Drainage tube delivery device

Abstract

The utility model provides a drainage tube delivery device, and relates to the technical field of drainage tube implantation. The drainage tube delivery device comprises a shell, a puncture needle, a mounting seat, a push rod and a driving mechanism, the shell is provided with a first end and a second end which are opposite, and the puncture needle is arranged at the second end; the puncture needle is installed on the installation base, an inner cavity for containing the drainage tube is formed in the puncture needle, and the push rod can move in the length direction of the inner cavity; the driving mechanism comprises a sliding part and a driving assembly which are connected, the sliding part can move in the length direction of the shell, when the sliding part moves in the direction from the first end to the second end, the driving assembly has a first state, and when the sliding part moves in the direction from the second end to the first end, the driving assembly has a second state; in the first state, the driving assembly drives the push rod to move in the direction from the first end to the second end, and in the second state, the driving assembly drives the mounting base and the puncture needle to move in the direction from the second end to the first end. The drainage tube can be well implanted into the eye.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glaucoma drainage tube implantation, in particular to a drainage tube delivery device. BACKGROUND

[0002] Glaucoma is an eye disease caused by intraocular aqueous humor circulation disorder, leading to elevated intraocular pressure, and further damaging the optic nerve. Long-term elevated intraocular pressure can compress the optic nerve, causing symptoms such as blurred vision and eye pain. Glaucoma drainage valve implantation is an effective treatment for refractory glaucoma. Glaucoma drainage tube implantation is a new minimally invasive anti-glaucoma surgery, which has the advantages of minimally invasive, safe, efficient and rapid recovery. The surgery helps aqueous humor to drain smoothly by implanting a drainage tube, thereby reducing intraocular pressure and protecting the optic nerve.

[0003] However, the diameter of the drainage tube is small, such as the thickness of a hair, and it is challenging to implant the drainage tube into the eye. Practical new type content

[0004] The present application provides a drainage tube delivery device which can implant the drainage tube into the eye well.

[0005] The present application is implemented as follows:

[0006] The present application provides a drainage tube delivery device, comprising:

[0007] The housing has opposite first and second ends;

[0008] The puncture needle is provided at the second end, and the puncture needle has an inner cavity for placing the drainage tube;

[0009] The mounting seat is provided in the housing, and the puncture needle is mounted on the mounting seat;

[0010] The push rod can move along the length direction of the inner cavity; and

[0011] The driving mechanism includes a sliding member and a driving assembly connected thereto, the sliding member can move along the length direction of the housing, and when the sliding member moves in the direction from the first end to the second end, the driving assembly has a first state, and when the sliding member moves in the direction from the second end to the first end, the driving assembly has a second state; in the first state, the driving assembly drives the push rod to move in the direction from the first end to the second end, and in the second state, the driving assembly drives the mounting seat and the puncture needle to move in the direction from the second end to the first end.

[0012] In a possible implementation, the driving assembly has a first abutting part, the mounting base has a second abutting part, the first abutting part and the second abutting part can be buckled and enable the driving assembly to drive the mounting base and the puncture needle to move in the direction from the second end to the first end.

[0013] In a possible implementation, the first abutting part has a first inclined guiding surface and a first abutting surface, the second abutting part has a second inclined guiding surface and a second abutting surface, the first inclined guiding surface and the second inclined guiding surface can abut each other when the sliding member moves in the direction from the first end to the second end, and the first abutting part can move relative to the second abutting part; the first abutting surface and the second abutting surface can abut each other when the sliding member moves in the direction from the second end to the first end, so that the first abutting part and the second abutting part are buckled.

[0014] In a possible implementation, the first abutting surface and the second abutting surface are parallel to the radial direction of the housing.

[0015] In a possible implementation, the first inclined guiding surface and the second inclined guiding surface have equal inclination angles.

[0016] In a possible implementation, the drainage tube delivery device further comprises a locking member capable of locking the mounting base; the driving assembly comprises an unlocking member connected with the sliding member, the sliding member can drive the unlocking member to move in the direction from the first end to the second end and separate the locking member from the mounting base to be unlocked when the sliding member moves in the direction from the first end to the second end.

