CN217793226U - Wrist joint osteotomy navigation device - Google Patents

Abstract

The utility model relates to a wrist joint cuts bone navigation head, wrist joint cut bone navigation head include orientation module and guide module, and orientation module includes first butt face, and first butt face is equipped with and is used for the first constant head tank with the lister tubercle matched with of radius, and orientation module still is equipped with the first locating hole that runs through first butt face, and first locating hole is used for penetrating the pilot pin in order to be fixed in the radius with the pilot pin. The guide module includes the second butt face, and the second butt face is equipped with and is used for the second constant head tank with the list tubercle matched with of radius, and the guide module still is equipped with the second locating hole that runs through the second butt face, and the guide module still includes first spigot surface and second spigot surface, and first spigot surface sets up relatively with the second spigot surface and all is mutually perpendicular with the second butt face. The wrist joint osteotomy navigation device can perform accurate and rapid osteotomy on a wrist joint.

Description

Wrist joint osteotomy navigation device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a wrist joint navigation head.

Background

The wrist joint is one of the most important joints of the human body, and is easily damaged by traumatic, degenerative and rheumatoid arthritis and other diseases, so that the patients have serious pain or limited movement. With the medical progress, the total wrist replacement surgery has been increasingly applied to the treatment of wrist joint diseases, and the total wrist replacement prosthesis adopted by the method can eliminate pain and simultaneously retain the functions of partial volar flexion, dorsal extension, radial deviation and ulnar deviation of the wrist joint.

In order to implant a wrist prosthesis during a wrist surgery, it is necessary to perform osteotomy on the radial and carpal sides. Traditional osteotomy is all carried out by the doctor according to the experience, and the operation degree of difficulty is big, and in order to keep patient's bone volume, the doctor can reduce single osteotomy volume as far as possible in the operation process, and its result probably causes prosthesis and osteotomy face to match improperly, causes the bone problem of need secondary osteotomy. Multiple osteotomies can prolong the operation time and cause secondary injury to the patient. Therefore, the bone cutting device can complete proper bone cutting at one time, and is an important means for ensuring the operation quality.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need to provide a wrist joint osteotomy navigation device for accurately and rapidly performing the wrist joint osteotomy.

In one aspect, the present application provides a wrist osteotomy navigation device, comprising:

the positioning module comprises a first abutting surface, the first abutting surface is provided with a first positioning groove used for being matched with a lister tubercle of a radius, the positioning module is further provided with first positioning holes penetrating through two ends of the positioning module, and the first positioning holes are used for penetrating positioning needles so as to fix the positioning needles on the radius; and (c) a second step of,

the guide module, be used for with the positioning module cooperation, the guide module includes the second butt face, the second butt face be equipped with be used for with the last tubercle matched with second constant head tank of radius, the guide module still is equipped with and runs through the second locating hole of second butt face, the second locating hole is used for wearing to establish to fix the radius the pilot pin, the guide module still includes first spigot surface and second spigot surface, first spigot surface with the second spigot surface sets up relatively and all with second butt face looks is perpendicular, first spigot surface be used for with the osteotome butt in order to lead to radius side osteotomy, the second spigot surface be used for with the osteotome butt in order to lead to carpal side osteotomy.

Above-mentioned wrist joint cuts bone navigation head sets up through setting up on the first butt face of orientation module and be used for with the radius like the first locating groove of the matched with of the lister tubercle, through making the cell wall laminating radius like the lister tubercle of first locating groove, the rethread first locating hole on the orientation module can be with the location needle of location usefulness establish in the radius. Make the guide module can embolia in the pilot pin of keeping somewhere in the radius through the second locating hole in order to realize fixing a position, then lead to the direction of feed of osteotome through first direction and can realize cutting the bone to the radius side accuracy, rethread second direction leads to the direction of feed of osteotome and can realize cutting the bone to the carpal bone side accuracy, improved efficiency and the accuracy of cutting the bone to the wrist joint, avoided cutting the secondary injury that the patient caused many times. Simultaneously through set up on the second butt face at the guide module with the shape and the radius's lister tubercle assorted second constant head tank, when using, through the lister tubercle that makes the cell wall laminating radius of second constant head tank, the fixed action of pilot pin is gone up in the cooperation, can avoid cutting the displacement of in-process guide module or rotate, has improved the accuracy of cutting the bone.

The technical scheme of the application is further explained as follows:

in one embodiment, the guide module includes a first attaching portion and a first guide portion connected above the first attaching portion, the second abutting surface is located on a side of the first attaching portion away from the first guide portion, a first knife feeding groove is formed in one side of the first guide portion, the first guide surface is formed at the bottom of the first knife feeding groove, a second knife feeding groove is formed in the other side of the first guide portion, the second guide surface is formed at the bottom of the second knife feeding groove, and the second positioning hole penetrates through the first attaching portion and the first guide portion.

In one embodiment, the projection of the first guide portion along the extending direction of the second positioning hole covers the first attaching portion.

In one embodiment, the first attaching portion has a first side wall corresponding to the first guide surface and a second side wall corresponding to the second guide surface, the plane of the first guide surface is coplanar with the plane of the first side wall, and the plane of the second guide surface is coplanar with the plane of the second side wall.

In one embodiment, two side surfaces of the first guide part, which are perpendicular to the first guide surface and the second guide surface, are provided with first holding grooves for facilitating holding.

