CN111870411B

CN111870411B - Gap measuring block

Info

Publication number: CN111870411B
Application number: CN202010678920.4A
Authority: CN
Inventors: 王健; 魏崇斌; 黄仁宏; 毛联甲; 闵信群
Original assignee: Tianyan Medical Equipment Co ltd
Current assignee: Tianyan Medical Equipment Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-12-23
Anticipated expiration: 2040-07-15
Also published as: CN111870411A

Abstract

The invention discloses a clearance measuring block, which comprises a measuring block body, wherein an adjusting block is arranged at the upper end in the measuring block body, a height adjusting mechanism is arranged between the measuring block body and the adjusting block, a waist-shaped hole is formed in the height adjusting mechanism, a force line rod is inserted into the waist-shaped hole, a lock catch is sleeved on the force line rod, the height adjusting mechanism comprises a rotary drum, a fixed drum, a ring groove, a spiral groove, a fixed pin and a guide pin, the rotary drum is positioned between the measuring block body and the adjusting block, the fixed drum is positioned in the rotary drum, the ring groove is formed in the contact position of the lower part of the rotary drum and the measuring block body, the spiral groove is formed in the contact position of the middle part of the rotary drum and the adjusting block, the fixed pin penetrates through the spiral groove, and the guide pin is arranged in the spiral groove; the clearance measuring block can conveniently adjust the height, and the steps of repeatedly taking down the clearance measuring block, installing the compensating block and measuring again are not needed during measurement, so that the clearance measuring block can be adjusted to be in place by one-time measurement.

Description

Gap measuring block

Technical Field

The invention relates to the field of medical instruments, in particular to a gap measuring block.

Background

Knee joint replacement operation is the operation that uses the prosthesis to replace human joint, need measure the clearance between thighbone and the shin bone during the operation, in order to select suitable prosthesis, measure extension clearance and flexion clearance promptly, there are multiple clearance gauge blocks on the market at present, height after thighbone postcondylar osteotomy is all measured to general clearance gauge block, along with the improvement of the accuracy nature of present theory and operation requirement, need to survey clearance volume at first before the postcondylar osteotomy, traditional clearance gauge block can't satisfy the use, and traditional clearance gauge block has some defects:

1. when the gap measuring block is used for measuring the buckling gap, the gap measuring block is required to be matched with a four-in-one osteotomy module for use, the four-in-one osteotomy modules with different designs exist in the current market, the contact positions of the middle parts of the four-in-one osteotomy modules and the gap measuring block are provided with convex parts, and the gap measuring block cannot be used with the traditional gap measuring block in a general way;

2. in an operation, if a gap measuring block measured for the first time is inaccurate, the gap measuring block needs to be taken down, a patch is added on the gap measuring block, then the gap measuring block is placed into the gap for measurement, and the most accurate gap size is repeatedly obtained, so that the operation is complicated, and the time is prolonged;

3. the straightening gap and the buckling gap are small and are millimeter units, so that the gap measuring block and the patch are tightly matched and cannot shake to accurately measure, and the existing gap measuring block and the patch are clamped by a groove and a pin, so that the clamping is tight, the gap measuring block and the patch are difficult to disassemble, and the operation is delayed or the cleaning is inconvenient;

4. when the gap measuring block is used for measurement, the gap measuring block is required to be matched with a force line rod, the force line rod is required to be fixed with the force line rod after being adjusted properly, and the gap measuring block is guided to be perpendicular to a mechanical axis so as to ensure that the measurement is free of deviation;

the invention discloses a clearance measuring block which is used for solving the problems.

