WO2025002149A1 - Implantation device, implantation system, and method of using implantation system - Google Patents

Abstract

The present application relates to the technical field of medical treatment, and in particular, to an implantation device, an implantation system, and a method of using the implantation system. The implantation device disclosed in the present application is used for implanting an implant. The implantation device comprises a shell and an observation tube; the observation tube is fixedly connected to the shell; the observation tube extends in a first direction; the observation tube comprises a tube body and elastic clamping pieces which are connected to each other; the tube body defines a cavity; the cavity is used for containing the implant; at least parts of the elastic clamping pieces are located in the cavity; at least two elastic clamping pieces define a first opening; the diameter of the first opening is smaller than the diameter of the implant when no external force is applied; the elastic clamping pieces are configured to increase the diameter of the first opening when pressed by an external force.

Description

Implant device, implant system, and method of using the implant system

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application 202310760409.2, filed on June 26, 2023, entitled “Implant device, implant system, and method for using an implant system,” and the entire contents of that application are incorporated herein by reference.

Technical Field

The present application belongs to the field of medical technology, and in particular relates to an implant device, an implant system, and a method for using the implant system.

Background Art

Glaucoma is one of the three major blinding eye diseases that cause blindness in humans, with an incidence rate of 1% in the general population and 2% after the age of 45. Glaucoma is a group of diseases characterized by optic disc atrophy and depression, visual field defects and decreased vision. Pathological increase in intraocular pressure and insufficient blood supply to the optic nerve are the primary risk factors for its onset. The tolerance of the optic nerve to pressure damage is also related to the occurrence and development of glaucoma. Any obstruction in the aqueous humor circulation pathway can lead to pathological changes caused by increased intraocular pressure, but some patients also present with normal intraocular pressure glaucoma.

Currently, the commonly used treatments for glaucoma include: drug therapy, laser trabeculoplasty, trabeculectomy, etc. When other treatments are ineffective, the intraocular drainage implant method is the most commonly used method. This method inserts an implant stent into the eye so that the aqueous humor can be discharged through the drainage path on the implant stent and leave the anterior chamber. This method is usually performed by the doctor manually implanting the implant stent into the Schlemm's canal. This implantation method has the problems of inaccurate positioning and poor implantation effect.

Summary of the invention

The embodiments of the present application provide an implantation device that can achieve precise pushing of an implant.

The embodiment of the first aspect of the present application provides an implantation device for implanting an implant, the implantation device includes a shell and an observation tube, the observation tube is fixedly connected to the shell, the observation tube is extended along a first direction, the observation tube includes a tube body and an elastic retaining member connected to each other, the tube body encloses a cavity, the cavity is used to accommodate the implant, at least part of the elastic retaining member is The retaining piece is located in the cavity, and at least two elastic retaining pieces enclose a first opening. The diameter of the first opening is smaller than the diameter of the implant when no external force is applied. The elastic retaining piece is configured to increase the diameter of the first opening when squeezed by external force.

According to any one of the aforementioned implementations of the first aspect of the present application, the elastic retaining member includes a first connecting portion and a protruding portion, the first connecting portion is connected to the tube body, and the protruding portion is arranged to gradually protrude toward the cavity along the first direction.

According to any one of the aforementioned implementations of the first aspect of the present application, the elastic retaining member further includes a second connecting portion, the protruding portion is located between the first connecting portion and the second connecting portion, and the second connecting portion is connected to the tube body.

According to any one of the aforementioned first aspects of the present application, the embodiment further includes: a pushing mechanism, which is movably arranged with the shell in the first direction, and a limiting cavity is formed between the pushing mechanism and the elastic locking member, and the limiting cavity can accommodate at least one implant.

According to any one of the aforementioned embodiments of the first aspect of the present application, the number of implants is two, one of which is located in the limiting cavity, and the other is located inside the pushing mechanism.

According to any one of the aforementioned embodiments of the first aspect of the present application, the number of implants is three, the first implant is located in the limiting cavity, and the second implant and the third implant are located inside the pushing mechanism.

According to the implementation scheme of any of the first aspects mentioned above in the present application, it also includes: an inner needle, connected to the shell, at least one implant is sleeved on the inner needle, and at least part of the inner needle is located in the cavity; a driving mechanism, movably arranged with the shell and connected to the pushing mechanism; the pushing mechanism includes: a push pin, sleeved on the inner needle, the push pin and the inner needle are movably arranged in a first direction, and a second opening is provided on one end of the push pin in the first direction.

According to any one of the aforementioned first aspects of the present application, two implants are sequentially sleeved on the inner needle along the first direction, one of which is accommodated in the limiting cavity, and the other is located on the side of the second opening away from the first opening; or, at least three implants are sequentially sleeved on the inner needle along the first direction, one of which is accommodated in the limiting cavity, and the remaining implants are all located on the side of the second opening away from the first opening.

According to any one of the aforementioned embodiments of the first aspect of the present application, an elastic claw is provided at one end of the push pin facing away from the push pin seat, and a second opening is formed between the plurality of elastic claws.

According to any one of the first aspects of the present application, the implant device includes a trigger state and a non-trigger state, the trigger state includes a first stage and a second stage; the drive mechanism includes a cam, the cam is provided with a first drive surface and a second drive surface connected to each other, the cam is configured to rotate along a third direction in the trigger state, in the first stage, the first drive surface drives the push mechanism and the implant to move along the first direction, and in the second stage, the second drive surface drives the push mechanism to move along the second direction; the first drive surface is gradually extended in the direction away from the rotating shaft of the cam along the third direction, The second driving surface is extended along the third direction gradually toward the direction of the rotating shaft of the cam.