In one embodiment, the positioning module includes a first positioning portion and a first handheld portion connected above the first positioning portion, the first abutting surface is disposed on a side of the first positioning portion away from the first handheld portion, and the first positioning hole penetrates through the first positioning portion and the first handheld portion.

In one embodiment, the width of the first positioning part is larger than that of the first fitting part; and/or the length of the first positioning part is more than or equal to half of the width of the radius and less than or equal to the width of the radius; and/or the length of the first handheld part is greater than or equal to the length of the first positioning part.

In one embodiment, two opposite side surfaces of the first holding part are respectively provided with a second holding groove for facilitating holding.

In one embodiment, the positioning module is provided with at least two first positioning holes which are arranged at intervals; the number and the relative positions of the second positioning holes correspond to those of the first positioning holes one by one.

In one embodiment, the guide module is further provided with a carpal positioning hole for penetrating the positioning needle to fix the positioning needle to the carpal bone.

In another aspect, the present application further provides a wrist osteotomy navigation device, comprising:

the radius osteotomy module comprises a second positioning part, the second positioning part comprises a third abutting surface and a third guide surface which is adjacent to and perpendicular to the third abutting surface, the third abutting surface is provided with a third positioning groove used for being matched with a lister nodule of the radius, the third guide surface is used for being abutted with an osteotome, the second positioning part is further provided with a third positioning hole penetrating through the second positioning part, and the third positioning hole is used for penetrating through a positioning needle; and (c) a second step of,

the carpal osteotomy module comprises a third positioning portion, the third positioning portion comprises a fourth abutting surface and a fourth guide surface which is adjacent to and perpendicular to the fourth abutting surface, the fourth abutting surface is provided with a fourth positioning groove which is used for being matched with the surface of the carpal, the third guide surface is used for being abutted to a osteotome, the third positioning portion is further provided with a fourth positioning hole which penetrates through the third positioning portion, and the fourth positioning hole is used for penetrating through a positioning needle.

According to the wrist joint osteotomy navigation device, the third positioning groove matched with the lister nodule of the radius is formed in the third abutting surface of the radius osteotomy module, the groove wall of the third positioning groove is attached to the lister nodule of the radius to position the radius osteotomy module, and the positioning needle for positioning is inserted into the radius through the third positioning hole to fix the radius osteotomy module. And finally, the accurate osteotomy can be realized on the radius side by guiding the feed direction of the osteotomy through the third guide surface. Similarly, the fourth positioning groove matched with the back surface of the carpal bone is formed in the fourth abutting surface of the carpal bone osteotomy module, the groove wall of the fourth positioning groove is attached to the back surface of the carpal bone, so that the carpal bone osteotomy module can be positioned, and the positioning pin for positioning is inserted into the carpal bone through the fourth positioning hole, so that the carpal bone osteotomy module can be fixed. Finally, the fourth guide surface guides the feed direction of the osteotome to realize accurate osteotomy on the carpal bone side, so that the efficiency and the accuracy of the osteotomy on the wrist joint are improved, and secondary injury to the patient caused by multiple osteotomies is avoided.

In one embodiment, the radius osteotomy module further comprises a support portion connected with the second positioning portion, and the support portion and the second positioning portion jointly define a clamping space for clamping the radius.

In one embodiment, the radial osteotomy module further comprises a second hand-held part, the second hand-held part is connected with the second positioning part or the supporting part, and two opposite side surfaces of the hand-held part are respectively provided with a third holding groove.

In one embodiment, the supporting portion includes a connecting portion and a bending portion, the connecting portion is connected to the second positioning portion, the bending portion is in an L-shaped structure, the bending portion is connected to the connecting portion, and the second handheld portion is disposed between the connecting portion and the bending portion.

In one embodiment, the carpal tunnel osteotomy module further comprises an abutting portion, the abutting portion is connected with the third positioning portion, the abutting portion is provided with a fifth abutting surface perpendicular to the fourth abutting surface, the fifth abutting surface is provided with a fifth positioning groove matched with the distal end surface of the carpal bone, and the fifth positioning groove is communicated with the fourth positioning groove.

In one embodiment, the two opposite side surfaces of the third positioning part are respectively provided with a fourth holding groove.

In one embodiment, the second positioning portion is provided with at least two third positioning holes, and the at least two third positioning holes are arranged at intervals; and/or the third positioning part is provided with at least two fourth positioning holes which are arranged at intervals.

In one embodiment, the length of the second positioning portion is greater than or equal to half of the width of the radius and less than or equal to the width of the radius; and/or the length of the third positioning part is greater than or equal to half of the width of the carpal bone and less than or equal to the width of the carpal bone.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a positioning module according to an embodiment;

FIG. 2 is a front view of the positioning module shown in FIG. 1;

FIG. 3 is a side view of the positioning module shown in FIG. 1;

FIG. 4 is a top view of the positioning module shown in FIG. 1;

FIG. 5 is a schematic structural diagram of a guide module according to an embodiment;

FIG. 6 is a rear view of the guide module shown in FIG. 5;

FIG. 7 is a top view of the guide module shown in FIG. 5;

FIG. 8 is a side view of the guide module shown in FIG. 5;

FIG. 9 is a schematic view of an embodiment of a radius osteotomy module;

FIG. 10 is a side view of the radial osteotomy module illustrated in FIG. 9;

FIG. 11 is a front view of the radial osteotomy module illustrated in FIG. 9;

FIG. 12 is a top view of the radial osteotomy module illustrated in FIG. 9;

FIG. 13 is a schematic structural view of a carpal osteotomy module in accordance with an embodiment;

FIG. 14 is a bottom view of the radial osteotomy module illustrated in FIG. 13;

figure 15 isbase:Sub>A cross-sectional view of the radial osteotomy module illustrated in figure 14 at sectionbase:Sub>A-base:Sub>A.

