Titanium cage clamping impactor and application method thereof

Abstract

The invention discloses a titanium cage clamping impactor which is used for spinal surgery. Comprising a pair of clamping pliers and a striking rod, the clamping pliers comprise a joint shaft, a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are rotationally connected through the joint shaft, and the striking rod penetrates through the joint shaft in the radial direction and is located on the same horizontal plane with the clamping pliers. According to the titanium cage clamping and striking device and the application method thereof, the titanium cage can be stably clamped and the position of the titanium cage can be adjusted in an operation, and the titanium cage can be safely and effectively implanted into a decompressed gap, so that the titanium cage mounting problem in the existing vertebral body secondary total resection operation process is solved, the operation of a doctor in the operation process is simplified, and the operation efficiency is improved. And the operation safety is improved.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a titanium cage clamping striker and an application method thereof. Background Art

[0002] Vertebral decompression and fusion is a common surgical procedure for the treatment of spinal fractures, spinal tumors and other diseases. Vertebral decompression and fusion is performed by removing the diseased vertebral body and the upper and lower intervertebral discs to decompress the vertebral body. During the operation, autologous bone, vertebral fusion device (titanium cage) or 3D printed vertebral body will be selected to fill the decompressed space, and then fixed with titanium plates and screw systems.

[0003] Autologous bone transplantation has disadvantages such as donor site pain, hematoma, and infection. 3D-printed artificial vertebrae have problems such as high price and long customization time. Traditional titanium cages have the advantages of high mechanical strength and good fusion effect, and are most widely used in subtotal vertebrae resection.

[0004] At present, when a subtotal vertebral body resection is performed clinically, the traditional installation method is to first clamp the titanium cage with a vascular clamp and roughly fill the gap after decompression, and then use a deepening device to adjust the position of the titanium cage. The traditional installation method has problems such as low operation accuracy and easy damage to the end plate and spinal cord, which affects the safety of the operation and the treatment effect. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the current method of installing titanium cages during surgery has problems such as low operating accuracy and easy damage to the end plates and bone marrow, which affects the safety of the surgery and the treatment effect. The present invention provides a titanium cage clamping impactor and an application method thereof, which can firmly clamp the titanium cage and adjust its position during surgery, and can safely and effectively implant the titanium cage into the space after decompression, thereby solving the problem of titanium cage installation during the existing vertebral body subtotal resection surgery, simplifying the doctor's operation during the surgery, and improving the safety of the surgery.

[0006] To achieve the above-mentioned purpose, the present invention provides a titanium cage clamping striker for spinal surgery; it includes a clamping forceps and a striking rod, wherein the clamping forceps includes a joint shaft, a first clamping member and a second clamping member, the first clamping member and the second clamping member are rotatably connected through the joint shaft, and the striking rod radially passes through the joint shaft and is on the same horizontal plane as the clamping forceps.

[0007] Furthermore, the first clamping member includes a first clamping forceps arm, a first clamping tooth, a first joint shaft hole, a first clamping handle, a first ratchet and a first clamping finger ring, wherein the first clamping tooth, the first clamping forceps arm, the first joint shaft hole, the first clamping handle, the first ratchet and the first clamping finger ring are arranged from top to bottom, the first ratchet is arranged at the connection between the first clamping handle and the first clamping finger ring and the first ratchet is arranged on both sides of the first clamping handle; the first clamping member is arranged to be integrally formed.

[0008] Furthermore, the second clamping member includes a second clamping forceps arm, a second clamping tooth, a second joint axis hole, a second clamping handle, a second ratchet and a second clamping finger ring, wherein the second clamping tooth, the second clamping forceps arm, the second joint axis hole, the second clamping handle, the second ratchet and the second clamping finger ring are arranged from top to bottom, the second ratchet is arranged at the connection between the second clamping handle and the second clamping finger ring and the second ratchet is arranged on a single side of the second clamping handle, and the second clamping member is arranged to be integrally formed.

[0009] Furthermore, the first joint shaft hole has an axial through hole for cooperating with the second joint shaft hole, and a groove penetrating the distal and proximal ends is radially arranged on one side of the first joint shaft hole facing the second clamping member, and the direction of the groove is consistent with the distal and proximal end direction of the clamping forceps.

