Instrument assembly for artificial transverse ligament reconstruction of atlas

Abstract

The instrument assembly comprises implantation forceps and a guiding piece, the guiding piece is provided with a guiding channel, the implantation forceps can be operated to be guided to a set position near an odontoid neck portion through the guiding channel, the front end of the implantation forceps can be operated to be opened or closed to form an annular forceps head, and the annular forceps head is connected with the implantation forceps. The annular forcep head surrounds the dentiform protruding neck part to form a forcep clamp channel; according to the instrument assembly for reconstruction of the artificial transverse ligament of the atlas, in the process that the artificial transverse ligament is placed into the atlas, an operation channel for operation can be formed, the invalid transverse ligament of the atlas is reconstructed, operation trauma is small, the dura mater cannot be damaged, and postoperative recovery is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an instrument component for reconstruction of artificial transverse ligament of atlas. Background Art

[0002] Atlas injuries account for about 2-13% of spinal injuries. Transverse ligament injury of the atlas will cause serious damage to the mechanical stability of the atlantoaxial joint, and the resulting atlantoaxial instability will pose a serious threat to the patient's life. For atlantoaxial instability caused by atlantoaxial transverse ligament rupture, we usually use atlantoaxial fusion for treatment, but this will cause the atlantoaxial joint, which can provide about 50% rotational range of motion for the cervical spine, to lose its function, seriously affecting the patient's postoperative quality of life, and also leading to accelerated degeneration of the adjacent cervical segments that have not been fused. Therefore, reconstruction of the atlas transverse ligament is undoubtedly a good way to solve this problem, but at present, there is a problem in the reconstruction of the atlas transverse ligament that the artificial transverse ligament cannot safely pass through the narrow gap formed by the inner side of the atlas lateral mass, the neck of the odontoid process, and the dura mater.

[0003] Therefore, there is an urgent need to develop an instrument for reconstruction of the artificial transverse ligament of the atlas, which can assist in establishing a safe surgical channel during the reconstruction of the artificial transverse ligament of the atlas, and then facilitate the placement of the artificial transverse ligament into the narrow gap formed by the inner side of the atlas lateral mass, the neck of the odontoid process, and the dura mater, thereby reducing the difficulty of surgical reconstruction of the artificial transverse ligament. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide an instrument assembly for reconstruction of the artificial transverse ligament of the atlas, which can assist in establishing a safe surgical channel during the reconstruction of the artificial transverse ligament of the atlas, facilitate the insertion of the artificial transverse ligament, reduce the difficulty of surgical reconstruction of the artificial transverse ligament, and also reduce the surgical risk of the patient, which is beneficial to the patient's postoperative recovery, preserve the patient's atlantoaxial mobility, and improve the quality of life after surgery.

[0005] The utility model discloses an instrument assembly for reconstruction of artificial transverse ligament of atlas, comprising an implantation forceps and a guide, wherein the guide is provided with a guide channel, the implantation forceps can be operated to be guided to a set position near the neck of the odontoid process through the guide channel, the front end of the implantation forceps can be operated to be opened or closed to form an annular forceps head, and the annular forceps head surrounds the neck of the odontoid process to form a clamping channel.

[0006] Furthermore, it also includes a probe hook, which is used to peel off the locally adhered soft tissue near the neck of the odontoid process and form a semi-annular channel after peeling off the soft tissue.

[0007] Furthermore, the implant forceps include a handpiece, an operating part and a clamping part, the handpiece includes a hand rest and a connecting rod, the operating part is sleeved on the connecting rod and can move axially along the connecting rod, the clamping part is arranged at the end of the connecting rod, and the clamping part can be driven by the operating part to bend to form the annular clamp head.

[0008] Furthermore, two traction wires are provided between the operating portion and the clamping portion and are symmetrically arranged along the axis of the connecting rod, so that the clamping portion can be driven to bend or not bend.

[0009] Furthermore, the clamping part includes two clamp arms, which form a "U"-shaped structure. The two clamp arms are respectively provided with openings at one end close to the connecting rod, and the two clamp arms are provided with grooves at one end away from the connecting rod. The operating part is provided with two connecting holes corresponding to the openings, and the two traction wires are respectively arranged between the openings and the connecting holes and pass through the openings to be connected with the grooves, so that the two clamp arms can be operated to bend inwards.