[0017] In a possible implementation, the mounting base is provided with a clamping groove, the locking member can be clamped in the clamping groove to lock the mounting base, an inner wall of the housing has a recess arranged in position with the clamping groove, the other end of the locking member is embedded in the recess; the sliding member can drive the unlocking member to act on the locking member and drive the locking member to move from the clamping groove to the recess and separate the locking member from the mounting base when the sliding member moves in the direction from the first end to the second end.

[0018] In a possible implementation, the locking member has a third abutting part, the third abutting part has a third abutting surface; one end of the unlocking member has a fourth abutting part, the fourth abutting part has a fourth abutting surface, the fourth abutting surface can abut the third abutting surface and drive the locking member to move from the clamping groove to the recess when the sliding member moves in the direction from the first end to the second end.

[0019] In a possible implementation, the third abutting surface is an arc surface convex to the clamping groove, and the fourth abutting surface is an inclined plane.

[0020] In a possible implementation, a compression spring is fixedly installed in the recess, and the compression spring is connected with one end of the locking member.

[0021] In a possible implementation, the housing is provided with a first slot extending along the length direction of the housing; the mounting base comprises a pushing portion penetrating and exposed to the first slot, and the pushing portion is movable along the extension direction of the first slot and drives the mounting base and the puncture needle to move along the direction from the first end to the second end.

[0022] In a possible implementation, the driving assembly further comprises a pushing component and a connecting member, the pushing component is configured to be movable along the length direction of the housing for driving the push rod to move along the length direction of the inner cavity; and the pushing component and the unlocking member are connected through the connecting member.

[0023] The connecting member is rotatably connected with the housing through a first rotating shaft so as to swing, and the connecting member is provided with an elongated hole along the length direction thereof; the pushing component and the unlocking member are connected with the connecting member through a second rotating shaft and a third rotating shaft respectively, and the second rotating shaft and the third rotating shaft are movable along the extension direction of the elongated hole.

[0024] In a possible implementation, the pushing component comprises a pushing member and a sliding block, the pushing member is provided with a limiting channel, the length of the limiting channel is greater than the length of the sliding block, the sliding block is arranged in the limiting channel and is movable in the limiting channel along the length direction of the housing, the pushing member is connected with the connecting member through the second rotating shaft, and the push rod is mounted on the sliding block; the pushing member is configured to drive the sliding block to move along the length direction of the housing.

[0025] In a possible implementation, the inner wall of the housing is provided with at least one set of sliding grooves, and the pushing member and the sliding block are slidably connected with the sliding grooves.

[0026] In a possible implementation, the housing is provided with a second slot along the length direction, the sliding member is arranged outside the housing and is slidable along the second slot, the second slot is provided with a resisting block for limiting the sliding of the sliding member, and the resisting block is detachably mounted on the second slot.

[0027] The embodiments of the present application have at least the following beneficial effects:

[0028] The drainage tube delivery device of the present application drives the driving assembly through the sliding member, so that the driving assembly drives the push rod to move along the direction from the first end to the second end, thereby pushing the drainage tube placed in the inner cavity of the puncture needle out of part or all of the puncture needle; then the driving assembly is driven by the sliding member, so that the driving assembly drives the mounting base and the puncture needle to move along the direction from the second end to the first end, the puncture needle is retracted, the puncture needle can be withdrawn from the eye without taking the drainage tube out, and the drainage tube is well implanted in the eye. Since the entire implantation process of the drainage tube only needs to move the sliding member along the length direction of the housing, the operation is simple during the surgery, and it is convenient for medical staff to operate. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation to the scope. Other related drawings can also be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0030] Figure 1 Structure diagram of a drainage tube delivery device according to an embodiment of the present application;

[0031] Figure 2 Structure diagram of a drainage tube delivery device according to an embodiment of the present application from another perspective;

[0032] Figure 3 Structure diagram of a drainage tube delivery device according to an embodiment of the present application;

[0033] Figure 4 Structure diagram of a drainage tube delivery device according to an embodiment of the present application from another perspective;