According to any implementation scheme of the first aspect described above in the present application, a first step surface and a second step surface are also provided on the cam, the first step surface is connected to the first driving surface, and the second step surface is connected to the second driving surface, the first step surface is located on the side of the first driving surface away from the second driving surface, and the second step surface is located on the side of the second driving surface away from the first driving surface, and the distance from the first step surface to the rotating axis of the cam is greater than the distance from the second step surface to the rotating axis of the cam.

According to an implementation scheme of any of the aforementioned first aspects of the present application, the cam is also provided with a third driving surface, a fourth driving surface and a third step surface which are connected in sequence, the third driving surface is connected to the second step surface, the third driving surface is located on the side of the second step surface away from the second driving surface, the distance from the second step surface to the rotation axis of the cam is greater than the distance from the third step surface to the rotation axis of the cam; the third driving surface is extended along the third direction gradually away from the rotation axis of the cam, and the fourth driving surface is extended along the third direction gradually close to the rotation axis of the cam.

According to the implementation scheme of any of the first aspects mentioned above in the present application, it also includes: a trigger button, the trigger button includes a key and a connecting rod, the key and the shell are movably arranged, the connecting rod connects the key and the cam, and the connecting rod is configured to limit each other with the cam in a non-trigger state, thereby limiting the cam from rotating along a third direction; in the trigger state, the key drives the connecting rod to move along a fourth direction and releases the cam.

According to an implementation scheme of any of the aforementioned first aspects of the present application, a limit block is provided on the cam, and a limit portion is provided on the connecting rod, and the limit portion is configured to abut against the limit block in a non-triggered state, thereby limiting the cam from rotating along a third direction; in a triggered state, the connecting rod moves along a fourth direction, the limit portion releases the limit block, and the cam rotates along the third direction.

According to any one of the aforementioned implementations of the first aspect of the present application, a plurality of limit blocks are arranged at intervals around the rotating shaft of the cam.

According to any one of the aforementioned embodiments of the first aspect of the present application, an observation window is provided on a side of the observation tube facing away from the shell.

On the other hand, the second embodiment of the present application also provides an implant system, including the implant device and implant as described above.

On the other hand, the third aspect embodiment of the present application also provides a method for using an implant system, the implant device includes an observation tube, a driving mechanism, a pushing mechanism and a trigger button, the observation tube is extended along a first direction, the observation tube includes a tube body and an elastic retaining member connected to each other, the tube body is enclosed to form a cavity, at least two elastic retaining members are enclosed to form a first opening, and a limiting cavity is formed between the pushing mechanism and the elastic retaining member; the method of use includes: inserting the implant system into the patient's eye; pressing the trigger button, the trigger button drives the pushing mechanism and the implant in the limiting cavity to move along the first direction through the driving mechanism until the implant extends out of the cavity from the first opening; the driving mechanism drives the pushing mechanism to move along the second direction.

The implantation device of the embodiment of the present application is used for implanting an implant, and the implantation device comprises a housing and an observation tube. The tube is fixedly connected to the shell, and the observation tube is extended along a first direction. The observation tube includes a tube body and an elastic retaining piece that are connected to each other. The tube body is enclosed to form a cavity, and the cavity is used to accommodate the implant. At least part of the elastic retaining piece is located in the cavity. At least two elastic retaining pieces are enclosed to form a first opening. By making the diameter of the first opening smaller than the diameter of the implant when not subjected to external force, the elastic retaining piece is configured to increase the diameter of the first opening when subjected to external force. The first opening does not affect the implantation of the implant. When the implant device is moved or inverted, the first opening can reduce the probability of the implant falling out of the cavity, thereby improving the reliability of the implant device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the three-dimensional structure of an implant device according to some embodiments of the present application;

FIG. 2 is a schematic diagram showing an exploded structure of an exemplary implant device in FIG. 1 ;

FIG3 shows an exemplary partial enlarged cross-sectional view of the implant device and the implant in FIG1 at position A;

FIG4 shows an example of an enlarged partial cross-sectional view of the implant device and implant in FIG3 after the puncture needle mechanism is hidden;

FIG5 is a schematic diagram showing a three-dimensional structure of an exemplary implant device and an implant in FIG4 ;

FIG6 shows another example of an enlarged partial cross-sectional view of the implant device and the implant in FIG1 at position A;

FIG7 shows an example of an enlarged partial cross-sectional view of the implant device and implant in FIG6 after the puncture needle mechanism is hidden;

FIG8 is a schematic diagram showing a three-dimensional structure of an exemplary implant device and an implant in FIG7 ;

FIG9 is a front view schematic diagram showing an exemplary trigger button, a pushing mechanism and a cam in an untriggered state;

FIG10 is a schematic diagram showing a partial enlarged structure of the trigger button, the pushing mechanism and the cam in FIG9 as an example;

FIG11 is a schematic diagram showing a partial enlarged structure of an example of the trigger button, the pushing mechanism and the cam in FIG10 at the end of the first stage;

FIG12 is a schematic diagram showing a partial enlarged structure of an example of the trigger button, the pushing mechanism and the cam in FIG10 at the end of the second stage;

FIG13 is a schematic front view of a cam structure of an example;

FIG14 is a schematic diagram showing a three-dimensional structure of an example cam;

FIG15 is a schematic cross-sectional view of an example of the inner needle, the push needle and the implant in FIG6 ;

FIG16 is a schematic cross-sectional view of an example of the push pin in FIG15 ;

FIG17 is a schematic diagram showing a three-dimensional structure of an exemplary push pin;

FIG. 18 shows another example of an enlarged partial cross-sectional view of the implant device and implant in FIG. 3 after the puncture needle mechanism is hidden.

