CN116687504A

CN116687504A - Wrist Osteotomy Navigation Device

Info

Publication number: CN116687504A
Application number: CN202210175429.9A
Authority: CN
Inventors: 黄有军; 陈炳泉; 周思远; 孙延东
Original assignee: Suzhou Weichuang Touched Funeng Medical Technology Co ltd
Current assignee: Suzhou Weichuang Touched Funeng Medical Technology Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2023-09-05

Abstract

The invention relates to a wrist joint osteotomy navigation device, which comprises a positioning module and a guiding module, wherein the positioning module comprises a first abutting surface, the first abutting surface is provided with a first positioning groove matched with a Lister node of a radius, the positioning module is also provided with a first positioning hole penetrating through the first abutting surface, and the first positioning hole is used for penetrating a positioning needle to fix the positioning needle to the radius. The guide module comprises a second abutting surface, the second abutting surface is provided with a second positioning groove matched with a Lister tuberosity of radius, the guide module is further provided with a second positioning hole penetrating through the second abutting surface, the guide module further comprises a first guide surface and a second guide surface, and the first guide surface and the second guide surface are oppositely arranged and are perpendicular to the second abutting surface. The wrist joint osteotomy navigation device can accurately and rapidly osteotomy the wrist joint.

Description

Wrist osteotomy navigation device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a wrist joint navigation device.

Background

The wrist joint is one of the most important joints of a human body, and is easily damaged by diseases such as traumatic, degenerative and rheumatoid arthritis, so that serious pain or limited movement of patients is caused. With the progress of medicine, the full wrist replacement has been increasingly applied to the treatment of wrist diseases, and the full wrist replacement prosthesis adopted by the method has the functions of partial palmar flexion, dorsiflexion, radial deviation and ulnar deviation of the wrist joint reserved while eliminating pain.

In the course of wrist surgery, it is necessary to osteotomy the radial side and the carpal side in order to implant a wrist prosthesis. The traditional osteotomy operation is carried out by doctors according to experience, the operation difficulty is high, in order to preserve the bone mass of patients, the doctor can reduce the single osteotomy mass as much as possible in the operation process, and as a result, the false body and the osteotomy face can be improperly matched, so that the problem of secondary osteotomy is caused. Multiple osteotomies can extend the procedure time and cause secondary injury to the patient. Therefore, the method can complete proper osteotomy at one time and quickly, and is an important means for ensuring the surgical quality.

Disclosure of Invention

Based on this, it is necessary to provide a wrist osteotomy navigation device for solving the problem of how to perform accurate and rapid osteotomy on the wrist.

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

the positioning module comprises a first abutting surface, wherein the first abutting surface is provided with a first positioning groove matched with a master tuberosity of a radius, the positioning module is also provided with first positioning holes penetrating through two ends of the positioning module, and the first positioning holes are used for penetrating a positioning needle to fix the positioning needle to the radius; the method comprises the steps of,

The guiding module is used for being matched with the positioning module, the guiding module comprises a second abutting surface, the second abutting surface is provided with a second positioning groove used for being matched with a Lister tuberosity of the radius, the guiding module is further provided with a second positioning hole penetrating through the second abutting surface, the second positioning hole is used for being penetrated and fixed with the positioning needle of the radius, the guiding module further comprises a first guiding surface and a second guiding surface, the first guiding surface and the second guiding surface are oppositely arranged and are perpendicular to the second abutting surface, the first guiding surface is used for being abutted with an osteotome to guide the osteotome on the side of the radius, and the second guiding surface is used for being abutted with the osteotome to guide the osteotome on the side of the wrist.

