WO2023213129A1 - 一种眼部植入物输送器 - Google Patents

一种眼部植入物输送器 Download PDF

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Publication number
WO2023213129A1
WO2023213129A1 PCT/CN2023/079794 CN2023079794W WO2023213129A1 WO 2023213129 A1 WO2023213129 A1 WO 2023213129A1 CN 2023079794 W CN2023079794 W CN 2023079794W WO 2023213129 A1 WO2023213129 A1 WO 2023213129A1
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WO
WIPO (PCT)
Prior art keywords
link assembly
push pin
rack
housing
rotating shaft
Prior art date
Application number
PCT/CN2023/079794
Other languages
English (en)
French (fr)
Inventor
刘华
刘智勇
Original Assignee
海思盖德(苏州)生物医学科技有限公司
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Publication date
Application filed by 海思盖德(苏州)生物医学科技有限公司 filed Critical 海思盖德(苏州)生物医学科技有限公司
Publication of WO2023213129A1 publication Critical patent/WO2023213129A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00781—Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment

Definitions

  • the present application relates to the technical field of medical devices, and in particular to an eye implant delivery device.
  • Glaucoma is a group of diseases characterized by optic nerve atrophy and depression, visual field defects and vision loss. Glaucoma is related to increased intraocular pressure, usually due to the inability of the drainage channel of the eye to adequately remove aqueous humor from the anterior chamber of the eye, or due to excessive production of aqueous humor caused by the ciliary body in the eye. Patients are often accompanied by symptoms such as nausea and pain. If not treated promptly, vision loss will result. For the treatment of glaucoma, surgical filtration methods can be used to reduce intraocular pressure by creating a fluid flow path between the anterior chamber and a low-pressure area.
  • Ocular implants can be positioned in the eye to drain fluid from the anterior chamber to a variety of locations, such as Tenon's space, subconjunctival space, episcleral veins, suprachoroidal space, Schlemm's canal, and Locations such as intrascleral space.
  • Eye implants are usually made of animal-derived/non-animal-derived polymers, metals and other materials, and are generally in tubular or tubular-like form. According to the different mechanisms of reducing intraocular pressure in glaucoma, aqueous humor drainage through the subconjunctival space, episcleral vein and other sites has a more obvious antihypertensive effect.
  • the patent document with publication number CN105899170B discloses an inserter for treating glaucoma. It is used to position an intraocular shunt in the eye to treat glaucoma.
  • the driving assembly of the inserter is a cylindrical member that passes through the needle groove. Coupled to the needle and to the plunger via the plunger groove, the drive assembly further includes a sliding groove longitudinally overlapping the needle groove and the plunger groove, the sliding groove being used to couple the sliding assembly Combined with the driving assembly, the movement of the sliding assembly on the housing drives the rotation of the cylindrical member in the longitudinal direction, causing the needle and plunger to move in the axial direction.
  • the cylindrical member is provided with three grooves, and the structural design is relatively simple. Complex.
  • the purpose of this application is to at least solve the existing ocular implant conveyor's low accuracy, inability to be formed in one piece, impact on the pushing accuracy during splicing, and large friction surface during pushing, resulting in dissipation of pushing force.
  • Large, low pushing efficiency and other problems provide an ocular implant delivery device that can accurately deliver ocular implants to the subconjunctival space, thereby reducing the intraocular pressure value of patients with high intraocular pressure, structural design Simple, with a better doctor experience.
  • Embodiments of the present application provide an ocular implant transporter, which includes a housing, a wheel, a push pin link assembly, a withdrawal link assembly, a cannula, and a puncture needle.
  • a passage is provided in the direction of the distal end of the housing. hole, the cannula passes through the through hole from the inside of the housing and extends to the outside of the housing.
  • the cannula is fixedly connected to the housing.
  • the puncture needle passes through the cannula.
  • the proximal end of the puncture needle is fixedly connected to the retraction link assembly.
  • Push The push pin of the needle link assembly passes through the inner hole of the puncture needle.
  • the runner is connected in the housing through the rotating shaft.
  • the housing is provided with an opening corresponding to the runner.
  • the runner is connected to the push needle through a rack and pinion mechanism.
  • the connecting rod assembly and the retracting connecting rod assembly are drivingly connected, and as the runner rotates, it can drive the push pin connecting rod assembly to move in the direction of the far end of the housing or drive the retracting connecting rod assembly in a direction away from the far end of the housing. move.
  • sector gears are respectively provided on the rotating shafts on both sides of the runner, and racks are respectively provided at the proximal ends of the push pin link assembly and the retract link assembly.
  • the push pin link assembly and the retract link assembly are respectively The racks on the assembly extend to both sides of the runner respectively, and can mesh with the sector gears on the rotating shaft on the corresponding side.
  • the sector gears on the rotating shaft on both sides of the runner are arranged on the same side of the rotating shaft along the radial direction of the rotating shaft, and the racks provided on the push pin link assembly and the retraction link are arranged along the radial direction of the rotating wheel. They are arranged at intervals and can mesh with the sector gears on the rotating shaft on the corresponding side respectively.
  • the first rack on the push pin link assembly is disposed above the rotating axis of the runner, and the second rack on the retracting link assembly is disposed below the rotating axis of the runner, and the rotating axis of the runner is
  • the sector gear corresponding to the rack of the push pin link assembly meshes with the first rack of the push pin link assembly in the initial state, and the sector gear corresponding to the rack of the retraction link assembly on the rotating shaft of the runner
  • the gear is located on the upper part of the rotating shaft in the initial state.
  • the pushing needle connecting rod assembly no longer moves.
  • the wheel continues to rotate, it can drive the retracting connecting rod to move toward the proximal direction, achieving linear contraction of the puncture needle and improving the safety of the operation. .
  • the first rack on the push pin link assembly is disposed below the rotating shaft of the runner
  • the rack on the retracting link assembly is disposed above the rotating shaft of the runner
  • the rotating shaft of the runner is in contact with the rotating shaft of the runner.
  • the sector gear corresponding to the rack of the push pin link assembly is meshed with the first rack on the push pin link assembly in the initial state
  • the sector gear corresponding to the rack of the retraction link assembly on the rotating shaft of the runner is in In the initial state, it is located at the lower part of the rotating shaft.
  • the central angle of the sector gear ranges from 30° to 180°.
  • the push pin link assembly includes a push pin, a push pin link and a first rack.
  • the proximal end of the push pin is fixedly connected to the distal end of the push pin link.
  • the proximal end of the push pin link is connected to the first rack.
  • One rack is fixedly connected, the first rack is set horizontally, and the teeth on the first rack are set toward the rotating shaft.
  • the push pin link assembly further includes a angled portion, the angled portion is disposed on the push pin link Close to one end of the first rack and fixedly connected to the first rack, the extension direction of the angled portion deviates from the extension direction of the first rack and extends from the first rack in a direction close to the retraction link assembly.
  • the first rack can be set horizontally and the teeth on the first rack can be set towards the rotating shaft, while the push pin link can be set at The distal end of the wheel, thereby making the internal structure of the ocular implant delivery device more compact.
  • the retraction link assembly includes a connector, a retraction link and a second rack.
  • the connector is fixedly connected to the distal end of the retraction link.
  • the connector is used to connect the puncture needle.
  • the second rack Fixedly connected to the proximal end of the retraction connecting rod, the second rack is set horizontally, and the teeth on the second rack are set toward the rotating shaft.
  • the connector along the extension direction of the withdrawal link, is provided with a through hole, and the push pin of the push pin link assembly extends through the through hole into the inner hole of the puncture needle.
  • the inner diameter of the through hole is smaller than the maximum size of the push pin link of the push pin link assembly along the radial direction of the through hole.
  • the retraction link assembly further includes a angled portion.
  • the angled portion is provided at an end of the retracting link near the second rack and is fixedly connected to the second rack.
  • the extension direction of the angled portion deviates from the second rack. , and extends from the second rack toward the direction close to the push pin connecting rod assembly.
  • the ocular implant transporter further includes a limiting seat for limiting the distance between the push pin link assembly and the withdrawal link assembly.
  • the spacing between the push pin link assembly and the retraction link assembly is limited by setting a limit seat, so that they form an integral structure and improve space utilization.
  • the limiting seat includes a first extension section and a second extension section arranged to intersect, the first extension section is fixedly connected to the second extension section, and the first extension section is connected to the retraction link assembly or the push pin link.
  • the components are fixedly connected, and extend a preset distance from the retraction link component to the push pin link component, and the second extension section.
  • the first extension section extends in a direction away from the first extension section, and along the extension direction of the first extension section, the orthographic projection of the second extension section falls within the range of the retraction link assembly and the push pin link assembly.
  • the proximal end of the cannula is fixedly connected to the cannula seat, the cannula seat is disposed in the housing close to the through hole, and the cannula extends through the through hole in the housing to the outside of the housing.
  • the proximal end of the puncture needle is provided with a puncture needle seat, the puncture needle and the puncture needle seat are fixedly connected, the puncture needle passes through the cannula, and the puncture needle seat is fixedly connected to the distal end of the withdrawal link assembly.
