CN214966267U

CN214966267U - Patella replacement integrated drilling device

Info

Publication number: CN214966267U
Application number: CN202120572529.6U
Authority: CN
Inventors: 柴伟; 宋平; 孔祥朋
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-12-03
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a patella replacement integration drilling equipment belongs to medical instrument technical field, including director, holding pole, drilling subassembly and power connecting rod, the holding pole setting on the director and with director fixed connection, the drilling subassembly setting on the director and with director normal running fit, the power connecting rod can be dismantled with the drilling subassembly and be connected. The utility model discloses a first gear drives three second gear rotation, and three second gear drives three drilling head rotation to drill to the patella, need not divide the cubic and drill to the patella, make drilling fast and stable more.

Description

Patella replacement integrated drilling device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a patella replacement integration drilling equipment.

Background

With the coming of the aging society of China, the incidence rate of knee osteoarthritis is increasing year by year, and the total knee replacement has become one of the most popular surgical formulas in orthopedic surgery. The joint function of the knee joint is recovered to the maximum extent, and the realization of the forgetting and the long-term use of the prosthesis is the common pursuit of patients and joint surgeons. Can carry out the patella replacement among a lot of TKA, require to carry out osteophyte clearance to the cutting back of patella valgus position, measure required patella prosthesis model, the location, punch, then processing steps such as installation. At present, the process of punching the patella is realized by three times of drilling with a drilling drill by means of a three-hole positioner, and the patella is small and difficult to hold and is influenced by the vibration of the drilling drill, so that the positioner cannot completely ensure that the position is unchanged. This brings certain difficulties to the actual surgical operation, so that the rapid, stable and accurate patella perforation plasticity is realized by designing an integrated drilling device.

A patella punch forceps, as disclosed in publication No. CN210727825U, includes a patch, a slide lock, and first and second components hinged to each other. The first element and the second element are respectively provided with a handle end and an operation end, the operation end of the first element is provided with a locking elastic sheet used for connecting an operation tool, the operation end of the second element is provided with a patch mounting hole used for mounting a patch, and the patch is mounted in the patch mounting hole. The sliding lock comprises at least one convex part or concave part arranged along the running track of the first component or the second component, the first component or the second component is blocked by the moving path of the convex part extending into the first component or the second component, so that the patella perforating clamp enters the locking state, or the first component or the second component is blocked by the part of the first component or the second component extending into the inner side of the concave part, so that the patella perforating clamp enters the locking state. The utility model discloses a patella hole pincers can fix a position the position of punching comparatively accurately, and the simple operation, can reduce art person's maloperation probability.

However, the above-mentioned device still has the following problems in use, one of which is that the perforation of the patella needs to be completed in three times, the patella is small and is not easy to be held, and the perforation effect is affected, and the vibration positioner is easy to shift in position during perforation, which results in inaccurate perforation direction and position.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a patella replacement integration drilling equipment to solve and punch at the patella and need divide the cubic just can accomplish, the patella is less difficult to control, influences its effect of punching, and the easy position offset that takes place of vibration locator when punching leads to the direction and the unsafe technical problem in position of punching.

The embodiment of the utility model provides an adopt following technical scheme: the utility model provides a patella replacement integration drilling equipment, includes the director, holds pole, drilling subassembly and power connecting rod, hold the pole setting on the director and with director fixed connection, drilling subassembly set up on the director and with director normal running fit, the power connecting rod can be dismantled with drilling subassembly and be connected.

Furthermore, the drilling assembly comprises a metal shell, a middle shaft rod, a first gear, three drilling heads and three second gears, one end of the middle shaft rod penetrates through the metal shell and is in running fit with the top of the metal shell, the power connecting rod is detachably connected with one end of the middle shaft rod, the other end of the middle shaft rod is in running fit with the bottom of the metal shell, the first gear is fixedly connected with the middle of the middle shaft rod, the upper ends of the three drilling heads are respectively fixedly connected with the three second gears and are located in the metal shell, the three second gears are mutually meshed with the first gear, holes are formed in the bottoms of the metal shell and the guider, and the lower ends of the three drilling heads penetrate through the bottoms of the metal shell and the guider.