Description of the reference numerals:

10. a positioning module; 11. a first positioning portion; 111. a first abutting surface; 112. a first positioning groove; 12. a first hand-held section; 121. a second holding groove; 13. a first positioning hole; 20. a guide module; 21. a first bonding portion; 211. a second abutting surface; 212. a second positioning groove; 213. a first side wall; 214. a second side wall; 22. a first guide portion; 221. a first guide surface; 222. a second guide surface; 223. a first knife feeding groove; 224. a second knife feeding groove; 225. a first holding recess; 231. a second positioning hole; 232. a carpal positioning hole; 30. a radius osteotomy module; 31. a second positioning portion; 311. a third abutting surface; 312. a third guide surface; 313. a third positioning groove; 314. a third positioning hole; 32. a second hand-held portion; 321. a third holding groove; 33. a support portion; 332. a connecting portion; 331. a bent portion; 333. a clamping space; 40. a carpal osteotomy module; 41. a third positioning part; 411. a fourth abutting surface; 412. a fourth positioning groove; 413. a fourth guide surface; 414. a fourth positioning hole; 415. a fourth holding groove; 42. an abutting portion; 421. a fifth abutting surface; 422. a fifth positioning groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

An embodiment of the application provides a wrist joint osteotomy navigation device, which is used for positioning and guiding an osteotome when the wrist joint is osteotomy. Further, the wrist osteotomy navigation device of an embodiment comprises a positioning module 10 and a guiding module 20. Referring to fig. 1 to 4, the positioning module 10 includes a first abutting surface 111, the first abutting surface 111 is provided with a first positioning groove 112 for matching with the lister tubercle of the radius, for example, the shape of the first positioning groove 112 matches with the shape of the lister tubercle of the radius, so that the groove wall of the first positioning groove 112 can fit with the lister tubercle of the radius, thereby realizing the positioning of the positioning module 10. Where the Lister nodule refers to a small bony prominence on the distal dorsal aspect of the radius. Specifically, the shape data of the radius cister tubercle of a large number of patients can be collected, the shape compatible with the radius cister tubercle of most patients is designed, or a plurality of models can be designed for being compatible with the shapes of the radius cister tubercles of different patients, and preferably, a personalized customization scheme is adopted, namely, after the radial shape data of the patients are extracted preoperatively by medical imaging methods such as CT, MRI and the like, the shape of the positioning module 10 conforming to the bone shape of the patients is made by computer software, and then the positioning module 10 matched with the patients is made by a 3D printing method.

Further, the positioning module 10 is further provided with a first positioning hole 13 penetrating through the first abutting surface 111, and the first positioning hole 13 is used for penetrating a positioning needle to fix the positioning needle to the radius.

Referring to fig. 5 to 8, the guide module 20 is configured to cooperate with the positioning module 10, specifically, the guide module 20 includes a second abutting surface 211, the second abutting surface 211 is provided with a second positioning groove 212 configured to cooperate with a lister tubercle of a radius, the guide module 20 is further provided with a second positioning hole 231 penetrating through the second abutting surface 211, the second positioning hole 231 is configured to penetrate through a positioning pin fixed on the radius, the guide module 20 further includes a first guide surface 221 and a second guide surface 222, the first guide surface 221 and the second guide surface 222 are disposed opposite to each other and are perpendicular to the second abutting surface 211, the first guide surface 221 is configured to abut against a osteotome to guide a carpal osteotome, and the second guide surface 222 is configured to abut against the osteotome to guide a radial osteotome.

Specifically, the wrist osteotomy navigation device of the present embodiment is applicable to a surgical plan without disassembling the radius and the wrist. In this embodiment, both the positioning module 10 and the guiding module 20 can be formed by 3D printing, and both the first positioning groove 112 and the second positioning groove 212 are formed by profiling design, so that the shape of the first positioning groove 112 and the shape of the second positioning groove 212 are both matched with the outer contour shape of the lister tubercle of radius. Further, the positioning pin may be a k-wire. The osteotome may be an oscillating saw.

Further, the process of osteotomy of the wrist joint by using the wrist joint osteotomy navigation device comprises the following steps:

and S110, the doctor peels off soft tissues of the wrist joint of the patient to expose the wrist joint of the patient without separating the radius and the wrist bone of the patient.

S120: the first abutting surface 111 of the positioning module 10 abuts against the radius, so that the groove wall of the first positioning groove is attached to the lister tubercle of the radius, and the front end edge of the first positioning groove is aligned with the far-end articular surface of the radius to complete positioning.

S130: the locating pin is inserted into the first locating hole 13 of the locating module 10 and is driven into the radius.

S140: taking down the positioning module 10 and remaining the positioning needle in the radius;

s150: the guide module 20 is sleeved in the positioning needle left in the radius through the second positioning hole 231, and the groove wall of the second positioning groove of the guide module 20 is made to fit the lister tubercle of the radius.