  • the puncture needle can be fixedly connected to the retraction link assembly, so that after the eye implant is implanted, the puncture needle shrinks together with the retraction link assembly to achieve linear needle narrowing and improve the safety of the operation. .
  • the housing includes an upper housing and a lower housing.
  • the upper housing and the lower housing are fixedly connected.
  • Both the upper housing and the lower housing include a rod portion, a holding portion and a conical portion.
  • the rod portion, The holding part and the conical part are fixedly connected;
  • a runner assembly seat is provided on the inner wall of the rod part of the housing, and the runner is assembled on the runner assembly seat through the rotating shaft;
  • At least one inner wall surface is provided with a limiting block, which is used to limit the push pin connecting rod assembly and the retracting connecting rod assembly in the radial direction.
  • the block can radially limit the push needle connecting rod and the retracting connecting rod to prevent radial deviation and improve the accuracy of surgery.
  • teeth are provided on the outer circumferential surface of the runner, an operating sliding sleeve is provided on the housing at a position corresponding to the opening, the operating sliding sleeve is in sliding fit with the housing, and an operating sliding sleeve is provided on the inner wall of the operating sliding sleeve.
  • the rack part meshes with the teeth on the runner.
  • elastic pieces are provided on the outer wall of the housing, and the elastic pieces extend to the outside of the housing and cooperate with the rack portion on the inner wall of the operating slide sleeve.
  • distal end refers to the end far away from the doctor when performing eye implant surgery
  • proximal end refers to the end closer to the doctor during eye implant surgery, or it can be interpreted as
  • the distal end refers to the end close to the patient's eye that needs surgery
  • the proximal end refers to the end far away from the patient's eye.
  • the eye implant transporter of this application can first drive the push pin link assembly to move toward the distal direction of the housing through the rotation of the wheel, thereby realizing the delivery of eye implants.
  • the push needle link assembly no longer moves, and the retraction link assembly drives the puncture needle toward the proximal end of the housing to perform a needle retracting operation.
  • the push needle moves in a straight line to improve the accuracy of the operation.
  • the puncture needle can be retracted in a straight line.
  • the internal driving component structure of the eye implant conveyor of this application is greatly simplified, and only two sets of sector gears and rack transmission mechanisms are used to complete the needle push connection.
  • the required movement of the rod assembly and the retraction link assembly, and the movement distance of the push pin link assembly and the retraction link assembly is more precise, can be accurately calculated by the length of the meshing part of the sector gear and the rack.
  • the eye implant conveyor of the present application can complete the surgical operation by rotating the wheel in one direction, which is easy to operate, and the friction between the wheel and the shell is very small, and the rotation is The force of the wheel can be transmitted to the rack and pinion mechanism, reducing the loss of pushing force, making the surgical operation more labor-saving, and the system stability and reliability are higher.
  • Figure 1 is a schematic structural diagram of an ocular implant transporter according to Embodiment 1 of the present application.
  • Figure 2 is a schematic diagram of the internal structure of the ocular implant transporter according to Embodiment 1 of the present application.
  • Figure 3 is a schematic diagram of the connection structure between the puncture needle holder and the puncture needle according to Embodiment 1 of the present application.
  • Figure 4 is a schematic diagram of the connection structure of the push pin connecting rod assembly, the retracting connecting rod assembly and the runner.
  • Figure 5 is a schematic structural diagram of Embodiment 3.
  • Fig. 6 is a cross-sectional view along line A-A in Fig. 4 .
  • the reference numerals in the figure are: housing 1, rod part 11, grip part 12, conical part 13, through hole 14. Opening 15, limit block 16, wheel assembly seat 17, sleeve 2, puncture needle 3, puncture needle seat 31, wheel 4, rotating shaft 41, sector gear 42, teeth 43, push pin connecting rod assembly 5, Push pin 51, push pin connecting rod 52, first rack 53, retraction link assembly 6, connector 61, retraction link 62, second rack 63, limit seat 64, operating sliding sleeve 7, tooth Strip 71, elastic piece 72, implant 8, plug 81.
  • distal end refers to the end far away from the doctor when performing eye implant surgery
  • proximal end refers to the end closer to the doctor during eye implant surgery, or it can be interpreted as the distal end. It refers to the end close to the patient's eye that needs surgery, and the proximal end is the end far away from the patient's eye.
  • An ocular implant transporter as shown in Figures 1-4 includes a housing 1, a cannula 2, a puncture needle 3, a runner 4, a pusher link assembly 5 and a withdrawal link assembly 6.
  • the shell 1 is a split molded part, and the structure of the shell 1 can have many choices.
  • the shell 1 is divided into an upper shell and a lower shell in the direction from the proximal end to the distal end.
  • the upper shell and the lower shell can be fixedly connected by glue, buckles, or bolts.
  • Another solution is that the shell is divided into two parts along the longitudinal direction, and the two parts are connected through threaded connection, snap connection or glue fixed connection.
  • the housing 1 includes an upper housing and a lower housing.
  • the upper housing and the lower housing are fixedly connected.
  • the upper housing and the lower housing move from the proximal end to the distal end. They are respectively the rod part 11, the grip part 12 and the conical part 13.
  • the rod part 11, the grip part 12 and the conical part 13 are fixedly connected or integrally formed.
  • the conical part 13 is provided with a through hole 14 for connecting the sleeve 2. .
  • the specific shape of the housing 1 can also be adjusted and designed according to the convenience of operation.
  • a runner assembly seat 17 is provided on the inner wall of the rod of the housing 1.
  • the runner 4 is assembled on the runner assembly seat 17 through the rotating shaft.
  • the runner assembly seat 17 is provided to facilitate the assembly of the runner 4. , And the runner 4 can rotate flexibly.
  • An opening 15 is provided on the housing 1 at a position corresponding to the wheel 4, so that doctors or other surgical operators can operate the surgical process by rotating the wheel part at the opening 15.
  • the outer periphery of the runner 4 can be designed to partially protrude from the opening or be aligned with the opening of the housing 1 .
  • a limiting block 16 is provided on the inner wall surface of at least one of the rod portion 11, the holding portion 12 and the conical portion 13.
  • the limiting block 16 is used to The push pin link assembly 5 and the retraction link assembly 6 perform radial position limiting.
  • a sleeve 2 is provided at the distal end of the housing 1.
  • the sleeve 2 is a hollow tubular object that is fixedly connected to the distal through hole of the housing 1 by gluing or injection molding or other clamping mechanisms. 14 places.
  • the function is to protect the needle tube of the puncture needle 3 and to resist the trabecular meshwork tissue when the puncture needle 3 enters the subconjunctival space during the operation to limit the insertion length of the puncture needle.
  • a casing seat is provided at the proximal end of the casing 2, and the casing 2 and the casing seat are fixedly connected by gluing or injection molding.
  • the casing seat is arranged in the housing 1 close to the through hole 14, and the casing 2 is fixedly connected to the housing 1.
  • the connection method can be fixed connection such as gluing, injection molding or clamping.
  • the puncture needle 3 is a needle with a hollow cylindrical structure, and its material can be a material specified in the medical field.
  • the needle tip of the puncture needle 3 is provided with a bevel.
  • the puncture needle 3 passes through the hole of the cannula 2, and the puncture needle 3 has a clearance fit with the inner wall of the cannula 2, so that the puncture needle 3 can freely pass through the cannula 2.
  • the puncture needle 3 can be directly fixedly connected to the distal end of the retraction link assembly 6, or the puncture needle 3 can be fixedly connected to the puncture needle seat 31 through gluing, injection molding, or other clamping mechanisms, as shown in Figure 3.
  • the needle seat 31 is then fixedly connected to the retraction link assembly 6 .
  • the puncture needle 3 can pass through the hollow hole of the cannula 2 and extend to the outside of the distal end of the cannula 2.
  • the bevel of the puncture needle 3 is completely exposed to the cannula 2 for a distance, thereby controlling the depth of the puncture needle 3 penetrating under the conjunctiva in the eye.
  • the puncture needle 3 and the puncture needle holder 31 are limited in the internal space formed by the upper and lower shells, and can only be withdrawn and cannot move toward the distal end.
  • the implant 8 may be a tubular object made of flexible material, and the tubular inner cavity of the implant 8 forms an outflow channel for aqueous humor.
  • the implant 8 has a certain arch shape along the axial direction. Before the operation, the implant 8 is placed in the inner cavity of the puncture needle 3 and is limited by the distal end of the push needle. The outer wall of the implant 8 is in contact with the puncture needle. 3 inner wall There will be a certain friction force between them, which can stabilize the position of the implant 8 in the hole of the puncture needle 3.
  • both the push pin link assembly 5 and the retract link assembly 6 can have sufficient moving distance to ensure the smooth completion of the eye implant surgery, and the push pin link assembly 5 and the retract link assembly can also Only one component of the connecting rod assembly 6 can be in a moving state to avoid the needle pushing connecting rod assembly 5 and the retracting connecting rod assembly 6 from moving at the same time and affecting the progress of the operation.
