Medical implant device

Abstract

The present invention relates to the technical field of medical devices, and discloses a medical implant device. The medical implant device comprises a handle assembly, an implant assembly and an unfolding assembly, wherein the side wall of the handle assembly is provided with a slide groove extending in the length direction; the implant assembly comprises an implant rod, the end of the handle assembly is provided with a connecting hole, the first end of the implant rod is connected to the connecting hole, and the second end of the implant rod is used to install a patch; the unfolding assembly comprises an inner core rod, a flexible inner core, a rolling wheel and a push button, the push button is provided with a driving part and a sliding part connected to each other, the sliding part is provided with a slide groove and connected to the first end of the inner core rod, and the sliding part is slidably connected to the slide groove; the implant rod is provided with a first guide hole, the inner core rod is slidably provided in the first guide hole, and the rolling wheel is connected to the second end of the inner core rod through the flexible inner core; the driving part of the push button is pushed, and the rolling wheel moves in a direction away from the handle assembly, so that the rolling wheel rolls the patch. The present invention is simple to operate and prevents secondary damage to the soft tissue around the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a medical implant device. Background Art

[0002] Rotator cuff joint repair usually uses a patch sutured between the greater tuberosity and the glenoid to achieve the connection between the greater tuberosity and the glenoid, thereby restoring the structure of the upper joint capsule and achieving the effect of pressing down the humeral head. In existing surgeries, the patch and the implant device need to be pre-assembled before the operation. During the operation, the patch needs to be delivered in a folded state on the implant device. When the patch reaches the suture of the rotator cuff, the implant device needs to be flipped over to unfold the folded patch. However, the subcutaneous space of the shoulder joint is limited, and when the implant device is flipped over, secondary damage will be caused to the surrounding tissues in the joint cavity.

[0003] Based on this, there is an urgent need for a medical implant device to solve the above-mentioned problems. Summary of the invention

[0004] Based on the above, the purpose of the present invention is to provide a medical implant device to achieve patch deployment, which is simple to operate, reduces the difficulty of surgery, and has a good patch deployment effect, preventing secondary damage to the soft tissue around the surgery.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A medical implant device, comprising:

[0007] A handle assembly, wherein a side wall of the handle assembly is provided with a slide groove extending along the length direction;

[0008] An implant assembly, comprising an implant rod, the end of the handle assembly is provided with a connecting hole, the first end of the implant rod is connected to the connecting hole, and the second end of the implant rod is used for mounting a patch;

[0009] An unfolding assembly comprises an inner core rod, a flexible inner core, a rolling wheel and a push button, wherein the push button is provided with a driving portion and a sliding portion which are connected to each other, the sliding portion passes through the sliding groove and is connected to the first end of the inner core rod, and the sliding portion is slidably connected to the sliding groove; the implant rod is provided with a first guide hole, the inner core rod is slidably passed through the first guide hole, and the rolling wheel is connected to the second end of the inner core rod through the flexible inner core; the driving portion of the push button is pushed, and the rolling wheel moves in a direction away from the handle assembly so that the rolling wheel rolls the patch.

[0010] As a preferred technical solution for a medical implant device, the handle assembly includes a rotating shell and a fixed shell, the rotating shell is rotatably connected to the fixed shell, the slide groove is arranged on the side wall of the rotating shell, and the connecting hole is arranged at one end of the fixed shell away from the rotating shell.

[0011] As a preferred technical solution of a medical implant device, the implant assembly further comprises an elastic member, wherein the elastic member is installed in the handle assembly, and the elastic member is used to apply an elastic force to the inner core rod in a direction away from the patch.

[0012] As a preferred technical solution for a medical implant device, the handle assembly also includes a damping spring component, an annular serration is provided at one end of the rotating shell close to the fixed shell, the damping spring component is installed in the fixed shell, the damping spring component is provided with an elastic arm, and a convex tooth matching the annular serration is provided at the end of the elastic arm, the convex tooth is meshingly connected to the annular serration, and the elastic arm can be deformed when the rotating shell rotates.

[0013] As a preferred technical solution of a medical implant device, the side wall of the elastic arm is provided with a deformation groove, and the deformation groove can generate deformation.

[0014] As a preferred technical solution for a medical implant device, the side wall of the second end of the implant rod is provided with an opening, the rolling wheel can move at the opening, and the portion of the implant rod provided with the opening and the side wall of the implant rod not provided with the opening are transitioned through an arc.