According to the wrist joint osteotomy navigation device, the first abutting surface of the positioning module is provided with the first positioning groove matched with the Lister nodule of the radius, the groove wall of the first positioning groove is attached to the Lister nodule of the radius, and the positioning needle for positioning can be inserted into the radius through the first positioning hole in the positioning module. The guiding module can be sleeved into the positioning needle reserved in the radius through the second positioning hole to realize positioning, then the accurate osteotomy on the radius side can be realized by guiding the feeding direction of the osteotomy knife through the first guiding surface, and the accurate osteotomy on the wrist side can be realized by guiding the feeding direction of the osteotomy knife through the second guiding surface, so that the efficiency and accuracy of osteotomy on the wrist joint are improved, and the secondary injury to a patient caused by repeated osteotomy is avoided. Meanwhile, the second positioning groove matched with the Lister nodule of the radius in shape is formed in the second abutting surface of the guide module, and when the guide module is used, the groove wall of the second positioning groove is attached to the Lister nodule of the radius and is matched with the fixing function of the positioning needle, so that the guide module can be prevented from shifting or rotating in the osteotomy process, and the osteotomy accuracy is improved.

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

in one embodiment, the guiding module comprises a first attaching part and a first guiding part connected to the upper side of the first attaching part, the second abutting surface is located on one side of the first attaching part away from the first guiding part, a first feed groove is formed on one side of the first guiding part, a second feed groove is formed on the other side of the first guiding part, a second guiding surface is formed on the bottom of the second feed groove, and the second positioning hole penetrates through the first attaching part and the first guiding part.

In one embodiment, a 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 guiding surface and a second side wall corresponding to the second guiding surface, where a plane of the first guiding surface is coplanar with a plane of the first side wall, and a plane of the second guiding surface is coplanar with a plane of the second side wall.

In one embodiment, two lateral sides of the first guiding part perpendicular to the first guiding surface and the second guiding surface are respectively provided with a first holding groove 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 abutment 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 portion is greater than the width of the first fitting portion; and/or the length of the first positioning portion is greater than or equal to half 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 sides of the first hand-holding part are provided with second holding grooves for facilitating holding.

In one embodiment, the positioning module is provided with at least two first positioning holes, and the at least two first positioning holes are arranged at intervals; the number and the relative positions of the second positioning holes are in one-to-one correspondence with the number and the relative positions of the first positioning holes.

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

On the other hand, the application also provides a wrist osteotomy navigation device, which comprises:

the radius osteotomy module comprises a second positioning part, wherein the second positioning part comprises a third abutting surface and a third guide surface which is adjacent to the third abutting surface and vertical 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 tuberosity of the radius, the third guide surface is used for being abutted with an osteotomy knife, the second positioning part is also provided with a third positioning hole which penetrates through the second positioning part, and the third positioning hole is used for penetrating a setting needle; the method comprises the steps of,

the wrist bone osteotomy module comprises a third positioning part, wherein the third positioning part comprises a fourth abutting surface and a fourth guide surface which is adjacent to the fourth abutting surface and vertical to the fourth abutting surface, the fourth abutting surface is provided with a fourth positioning groove which is matched with the surface of the wrist bone, the third guide surface is used for being abutted to a bone cutting knife, the third positioning part is further provided with a fourth positioning hole penetrating through the third positioning part, and the fourth positioning hole is used for penetrating a setting needle.

According to the wrist joint osteotomy navigation device, the third positioning groove matched with the master node of the radius is formed in the third abutting surface of the radius osteotomy module, the positioning of the radius osteotomy module can be achieved by enabling the groove wall of the third positioning groove to be attached to the master node of the radius, and then the positioning needle for positioning is inserted into the radius through the third positioning hole, so that the radius osteotomy module can be fixed. Finally, the third guide surface is used for guiding the feeding direction of the osteotome, so that accurate osteotomy of the radius side can be realized. Similarly, the fourth abutting surface of the carpal bone cutting module is provided with a fourth positioning groove matched with the back surface of the carpal bone, the groove wall of the fourth positioning groove is attached to the back surface of the carpal bone, the positioning of the carpal bone cutting module can be achieved, and the positioning needle for positioning is inserted into the carpal bone through the fourth positioning hole, so that the fixing of the carpal bone cutting module can be achieved. Finally, the accurate osteotomy of the wrist side can be realized by guiding the feed direction of the osteotome through the fourth guide surface, the efficiency and the accuracy of the osteotomy of the wrist joint are improved, and the secondary injury of the patient caused by repeated osteotomy is avoided.