  • the push pin link assembly 5 includes a push pin 51, a push pin link 52 and a first rack 53.
  • the proximal end of the push pin 51 is fixedly connected to the distal end of the push pin link 52.
  • the proximal end of the needle connecting rod is fixedly connected to the first rack 53 , the first rack 53 is arranged horizontally, and the teeth on the first rack 53 are arranged toward the rotating shaft 41 .
  • the retraction link assembly 6 includes a connector 61, a retraction link 62 and a second rack 63.
  • the connector 61 is fixedly connected to the distal end of the retraction link 62.
  • the connector 61 is To connect the puncture needle 3
  • the second rack 63 is fixedly connected to the proximal end of the retraction link 62.
  • the second rack 63 is arranged horizontally, and the teeth on the second rack 63 are arranged toward the rotating shaft 41.
  • a connection part between the retraction link 62 and the second rack 63 is provided.
  • the extension direction of the angled portion deviates from the second rack, and extends from the second rack in a direction close to the push pin link assembly.
  • the second rack can be set horizontally and the The teeth can be positioned toward the axis of rotation and the retraction link can be positioned at the distal end of the wheel, thereby making the internal structure of the ocular implant delivery device more compact.
  • the rack 53 on the push pin link assembly 5 is arranged above the rotating shaft 41 of the runner, and the second rack 63 on the retraction link assembly 6 is arranged below the rotating shaft 41 of the runner.
  • the sector gear 42 corresponding to the first rack 53 on the rotating shaft 41 of the runner meshes with the first rack 53 on the push pin link assembly 5 in the initial state, that is, in the initial state, the sector gear 42 on the rotating shaft 41 of the runner meshes with the first rack 53 on the push pin link assembly 5
  • the sector gear 42 corresponding to the first rack 53 is located at the upper part of the rotating shaft 41
  • the sector gear 42 corresponding to the second rack 63 on the rotating shaft 41 of the runner is also located at the upper part of the rotating shaft 41 in the initial state.
  • the sector gear 42 corresponding to the first rack 53 on the rotating shaft 41 of the runner is located at the upper part of the rotating shaft 41.
  • the first rack 53 and the corresponding sector gear 42 are in the initial contact meshing, so that When the runner is rotated, the corresponding sector gear 42 rolls along the first rack 53 until it is separated from the first rack 53.
  • the push pin link assembly completes the movement to the distal direction; in the initial state, the runner
  • the sector gear 42 corresponding to the second rack 63 on the rotating shaft 41 is also located at the upper part of the rotating shaft 41, that is, the second rack 63 and the corresponding sector gear 42 are in a disengaged state, and when the push pin link assembly moves in the distal direction During the process, one is kept in the disengaged state until the push pin link assembly completes the movement to the distal direction, and the second rack 62 and the corresponding sector gear 42 are just in the meshing state of initial contact.
  • the corresponding sector gear 42 rolls along the second rack 63, thereby realizing the movement of the retraction link assembly toward the proximal direction. Therefore, both the pushing pin link assembly 5 and the retracting link assembly 6 can achieve advancement and retraction in sequence.
  • the first rack 53 and the corresponding sector gear 42 may not be in mesh at the beginning of contact, but after the runner rotates a certain angle (here When the push pin link assembly 5 is rotated at a static state), the two are in the meshing state of initial contact; similarly, the second rack 63 and the corresponding sector gear 42 are in the distal direction when the push pin link assembly 5 has just completed After moving, the two may not be in the initial contact meshing, but after the runner 4 continues to rotate a certain angle (the retraction link assembly is in a stationary state when the angle is rotated here), the two may be in the initial contact state. Contact meshing.
  • the push pin link assembly 5 can drive the push pin link assembly 5 to move toward the distal direction of the housing 1, while the retraction link assembly 6 remains
  • the pusher link assembly 5 completes the delivery of the eye implant 8 and continues to rotate the wheel, the pusher link assembly 5 no longer moves, and the retraction link assembly 6 moves toward the proximal direction, achieving The linear contraction of the puncture needle 3 improves the safety of the operation.
  • the eye implant transporter of this embodiment can complete the delivery operation of the eye implant 8 and the needle narrowing operation of the puncture needle 3 by rotating the wheel 4 when performing an eye implant delivery operation. Eye implant surgery.
  • the specific process is that in the initial state, on the side of the runner 4 corresponding to the push pin link assembly 5, the sector gear 42 on the rotating shaft 41 is located at the upper part of the rotating shaft 4, and the sector gear 42 meshes with the first rack 53.
  • the sector gear 42 on the rotating shaft 41 on the other side of the rotating wheel 4 is also located at the upper part of the rotating shaft 4, and the second rack 63 at the proximal end of the retraction connecting rod 62 is located at the lower part of the rotating shaft 4, so the second rack 63 is in contact with the rotating shaft 4
  • the upper sector gear 42 is not meshed.
  • the implant 8 will be preloaded into the inner hole of the puncture needle 3 and resist the push pin 51 of the push pin link assembly 5.
  • the runner 4 is rotated toward the distal direction.
  • the sector gear 42 on the rotating shaft 41 and the proximal end of the push pin connecting rod assembly 5 The first rack 53 engages, thereby driving the push pin link assembly 5 to move toward the distal direction of the housing 1, pushing the implant 8 through the puncture hole to the patient's intraocular subconjunctival space, completing the eye implant 8
  • the sector gear 42 on the rotating shaft 41 on the other side of the runner 4 is not connected with the second rack 63 on the retracting link assembly 6 Engage, so the retraction link assembly 6 will not move in the axial direction.
  • the first rack 53 separates from the corresponding sector gear 42, so the runner 4 no longer drives the push pin link assembly 5 to move, and the second rack 63 Gradually mesh with the sector gear 42 on the corresponding side, because the second rack 63 is located below the sector gear 42, so when the runner continues to rotate, it can drive the retraction link assembly 6 to move toward the proximal direction, because in the housing 1
  • the limiting block 16 is provided, thereby limiting the radial movement of the retraction link 62 so that it can only move in the proximal direction along the axial direction of the housing 1, driving the puncture needle 3 to move into the cannula 2, completing Needle narrowing operation.
  • Embodiment 1 On the basis of Embodiment 1, the difference from Embodiment 1 is that the first rack 53 is arranged below the rotating shaft 41 of the runner, and the second rack 63 is arranged above the rotating shaft 41 of the runner.
  • the sector gear 42 on 41 corresponding to the first rack 53 meshes with the first rack 53 on the push pin link assembly 5 in the initial state, that is, the sector gear 42 on the rotating shaft 41 of the runner corresponding to the first rack 53 42 is located at the lower part of the rotating shaft 41 in the initial state, and the sector gear 42 corresponding to the second rack 63 on the rotating shaft 41 of the rotating wheel is located at the lower part of the rotating shaft 41 in the initial state.
  • the principle of this solution is exactly the same as that of the above-mentioned Embodiment 1, except that during the delivery operation of the eye implant, the rotation direction of the wheel 4 is Rotate toward the proximal direction of the housing 1.
  • the scheme structure and working principle of this embodiment are basically the same as those of Embodiment 1.
  • the main difference is that the setting positions of the first rack 53 and the second rack 63 are exactly opposite to those of Embodiment 1.
  • the initial position of the runner 4 The position and direction of rotation are exactly opposite to those in Embodiment 1.
  • the eye implant transporter of this embodiment can complete the delivery operation of the eye implant 8 and the needle narrowing operation of the puncture needle 3 by rotating the wheel 4 when performing an eye implant delivery operation. Eye implant surgery.
  • the specific process is that in the initial state, on the side of the runner 4 corresponding to the push pin link assembly 5, the sector gear 42 on the rotating shaft 41 is located at the lower part of the rotating shaft 41, and the sector gear 42 meshes with the first rack 53.
  • the sector gear 42 on the rotating shaft 41 on the other side of the runner 4 is also located at the lower part of the rotating shaft 41, and the second rack 63 at the proximal end of the retraction connecting rod 62 is located at the upper part of the rotating shaft 41, so the second rack 63 is in contact with the rotating shaft 41
  • the upper sector gear 42 is not meshed.
  • the implant 8 will be preloaded into the inner hole of the puncture needle 3 and resist the push pin 51 of the push pin link assembly 5.
  • the first rack 53 separates from the corresponding sector gear 42, so the runner 4 no longer drives the push pin link assembly 5 to move, and the second rack 63 Gradually mesh with the sector gear 42 on the corresponding side, because the second rack 63 is located above the sector gear 42, so when the runner 4 continues to rotate, it can drive the retraction link assembly 6 to move toward the proximal direction, because in the housing 1
  • a limiter block 16 is provided inside, which can limit the radial movement of the retraction link 62 so that it can only move in the proximal direction along the axial direction of the housing 1, driving the puncture needle 3 to move into the cannula 2. Complete the needle narrowing operation.