[0010] Furthermore, a bending portion is provided at the end of the pliers arm, and a plurality of sawtooth-shaped grooves are provided inside the bending portion. The bending portion can be bent inwardly under the traction of the traction wire to form the annular pliers head.

[0011] Furthermore, the clamp arm is a hollow tubular structure, and the clamp channel is formed in the hollow tubular structure.

[0012] Furthermore, the inner diameter of the hollow tubular structure is 2mm-3mm, the wall thickness of the hollow tubular structure is 1mm-2mm, the interval of the serrated grooves is 2mm-2.5mm, the width of the serrated grooves is 1mm-2mm, the depth of the serrated grooves is 3mm-4mm, the outer length of the clamp channel is 40mm-41mm, the inner length of the clamp channel is 39mm-40mm, and the inner spacing between the two clamp arms is 13mm-15mm.

[0013] Furthermore, the guide member includes a hand-held portion I and a semicircular bending portion, and the hand-held portion and the semicircular bending portion are groove structures and form the guide channel, so that the implantation forceps can enter the set position through the guide channel.

[0014] Furthermore, the probe hook includes a hand-held portion II, and the end of the hand-held portion II extends forward and bends to form a tip structure.

[0015] The beneficial effects of the utility model are as follows: the instrument assembly for reconstruction of the artificial transverse ligament of the atlas of the utility model first peels off the locally adhered soft tissue near the neck of the odontoid process by a probe hook and forms a potential semi-circular passage, and then forms a guide channel by a guide piece, which is convenient for subsequent surgical operations, can reduce the impact on nearby tissues, and reduce the difficulty of the operation. At the same time, a clamping channel is formed by implanting forceps, thereby facilitating the reconstruction of the artificial transverse ligament. The whole process can minimize the surgical trauma and reduce the probability of postoperative complications of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a structural schematic diagram of the implantation forceps of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the probe hook;

[0019] Figure 3 is a schematic diagram of the structure of the guide;

[0020] Figure 4 It is a schematic diagram of the structure of the implantation forceps and the guide member;

[0021] Figure 5 for Figure 1 A partial enlarged view of

[0022] The above drawings contain the following reference numerals:

[0023] 1. Probe hook; 101. Hand-held part II; 2. Guide; 201. Guide channel; 202. Hand-held part I; 203. Bending part; 3. Implantation forceps; 301. Clamping channel; 302. Connecting rod; 303. Operating part; 3031. Connecting hole; 304. Clamping part; 3041. Forceps arm; 3042. Opening; 3043. Groove; 3044; Serrated groove; 305. Traction wire; 306. Hand rest; 4. Odontoid process neck; 5. Guide wire; 6. Artificial transverse ligament. DETAILED DESCRIPTION

[0024] Figure 1 This is a schematic diagram of the structure of the implantation forceps of the utility model. Figure 2 The schematic diagram of the structure of the probe hook is shown in FIG. Figure 3 is a schematic diagram of the structure of the guide. Figure 4 This is a schematic diagram of the structure of the implantation forceps and the guide. Figure 5 for Figure 1 A partial enlarged view of Figure 1-5As shown: an instrument assembly for reconstruction of artificial transverse ligament of atlas in this embodiment comprises an implantation forceps 3 and a guide member 2, wherein the guide member 2 is provided with a guide channel 201, wherein the implantation forceps 3 can be operated to be guided to a set position near the neck portion 4 of the odontoid process through the guide channel 201, wherein the front end of the implantation forceps 3 can be operated to be opened or closed to form an annular forceps head, wherein the annular forceps head surrounds the neck portion 4 of the odontoid process to form a clamping channel 301; in this structure, the guide member 2 can be a structure with a slide groove, wherein the guide channel is formed on the body of the guide member 2 through the slide groove structure, and after the guide member 2 is placed in the semi-annular channel, the guide member 2 can surround the neck portion 4 of the odontoid process, thereby forming a protective To form a channel for subsequent surgical operations, in this structure, the material of the implant forceps 3 needs to have good toughness, wear resistance and fatigue resistance, and can be made of polyamide 12 and other materials. The implant forceps 3 can enter the rear side of the odontoid neck 4 through the guide channel 201, and at the same time, the front end of the implant forceps 3 can be operated (manually operated to control the opening or closing of the front end of the implant forceps) to open or close to form an annular clamp head (the front end of the implant forceps is bent to form an annular clamp head). At this time, since the guide channel 201 is formed on the outside of the odontoid neck 4 and surrounds the odontoid neck 4, the implant forceps 3 is located in the guide channel 201 and surrounds the odontoid neck 4, thereby forming a clamping channel 301.