[0010] Furthermore, the second joint shaft hole includes a protrusion in the axial direction, which is arranged on the side facing the first clamping member and cooperates with the axial through hole of the first joint shaft hole; the second joint shaft hole also includes a through hole passing through the distal and proximal ends, and the direction of the through hole is consistent with the distal and proximal directions of the clamping pliers. When the first clamping member and the second clamping member cooperate with each other, the through hole of the second joint shaft hole and the groove of the first joint shaft hole form a through hole for the striking rod to pass through the through hole.

[0011] Furthermore, the joint shaft is used to connect and fix the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are rotatably connected and do not fall off; the joint shaft includes a through hole, which is coaxially designed with the through hole formed by the through hole of the second joint shaft hole and the groove of the first joint shaft hole.

[0012] Furthermore, the first clamping clamp arm and the second clamping clamp arm both have a concave curved surface, and when the first clamping clamp arm and the second clamping clamp arm are matched, the concave curved surface fits with the titanium cage.

[0013] Further, the first clamping tooth and the second clamping tooth are configured to be conical.

[0014] Furthermore, an inwardly recessed arc is provided between the first ratchet and the second ratchet. When the first clamp and the second clamp are clamped, the arc forms a connecting hole. The connecting hole is coaxially designed with the through hole of the joint shaft.

[0015] Furthermore, the striking rod comprises a supporting base, a connecting handle and a stress flange, and the supporting base and the stress flange are respectively arranged at two ends of the connecting handle.

[0016] Furthermore, the support base is configured to have a concave surface that fits the titanium cage.

[0017] In a preferred embodiment of the present invention, a method for applying a titanium cage to clamp a striker is provided, comprising the following steps:

[0018] Step 1: Insert the thumb and the ring finger into the two clamping rings respectively, use the first clamping arm and the second clamping arm at the front end of the clamping pliers to clamp the titanium cage, so that the first clamping teeth and the second clamping teeth are embedded in the micro-pores on the titanium cage, and gently push the thumb and the ring finger against each other to make the ratchet teeth dock, so as to ensure that the clamping arms stably fix the titanium cage; then push the striking rod forward to ensure that the concave surface of the support base is close to the titanium cage;

[0019] Step 2: Then implant the titanium cage into the space after decompression. Insert the thumb and ring finger of the left hand into the two clamping rings to fix the titanium cage. Fix the striking rod with the index finger and thumb of the left hand. Use the bone hammer in the right hand to knock on the stress flange of the striking rod to adjust the depth of the titanium cage, so that the titanium cage can be gradually and safely driven into the space after decompression.

[0020] Technical Effects

[0021] The present invention provides a titanium cage clamping and striking device, which has a simple structure and is easy to use. It ensures that there is no knocking mark on the titanium cage during the insertion process. During the implantation process, the titanium cage can be directly struck to adjust the position of the titanium cage, thereby simplifying the surgical operation steps. The titanium cage can be stably clamped, and when the striking rod is struck, the titanium cage is evenly implanted into the decompressed gap under force, thereby improving the safety of the operation. The problem of titanium cage installation is effectively solved, the difficulty of surgical operation is reduced, and the surgical efficiency is improved.

[0022] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a titanium cage clamping striker according to a preferred embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a first clamping member of a titanium cage clamping a striker according to a preferred embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the horizontal structure of a first clamping piece of a titanium cage clamping a striker according to a preferred embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a second clamping member of a titanium cage clamping a striker according to a preferred embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the horizontal structure of a second clamping piece of a titanium cage clamping a striker according to a preferred embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a titanium cage clamping a joint shaft of a striking device according to a preferred embodiment of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a striking rod of a titanium cage clamping striking device according to a preferred embodiment of the present invention;

[0030] Figure 8 It is a structural schematic diagram of a titanium cage clamping striker clamping a titanium cage according to a preferred embodiment of the present invention;

[0031] Fig. 9 It is a schematic diagram of a titanium cage clamping striker embedded in a titanium cage for striking according to a preferred embodiment of the present invention;

[0032] Among them, 1-first clamping piece, 2-second clamping piece, 3-joint axis, 4-strike rod, 5-titanium cage, 6-bone hammer, 7-spine, 11-first clamping tooth, 12-first clamping forceps arm, 13-first joint axis hole, 14-groove of the first joint axis hole, 15-first clamping handle, 16-first ratchet, 17-first clamping finger ring, 21-second clamping tooth, 22-second clamping forceps arm, 23-second joint axis hole, 24-protrusion of the second joint axis hole, 25-second clamping handle, 26-second ratchet, 27-second clamping finger ring; 31-through hole; 41-support base, 42-connecting handle, 43-stress flange. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] In the following description, specific details such as specific internal procedures and techniques are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0035] like Figure 1-7 As shown, the present invention provides a titanium cage clamp striker for spinal surgery; it includes a clamp and a striking rod, wherein the clamp includes a joint shaft 3, a first clamp 1 and a second clamp 2, the first clamp 1 and the second clamp 2 are rotatably connected through the joint shaft 3, and the striking rod 4 radially passes through the joint shaft 3 and is on the same horizontal plane as the clamp.