  • the connector 61 of the retraction link can also be provided with a through hole, and the push pin of the push pin link assembly extends through the through hole. into the inner hole of the puncture needle.
  • the inner diameter of the through hole is smaller than the maximum size of the push pin link assembly along the radial direction of the through hole.
  • the ocular implant transporter can also include a limiting seat 64, the limiting seat 64 is provided on the retraction link, and the push pin link 52 passes through the limiting seat 64, so that the two are integrated. structure, it can be understood that in other application scenarios, a limit seat can also be provided on the push pin link 52, so that after the retraction link passes through the limit seat on the push pin link, it forms an integral structure with the push pin link. .
  • the limiting seat 64 may include a first extension section and a second extension section arranged to intersect, the first extension section is fixedly connected to the second extension section, and the first extension section is connected to the retraction link 62 or the push pin link.
  • the push pin link 52 is fixedly connected, and extends from the retraction link 62 to the push pin link 52 by a preset distance, and the second extension section extends from the first extension section in a direction away from the first extension section, and along the extension direction of the first extension section , the orthographic projection of the second extension section falls within the range of the retraction link 62 and the push pin link 52 .
  • the push pin link 52 or the retract link 62 passes through the limiting seat, so that the distance between the push pin link and the retract link is limited and becomes an integral structure.
  • teeth 43 are provided on the outer circumferential surface of the runner, and an operating sliding sleeve 7 is provided on the housing at a position corresponding to the opening. 7 is in sliding fit with the housing 1.
  • the inner wall of the operating sliding sleeve 7 is provided with a rack portion 71 that meshes with the teeth 43 on the wheel 4.
  • an elastic piece 72 is provided on the outer wall of the housing 1 .
  • the elastic piece 72 extends to the outside of the housing 1 and cooperates with the rack portion 71 on the inner wall of the operating sliding sleeve 7 .
  • the implant 8 that meets the surgical conditions is first loaded into the sterile puncture needle 3, and then the patient's eyes are treated accordingly according to the surgical conditions. Such as anesthesia, sterilization and other treatments.
  • the puncture needle 3 of the eye implant delivery device is used to puncture the patient's site where the eye implant needs to be implanted.
  • the cannula 2 can limit the puncture of the puncture needle 3. depth to improve the accuracy of the operation.
  • the doctor holds the holding part of the eye implant transporter and slowly pushes the operating sliding sleeve 7 toward the distal or proximal end of the housing 1.
  • the operating sliding sleeve can drive the rotation The wheel rotates, which can first drive the push pin link assembly to move toward the far end of the housing 1. Because the limit block 16 is provided in the housing 1 to limit the push pin link 52, the push pin link assembly can be prevented from moving. The radial displacement of 52 causes it to move linearly only toward the distal end of the housing 1, driving the push needle 51 to move toward the puncture needle 3, pushing the eye implant through the puncture hole 3 to reach the patient's intraocular subconjunctival space. Continuing to push the operating sliding sleeve 7 in the same direction, the retraction link 62 will move toward the proximal direction of the housing.
  • the retraction link 62 is affected by the limit block 16 in the housing 1, it can only move from the housing 1 to the proximal end of the housing.