[0015] As a preferred technical solution for a medical implant device, two pre-drilled rods are installed at intervals on the second end of the implant rod, and the pre-drilled rods can be installed with bone anchors, and the patch is installed on the bone anchors.

[0016] As a preferred technical solution for a medical implant device, a limiting groove is provided on the side wall of the implant rod extending into the connecting hole, and a limiting boss is provided on the inner wall of the connecting hole, and the limiting boss is embedded in the limiting groove.

[0017] As a preferred technical solution for a medical implant device, a first groove is provided in the middle of a side of the driving portion of the push button away from the sliding portion.

[0018] As a preferred technical solution for a medical implant device, the rolling wheel is in the shape of a waist drum, and the rolling wheel is provided with a through hole for the flexible inner core to pass through.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a medical implant device. Before the operation, the patch is first installed on the second end of the implant rod, and then the implant rod is extended to the surgical position. At this time, the driving part of the push button is pushed, and the push button drives the rolling wheel to move through the inner core rod and the flexible inner core, and the rolling wheel moves in the direction away from the handle assembly. Since the flexible inner core is flexible, the flexible inner core can produce deformation along the radial direction of the inner core rod. Therefore, after the rolling wheel is crimped to the patch, the push button is continued to be pushed to make the rolling wheel roll on the surface of the patch to achieve the deployment of the patch. Furthermore, the patch is deployed under the rolling of the rolling wheel, so that the patch and the greater tuberosity or the patch and the glenoid cavity are attached and fixed more stably by the pressure of the rolling wheel, so that the patch is smoothly deployed and attached to the surface of the rotator cuff. The present invention does not need to flip the implant device to achieve the deployment of the patch, and the operation is simple, the difficulty of the operation is reduced, and the deployment effect of the patch is good, which prevents secondary damage to the soft tissue around the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 is a schematic structural diagram of a medical implant device provided in a specific embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A magnified view at point A;

[0024] Figure 3 is a structural exploded diagram of a medical implant device provided in a specific embodiment of the present invention;

[0025] Figure 4 is a partial structural schematic diagram of a medical implant device provided in a specific embodiment of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a damping elastic member provided in a specific embodiment of the present invention.

[0027] The following are marked in the figure:

[0028] 100. Bone anchor;

[0029] 1. handle assembly; 11. rotating housing; 111. slide groove; 112. rotating part; 113. connecting part; 1131. annular serration; 12. fixed housing; 121. connecting hole; 122. limiting boss; 123. adapter groove; 124. upper half; 125. lower half; 13. damping elastic part; 131. elastic arm; 1311. convex tooth; 1312. deformation groove; 132. fixed boss; 133. notch;

[0030] 2. implantation assembly; 21. implantation rod; 211. opening; 212. limiting groove; 22. pre-drilling rod; 23. elastic member;

[0031] 3. unfolding assembly; 31. inner core rod; 311. connecting block; 32. flexible inner core; 33. rolling wheel; 34. push button; 341. driving part; 3411. first groove; 342. sliding part. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a medical implant device, which includes a handle assembly 1, an implant assembly 2 and an expansion assembly 3. Specifically, the side wall of the handle assembly 1 is provided with a slide groove 111 extending along the length direction; the implant assembly 2 includes an implant rod 21, and the end of the handle assembly 1 is provided with a connecting hole 121, the first end of the implant rod 21 is connected to the connecting hole 121, and the second end of the implant rod 21 is used to install a patch; the expansion assembly 3 includes an inner core rod 31, a flexible inner core 32, a rolling wheel 33 and a push button 34, The push button 34 is provided with a driving part 341 and a sliding part 342 which are connected to each other. The sliding part 342 passes through the sliding groove 111 and is connected to the first end of the inner core rod 31, and the sliding part 342 is slidably connected to the sliding groove 111; the implant rod 21 is provided with a first guide hole, the inner core rod 31 is slidably passed through the first guide hole, and the rolling wheel 33 is connected to the second end of the inner core rod 31 through the flexible inner core 32; the driving part 341 of the push button 34 is pushed, and the rolling wheel 33 moves in a direction away from the handle assembly 1, so that the rolling wheel 33 rolls the patch.