Reference numerals:
100. implant device; 200. implant;
10. Shell;
20. trigger button; 21. button; 22. connecting rod; 221. limiting part; 23. second elastic member;
30. Observation tube; 31. First opening; 32. Cavity; 33. Tube body; 34. Observation window; 35. Elastic stopper; 351. First connection part; 352. Protrusion; 353. Second connection part; 36. Limiting cavity;
40. Push mechanism; 41. Push pin; 411. Second opening; 412. Elastic claw; 42. Push pin seat; 43. First elastic member;
50, cam; 501, rotating shaft; 502, torsion spring; 51, first driving surface; 52, second driving surface; 53, first step surface; 54, second step surface; 55, third driving surface; 56, fourth driving surface; 57, third step surface; 58, stop block;
60. Internal needle;
70. puncture needle mechanism; 71. puncture needle; 711. third opening; 72. puncture needle seat;
80. Protection mechanism; 81. Protection slide button; 82. Protection connecting rod;
x, first direction; y, second direction; z, third direction; a, fourth direction; c, fifth direction.

DETAILED DESCRIPTION

The features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, many specific details are presented in order to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below can be combined in any suitable manner in one or more embodiments.

In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

The applicant found that in the related art, the intraocular drainage implant method is usually to implant the implant stent into the Schlemm's canal by the doctor's bare hands. This implantation method has the problems of inaccurate positioning and poor implantation effect.

In view of the above problems, the applicant proposes an implant device for implanting an implant, the implant device comprising a shell and an observation tube, the observation tube being fixedly connected to the shell, the observation tube extending along a first direction, the observation tube comprising a tube body and an elastic retaining member connected to each other, the tube body encloses a cavity to accommodate the implant, at least part of the elastic retaining member is located in the cavity, at least two elastic retaining members enclose a first opening, the diameter of the first opening when not subjected to external force is smaller than the diameter of the implant, and the elastic retaining member is configured so that the diameter of the first opening becomes larger when squeezed by external force.

The implant device provided in the present application makes the diameter of the first opening smaller than the diameter of the implant when not subjected to external force, and the elastic retaining member is configured so that the diameter of the first opening becomes larger when subjected to external force. The first opening does not affect the implantation of the implant. When the implant device is moved or inverted, the first opening can reduce the probability of the implant falling out of the cavity, thereby improving the reliability of the implant device.

The display module provided by the embodiment of the present application is introduced below with reference to the accompanying drawings. It is noted that the x direction in the accompanying drawings is the first direction, the y direction in the accompanying drawings is the second direction, the z direction in the accompanying drawings is the third direction, the a direction in the accompanying drawings is the fourth direction, and the c direction in the accompanying drawings is the fifth direction. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions. For the sake of clarity, some contour lines may be hidden in the accompanying drawings. And make differentiated treatment on line width.

Please refer to Figures 1 to 5, Figure 1 is a schematic diagram of the three-dimensional structure of the implant device of some embodiments of the present application; Figure 2 is a schematic diagram of the decomposed structure of an example implant device in Figure 1; Figure 3 is an example of an implant device and an implant in Figure 1 at position A, a local enlarged sectional view; Figure 4 is an example of an implant device and an implant in Figure 3 after hiding the puncture needle mechanism; Figure 5 is a schematic diagram of the three-dimensional structure of the implant device and the implant in Figure 4.

As shown in Figures 1 to 5, the present application provides an implant device 100 for implanting an implant 200. The implant device 100 includes a shell 10 and an observation tube 30. The observation tube 30 is fixedly connected to the shell 10. The observation tube 30 is extended along a first direction (the x direction in the figure). The observation tube 30 includes a tube body 33 and an elastic retaining member 35 that are connected to each other. The tube body 33 encloses a cavity 32. The cavity 32 is used to accommodate the implant 200. At least part of the elastic retaining member 35 is located in the cavity 32. At least two elastic retaining members enclose a first opening 31. The diameter of the first opening 31 when not subjected to external force is smaller than the diameter of the implant 200. The elastic retaining member 35 is configured so that the diameter of the first opening 31 becomes larger when squeezed by an external force.

Optionally, the implant 200 can be a conventional implant or an expansion stent, and the expansion stent is made of shape memory material, and the shape memory material includes nickel-titanium alloy, indium-thallium alloy, etc. Among them, the implant 200 is an axisymmetric figure, and the diameter of the implant 200 refers to its radial dimension. Similarly, the diameters of the axisymmetric parts involved in the subsequent description all refer to their radial dimensions. When the implant 200 is located in the implant device 100, the symmetry axis of the implant 200 is colinear with the symmetry axis of the observation tube 30, and the diameter of the first opening 31 when not subjected to external force is smaller than the maximum diameter of the implant 200.

Optionally, during surgery, the implant 200 is implanted into the trabecular meshwork of the patient through the implant device 100. After being implanted into the trabecular meshwork of the patient, the implant 200 becomes a passage connecting the patient's anterior chamber to the Schlemm's canal, and the aqueous humor flows out of the anterior chamber through the implant 200, thereby reducing the patient's intraocular pressure and delaying the course of glaucoma.