[0034] Figure 5 Structure diagram of a drainage tube delivery device according to an embodiment of the present application from another perspective;

[0035] Figure 6 Structure diagram of a drainage tube delivery device according to an embodiment of the present application; Figure 5 Enlarged view of area A in FIG. 8;

[0036] Figure 7 Structure diagram of a locking member and an unlocking member according to an embodiment of the present application;

[0037] Figure 8 Structure diagram of a drainage tube delivery device according to an embodiment of the present application from another perspective;

[0038] Figure 9 Structure diagram of a locking member according to an embodiment of the present application;

[0039] Figure 10 Structure diagram of a drainage tube delivery device according to an embodiment of the present application from another perspective.

[0040] Icon: 10-drainage tube delivery device; 11-housing; 111-first end; 112-second end; 113-groove; 115-first notch; 116-sliding slot; 117-second notch; 12-puncture needle; 13-mounting seat; 131-second abutting part; 1311-second abutting surface; 1312-second inclined guiding surface; 132-clamping slot; 133-pushing part; 134-spring part; 14-push rod; 15-driving mechanism; 16-sliding piece; 17-driving assembly; 171-unlocking piece; 1711-fourth abutting part; 17111-fourth abutting surface; 172-pushing part; 1721-pushing piece; 17211-limiting channel; 1722-sliding block; 1723-first abutting part; 17231-first abutting surface; 17232-first inclined guiding surface; 173-connection piece; 174-long slot; 175-first rotating shaft; 176-second rotating shaft; 177-third rotating shaft; 18-locking piece; 181-third abutting part; 1811-third abutting surface; 182-locking block; 20-drainage tube. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms "inner", "outer" and the like indicate the positional or location relationship shown in the drawings, or the positional or location relationship commonly placed when the product of the present application is used, and 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should be noted that the "end" appearing in the words "one end", "the other end", "first end", "second end", "two ends", "upper end", "lower end" and the like is not limited to the end, end point or end face, but also includes a part extending an axial distance and / or radial distance from the end, end point or end face on the element to which the end, end point or end face belongs.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiments

[0045] The present application provides a drainage tube delivery device 10, please refer to Figures 1-5 which includes a housing 11, a puncture needle 12, a mounting seat 13, a push rod 14 and a driving mechanism 15.

[0046] Among them, the housing 11 has opposite first end 111 and second end 112, the puncture needle 12 is provided at the second end 112. The puncture needle 12 has a lumen, the lumen is used to place the drainage tube 20, the push rod 14 can move along the length direction of the lumen, so as to push the part or all of the drainage tube 20 in the lumen out of the puncture needle 12. In addition, the mounting seat 13 is provided in the housing 11, and the puncture needle 12 is mounted on the mounting seat 13. Exemplarily, the housing 11 can be formed by connecting the upper shell and the lower shell, so as to facilitate assembly.

[0047] The driving mechanism 15 comprises a connected sliding member 16 and a driving assembly 17. The sliding member 16 is arranged outside the housing 11 and is capable of moving along the length direction of the housing 11. When the sliding member 16 moves in the direction from the first end 111 to the second end 112, the driving assembly 17 is capable of having a first state. When the sliding member 16 moves in the direction from the second end 112 to the first end 111, the driving assembly 17 is capable of having a second state. Exemplarily, the sliding member 16 is an arc-shaped block and is slidably connected with the housing 11. In other embodiments, the sliding member 16 can also have other shapes, such as a square block, a circular block, etc. The specific shape of the sliding member 16 is not limited in the present application.

[0048] The second slot 117 is provided with a stop block (not shown in the figure) to limit the sliding of the sliding member 16. The stop block is detachably mounted on the second slot 117. Before use, the stop block is kept mounted on the second slot 117. When it is needed to operate the sliding member 16 to slide along the second slot 117, the stop block is removed from the second slot 117. The existence of the stop block can avoid the misoperation of the sliding member 16.

[0049] In the first state, the driving assembly 17 drives the push rod 14 to move in the direction from the first end 111 to the second end 112 (refer to Figure 3 and Figure 5 ). In the second state, the driving assembly 17 drives the mounting seat 13 and the puncture needle 12 to move in the direction from the second end 112 to the first end 111 (refer to Figure 5 and Figure 8 ).

