end 210, and the suction channel 205 is coaxially disposed with the first through hole 203. A driving shaft 301 extends from both sides of the driving member 300, a second through hole 302 is formed in the driving shaft 301 along the axial direction thereof, and the second through hole 302 penetrates through the driving member 300. A part of the driving shaft 301 is located in the suction passage 205, so that the second through hole 302 communicates with the suction passage 205. The inner probe 420 is provided with a discharge hole along an axial direction thereof, the discharge hole is communicated with the cutting suction port 413, and one end of the inner probe 420 is connected with the driving shaft 301 to communicate the discharge hole with the second through hole 302.

In this embodiment, after the inner probe 420 and the outer probe 410 are cut in cooperation, the liquid and the vitreous humor in the eye are extracted from the extraction channel 205 through the cutting extraction port 413, the discharge hole and the extraction channel 205.

Specifically, as shown in fig. 7, the vitrectomy handle further comprises a connecting member 500, the connecting member 500 is provided with a first mounting hole 501 and a second mounting hole 502 which are coaxially arranged, the first mounting hole 501 is communicated with the second mounting hole 502, the diameter of the first mounting hole 501 is the same as the outer diameter of the inner probe 420, one end of the inner probe 420 is inserted into the first mounting hole 501, and the inner probe can be connected in a manner of being matched with glue for fixing connection or being connected with an injection molding insert. The diameter of the second mounting hole 502 is the same as the outer diameter of the driving shaft 301, and one end of the driving shaft 301 is inserted into the second mounting hole 502 and can be fixedly connected by matching with glue.

It should be noted that, because the size of the inner probe 420 for cutting the vitreous body is small, in order to ensure a sufficient suction flow rate, the wall of the inner probe 420 is made of an ultra-thin wall, which results in a limitation in the rigidity of the inner probe 420. If the inner probe 420 is directly connected to the driving member 300, the length of the inner probe 420 is excessively long, and the inner probe 420 may be bent in the vitrectomy handle during movement, thereby failing to perform a cutting function.

Moreover, if the drive shaft 301 is directly connected to the inner probe 420, the assembly is performed while ensuring the coaxiality between the drive shaft 301 and the inner probe 420 and the smoothness of the inner passage, so that the vitreous humor to be sucked can enter the suction passage 205 along the inside. The need to precisely control the axial positioning between the drive shaft 301 and the inner probe 420 directly affects the length of the handle and the chosen length of the probe, and whether the cutting action of the probe tip is possible. In order to achieve the cutting action, it is desirable that the size of the cutting suction port 413 of the outer probe 410 be precisely matched to the amplitude of the drive member 300 in the sealed chamber 204, the relative position between the drive shaft 301 and the inner probe 420, and the initial axial relative position of the inner probe 420 and the outer probe 410. The amplitude of the drive member 300 in the sealed chamber 204 can be controlled by a hard detent structure, and the connection and location between the drive shaft 301 and the inner probe 420 and the location of the outer probe 410 when assembled with the inner probe 420 is very difficult.

In this embodiment, the operator only needs to place the drive shaft 301 and the inner probe 420 at the position where the connecting member 500 can not be pushed in, and the fixing glue is used for fixing without using an auxiliary tool for adjustment, and the inner probe 420 and the drive shaft 301 are fixed by the connecting member 500, so that the assembly time is shortened, the yield is improved, the structure is simple and reliable, the relative position of the inner probe 420 and the driving member 300 is ensured, and the falling off caused by the stress and the service time is avoided.

Optionally, referring to fig. 8 and 9, the vitrectomy handle further includes a connecting rod 600, a third through hole 611 is disposed along an axial direction of the connecting rod 600, one end of the connecting rod 600 is inserted into the second end 220, so that the third through hole 611 is communicated with the first through hole 203, and the third through hole 611 is disposed coaxially with the first through hole 203. The connector 500 is located in the third through hole 611 for connecting the inner probe 420 and the drive shaft 301. One end of the outer probe 410 is fixedly connected with the other end of the connecting rod 600.

