CN112716605B - Two-way self-locking lever of ball socket type positioner - Google Patents
Two-way self-locking lever of ball socket type positioner Download PDFInfo
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- CN112716605B CN112716605B CN202110344103.XA CN202110344103A CN112716605B CN 112716605 B CN112716605 B CN 112716605B CN 202110344103 A CN202110344103 A CN 202110344103A CN 112716605 B CN112716605 B CN 112716605B
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- connecting piece
- pin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/30—Surgical robots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2046—Tracking techniques
Abstract
The invention discloses a bidirectional self-locking rod of a ball socket type positioner, which comprises a supporting rod; the lower end part of the supporting rod is connected with a bone nail; the support rod is provided with a ball joint connecting piece; the ball joint connecting piece is provided with a through cavity, and a ball body, a ball joint limiting piece, a first elastic part and a locking piece which are sequentially distributed are arranged in the through cavity; the ball is fixedly connected to the upper end part of the supporting rod; the ball joint connecting piece is fixedly provided with a device frame rod, and the device frame rod is provided with a device frame connecting piece; the frame connecting piece is provided with an accommodating hole; the connecting piece of the frame is provided with a clamping pin which is arranged in the accommodating hole in a penetrating way; two ends of the clamping pin are respectively fixedly connected with a blocking piece and a pressing piece; a second elastic component is arranged between the pressing piece and the outer side of the hole wall of the accommodating hole; the frame rod is inserted into the accommodating hole, and the clamping pin is clamped on the frame rod. The invention can be fixedly connected with the tracker, can realize 360-degree rotation of the tracker, is convenient for operation, improves the operation accuracy, and can realize quick connection and quick separation of all parts.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a bidirectional self-locking rod of a ball socket type positioner.
Background
When an orthopaedic surgical robot is used for orthopaedic surgery, a tracker needs to be arranged at a position to be operated of a human skeleton. The accurate position of the part to be operated can be positioned through the signal reflected by the tracker, so that the operation can be smoothly carried out.
The tracker that uses at present sets firmly on the bracing piece usually, and the bracing piece bottom sets up the bone nail, and the bone nail is fixed in the skeleton. When the support rod is fixed on the skeleton, the adjustment cannot be carried out. If repositioning is desired, the bone screw may be removed from the bone and then secured in the adjusted position. The prior art not only brings unnecessary injury to patients, but also delays the operation time and influences the accuracy of the operation.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bidirectional self-locking rod of a ball-and-socket positioner.
The invention solves the technical problems through the following technical scheme:
a ball socket type locator bidirectional self-locking rod comprises a supporting rod; the lower end part of the supporting rod is connected with a bone nail; the support rod is provided with a ball joint connecting piece; the ball joint connecting piece is provided with a through cavity, and a ball body, a ball joint limiting piece, a first elastic part and a locking piece which are sequentially distributed are arranged in the through cavity; the lower cavity opening of the through cavity is provided with a limiting end for preventing the ball body from separating from the ball joint connecting piece; the locking piece is in threaded connection with the ball joint connecting piece; the ball is fixedly connected to the upper end part of the supporting rod; a device frame rod is fixedly arranged on the ball joint connecting piece, and a device frame connecting piece for fixing a tracker is arranged on the device frame rod; the frame connecting piece is provided with an accommodating hole; a first limit pin is arranged on the frame rod in a penetrating way; the frame connecting piece is provided with a first strip-shaped groove on the end surface provided with the accommodating hole; the connecting piece of the frame is provided with a clamping pin which is arranged in the accommodating hole in a penetrating way; two ends of the clamping pin are respectively fixedly connected with a blocking piece and a pressing piece; the blocking piece and the pressing piece are both positioned on the outer side of the hole wall of the accommodating hole; a second elastic component is arranged between the pressing piece and the outer side of the hole wall of the accommodating hole; the frame rod is inserted into the accommodating hole, the clamping pin is clamped on the frame rod, and the first limiting pin is positioned in the first strip-shaped groove; when pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed in the accommodating hole; a second limit pin penetrates through the support rod; the top end surface of the bone nail is provided with a second strip-shaped groove for accommodating a second limiting pin; the bottom of the second strip-shaped groove is provided with an annular groove for the second limiting pin to pass through; the second limiting pin is clamped in the annular groove; one end of the annular groove is communicated with the second strip-shaped groove, the other end of the annular groove is provided with a through hole, the diameter of the through hole is larger than the height of the annular groove, and the height of the annular groove is smaller than the outer diameter of the second limiting pin; the inner wall of the annular groove is provided with a clamping groove for clamping the second limiting pin; the position of the bone nail above the annular groove forms an elastic clamping part for clamping the second limiting pin.
The first elastic component is a disc spring.