Furthermore, be provided with the stopper on the inside wall of director, be equipped with the spacing groove on metal casing's the lateral wall, the stopper card is gone into in the spacing groove.

Further, drill bit subassembly still includes the fixed block, the fixed block setting is in metal casing and fixed block and metal casing fixed connection, well axostylus axostyle and fixed block normal running fit, it is three the even equidistance of drilling head sets up on the fixed block and three drilling head all with fixed block normal running fit.

Further, the diameters of the three second gears and the first gear are the same.

Furthermore, the diameters of the three drilling heads are 5-9mm, the distance between the drilling heads and the middle shaft rod is 8-20mm, and the positions of the three drilling heads correspond to three columns of the patella prosthesis.

Furthermore, a connecting hole is formed in the middle shaft rod, and the power connecting rod is detachably connected with the connecting hole in the middle shaft rod.

Furthermore, the bottom of the guider is provided with three rotating holes, the three drilling heads respectively penetrate through the three rotating holes in the bottom of the guider and are in rotating fit with the guider, and the three drilling heads penetrate through the guider, are 3-6mm long and are equal to the height of the patella prosthesis column.

The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect:

one of them, power connecting rod work drives in the axostylus axostyle rotation at metal casing, and the axis pole drives first gear rotatory, and first gear drives three second gear rotatory, and three second gear drives three drilling head rotatory to drill the patella, need not divide the cubic and drill the patella, make the drilling fast and stable more.

And secondly, when the first gear drives the three second gears to rotate, the rotating speed of the drilling head is ensured to be consistent with that of the middle shaft rod, and the rotating speed proportion can be changed by adjusting the diameter proportion of the first gear and the second gear.

And thirdly, the limiting block limits the metal shell, so that the metal shell is prevented from rotating in the guider when drilling, and the drilling position is not accurate.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic view of the split structure of the present invention;

fig. 4 is a schematic view of a partial three-dimensional structure of the present invention.

Reference numerals

The guide device comprises a guide device 1, a holding rod 222, a drilling component 333, a guide device 1, a holding rod 222, a limiting block 3, a metal shell 4, a rotating block 5, a middle shaft rod 6, a power connecting rod 7, a first gear 8, a drilling head 9, a second gear 10 and a limiting groove 11.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of the present invention provides a patella replacement integrated drilling device, including a guide 1, a holding rod 222, a drilling component 333 and a power connecting rod 7, where the holding rod 222 is disposed on the guide 1 and is fixedly connected with the guide 1, the drilling component 333 is disposed on the guide 1 and is rotationally matched with the guide 1, and the power connecting rod 7 is detachably connected with the drilling component 333; connect power connecting rod 7 and drilling subassembly 333, handheld holding rod 222 removes the director, and power connecting rod 7 work drives drilling subassembly 333 and drills to the patella, can once only accomplish drilling in the operation, and director 1 plays the supporting role to drilling subassembly 333, and fixed subassembly 222 avoids drilling to shift the accuracy that influences drilling.

Preferably, the drilling assembly 333 of the present invention includes a metal casing 4, a middle shaft rod 6, a first gear 8, three drilling heads 9 and three second gears 10, wherein one end of the middle shaft rod 6 runs through the metal casing 4 and is in running fit with the top of the metal casing 4, the power connecting rod 7 is detachably connected with one end of the middle shaft rod 6, the other end of the middle shaft rod 6 is in running fit with the bottom of the metal casing 4, the first gear 8 is fixedly connected with the middle of the middle shaft rod 6, the upper ends of the three drilling heads 9 are respectively fixedly connected with the three second gears 10 and are located in the metal casing 4, the three second gears 10 are all engaged with the first gear 8, the bottoms of the metal casing 4 and the guider 1 are all provided with holes, and the lower ends of the three drilling heads 9 all run through the bottoms of the metal casing 4 and the guider 1; the power connecting rod 7 drives the middle shaft rod 6 to rotate in the metal shell 4, the middle shaft rod 6 drives the first gear 8 to rotate, the first gear 8 drives the three second gears 10 to rotate, the three second gears 10 drive the three drilling heads 9 to rotate, so that the patella is drilled, the patella is not required to be drilled for three times, and the drilling is more rapid and stable.