  • the distal end of the body 1 moves linearly toward the proximal direction, driving the puncture needle 3 to retract into the cannula 2 to complete the needle narrowing operation.
  • the ocular implant transporter is used to transport the implant 8 to a specific position in the eye.
  • the tubular inner cavity of the implant 8 forms a aqueous humor outflow channel to drain the aqueous humor in the eye to achieve the purpose of reducing intraocular pressure.
  • the eye implant delivery device of the present application has a compact structure, ingenious design and easy operation. It can greatly improve the accuracy, safety and efficiency of surgery, reduce the difficulty and risk of surgery, reduce the pain of patients and improve the efficiency of surgery. Surgery success rate.

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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

一种眼部植入物输送器，包括壳体（1）、转轮（4）、推针连杆组件（5）、回撤连杆组件（6）、套管（2）及穿刺针（3），壳体（1）远端的方向设有通孔（14），套管（2）从壳体（1）内穿过通孔（14）并延伸至壳体（1）外侧，套管（2）与壳体（1）固定连接，穿刺针（3）从套管（2）中穿过，穿刺针（3）的近端与回撤连杆组件（6）固定连接，推针连杆组件（5）的推针（51）从穿刺针（3）的内孔中穿过，转轮（4）通过转轴（41）连接在壳体（1）内，在壳体（1）上设有与转轮（4）对应的开口（15），转轮（4）通过齿轮齿条机构分别与推针连杆组件（5）和回撤连杆组件（6）传动连接，且随着转轮（4）的转动能带动推针连杆组件（5）向着壳体（1）远端的方向移动或是带动回撤连杆组件（6）向着远离壳体（1）远端的方向移动。

Description

一种眼部植入物输送器
相关申请的交叉引用
本申请要求享有于2022年5月6日提交的名称为“一种眼部植入物输送器”的中国专利申请CN202210488553.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及医疗器械技术领域，尤其涉及一种眼部植入物输送器。
背景技术
青光眼是一组以视神经萎缩及凹陷、视野缺损及视力下降为共同特征的疾病。青光眼与眼内压增大有关，通常由于眼睛排水通道不能从眼睛前房充分地去除房水，或由于眼睛中睫状体引起的房水过多产生，病人常伴有恶心、疼痛等症状，若不及时处理，将导致视力丧失。对于青光眼的治疗，可以通过在前房和低压区之间创建流体流动路径来降低眼内压的手术过滤方法。眼部植入物可被定位在眼睛中以将流体从前房引流至多处位置，诸如特农氏下隙、结膜下隙、巩膜上静脉、脉络膜上隙、施勒姆氏管(Schlemm canal)和巩膜内隙等位置。眼部植入物一般常选取动物源性/非动物源性高分子，金属等材料制备而成，一般以管状或类管状形式为普遍。根据青光眼眼压降低的不同机理，通过结膜下隙、巩膜上静脉等部位进行房水引流的降压效果较为明显。常见的手术路径是通过角膜微切口，经前房穿透房角区域，通过巩膜到达结膜下隙；或经前房角到达脉络膜上腔区域，此类手术需要针对这种植入物提供相应的递送机构，以将植入物送到眼内相应部位。
公开号为CN105899170B的专利文件公开一种用于治疗青光眼的插入器，用于将眼内分流器定位在眼睛内来治疗青光眼，该插入器的驱动组件是一种圆柱形构件，通过针凹槽耦合至针且经由柱塞凹槽耦合至柱塞，驱动组件还包括与针凹槽和柱塞凹槽纵向重叠的滑动凹槽，滑动凹槽用于使滑动组件耦 合至驱动组件，通过滑动组件在壳体上的移动来带动圆柱形构件在纵向方向上的旋转，使针和柱塞沿轴向移动，该圆柱形构件上设有三段凹槽，结构设计较为复杂，一方面由于圆柱形构件在纵向方向的凹槽旋转配合过长，使得结构不够紧凑，导致精确度不高；第二方面该圆柱形构件在工艺上无法一体成型组装，圆柱形构件需分两半加工后拼接在一起，也会对推送精度的造成影响；第三方面该结构运动时摩擦面较大，造成推送力的耗散较大，推送效率不高；因而，需要对现有的眼部植入物输送器进行改进。
发明内容
本申请的目的在于至少解决现有的眼部植入物输送器存在的精度不高，无法一体成型，在拼接时会对推送精度造成影响，以及推送时摩擦面较大，造成推送力耗散较大，推送效率不高等问题，提供一种眼部植入物输送器，能够实现将眼部植入物精准地递送到结膜下腔位置，从而降低高眼压患者的眼压值，结构设计简单，具有更好的医生体验感。
本申请实施例提供了一种眼部植入物输送器，包括壳体、转轮、推针连杆组件、回撤连杆组件、套管及穿刺针，壳体远端的方向设有通孔，套管从壳体内穿过通孔并延伸至壳体外侧，套管与壳体固定连接，穿刺针从套管中穿过，穿刺针的近端与回撤连杆组件固定连接，推针连杆组件的推针从穿刺针的内孔中穿过，转轮通过转轴连接在壳体内，在壳体上设有与转轮对应的开口，转轮通过齿轮齿条机构分别与推针连杆组件和回撤连杆组件传动连接，且随着转轮的转动能带动推针连杆组件向着壳体远端的方向移动或是带动回撤连杆组件向着远离壳体远端的方向移动。
在一些实施例中，转轮两侧的转轴上分别设有扇形齿轮，在推针连杆组件和回撤连杆组件的近端分别设有齿条，推针连杆组件和回撤连杆组件上的齿条分别延伸至转轮的两侧，而且分别能与对应侧的转轴上的扇形齿轮啮合。通过这种设置，能够通过转轮的转动带动推针连杆组件向着壳体的远端方向移动，将眼部植入物精准地递送到结膜下腔位置，从而降低高眼压患者的眼压值，植入完成后，通过继续转动转轮，能使回撤连杆组件带动穿刺针收缩， 实现直线收针，提高手术的安全性。
在一些实施例中，转轮两侧的转轴上的扇形齿轮沿转轴的径向设置于转轴的同一侧，推针连杆组件上和回撤连杆上设置的齿条沿转轮的径向间隔设置，且分别能与对应侧的转轴上的扇形齿轮啮合。通过这种设置，避免推针连杆组件和回撤连杆同时移动，提高手术的安全性。
在一些实施例中，推针连杆组件上的第一齿条设置在转轮的转轴的上方，回撤连杆组件上的第二齿条设置在转轮的转轴的下方，转轮的转轴上与推针连杆组件的齿条对应的扇形齿轮在初始状态下与推针连杆组件上的第一齿条啮合，且转轮的转轴上与回撤连杆组件的齿条对应的扇形齿轮在初始状态下位于转轴的上部。通过这种设置，向着壳体的远端方向转动转轮时，推针连杆组件能够带动推针向着壳体的远端方向移动，而回撤连杆组件保持不动，当推针连杆组件完成眼部植入物的输送后，推针连杆组件不再移动，继续转动转轮时，能带动回撤连杆向着近端方向移动，实现穿刺针的直线收缩，提高手术的安全性。
在一些实施例中，推针连杆组件上的第一齿条设置在转轮的转轴的下方，回撤连杆组件上的齿条设置在转轮的转轴的上方，转轮的转轴上与推针连杆组件的齿条对应的扇形齿轮在初始状态下与推针连杆组件上的第一齿条啮合，且转轮的转轴上与回撤连杆组件的齿条对应的扇形齿轮在初始状态下位于转轴的下部。该方案的原理与上述的方案完全相同，只是在进行眼部植入物的输送手术时，转轮的转动方向为向着壳体的近端方向转动。
在一些实施例中，扇形齿轮的圆心角范围为30°-180°。通过这种设置，既能使推针连杆组件和回撤连杆组件都具有充足的活动距离，保障眼部植入手术的顺利完成，又能使推针连杆组件和回撤连杆组件中只能有一个组件处于移动状态，避免推针连杆组件和回撤连杆组件同时移动而影响手术的进行。
在一些实施例中，推针连杆组件包括推针、推针连杆和第一齿条，推针的近端与推针连杆的远端固定连接，推针连杆的近端与第一齿条固定连接，第一齿条水平设置，且第一齿条上的齿向着转轴设置。通过这种设置，能通过转动转轮带动推针连杆组件向着远端方向移动，实现眼部植入物向着患者眼部手术部位的输送，保障手术顺利完成。
在一些实施例中，推针连杆组件还包括折角部，折角部设置于推针连杆 靠近第一齿条的一端且与第一齿条固定连接，折角部的延伸方向偏离第一齿条的延伸方向，且由第一齿条向靠近回撤连杆组件的方向延伸延伸。通过设置折角使推针连杆与回撤连杆组件之间的距离减小，第一齿条能够水平设置且第一齿条上的齿能够向着转轴设置，而推针连杆则能设置在转轮的远端，进而使眼部植入物输送器的内部结构更加紧凑。
在一些实施例中，回撤连杆组件包括连接头、回撤连杆及第二齿条，连接头与回撤连杆的远端固定连接，连接头用于连接穿刺针，第二齿条与回撤连杆近端固定连接，第二齿条水平设置，且第二齿条上的齿向着转轴设置。通过这种设置，能通过转动转轮带动回撤连杆组件向着近端方向移动，在植入物输送完成后，实现穿刺针的收针操作，保障收针过程直线收针，提高手术的安全性。
