CN217366058U

CN217366058U - Tibia locator

Info

Publication number: CN217366058U
Application number: CN202220246662.7U
Authority: CN
Inventors: 陆新颜
Original assignee: Changzhou Suchuan Medical Technology Co ltd
Current assignee: Changzhou Suchuan Medical Technology Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-09-06
Anticipated expiration: 2032-01-29

Abstract

The utility model discloses a tibia locator, which comprises a guide handle, a positioning arm and an aiming catheter, wherein a through hole for the insertion of the aiming catheter is arranged on the guide handle in a penetrating way, and the aiming catheter and the guide handle are fixed by a locking mechanism; the locking mechanism comprises a locking hole, a spring hole, a limiting stop block, a compression spring and an unlocking button, and the middle part of the unlocking button is connected with the guide handle through a rotating shaft; the locking hole is vertically communicated with the side wall of the through hole, the limiting stop block is arranged in the locking hole, one end of the limiting stop block is connected with the unlocking button, and the other end of the limiting stop block extends out of the locking hole to be in limiting contact with the aiming guide pipe; compression spring sets up in the spring hole, and compression spring outer end is contradicted with the unblock button inner wall, and compression spring can be compressed by the unblock button and drive spacing stop block and aim pipe separation. The utility model discloses a shin bone locator, simple structure can effectively improve the convenience of aiming the pipe and adjusting the operation, and the split of aiming pipe and guide handle after the convenient operation, and the suitability is strong.

Description

Tibia locator

Technical Field

The utility model relates to the field of medical equipment, it is very much, relate to a shin bone locator.

Background

In daily life, common people are easy to generate ligament strain during strenuous activities, while when the ordinary people rapidly do actions beyond the range of joint activities, the ligament is easy to tear or completely break due to passive pulling, and often accompanied by sprain and fracture, and timely diagnosis, treatment and reconnection of the damaged ligament are needed. The tibia locator is a necessary surgical instrument in the operation of a knee joint ligament repair patient.

Chinese patent with application number CN201820343920.7 discloses a posterior cruciate ligament tibia locator, which comprises a guide handle, a positioning hook, a locking wheel, a sleeve and a locking mechanism, wherein the guide handle is provided with a through hole in a penetrating manner, the through hole is connected with the sleeve in a sliding manner, and the sleeve and the guide handle are fixed by the locking mechanism. Although the sleeve of the tibia locator is fixed with the guide handle through the locking mechanism, in the operation process and after the operation, the length of the sleeve extending out of the through hole is difficult to adjust due to the complex structure of the locking mechanism, the sleeve can be separated only by rotating the locking mechanism after the operation, the operation is complex, the convenience is low, and the difficulty of the operation is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ligament shin bone locator, its simple structure can effectively improve the convenience of aiming the pipe and adjusting the operation, and the split of aiming pipe and guide handle after the convenient operation, and the suitability is strong.

The above object of the present invention can be achieved by the following technical solutions:

a tibia locator comprises a guide handle, a locating arm and an aiming catheter, wherein a through hole for the aiming catheter to be inserted is formed in the guide handle in a penetrating mode, and the aiming catheter and the guide handle are fixed through a locking mechanism;

the locking mechanism comprises a locking hole, a spring hole, a limiting stop block, a compression spring and an unlocking button, the locking hole and the spring hole are formed in the outer wall of the same side of the guide handle, the axes of the locking hole and the spring hole are parallel, the positions of the locking hole and the spring hole correspond to the two ends of the unlocking button respectively, the middle part of the unlocking button is connected with the guide handle through a rotating shaft, and the unlocking button can be pressed and turned along the rotating shaft;

the locking hole is vertically communicated with the side wall of the through hole, the limiting stop block is arranged in the locking hole, one end of the limiting stop block is connected with the unlocking button, and the other end of the limiting stop block extends out of the locking hole to be in limiting contact with the aiming guide pipe; compression spring sets up in the spring hole, compression spring outer end is contradicted with the release button inner wall, compression spring can be compressed and drive spacing stop block and aim the pipe separation by release button.

By adopting the technical scheme, the unlocking button is pressed, the compression spring is compressed, the unlocking button is obliquely turned along the rotating shaft to drive the limiting stop block to retract to the locking hole, the end part of the limiting stop block is separated from the aiming catheter, the extending distance of the aiming catheter can be adjusted until the required length is reached, then the pressing of the unlocking button is released, and under the action of the compression spring, the end part of the limiting stop block is abutted against the aiming catheter to realize position limitation on the aiming catheter; similarly, when the aiming guide tube needs to be detached after the operation, the unlocking button is pressed, and the aiming guide tube is pulled out. This locking mechanical system simple structure, convenient operation can effectively improve the convenience that aims the pipe and adjust the operation, and makes things convenient for the post-operative split of aiming pipe and guide handle, and the suitability is strong.