Disclosure of Invention

The invention aims to provide a gap measuring block to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a clearance measuring block comprises a measuring block body, the measuring block body is bilaterally symmetrical, the symmetrical measuring block body is convenient for a doctor to operate and reduces the judging time, measuring blocks used for detecting the clearance are arranged on two sides of the measuring block body, the measuring block body is of a structure with a hollowed inner part, a regulating block is arranged at the upper end inside the measuring block body, the regulating block is arranged at the hollowed inner part of the measuring block body and is similar to the measuring block body in shape and is matched with the inner part of the measuring block body, a height regulating mechanism is arranged between the measuring block body and the regulating block and is used for regulating the heights of the measuring block body and the regulating block so as to detect the clearance of knee joints with different heights, a waist-shaped hole is arranged in the height regulating mechanism and penetrates through the measuring block body and the regulating block, a force line rod is inserted into the waist-shaped hole and is used for matching with the measuring block body, the measuring block body is perpendicular to a mechanical axis when measuring a gap, so that the generation of a measuring error is prevented, the force line rod is sleeved with the lock catch, the height of the force line rod needs to be adjusted in an operation, after the height adjustment is completed, the measuring block body and the force line rod can be fixed by using the lock catch, the force line rod is prevented from shaking to cause inaccurate measurement, the height adjusting mechanism comprises a rotary drum, a fixed drum, a ring groove, a spiral groove, a fixed pin and a guide pin, the rotary drum is positioned in the middle of an adjusting block, the rotary drum penetrates through the measuring block body and the adjusting block and can rotate relative to the measuring block body and the adjusting block, the gap between the measuring block body and the adjusting block can be adjusted during rotation, the total height of the measuring block body and the adjusting block is further adjusted, the fixed drum is positioned in the rotary drum, the fixed drum penetrates through the measuring block body and the adjusting block and cannot rotate relative to the measuring block body and the adjusting block, the position of rotary drum lower part and survey piece body contact is provided with the annular, the annular is the horizontal groove, the position of rotary drum middle part and regulating block contact is provided with the helicla flute, the helicla flute is the groove that spiral shell rises, it is provided with the fixed pin to pass in the annular, be provided with the guide pin in the helicla flute, when the rotary drum rotated, the guide pin was driven by the helicla flute and is risen or descended.

Preferably, fixed pin and survey between the piece body through a pin fixed, it is fixed through No. two pins between fixed pin and the solid fixed cylinder, the fixed pin sees through the annular will survey between piece body and the solid fixed cylinder fixedly, and when the rotary drum rotated, survey piece body and solid fixed cylinder can not rotate thereupon, it is fixed through No. three pins between guide pin and the regulating block, when the guide pin was driven by the helicla flute and is risen or descend, drive the regulating block up-and-down motion simultaneously.

Preferably, a scale is arranged on one side of the upper portion, exposed out of the adjusting block, of the rotating cylinder, a pointer is arranged on one side, corresponding to the scale, of the adjusting block, when the rotating cylinder rotates, the adjusting block rises or falls, the side, exposed out of the adjusting block, of the rotating cylinder is immersed into the adjusting block, and the rising or falling height of the adjusting block is the scale corresponding to the scale and the pointer.

Preferably, the lower end of the measuring block body is provided with a patch, under the condition of a small number of the measuring block body and the adjusting block, when the adjusting thickness of the measuring block body and the adjusting block cannot meet the gap size, the thickness can be increased by increasing the patch, a plurality of cylindrical grooves are arranged on two sides of the measuring block body and two sides of the adjusting block, the cylindrical grooves penetrate through the measuring block body and the adjusting block, fan-shaped grooves are arranged on the outer edges of two sides of the measuring block body, clamping columns are arranged at the positions corresponding to the patch and the cylindrical grooves, the clamping columns are matched with the cylindrical grooves, ferrules are arranged on the clamping columns and are used for assisting the clamping columns to be tightly matched with the cylindrical grooves, fan-shaped protrusions are arranged at the positions corresponding to the patch and the fan-shaped grooves, and the fan-shaped grooves are matched with the fan-shaped protrusions.

Preferably, two force line holes are formed in the two sides, located in the waist-shaped hole, of the measuring block body and the adjusting block, the force line rod can be inserted into the force line holes to adjust the position of the force line rod, the waist-shaped hole is formed in the fixing cylinder, and the force line rod can move left and right in the waist-shaped hole to adjust the position.

Preferably, the both sides of surveying piece body and regulating block still are provided with the breach, the breach is used for avoiding the arch on the four unification osteotomy modules, makes things convenient for this device and four unification osteotomy modules to use simultaneously.