Alternatively, in various embodiments, implant 200 may be used to transfer aqueous humor to different parts of the eye, such as the space between the conjunctiva and the sclera, the suprachoroidal space, Schlemm's canal, or a fluid reservoir formed on the posterior surface of the eye.

The implant device 100 provided in this embodiment is used to implant an implant 200. The implant device 100 includes a shell 10 and an observation tube 30. The observation tube 30 is fixedly connected to the shell 10 and extends along a first direction x. The observation tube 30 includes a tube body 33 and an elastic retaining member 35 that are connected to each other. The tube body 33 encloses a cavity 32. The cavity 32 is used to accommodate the implant 200. At least part of the elastic retaining member 35 is located in the cavity 32. At least two elastic retaining members enclose a cavity 32. The first opening 31, by making the diameter of the first opening 31 smaller than the maximum diameter of the implant 200 when not subjected to external force, the elastic retaining member 35 is configured to increase the diameter of the first opening 31 when subjected to external force. When subjected to external force, the diameter of the first opening 31 increases until it is larger than the maximum diameter of the implant 200, thereby not affecting the implantation of the implant 200. When the implant device 100 is moved or inverted, since the diameter of the first opening 31 when not subjected to external force is smaller than the maximum diameter of the implant 200, the first opening 31 can reduce the probability of the implant 200 falling out of the cavity 32, thereby improving the reliability of the implant device 100.

In some optional embodiments, the elastic retaining member 35 includes a first connecting portion 351 and a protruding portion 352 , the first connecting portion 351 is connected to the tube body 33 , and the protruding portion 352 is gradually protruded toward the cavity 32 along the first direction x.

Optionally, the elastic retaining member 35 is a cantilever beam-like structure, and the change in the diameter of the first opening 31 is achieved through the resilience of the material itself.

Please refer to Figures 6 to 8, Figure 6 shows a partial enlarged cross-sectional view of the implant device and implant in Figure 1 at position A of another example; Figure 7 shows a partial enlarged cross-sectional view of the implant device and implant in Figure 6 of an example after hiding the puncture needle mechanism; Figure 8 shows a schematic diagram of the three-dimensional structure of the implant device and implant in Figure 7 of an example.

As shown in Figures 6 to 8, in some optional embodiments, the elastic locking member 35 includes a first connecting portion 351, a protruding portion 352 and a second connecting portion 353, the first connecting portion 351 and the second connecting portion 353 are both connected to the tube body 33, and the protruding portion 352 is located between the first connecting portion 351 and the second connecting portion 353.

Optionally, the protrusion 352 first protrudes toward the cavity 32 along the first direction x and then extends toward the tube body 33 until it is connected to the second connecting portion 353. The protrusion 352 realizes the change of the diameter of the first opening 31 through the resilience of the material itself.

Please refer to FIG. 1 to FIG. 9 , FIG. 9 shows a front view structural diagram of an example trigger button, a pushing mechanism and a cam in an untriggered state.

As shown in FIGS. 1 to 9 , in some optional embodiments, an observation window 34 is provided on a side of the observation tube 30 facing away from the housing 10 .

Optionally, the observation window 34 is disposed on the elastic locking member 35 .

Optionally, the tube body 33 extends along the first direction x and forms an observation window on a side of the elastic retaining member 35 facing away from the housing 10 .

The implantation device 100 provided in this embodiment has an observation window 34 disposed on the tube body 33 , so that medical personnel can observe the implantation status of the implant 200 through the observation window 34 .

In some optional embodiments, the implant device 100 further includes a pushing mechanism 40, a driving mechanism and an inner needle 60. The pushing mechanism 40 and the housing 10 are movably arranged in the first direction x. A limiting cavity 36 is formed between the pushing mechanism 40 and the elastic retaining member 35. The limiting cavity 36 can accommodate at least one implant 200. The inner needle 60 is connected to the housing 10. At least one implant 200 is sleeved on the inner needle 60. At least part of the inner needle 60 is located in the cavity 32. The driving mechanism is movably arranged with the housing 10 and connected to the pushing mechanism 40. The pushing mechanism 40 includes a pushing pin 41, a pushing pin seat 42 and a first elastic member 43. The pushing pin 41 is sleeved on the inner needle 60. The pushing pin 41 and the inner needle 60 are movably arranged in the first direction x. The push pin 41 is provided with a second opening 411 at one end in the first direction x. The push pin seat 42 is connected to one end of the push pin 41 away from the second opening 411, and the first elastic member 43 connects the push pin seat 42 and the shell 10. The first elastic member 43 is used to drive the push pin seat 42 and the push pin 41 to move along the second direction (the y direction in the figure) until the push pin seat 42 is connected to the cam 50. The second direction y is opposite to the first direction x.

Optionally, the first elastic member 43 may be a spring.

Optionally, the driving mechanism may be a motor, a cylinder or other components.

As shown in FIG. 4 , in some optional embodiments, three implants 200 are sequentially sleeved on the inner needle 60 along the first direction x, the first implant 200 is located in the limiting cavity 36 , and the second and third implants 200 are both located inside the pushing mechanism 40 , that is, between the pushing needle 41 and the inner needle 60 .

As shown in FIG. 18 , in some other optional embodiments, two implants 200 are sequentially sleeved on the inner needle 60 along the first direction x, wherein one implant 200 is accommodated in the limiting cavity 36 , and the other implant 200 is located inside the pushing mechanism 40 .