[0050] The drainage tube delivery device 10 of the present application is used as follows. First, the puncture needle 12 is stabbed into the target position in the eye. Then, the sliding member 16 is pushed to drive the driving assembly 17, so that the driving assembly 17 drives the push rod 14 to move in the direction from the first end 111 to the second end 112 (the direction indicated by arrow A in Figure 1 ). Thus, the drainage tube 20 placed in the inner cavity of the puncture needle 12 is pushed out partially or entirely to the outside of the puncture needle 12. Then, the sliding member 16 drives the driving assembly 17, so that the driving assembly 17 drives the mounting seat 13 and the puncture needle 12 to move in the direction from the second end 112 to the first end 111 (the direction indicated by arrow B in Figure 1 ). The puncture needle 12 is retracted, so that the puncture needle 12 can be withdrawn from the eye without taking out the drainage tube 20, thereby implanting the drainage tube 20 in the eye well. Since the entire implantation process of the drainage tube 20 only needs to operate the sliding member 16 to move along the length direction of the housing 11, the operation is simple during the surgery, which is convenient for medical staff to operate.

[0051] In addition, the drainage tube delivery device 10 further comprises a sleeve (not shown in the figure) which is detachably sleeved on the puncture needle 12, so as to prevent the puncture needle 12 from hurting the operator before use, and also to prevent the puncture needle 12 from being contaminated. When the drainage tube implantation operation is needed, the sleeve can be removed.

[0052] In an embodiment, the driving assembly 17 comprises a pushing member 172 which is configured to move along the length direction of the housing 11 for pushing the push rod 14 to move along the length direction of the inner cavity. Please refer to Figure 5 and Figure 6 The pushing member 172 has a first abutting portion 1723, and the mounting seat 13 has a second abutting portion 131. The first abutting portion 1723 and the second abutting portion 131 are capable of being buckled and enabling the driving assembly 17 to drive the mounting seat 13 and the puncture needle 12 to move along the direction from the second end 112 to the first end 111. When the sliding member 16 moves along the length direction of the housing 11 and the first abutting portion 1723 and the second abutting portion 131 are buckled, the mounting seat 13 is connected with the pushing member 172, so that when the sliding member 16 moves along the direction from the second end 112 to the first end 111, the pushing member 172 of the driving assembly 17 can drive the mounting seat 13 and the puncture needle 12 to also move along the direction from the second end 112 to the first end 111, so that the puncture needle 12 is retracted.

[0053] The first abutting portion 1723 has a first inclined guide surface 17232 and a first abutting surface 17231, and the second abutting portion 131 has a second inclined guide surface 1312 and a second abutting surface 1311. When the sliding member 16 moves in the direction from the first end 111 to the second end 112, the first inclined guide surface 17232 and the second inclined guide surface 1312 can abut against each other, and the first abutting portion 1723 can move relative to the second abutting portion 131. When the sliding member 16 moves in the direction from the second end 112 to the first end 111, the first abutting surface 17231 and the second abutting surface 1311 can abut against each other, so that the first abutting portion 1723 and the second abutting portion 131 are engaged. For example, the first abutting portion 1723 and the second abutting portion 131 are both triangular prisms. The first abutting surface 17231 and the first inclined guide surface 17232 are connected, and the second abutting surface 1311 and the second inclined guide surface 1312 are connected. In addition, the first abutting surface 17231 and the second abutting surface 1311 are both parallel to the radial direction of the housing 11, and the inclination angles of the first inclined guide surface 17232 and the second inclined guide surface 1312 are equal. The second abutting portion 131 is connected to the main body of the mounting seat 13 through the elastic sheet portion 134. When the sliding member 16 moves in the direction from the first end 111 to the second end 112, the first inclined guide surface 17232 and the second inclined guide surface 1312 abut against each other, and the second abutting portion 131 is abutted and moves together with the elastic sheet portion 134 in the direction close to the inner wall of the housing 11. When the first inclined guide surface 17232 and the second inclined guide surface 1312 are disengaged, the second abutting portion 131 returns to the original position. When the sliding member 16 moves in the direction from the second end 112 to the first end 111, the first abutting surface 17231 and the second abutting surface 1311 abut against each other, so that the first abutting portion 1723 and the second abutting portion 131 are engaged.