[0036] Among them, the first clamping member 1 includes a first clamping pliers arm 12, a first clamping tooth 11, a first joint shaft hole 13, a first clamping handle 15, a first ratchet 16 and a first clamping finger ring 17, wherein the first clamping tooth 11, the first clamping pliers arm 12, the first joint shaft hole 13, the first clamping handle 15, the first ratchet 16 and the first clamping finger ring 17 are arranged from top to bottom, the first ratchet 16 is arranged at the connection between the first clamping handle 15 and the first clamping finger ring 17 and the first ratchet 16 is arranged on both sides of the first clamping handle 15; the first clamping member 1 is arranged to be integrally formed.

[0037] The second clamping member 2 includes a second clamping pliers arm 22, a second clamping tooth 21, a second joint shaft hole 23, a second clamping handle 25, a second ratchet 26 and a second clamping finger ring 27, wherein the second clamping tooth 21, the second clamping pliers arm 22, the second joint shaft hole 23, the second clamping handle 25, the second ratchet 26 and the second clamping finger ring 27 are arranged from top to bottom, the second ratchet 26 is arranged at the connection between the second clamping handle 25 and the second clamping finger ring 27 and the second ratchet 26 is arranged on a single side of the second clamping handle 25, and the second clamping member 2 is arranged to be integrally formed.

[0038] The first joint shaft hole 13 is arranged at the end of the first clamping arm 12, and the second joint shaft hole 23 is arranged at the end of the second clamping arm 22. In the present embodiment, a titanium cage clamping striker has one end with the first clamping teeth 11 and the second clamping teeth 21 as the distal end, and one end with the first clamping finger ring 17 and the second clamping finger ring 27 as the proximal end. Therefore, the first joint shaft hole 13 and the second joint shaft hole 23 are arranged close to the distal end of the titanium cage clamping striker, and the first clamping member 1 and the second clamping member 2 are rotatably clamped by the joint shaft 3.

[0039] The first joint shaft hole 13 has an axial through hole for cooperating with the second joint shaft hole 23. The first joint shaft hole 13 has a radial groove 14 running through the distal and proximal ends on one side facing the second clamping member. The direction of the groove 14 is consistent with the distal and proximal directions of the clamping forceps.

[0040] The second joint shaft hole 23 includes a protrusion 24 in the axial direction, and the protrusion 24 is arranged on the side facing the first clamping member, and cooperates with the axial through hole of the first joint shaft hole 13; the second joint shaft hole 23 also includes a through hole passing through the distal and proximal ends, and the direction of the through hole is consistent with the distal and proximal directions of the clamping pliers. The through hole passes through the second joint shaft hole and the protrusion. When the first clamping member 1 and the second clamping member 2 cooperate with each other, the through hole of the second joint shaft hole 23 and the groove 14 of the first joint shaft hole 13 form a through hole for the striking rod to pass through the through hole.

[0041] The joint shaft 3 is used to connect and fix the first clamp 1 and the second clamp 2, so that the first clamp 1 and the second clamp 2 are rotatably connected and do not fall off; the joint shaft 3 includes a through hole 31, which is coaxially designed with the through hole formed by the through hole of the second joint shaft hole 23 and the groove 14 of the first joint shaft hole 13. During production, after the joint shaft 3 passes through the first clamp and the second clamp, a flange is welded on the other end surface to ensure that the first clamp and the second clamp fit together and do not fall off. When the first clamp and the second clamp rotate, the joint shaft does not rotate, so that when the first clamp and the second clamp are clamped, the through hole formed by the through hole 31 of the joint shaft 3, the through hole of the second joint shaft hole 23 and the groove 14 of the first joint shaft hole 13 overlap.