In one embodiment, the radius osteotomy module further includes a support portion connected to the second positioning portion, and the support portion and the second positioning portion together define a clamping space for clamping the radius.

In one embodiment, the radius osteotomy module further includes a second handheld portion, the second handheld portion is connected to the second positioning portion or the supporting portion, and two opposite sides of the handheld portion 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 with the second positioning portion, the bending portion is in an L-shaped structure, the bending portion is connected with the connecting portion, and the second handheld portion is disposed between the connecting portion and the bending portion.

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

In one embodiment, the opposite two lateral sides of the third positioning portion 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, and the at least two fourth positioning holes are arranged at intervals.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic 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 view of a guiding 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 a radius osteotomy module according to an embodiment;

FIG. 10 is a side view of the radius osteotomy module shown in FIG. 9;

FIG. 11 is an elevation view of the radius osteotomy module shown in FIG. 9;

FIG. 12 is a top view of the radius osteotomy module shown in FIG. 9;

FIG. 13 is a schematic view of a carpal osteotomy module according to an embodiment;

FIG. 14 is a bottom view of the radius osteotomy module shown in FIG. 13;

fig. 15 is a cross-sectional view of the radius osteotomy module shown in fig. 14, taken at section A-A.

Reference numerals illustrate:

10. a positioning module; 11. a first positioning portion; 111. a first abutment surface; 112. a first positioning groove; 12. a first hand-held portion; 121. a second holding groove; 13. a first positioning hole; 20. a guide module; 21. a first bonding part; 211. a second abutment surface; 212. a second positioning groove; 213. a first sidewall; 214. a second sidewall; 22. a first guide part; 221. a first guide surface; 222. a second guide surface; 223. a first feed slot; 224. a second feed slot; 225. a first holding groove; 231. a second positioning hole; 232. a wrist bone positioning hole; 30. a radius osteotomy module; 31. a second positioning portion; 311. a third abutment 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 part; 332. a connection part; 331. a bending part; 333. a clamping space; 40. a carpal osteotomy module; 41. a third positioning portion; 411. a fourth abutment 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 abutment surface; 422. and a fifth positioning groove.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

An embodiment of the application provides a wrist osteotomy navigation device, which is used for positioning and guiding an osteotomy knife when a wrist is osteotomy. Further, the wrist osteotomy navigation device of an embodiment includes a positioning module 10 and a guiding module 20. Referring to fig. 1 to 4, the positioning module 10 includes a first abutment surface 111, and the first abutment surface 111 is provided with a first positioning groove 112 for matching with a master nodule of a radius, for example, the shape of the first positioning groove 112 matches with that of the master nodule of the radius, so that the groove wall of the first positioning groove 112 can be fitted with the master nodule of the radius, thereby achieving positioning of the positioning module 10. The Lister tuberosity refers to a small bone bulge on the back of the distal radius. Specifically, the shape data of the radius master node of a large number of patients can be collected, the shape of the radius master node which can be compatible with most patients can be designed, or a plurality of models can be designed for being compatible with the shape of the radius master node of different patients, preferably, a personalized customization scheme is adopted, namely, after the radius shape data of the patients are extracted by a medical image method such as CT, MRI and the like before operation, the shape of the positioning module 10 which is matched with the bone shape of the patients is manufactured by computer software, and then the positioning module 10 which is matched with the patients is manufactured by a 3D printing method.

Further, the positioning module 10 is further provided with a first positioning hole 13 penetrating the first abutment surface 111, the first positioning hole 13 being 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 abutment surface 211, the second abutment surface 211 is provided with a second positioning slot 212 configured to cooperate with a lister tuberosity of a radius, the guide module 20 is further provided with a second positioning hole 231 penetrating through the second abutment surface 211, the second positioning hole 231 is configured to be penetrated by a positioning needle 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 is disposed opposite to the second guide surface 222 and is perpendicular to the second abutment surface 211, the first guide surface 221 is configured to abut against a osteotome to guide a lateral resection of the wrist, and the second guide surface 222 is configured to abut against the osteotome to guide the lateral resection of the radius.