The present invention may be further configured in a preferred embodiment as: the side wall of the guide handle is provided with a notch, the middle part of the side wall of the unlocking button is connected in the notch in a pressing and overturning manner through a rotating shaft, the spring hole and the locking hole are respectively formed in two ends of the bottom wall of the notch, the unlocking button is partially embedded and installed in the notch, a driving gap is reserved between the unlocking button and the port of the spring hole, one end of the notch, facing the locking hole, is provided with a limiting boss, and the inner wall of the unlocking button is abutted against the limiting boss;

when the inner wall of one end of the unlocking button is abutted against the outer edge of the hole at the end of the spring hole, the compression spring is compressed, and the other end of the unlocking button drives the limiting stop block to retract to the locking hole and be separated from the aiming guide pipe.

By adopting the technical scheme, the stroke of the limiting stop block is limited, and when the unlocking button is pressed to the bottom towards one end of the compression spring, the aiming guide pipe is in an unlocking state; when the unlocking button is abutted against the limiting boss, the aiming guide pipe is in a state of being locked by the limiting stop block.

The present invention in a preferred embodiment can be further configured to: the end of the limiting stop block is fixed with a connecting pin, and the inner side of the unlocking button is provided with an adjusting hole for installing the connecting pin.

Through adopting above-mentioned technical scheme, the setting of regulation hole is used for keeping the stability of the flexible displacement of spacing stop block, reduces because of spacing stop block axis skew that the upset of unblock button caused.

The present invention in a preferred embodiment can be further configured to: and one end of the limiting stop block, which is close to the aiming catheter, is provided with a locking groove matched with the radian of the side surface of the aiming catheter.

Through adopting above-mentioned technical scheme, the setting of locking groove has effectively improved spacing stop block and aiming at the conflict area of pipe, and then improves the locking effect of spacing stop block to aiming at the pipe.

The present invention in a preferred embodiment can be further configured to: the upper end of the aiming guide pipe is provided with an anti-drop part, and the outer wall of the aiming guide pipe is provided with a clamping groove for embedding the end part of the limiting stop block.

Through adopting above-mentioned technical scheme, the setting of anticreep portion is used for preventing to aim the pipe and drops, and the setting of draw-in groove is used for improving the locking effect of spacing stop block to aiming the pipe.

The present invention may be further configured in a preferred embodiment as: an open slot is further formed in the guide handle and penetrates through one side of the through hole.

Through adopting above-mentioned technical scheme, the setting of open slot is used for observing the position of aiming at the pipe in the through-hole to and aiming at the locking state of pipe.

The present invention may be further configured in a preferred embodiment as: the guide handle is provided with a sliding groove, the width of the bottom of the sliding groove is larger than that of the groove opening, the positioning arm is connected in the sliding groove in a sliding mode, the sliding groove is internally provided with a threaded hole in a penetrating mode, and the threaded hole is connected with a locking nut in a threaded mode.

Through adopting above-mentioned technical scheme, the location arm passes through the spout sliding connection on the guide handle to through the locking of lock mother, can realize the regulation of location arm.

The present invention may be further configured in a preferred embodiment as: the positioning arm is provided with an arc-shaped slide way, a locking groove is formed in one side of the arc-shaped slide way, a locking block is connected in the locking groove in a sliding mode, one end, deviating from the locking groove, of the locking block penetrates through a threaded hole and is fixed with a locking nut, and the locking block is in threaded connection with the threaded hole.

Through adopting above-mentioned technical scheme, the setting of arc slide, locking recess and latch segment has realized the anti-drop of location arm, prevents the operation process or gets to take the in-process, the emergence of the location arm obscission that the female maloperation of lock caused.

The present invention may be further configured in a preferred embodiment as: one side of the arc-shaped slide way, which deviates from the locking groove, is provided with angle scale marks.

Through adopting above-mentioned technical scheme, realized the accurate regulation of locating arm.

The present invention may be further configured in a preferred embodiment as: the positioning arm is set to be one of a rear cross positioning arm, a front cross positioning arm and a femur end positioning arm.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the locking mechanism adopts a structure that the limiting stop block and the compression spring are arranged in the locking hole and the spring hole and are connected through the unlocking button, and when the unlocking button pushes the compression spring to drive the limiting stop block to separate the aiming guide pipe, the aiming guide pipe is adjustable; when the unlocking button is not stressed, one end of the unlocking button is continuously pushed by the elastic force of the compression spring, so that the other end of the unlocking button keeps a pressing state on the limiting stop block, the limiting stop block presses and locks the aiming catheter, and the aiming catheter can be prevented from loosening; the whole locking mechanism is simple in structure, convenient to operate and high in applicability.