[0042] The first clamping arm 12 and the second clamping arm 22 both have a concave curved surface, and when the first clamping arm 12 and the second clamping arm 22 are matched, the concave curved surface fits with the titanium cage. Specifically, the first clamping tooth 11 is arranged on the inner side of the head end of the first clamping arm 12, and the second clamping tooth 21 is arranged on the inner side of the head end of the second clamping arm 22; the first clamping tooth 11 and the second clamping tooth 12 are arranged in a conical shape.

[0043] The first clamping finger ring 17 is arranged on the outer side of the first clamping handle 15, and the line connecting the center of the first clamping finger ring 17 and the end of the first clamping handle 15 is 135°-150° to the first clamping handle 15; the second clamping finger ring 27 is arranged on the outer side of the second clamping handle 25, and the line connecting the center of the second clamping finger ring 27 and the end of the second clamping handle 25 is 135°-150° to the second clamping handle 25.

[0044] The first clamping member 1 and the second clamping member 2 are butted together by ratchets, so that the two clamping pliers are tightly hinged together, which can prevent the titanium cage from falling off when clamping the titanium cage. An inwardly concave arc is arranged in the middle of the first ratchet 16 and the second ratchet 26. When the first clamping member 1 and the second clamping member 2 are clamped, the arc forms a connecting hole, and the connecting hole is coaxially designed with the through hole of the joint axis. Specifically, the first ratchet 16 is arranged on both sides of the first clamping handle 15, wherein the part on the same side of the first clamping finger ring 17 is provided with ratchets, and the other side has no ratchets and is provided with an inwardly concave arc. The second ratchet 26 is arranged on one side of the second clamping handle 25, which is the side away from the second clamping finger ring 27. The half of the second ratchet 26 away from the second clamping handle 25 is provided with ratchets, and the half close to the second clamping handle 25 is provided with an inwardly concave arc. When the first clamping member 1 and the second clamping member 2 are close and clamped by the ratchets, the arc forms a through hole.

[0045] The striking rod 4 includes a support base 41, a connecting handle 42 and a stress flange 43, and the support base 41 and the stress flange 43 are respectively arranged at the two ends of the connecting handle 42. The support base 41 is configured to have a concave surface that fits the titanium cage. After clamping the titanium cage, the support base 41 is pushed forward so that the concave surface of the support base 41 is close to the titanium cage 5, thereby ensuring that when the proximal end of the striking rod is struck, the force is evenly and effectively transmitted to the titanium cage through the support base. The stress flange can evenly withstand the striking stress. In this embodiment, the size of the support base is set to 4mm in width and 6-8mm in length according to the specifications of the titanium cage used clinically.

[0046] The striking rod 4 is always inserted in the through hole of the joint shaft, and the through hole of the joint shaft, the through hole of the second joint shaft hole 23 and the groove 14 of the first joint shaft hole 13 have enough space for the striking rod 4 to slide during the process of the first clamping member and the second clamping member separately clamping the titanium cage.

[0047] like Figure 8-9 As shown, in a preferred embodiment of the present invention, a method for clamping a striker with a titanium cage is provided, comprising the following steps:

[0048] Step 1: insert the thumb and the ring finger into the two clamping finger rings 17 and 27 respectively, use the first clamping clamp arm 12 and the second clamping clamp arm 22 at the front end of the clamping clamp to clamp the titanium cage 5, so that the first clamping tooth 11 and the second clamping tooth 21 are embedded in the micro-pores on the titanium cage 5, and gently push the thumb and the ring finger against each other to make the ratchet teeth dock (at this time, place the striking rod in the arc of the first ratchet tooth and the second ratchet tooth), so as to ensure that the clamping clamp arm stably fixes the titanium cage; then push the striking rod 4 forward to ensure that the concave surface of the support base 41 is close to the titanium cage;

[0049] Step 2: Then implant the titanium cage 5 into the space after decompression of the spine 7, insert the thumb and ring finger of the left hand into the two clamping rings to fix the titanium cage, fix the striking rod 4 with the index finger and thumb of the left hand, and use the bone hammer 6 of the right hand to knock the stress flange 43 of the striking rod 4, so as to adjust the depth of the titanium cage, so that the titanium cage can be gradually and safely driven into the space after decompression. The steps of installing the titanium cage are simplified, and the safety of the operation is improved.

[0050] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A titanium cage clamping striker, characterized in that: Used for spinal surgery; includes a clamp and a striking rod, wherein the clamp includes a joint shaft, a first clamp and a second clamp, the first clamp and the second clamp are rotatably connected via the joint shaft, and the striking rod radially passes through the joint shaft and is on the same horizontal plane as the clamp.