The second elastic component is an annular spring.
The end part of the rack rod is provided with a first sunken part which is distributed along the circumferential direction of the rack rod; the clamping pin is clamped in the first concave part.
And a second sunken part is arranged on the clamping pin, and when pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed between the second sunken part and the inner wall of the accommodating hole.
The clamping pins are two, second sunken parts are arranged on the clamping pins, and when pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed between the two second sunken parts.
The second depressed part distributes along joint round pin annular, and the end wall of second depressed part is the inclined plane.
The lower terminal surface of ball joint locating part is sunken face, spheroid butt in sunken face.
The ball joint connecting piece is provided with a set screw in a penetrating way, and the locking piece is provided with a positioning groove matched with the set screw.
The bone nail is sleeved with a nail sleeve, and the nail sleeve is provided with a sharp part which can be fixed on the surface of the bone.
The invention has the beneficial effects that: the two-way self-locking rod of the ball socket type locator can be fixedly connected with the tracker, can realize 360-degree rotation of the tracker, can rotate to an appointed position according to the operation requirement, does not bring secondary injury to a patient, is convenient for the operation, and improves the operation accuracy. Through the bone nail and the nail sleeve, the bone nail sleeve can be firmly fixed on the bone, and the accurate operation of the operation is ensured. The ball socket type locator bidirectional self-locking rod can realize quick connection and quick separation between the rack rod and the rack connecting piece, can realize quick connection and quick separation between the support rod and the bone nail, and greatly saves the operation preparation time.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of the present invention in use.
FIG. 2 is a schematic view of another usage status of the preferred embodiment of the present invention.
FIG. 3 is a schematic diagram of the components in a separated state according to the preferred embodiment of the present invention.
FIG. 4 is an assembly view of the preferred embodiment of the present invention.
FIG. 5 is a schematic view of the internal structure of the ball joint connector according to the preferred embodiment of the present invention.
Fig. 6 is a perspective view of the frame connector of the preferred embodiment of the present invention.
Fig. 7 is a schematic view of the internal structure of the connecting member of the stand and the supporting rod of the preferred embodiment of the present invention.
Fig. 8 is a perspective view of a bone screw in accordance with a preferred embodiment of the present invention.
Fig. 9 is a schematic view of the internal structure of the bone nail and the nail sleeve according to the preferred embodiment of the invention.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8 and 9, a ball-and-socket type positioner bidirectional self-locking lever includes a support rod 10; the lower end part of the supporting rod is connected with a bone nail 20; the support rod is provided with a ball joint connecting piece 30.
The ball joint connector 30 has a through cavity in which a ball 31, a ball joint stopper 32, a first elastic member 33, and a locking member 34 are disposed in order. In this embodiment, the first elastic member 33 is a disc spring.
The lower cavity mouth of the through cavity is provided with a limiting end 35 for preventing the ball body from separating from the ball joint connecting piece. The limiting ends are distributed annularly.
The locking member 34 is screwed to the ball joint connector 30; the ball 31 is fixed to the upper end of the support bar 10.
The lower end surface of the ball joint limiting piece 32 is a concave surface, and the ball body 31 abuts against the concave surface.
The ball joint connecting piece 30 is provided with a set screw 37 in a penetrating way, and the locking piece 34 is provided with a positioning groove matched with the set screw.
The ball 31 may achieve 360 degrees of rotation within the ball joint connection 30. The retaining member 34 prevents the components within the ball joint connector 30 from disengaging from the ball joint connector. By rotating the lock 34, the tightness between the ball 31 and the ball joint limit piece 32 can be adjusted.
Be equipped with belleville spring and ball joint locating part between spheroid and the retaining member, the ball joint locating part provides the support for spheroidal rotation. After the sphere rotates to the designated position, the sphere joint limiting part can limit the movement of the sphere under the action of the locking part and the disk spring, so that the stability of the structure is maintained.
The ball joint connector 30 is fixedly provided with a device frame rod 50, and the device frame rod is provided with a device frame connector 40 for fixing the tracker 80.
The frame connector 40 has an accommodating hole 41; a first limit pin 51 is also arranged on the frame rod 50 in a penetrating way; the rack connecting member 40 has a first linear groove 61 formed in an end surface thereof having an accommodating hole.
The connecting piece 40 of the frame is provided with a clamping pin 42 which is arranged in the accommodating hole in a penetrating way; two ends of the clamping pin 42 are respectively fixedly connected with a blocking piece 43 and a pressing piece 44; the stoppers 43 and the pressing pieces 44 are located outside the hole wall of the accommodation hole.
A second elastic member 45 is provided between the pressing piece 44 and the outside of the hole wall of the accommodation hole 41. In this embodiment, the second elastic member 45 is an annular spring.