[0037] Before the operation, the patch is first installed on the second end of the implant rod 21, and then the implant rod 21 is extended to the surgical position. At this time, the driving part 341 of the push button 34 is pushed, and the push button 34 drives the rolling wheel 33 to move through the inner core rod 31 and the flexible inner core 32, and the rolling wheel 33 moves in the direction away from the handle assembly 1. Since the flexible inner core 32 is flexible, the flexible inner core 32 can produce deformation along the radial direction of the inner core rod 31. Therefore, after the rolling wheel 33 is crimped to the patch, the push button 34 is continued to be pushed to make the rolling wheel 33 roll on the surface of the patch to achieve the deployment of the patch. Furthermore, the patch is deployed under the rolling of the rolling wheel 33, so that the pressure of the rolling wheel 33 is used between the patch and the greater tuberosity or the patch and the glenoid cavity to achieve more stable attachment and fixation, so that the patch is smoothly deployed and attached to the rotator cuff surface. This embodiment does not need to flip the medical implant device to achieve the deployment of the patch, which is simple to operate, reduces the difficulty of the operation, and has a good deployment effect of the patch, preventing secondary damage to the soft tissue around the operation.

[0038] Preferably, if Figure 3 and Figure 4As shown, the handle assembly 1 includes a rotating housing 11 and a fixed housing 12, the rotating housing 11 is rotatably connected to the fixed housing 12, the slide groove 111 is arranged on the side wall of the rotating housing 11, and the connecting hole 121 is arranged on the end of the fixed housing 12 away from the rotating housing 11. Since the push button 34 is located in the slide groove 111 of the rotating housing 11, when the rotating housing 11 rotates left and right relative to the fixed housing 12, it can drive the push button 34, the inner core rod 31, the flexible inner core 32 and the rolling wheel 33 to rotate at an angle, so that the patch can be rolled and unfolded at multiple angles, so that the contact area between the patch and the greater tuberosity and the patch and the glenoid cavity is larger, and the flatness of the unfolded patch is guaranteed.

[0039] In this embodiment, Figure 3 As shown, the cross-section of the push button 34 is a T-shaped structure, and the lateral structure of the upper part of the T is a driving part 341 for pushing. A first groove 3411 is provided in the middle of the side of the driving part 341 of the push button 34 away from the sliding part 342. The first groove 3411 is convenient for the doctor's finger to push. The structure conforms to ergonomics, and the specific shape can be designed according to needs. In this embodiment, the driving part 341 is a shuttle-shaped structure.

[0040] In this embodiment, the rotating housing 11 includes a rotating portion 112 and a connecting portion 113 integrally formed, both of which are cylindrical structures, and the outer diameter of the connecting portion 113 is smaller than the outer diameter of the rotating portion 112. The rotating portion 112 and the connecting portion 113 are coaxially arranged, and a slide groove 111 is provided on the surface of the rotating housing 11, and the slide groove 111 allows the push button 34 to reciprocate therein, so the groove width of the slide groove 111 matches the size of the middle section of the connecting portion 113 of the push button 34. The fixed housing 12 is a cylindrical structure, and its outer diameter is the same as the outer diameter of the rotating portion 112 of the rotating housing 11.

[0041] Preferably, if Figure 3 and Figure 4 As shown, the implant assembly 2 further includes an elastic member 23, which is installed in the handle assembly 1. The elastic member 23 is used to apply an elastic force in a direction away from the patch to the inner core rod 31. After pushing the push button 34 to allow the rolling wheel 33 to roll the patch, the push button 34 is released, and the push button 34 moves away from the patch under the elastic force of the elastic member 23, and the push button automatically returns to the initial position, thereby improving the convenience of operation.

[0042] In this embodiment, the first end of the inner core rod 31 is provided with a connecting block 311, and the sliding portion 342 of the push button 34 is plugged and connected with the connecting block 311. For a more stable connection, a pin or a screw can be used for fixing. The elastic member 23 is a coil spring, and the fixed housing 12 is provided with a transfer groove 123. The connecting portion 113 is rotatably connected to the transfer groove 123. The transfer groove 123 can limit the radial movement of the rotating housing 11. The coil spring is sleeved on the inner core rod 31, and one end abuts against the side of the connecting block 311 close to the patch, and the other end abuts against the side wall of the transfer groove 123.

[0043] In this embodiment, the fixed housing 12 is divided into an upper half 124 and a lower half 125 along its axial direction. After the upper half 124 and the lower half 125 are connected, a connecting hole 121 and a transfer groove 123 are formed therebetween.