2. Fix the sighting catheter through using spacing stop block to make the distance between the sighting catheter relative positioning arm to be able to adjust, and spacing stop block is close to sighting catheter one end and sets up and be curved locking groove, the sighting catheter sets up the locking groove near spacing stop block department and all helps spacing stop block to the fixed of sighting catheter.

3. Through seting up the spout on guide handle, make location arm sliding connection in the spout, thereby realize being close to relatively between guide handle and the location arm and keeping away from, with carry out distance adjustment and location to different patients 'posterior cruciate ligament shin bone, and guide handle fixes through the lock mother also very convenient and stable, cooperation scale mark uses the size that can the accurate control locator open and shut, thereby the adaptation is to different patients' location and clamp tightly, and through having seted up locking recess on the location arm, the lock piece is connected to the lock mother inboard, the effect that the location arm locking takes off can be realized, the emergence of the location arm pine phenomenon that the maloperation caused in preventing the operation.

4. The positioning arm is provided with a plurality of types so as to deal with different conditions of different patients and can carry out anterior cruciate surgery, posterior cruciate surgery or femoral end ligament surgery.

Drawings

Fig. 1 is a schematic view of the overall structure of the femoral end positioning arm of the present invention assembled on the guiding handle.

Fig. 2 is a schematic sectional structure view showing the connection relationship between the locking mechanism and the guiding handle of the present invention.

Fig. 3 is an illustration of the explosion structure for showing the connection relationship between the positioning arm and the guiding handle.

Fig. 4 is an explosion structure diagram for embodying the arc-shaped slideway and the locking groove of the present invention.

Fig. 5 is a schematic view of the whole structure of the rear cross positioning arm of the present invention assembled on the guiding handle.

Fig. 6 is a schematic view of the whole structure of the front cross positioning arm of the present invention assembled on the guiding handle.

In the figure, 1, a guide handle; 11. a through hole; 12. a locking hole; 13. a spring hole; 14. a notch; 141. a limiting boss; 15. an open slot; 16. a chute; 17. a threaded hole; 18. a shaft hole; 2. a positioning arm; 21. an arc-shaped slideway; 22. locking the groove; 3. an aiming catheter; 31. an anti-drop part; 32. a card slot; 4. a locking mechanism; 41. a limit stop block; 411. a connecting pin; 412. a locking groove; 42. a compression spring; 43. an unlock button; 431. an adjustment hole; 44. a rotating shaft; 5. a drive gap; 6. locking a nut; 7. and a locking block.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Referring to fig. 1 to 4, for the utility model discloses a tibia locator, including guide handle 1, location arm 2, aiming at pipe 3, run through on the guide handle 1 and set up the through-hole 11 that supplies aiming at pipe 3 grafting, aim through locking mechanical system 4 between pipe 3 and the guide handle 1 and fix. In order to conveniently observe the locking state of the aiming catheter 3 and adjust the extending length of the aiming catheter 3, an open slot 15 is further formed in the guide handle 1, and the open slot 15 penetrates through one side of the through hole 11.

The locking mechanism 4 comprises a locking hole 12, a spring hole 13, a limiting stop block 41, a compression spring 42 and an unlocking button 43, wherein the locking hole 12 and the spring hole 13 are formed in the outer wall of the guide handle 1 on the same side, the axes of the locking hole 12 and the spring hole 13 are parallel, the positions of the locking hole 12 and the spring hole 13 correspond to the two ends of the unlocking button 43 respectively, the middle part of the unlocking button 43 is connected with the guide handle 1 through a rotating shaft 44, and the unlocking button 43 can be pressed and turned over along the rotating shaft 44. The locking hole 12 is vertically communicated with the side wall of the through hole 11, the limiting stop block 41 is arranged in the locking hole 12, one end of the limiting stop block 41 is connected with the unlocking button 43, and the other end of the limiting stop block extends out of the locking hole 12 to be in limiting interference with the aiming guide 3. The compression spring 42 is arranged in the spring hole 13, the outer end of the compression spring 42 is abutted against the inner wall of the unlocking button 43, and the compression spring 42 can be compressed by the unlocking button 43 and drives the limit stop block 41 to be separated from the aiming guide pipe 3.