The rack rod 50 is inserted into the accommodating hole 41, the clamping pin 42 is clamped in the rack rod 50, and the first limit pin 51 is positioned in the first linear groove 61; when a pressing force is applied to the pressing piece 44, a passage for the frame rod to enter and exit is formed in the accommodating hole.
The end part of the rack rod 50 is provided with a first concave part 71, and the first concave parts 71 are distributed along the circumferential direction of the rack rod; the latch pin 42 is latched to the first recess 71.
Two clamping pins 42 are provided, a second concave part 72 is arranged on the clamping pin 42, and when pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed between the two second concave parts 72.
In other embodiments, the clamping pin is one, a second recess is arranged on the clamping pin, and when a pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed between the second recess and the inner wall of the accommodating hole.
The second recesses 72 are distributed annularly along the snap pins, and the end walls of the second recesses 72 are inclined surfaces.
When the separated rack bar 50 and the rack connecting member 40 are required to be assembled together, a pressing force is firstly applied to the pressing member 44, the snap-fit pin 42 is forced to move, and a passage for the rack bar 50 to enter and exit is formed in the accommodating hole 41. Then, the rack bar 50 is inserted into the receiving hole 41, and when the first stopper pin 51 is located in the first linear groove 61, the first recess 71 of the rack bar 50 is flush with the catching pin 42. When the pressing piece 44 is released, the clamping pin 42 moves and is clamped in the first concave part 71 under the action of the second elastic component 45, and the connection between the rack bar 50 and the rack connecting piece 40 is realized.
When the connected rack bar 50 and the rack connecting member 40 need to be separated, a pressing force is applied to the pressing member 44, a channel for the rack bar 50 to enter and exit is formed in the accommodating hole 41, and the rack bar 50 and the rack connecting member 40 are pulled apart, so that the rack bar 50 and the rack connecting member 40 are separated.
A second limit pin 52 penetrates through the support rod 10; the top end surface of the bone nail 20 is provided with a second strip-shaped groove 62 for accommodating a second limit pin; the bottom of the second strip-shaped groove 62 is provided with an annular groove 21 for the second limit pin to pass through; the second stopper pin 52 is engaged with the circumferential groove 21. One end of the annular groove 21 is communicated with the second strip-shaped groove, the other end of the annular groove is provided with a through hole 64, the diameter of the through hole 64 is larger than the height of the annular groove 21, and the height of the annular groove 21 is smaller than the outer diameter of the second limit pin 52; the inner wall of the annular groove 21 is provided with a clamping groove 24 for clamping the second limiting pin; the part of the bone nail above the circumferential groove forms an elastic clamping part 63 for clamping the second limit pin.
The bone nail 20 is sleeved with a nail sleeve 22, and the nail sleeve 22 is provided with a sharp part capable of being fixed on the surface of the bone.
Have the column chamber 23 that is used for holding the lower tip of bracing piece on the bone nail 20, the lower tip of bracing piece inserts the column chamber, and second spacer pin 52 gets into second bar groove 62, rotation support pole and second spacer pin 52, and second spacer pin 52 moves along hoop groove 21, until second spacer pin 52 joint in hoop groove 21. Be equipped with joint recess 24 on the inner wall in annular groove, when second spacer pin 52 removed joint recess 24, realize the joint of second spacer pin 52 and annular groove 21, like this, can improve the joint effect.
When the bone screw is used, the bone screw is screwed into a bone, the screw sleeve is fixedly connected to the surface of the bone, the screw sleeve can limit the annular displacement of the bone screw, and the screw thread of the bone screw can limit the axial displacement of the bone screw.
When the ball socket type locator bidirectional self-locking rod is used, the tracker 80 for orthopedic operation can be connected to the connecting piece of the frame, and the tracker is matched with an orthopedic operation robot for use. After the bone nail at the lower end of the support rod is fixed on the surface of a bone, the support rod does not move any more, force is applied to the ball joint connecting piece, and the tracker 80 can rotate 360 degrees to a designated position according to the operation requirement. Can not bring secondary damage to patients. The bidirectional self-locking rod of the ball socket type positioner is convenient for performing an operation and improves the accuracy of the operation.