S160: the osteotome is attached to the first guide surface 221 of the guide module 20, and is fed along the first guide surface 221 to perform osteotomy on the radius side, and after the osteotomy on the radius side is completed, the osteotome is attached to the second guide surface 222 of the guide module 20, and is fed along the second guide surface 222 to perform osteotomy on the carpal side.

According to the wrist joint osteotomy navigation device, the first abutting surface 111 of the positioning module 10 is provided with the first positioning groove 112 matched with the lister tubercle of the radius in shape, the groove wall of the first positioning groove 112 is made to be attached to the lister tubercle of the radius, and then the first positioning hole 13 in the positioning module 10 is used for inserting the positioning needle for positioning into the radius. Make guide module 20 can embolia in the pilot pin of keeping somewhere in the radius through second locating hole 231 in order to realize the location, then lead to the direction of feed of osteotome through first spigot surface 221 and can realize cutting the bone to the radius side accuracy, rethread second spigot surface 222 leads to the direction of feed of osteotome and can realize cutting the bone to the carpal bone side accuracy, the efficiency and the accuracy of wrist joint osteotomy have been improved, the secondary injury that the patient caused has been avoided many times to cut the bone. Meanwhile, the second positioning groove 212 matched with the lister nodule of the radius in shape is arranged on the second abutting surface 211 of the guide module 20, when the guide module is used, the groove wall of the second positioning groove 212 is attached to the lister nodule of the radius, and the guide module 20 can be prevented from shifting or rotating in the osteotomy process under the fixing action of the positioning needle, so that the osteotomy accuracy is further improved. Simultaneously, the wrist joint osteotomy navigation head of this embodiment once fixes a position and can be simultaneously to radius side and carpal bone side osteotomy, need not to disassemble wrist joint, has saved the operation time.

Further, referring to fig. 5 to 8, the guide module 20 includes a first fitting portion 21 and a first guide portion 22 connected above the first fitting portion 21, the first fitting portion 21 is used for fitting the radius, and the second abutting surface 211 is located on a side of the first fitting portion 21 away from the first guide portion 22. The first guide portion 22 is used for guiding the osteotome, a first incision feeding groove 223 is formed in one side of the first guide portion 22, a first guide surface 221 is formed at the groove bottom of the first incision feeding groove 223, a second incision feeding groove 224 is formed in the other side of the first guide portion 22, a second guide surface 222 is formed at the groove bottom of the second incision feeding groove 224, and specifically, the first incision feeding groove 223 is formed in one side, close to the radius, of the first guide portion 22 in the connecting direction of the radius and the carpal bone. The second incision 224 is formed on a side of the first guide portion 22 near the carpal bone in the radial to carpal joint direction. The first knife feeding groove 223 and the second knife feeding groove 224 can limit the osteotome, so that the osteotome is prevented from swinging left and right in the osteotomy process, and the osteotomy accuracy is further improved.

Further, the second positioning hole 231 penetrates through the first attaching portion 21 and the first guiding portion 22, so that the positioning pin can be easily inserted into the second positioning hole 231 to position the guiding module 20. It should be understood that, in other embodiments, by controlling the length of the positioning pin, the second positioning hole 231 may not penetrate through the first guiding portion 22, and specifically, by shortening the length of the positioning pin exposed outside the radius, the second positioning hole 231 may only penetrate through the second abutting surface 211 of the first attaching portion 21 without penetrating through the first guiding portion 22.

Specifically, the projection of the first guide portion 22 in the extending direction of the second positioning hole 231 covers the first attaching portion 21, that is, the vertical distance between the first guide surface 221 and the second guide surface 222 is greater than or equal to the width of the first attaching portion 21, so as to avoid interference between the osteotome and the first attaching portion 21 when the osteotome is fed along the first guide surface 221 or along the second guide surface 222. Specifically, the first fitting part 21 has a first sidewall 213 corresponding to the first guide surface 221 and a second sidewall 214 corresponding to the second guide surface 222, and the width of the first fitting part 21 refers to a distance between the first sidewall 213 and the second sidewall 214. Specifically, the vertical distance W1 between the first guide surface 221 and the second guide surface 222 is equal to the sum of the osteotomy amount of the radius and the osteotomy amount of the carpal bone, and the width W2 of the first fitting portion 21 is not greater than W1.

Further, in a preferred embodiment, the plane of the first guiding surface 221 is coplanar with the plane of the first sidewall 213, and the plane of the second guiding surface 222 is coplanar with the plane of the second sidewall 214, so that when the osteotome is fed along the first guiding surface 221 and moves to the first fitting portion 21, the osteotome can fit the first sidewall 213, and the first sidewall 213 can also guide the feeding direction of the osteotome, thereby preventing the osteotome from shaking during feeding, and further improving the osteotomy accuracy. Similarly, when the osteotome is fed along the second guiding surface 222 and moves to the first fitting portion 21, the osteotome can be fitted to the second sidewall 214, and the second sidewall 214 can also guide the feeding direction of the osteotome, so that the osteotome is prevented from shaking in the feeding process, and the osteotome accuracy is further improved.

Further, during surgery, the operator may hold the first guide 22 to avoid shifting or rotating the guide module 20 during surgery. Preferably, the first guide portion 22 is further provided with a first holding groove 225 for facilitating holding on two side surfaces perpendicular to the first guide surface 221 and the second guide surface 222, and the first holding groove 225 can increase the holding comfort of an operator and prevent the operator from slipping. Further, the first holding recess 225 is a circular arc groove having a diameter larger than that of the thumb pad and that of the index finger pad, so that the operator can hold the first guide 22 with the thumb and the index finger.