In particular, the wrist osteotomy navigation device of the present embodiment may be adapted to a surgical scheme that does not disassemble the radius and carpus. In this embodiment, the positioning module 10 and the guiding module 20 may be formed by 3D printing, and the first positioning groove 112 and the second positioning groove 212 are designed by profiling, so that the shape of the first positioning groove 112 and the shape of the second positioning groove 212 are matched with the outer contour shape of the Lister nodule of radius. Further, the positioning needle may be a k-wire. The osteotome may be a pendulum saw.

Further, the method for osteotomy of the wrist joint by adopting the wrist joint osteotomy navigation device comprises the following steps:

and S110, the doctor peels off the soft tissue of the wrist joint of the patient to expose the wrist joint of the patient, and the radius and the carpal bones of the patient do not need to be separated.

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 abuts against the master nodule of the radius and ensures that the front end edge of the first positioning groove and the distal joint surface of the radius face to finish positioning.

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

S140: removing the positioning module 10 and leaving the positioning needle in the radius;

s150: the guide module 20 is sleeved into 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 be fit with the Lister tuberosity of the radius.

S160: the osteotomy knife is attached to the first guide surface 221 of the guide module 20, and is advanced along the first guide surface 221 to osteotomy the radius side, and after the osteotomy of the radius side is completed, the osteotomy knife is attached to the second guide surface 222 of the guide module 20, and is advanced along the second guide surface 222 to osteotomy the wrist side.

The wrist osteotomy navigation device is provided with a first positioning groove 112 which is matched with a Lister nodule of a radius in shape on a first abutting surface 111 of the positioning module 10, and a positioning needle for positioning can be inserted into the radius through a first positioning hole 13 on the positioning module 10 by enabling the groove wall of the first positioning groove 112 to be attached to the Lister nodule of the radius. The guiding module 20 can be sleeved into the positioning needle reserved in the radius through the second positioning hole 231 to realize positioning, then the accurate osteotomy on the radius side can be realized by guiding the feeding direction of the osteotomy knife through the first guiding surface 221, and the accurate osteotomy on the carpal side can be realized by guiding the feeding direction of the osteotomy knife through the second guiding surface 222, so that the efficiency and accuracy of osteotomy on the wrist joint are improved, and the secondary injury to a patient caused by repeated osteotomy is avoided. Meanwhile, the second positioning groove 212 matched with the Lister nodule of the radius in shape is formed in the second abutting surface 211 of the guide module 20, and 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 matched with the fixing function of the positioning needle, so that the guide module 20 can be prevented from shifting or rotating in the osteotomy process, and the osteotomy accuracy is further improved. Meanwhile, the wrist joint osteotomy navigation device of the embodiment can simultaneously osteotomy the radius side and the carpal side by one-time positioning, does not need to disassemble the wrist joint, and saves 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 abutment surface 211 is located on a side of the first fitting portion 21 away from the first guide portion 22. The first guiding portion 22 is used for guiding the osteotome, a first feed groove 223 is formed in one side of the first guiding portion 22, a first guiding surface 221 is formed at the bottom of the first feed groove 223, a second feed groove 224 is formed in the other side of the first guiding portion 22, a second guiding surface 222 is formed at the bottom of the second feed groove 224, and specifically, the first feed groove 223 is formed in one side, close to the radius, of the first guiding portion 22 along the connection direction of the radius and the carpus. The second feeding groove 224 is formed at a side of the first guide 22 adjacent to the carpal bone in the connection direction of the radius bone and the carpal bone. The first feed groove 223 and the second feed 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 as to facilitate penetrating a positioning needle into the second positioning hole 231 to position the guiding module 20. It should be noted that, in other embodiments, the second positioning hole 231 may not penetrate the first guiding portion 22 by controlling the length of the positioning needle, and in particular, by shortening the length of the positioning needle exposed outside the radius, the second positioning hole 231 may penetrate only the second abutment surface 211 of the first attaching portion 21 without penetrating the first guiding portion 22.