Please refer to Figures 9 to 14. Figure 10 shows a schematic diagram of a partial enlarged structure of the trigger button, push mechanism and cam in Figure 9 of an example; Figure 11 shows a schematic diagram of a partial enlarged structure of the trigger button, push mechanism and cam in Figure 10 of an example at the end of the first stage; Figure 12 shows a schematic diagram of a partial enlarged structure of the trigger button, push mechanism and cam in Figure 10 of an example at the end of the second stage; Figure 13 shows a schematic diagram of the front view of the cam of an example; Figure 14 shows a schematic diagram of the three-dimensional structure of the cam of an example. In order to make the lines clear, the outlines of some of the blocked parts in the drawings are also drawn with solid lines.

As shown in FIGS. 9 to 14 , in some optional embodiments, the implant device 100 includes a trigger state and a non-trigger state, and the trigger state includes a first stage and a second stage. The drive mechanism includes a cam 50, and the cam 50 is provided with a first drive surface 51 and a second drive surface 52 that are interconnected. The cam 50 is configured to rotate along a third direction (z direction in the figure) in the trigger state. In the first stage, the first drive surface 51 drives the push mechanism 40 and the implant 200 to move along the first direction x. In the second stage, the second drive surface 52 drives the push mechanism to move along the second direction y. The first drive The surface 51 is gradually extended in a direction away from the rotating shaft 501 of the cam 50 along the third direction z, and the second driving surface 52 is gradually extended in a direction close to the rotating shaft 501 of the cam 50 along the third direction z.

Optionally, the cam 50 is connected to the housing 10 via a rotating shaft 501 and a torsion spring 502 , and the torsion spring 502 is used to drive the cam 50 to rotate around the rotating shaft 501 along a third direction z.

Optionally, the first driving surface 51 and the second driving surface 52 together form a conical protrusion on the cam 50 .

In some optional embodiments, the cam 50 is further provided with a first step surface 53 and a second step surface 54, the first step surface 53 is connected to the first driving surface 51, and the second step surface 54 is connected to the second driving surface 52. The first step surface 53 is located on the side of the first driving surface 51 away from the second driving surface 52, and the second step surface 54 is located on the side of the second driving surface 52 away from the first driving surface 51. The distance from the first step surface 53 to the rotating shaft 501 of the cam 50 is greater than the distance from the second step surface 54 to the rotating shaft 501 of the cam 50.

Optionally, when the implant device 100 is in a non-triggered state, one end of the pushing mechanism 40 that is away from the implant 200 is connected to the first step surface 53. In the first stage, one end of the pushing mechanism 40 that is away from the implant 200 is connected to the first driving surface 51, and the first driving surface 51 drives the pushing mechanism 40 and the implant 200 to move along the first direction x, and the implant 200 squeezes the elastic retaining member 35 to increase the diameter of the first opening 31, until the diameter of the first opening 31 is equal to the maximum diameter of the implant 200, and the implant 200 extends out of the limiting cavity 36 from the first opening 31. In the second stage, one end of the pushing mechanism 40 that is away from the implant 200 is connected to the second driving surface 52, and the second driving surface 52 drives the pushing mechanism 40 to move along the second direction y. Since the distance from the first step surface 53 to the rotating shaft 501 of the cam 50 is greater than the distance from the second step surface 54 to the rotating shaft 501 of the cam 50, at the end of the second stage, the reset position of the pushing mechanism 40 is closer to the side of the shell 10 than the initial position, so that the second implant 200 enters the limiting cavity 36 to facilitate the second implantation of the implant device 100.

In some optional embodiments, the cam 50 is further provided with a third driving surface 55, a fourth driving surface 56 and a third step surface 57 connected in sequence, the third driving surface 55 is connected to the second step surface 54, and the third driving surface 55 is located on the side of the second step surface 54 away from the second driving surface 52. The distance from the second step surface 54 to the rotating shaft 501 of the cam 50 is greater than the distance from the third step surface 57 to the rotating shaft 501 of the cam 50. The third driving surface 55 is gradually extended in the direction away from the rotating shaft 501 of the cam 50 along the third direction z, and the fourth driving surface 56 is gradually extended in the direction close to the rotating shaft 501 of the cam 50 along the third direction z.

Optionally, the third driving surface 55 and the fourth driving surface 56 together form a conical protrusion on the cam 50. The first driving surface 51, the second driving surface 52, the third driving surface 55, the fourth driving surface 56, the first step surface 53, the second step surface 54 and the third step surface 57 are all located on the rim of the cam 50. The pushing mechanism 40 is away from the implant 200. The end is always connected to the rim of the cam 50. In the implant device 100 provided in this embodiment, the two conical protrusions are connected by only one step surface, and the outer arc of the step surface becomes longer. The setting of the step surface enables the cam 50 to control the pushing mechanism 40 more accurately during the rotation process, so that the pushing mechanism 40 drives the implant into the eye with higher accuracy.

Optionally, after the implant device 100 completes an implantation, the end of the push mechanism 40 that is away from the implant 200 is connected to the second step surface 54, and then the user continues to make the implant device 100 enter the second trigger state. In the first stage, the end of the push mechanism 40 that is away from the implant 200 is connected to the third drive surface 55, and the third drive surface 55 drives the push mechanism 40 and the implant 200 to move along the first direction x. In the second stage, the end of the push mechanism 40 that is away from the implant 200 is connected to the fourth drive surface 56, and the fourth drive surface 56 drives the push mechanism 40 to move along the second direction y. Since the distance from the second step surface 54 to the rotating shaft 501 of the cam 50 is greater than the distance from the third step surface 57 to the rotating shaft 501 of the cam 50, at the end of the second stage, the reset position of the push mechanism 40 is closer to one side of the housing 10 than the initial position, so that the third implant 200 enters the limiting cavity 36, so as to facilitate the third implantation of the implant device 100.