Further, referring to fig. 1 to 4, in the present embodiment, the positioning module 10 includes a first positioning portion 11 and a first holding portion 12 connected above the first positioning portion 11, the first abutting surface 111 is disposed on a side of the first positioning portion 11 away from the first holding portion 12, and the first positioning hole 13 penetrates through the first positioning portion 11 and the first holding portion 12. The first positioning portion 11 is used for abutting against the radius, and the first holding portion 12 is used for holding an operator for facilitating the operation. Preferably, the opposite two side surfaces of the first holding portion 12 are provided with second holding grooves 121 for facilitating holding.

Further, in the present embodiment, the width W3 of the first positioning portion 11 is larger than the width W2 of the first bonded portion 21. The width W3 of the first positioning portion 11 refers to a dimension of the first positioning portion 11 in a direction along a connection between a radius and a wrist. Specifically, as described above, in order to avoid interference between the osteotome and the first fitting portion 21 during osteotomy, the width W2 of the first fitting portion 21 needs to be smaller than the distance W1 between the first guide surface 221 and the second guide surface 222, and the distance W1 between the first guide surface 221 and the second guide surface 222 depends on the osteotomy amount of the wrist joint. In order to guarantee patient's bone reserve volume, wrist joint's osteotomy volume can not be very big, consequently the width W2 of first laminating portion 21 need design for a short time, the area of contact that leads to first laminating portion 21 and radius is less, if directly fix a position through first laminating portion 21, can increase the inaccurate risk in location, and this kind of risk is enlarged when the pilot pin is squeezed into to handheld first guide part 22 of operator, arouse the inaccurate problem in location easily, and then lead to unable accurate osteotomy. And this application fixes a position through earlier using orientation module 10, rethread orientation module 20 cuts the bone direction and can perfectly solve above-mentioned problem, specifically, orientation module 10's first location portion 11's width is not restricted by the bone volume of cutting, consequently can get first location portion 11's design great, can set up the width of first location portion 11 into the width that is greater than first laminating portion 21, thereby the area of contact of first location portion 11 with the radius has been increased, when the operator is handheld first handheld portion 12 and is squeezed into the pilot pin in first locating hole 13, can effectively avoid orientation module 10 to rock, and then increase the accuracy of location, and then guarantee the accuracy of follow-up bone cutting.

Further, the length L1 of the first positioning portion 11 is greater than or equal to half of the width of the radius and less than or equal to the width of the radius. The length of the first locator 11 refers to a dimension in a direction perpendicular to a direction in which the radius is coupled to the carpal bone. Specifically, if the length of the first positioning portion 11 is less than half of the width of the radius, the contact surface between the first positioning portion 11 and the radius is too small, which results in unstable positioning; if the length of the first positioning portion 11 is greater than the width of the radius, although the contact area can be increased, the portion of the two ends of the first positioning portion 11 exceeding the radius is not supported, and the torque is easily generated when the positioning pin is driven into the handheld positioning module 10, so that the first positioning portion 11 is not in contact with the radius stably, and further, the positioning is not accurate. Therefore, the length of the first positioning portion 11 is configured to be greater than or equal to half of the width of the radius and less than or equal to the width of the radius, so that the contact surface between the first positioning portion 11 and the radius is ensured to be large enough, the generation of torque is avoided, and the positioning accuracy is improved. Further, the length L2 of the first hand-held portion 12 is greater than or equal to the length L1 of the first positioning portion 11. Preferably, L2 ≈ L1+5mm; and the width W4 of the first hand-held portion 12 ≈ W3+5mm.

Further, referring to fig. 1 and 5, the positioning module 10 is provided with at least two first positioning holes 13, and the at least two first positioning holes 13 are arranged at intervals. For example, in the present embodiment, the positioning module 10 is provided with two first positioning holes 13 arranged at intervals. The positioning module 10 is provided with at least two first positioning holes 13, so that the positioning accuracy is improved. Correspondingly, the number and relative positions of the second positioning holes 231 correspond to those of the first positioning holes 13 one to one. Specifically, in the present embodiment, the guide module 20 is provided with two second positioning holes 231 arranged at intervals, and the relative position between the two second positioning holes 231 corresponds to the relative position of the two first positioning holes 13, thereby ensuring that the positioning needle driven into the radius through the first positioning holes 13 can be accurately inserted into the second positioning holes 231.

Further, referring to fig. 7, the guiding module 20 is further formed with a carpal positioning hole 232, and the carpal positioning hole 232 is used for penetrating the positioning pin to fix the positioning pin to the carpal bone. Specifically, after the positioning pin to be left in the radius is inserted into the second positioning hole 231 to position the guide module 20, an additional positioning pin is inserted into the carpal positioning hole 232 and driven into the carpal bone, so that the connection stability of the guide module 20 and the wrist joint is improved, the guide module 20 is further prevented from being displaced or rotated during the osteotomy process, and the osteotomy accuracy is further improved.