Specifically, the projection of the first guiding 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 guiding surface 221 and the second guiding 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 feeds along the first guiding surface 221 or along the second guiding surface 222. Specifically, the first attaching portion 21 has a first side wall 213 corresponding to the first guide surface 221 and a second side wall 214 corresponding to the second guide surface 222, and the width of the first attaching portion 21 refers to the distance between the first side wall 213 and the second side wall 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 amount of osteotomy of the radius and the amount of osteotomy of the carpus, and the width W2 of the first fitting portion 21 is equal to or less than W1.

Further, in a preferred embodiment, the plane of the first guiding surface 221 is coplanar with the plane of the first side wall 213, and the plane of the second guiding surface 222 is coplanar with the plane of the second side wall 214, so that when the osteotome is fed along the first guiding surface 221 and moves to the first attaching portion 21, the osteotome can attach to the first side wall 213, and the first side wall 213 can also guide the feeding direction of the osteotome, so as to avoid shaking of the osteotome during feeding, and further improve the osteotomy accuracy. Similarly, when the osteotome feeds along the second guiding surface 222 and moves to the first attaching portion 21, the osteotome can attach to the second side wall 214, and the second side wall 214 can also play a guiding role on 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 the procedure, the operator may grasp the first guide 22, thereby avoiding shifting or rotation of the guide module 20 during the procedure. Preferably, the first guide portion 22 is further provided with a first holding groove 225 perpendicular to the first guide surface 221 and the second guide surface 222, and the holding comfort of the operator can be increased by the first holding groove 225 to avoid slipping. Further, the first holding groove 225 is an arc groove, and the diameter of the arc groove is larger than that of the thumb abdomen and the index finger abdomen, so that an operator can hold the first guiding portion 22 by 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 handheld portion 12 connected above the first positioning portion 11, the first abutment surface 111 is disposed on a side of the first positioning portion 11 away from the first handheld portion 12, and the first positioning hole 13 penetrates the first positioning portion 11 and the first handheld portion 12. The first positioning portion 11 is configured to abut against a radius, and the first hand-holding portion 12 is configured to hold an operator for facilitating a surgical operation. Preferably, two opposite sides of the first hand-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 attaching 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 the radius and carpal connection. Specifically, as described above, in order to avoid interference of the osteotome with the first abutment portion 21 during osteotomy, the width W2 of the first abutment 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 the bone preservation of patient, the bone cutting volume of wrist joint can not be very big, consequently the width W2 of first laminating portion 21 needs to be designed less, leads to first laminating portion 21 and radius area of contact less, if fix a position through first laminating portion 21 directly, can increase the risk of inaccurate location, and this kind of risk is enlarged when the operator holds first guiding portion 22 and drives into the pilot pin, arouses the inaccurate problem of location easily, and then leads to unable accurate bone cutting. The present application can perfectly solve the above problems by firstly using the positioning module 10 to perform positioning and then performing osteotomy guiding by the guiding module 20, specifically, the width of the first positioning portion 11 of the positioning module 10 is not limited by the osteotomy amount, so that the first positioning portion 11 can be designed to be larger, i.e. the width of the first positioning portion 11 can be set to be larger than the width of the first attaching portion 21, thereby increasing the contact area between the first positioning portion 11 and radius, and effectively avoiding the positioning module 10 from shaking when an operator holds the first handheld portion 12 to drive a positioning needle into the first positioning hole 13, thereby increasing the positioning accuracy and further ensuring the accuracy of subsequent osteotomy.