[0025] In the prior art, for the surgical treatment of atlas transverse ligament injury, due to the great difficulty in operation, for the surgery requiring reconstruction of the atlas transverse ligament, the artificial transverse ligament cannot safely pass through the narrow gap formed by the inner side of the atlas lateral mass, the neck of the odontoid process, and the dura mater; the utility model is an instrument component for reconstruction of the artificial transverse ligament of the atlas, which can assist in establishing a safe surgical channel during the reconstruction of the artificial transverse ligament of the atlas, thereby facilitating the placement of the artificial transverse ligament into the narrow gap formed by the inner side of the atlas lateral mass, the neck of the odontoid process, and the dura mater, thereby reducing the difficulty of surgical reconstruction of the artificial transverse ligament.

[0026] In this embodiment, a probe hook 1 is further included, which is used to peel off the locally adhered soft tissue near the neck of the odontoid process 4 and form a semi-circular channel after peeling off the soft tissue; in this structure, the neck of the odontoid process 4 is a columnar structure with a certain curvature. By using the probe hook 1 to peel off the soft tissue adhered to the neck of the odontoid process 4, a potential semi-circular channel is formed near the neck of the odontoid process 4, which is convenient for subsequent further operations and can avoid affecting other tissues;

[0027] In this embodiment, the implantation forceps 3 include a handpiece, an operating portion 303 and a clamping portion 304, the handpiece includes a hand rest 306 and a connecting rod 302, the operating portion 303 is sleeved on the connecting rod 302 and can move along the axial direction of the connecting rod 302, the clamping portion 304 is arranged at the end of the connecting rod 302, and the clamping portion 304 can be driven by the operating portion to bend to form the annular clamp head; in this structure, the connecting rod 302 is a square rod, which can make the operating portion 303 move along the axial direction of the connecting rod 302 (in the figure). The hand rest 306 can be moved in the up and down directions without radial rotation. The cross section of the hand rest 306 is a semicircular structure with a certain curvature, which is convenient for the operator to hold and operate. One end of the connecting rod 302 is fixedly connected to the hand rest 306, and the other end is connected to the clamping part 304. The operating part 303 is sleeved on the connecting rod 302 and can slide along the connecting rod 302. Then, through the movement of the operating part 303, the clamping part 304 can be operated to bend or open to form a ring-shaped clamp head. The overall structure is easy to operate and can be achieved without complicated operations.

[0028] In this embodiment, two traction wires 305 are further included. The two traction wires 305 are arranged between the operating part 303 and the clamping part 304, and are symmetrically arranged along the axis of the connecting rod 302, so that the clamping part 304 can be driven to bend or not bend; the traction wire 305 needs to be made of sufficiently thin and high-strength material, and can be made of polypropylene, which has high strength and durability, is easy to ligate, and is not easy to slip, so that the traction wire 305 can be firmly fixed to the operating part 303 and the clamping part 304, the traction wire 305 is set and the operating part 303 and the clamping part 304 are connected through the traction wire 305, and the traction wire 305 is respectively set corresponding to the two clamp arms of the clamping part 304.

[0029] In this embodiment, the clamping portion 304 includes two clamp arms 3041, and the two clamp arms 3041 form a "U"-shaped structure. The two clamp arms 3041 are respectively provided with openings 3042 at one end close to the connecting rod 302, and the two clamp arms 3041 are provided with grooves 3043 at one end away from the connecting rod 302. The operating portion 303 is provided with two connecting holes 3031 corresponding to the openings 3043, and the two traction wires 305 are respectively provided at the openings 3043 and the connecting rod 302. The connecting holes 3031 are connected to the groove 3043 through the opening 3043, so that the two clamp arms 3041 can be operated to bend inwardly; the opening 3043 is set at one end of the two clamp arms 3041 close to the connecting rod 302, which is convenient for passing the traction wire 305, and the traction wire 305 is connected to the end of the clamp arm 3041 (the end away from the connecting rod), so that the two clamp arms 3041 can be bent inwardly (close to the side of the odontoid neck 4) to form an annular clamp head, and then surround the odontoid neck 4.