In this embodiment, three implants 200 are provided in the implant device 100 for illustration. Of course, when the implant device 100 supports more implants, more driving surfaces and step surfaces may be provided on the cam 50 .

The implant device 100 provided in this embodiment has an implant 200 pre-placed in the limiting cavity 36. In the triggered state, the push pin 41 first moves along the first direction x and implants the implant 200, and then moves along the second direction y and allows the next implant 200 to enter the limiting cavity 36, so that the second implant is also implanted first and then loaded. Compared with the solution of first retracting and loading the implant 200 and then advancing and implanting the implant 200, this solution avoids the influence of the jitter caused by the backward loading on the implantation, thereby improving the implantation accuracy of the implant device 100. Secondly, the first implant 200 does not need to be loaded by the rotation of the cam 50, avoiding the situation where the cam 50 is not loaded in place due to insufficient rotation angle, thereby improving the implantation reliability of the implant device 100.

In other embodiments, if only one implant is implanted, the implant can directly push the pin 41 along the first direction x and implant the implant 200 in the trigger state, and the push pin 41 does not need to be set to move along the second direction y, which reduces the requirements for the function and complexity of the structure and improves the accuracy of implantation. In this embodiment, the cam 50 can be provided with only the first step surface 53 and the first drive surface 51, without other step surfaces and drive surfaces, so that the push pin 41 will only move once along the first direction x and complete one implantation.

In other embodiments, if only two implants are implanted, the first implant can directly push the needle 41 along the first direction x and implant the implant 200 in the trigger state, and then push the needle 41 along the second direction y until it is located at the tail of the second implant. At this time, the distance that the push needle retreats can be greater than the length of the implant, that is, the distance retreated is The distance does not need to be set strictly according to the length of the implant, and can be greater than the length. In this case, the precision requirement for retreat is reduced, thereby reducing the complexity requirement for the structure, and improving the precision of implantation. In this embodiment, the cam 50 can only be provided with the first step surface 53, the first drive surface 51, the second drive surface 52, the second step surface 54, the third drive surface 55, the fourth drive surface 56 and the third step surface 57, without other step surfaces and drive surfaces, so that the push pin 41 can only move forward and backward twice, and complete two implantations.

Please refer to Figures 15 to 17, Figure 15 shows a schematic diagram of the cross-sectional structure of the inner needle, push needle and implant in Figure 6 of an example; Figure 16 shows a schematic diagram of the cross-sectional structure of the push needle in Figure 15 of an example; Figure 17 shows a schematic diagram of the three-dimensional structure of the push needle of an example.

As shown in Figures 15 to 17, in some optional embodiments, an elastic claw 412 is provided at one end of the push pin 41 away from the push pin seat 42, and a second opening 411 is formed between multiple elastic claws 412. The inner diameter of the opening of the elastic claw 412 gradually increases along the direction close to the push pin seat 42 in the second direction y.

Optionally, the front end of the implant 200 in the first direction x is an inclined surface, and the rear end is a plane perpendicular to the first direction x. The diameter of the second opening 411 is smaller than the maximum diameter of the implant 200, and the elastic claw 412 enables the push pin 41 to push the implant 200 located in the limiting cavity 36 to move along the first direction x when it moves along the first direction x. When the push pin 41 moves along the second direction y, the inclined surface of the next implant 200 squeezes the elastic claw 412, so that the diameter of the second opening 411 becomes larger, until the diameter of the second opening 411 is equal to the maximum diameter of the implant 200, and the next implant 200 enters the limiting cavity 36, so as to facilitate the next implantation of the implant device 100.

Optionally, in the first stage, the push needle seat 42 is connected to the first driving surface 51, and the first driving surface 51 drives the push needle seat 42 to overcome the elastic force of the first elastic member 43, thereby causing the push needle seat 42, the push needle 41, and the implant 200 located in the limiting cavity 36 to move along the first direction x. In the second stage, the push needle seat 42 is connected to the second driving surface 52, and the elastic force of the first elastic member 43 and the second driving surface 52 drive the push needle seat 42 and the push needle 41 to move along the second direction y until the next implant 200 on the inner needle 60 enters the limiting cavity 36.

In some optional embodiments, the implant device 100 further includes a trigger button 20, which includes a button 21 and a connecting rod 22, and the button 21 is movably arranged with the housing 10. The connecting rod 22 connects the button 21 and the cam 50, and the connecting rod 22 is configured to limit each other with the cam 50 in a non-trigger state, thereby limiting the cam 50 from rotating along the third direction z. In the trigger state, the button 21 drives the connecting rod 22 to move along the fourth direction (direction a in the figure) and releases the cam 50.

Optionally, when the user presses the trigger button 20, the implant device 100 enters a trigger state.

Optionally, the trigger button 20 may further include a second elastic member 23, the second elastic member 23 connecting the button 21 and the housing 10, and the second elastic member 23 is used to make the trigger button 20 move along a fifth direction (the c direction in the figure) when no external force is applied. The second elastic member 23 may be a torsion spring, the fifth direction c is opposite to the fourth direction a, and the fourth direction a is perpendicular to the first direction x.