Further, the length L1 of the first positioning portion 11 is greater than or equal to half the width of the radius and less than or equal to the width of the radius. The length of the first positioning portion 11 refers to a dimension in a direction perpendicular to the connection direction of the radius and the carpal bones. 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, resulting 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, at this time, the portion of the two ends of the first positioning portion 11 beyond the radius is not supported, and torque is easily generated when the hand-held positioning module 10 is driven into the positioning needle, so that the first positioning portion 11 is not contacted with the radius stably, and thus positioning is inaccurate. Therefore, the length of the first positioning portion 11 is configured to be greater than or equal to half the width of the radius and less than or equal to the width of the radius, so that torque can be avoided while the contact surface between the first positioning portion 11 and the radius is ensured to be large enough, and positioning accuracy is improved. Further, the length L2 of the first handheld portion 12 is greater than or equal to the length L1 of the first positioning portion 11. Preferably, L2≡L1+5mm; while the width w4 of the first hand-held portion 12 is approximately 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 spaced apart. For example, in the present embodiment, the positioning module 10 is provided with two first positioning holes 13 arranged at intervals. The positioning accuracy is improved by the positioning module 10 being provided with at least two first positioning holes 13. Correspondingly, the number and the relative positions of the second positioning holes 231 are in one-to-one correspondence with the number and the relative positions of the first positioning holes 13. Specifically, in the present embodiment, the guide module 20 is provided with two second positioning holes 231 arranged at intervals, and the relative positions between the two second positioning holes 231 correspond to the relative positions of the two first positioning holes 13, so 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 guide module 20 is further provided with a carpal positioning hole 232, and the carpal positioning hole 232 is used for penetrating a positioning needle to fix the positioning needle to the carpal. Specifically, when the positioning needle remained on the radius is inserted into the second positioning hole 231 to position the guide module 20, the connection stability between the guide module 20 and the wrist joint is improved by inserting another positioning needle into the wrist positioning hole 232 and driving into the wrist, the displacement or rotation of the guide module 20 in the osteotomy process is further avoided, and the osteotomy accuracy is further improved.

Referring to fig. 9 to 15, fig. 9 to 15 illustrate a wrist osteotomy navigation device of 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 can be applied to an operation scheme of surgically disassembling a patient's wrist into separate radius and carpus and separately osteotomy the radius and the carpus using an osteotomy module. Specifically, the wrist 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 abutment surface 311 and a third guiding surface 312 abutting and perpendicular to the third abutment surface 311, the third abutment surface 311 is provided with a third positioning groove 313 matching the Lister nodule of the radius in shape, the third guiding surface 312 is for abutting with an osteotomy knife, the second positioning portion 31 is further provided with a third positioning hole 314 penetrating the second positioning portion 31, and the third positioning hole 314 is for penetrating a positioning needle. 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 abutment surface 411 and a fourth guide surface 413 abutting against and perpendicular to the fourth abutment surface 411, the fourth abutment surface 411 is provided with a fourth positioning slot 412 having a shape matching the back surface of the carpal bone, the fourth guide surface 413 is for abutting against the osteotomy blade, the third positioning portion 41 is further provided with a fourth positioning hole 414 penetrating the third positioning portion 41, and the fourth positioning hole 414 is for threading the positioning needle.

S210: the doctor peels off the soft tissue of the patient's wrist to expose the patient's wrist, and then separates the patient's radius and carpal bones.

S220: the third abutment surface 311 of the radius osteotomy module 30 is abutted against the radius such that the groove wall of the third positioning groove 313 fits the Lister nub of the radius to complete positioning.

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

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

S250: the fourth abutment surface 411 of the carpal tunnel bar 40 is abutted against the carpal bone such that the groove wall of the fourth positioning groove 412 abuts against the backside of the carpal bone to complete positioning.

S260: the positioning pin is inserted into the fourth positioning hole 414 of the carpal tunnel bar 40 and is driven into the carpal tunnel bar to ensure the stability of the radius tunnel bar 30 when the carpal tunnel bar is cut.

S270: the osteotomy blade is fitted to the fourth guide surface 413 of the carpal osteotomy module 40, and the osteotomy blade is advanced along the first guide surface to osteotomy the carpal side.