[0054] It should be noted that the first abutting portion 1723 and the second abutting portion 131 can also have other shapes, for example, trapezoidal bodies. The first abutting surface 17231 and the first inclined guide surface 17232 are connected through a first connecting surface, and the second abutting surface 1311 and the second inclined guide surface 1312 are connected through a second connecting surface. For example, the first connecting surface and the second connecting surface are both parallel to the axis of the housing 11.

[0055] Further, the driving assembly 17 further comprises a connecting member 173 and an unlocking member 171. The unlocking member 171 is connected to the sliding member 16, and the pushing member 172 and the unlocking member 171 are connected through the connecting member 173. For example, the pushing member 172 comprises a pushing piece 1721 and a sliding block 1722. The push rod 14 is installed on the sliding block 1722, and the pushing piece 1721 is configured to push the sliding block 1722 to move in the length direction of the housing 11.

[0056] Exemplarily, the pusher 1721 is provided with a limiting channel 17211, the length of the limiting channel 17211 is greater than the length of the sliding block 1722, the sliding block 1722 is arranged in the limiting channel 17211 and can move along the length direction of the shell 11, and the pusher 1721 moves along the length direction of the shell 11, and the sliding block 1722 is also pushed to move along the length direction of the shell 11. When the pusher 1721 moves along the length direction of the shell 11 from the first end 111 to the second end 112, the sliding block 1722 abuts against the inner wall of the limiting channel 17211 close to the first end 111 in the limiting channel 17211, and moves along the length direction of the shell 11 from the first end 111 to the second end 112 together with the pusher 1721 (refer to Figure 3 and Figure 5 ); when the pusher 1721 moves along the length direction of the shell 11 from the second end 112 to the first end 111 together with the sliding member 16, the puncture needle 12 is withdrawn, the sliding block 1722 keeps still for a period of time, and the push rod 14 also keeps still for a period of time (refer to Figure 8 ), and when the sliding block 1722 abuts against the inner wall of the limiting channel 17211 close to the second end 112 in the limiting channel 17211, the sliding block 1722 and the push rod 14 move along the length direction of the shell 11 from the second end 112 to the first end 111 together with the sliding member 16 (refer to Figure 10 ). When the puncture needle 12 is withdrawn and the push rod 14 keeps still, the drainage tube 20 can be completely pushed out of the puncture needle 12.

[0057] Exemplarily, the inner wall of the shell 11 is provided with at least one set of sliding grooves 116, and the pusher 1721 and the sliding block 1722 are slidably connected with the sliding grooves 116. It can be understood that when one set of sliding grooves 116 is arranged, the pusher 1721 and the sliding block 1722 are slidably connected with the same set of sliding grooves 116; when two sets of sliding grooves 116 are arranged, the pusher 1721 and the sliding block 1722 are slidably connected with different sets of sliding grooves 116. Each set of sliding grooves can include one sliding groove 116 or two oppositely arranged sliding grooves 116.

[0058] In addition, the connecting member 173 is used to connect the unlocking member 171 and the pushing member 1721 of the pushing component 172, so that when the pushing component 172 moves along the length direction of the shell 11, the unlocking member 171 also moves along the length direction of the shell 11. The structure of the connecting member 173 is various, in an embodiment, the connecting member 173 is rotatably connected with the shell 11 through a first rotating shaft 175, so that the connecting member 173 can swing around the first rotating shaft 175. The connecting member 173 is provided with a long hole 174 along its length direction, the pushing member 1721 of the pushing component 172 is connected with the connecting member 173 through a second rotating shaft 176, the unlocking member 171 is connected with the connecting member 173 and the sliding member 16 through a third rotating shaft 177, the second rotating shaft 176 and the third rotating shaft 177 are both arranged in the long hole 174 and can move along the extension direction of the long hole 174. The push rod 14 is installed on the sliding block 1722, and the pushing member 1721 is configured to push the sliding block 1722 to move along the length direction of the shell 11.