[0030] In this embodiment, a bending portion is provided at the end of the clamp arm 3041, and a plurality of serrated grooves 3044 are provided on the inner side of the bending portion. The bending portion can bend inwardly under the traction of the traction wire 305 and form the annular clamp head; a bending portion is formed at the end of the clamp arm 3041, and the curvature of the bending portion is adapted to the curvature of the guide channel 201. The clamp arm 3041 is partially bendable, which can reduce the impact of the implantation clamp 3 on the surrounding tissues. A plurality of serrated grooves 3044 are provided to form a bending clearance space. When the bending portion bends, it is convenient to reduce the stress concentration caused by the bending on the material and extend the service life. At the same time, the bending portion is bent inwardly in a single direction. When the two clamp arms 3041 bend inwardly, the triangular serrated grooves 3041 form a closed structure, thereby forming an annular clamp head.

[0031] In this embodiment, the clamp arm 3041 is a hollow tubular structure, and the clamp channel 301 is formed in the hollow tubular structure; the clamp arm 3041 is a hollow tubular structure, and when the clamp arm 3041 is bent, the two clamp arms 3041 are combined to form the clamp channel 301 inside the clamp arm 3041. By setting the clamp arm 3041 as a hollow tubular structure, the overall structure is simple, which makes it easy to wrap the artificial transverse ligament around the neck of the odontoid process through the clamp channel 301.

[0032] In this embodiment, the inner diameter of the hollow tubular structure is 2mm-3mm, the wall thickness of the hollow tubular structure is 1mm-2mm, the interval of the serrated grooves 3044 is 2mm-2.5mm, the width of the serrated grooves 3044 is 1mm-2mm, the depth of the serrated grooves 3044 is 3mm-4mm, the outer length of the clamp channel 301 is 40mm-41mm (i.e., the length of the side away from the neck of the odontoid process), and the clamp channel 30 The inner length of the hollow tubular structure 1 is 39mm-40mm (i.e., the length of the side close to the neck of the odontoid process), and the inner spacing of the two clamp arms 3041 is 13mm-15mm (i.e., the side close to the neck of the odontoid process); the inner diameter of the hollow tubular structure, the spacing of the serrated grooves 3044, the length of the clamp channel 301, and the spacing of the inner sides of the two clamp arms 3041 (close to the side of the neck of the odontoid process 4) can be set according to actual needs to facilitate improving the overall surgical effect. The preferred hollow tubular structure The inner diameter is 2mm, the wall thickness of the hollow tubular structure is 1mm, the interval of the serrated groove 3044 is 2.04mm, the width of the serrated groove 3044 is 1.26mm, the depth of the serrated groove 3044 is 3.2mm, the outer length of the clamp channel 301 is 40.8mm, the inner length of the clamp channel 301 is 39.2mm, and the inner spacing of the two clamp arms 3041 is 13mm; in this structure, the spacing of the two clamp arms 3041 is 13mm. The inner spacing is 13mm, which is set according to the longitudinal diameter of the odontoid neck. This is to ensure that the flexible clamping channel 301 can completely surround the entire odontoid neck 4 after bending. The inner diameter of the hollow tubular structure is preferably set to 2mm, and the tube wall thickness is 1mm, that is, the diameter of the entire hollow tubular structure is 4mm, thereby reducing the impact on surrounding tissues. At the same time, the length of the clamping channel 301 is 40mm, which can reduce the impact on other parts while surrounding the odontoid neck 4.

[0033] In this embodiment, the guide member 2 includes a hand-held portion Ⅰ202 and a semicircular bending portion 203, and the hand-held portion 202 and the semicircular bending portion 203 are groove structures, and form the guide channel 201, so that the implantation forceps 3 can enter the set position through the guide channel 201; the guide member 2 as a whole is a structure with a groove, thereby forming a guide channel 201, so that the implantation forceps 3 can enter the vicinity of the neck of the odontoid process 4 (set position) along the guide channel 201, forming a channel for subsequent operation, thereby reducing the difficulty of the operation.