Preferably, the inner side wall of the guider 1 of the utility model is provided with a limiting block 3, the outer side wall of the metal shell 4 is provided with a limiting groove 11, and the limiting block 3 is clamped into the limiting groove 11; the limiting block 3 limits the metal shell 4, and the metal shell 4 is prevented from rotating in the guider 1 when drilling is carried out, so that the drilling position is not accurate.

Preferably, the drill bit assembly 333 of the present invention further includes a fixing block 5, the fixing block 5 is disposed in the metal housing 4, the fixing block 5 is fixedly connected to the metal housing 4, the middle shaft lever 6 is rotatably fitted to the fixing block 5, the three drilling bits 9 are uniformly and equidistantly disposed on the fixing block 5, and the three drilling bits 9 are rotatably fitted to the fixing block 5; the fixing block 5 has a limiting effect on the first gear 8 and the second gear 10, and prevents the first gear 8 and the second gear 10 from rotating and shifting obliquely, so that drilling cannot be completed at one time, and the stability of drilling a patella in an operation is improved.

Preferably, the diameters of the three second gears 10 and the first gear 8 are the same; when the first gear 8 drives the three second gears 10 to rotate, the rotating speed of the drilling head 9 is ensured to be consistent with that of the middle shaft rod 6, and the rotating speed proportion can also be changed by adjusting the diameter proportion of the first gear 8 and the second gear 10.

Preferably, the diameter of the three drilling heads 9 of the utility model is 5-9mm, the distance between the drilling heads 9 and the middle shaft rod 6 is 8-20mm, and the positions of the three drilling heads 9 correspond to three columns of the patella prosthesis; three drilling head 9 simultaneous working and three drilling head 9's rotational speed are unanimous, can carry out quick accurate punching to the patella simultaneously.

Preferably, the middle shaft lever 6 of the utility model is provided with a connecting hole, and the power connecting rod 7 is detachably connected with the connecting hole on the middle shaft lever 6; one end of the power connecting rod 7 is rapidly inserted into the quadrilateral connecting hole in the middle shaft rod 6, the other end of the power connecting rod is rapidly connected with an electric drill, the electric drill drives the power connecting rod 7 to rotate, the power connecting rod 7 drives the middle shaft rod 6 to rotate, the middle shaft rod 6 drives the drilling head 9 to rotate, power is provided for patella drilling, and the connecting hole can be hexagonal or in other shapes capable of transmitting power.

Preferably, the bottom of the guider 1 of the utility model is provided with three rotating holes, three drilling heads 9 respectively penetrate through the three rotating holes at the bottom of the guider 1 and are in rotating fit with the guider 1, and the length of the three drilling heads 9 penetrating out of the guider 1 is 3-6mm and is equal to the height of the patella prosthesis column; when the drilling head 9 drills holes in the patella, the guider 1 limits the drilling depth of the patella of the drilling head 9, and the accuracy of drilling is improved.