[0059] When the sliding member 16 moves along the length direction of the shell 11, the unlocking member 171 and the pushing member 1721 are simultaneously driven to move along the length direction of the shell 11, and the connecting member 173 swings around the first rotating shaft 175. It should be noted that in other embodiments, the sliding member 16 can be connected with the pushing member 1721, when the sliding member 16 moves along the length direction of the shell 11, the pushing member 1721 and the unlocking member 171 can also be driven to move along the length direction of the shell 11, and the connecting member 173 swings around the first rotating shaft 175.

[0060] In addition, the drainage tube delivery device 10 further comprises a locking member 18, which can lock the mounting seat 13 to avoid the mounting seat 13 from shaking. When the sliding member 16 moves along the direction from the first end 111 to the second end 112, the unlocking member 171 can be driven to move along the direction from the first end 111 to the second end 112 and separate the locking member 18 from the mounting seat 13 to be unlocked (see Figure 3 and Figure 5 ). Before operation, the locking member 18 keeps the mounting seat 13 locked, after the puncture needle 12 is inserted into the target position in the eye, the sliding member 16 is operated to move along the direction from the first end 111 to the second end 112, the sliding member 16 drives the unlocking member 171 to also move along the direction from the first end 111 to the second end 112, and the unlocking member 171 acts on the locking member 18 to separate the locking member 18 from the mounting seat 13, and then the sliding member 16 is operated to move along the direction from the second end 112 to the first end 111, so that the mounting seat 13 can be withdrawn without being limited by the locking member 18.

[0061] Exemplarily, the mounting seat 13 is provided with a clamping groove 132, one end of the locking piece 18 can be clamped in the clamping groove 132 to lock the mounting seat 13, and the inner wall of the shell 11 has a recess 113 which is arranged in position with the clamping groove 132, and the other end of the locking piece 18 is embedded in the recess 113. Before operation, one end of the locking piece 18 is clamped in the clamping groove 132, and the other end of the locking piece 18 is arranged in the recess 113. When the sliding piece 16 moves in the direction from the first end 111 to the second end 112, the unlocking piece 171 can act on the locking piece 18, and the locking piece 18 moves from the clamping groove 132 to the recess 113, and the locking piece 18 is separated from the mounting seat 13. Wherein, the unlocking piece 171 acts on the locking piece 18, the locking piece 18 moves from the clamping groove 132 to the recess 113, and the locking piece 18 is separated from the mounting seat 13 by the locking piece 18 being separated from the clamping groove 132, so as to realize unlocking.

[0062] In an embodiment, the locking piece 18 has a third abutting portion 181, and the third abutting portion 181 has a third abutting surface 1811 (refer to Figure 7 ). One end of the unlocking piece 171 has a fourth abutting portion 1711, and the fourth abutting portion 1711 has a fourth abutting surface 17111. When the sliding piece 16 moves in the direction from the first end 111 to the second end 112, the fourth abutting surface 17111 can abut against the third abutting surface 1811 and make the locking piece 18 move from the clamping groove 132 to the recess 113. Exemplarily, the third abutting surface 1811 is an arc surface which is convex to the clamping groove 132, and the fourth abutting surface 17111 is an inclined plane. When the sliding piece 16 moves in the direction from the first end 111 to the second end 112, the fourth abutting surface 17111 translates in the direction from the first end 111 to the second end 112, and when the inclined plane moves against the arc third abutting surface 1811, the locking piece 18 moves from the clamping groove 132 to the recess 113.

[0063] Exemplarily, the locking piece 18 includes a locking block 182 and the above-mentioned third abutting portion 181 (refer to Figure 9 ). The locking block 182 and the third abutting portion 181 are an integral structure, and it can be understood that the locking block 182 can also be separately arranged and connected together with the third abutting portion 181. Wherein, one end of the third abutting portion 181 close to the recess 113 is flush with the locking block 182, and the other end of the third abutting portion 181 close to the clamping groove 132 is lower than the height of the locking block 182 to form a step, and when the locking piece 18 moves from the clamping groove 132 to the recess 113 and is separated from the mounting seat 13, the fourth abutting portion 1711 moves beyond the third abutting portion 181. In addition, the third abutting portion 181 can also be arranged to have a channel, one end of the third abutting portion 181 close to the recess 113 is flush with the locking block 182, and the other end of the third abutting portion 181 close to the clamping groove 132 is also flush with the locking block 182, and the third abutting surface 1811 is formed on the inner wall of the channel.