在一些实施例中，沿回撤连杆的延伸方向，连接头开设有通孔，推针连杆组件的推针穿过通孔延伸入穿刺针的内孔中。通过设置通孔从而为推针连杆组件的推针导向，提高手术的安全性。
在一些实施例中，沿回撤连杆的延伸方向，通孔的内径小于推针连杆组件的推针连杆沿通孔径向的最大尺寸。通过这种设置，使得推针连杆组件的移动距离得以限制，从而防止推针连杆组件移动的距离超过预期范围，提高了手术的安全性。
在一些实施例中，回撤连杆组件还包括折角部，折角部设置于回撤连杆靠近第二齿条的一端且与第二齿条固定连接，折角部的延伸方向偏离第二齿条，且由第二齿条向靠近推针连杆组件的方向延伸。通过设置折角使推针连杆与回撤连杆组件之间的距离减小，第二齿条能够水平设置且第一齿条上的齿能够向着转轴设置，而回撤连杆则能设置在转轮的远端，进而使眼部植入物输送器的内部结构更加紧凑。
在一些实施例中，眼部植入物输送器还包括限位座，限位座用于限制推针连杆组件与回撤连杆组件之间的距离。通过设置限位座限制推针连杆组件和回撤连杆组件之间的间距，使其组成一个整体结构，提高空间利用率。
在一些实施例中，限位座包括相交设置的第一延伸段和第二延伸段，第一延伸段与第二延伸段固定连接，第一延伸段与回撤连杆组件或推针连杆组件固定连接，且由回撤连杆组件向推针连杆组件延伸预设距离，第二延伸段 由第一延伸段向远离第一延伸段的方向延伸，且沿第一延伸段的延伸方向，第二延伸段的正投影落入回撤连杆组件和推针连杆组件范围内。通过这种设置，使得推针连杆组件或回撤连杆组件穿过该限位座，从而使推针连杆组件和回撤连杆组件之间的距离被限制而成为一个整体结构。
在一些实施例中，套管的近端与套管座固定连接，套管座设置在壳体内靠近通孔的位置，套管穿过壳体上的通孔延伸至壳体的外侧。通过这种设置，能使套管与壳体的连接更牢固，并便于穿刺针穿过套管，对眼部植入物需要输送的位置处进行穿刺。
在一些实施例中，穿刺针的近端设有穿刺针座，穿刺针和穿刺针座固定连接，穿刺针从套管中穿过，穿刺针座与回撤连杆组件的远端固定连接。通过这种设置，穿刺针能与回撤连杆组件固定连接，便于眼部植入物植入完成后，穿刺针随着回撤连杆组件共同收缩，实现直线收针，提高手术的安全性。
在一些实施例中，壳体包括上壳体和下壳体，上壳体和下壳体固定连接，上壳体和下壳体都包括杆部、握持部和圆锥形部，杆部、握持部和圆锥形部固定连接；在壳体的杆部内壁上设有转轮装配座，转轮通过转轴装配在转轮装配座上；在杆部、握持部和圆锥形部中的至少一个的内壁面上设有限位块，限位块用于对推针连杆组件和回撤连杆组件进行径向上的限位。通过设置握持部，便于医生在手术时握持眼部植入物输送器进行手术，通过设置转轮装配座便于转轮的装配，并能使转轮灵活转动，通过在壳体内设置限位块，能对推针连杆和回撤连杆进行径向限位，防止其发生径向偏移，提高手术的精度。
在一些实施例中，转轮的外周面上设有齿，在壳体上与开口对应的位置处设有操作滑套，操作滑套与壳体滑动配合，在操作滑套的内壁上设有与转轮上的齿啮合的齿条部。通过设置操作滑套，便于医生用手推动操作滑套来进行手术，与直接转动转轮来进行手术的方案相比，能大幅度提高眼部植入物输送器操作的灵活性和便利性，使手术过程更省力，效率更高。
在一些实施例中，壳体的外壁上设有弹片，弹片延伸至壳体的外侧，并与操作滑套内壁上的齿条部相配合。通过设置弹片，医生在推动操作滑套进行手术时，会有明显的触感反馈，转轮每移动一个齿，弹片都会与齿结合，能有效防止在手术时发生误操作而对转轮逆向转动，提高眼部植入物输送器 的操作的安全性，而且通过设置弹片，能够避免医生在手术时用力过猛，转轮转动速度过快，而影响手术质量，进一步提高手术的安全性。
需要说明的是，上述的远端是指在进行眼部植入手术时，远离医生的一端，近端是指在进行眼部植入手术时，离医生较近的一端，或者可以解释为，远端是指靠近患者需要进行手术的眼部的一端，近端则是远离患者眼部的一端。
本申请具有积极的效果：1)本申请的眼部植入物输送器，通过转轮的转动能够先带动推针连杆组件向着壳体的远端方向移动，实现眼部植入物的输送，在眼部植入物输送到位后，继续转动转轮时，推针连杆组件不再移动，回撤连杆组件带动穿刺针向着壳体近端方向进行收针操作，通过这种设置，能简化眼部植入物输送器的结构，在眼部植入物输送过程中，推针沿直线移动，提高手术的精度，并且眼部植入物输送完成后，能对穿刺针进行直线收针，提高手术的安全性；2)本申请的眼部植入物输送器，内部的驱动组件结构大幅度简化，仅采用了两组扇形齿轮与齿条的传动机构，即可完成推针连杆组件和回撤连杆组件的所需的移动，且推针连杆组件和回撤连杆组件的移动距离的精度更高，能通过扇形齿轮与齿条的啮合部分的长度来进行精确计算，进一步提高手术的精度；3)本申请的眼部植入物输送器，通过单向转动转轮即可完成手术操作，操作简便，且转轮与外壳之间的摩擦力很小，转动转轮的力能够传递至齿轮齿条机构，减少了推送力的损耗，手术操作更加省力，系统稳定性和可靠性更高。
附图说明
图1为本申请的实施例1的眼部植入物输送器的结构示意图。
图2为本申请的实施例1的眼部植入物输送器的内部结构示意图。
图3为本申请的实施例1的穿刺针座和穿刺针的连接结构示意图。
图4为推针连杆组件、回撤连杆组件与转轮的连接结构示意图。
图5为实施例3的结构示意图。
图6为图4中的A-A向剖视图。
图中的附图标记为，壳体1，杆部11，握持部12，圆锥形部13，通孔 14，开口15，限位块16，转轮装配座17，套管2，穿刺针3，穿刺针座31，转轮4，转轴41，扇形齿轮42，齿43，推针连杆组件5，推针51，推针连杆52，第一齿条53，回撤连杆组件6，连接头61，回撤连杆62，第二齿条63，限位座64，操作滑套7，齿条71，弹片72，植入物8，塞子81。
具体实施方式
下面通过实施例对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，远端是指在进行眼部植入手术时，远离医生的一端，近端是指在进行眼部植入手术时，离医生较近的一端，或者可以解释为，远端是指靠近患者需要进行手术的眼部的一端，近端则是远离患者眼部的一端。
实施例1
如图1-4所示的一种眼部植入物输送器，包括壳体1、套管2、穿刺针3、转轮4、推针连杆组件5及回撤连杆组件6。
壳体1为分体成型件，壳体1的结构可以有多种选择，例如，如附图2所示，以壳体1从近端向着远端的方向分为上壳体和下壳体，上壳体和下壳体可以通过胶水固定连接或是通过卡扣固定连接，或是螺栓固定连接。另一种方案为，壳体沿着纵向分为两部分，两部分之间通过螺纹连接、卡扣连接或胶水固定连接等方式连接。
下面以附图1所示的结构为例进行说明，壳体1包括上壳体和下壳体，上壳体和下壳体固定连接，上壳体和下壳体从近端到远端方向分别为杆部11、握持部12和圆锥形部13，杆部11、握持部12和圆锥形部13固定连接或一体成型，在圆锥形13部设有连接套管2的通孔14。通过设置握持部12，便于医生在手术时握持眼部植入物输送器进行手术，壳体1的具体形状也可以根据操作的便利性进行调整设计。
如图2所示，在壳体1的杆部内壁面上设有转轮装配座17，转轮4通过转轴装配在转轮装配座17上，通过设置转轮装配座17便于转轮4的装配， 并能使转轮4能够灵活转动。
在壳体1上与转轮4对应的位置设有开口15，使医生或其他手术操作者通过转动开口15处的转轮部位的方式，可以对手术过程进行操作。作为选择性方案，转轮4的外周可以部分凸起出于开口处设计或是与壳体1的开口对齐。
在壳体1的内部，在所述杆部11、所述握持部12和所述圆锥形部13中的至少一个的内壁面上设有限位块16，所述限位块16用于对所述推针连杆组件5和所述回撤连杆组件6进行径向上的限位。通过在壳体1上设置足够的限位能防止回撤连杆62和推针连杆52在壳体1内径向上发生偏移，提高手术的精度。
结合图2所示，在壳体1的远端设有套管2，套管2为中空的管状物，通过胶粘或者注塑或者通过其他夹紧机构固定连接在壳体1的远端通孔14处。作用是保护穿刺针3针管和在手术过程中在穿刺针3进入结膜下腔时，顶住小梁网组织从而限定穿刺针的插入长度。
可选地，在套管2的近端设有套管座，套管2与套管座通过胶粘或者注塑等方式固定连接。套管座设置在壳体1内靠近通孔14的位置，套管2与壳体1固定连接，连接方式可以是胶粘、注塑或是卡接等固定连接方式。穿刺针3为空心柱状结构的针，其材质可以为医疗领域所规定的材质，在穿刺针3的针尖处设有斜口。穿刺针3从套管2的孔中穿过，而且穿刺针3与套管2内壁间隙配合，使穿刺针3能够在套管2内自由穿过。穿刺针3可以直接与回撤连杆组件6的远端固定连接，也可以是穿刺针3通过胶粘或者注塑、或者其他夹紧机构与穿刺针座31固定连接，如图3所示，穿刺针座31再与回撤连杆组件6固定连接。
穿刺针3能穿过套管2的中空孔，延伸至套管2的远端外侧，穿刺针3的斜口完全露出套管2一段距离，从而控制穿刺针3穿入眼内结膜下的深度。穿刺针3及穿刺针座31被限位在上下壳组成的内部空间，且只能回撤，不能朝向远端移动。
植入物8可选为柔性材质的管状物，植入物8的管状内腔形成房水流出通道。植入物8沿轴向具有一定的拱形，在进行手术前，植入物8被放置在穿刺针3内腔中，且被推针远端限位，植入物8的外壁与穿刺针3的内壁之 间会产生一定的摩擦力，可以使植入物8在穿刺针3孔内的位置稳定。
如图2和图4所示转轴41的两端分别延伸至转轮的两侧，在转轮4两侧的转轴上分别设有扇形齿轮42，扇形齿轮42的圆心角范围为30°-180°，例如，在附图2和4所示的方案中，扇形齿轮42的圆心角为30°-60°。通过这种设置，既能使推针连杆组件5和回撤连杆组件6都具有充足的活动距离，保障眼部植入手术的顺利完成，又能使推针连杆组件5和回撤连杆组件6中只能有一个组件处于移动状态，避免推针连杆组件5和回撤连杆组件6同时移动而影响手术的进行。