The utility model discloses a theory of operation: when the utility model is used, the holding rod 222 is taken to move the guider 1 during drilling, the drilling position is convenient to control in the operation, the drilling accuracy is improved, one end of the power connecting rod 7 is quickly inserted into the quadrilateral connecting hole on the middle shaft rod 6, the other end is quickly connected with the electric drill, the electric drill works to drive the power connecting rod 7 to rotate, the power connecting rod 7 drives the middle shaft rod 6 to rotate, the middle shaft rod 6 drives the drilling head 9 to rotate, power is provided for patella drilling, the connecting hole can be hexagonal or other shapes capable of transmitting power, the power connecting rod 7 works to drive the middle shaft rod 6 to rotate in the metal shell 4, the middle shaft rod 6 drives the first gear 8 to rotate, the first gear 8 drives the three second gears 10 to rotate, the three second gears 10 drive the three drilling heads 9 to rotate, thereby drilling the patella, the patella does not need to be drilled three times, the drilling is more rapid and stable, the limiting block 3 limits the metal shell 4, the metal shell 4 is prevented from rotating in the guider 1 when drilling is carried out, the drilling position is inaccurate, the fixing block 5 has a limiting effect on the first gear 8 and the second gear 10, the phenomenon that the first gear 8 and the second gear 10 rotate to incline and shift is avoided, the drilling cannot be completed at one time is avoided, the stability of patella drilling in an operation is improved, when the first gear 8 drives the three second gears 10 to rotate, the rotating speed of the drilling head 9 is consistent with that of the middle shaft rod 6, the rotating speed ratio can be changed by adjusting the ratio of the diameters of the first gear 8 and the second gear 10, the three drilling heads 9 work simultaneously, the rotating speeds of the three drilling heads 9 are consistent, rapid and accurate drilling can be carried out on the patella simultaneously, when the drilling heads 9 drill the patella, the guider 1 limits the drilling depth of the patella drilling heads 9, the accuracy of drilling is improved.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a patella replacement integration drilling equipment which characterized in that: including director (1), control pole (222), drilling subassembly (333) and power connecting rod (7), control pole (222) setting on director (1) and with director (1) fixed connection, drilling subassembly (333) set up on director (1) and with director (1) normal running fit, power connecting rod (7) can be dismantled with drilling subassembly (333) and be connected.

2. The patellar replacement integrated drilling device according to claim 1, wherein: the drilling component (333) comprises a metal shell (4), a middle shaft rod (6), a first gear (8), three drilling heads (9) and three second gears (10), one end of the middle shaft lever (6) penetrates through the metal shell (4) and is in running fit with the top of the metal shell (4), the power connecting rod (7) is detachably connected with one end of the middle shaft rod (6), the other end of the middle shaft lever (6) is rotationally matched with the bottom of the metal shell (4), first gear (8) and the middle part fixed connection of axis pole (6), three second gear (10) of three drilling head (9) upper end difference fixed connection and be located metal casing (4), three second gear (10) all with first gear (8) intermeshing, the bottom of metal casing (4) and director (1) all sets up porosely, metal casing (4) and director (1) bottom are all run through to three drilling head (9) lower extreme.

3. The patellar replacement integrated drilling device according to claim 2, wherein: be provided with stopper (3) on the inside wall of director (1), be equipped with spacing groove (11) on the lateral wall of metal casing (4), stopper (3) card is gone into in spacing groove (11).

4. The patellar replacement integrated drilling device according to claim 2 or 3, wherein: drilling subassembly (333) still includes fixed block (5), fixed block (5) set up in metal casing (4) and fixed block (5) and metal casing (4) fixed connection, well axostylus axostyle (6) and fixed block (5) normal running fit, it is three the even equidistance of drilling head (9) sets up on fixed block (5) and three drilling head (9) all with fixed block (5) normal running fit.

5. The patellar replacement integrated drilling device according to claim 2 or 3, wherein: the diameters of the three second gears (10) and the first gear (8) are the same.

6. The patellar replacement integrated drilling device according to claim 2 or 3, wherein: the diameters of the three drilling heads (9) are 5-9mm, the distance between the drilling heads (9) and the middle shaft rod (6) is 8-20mm, and the positions of the three drilling heads (9) correspond to three columns of the patella prosthesis.

7. The patellar replacement integrated drilling device according to claim 2 or 3, wherein: the middle shaft rod (6) is provided with a connecting hole, and the power connecting rod (7) is detachably connected with the connecting hole in the middle shaft rod (6).

8. The patellar replacement integrated drilling device according to claim 2 or 3, wherein: the bottom of director (1) is equipped with three rotation hole, and is three drilling head (9) run through the three rotation hole of director (1) bottom respectively and with director (1) normal running fit, three the length that director (1) was worn out to drilling head (9) is 3-6mm, equals the height of patella prosthesis post.