Preferably, the power line pole includes long guide arm, leads syringe needle, bullet post, long guide arm is located waist shape downthehole, the guide pin head sets up in long guide arm upper end, it sets up with long guide arm is fixed to lead syringe needle, it is provided with the recess all around to lead the syringe needle, makes things convenient for the staff to hold, the overhead upper end of guide pin is provided with the bullet post, the bullet post is convenient to be connected with the connecting rod.

Preferably, the power line pole upper end is provided with the connecting rod, the connecting rod is used for adding the power line pole with long, makes things convenient for the operation, the connecting rod includes connector, short guide bar, the connector sets up in bullet post upper end, bullet post inserts in the connector, produces elasticity to the connector inner wall, fixes the two, makes power line pole and connecting rod, short guide bar sets up in the connector upper end.

Preferably, the hasp includes sleeve and bullet arm, the sleeve cup joints on the power line pole, the sleeve lower extreme is provided with a plurality of bullet arms, the bullet arm is the curved surface form, the middle section and the power line pole of bullet arm take place to interfere for produce elasticity between bullet arm and the power line pole, fix the power line pole on the gage block body.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the gap measuring block disclosed by the invention, the height adjusting mechanism is additionally arranged, the height can be conveniently adjusted, the steps of repeatedly taking down the gap measuring block, installing the compensating block and measuring again are not needed during measurement, the gap measuring block can be measured in place at one time through the height adjusting mechanism, and the operation difficulty is reduced;

2. in the invention, the gap measuring block is provided with the notch, so that the bulge on the four-in-one osteotomy module is matched with the notch, the gap measuring block can be matched with most four-in-one osteotomy modules on the market for use, and the applicability is increased;

3. according to the invention, the cylindrical groove and the fan-shaped groove are arranged, so that the cylindrical groove and the clamping column and the fan-shaped protrusion on the compensating block are matched and clamped with each other, the cylindrical groove penetrates through the measuring block body and the adjusting block and is matched with the fan-shaped protrusion, the measuring block body and the adjusting block can be separated by pressing the fan-shaped protrusion with a hand, and the disassembling and the cleaning are convenient;

4. according to the invention, after the height of the force line rod is adjusted, the lock catch can fix the force line rod and the measuring block body at any time, so that the force line rod is prevented from shaking to cause that the gap measuring block is not vertical to a mechanical axis, and the measurement is not accurate;

5. this device can measure the clearance alone before the thighbone postcondylar osteotomy, cuts the bone after and four unification and cuts the bone module cooperation and measure, and the usage is comparatively extensive.

Drawings

FIG. 1 is a cross-sectional view of a gap sensing block of the present invention;

FIG. 2 is a cross-sectional view of the height adjustment mechanism of the present invention

FIG. 3 is a front view of the drum of the present invention;

FIG. 4 is a top view of the gage block body and adjustment block of the present invention;

FIG. 5 is a perspective view of the gage block body and adjustment block of the present invention;

FIG. 6 is a perspective view of the patch of the present invention;

FIG. 7 is a cross-sectional view of the force wire shaft of the present invention;

FIG. 8 is a cross-sectional view of a connecting rod of the present invention;

fig. 9 is a perspective view of the latch of the present invention.