Referring to fig. 9 to 15, fig. 9 to 15 illustrate a wrist osteotomy navigation device according to another embodiment of the present application. Unlike the wrist osteotomy navigation device of the embodiment shown in fig. 1 to 8, the wrist osteotomy navigation device of the embodiment shown in fig. 9 to 15 is applicable to a surgical plan for surgically disassembling the wrist of a patient into an independent radius and wrist and performing independent osteotomy of the radius and wrist respectively by using the osteotomy module. Specifically, the wrist joint osteotomy navigation device of another embodiment includes a radius osteotomy module 30 and a wrist osteotomy module 40, referring to fig. 9 to 12, the radius osteotomy module 30 includes a second positioning portion 31, the second positioning portion 31 includes a third abutting surface 311 and a third guiding surface 312 adjacent to and perpendicular to the third abutting surface 311, the third abutting surface 311 is provided with a third positioning slot 313 matching with the lister tubercle of the radius in shape, the third guiding surface 312 is used for abutting against the osteotome, the second positioning portion 31 is further provided with a third positioning hole 314 penetrating through the second positioning portion 31, and the third positioning hole 314 is used for penetrating a positioning pin. Referring to fig. 13 to 15, the carpal osteotomy module 40 includes a third positioning portion 41, the third positioning portion 41 includes a fourth abutting surface 411 and a fourth guiding surface 413 adjacent to and perpendicular to the fourth abutting surface 411, the fourth abutting surface 411 is provided with a fourth positioning slot 412 with a shape matched with the back surface of the carpal bone, the fourth guiding surface 413 is used for abutting against the osteotome, the third positioning portion 41 is further provided with a fourth positioning hole 414 penetrating through the third positioning portion 41, and the fourth positioning hole 414 is used for passing a positioning pin.

S210: the surgeon dissects the soft tissue of the wrist joint of the patient to expose the wrist joint of the patient and then separates the radius and carpal bones of the patient.

S220: the third abutting surface 311 of the radius osteotomy module 30 abuts against the radius, so that the groove wall of the third positioning groove 313 is attached to the lister tuberosity of the radius to complete the positioning.

S230: the positioning pin is inserted into the third positioning hole 314 of the radius osteotomy module 30 and is driven into the radius to ensure the stability of the radius osteotomy module 30 during the radius osteotomy.

S240: the osteotome is fitted to the third guide surface 312 of the radial osteotomy module 30, and the osteotome is advanced along the third guide surface 312 to osteotomy the radial side.

S250: the fourth abutting surface 411 of the carpal bone cutting module 40 abuts against the carpal bone, so that the groove wall of the fourth positioning groove 412 is attached to the back side of the carpal bone to complete the positioning.

S260: the positioning pin is inserted into the fourth positioning hole 414 of the carpal osteotomy module 40 and driven into the carpal bone to ensure the stability of the radial osteotomy module 30 during carpal osteotomy.

S270: the osteotome is fitted to the fourth guide surface 413 of the carpal osteotomy module 40 and the osteotome is advanced along the fourth guide surface to perform an osteotomy on the carpal side.

According to the wrist joint osteotomy navigation device, the third positioning groove 313 matched with the lister nodule of the radius in shape is arranged on the third abutting surface 311 of the radius osteotomy module 30, the groove wall of the third positioning groove 313 is attached to the lister nodule of the radius to realize the positioning of the radius osteotomy module 30, and the positioning needle for positioning is inserted into the radius through the third positioning hole 314 to realize the fixation of the radius osteotomy module 30. Finally, the accurate osteotomy can be realized on the radius side by guiding the feed direction of the osteotomy through the third guide surface 312. Similarly, the fourth positioning groove 412 with a shape matched with the back surface of the carpal bone is arranged on the fourth abutting surface 411 of the carpal bone cutting module 40, the groove wall of the fourth positioning groove 412 is attached to the back surface of the carpal bone to position the carpal bone cutting module 40, and the positioning needle for positioning is inserted into the carpal bone through the fourth positioning hole 414 to fix the carpal bone cutting module 40. Finally, the accurate osteotomy can be performed on the carpal bone side by guiding the feed direction of the osteotomy through the fourth guide surface 413, so that the efficiency and the accuracy of the carpal joint osteotomy are improved, and the secondary injury to the patient caused by multiple osteotomies is avoided. In addition, the wrist joint cuts bone navigation head of this embodiment cuts the bone to the radius through radius cutting module 30 earlier, and the rethread wrist bone cuts bone module 40 and cuts the bone to the wrist bone, and the two cuts the bone and can independently accomplish, has avoided radius side to cut bone error and wrist bone side to cut bone error and influence each other, has avoided the error accumulation, further improves and cuts the bone accuracy.

Further, referring to fig. 9 to 12, the radius osteotomy module 30 further includes a support portion 33, the support portion 33 is connected with the second positioning portion 31, and the support portion 33 and the second positioning portion 31 together define a clamping space 333 for clamping the radius. Specifically, referring to fig. 10, the supporting portion 33 includes a connecting portion 332 and a bending portion 331, the connecting portion 332 is connected with the second positioning portion 31, the bending portion 331 has an "L" shape, and the bending portion 331 is connected with the connecting portion 332, so that the supporting portion 33 and the second positioning portion 31 jointly define a clamping space 333 for clamping the radius. When the positioning device is used, the distal end of the radius is clamped into the clamping space 333, so that the second positioning part 31 is matched with the supporting part 33 and fixed on the lister nodule of the radius from two sides of the radius, and the positioning accuracy is improved.

Further, the radius osteotomy module 30 further includes a second handheld portion 32, the second handheld portion 32 is connected to the second positioning portion 31 or the supporting portion 33, and two opposite side surfaces of the handheld portion are respectively provided with a third holding groove 321. Preferably, in the present embodiment, the second handheld portion 32 is connected to the supporting portion 33, and particularly, disposed between the connecting portion 332 and the bending portion 331, that is, connected to the connecting portion 332 and the bending portion 331 respectively, so as to facilitate holding during operation.