Further, the connecting rod 600 has a rod body 610 and a fixing portion 620, the third through hole 611 is disposed on the rod body 610, the fixing portion 620 is provided with a connecting hole 621, a mounting groove 622 is disposed on one end surface of the fixing portion 620, and the connecting hole 621 conducts the mounting groove 622. The end face of the rod body 610 close to the fixing portion 620 is provided with a convex portion 612, the mounting groove 622 is matched with the convex portion 612 and is connected together in a glue-assisted mode, the convex portion 612 is provided with a transition hole 613 which is communicated with the third through hole 611, and the diameter of the transition hole 613 is larger than that of the inner probe 420. The outer probe 410 is connected to the connection hole 621, the outer probe 410 and the fixing portion 620 can be combined into a single piece by injection molding and encapsulation, and the other end of the rod 610 is connected to the second end 220.

It should be noted that due to the tight control of the relative positions of the outer probe 410 and the inner probe 420, and the tolerances inherent in part manufacturing, there is often fine tuning between the outer probe 410 and the inner probe 420 at the final stage of the assembly process. The outer probe 410 itself is small in size and thin in wall, so that the outer probe 410 is difficult to be clamped by the clamping mechanism and is easily damaged in the clamping process. In this embodiment, the outer probe 410 and the fixing portion 620 are manufactured together, and at the final stage of assembly, the distance between the rod 610 and the second end 220 is finely adjusted, so that the relative distance between the outer probe 410 and the inner probe 420 is finely adjusted, and the fine adjustment manner is simpler and more reliable.

Optionally, the glass-cut handle further comprises a first seal 700. The protrusion 612 is formed with a first receiving groove 614, and the transition hole 613 is formed at the bottom of the first receiving groove 614 and is communicated with the third through hole 611. The first sealing member 700 is located in the first receiving groove 614, an outer diameter of the first sealing member 700 is the same as an inner diameter of the first receiving groove 614, and the first sealing member 700 is sleeved on an outer sidewall of the inner probe 420.

In this embodiment, the first sealing member 700 is a sealing ring, and by providing the first sealing member 700, the coaxiality between the inner probe 420 and the outer probe 410 during the movement process is ensured, and the inner probe 420 is supported to prevent deformation during the movement process.

Optionally, referring to fig. 5, the glass-cut handle further includes a sealing assembly 710 located in the suction channel 205, the top of the sealing cavity 204 is provided with a second receiving groove 206, the second receiving groove 206 is communicated with the suction channel 205, and the sealing assembly 710 is located in the second receiving groove 206. The sealing assembly 710 includes a first sealing ring 711, a second sealing ring 712 and a sealing sleeve 713, and the first sealing ring 711, the sealing sleeve 713 and the second sealing ring 712 are sequentially sleeved on the outer side wall of the driving shaft 301 located in the suction passage 205.

In the present embodiment, by providing the sealing member 710, the airtightness of the sealing chamber 204 in the alternate ventilation state is ensured, the possibility of gas entering the liquid suction channel 205 is prevented, and the reliability and safety of sucking tissue liquid and vitreous body are improved.

Optionally, as shown in fig. 3, the glass-cutting handle further includes a third sealing ring 720, a third receiving groove 208 is formed at the bottom of the sealing cavity 204, the first through hole 203 is communicated to the third receiving groove 208, the third sealing ring 720 is located in the third receiving groove 208, and the driving shaft 301 is sleeved with the third sealing ring 720. The air tightness in the sealing chamber 204 is further ensured by the provision of a third sealing ring 720.

Optionally, the vitrectomy handle further comprises a wire harness (not shown in the figure), the wire harness is annular, and one end of the casing 100 is sleeved with the wire harness, and is used for binding a pipeline connected with the first end 210.

Alternatively, referring to fig. 10, the outer probe 410 includes an end 411 and a probe body 412, and the end 411 is drilled and then welded to the probe body 412 to form the outer probe 410. The outer side wall of the end 411 is provided with a cutting suction port 413, and the inner probe 420 is matched with the cutting suction port 413 for cutting when moving.