Reference numerals are as follows: 1. a measuring block body; 2. an adjusting block; 3. a height adjustment mechanism; 4. a waist-shaped hole; 5. a force wire rod; 6. locking; 7. a rotating drum; 8. a fixed cylinder; 9. a ring groove; 10. a helical groove; 11. a fixing pin; 12. a guide pin; 13. a first pin; 14. a second pin; 15. a third pin; 16. calibration; 17. a pointer; 18. supplementing blocks; 19. a cylindrical groove; 20. a sector groove; 21. clamping the column; 22. a ferrule; 23. a sector convex; 24. a force wire hole; 25. a notch; 26. a long guide rod; 27. a needle guide head; 28. a bullet column; 29. a connecting rod; 30. a connector; 31. a short guide rod; 32. a sleeve; 33. and a spring arm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 3, in the present invention, a gap measuring block comprises a measuring block body 1, the measuring block body 1 is bilaterally symmetrical, the symmetrical measuring block body 1 is convenient for a doctor to operate, the judging time is reduced, measuring blocks for detecting gaps are provided on both sides of the measuring block body 1, the measuring block body 1 is of an internally hollowed structure, an adjusting block 2 is provided at the upper end of the inside of the measuring block body 1, the adjusting block 2 is provided at the internally hollowed part of the measuring block body 1, is similar in shape to the measuring block body 1 and is adapted to the inside of the measuring block body 1, a height adjusting mechanism 3 is provided between the measuring block body 1 and the adjusting block 2, the height adjusting mechanism 3 is used for adjusting the heights of the measuring block body 1 and the adjusting block 2 to detect knee joint gaps with different heights, a waist-shaped hole 4 is provided in the height adjusting mechanism 3, the waist-shaped hole 4 penetrates through the measuring block body 1 and the adjusting block 2, a force line rod 5 is inserted into the waist-shaped hole 4, the force line rod 5 is used for being matched with the measuring block body 1, so that the measuring block body 1 is perpendicular to a mechanical axis when measuring a gap, the generation of a measurement error is prevented, the force line rod 5 is sleeved with the lock catch 6, the height of the force line rod 5 needs to be adjusted in an operation, after the height adjustment is completed, the measuring block body 1 and the force line rod 5 can be fixed by using the lock catch 6, the inaccuracy of measurement caused by the shaking of the force line rod 5 is prevented, the height adjusting mechanism 3 comprises a rotary drum 7, a fixed drum 8, a ring groove 9, a spiral groove 10, a fixed pin 11 and a guide pin 12, the rotary drum 7 is positioned in the middle of the adjusting block 2, the rotary drum 7 penetrates through the measuring block body 1 and the adjusting block 2 and can rotate relative to the measuring block body 1 and the adjusting block 2, the gap between the measuring block body 1 and the adjusting block 2 can be adjusted during the rotation, the total height of the measuring block body 1 and the adjusting block 2 is further adjusted, the fixed drum 8 is positioned inside the rotary drum 7, piece body 1 and regulating block 2 are surveyed to 8 break-over of solid fixed cylinder, can not rotate for surveying piece body 1 and regulating block 2, the position of 7 lower parts of rotary drum and surveying piece body 1 contact is provided with annular 9, annular 9 is the horizontal groove, the position of 7 middle parts of rotary drum and 2 contacts of regulating block is provided with helicla flute 10, helicla flute 10 is the groove that rises spirally, it is provided with fixed pin 11 to pass in the annular 9, be provided with guide pin 12 in the helicla flute 10, when rotary drum 7 rotates, guide pin 12 is driven by helicla flute 10 and is risen or descend.

Referring to fig. 2, the fixing pin 11 and the measuring block body 1 are fixed by a first pin 13, the fixing pin 11 and the fixing cylinder 8 are fixed by a second pin 14, the fixing pin 11 fixes the measuring block body 1 and the fixing cylinder 8 through the ring groove 9, when the rotary drum 7 rotates, the measuring block body 1 and the fixing cylinder 8 do not rotate along with the fixing pin, the guide pin 12 and the adjusting block 2 are fixed by a third pin 15, and when the guide pin 12 is driven by the spiral groove 10 to ascend or descend, the adjusting block 2 is driven to move up and down.

Referring to fig. 3 to 4, a scale 16 is disposed on one side of the upper portion of the rotating drum 7 exposed out of the adjusting block 2, a pointer 17 is disposed on one side of the adjusting block 2 corresponding to the scale 16, when the rotating drum 7 rotates, the adjusting block 2 ascends or descends, the side of the rotating drum 7 exposed out of the adjusting block 2 is submerged into the adjusting block 2, and the ascending or descending height of the adjusting block 2 is the scale corresponding to the scale 16 and the pointer 17.