Further, the second positioning portion 31 is provided with at least two third positioning holes 314, and the at least two third positioning holes 314 are arranged at intervals. For example, in the present embodiment, the second positioning portion 31 is provided with two spaced third positioning holes 314. The second positioning portion 31 is provided with at least two third positioning holes 314, so that the positioning accuracy can be improved, and the radius osteotomy module 30 can be prevented from rotating in the using process after a positioning pin is inserted into each third positioning hole 314.

Further, the length of the second positioning portion 31 is greater than or equal to half of the width of the radius and less than or equal to the width of the radius. Wherein the length of the second positioning portion 31 refers to the dimension of the second positioning portion 31 in the direction perpendicular to the connection direction of the radius and the wrist. Specifically, if the length of the second positioning portion 31 is less than half of the width of the radius, the contact surface of the second positioning portion 31 with the radius is too small, resulting in unstable positioning; if the length of the second positioning portion 31 is greater than the width of the radius, although the contact area can be increased, the portion of the two ends of the second positioning portion 31 beyond the radius is not supported, and a torque is easily generated when the second hand-holding portion 32 is held to drive in a positioning needle, so that the second positioning portion 31 is not stably contacted with the radius, and further, the positioning is not accurate. Therefore, configuring the length of the second positioning portion 31 to be greater than or equal to half of the width of the radius and less than or equal to the width of the radius can avoid generating torque while ensuring that the contact surface of the second positioning portion 31 and the radius is sufficiently large, and improves positioning accuracy. Further, the width of the second positioning portion 31 is the radius osteotomy amount minus the thickness of the osteotome.

Further, referring to fig. 13 to 15, the carpal osteotomy module 40 further comprises an abutting portion 42, the abutting portion 42 is connected with the third positioning portion 41, the abutting portion 42 is provided with a fifth abutting surface 421 perpendicular to the fourth abutting surface 411, the fifth abutting surface 421 is provided with a fifth positioning groove 422 matching with the distal end surface of the carpal bone, and the fifth positioning groove 422 is communicated with the fourth positioning groove 412. Thereby when the dorsal part of the cell wall laminating carpal of fourth constant head tank 412, make the cell wall laminating distal end face of carpal of fifth constant head tank 422, thereby further improve the reliability of carpal osteotomy module 40 location, and because fifth butt face 421 is mutually perpendicular with fourth butt face 411, as first butt face 111 butt in the back of carpal, fifth butt face 421 butt behind the distal end face of carpal, can effectively avoid carpal osteotomy module 40 to take place to rotate when using, improve the accuracy nature of cutting the carpal.

Furthermore, the opposite two side surfaces of the third positioning portion 41 are both provided with fourth holding grooves 415. The fourth holding groove 415 can facilitate the operator to hold the third positioning portion 41, thereby facilitating the driving of the positioning nail and the osteotomy.

Further, the third positioning portion 41 is provided with at least two fourth positioning holes 414, and the at least two fourth positioning holes 414 are arranged at intervals. For example, in the present embodiment, the third positioning portion 41 is provided with two spaced fourth positioning holes 414. The at least two fourth positioning holes 414 are formed in the carpal bone osteotomy module 40, so that the positioning accuracy can be improved, and the rotation of the carpal bone osteotomy module 40 in the using process can be avoided after a positioning pin is inserted into each fourth positioning hole 414.

Further, the length of the third positioning portion 41 is greater than or equal to half of the width of the carpal bone and less than or equal to the width of the carpal bone. Wherein the length of the third positioning part 41 refers to the dimension of the third positioning part 41 along the direction perpendicular to the connection direction of the radius and the wrist. Specifically, if the length of the third positioning portion 41 is less than half of the width of the carpal bone, the contact surface of the second positioning portion 31 with the carpal bone is too small, resulting in unstable positioning; if the length of the third positioning portion 41 is greater than the width of the carpal bone, although the contact area can be increased, the portion of the two ends of the second positioning portion 31 beyond the carpal bone is not supported, and the torque is easily generated when the positioning needle is driven into the third positioning portion 41 by holding the third positioning portion 41 by hand, so that the third positioning portion 41 is not stably contacted with the carpal bone, and further the positioning is not accurate. Therefore, the length of the third positioning portion 41 is configured to be greater than or equal to half of the width of the carpal bone and less than or equal to the width of the carpal bone, so that the contact surface between the third positioning portion 41 and the carpal bone can be ensured to be large enough, the generation of torque can be avoided, and the positioning accuracy is improved. Further, the width of the third positioning part 41 is the amount of the carpal osteotomy minus the thickness of the osteotome.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of 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, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (18)

1. A wrist osteotomy navigation device, comprising:

the positioning module comprises a first abutting surface, the first abutting surface is provided with a first positioning groove used for being matched with a lister tubercle of a radius, the positioning module is further provided with first positioning holes penetrating through two ends of the positioning module, and the first positioning holes are used for penetrating positioning needles so as to fix the positioning needles on the radius; and (c) a second step of,

the guide module, be used for with the positioning module cooperation, the guide module includes the second butt face, the second butt face be equipped with be used for with the last tubercle matched with second constant head tank of radius, the guide module still is equipped with and runs through the second locating hole of second butt face, the second locating hole is used for wearing to establish to fix the radius the pilot pin, the guide module still includes first spigot surface and second spigot surface, first spigot surface with the second spigot surface sets up relatively and all with second butt face looks is perpendicular, first spigot surface be used for with the osteotome butt in order to lead to radius side osteotomy, the second spigot surface be used for with the osteotome butt in order to lead to carpal side osteotomy.