[0044] Preferably, if Figure 3-Figure 5 As shown, the handle assembly 1 also includes a damping spring 13. An annular serration 1131 is provided at one end of the rotating shell 11 close to the fixed shell 12. The annular serration 1131 is provided at the connecting portion 113. The damping spring 13 is installed in the fixed shell 12. The damping spring 13 is provided with an elastic arm 131. A convex tooth 1311 cooperating with the annular serration 1131 is provided at the end of the elastic arm 131. The convex tooth 1311 is meshedly connected to the annular serration 1131. When the rotating shell 11 rotates, the elastic arm 131 can be deformed. In this embodiment, the damping spring 13 is installed on the side wall of the adapter groove 123, and the convex tooth 1311 of the damping spring 13 is interference fit with the tooth profile of the annular serration 1131. When the rotating shell 11 rotates relative to the fixed shell 12, the elastic arm 131 produces a certain deformation, and the convex tooth 1311 disengages from the tooth groove of the previous annular serration 1131 and meshes with the next tooth groove of the annular serration 1131 again. When the rotating shell 11 is rotated, there is a certain damping feeling and prompt sound, which is convenient for the operator to understand the rotation state of the rotating shell 11.

[0045] In this embodiment, the damping spring 13 is a quarter of an axial arc structure, and can be divided into two parts along the axial section of the arc, one part is a fixed boss 132, and the other part is an elastic arm 131, the elastic arm 131 is connected to the fixed boss 132, the convex tooth 1311 of the elastic arm 131 is higher than the fixed boss 132, and a notch 133 is provided between one end of the elastic arm 131 provided with the convex tooth 1311 and the fixed boss 132, and the elastic arm 131 can move in the notch 133 to ensure that the convex tooth 1311 has a deformation space. Preferably, the side wall of the elastic arm 131 is provided with a deformation groove 1312, and the deformation groove 1312 can produce deformation, and the deformation groove 1312 can reduce the elastic force value to prevent stress from being concentrated on the connection between the elastic arm 131 and the fixed boss 132. In this embodiment, the side wall of the deformation groove 1312 can be an arc surface.

[0046] Furthermore, if Figure 3 and Figure 4 As shown, the side wall of the implant rod 21 extending into the connection hole 121 is provided with a limiting groove 212, and the inner wall of the connection hole 121 is provided with a limiting boss 122, and the limiting boss 122 is embedded in the limiting groove 212. The limiting boss 122 and the limiting groove 212 are interference fit, and the limiting boss 122 can limit the rotation of the implant rod 21 relative to the connection hole 121, and limit the movement of the implant rod 21 along the length direction, thereby improving the connection stability of the implant rod 21.

[0047] Furthermore, if Figure 2 and Figure 3 As shown, in this embodiment, the side wall of the second end of the implant rod 21 is provided with an opening 211, and the second end of the implant rod 21 forms a semi-open structure. The rolling wheel 33 can move at the opening 211. The portion of the implant rod 21 provided with the opening 211 and the side wall of the implant rod 21 not provided with the opening 211 are transitioned through an arc, so as to facilitate the movement of the implant rod 21 in the human body.

[0048] In this embodiment, the rolling wheel 33 is in the shape of a waist drum, and is provided with a through hole for the flexible inner core 32 to pass through. The flexible inner core 32 may be a steel wire rope structure with a certain rigidity.

[0049] Two pre-drilled rods 22 are installed at intervals at the second end of the implant rod 21. The pre-drilled rods 22 can be installed with bone anchors 100, and the patch is installed on the bone anchors 100. During assembly, the pre-drilled rod 22 at the second end of the implant rod 21 is installed with the bone anchor 100, and the bone anchor 100 then passes through the patch. Because the patch is a mesh structure, the bone anchor 100 passes through the mesh hole of the patch. The contour surface of the bone anchor 100 is designed with barbed bosses. After the bone anchor 100 passes through the patch, the patch will not slip off. In this embodiment, the second end of the implant rod 21 forms a double-fork design, which can carry both the bone anchor 100 and the patch. Compared with the head end of the implant rod of the existing patch implantation device, which can only carry a single implant, it can achieve the simultaneous delivery of the patch and the bone anchor 100, simplifying the surgical steps.