如图2和4所示，推针连杆组件5包括推针51、推针连杆52和第一齿条53，推针51的近端与推针连杆52的远端固定连接，推针连杆的近端与第一齿条53固定连接，第一齿条53水平设置，且第一齿条53上的齿向着所述转轴41设置。
如图2和4所示，回撤连杆组件6包括连接头61、回撤连杆62及第二齿条63，连接头61与回撤连杆62的远端固定连接，连接头61用于连接穿刺针3，第二齿条63与回撤连杆62近端固定连接，第二齿条63水平设置，且第二齿条63上的齿向着所述转轴41设置。为了缩小推针连杆52与回撤连杆62之间的间距，使眼部植入物输送器的内部结构更加紧凑，在回撤连杆62与第二齿条63之间的连接部位设有折角部，折角部的延伸方向偏离第二齿条，且由第二齿条向靠近推针连杆组件的方向延伸，通过设置折角使第二齿条能够水平设置且第一齿条上的齿能够向着转轴设置，而回撤连杆则能设置在转轮的远端，进而使眼部植入物输送器的内部结构更加紧凑。
作为第一种实施方案，推针连杆组件5上的齿条53设置在转轮的转轴41的上方，回撤连杆组件上6的第二齿条63设置在转轮的转轴41的下方，转轮的转轴41上与第一齿条53对应的扇形齿轮42在初始状态下与推针连杆组件5上的第一齿条53啮合，即在初始状态下，转轮的转轴41上与第一齿条53对应的扇形齿轮42位于转轴41的上部，且转轮的转轴41上与第二齿条63对应的扇形齿轮42在初始状态下也位于转轴41的上部。
需要说明的是，此处上方、下方是一种相对的概念，是针对齿条和转轴两者之间相对的概念，表明对于操作者而言，相对于转轴，推针连杆组件的齿条和回撤连杆组件的齿条，前者在上方，后者在下方。
而在初始状态时，转轮的转轴41上与第一齿条53对应的扇形齿轮42位于转轴41的上部，此时第一齿条53与对应的扇形齿轮42处于刚开始接触的啮合，从而使得转轮转动时，对应的扇形齿轮42沿着第一齿条53滚动直到脱离第一齿条53，此时推针连杆组件完成向远端方向的移动；在初始状态时，转轮的转轴41上与第二齿条63对应的扇形齿轮42也位于转轴41的上部，也即第二齿条63与对应的扇形齿轮42处于脱离状态，且在推针连杆组件向远端方向移动过程中，一种保持脱离状态，直到推针连杆组件完成向远端方向的移动后，第二齿条62与对应的扇形齿轮42正好处于刚开始接触的啮合状态，继续转动转轮时，对应的扇形齿轮42沿着第二齿条63滚动，从而实现回撤连杆组件向着近端方向移动。因此，推针连杆组件5和回撤连杆组件6两者能够有顺序地实现推进和回撤。
可以理解，在其他应用场景中，在初始状态时，第一齿条53与对应的扇形齿轮42也可以是，并不处于刚开始接触的啮合，而是在转轮转动一定角度后(此处转动角度时推针连杆组件处于静止状态)，两者处于刚开始接触的啮合；同理，第二齿条63与对应的扇形齿轮42，在推针连杆组件5刚完成向着远端方向移动后，两者也可以是，并不处于刚开始接触的啮合，而是在转轮4继续转动一定角度后(此处转动角度时回撤连杆组件处于静止状态)，两者处于刚开始接触的啮合。
通过这种设置，向着壳体1的远端方向转动转轮时，推针连杆组件5能够带动推针连杆组件5向着壳体1的远端方向移动，而回撤连杆组件6保持不动，当推针连杆组件5完成眼部植入物8的输送后，继续转动转轮时，推针连杆组件5不再移动，回撤连杆组件6向着近端方向移动，实现穿刺针3的直线收缩，提高手术的安全性。
本实施例的眼部植入物输送器，在进行眼部植入物输送手术时，可以通过转动转轮4来完成眼部植入物8的输送操作以及穿刺针3的收针操作，完成眼部植入手术。
具体过程为，在初始状态时，转轮4上与推针连杆组件5对应的一侧，转轴41上的扇形齿轮42位于转轴4的上部，且扇形齿轮42与第一齿条53啮合，转轮4另一侧的转轴41上的扇形齿轮42也位于转轴4的上部，而回撤连杆62近端的第二齿条63位于转轴4的下部，因而第二齿条63与转轴4 上的扇形齿轮42未啮合。
植入物8会预先装入穿刺针3的内孔中，抵住推针连杆组件5的推针51，植入物8的远端有塞子81进行限位，防止植入物8掉落。在进行植入前，拔掉塞子81，使眼部植入物输送器解锁，然后使用穿刺针3对患者的手术部位进行穿刺，因为穿刺针3漏出套管2的长度是固定的，所以套管2能对穿刺针3的穿刺深度进行限制，穿刺完成后开始植入操作。
第一阶段时如图2箭头方向所示，向着远端的方向转动转轮4，如图4所示的箭头方向所示，转轴41上的扇形齿轮42与推针连杆组件5近端的第一齿条53啮合，因而能带动推针连杆组件5向着壳体1的远端方向移动，推动植入物8通过穿刺孔到达患者的眼内结膜下腔，完成眼部植入物8的输送操作；与此同时，如图2中的箭头方向所示，在转轮4的另一侧的转轴41上的扇形齿轮42因为不与回撤连杆组件6上的第二齿条63啮合，因而回撤连杆组件6不会在轴向上移动。
当继续向着远端方向转动转轮4进入第二阶段时，第一齿条53与对应的扇形齿轮42分离，因而转轮4不再带动推针连杆组件5移动，而第二齿条63逐渐与对应侧的扇形齿轮42啮合，因为第二齿条63位于扇形齿轮42的下方，因而继续转动转轮时，能带动回撤连杆组件6向着近端方向移动，因为在壳体1内设置了限位块16，因而能限制回撤连杆62的径向移动，使其只能沿着壳体1的轴向向着近端方向移动，带动穿刺针3移动至套管2内，完成收针操作。
至此，完成将眼部植入物的输送手术，对医生等操作者来说，其只需要对转轮4进行操作即可完成植入物输送过程，简便易行。
实施例2
在实施例1的基础上，与实施例1不同的是，第一齿条53设置在转轮的转轴41的下方，第二齿条63设置在转轮的转轴41的上方，转轮的转轴41上与第一齿条53对应的扇形齿轮42在初始状态下与推针连杆组件5上的第一齿条53啮合，即转轮的转轴41上与第一齿条53对应的扇形齿轮42在初始状态下位于转轴41的下部，且转轮的转轴41上与第二齿条63对应的扇形齿轮42在初始状态下位于转轴41的下部。该方案的原理与上述实施例1的方案完全相同，只是在进行眼部植入物的输送手术时，转轮4的转动方向为 向着壳体1的近端方向转动。
本实施例的方案结构和工作原理与实施例1基本相同，区别主要是第一齿条53和第二齿条63的设置位置与实施例1正好相反，在手术操作时，转轮4的初始位置和转动方向与实施例1正好相反。虽然没有附图来示意该实施例，但是并不会影响技术人员对该实施方案的理解。
本实施例的眼部植入物输送器，在进行眼部植入物输送手术时，可以通过转动转轮4来完成眼部植入物8的输送操作以及穿刺针3的收针操作，完成眼部植入手术。
具体过程为，在初始状态时，转轮4上与推针连杆组件5对应的一侧，转轴41上的扇形齿轮42位于转轴41的下部，且扇形齿轮42与第一齿条53啮合，转轮4另一侧的转轴41上的扇形齿轮42也位于转轴41的下部，而回撤连杆62近端的第二齿条63位于转轴41的上部，因而第二齿条63与转轴41上的扇形齿轮42未啮合。
植入物8会预先装入穿刺针3的内孔中，抵住推针连杆组件5的推针51，植入物8的远端有塞子81进行限位，防止植入物8掉落。在进行植入前，拔掉塞子81，使眼部植入物输送器解锁，然后使用穿刺针3对患者的手术部位进行穿刺，因为穿刺针3漏出套管2的长度是固定的，所以套管2能对穿刺针3的穿刺深度进行限制，穿刺完成后开始植入操作。
第一阶段时，可参考图2，但是和图2中箭头方向相反，向着壳体近端的方向转动转轮4，转轴41上的扇形齿轮42与推针连杆组件5近端的第一齿条53啮合，因而能带动推针连杆组件5向着壳体1的远端方向移动，推动植入物8通过穿刺孔到达患者的眼内结膜下腔，完成眼部植入物8的输送操作；与此同时，在转轮的另一侧的转轴41上的扇形齿轮42因为不与回撤连杆组件6上的第二齿条63啮合，因而回撤连杆组件6不会在轴向上移动。
当继续向着近端方向转动转轮4进入第二阶段时，第一齿条53与对应的扇形齿轮42分离，因而转轮4不再带动推针连杆组件5移动，而第二齿条63逐渐与对应侧的扇形齿轮42啮合，因为第二齿条63位于扇形齿轮42的上方，因而继续转动转轮4时，能带动回撤连杆组件6向着近端方向移动，因为在壳体1内设置了限位块16，因而能限制回撤连杆62的径向移动，使其只能沿着壳体1的轴向向着近端方向移动，带动穿刺针3移动至套管2内， 完成收针操作。
至此，完成将眼部植入物的输送手术，对医生等操作者来说，其只需要对转轮4进行操作即可完成植入物输送过程，简便易行。
实施例3
可选地，如图2和图4所示，沿回撤连杆的延伸方向，回撤连杆的连接头61还可以开设有通孔，推针连杆组件的推针穿过通孔延伸入穿刺针的内孔中。通过设置通孔从而为推针连杆组件的推针导向，提高手术的安全性。可选的，沿回撤连杆的延伸方向，通孔的内径小于推针连杆组件的推针连杆沿通孔径向的最大尺寸，通过这种设置，使得推针连杆组件的移动距离得以限制，从而防止推针连杆组件移动的距离超过预期范围，提高了手术的安全性。
可选地，眼部植入物输送器还可以包括限位座64，回撤连杆上设有限位座64，推针连杆52从限位座64中穿过，从而使两者形成整体结构，可以理解，在其他应用场景中，推针连杆52上也可设置限位座，使得回撤连杆穿过推针连杆上的限位座后，与推针连杆形成整体结构。这种整体结构的设计使空间利用率高，内部结构更加紧凑。可选的，限位座64可以包括相交设置的第一延伸段和第二延伸段，第一延伸段与第二延伸段固定连接，第一延伸段与回撤连杆62或推针连杆52固定连接，且由回撤连杆62向推针连杆52延伸预设距离，第二延伸段由第一延伸段向远离第一延伸段的方向延伸，且沿第一延伸段的延伸方向，第二延伸段的正投影落入回撤连杆62和推针连杆52范围内。通过这种设置，使得推针连杆52或回撤连杆62穿过该限位座，从而使推针连杆和回撤连杆之间的距离被限制而成为一个整体结构。