In order to facilitate the unlocking operation of the unlocking button 43, the side wall of the guide handle 1 is provided with a notch 14, and the middle part of the side wall of the unlocking button 43 is connected in the notch 14 in a manner of being capable of being pressed and turned over through the rotating shaft 44. Two ends of the rotating shaft 44 respectively penetrate through two opposite side walls of the notch 14, two axial ends of the rotating shaft 44 are flush with the outer wall of the guide handle 1, and a shaft hole 18 for the rotating shaft 44 to penetrate through is formed in the guide handle 1. Spring hole 13 and locking hole 12 are seted up respectively at notch 14 diapire both ends, and the part embedding of unblock button 43 is installed in notch 14, leaves drive clearance 5 between unblock button 43 and the spring hole 13 port, and notch 14 is equipped with spacing boss 141 towards the one end of locking hole 12, and unblock button 43 inner wall is contradicted with spacing boss 141. When the inner wall of one end of the unlocking button 43 is abutted against the outer edge of the end hole of the spring hole 13, the compression spring 42 is compressed, the other end of the unlocking button 43 drives the limiting stop block 41 to retract to the locking hole 12 and separate from the aiming guide pipe 3, and the aiming guide pipe 3 is in an unlocking state. When the unlocking button 43 is not stressed, the end of the compression spring 42 abuts against the inner wall of the end of the unlocking button 43, the other end of the unlocking button 43 abuts against the limit boss 141, the end of the limit stop block 41 extends out of the locking hole 12 and is kept in contact with the aiming catheter 3 under the action of the compression spring 42, and the aiming catheter 3 is in a state of being locked by the limit stop block 41.

In order to facilitate the connection of the limit stop block 41 and enable the unlock button 43 to stably extend and retract in the lock hole 12 when in a pressed state, a connecting pin 411 is fixed at the end of the limit stop block 41, and an adjusting hole 431 for installing the connecting pin 411 is formed in the inner side of the unlock button 43. The adjusting hole 431 may be a kidney-shaped hole extending along the length direction of the unlocking button 43, so as to ensure that the axis of the limiting stopper 41 may not deflect when the unlocking button 43 is in the unlocking and pressing state.

In order to improve the locking stability of the limiting stop block 41 on the aiming guide 3, one end of the limiting stop block 41 close to the aiming guide 3 is provided with a locking groove 412 matched with the side surface radian of the aiming guide 3. The upper end of the aiming guide pipe 3 is provided with a retaining part 31, and the outer wall of the aiming guide pipe 3 is provided with a clamping groove 32 for embedding the end part of the limiting stop block 41. The plurality of clamping grooves 32 are arranged, and the plurality of clamping grooves 32 are arrayed on the side wall of the aiming guide pipe 3 to form a clamping groove 32 section. The anti-drop part 31 is used for preventing the aiming guide tube 3 from being separated from the guide handle 1 and facilitating the taking; the side of the retaining portion 31 facing one end of the card slot 32 can be cut to facilitate observation of the orientation of the card slot 32.

For the convenience of being connected of alignment arm 2 and guide handle 1, seted up spout 16 on the guide handle 1, the tank bottom width of spout 16 is greater than notch 14, and alignment arm 2 sliding connection runs through threaded hole 17 in spout 16, and threaded connection has lock nut 6 on the threaded hole 17. The positioning arm 2 is connected to the guide handle 1 in a sliding mode through the sliding groove 16 and locked through the lock nut 6, and therefore adjustment of the positioning arm 2 can be achieved.

For realizing the anti-drop of location arm 2, prevent the operation process or get and take the in-process, 6 maloperation of lock cause the emergence of location arm 2 obscission: be provided with arc slide 21 on the location arm 2, be provided with locking recess 22 on arc slide 21 one side, it has latch segment 7 to have a slip joint in the locking recess 22, and the one end that latch segment 7 deviates from locking recess 22 passes screw hole 17 and is fixed with lock nut 6, and latch segment 7 links to each other with screw hole 17 screw thread. The locking block end and the locking nut can be fixed in a riveting mode, a welding mode or other modes, and as long as the locking block end and the locking nut can be fixed, the locking nut drives the locking block to axially displace in the threaded hole to realize the function of tightly supporting the positioning arm. For the accurate regulation of convenient location arm 2, the one side that arc slide 21 deviates from locking recess 22 is provided with the angle scale mark.