The ball socket type locator bidirectional self-locking rod can realize quick connection and quick separation between the rack rod and the rack connecting piece, can realize quick connection and quick separation between the support rod and the bone nail, and greatly saves the operation preparation time.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A ball socket type locator bidirectional self-locking rod comprises a supporting rod; the lower end part of the supporting rod is connected with a bone nail; it is characterized in that the support rod is provided with a ball joint connecting piece; the ball joint connecting piece is provided with a through cavity, and a ball body, a ball joint limiting piece, a first elastic part and a locking piece which are sequentially distributed are arranged in the through cavity; the lower cavity opening of the through cavity is provided with a limiting end for preventing the ball body from separating from the ball joint connecting piece; the locking piece is in threaded connection with the ball joint connecting piece; the ball is fixedly connected to the upper end part of the supporting rod; a device frame rod is fixedly arranged on the ball joint connecting piece, and a device frame connecting piece for fixing a tracker is arranged on the device frame rod; the frame connecting piece is provided with an accommodating hole; a first limit pin is arranged on the frame rod in a penetrating way; the frame connecting piece is provided with a first strip-shaped groove on the end surface provided with the accommodating hole; the connecting piece of the frame is provided with a clamping pin which is arranged in the accommodating hole in a penetrating way; two ends of the clamping pin are respectively fixedly connected with a blocking piece and a pressing piece; the blocking piece and the pressing piece are both positioned on the outer side of the hole wall of the accommodating hole; a second elastic component is arranged between the pressing piece and the outer side of the hole wall of the accommodating hole; the frame rod is inserted into the accommodating hole, the clamping pin is clamped on the frame rod, and the first limiting pin is positioned in the first strip-shaped groove; when pressing force is applied to the pressing piece, a channel for the frame rod to enter and exit is formed in the accommodating hole; a second limit pin penetrates through the support rod; the top end surface of the bone nail is provided with a second strip-shaped groove for accommodating a second limiting pin; the bottom of the second strip-shaped groove is provided with an annular groove for the second limiting pin to pass through; the second limiting pin is clamped in the annular groove; one end of the annular groove is communicated with the second strip-shaped groove, the other end of the annular groove is provided with a through hole, the diameter of the through hole is larger than the height of the annular groove, and the height of the annular groove is smaller than the outer diameter of the second limiting pin; the inner wall of the annular groove is provided with a clamping groove for clamping the second limiting pin; the position of the bone nail above the annular groove forms an elastic clamping part for clamping the second limiting pin.
2. The ball-and-socket retainer bi-directional self-locking lever of claim 1, wherein the first resilient member is a disc spring.
3. The ball-and-socket locator bi-directional self-locking lever as recited in claim 1, wherein the second elastic member is an annular spring.
4. The ball and socket type positioner bi-directional self-locking lever as claimed in claim 1, wherein the end of the frame lever is provided with first recesses circumferentially distributed along the frame lever; the clamping pin is clamped in the first concave part.
5. The ball and socket type locator bi-directional self-locking lever as claimed in claim 1, wherein the latch pin is provided with a second recess, and when a pressing force is applied to the pressing member, a passage for the frame rod to enter and exit is formed between the second recess and an inner wall of the receiving hole.
6. The ball and socket type positioner bi-directional self-locking lever as claimed in claim 1, wherein the number of the snap pins is two, and the snap pins are provided with second recesses, and when a pressing force is applied to the pressing member, a passage for the frame rod to enter and exit is formed between the two second recesses.
7. The ball-and-socket locator bi-directional self-locking lever as claimed in claim 5 or 6, wherein the second recesses are annularly distributed along the snap-in pin, and end walls of the second recesses are inclined surfaces.
8. The bi-directional self-locking lever of ball-and-socket type positioner according to claim 1, wherein the lower end surface of the ball joint limiting member is a concave surface, and the ball abuts against the concave surface.
9. The bidirectional self-locking bar of ball-and-socket type locator of claim 1, wherein the ball joint connecting piece is provided with a set screw in a penetrating way, and the locking piece is provided with a positioning groove matched with the set screw.
10. The bi-directional self-locking rod of ball-and-socket positioner according to claim 1, wherein the bone screw is sleeved with a screw sleeve having a sharp portion capable of being fixed on the surface of the bone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110344103.XA CN112716605B (en) | 2021-03-31 | 2021-03-31 | Two-way self-locking lever of ball socket type positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110344103.XA CN112716605B (en) | 2021-03-31 | 2021-03-31 | Two-way self-locking lever of ball socket type positioner |
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| Publication Number | Publication Date |
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| CN112716605A CN112716605A (en) | 2021-04-30 |
| CN112716605B true CN112716605B (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110344103.XA Active CN112716605B (en) | 2021-03-31 | 2021-03-31 | Two-way self-locking lever of ball socket type positioner |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114668500A (en) * | 2022-05-27 | 2022-06-28 | 杭州键嘉机器人有限公司 | Tracking array device |
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| CN112006779A (en) * | 2020-09-27 | 2020-12-01 | 安徽埃克索医疗机器人有限公司 | Precision detection method for surgical navigation system |
| CN112137698A (en) * | 2020-09-29 | 2020-12-29 | 珠海康弘健康投资管理有限公司 | Portable puncture outfit and puncture device and method formed by same |
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