[0050] When the medical implant device is used, the bone anchor 100 and the patch are first installed on the two pre-drilled rods 22 at the second end of the implant rod 21, and then the implant rod 21 is extended to the preset position, and the push button 34 is pushed to make the rolling wheel 33 roll the patch, and the rotating housing 11 is rotated to make the rolling wheel 33 roll the patch at multiple angles to ensure that the patch is smoothly unfolded at the preset position. In this embodiment, by improving the double-fork structure at the second end of the implant rod 21 and the patch rolling unfolding structure, the simultaneous delivery of the patch and the bone anchor 100 and the full unfolding of the patch are achieved, thereby simplifying the surgical operation, and the medical implant device can be directly used for surgery. In addition, the implantation process is convenient, and other actions such as flipping are no longer required to complete the patch attachment, and no secondary damage to the surrounding soft tissue will be caused.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A medical implant device, characterized in that: include: A handle assembly (1), wherein a side wall of the handle assembly (1) is provided with a slide groove (111) extending along the length direction; An implant assembly (2) comprising an implant rod (21), the end of the handle assembly (1) being provided with a connection hole (121), the first end of the implant rod (21) being connected to the connection hole (121), and the second end of the implant rod (21) being used for mounting a patch; The deployment assembly (3) comprises an inner core rod (31), a flexible inner core (32), a rolling wheel (33) and a push button (34); the push button (34) is provided with a driving portion (341) and a sliding portion (342) which are connected to each other; the sliding portion (342) passes through the sliding groove (111) and is connected to the first end of the inner core rod (31); the sliding portion (342) is slidably connected to the sliding groove (111); the implant rod (21) is provided with a first guide hole; the inner core rod (31) is slidably passed through the first guide hole; the rolling wheel (33) is connected to the second end of the inner core rod (31) through the flexible inner core (32); the driving portion (341) of the push button (34) is pushed, and the rolling wheel (33) moves in a direction away from the handle assembly (1), so that the rolling wheel (33) rolls the patch.

2. The medical implant device according to claim 1, characterized in that The handle assembly (1) comprises a rotating shell (11) and a fixed shell (12); the rotating shell (11) is rotatably connected to the fixed shell (12); the slide groove (111) is arranged on a side wall of the rotating shell (11); and the connecting hole (121) is arranged at an end of the fixed shell (12) facing away from the rotating shell (11).

3. The medical implant device according to claim 1, characterized in that The implant assembly (2) further comprises an elastic member (23), wherein the elastic member (23) is installed in the handle assembly (1), and the elastic member (23) is used to apply an elastic force to the inner core rod (31) in a direction away from the patch.

4. The medical implant device according to claim 2, characterized in that: The handle assembly (1) further comprises a damping spring (13); an annular sawtooth (1131) is provided at one end of the rotating shell (11) close to the fixed shell (12); the damping spring (13) is installed in the fixed shell (12); the damping spring (13) is provided with an elastic arm (131); an end of the elastic arm (131) is provided with a convex tooth (1311) cooperating with the annular sawtooth (1131); the convex tooth (1311) is meshingly connected to the annular sawtooth (1131); and when the rotating shell (11) rotates, the elastic arm (131) can be deformed.

5. The medical implant device according to claim 4, characterized in that: The side wall of the elastic arm (131) is provided with a deformation groove (1312), and the deformation groove (1312) is capable of generating deformation.

6. The medical implant device according to claim 1, characterized in that: The side wall of the second end of the implant rod (21) is provided with an opening (211), the rolling wheel (33) is capable of moving at the opening (211), and the portion of the implant rod (21) provided with the opening (211) and the side wall of the implant rod (21) not provided with the opening (211) are transitioned through an arc.

7. The medical implant device according to claim 1, characterized in that: Two pre-drilled rods (22) are installed at intervals on the second end of the implant rod (21); the pre-drilled rods (22) are capable of installing a bone anchor (100), and the patch is installed on the bone anchor (100).

8. The medical implant device according to any one of claims 1 to 7, characterized in that: A limiting groove (212) is provided on the side wall of the portion of the implant rod (21) extending into the connecting hole (121), and a limiting boss (122) is provided on the inner wall of the connecting hole (121), wherein the limiting boss (122) is embedded in the limiting groove (212).

9. The medical implant device according to any one of claims 1 to 7, characterized in that: A first groove (3411) is provided in the middle of a side of the driving portion (341) of the push button (34) away from the sliding portion (342).

10. The medical implant device according to any one of claims 1 to 7, characterized in that: The rolling wheel (33) is in the shape of a waist drum, and is provided with a through hole for the flexible inner core (32) to pass through.

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