Referring to fig. 1 and 4 to 6, a compensation block 18 is arranged at the lower end of a measurement block body 1, in a small number of cases, when the adjustment thickness of the measurement block body 1 and an adjustment block 2 still cannot meet the gap size, the thickness can be increased by increasing the compensation block 18, a plurality of cylindrical grooves 19 are arranged on two sides of the measurement block body 1 and the adjustment block 2, the cylindrical grooves 19 penetrate through the measurement block body 1 and the adjustment block 2, sector grooves 20 are arranged on the outer edges of two sides of the measurement block body 1, clamping columns 21 are arranged at positions corresponding to the compensation block 18 and the cylindrical grooves 19, the clamping columns 21 are matched with the cylindrical grooves 19, ferrules 22 are arranged on the clamping columns 21, the ferrules 22 are used for assisting the tight matching between the clamping columns 21 and the cylindrical grooves 19, sector protrusions 23 are arranged at positions corresponding to the compensation block 18 and the sector grooves 20, and the sector grooves 20 are matched with each other.

Referring to fig. 4, two force line holes 24 are formed in the measuring block body 1 and the adjusting block 2 at two sides of the waist-shaped hole 4, the force line rod 5 can be inserted into the force line holes 24 to adjust the position of the force line rod 5, the waist-shaped hole 4 is formed in the fixing cylinder 8, and the force line rod 5 can move left and right in the waist-shaped hole 4 to adjust the position.

Referring to fig. 4 to 5, notches 25 are further formed in two sides of the measuring block body 1 and the adjusting block 2, and the notches 25 are used for avoiding protrusions on the four-in-one osteotomy module, so that the device and the four-in-one osteotomy module can be conveniently used at the same time.

Referring to fig. 7, the line bar 5 includes a long guide rod 26, a guide pin head 27, and a bullet column 28, the long guide rod 26 is located in the waist-shaped hole 4, the guide pin head 27 is disposed at the upper end of the long guide rod 26, the guide pin head 27 and the long guide rod 26 are fixedly disposed, a groove is disposed around the guide pin head 27 for being held by a human hand, the bullet column 28 is disposed at the upper end of the guide pin head 27, and the bullet column 28 is conveniently connected with the connection rod 29.

Referring to fig. 8, a connecting rod 29 is disposed at the upper end of the force line rod 5, the connecting rod 29 is used for lengthening the force line rod 5, so as to facilitate the operation, the connecting rod 29 includes a connector 30 and a short guide rod 31, the connector 30 is disposed at the upper end of the elastic column 28, the elastic column 28 is inserted into the connector 30, and generates an elastic force on the inner wall of the connector 30, so as to fix the connector 30 and the connector 30, and the force line rod 5, the connecting rod 29 and the short guide rod 31 are disposed at the upper end of the connector 30.

Referring to fig. 9, the latch 6 includes a sleeve 32 and elastic arms 33, the sleeve 32 is sleeved on the force line rod 5, the elastic arms 33 are disposed at the lower end of the sleeve 32, the elastic arms 33 are curved, and the middle sections of the elastic arms 33 interfere with the force line rod 5, so that elastic force is generated between the elastic arms 33 and the force line rod 5 to fix the force line rod 5 on the measuring block body 1.

The working principle of the invention is as follows: when the device is used for measuring the gap in the knee joint replacement operation, firstly, the height adjusting mechanism 3 is used for adjusting the measuring block body 1 and the adjusting block 2 to proper thickness, then the force line rod 5 is inserted into the waist-shaped hole 4, the lock catch 6 is sleeved on the force line rod 5, the rotary drum 7 and the force line rod 5 are fixed, so that the force line rod 5 is fixed in height, then the measuring block body 1 and the adjusting block 2 are inserted into the gap of the knee joint for measurement, if the thickness of the measuring block body 1 and the thickness of the adjusting block 2 are not proper, the height adjusting mechanism 3 is adjusted again, namely, the thickness of the measuring block body 1 and the thickness of the adjusting block 2 are adjusted until the thicknesses are proper;

if the position of the force line rod 5 is not proper, the force line rod 5 can be inserted into the force line hole 24, the position of the force line rod 5 is adjusted, then the lock catch 6 is sleeved on the force line rod 5, the force line rod 5 and the adjusting block 2 are fixed, the height of the force line rod 5 is fixed, and the thickness can be adjusted by the height adjusting mechanism 3 at any time in the process;