The wrist osteotomy navigation device is provided with the third positioning groove 313 which is matched with the master nodule of the radius in shape on the third abutting surface 311 of the radius osteotomy module 30, the positioning of the radius osteotomy module 30 can be realized by enabling the groove wall of the third positioning groove 313 to be attached to the master nodule of the radius, and then the positioning needle for positioning is inserted into the radius through the third positioning hole 314, so that the radius osteotomy module 30 can be fixed. Finally, the accurate osteotomy of the radial side can be realized by guiding the feeding direction of the osteotomy knife through the third guiding surface 312. Similarly, by providing the fourth abutting surface 411 of the carpal bone cutting module 40 with the fourth positioning groove 412 having a shape matching the back surface of the carpal bone, the positioning of the carpal bone cutting module 40 can be achieved by making the groove wall of the fourth positioning groove 412 fit with the back surface of the carpal bone, and then the positioning needle for positioning is inserted into the carpal bone through the fourth positioning hole 414, thereby fixing the carpal bone cutting module 40. Finally, the feeding direction of the osteotome is guided through the fourth guide surface 413, so that accurate osteotomy of the wrist side can be realized, the efficiency and accuracy of osteotomy of the wrist joint are improved, and secondary injury to a patient caused by multiple osteotomies is avoided. In addition, the wrist osteotomy navigation device of the embodiment firstly performs osteotomy on the radius through the radius osteotomy module 30, and then performs osteotomy on the carpus through the carpus osteotomy module 40, and the two osteotomies can be independently completed, so that the mutual influence of the radius-side osteotomy error and the carpus-side osteotomy error is avoided, the error accumulation is avoided, and the osteotomy accuracy is further improved.

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 support portion 33 includes a connection portion 332 and a bending portion 331, the connection portion 332 is connected to the second positioning portion 31, the bending portion 331 has an "L" structure, and the bending portion 331 is connected to the connection portion 332, so that the support portion 33 and the second positioning portion 31 together define a clamping space 333 for clamping the radius. When in use, 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 the two sides of the radius are fixed on the Lister tuberosity of the radius, thereby improving the positioning accuracy.

Further, the radius osteotomy module 30 further includes a second hand-held portion 32, the second hand-held portion 32 is connected to the second positioning portion 31 or the supporting portion 33, and the opposite sides of the hand-held 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, specifically, 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 surgery.

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 third positioning holes 314 spaced apart. By providing at least two third positioning holes 314 in the second positioning portion 31, positioning accuracy can be improved, and rotation of the radius osteotomy module 30 during use can be avoided after each third positioning hole 314 is inserted with a positioning needle.

Further, the length of the second positioning portion 31 is greater than or equal to half 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 carpal bone. Specifically, if the length of the second positioning portion 31 is less than half of the width of the radius, the contact surface between the second positioning portion 31 and 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, at this time, the portion of the two ends of the second positioning portion 31 beyond the radius is not supported, and torque is easily generated when the second hand-held portion 32 is held for driving the positioning needle, so that the contact between the second positioning portion 31 and the radius is unstable, and further, the positioning is inaccurate. Therefore, the length of the second positioning portion 31 is configured to be greater than or equal to half the width of the radius and less than or equal to the width of the radius, so that torque can be avoided while ensuring that the contact surface between the second positioning portion 31 and the radius is sufficiently large, and positioning accuracy is improved. Further, the width of the second positioning portion 31 is the radius osteotomy amount minus the thickness of the osteotomy blade.

Further, referring to fig. 13 to 15, the carpal osteotomy module 40 further includes an abutment 42, the abutment 42 being connected to the third positioning portion 41, the abutment 42 being provided with a fifth abutment surface 421 perpendicular to the fourth abutment surface 411, the fifth abutment surface 421 being provided with a fifth positioning groove 422 matching the distal surface of the carpal bone, and the fifth positioning groove 422 being in communication with the fourth positioning groove 412. Therefore, when the groove wall of the fourth positioning groove 412 is attached to the backside of the carpal bone, the groove wall of the fifth positioning groove 422 is attached to the distal surface of the carpal bone, so as to further improve the positioning reliability of the carpal bone osteotomy module 40, and because the fifth abutting surface 421 is perpendicular to the fourth abutting surface 411, when the first abutting surface 111 abuts against the backside of the carpal bone, the fifth abutting surface 421 abuts against the distal surface of the carpal bone, the rotation of the carpal bone osteotomy module 40 during use can be effectively avoided, and the accuracy of the carpal bone osteotomy is improved.

Further, the opposite sides of the third positioning portion 41 are provided with fourth holding grooves 415. The fourth holding groove 415 facilitates the operator to hold the third positioning portion 41, thereby facilitating driving in the positioning nail, cutting bone, and the like.