In some optional embodiments, the cam 50 is further provided with a limit block 58, and the connecting rod 22 is provided with a limit portion 221, which is configured to abut against the limit block 58 in a non-triggered state, thereby limiting the cam 50 from rotating along the third direction z. In the triggered state, the connecting rod 22 moves along the fourth direction a, and the limit portion 221 releases the limit block 58, thereby the cam 50 rotates along the third direction z.

In some optional embodiments, a plurality of limit blocks 58 are arranged at intervals around the rotating shaft 501 of the cam 50 .

Optionally, the limit blocks 58 are all located on the connecting surface between the wheel rim and the rotating shaft 501 .

Optionally, when the user presses the button 21, the button 21 and the connecting rod 22 overcome the elastic force of the second elastic member 23 and move along the fourth direction a until the limit portion 221 does not interfere with the limit block 58, thereby releasing the cam 50. The cam 50 rotates along the third direction z, causing the implant device 100 to enter a triggered state. After that, the user releases the button 21, and the button 21 and the connecting rod 22 move and reset along the fifth direction c under the elastic force of the second elastic member 23. After the cam 50 has gone through a first stage and a second stage, it rotates a certain angle until the limit portion 221 interferes with the next limit block 58, and the cam 50 stops rotating and is in a non-triggered state, and the implant device 100 completes an implant. When the user presses the button 21 again, the implant device 100 enters the next triggered state.

In some optional embodiments, the implant device 100 may further include a puncture needle mechanism 70 , which is movably disposed with the housing 10 in the first direction x, and the puncture needle mechanism 70 is sleeved on the observation tube 30 .

Please continue to refer to Figures 1 to 3. In some optional embodiments, the puncture needle mechanism 70 includes a puncture needle 71 and a puncture needle seat 72. The puncture needle 71 is sleeved on the observation tube 30. The puncture needle 71 is provided with a third opening 711 in the first direction x. The puncture needle seat 72 is connected to an end of the puncture needle 71 away from the third opening 711, and the puncture needle seat 72 and the housing are movably arranged in the first direction x.

Please continue to refer to Figures 1 to 2. In some optional embodiments, the implant device 100 may also include a protection mechanism 80, which is movably arranged with the shell 10 in the first direction x. The protection mechanism 80 includes a protection slide button 81 and a protection connecting rod 82 that are connected to each other, and the protection connecting rod 82 is connected to the puncture needle seat 72.

Optionally, in the untriggered state, the observation tube 30 is contained in the puncture needle 71. During implantation, the end of the puncture needle 71 away from the puncture needle seat 72 is inserted into the trabecular meshwork in the patient's eyeball and the Schlemm's canal inside the trabecular meshwork. The user pushes the protective sliding button 81 along the second direction y, thereby driving the puncture needle seat 72 and the puncture needle 71 to move along the second direction y until the observation tube 30 extends out of the puncture needle 71 from the third opening 711. Then the user presses the button 21 to start implantation. After the implantation is completed, the user pushes the protective sliding button 81 along the first direction x, thereby driving the puncture needle seat 72 and the puncture needle 71 along the second direction y. The first direction x is moved until the observation tube 30 is accommodated in the puncture needle 71 .

The embodiment of the second aspect of the present application also provides an implant system, including the implant device 100 and the implant 200 of any of the first aspect embodiments described above. Since the implant system provided by the embodiment of the second aspect of the present application includes the implant device 100 of any of the first aspect embodiments described above, the implant system provided by the embodiment of the second aspect of the present application has the beneficial effects of the implant device 100 of any of the first aspect embodiments described above, which will not be repeated here.

The third aspect of the present application also provides a method for using an implant system, which is applied to the implant system of any of the above embodiments. The method includes:

Step S01, inserting the implant system into the patient's eye.

Step S02, pressing the trigger button 20, the trigger button 20 drives the pushing mechanism 40 and the implant 200 in the limiting cavity 36 to move along the first direction x through the driving mechanism until the implant 200 extends out of the cavity 32 from the first opening 31;

Step S03 : the driving mechanism drives the pushing mechanism 40 to move along the second direction y until the next implant 200 enters the limiting cavity 36 .

Optionally, the driving mechanism includes a cam 50 .

Optionally, step S02 corresponds to the first stage. Specifically, the user presses the button 21 and then releases it. The button 21 drives the connecting rod 22 to move along the fourth direction a. The limiting portion 221 releases the limiting block 58, and then the cam 50 rotates along the third direction z. Afterwards, the first driving surface 51 drives the pushing mechanism 40 and the implant 200 in the limiting cavity 36 to move along the first direction x. The implant 200 squeezes the elastic locking member 35 to increase the diameter of the first opening 31 until the diameter of the first opening 31 is equal to the maximum diameter of the implant 200. The implant 200 extends out of the limiting cavity 36 from the first opening 31 and is implanted in the patient's affected area. Step S03 corresponds to the second stage. Specifically, the cam 50 continues to rotate along the third direction z, the second driving surface 52 drives the pushing mechanism to move along the second direction y, and the inclined surface of the next implant 200 squeezes the elastic claw 412, so that the diameter of the second opening 411 becomes larger, until the diameter of the second opening 411 is equal to the maximum diameter of the implant 200, and the next implant 200 enters the limit cavity 36. The button 21 and the connecting rod 22 move and reset along the fifth direction c under the elastic force of the second elastic member 23. After the cam 50 has gone through a first stage and a second stage, it rotates a certain angle until the limit portion 221 interferes with the next limit block 58, the cam 50 stops rotating and is in a non-triggered state, and the implant device 100 completes an implantation.

Optionally, the usage method also includes:

Step S04, repeating steps S02 and S03 to complete the implantation of multiple implants 200.