2. The wrist osteotomy navigation device of claim 1, wherein the guide module includes a first fitting portion and a first guide portion connected above the first fitting portion, the second abutting surface is located on a side of the first fitting portion away from the first guide portion, a first incision slot is formed on one side of the first guide portion, the first guide surface is formed at a slot bottom of the first incision slot, a second incision slot is formed on the other side of the first guide portion, the second guide surface is formed at a slot bottom of the second incision slot, and the second positioning hole penetrates through the first fitting portion and the first guide portion.

3. The wrist osteotomy navigation device of claim 2, wherein a projection of said first guide portion along an extending direction of said second positioning hole covers said first attachment portion.

4. The wrist osteotomy navigation device of claim 3, wherein said first abutment has a first sidewall corresponding to a first guide surface and a second sidewall corresponding to said second guide surface, said first guide surface lying in a plane coplanar with a plane of said first sidewall, said second guide surface lying in a plane coplanar with a plane of said second sidewall.

5. The wrist osteotomy navigation device of claim 2, wherein two side surfaces of the first guide portion perpendicular to the first guide surface and the second guide surface are each provided with a first holding groove for facilitating holding.

6. The wrist osteotomy navigation device of claim 2, wherein the positioning module includes a first positioning portion and a first hand-held portion connected above the first positioning portion, the first abutment surface is provided on a side of the first positioning portion away from the first hand-held portion, and the first positioning hole extends through the first positioning portion and the first hand-held portion.

7. The wrist osteotomy navigation device of claim 6, wherein a width of said first detent is greater than a width of said first abutment; and/or the length of the first positioning part is more than or equal to half of the width of the radius and less than or equal to the width of the radius; and/or the length of the first handheld part is greater than or equal to the length of the first positioning part.

8. The wrist osteotomy navigation device of claim 6, wherein said first hand-held portion has second grip recesses on opposite sides thereof for facilitating gripping.

9. The wrist osteotomy navigation device of claim 1, wherein said positioning module is provided with at least two first positioning holes, said at least two first positioning holes being spaced apart; the number and the relative positions of the second positioning holes correspond to those of the first positioning holes one to one.

10. The wrist osteotomy guiding device of claim 1, wherein the guiding module further defines a carpal locating hole for passing the locating pin therethrough to secure the locating pin to the carpal bone.

11. A wrist osteotomy navigation device, comprising:

the radius osteotomy module comprises a second positioning part, the second positioning part comprises a third abutting surface and a third guide surface which is adjacent to and perpendicular to the third abutting surface, the third abutting surface is provided with a third positioning groove which is used for being matched with a lister nodule of the radius, the third guide surface is used for being abutted with a osteotome, the second positioning part is further provided with a third positioning hole which penetrates through the second positioning part, and the third positioning hole is used for penetrating a positioning needle; and (c) a second step of,

the carpal osteotomy module comprises a third positioning portion, the third positioning portion comprises a fourth abutting surface and a fourth guide surface which is abutted to the fourth abutting surface and perpendicular to the fourth abutting surface, the fourth abutting surface is provided with a fourth positioning groove used for being matched with the surface of the carpal, the third guide surface is used for being abutted to the osteotome, the third positioning portion is further provided with a fourth positioning hole penetrating through the third positioning portion, and the fourth positioning hole is used for penetrating through a positioning needle.

12. The wrist osteotomy navigation device of claim 11, wherein said radial osteotomy module further comprises a support portion coupled to said second positioning portion and defining a clamping space for clamping said radius in cooperation with said second positioning portion.

13. The wrist osteotomy navigation device of claim 12, wherein said radial osteotomy module further comprises a second hand-held portion, said second hand-held portion being connected to said second positioning portion or said support portion, said hand-held portion having third holding grooves formed on opposite sides thereof.

14. The wrist joint osteotomy navigation device of claim 13, wherein the support portion comprises a connecting portion and a bending portion, the connecting portion is connected to the second positioning portion, the bending portion is L-shaped, the bending portion is connected to the connecting portion, and the second handheld portion is disposed between the connecting portion and the bending portion.

15. The wrist osteotomy navigation device of claim 11, further comprising an abutment connected to said third positioning portion, said abutment having a fifth abutment surface perpendicular to said fourth abutment surface, said fifth abutment surface having a fifth detent matching a distal surface of said carpal bone, and said fifth detent in communication with said fourth detent.

16. The wrist joint osteotomy navigation device of claim 11, wherein both opposite side surfaces of the third positioning portion are provided with fourth holding grooves.

17. The wrist osteotomy navigation device of claim 11, wherein said second positioning portion defines at least two third positioning holes, said at least two third positioning holes being spaced apart from each other; and/or the third positioning part is provided with at least two fourth positioning holes which are arranged at intervals.

18. The wrist osteotomy navigation device of claim 11, wherein a length of said second positioning portion is greater than or equal to one-half a width of said radius bone and less than or equal to said width of said radius bone; and/or the length of the third positioning part is greater than or equal to half of the width of the carpal bone and less than or equal to the width of the carpal bone.

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