It should be noted that the outer probe 410 is designed to have a front end sealed and a controllable thickness, and the sidewall of the front end of the outer probe 410 is provided with the cutting suction port 413, so that the vitreous body can enter into the inner probe 420 to be completely cut, and the manufacturing difficulty is concentrated on the front end sealed portion. Due to the clinical requirement for the safety of the retinal retraction, the cutting suction port 413 needs to be located closer to the front end, and the inner probe 420 is moved forward to ensure that the front end of the cutting suction port 413 can pass through, thereby achieving the cutting effect. This requires that the front end of the outer probe 410 be flat, thin and controllable.

Several existing plugging process modes of the outer probe 410 include front end filler plugging, front end hot shrinkage, front end sheet and tube welding and bar deep hole drilling. The front end filler is filled with a molten base material and then solidified, and the flowability of fluid is difficult to control, so that the uneven thickness of the filled part and the cracking of the filler part are easily caused. The front end hot shrinkage hole is formed by extruding the far end of the pipe towards the middle in a heated state, so that two sides of the pipe are lapped to realize plugging. The front end sheet and the pipe are welded to form a common foreign competitive product process, so that the inner far end plugging part is flat and uniform and controllable in thickness, the control of welding process parameters needs to be accurate, the plugging sheet material needs to guarantee certain thickness, the welding seam of the welding part of the sheet material and the pipe needs to guarantee uniform size and small welding seam quality, and otherwise, the forward movement of the inner probe 420 is influenced. The bar deep hole drill can also ensure that the inner far-end plugging part is flat and uniform, and the thickness is smaller and controllable. However, the difficulty is that the depth to diameter ratio of the bore hole, the outer probe 410 is 100: about 1. To increase the aspiration flow rate, the inner diameter of the tubing is often required to be larger, while the outer diameter is determined by the clinician's opening and can be considered as an unchangeable size, so the wall thickness of the outer probe 410 tubing is generally ultra-thin walled tubing. The ultra-thin wall pipe is often poor in rigidity and is very easy to deform and break in the machining process, so that the drilling process is extremely high in difficulty and rejection rate, and high cost is brought.

In the embodiment, the outer probe 410 is divided into a front section and a rear section, and then the front section and the rear section are butt welded together after the manufacturing is completed by combining the welding and drilling processes, so that the depth-diameter ratio is greatly reduced, the drilling difficulty is reduced, and the yield is improved. The front section is the end 411, and the rear section is the probe body 412. The front section part adopts a drilling process, and the drilling process can ensure that the plugging part in the end part 411 is flat and uniform, and the thickness is small and controllable. The rear section is an ultra-thin wall tube which is pulled out, and the manufacturing process is mature. The butt welded seam is located behind the cutting suction port 413 without hindering the meeting and continued forward movement of the inner probe 420 and the end 411, thereby reducing the effect of the seam on the cut portion.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered within the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. A glass cutting handle, comprising:

the air guide piece is provided with a first air guide channel, a second air guide channel, a first through hole and a sealing cavity, and the first air guide channel extends from the first end of the air guide piece to one side of the sealing cavity and is communicated with the sealing cavity; the second air guide channel is provided with a turning part, the turning part enables the second air guide channel to extend from the first end to the other side of the sealing cavity to be communicated with the sealing cavity, the turning part is positioned on the upper surface of the other side of the sealing cavity, and the first through hole is communicated with the sealing cavity from the second end of the air guide piece;

the driving piece is movably arranged in the sealing cavity;

the probe comprises an outer probe and an inner probe, the inner probe is slidably arranged in the outer probe, the outer probe is connected with the air guide piece, and the inner probe is connected with the driving piece through the first through hole;

when the first gas guide channel guides gas, the driving piece moves towards the second end direction to drive the inner probe to move forwards, and when the second gas guide channel guides gas, the driving piece moves towards the first end direction to drive the inner probe to move backwards.