2. A titanium cage clamping striker as claimed in claim 1, characterized in that: The first clamping member includes a first clamping forceps arm, a first clamping tooth, a first joint shaft hole, a first clamping handle, a first ratchet and a first clamping finger ring, wherein the first clamping tooth, the first clamping forceps arm, the first joint shaft hole, the first clamping handle, the first ratchet and the first clamping finger ring are arranged from top to bottom, the first ratchet is arranged at the connection between the first clamping handle and the first clamping finger ring and the first ratchet is arranged on both sides of the first clamping handle; the first clamping member is arranged to be integrally formed.

3. A titanium cage clamping striker as claimed in claim 2, characterized in that: The second clamping member includes a second clamping pliers arm, a second clamping tooth, a second joint shaft hole, a second clamping handle, a second ratchet and a second clamping finger ring, wherein the second clamping tooth, the second clamping pliers arm, the second joint shaft hole, the second clamping handle, the second ratchet and the second clamping finger ring are arranged from top to bottom, the second ratchet is arranged at the connection between the second clamping handle and the second clamping finger ring and the second ratchet is arranged on a single side of the second clamping handle, and the second clamping member is arranged to be integrally formed.

4. A titanium cage clamping striker as claimed in claim 3, characterized in that: The first joint shaft hole has an axial through hole for cooperating with the second joint shaft hole. The first joint shaft hole has a radial groove penetrating the proximal and distal ends on one side facing the second clamping member, and the direction of the groove is consistent with the proximal and distal directions of the clamping forceps.

5. A titanium cage clamping striker as claimed in claim 4, characterized in that: The second joint shaft hole includes a protrusion in the axial direction, and the protrusion is arranged on the side facing the first clamping member, and cooperates with the axial through hole of the first joint shaft hole; the second joint shaft hole also includes a through hole passing through the distal and proximal ends, and the direction of the through hole is consistent with the distal and proximal ends of the clamping pliers. When the first clamping member and the second clamping member cooperate with each other, the through hole of the second joint shaft hole and the groove of the first joint shaft hole form a through hole for the striking rod to pass through the through hole.

6. A titanium cage clamping striker as claimed in claim 5, characterized in that: The joint shaft is used to connect and fix the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are rotatably connected and do not fall off; the joint shaft includes a through hole, which is coaxially designed with the through hole formed by the through hole of the second joint shaft hole and the groove of the first joint shaft hole.

7. A titanium cage clamping striker as claimed in claim 3, characterized in that: The first clamping clamp arm and the second clamping clamp arm both have a concave curved surface. When the first clamping clamp arm and the second clamping clamp arm are matched, the concave curved surface fits with the titanium cage.

8. A titanium cage clamping striker as claimed in claim 3, characterized in that: The first clamping teeth and the second clamping teeth are configured in a conical shape.

9. A titanium cage clamping striker as claimed in claim 6, characterized in that: An inwardly recessed arc is provided between the first ratchet tooth and the second ratchet tooth. When the first clamping member and the second clamping member are clamped, the arc forms a connecting hole. The connecting hole is coaxially designed with the through hole of the joint shaft.

10. The titanium cage clamping striker according to claim 1, characterized in that: The striking rod comprises a supporting base, a connecting handle and a stress flange, wherein the supporting base and the stress flange are respectively arranged at two ends of the connecting handle.

11. A titanium cage clamping striker as claimed in claim 10, characterized in that: The support base is configured to have a concave surface that fits the titanium cage.

12. A method for clamping a striker using a titanium cage as claimed in any one of claims 1 to 10, characterized in that: The following steps are involved: Step 1: Insert the thumb and the ring finger into the two clamping rings respectively, use the first clamping arm and the second clamping arm at the front end of the clamping pliers to clamp the titanium cage, so that the first clamping teeth and the second clamping teeth are embedded in the micro-pores on the titanium cage, and gently push the thumb and the ring finger against each other to make the ratchet teeth dock, so as to ensure that the clamping arms stably fix the titanium cage; then push the striking rod forward to ensure that the concave surface of the support base is close to the titanium cage; Step 2: Then implant the titanium cage into the space after decompression. Insert the thumb and ring finger of the left hand into the two clamping rings to fix the titanium cage. Fix the striking rod with the index finger and thumb of the left hand. Use the bone hammer in the right hand to knock on the stress flange of the striking rod to adjust the depth of the titanium cage, so that the titanium cage can be gradually and safely driven into the space after decompression.

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