如图5和图6所示，在实施例1或2的基础上，转轮的外周面上设有齿43，在壳体上与开口对应的位置处设有操作滑套7，操作滑套7与壳体1滑动配合，在操作滑套7的内壁上设有与转轮4上的齿43啮合的齿条部71。通过设置操作滑套7，便于医生用手推动操作滑套来进行手术，与直接转动转轮来进行手术的方案相比，能大幅度提高眼部植入物输送器操作的灵活性和便利性，使手术过程更省力，效率更高。
可选地，如图6所示，壳体1的外壁上设有弹片72，弹片72延伸至壳体1的外侧，并与操作滑套7内壁上的齿条部71相配合。通过设置弹片72，医生在推动操作滑套7进行手术时，会有明显的触感反馈，转轮4每移动一 个齿，弹片72都会与齿43结合，能有效防止在手术时发生误操作而对转轮逆向转动，提高眼部植入物输送器的操作的安全性，而且通过设置弹片，能够避免医生在手术时用力过猛，转轮转动速度过快，而影响手术质量，进一步提高手术的安全性。
本实施例的眼部植入物输送器，在使用时，首先将符合手术条件的植入物8装入无菌的穿刺针3内，然后根据手术条件，对患者眼部进行相应的处理，例如麻醉、除菌等处理，等到要进行手术时，使用眼部植入物输送器的穿刺针3穿刺患者需要植入眼部植入物的部位，通过套管2能限制穿刺针3的穿刺深度，提高手术的精度，穿刺到位后，医生握持眼部植入物输送器的握持部，缓慢地向着壳体1的远端或近端推动操作滑套7，操作滑套能够带动转轮转动，进而能够先带动推针连杆组件向着壳体1的远端移动，因为在壳体1内设有对推针连杆52限位的限位块16，所以能避免推针连杆52的径向位移，使其只能向着壳体1的远端直线移动，带动推针51向着穿刺针3移动，推动眼部植入物通过穿刺孔3到达患者的眼内结膜下腔。继续同向推动操作滑套7，回撤连杆62会向着壳体的近端方向移动，在移动时，因为回撤连杆62受到壳体1内限位块16的影响，只能从壳体1的远端向近端方向直线移动，带动穿刺针3缩回到套管2内部，完成收针的操作。利用该眼部植入物输送器将植入物8输送到眼内特定位置，植入物8的管状内腔形成房水流出通道，将眼内的房水排出，达到降低眼压的目的。
本申请的眼部植入物输送器，结构紧凑，设计巧妙，且操作简便，能够极大地提高手术的精确性、安全性以及手术效率，降低手术操作难度和手术风险，减轻患者的痛苦，提高手术的成功率。
尽管已经示出和描述了本申请的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本申请的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由所附权利要求及其等同物限定。

Claims (19)

  1. 一种眼部植入物输送器，包括壳体、转轮、推针连杆组件、回撤连杆组件、套管及穿刺针，所述壳体远端的方向设有通孔，所述套管从所述壳体内穿过所述通孔并延伸至所述壳体的外侧，所述套管与所述壳体固定连接，所述穿刺针从所述套管中穿过，所述穿刺针的近端与所述回撤连杆组件固定连接，所述推针连杆组件的推针从所述穿刺针的内孔中穿过，所述转轮通过转轴连接在所述壳体内，在所述壳体上设有与所述转轮对应的开口，所述转轮通过齿轮齿条机构分别与所述推针连杆组件和所述回撤连杆组件传动连接，且随着所述转轮的转动能带动所述推针连杆组件向着所述壳体的远端的方向移动或是带动所述回撤连杆组件向着远离所述壳体的远端的方向移动。
  2. 根据权利要求1所述眼部植入物输送器，其中，所述转轮两侧的转轴上分别设有扇形齿轮，在所述推针连杆组件和所述回撤连杆组件的近端分别设有齿条，所述推针连杆组件和所述回撤连杆组件上的齿条分别延伸至所述转轮的两侧，而且分别能与对应侧的转轴上的扇形齿轮啮合。
  3. 根据权利要求2所述眼部植入物输送器，其中，所述转轮两侧的转轴上的扇形齿轮沿所述转轴的径向设置于所述转轴的同一侧，所述推针连杆组件上和所述回撤连杆上设置的齿条沿所述转轮的径向间隔设置，且所述分别能与对应侧的转轴上的扇形齿轮啮合。
  4. 根据权利要求3所述眼部植入物输送器，其中，所述推针连杆组件上的第一齿条设置在所述转轮的转轴的上方，所述回撤连杆组件上的第二齿条设置在所述转轮的转轴的下方，所述转轮的转轴上与所述推针连杆组件的齿条对应的扇形齿轮在初始状态下与所述推针连杆组件上的第一齿条啮合，且所述转轮的转轴上与所述回撤连杆组件的齿条对应的扇形齿轮在初始状态下位于所述转轴的上部。
  5. 根据权利要求3所述眼部植入物输送器，其中，所述推针连杆组件上的第一齿条设置在所述转轮的转轴的下方，所述回撤连杆组件上的齿条设置在所述转轮的转轴的上方，所述转轮的转轴上与所述推针连杆组件的齿条对应的扇形齿轮在初始状态下与所述推针连杆组件上的第一齿条啮合，且所述转轮的转轴上与所述回撤连杆组件的齿条对应的扇形齿轮在初始状态下位于所述转轴的下部。
  6. 根据权利要求1所述眼部植入物输送器，其中，所述扇形齿轮的圆心 角范围为30°-180°。
  7. 根据权利要求1所述眼部植入物输送器，其中，所述推针连杆组件包括推针、推针连杆和第一齿条，所述推针的近端与所述推针连杆的远端固定连接，所述推针连杆的近端与所述第一齿条固定连接，所述第一齿条水平设置，且所述第一齿条上的齿向着所述转轴设置。
  8. 根据权利要求7所述的眼部植入物输送器，其中，所述推针连杆组件还包括折角部，所述折角部设置于所述推针连杆靠近所述第一齿条的一端且与所述第一齿条固定连接，所述折角部的延伸方向偏离所述第一齿条的延伸方向，且由所述第一齿条向靠近所述回撤连杆组件的方向延伸延伸。
  9. 根据权利要求1所述眼部植入物输送器，其中，所述回撤连杆组件包括连接头、回撤连杆及第二齿条，所述连接头与所述回撤连杆的远端固定连接，所述第二齿条与所述回撤连杆的近端固定连接，所述第二齿条水平设置，且所述第二齿条上的齿向着所述转轴设置。
  10. 根据权利要求9所述的眼部植入物输送器，其中，沿所述回撤连杆的延伸方向，所述连接头开设有通孔，所述推针连杆组件的推针穿过所述通孔延伸入所述穿刺针的内孔中。
  11. 根据权利要求10所述的眼部植入物输送器，其中，沿所述回撤连杆的延伸方向，所述通孔的内径小于所述推针连杆组件的推针连杆沿所述通孔径向的最大尺寸。
  12. 根据权利要求9所述的眼部植入物输送器，其中，所述回撤连杆组件还包括折角部，所述折角部设置于所述回撤连杆靠近所述第二齿条的一端且与所述第二齿条固定连接，所述折角部的延伸方向偏离所述第二齿条，且由所述第二齿条向靠近所述推针连杆组件的方向延伸。
  13. 根据权利要求1所述眼部植入物输送器，其中，所述眼部植入物输送器还包括限位座，所述限位座用于限制所述推针连杆组件与所述回撤连杆组件之间的距离。
  14. 根据所述权利要求13所述的眼部植入物输送器，其中，所述限位座包括相交设置的第一延伸段和第二延伸段，所述第一延伸段与所述第二延伸段固定连接，所述第一延伸段与所述回撤连杆组件或推针连杆组件固定连接，且由所述回撤连杆组件向所述推针连杆组件延伸预设距离，所述第二延伸段 由所述第一延伸段向远离所述第一延伸段的方向延伸，且沿所述第一延伸段的延伸方向，所述第二延伸段的正投影落入所述回撤连杆组件和所述推针连杆组件范围内。
  15. 根据权利要求1所述眼部植入物输送器，其中，所述套管的近端与套管座固定连接，所述套管座设置在所述壳体内靠近所述通孔的位置，所述套管穿过所述壳体上的通孔延伸至所述壳体的外侧。
  16. 根据权利要求1所述眼部植入物输送器，其中，所述穿刺针的近端设有穿刺针座，所述穿刺针和所述穿刺针座固定连接，所述穿刺针从所述套管中穿过，所述穿刺针座与所述回撤连杆组件的远端固定连接。
  17. 根据权利要求1所述眼部植入物输送器，其中，所述壳体包括上壳体和下壳体，所述上壳体和所述下壳体固定连接，所述上壳体和所述下壳体都包括杆部、握持部和圆锥形部，所述杆部、所述握持部和所述圆锥形部固定连接；在所述壳体的杆部的内壁上设有转轮装配座，所述转轮通过所述转轴装配在所述转轮装配座上；在所述杆部、所述握持部和所述圆锥形部中的至少一个的内壁面上设有限位块，所述限位块用于对所述推针连杆组件和所述回撤连杆组件进行径向上的限位。
  18. 根据权利要求1所述眼部植入物输送器，其中，所述转轮的外周面上设有齿，在所述壳体上与开口对应的位置处设有操作滑套，所述操作滑套与所述壳体滑动配合，在所述操作滑套的内壁上设有与所述转轮上的齿啮合的齿条部。
  19. 根据权利要求18所述眼部植入物输送器，其中，所述壳体的外壁上设有弹片，所述弹片延伸至所述壳体的外侧，并与所述操作滑套内壁上的齿条部相配合。
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CN111643269A (zh) * 2020-05-14 2020-09-11 江苏百视通医疗器械有限公司 一种植入体的多次植入装置及植入方法
CN114848289A (zh) * 2022-05-06 2022-08-05 海思盖德(苏州)生物医学科技有限公司 一种眼部植入物输送器

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