2. The vitrectomy handle of claim 1, wherein the air guide further comprises a suction channel, the suction channel leads from the first end to the sealed cavity, and the suction channel is coaxially disposed with the first through hole;

a driving shaft is arranged on the side edge of the driving part, a second through hole is formed in the driving shaft along the axial direction of the driving shaft, the second through hole penetrates through the driving part, and the driving shaft penetrates through the suction channel;

the inner probe is provided with a discharge hole along the axial direction, and the discharge hole is communicated with the second through hole.

3. The vitrectomy handle of claim 2, further comprising a connector;

the connecting piece has first mounting hole and the second mounting hole of coaxial setting, just first mounting hole with the second mounting hole switches on, first mounting hole with interior probe connection, the second mounting hole with the drive shaft is connected.

4. The vitrectomy handle according to claim 3, further comprising a connecting rod, wherein the connecting rod is provided with a third through hole along an axial direction thereof, one end of the connecting rod is connected with the second end, and the third through hole is communicated with the first through hole;

the connecting piece is positioned in the third through hole and is used for connecting the inner probe and the driving shaft;

one end of the outer probe is connected with the other end of the connecting rod.

5. The glass-cutting handle according to claim 4, wherein the connecting rod is provided with a rod body and a fixing part, the third through hole is formed in the rod body, the fixing part is provided with a connecting hole, one end face of the fixing part is provided with a mounting groove, the connecting hole conducts the mounting groove, one end face of the rod body is provided with a convex part, the mounting groove is matched and connected with the convex part, and the convex part is provided with a transition hole which is conducted with the third through hole;

the outer probe is connected with the connecting hole, and the other end of the rod body is connected with the second end.

6. The skiving handle of claim 5, wherein the first seal;

the convex part is provided with a first accommodating groove, and the transition hole is arranged at the bottom of the first accommodating groove and communicated with the third through hole;

the first sealing element is located in the first accommodating groove, and the outer side wall of the inner probe is sleeved with the first sealing element.

7. The vitrectomy handle of claim 2 further comprising a seal assembly located within the aspiration channel, the seal assembly comprising a first seal ring, a second seal ring, and a gland;

a second accommodating groove is formed in the top of the sealing cavity, the second accommodating groove is communicated with the suction channel, and the sealing assembly is arranged in the second accommodating groove;

the driving shaft is located on two side edges of the driving piece, and the outer side wall of the driving shaft located in the second containing groove is sequentially sleeved with the first sealing ring, the sealing sleeve and the second sealing ring.

8. The skiving handle of claim 7, further comprising a third sealing ring;

a third accommodating groove is formed in the bottom of the sealing cavity, and the first channel is communicated with the third accommodating groove;

the third sealing ring is located in the third accommodating groove and sleeved on the driving shaft.

9. The vitrectomy handle of claim 1, wherein the drive member has a first resilient portion, a second resilient portion, and a movable portion;

the first elastic part is annularly arranged on the outer side of the movable part;

the second elastic part is annularly arranged on the outer side of the first elastic part, is connected with the inner side wall of the sealed cavity and divides the sealed cavity into a first cavity and a second cavity;

wherein the first chamber is in communication with the first gas channel and the second chamber is in communication with the second gas channel.

10. The vitrectomy handle of claim 1, wherein the air guide comprises a first cover and a second cover, the first cover and the second cover being removably connected;

the first end is located the first lid, the second end with the first through-hole is located the second lid, the first lid with the second lid closes and forms sealed chamber.

11. The vitrectomy handle of claim 1, further comprising a housing;

the shell is provided with accommodating cavities for communicating two ends of the shell;

the air guide piece is arranged in the accommodating cavity and is positioned at one end of the shell, and the part of the probe is positioned in the accommodating cavity.

12. The vitrectomy handle of claim 1, wherein the outer probe comprises an end portion and a probe body, the end portion is drilled and then welded with the probe body to form the outer probe;

and a cutting and suction port is formed in the outer side wall of the end part, and the inner probe is matched with the cutting and suction port for cutting when moving.