The above description is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules and units can refer to the previous It should be understood that the protection scope of the present application is not limited thereto, and any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application.

Claims (17)

An implantation device for implanting an implant, comprising: case; An observation tube is fixedly connected to the shell, and the observation tube is extended along a first direction. The observation tube includes a tube body and an elastic retaining member that are connected to each other. The tube body is enclosed to form a cavity, and the cavity is used to accommodate the implant. At least part of the elastic retaining member is located in the cavity. At least two of the elastic retaining members are enclosed to form a first opening. The diameter of the first opening when not subjected to external force is smaller than the diameter of the implant. The elastic retaining member is configured so that the diameter of the first opening becomes larger when squeezed by external force. The implant device according to claim 1, wherein the elastic retaining member comprises a first connecting portion and a protruding portion, the first connecting portion is connected to the tube body, and the protruding portion is gradually protruded toward the cavity along a first direction. The implant device according to claim 2, wherein the elastic retaining member further comprises a second connecting portion, the protruding portion is located between the first connecting portion and the second connecting portion, and the second connecting portion is connected to the tube body. The implant device according to claim 1, further comprising: The pushing mechanism is movably arranged with the shell in the first direction, and a limiting cavity is formed between the pushing mechanism and the elastic positioning member, and the limiting cavity can accommodate at least one implant. The implant device according to claim 4, wherein the number of the implants is two, one of the implants is located in the limiting cavity, and the other implant is located inside the pushing mechanism. The implant device according to claim 4, wherein the number of the implants is three, the first implant is located in the limiting cavity, and the second implant and the third implant are located inside the pushing mechanism. The implant device according to claim 4, further comprising: An inner needle connected to the housing, wherein at least one implant is sleeved on the inner needle, and at least a portion of the inner needle is located in the cavity; A driving mechanism, movably arranged with the housing and connected with the pushing mechanism; The pushing mechanism comprises: A push needle is sleeved on the inner needle, and the push needle and the inner needle are movably arranged in the first direction. The push pin is provided with a second opening at one end in the first direction. The implant device according to claim 7, wherein an elastic claw is provided at one end of the push pin facing away from the push pin seat, and the second opening is formed between a plurality of the elastic claws. The implant device according to claim 7, wherein the implant device comprises a triggered state and a non-triggered state, the triggered state comprising a first stage and a second stage; The driving mechanism comprises a cam, wherein a first driving surface and a second driving surface connected to each other are provided on the cam, wherein the cam is configured to rotate along a third direction in the trigger state, wherein in the first stage, the first driving surface drives the pushing mechanism and the implant to move along the first direction, and in the second stage, the second driving surface drives the pushing mechanism to move along a second direction, and the second direction is opposite to the first direction; The first driving surface is extended along the third direction gradually away from the rotation axis of the cam, and the second driving surface is extended along the third direction gradually approaching the rotation axis of the cam. The implant device according to claim 9, wherein the cam is further provided with a first step surface and a second step surface, the first step surface is connected to the first driving surface, the second step surface is connected to the second driving surface, the first step surface is located on the side of the first driving surface away from the second driving surface, the second step surface is located on the side of the second driving surface away from the first driving surface, and the distance from the first step surface to the rotating axis of the cam is greater than the distance from the second step surface to the rotating axis of the cam. The implant device according to claim 10, wherein the cam is further provided with a third driving surface, a fourth driving surface and a third step surface connected in sequence, the third driving surface is connected to the second step surface, the third driving surface is located on the side of the second step surface away from the second driving surface, and the distance from the second step surface to the rotating axis of the cam is greater than the distance from the third step surface to the rotating axis of the cam; The third driving surface is extended along the third direction gradually away from the rotation axis of the cam, and the fourth driving surface is extended along the third direction gradually approaching the rotation axis of the cam. The implant device according to claim 9, further comprising: A trigger button, the trigger button comprising a key and a connecting rod, the key and the housing are movably arranged, the connecting rod connects the key and the cam, and the connecting rod is configured to limit the cam and the cam in a non-trigger state, thereby limiting the cam from rotating along the third direction; In the trigger state, the button drives the connecting rod to move along a fourth direction and releases the cam. The implant device according to claim 12, wherein the cam is provided with a limit block, the connecting rod is provided with a limit portion, and the limit portion is configured to abut against the limit block in a non-triggered state, thereby limiting the cam The wheel rotates along the third direction; In the trigger state, the connecting rod moves along the fourth direction, the limiting portion releases the limiting block, and then the cam rotates along the third direction. The implant device according to claim 13, wherein a plurality of the limit blocks are arranged at intervals around the rotating shaft of the cam. The implant device according to claim 1, wherein an observation window is provided on a side of the observation tube facing away from the shell. An implant system, comprising the implant device according to any one of claims 1 to 15 and the implant. A method for using an implant system, wherein the implant device comprises an observation tube, a driving mechanism, a pushing mechanism and a trigger button, the observation tube extending along a first direction, the observation tube comprising a tube body and an elastic retaining member connected to each other, the tube body encloses a cavity, at least two of the elastic retaining members enclose a first opening, and a limiting cavity is formed between the pushing mechanism and the elastic retaining member; Usage methods include: inserting the implant system into the patient's eye; Pressing the trigger button, the trigger button drives the pushing mechanism and the implant in the limiting cavity to move along the first direction through the driving mechanism until the implant extends out of the cavity from the first opening; The driving mechanism drives the pushing mechanism to move along the second direction until the next implant enters the limiting cavity.