[0064] Further, a compression spring is installed in the groove 113 and connected with one end of the locking piece 18. The compression spring forms a certain extrusion force on the locking piece 18, and when the locking piece 18 is clamped in the groove 113 of the shell 11, the locking piece 18 can better lock the mounting seat 13.

[0065] In addition, the shell 11 is also provided with a first notch 115 extending along the length direction of the shell 11. The mounting seat 13 includes a pushing part 133 connected with the second abutting part 131, and the pushing part 133 is arranged to extend through and expose to the first notch 115. The pushing part 133 can move along the extension direction of the first notch 115 and make the mounting seat 13 and the puncture needle 12 move in the direction from the first end 111 to the second end 112, and the locking piece 18 returns to the clamping groove 132 to re-lock the mounting seat 13.

[0066] By operating the pushing part 133 to move along the length direction of the first notch 115, the mounting seat 13 and the puncture needle 12 can be moved in the direction from the first end 111 to the second end 112, that is, the retracted puncture needle 12 can be re-advanced. When the mounting seat 13 moves to the position corresponding to the clamping groove 132 and the locking piece 18, the locking piece 18 will be clamped in the clamping groove 132 under the action of the compression spring to lock the mounting seat 13, thereby being repeatedly used.

[0067] In summary, the working principle of the drainage tube delivery device 10 of the present application is as follows:

[0068] In use, the puncture needle 12 is first inserted into the target position in the eye, and then the sliding part 16 is operated to move in the direction from the first end 111 to the second end 112, so that the unlocking part 171 and the pushing part 172 are also moved in the direction from the first end 111 to the second end 112, and the pushing part 172 drives the push rod 14 to move in the length direction of the puncture needle 12, so that the drainage tube 20 placed in the inner cavity of the puncture needle 12 is pushed out at least partially (partially or entirely) to the outside of the puncture needle 12; the first abutting part 1723 of the pushing part 172 acts on the second abutting part 131 of the mounting seat 13, and the first inclined guide surface 17232 of the first abutting part 1723 and the second inclined guide surface 1312 of the second abutting part 131 abut each other until the first abutting part 1723 and the second abutting part 131 are misaligned; the fourth abutting part 1711 of the unlocking part 171 acts on the third abutting part 181 of the locking piece 18, and the fourth abutting surface 17111 and the third abutting surface 1811 abut each other, so that the locking piece 18 moves from the clamping groove 132 of the mounting seat 13 to the groove 113 of the shell 11, and the locking piece 18 is separated from the mounting seat 13.

[0069] Then the sliding member 16 is operated to move in the direction from the second end 112 to the first end 111, the pushing member 1721 drives the mounting seat 13 and the puncture needle 12 on the mounting seat 13 to move in the direction from the second end 112 to the first end 111, and the puncture needle 12 is retracted. When the pushing member 1721 moves to the position where the sliding block 1722 abuts against the inner wall of the limiting channel 17211, the pushing member 1721 drives the mounting seat 13, the puncture needle 12 on the mounting seat 13 and the push rod 14 to continue to move in the direction from the second end 112 to the first end 111, so as to retract the puncture needle 12 and the push rod 14, the puncture needle 12 is withdrawn from the eye without taking out the drainage tube 20, and then the drainage tube 20 is implanted in the eye. Since the whole implantation process of the drainage tube 20 only needs to operate the sliding member 16 to move in the length direction of the shell 11, the operation is simple during the surgery, and it is convenient for the medical staff to operate.