Through seting up spout 16 on guide handle 1, make 2 sliding connection of location arm in spout 16, thereby realize that relative being close to between guide handle 1 and the location arm 2 and keep away from, carry out distance adjustment and location with the back cruciate ligament shin bone to different patients, and guide handle 1 fixes also very convenient and stable through lock nut 6, the size that the cooperation scale mark used and to open and shut by the accurate control locator, thereby the location and the clamp of adaptation to different patients are tight, and through having seted up locking recess 22 on location arm 2, the locking piece is connected to lock nut 6 inboard, can realize the effect that the locking of location arm 2 takes off, prevent the emergence of the location arm 2 pine emergence of taking off the phenomenon that maloperation in the operation caused.

Referring to fig. 1, 5 and 6, the positioning arm 2 of the present invention can be one of the rear cross positioning arm 2, the front cross positioning arm 2 and the femur end positioning arm 2, and is a universal guiding handle 1. The positioning arm 2 is provided with a plurality of styles so as to deal with different situations of different patients, and anterior cruciate surgery, posterior cruciate surgery or femoral end ligament surgery can be carried out.

The locking mechanism 4 of the present invention adopts a structure in which the limiting stopper 41 and the compression spring 42 are disposed in the locking hole 12 and the spring hole 13 and connected through the unlocking button 43, and when the unlocking button 43 pushes the compression spring 42 to drive the limiting stopper 41 to separate the aiming guide tube 3, the aiming guide tube 3 is adjustable; when the unlocking button 43 is not stressed, the elastic force of the compression spring 42 continuously pushes one end of the unlocking button 43, so that the other end of the unlocking button 43 keeps a pressing state on the limiting stop block 41, and the limiting stop block 41 presses and locks the aiming catheter 3, thereby preventing the aiming catheter 3 from loosening; the whole locking mechanism 4 is simple in structure, convenient to operate and high in applicability.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A tibial locator, comprising: the device comprises a guide handle, a positioning arm and an aiming catheter, wherein a through hole for the insertion of the aiming catheter is formed in the guide handle in a penetrating manner, and the aiming catheter and the guide handle are fixed through a locking mechanism;

the locking mechanism comprises a locking hole, a spring hole, a limiting stop block, a compression spring and an unlocking button, the locking hole and the spring hole are formed in the outer wall of the guide handle on the same side, the axes of the locking hole and the spring hole are parallel, the positions of the locking hole and the spring hole correspond to the two ends of the unlocking button respectively, the middle of the unlocking button is connected with the guide handle through a rotating shaft, and the unlocking button can be pressed and turned along the rotating shaft;

2. The tibial locator of claim 1, wherein: the side wall of the guide handle is provided with a notch, the middle part of the side wall of the unlocking button is connected in the notch in a pressing and overturning manner through a rotating shaft, the spring hole and the locking hole are respectively formed in two ends of the bottom wall of the notch, the unlocking button is partially embedded and installed in the notch, a driving gap is reserved between the unlocking button and the port of the spring hole, one end of the notch, facing the locking hole, is provided with a limiting boss, and the inner wall of the unlocking button is abutted against the limiting boss;

3. The tibial locator of claim 2, wherein: the end of the limiting stop block is fixed with a connecting pin, and the inner side of the unlocking button is provided with an adjusting hole for installing the connecting pin.

4. The tibial locator of claim 1, wherein: and one end of the limiting stop block close to the aiming catheter is provided with a locking groove matched with the radian of the side surface of the aiming catheter.

5. The tibial locator of claim 4, wherein: the upper end of the aiming guide pipe is provided with an anti-drop part, and the outer wall of the aiming guide pipe is provided with a clamping groove for embedding the end part of the limiting stop block.

6. The tibial locator of claim 1, wherein: an open slot is further formed in the guide handle and penetrates through one side of the through hole.

7. The tibial locator of claim 1, wherein: the guide handle is provided with a sliding groove, the width of the bottom of the sliding groove is larger than that of the groove opening, the positioning arm is connected in the sliding groove in a sliding mode, the sliding groove is internally provided with a threaded hole in a penetrating mode, and the threaded hole is connected with a locking nut in a threaded mode.

8. The tibial locator of claim 7, wherein: the positioning arm is provided with an arc-shaped slide way, a locking groove is formed in one side of the arc-shaped slide way, a locking block is connected in the locking groove in a sliding mode, one end, deviating from the locking groove, of the locking block penetrates through a threaded hole and is fixed with a locking nut, and the locking block is in threaded connection with the threaded hole.

9. The tibial locator of claim 8, wherein: one side of the arc-shaped slide way, which deviates from the locking groove, is provided with angle scale marks.

10. The tibial locator of claim 1, wherein: the positioning arm is set to be one of a rear cross positioning arm, a front cross positioning arm and a femur end positioning arm.