[0034] In this embodiment, the probe hook 1 includes a hand-held portion II 101, the end of which extends forward and bends to form a pointed structure; the hand-held portion II 101 is a flat strip structure, and the end extends forward and bends to form a hook-shaped front end structure, which is convenient for stripping the soft tissue near the odontoid neck 4.

[0035] In this embodiment, when in use, a probe hook is first used to peel off the soft tissue adhered to the vicinity of the neck of the odontoid process to form a semi-annular channel, and a traction member is placed in the semi-annular channel to form a guide channel; the implantation forceps are placed close to the guide channel and, under the guidance of the guide channel, bypass the neck of the odontoid process so that the neck of the odontoid process is located between the two clamp arms of the implantation forceps, and then, under the action of the traction wire, the end of the implantation forceps is bent to form a clamping channel, and then the implantation forceps can be withdrawn after passing through the clamping channel through the guide wire 5, and then the artificial transverse ligament 6 is connected to the guide wire, and under the guidance of the guide wire 5, the artificial transverse ligament 6 is wrapped around the neck of the odontoid process, and finally, the artificial transverse ligament is fixed to the lateral masses on both sides of the atlas through anchors.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An instrument assembly for reconstruction of artificial transverse ligament of atlas, characterized in that: The invention comprises an implantation forceps and a guide member, wherein the guide member is provided with a guide channel, and the implantation forceps can be operated to be guided to a set position near the neck of the odontoid process through the guide channel, and the front end of the implantation forceps can be operated to be opened or closed to form an annular forceps head, and the annular forceps head surrounds the neck of the odontoid process to form a clamping channel.

2. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 1, characterized in that: The device also comprises a probe hook, which is used for peeling off the locally adhered soft tissue near the neck of the odontoid process and forming a semi-annular channel after peeling off the soft tissue.

3. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 1, characterized in that: The implantation forceps include a handpiece, an operating part and a clamping part. The handpiece includes a hand rest and a connecting rod. The operating part is sleeved on the connecting rod and can move axially along the connecting rod. The clamping part is arranged at the end of the connecting rod. The clamping part can be driven by the operating part to bend to form the annular forceps head.

4. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 3, characterized in that: It also includes two traction wires, which are arranged between the operating part and the clamping part and are symmetrically arranged along the axis of the connecting rod, so that the clamping part can be driven to bend or not bend.

5. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 4, characterized in that: The clamping part includes two clamp arms, and the two clamp arms form a "U"-shaped structure. The two clamp arms are respectively provided with openings at one end close to the connecting rod, and the two clamp arms are provided with grooves at one end away from the connecting rod. The operating part is provided with two connecting holes corresponding to the openings, and the two traction wires are respectively arranged between the openings and the connecting holes and pass through the openings to be connected with the grooves, so that the two clamp arms can be operated to bend inwards.

6. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 5, characterized in that: A bending portion is provided at the end of the clamp arm, and a plurality of sawtooth-shaped grooves are provided inside the bending portion. The bending portion can be bent inwardly under the traction of the traction wire to form the annular clamp head.

7. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 6, characterized in that: The clamp arm is a hollow tubular structure, and the clamp channel is formed in the hollow tubular structure.

8. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 7, characterized in that: The inner diameter of the hollow tubular structure is 2mm-3mm, the wall thickness of the hollow tubular structure is 1mm-2mm, the interval of the serrated grooves is 2mm-2.5mm, the width of the serrated grooves is 1mm-2mm, the depth of the serrated grooves is 3mm-4mm, the outer length of the clamp channel is 40mm-41mm, the inner length of the clamp channel is 39mm-40mm, and the inner spacing between the two clamp arms is 13mm-15mm.

9. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 1, characterized in that: The guide member includes a hand-held portion I and a semicircular bending portion, wherein the hand-held portion and the semicircular bending portion are groove structures and form the guide channel, so that the implantation forceps can enter a set position near the neck of the odontoid process through the guide channel.

10. The instrument assembly for reconstruction of the artificial transverse ligament of the atlas according to claim 2, characterized in that: The probe hook comprises a hand-held part II, and the end of the hand-held part II extends forward and is bent to form a tip structure.

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