[0070] The preferred embodiments of the present application have been described above with reference to the drawings, but the present application is not limited to the above examples. It will be apparent to those skilled in the art that various modifications and changes can be made to the present application without departing from the spirit and scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drainage tube delivery device, characterized by, The catheter delivery device comprises: a housing having opposite first and second ends; a puncture needle arranged at the second end, the puncture needle having a lumen for placing a catheter tube; a mounting seat arranged in the housing, the puncture needle being mounted on the mounting seat; a push rod capable of moving along the length direction of the lumen; and a driving mechanism comprising a slide and a driving assembly connected to each other, the slide being capable of moving along the length direction of the housing, and the slide being capable of bringing the driving assembly into a first state when moving along the direction from the first end to the second end, and bringing the driving assembly into a second state when moving along the direction from the second end to the first end; in the first state, the driving assembly drives the push rod to move along the direction from the first end to the second end; in the second state, the driving assembly drives the mounting seat and the puncture needle to move along the direction from the second end to the first end. The driving assembly has a first abutting portion, the mounting seat has a second abutting portion, the first abutting portion and the second abutting portion are capable of being engaged to enable the driving assembly to drive the mounting seat and the puncture needle to move along the direction from the second end to the first end.

2. The drain delivery device of claim 1, wherein, The first abutting portion has a first inclined guide surface and a first abutting surface, the second abutting portion has a second inclined guide surface and a second abutting surface, the first inclined guide surface and the second inclined guide surface are capable of abutting against each other when the slide moves along the direction from the first end to the second end, and the first abutting portion is capable of moving relative to the second abutting portion; the first abutting surface and the second abutting surface are capable of abutting against each other to enable the first abutting portion and the second abutting portion to be engaged when the slide moves along the direction from the second end to the first end.

3. The drain delivery device of claim 2, wherein, The catheter delivery device further comprises a locking member capable of locking the mounting seat; the driving assembly comprises an unlocking member connected to the slide, the slide is capable of driving the unlocking member to move along the direction from the first end to the second end and separate the locking member from the mounting seat to be unlocked when moving along the direction from the first end to the second end.

4. The drainage tube delivery device of any of claims 1-3, wherein, The mounting seat is provided with a clamping groove, one end of the locking member is capable of being clamped in the clamping groove to lock the mounting seat, an inner wall of the housing has a recess arranged in position with the clamping groove, the other end of the locking member is embedded in the recess; the slide is capable of driving the unlocking member to act on the locking member and enabling the locking member to move from the clamping groove to the recess and separate the locking member from the mounting seat when moving along the direction from the first end to the second end.

5. The drain delivery device of claim 4, wherein, ​ 6. The drain delivery device of claim 5, wherein, The locking member has a third abutting part with a third abutting surface; one end of the unlocking member has a fourth abutting part with a fourth abutting surface, when the sliding member moves along the direction from the first end to the second end, the fourth abutting surface can abut against the third abutting surface and make the locking member move from the clamping groove to the recess.

7. The drain delivery device of claim 6, wherein, The third abutting surface is a convex arc surface facing the clamping groove, and the fourth abutting surface is an inclined plane.

8. The drain delivery device of claim 4, wherein, The driving assembly comprises a pushing part and a connecting member, the pushing part is configured to move along the length direction of the shell for pushing the push rod to move along the length direction of the inner cavity; the pushing part and the unlocking member are connected by the connecting member.

9. The drain delivery device of claim 8, wherein, The connecting member is rotatably connected with the shell by a first rotating shaft, so that the connecting member can swing, the connecting member is provided with a long hole along the length direction thereof, the pushing part and the unlocking member are connected with the connecting member by a second rotating shaft and a third rotating shaft respectively, and the second rotating shaft and the third rotating shaft can move along the extension direction of the long hole.

10. The drain delivery device of claim 9, wherein, The pushing part comprises a pushing member and a sliding block, the pushing member is provided with a limiting channel, the length of the limiting channel is greater than the length of the sliding block, the sliding block is arranged in the limiting channel and can move along the length direction of the shell in the limiting channel, the pushing member is connected with the connecting member by the second rotating shaft, and the push rod is installed on the sliding block; the pushing member is configured to push the sliding block to move along the length direction of the shell.

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