the operation principle of the height adjusting mechanism 3 is as follows: the rotating cylinder 7 is rotated by external force, the ring groove 9 rotates along the fixing pin 11, the measuring block body 1 and the fixing cylinder 8 are static, the guide pin 12 is guided by the spiral groove 10 to ascend or descend, meanwhile, the guide pin 12 drives the adjusting block 2 to ascend or descend, a gap is generated between the measuring block body and the adjusting block 2, and the common thickness of the measuring block body and the adjusting block 2 is adjusted to change.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A clearance gauge block, its characterized in that: including surveying block body (1), survey block body (1) inside upper end and be provided with regulating block (2), be provided with high adjustment mechanism (3) in the middle of surveying block body (1) and regulating block (2), be provided with waist shape hole (4) in high adjustment mechanism (3), insert power line pole (5) in waist shape hole (4), hasp (6) have been cup jointed on power line pole (5), high adjustment mechanism (3) are including rotary drum (7), solid fixed cylinder (8), annular (9), helicla flute (10), fixed pin (11), guide pin (12), rotary drum (7) are located in the middle of regulating block (2), gu fixed cylinder (8) are located inside rotary drum (7), the position of rotary drum (7) lower part and survey block body (1) contact is provided with annular (9), the position of rotary drum (7) middle part and regulating block (2) contact is provided with helicla flute (10), pass in annular (9) and be provided with fixed pin (11), be provided with in the helicla flute (12).

2. A gap measuring block according to claim 1, wherein: fixed pin (11) and survey between the piece body (1) and fix through a pin (13), fixed pin (11) and fixed section of thick bamboo (8) are fixed through No. two pins (14), it is fixed through No. three pins (15) between guide pin (12) and regulating block (2).

3. A gap measuring block according to claim 1, wherein: scales (16) are arranged on one side, exposed out of the upper portion of the adjusting block (2), of the rotary drum (7), and a pointer (17) is arranged on one side, corresponding to the scales (16), of the adjusting block (2).

4. A gap measuring block according to claim 1, wherein: the measuring block is characterized in that a compensation block (18) is arranged at the lower end of the measuring block body (1), a plurality of cylindrical grooves (19) are formed in the two sides of the measuring block body (1) and the two sides of the adjusting block (2), fan-shaped grooves (20) are formed in the outer edges of the two sides of the measuring block body (1), clamping columns (21) are arranged at the positions, corresponding to the compensation block (18) and the cylindrical grooves (19), of the clamping columns (21), ferrules (22) are arranged on the clamping columns (21), and fan-shaped protrusions (23) are arranged at the positions, corresponding to the compensation block (18) and the fan-shaped grooves (20).

5. A gap measuring block according to claim 1, wherein: two force line holes (24) are formed in the two sides, located in the waist-shaped holes (4), of the measuring block body (1) and the adjusting block (2), and the waist-shaped holes (4) are formed in the fixed cylinder (8).

6. A gap measuring block according to claim 1, wherein: and gaps (25) are also arranged on the two sides of the measuring block body (1) and the adjusting block (2).

7. A gap measuring block according to claim 1, wherein: power line pole (5) are including long guide arm (26), guide pin head (27), bullet post (28), long guide arm (26) are located waist shape hole (4), guide pin head (27) set up in long guide arm (26) upper end, guide pin head (27) upper end is provided with bullet post (28).

8. The gap sensing block of claim 7, wherein: the utility model discloses a power line pole, including power line pole (5), connecting rod (29) are provided with connecting rod (29), connecting rod (29) are including connector (30), short guide bar (31), connector (30) set up in bullet post (28) upper end, short guide bar (31) set up in connector (30) upper end.

9. The gap sensing block of claim 7, wherein: hasp (6) include sleeve (32) and play arm (33), sleeve (32) cup joint on power line pole (5), sleeve (32) lower extreme is provided with a plurality of bullet arms (33), bullet arm (33) are the curved surface form.