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 fourth positioning holes 414 spaced apart. The positioning accuracy can be improved by providing at least two fourth positioning holes 414 in the carpal osteotomy module 40, and the rotation of the carpal osteotomy module 40 in the use process can be avoided after the positioning needle is inserted into each fourth positioning hole 414.

Further, the length of the third positioning portion 41 is greater than or equal to half the width of the carpal bones and less than or equal to the width of the carpal bones. Wherein the length of the third positioning portion 41 refers to the dimension of the third positioning portion 41 in the direction perpendicular to the connection direction of the radius and the carpal bone. Specifically, if the length of the third positioning portion 41 is less than half 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, at this time, the portions of the two ends of the second positioning portion 31 beyond the carpal bone are not supported, and torque is easily generated when the third positioning portion 41 is held by hand to drive the positioning needle, so that the third positioning portion 41 is not stably contacted with the carpal bone, and thus the positioning is inaccurate. Therefore, the length of the third positioning portion 41 is configured to be greater than or equal to half the width of the carpal bones and less than or equal to the width of the carpal bones, which can prevent torque from being generated while ensuring that the contact surface of the third positioning portion 41 with the carpal bones is sufficiently large, thereby improving positioning accuracy. Further, the width of the third positioning portion 41 is the carpal osteotomy amount minus the thickness of the osteotome.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

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

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims

1. A wrist osteotomy navigation device, comprising:

2. The wrist osteotomy navigation device of claim 1, wherein the guide module includes a first attachment portion and a first guide portion connected to the upper side of the first attachment portion, the second abutment surface is located on a side of the first attachment portion away from the first guide portion, a first feed slot is provided on one side of the first guide portion, the first guide surface is formed by a slot bottom of the first feed slot, a second feed slot is provided on the other side of the first guide portion, the second guide surface is formed by a slot bottom of the second feed slot, and the second positioning hole penetrates through the first attachment portion and the first guide portion.

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

4. The wrist osteotomy navigation device of claim 3, wherein the first attachment portion has a first side wall corresponding to a first guide surface and a second side wall corresponding to the second guide surface, wherein the plane of the first guide surface is coplanar with the plane of the first side wall, and wherein the plane of the second guide surface is coplanar with the plane of the second side wall.

5. The wrist osteotomy navigation device of claim 2, wherein the two sides 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 penetrates the first positioning portion and the first hand-held portion.

7. The wrist osteotomy navigation device of claim 6, wherein a width of the first positioning portion is greater than a width of the first conforming portion; and/or the length of the first positioning portion is greater than or equal to half 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 the opposite sides of the first hand-held portion are each provided with a second gripping recess for facilitating gripping.

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

10. The wrist osteotomy navigation device of claim 1, wherein the guide module is further provided with a carpal bone locating hole for penetrating the locating pin to secure the locating pin to a carpal bone.

11. A wrist osteotomy navigation device, comprising:

12. The wrist osteotomy navigation device of claim 11, wherein the radius osteotomy module further comprises a support portion, the support portion being connected to the second positioning portion, and the support portion and the second positioning portion together defining a clamping space for clamping the radius.

13. The wrist osteotomy navigation device of claim 12, wherein the radius osteotomy module further comprises a second handheld portion, the second handheld portion being connected to the second positioning portion or the support portion, and wherein the opposite sides of the handheld portion are each provided with a third gripping recess.

14. The wrist osteotomy navigation device of claim 13, wherein the support 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.

15. The wrist osteotomy navigation device of claim 11, wherein the wrist osteotomy module further comprises an abutment portion connected to the third positioning portion, the abutment portion having a fifth abutment surface perpendicular to the fourth abutment surface, the fifth abutment surface having a fifth positioning slot matching a distal surface of the wrist, and the fifth positioning slot being in communication with the fourth positioning slot.

16. The wrist osteotomy navigation device of claim 11, wherein the opposite sides of the third positioning portion are each provided with a fourth gripping recess.

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

18. The wrist osteotomy navigation device of claim 11, wherein the length of the second positioning portion is greater than or equal to half 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 the width of the carpal bone and less than or equal to the width of the carpal bone.