CN210170237U

CN210170237U - Efficient durable cleaning device suitable for hip socket renovation

Info

Publication number: CN210170237U
Application number: CN201920638476.6U
Authority: CN
Inventors: Chuan Li; 李川; Ting Chen; 陈婷; Di Du; 杜棣; Xinming Xu; 徐昕明; Zixi Dong; 董自西; Mo Ruan; 阮默
Original assignee: 92nd Hospital Of Joint Logistics Support Force Of Chinese People's Liberation Army
Current assignee: 92nd Hospital Of Joint Logistics Support Force Of Chinese People's Liberation Army
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-03-24
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a high-efficiency durable cleaning device suitable for renovating an acetabulum socket of a hip joint, which comprises a positioning head, a connecting rod, a traction piece, an adjusting rod, a rotating handle and a finishing knife, the positioning head is of a dome-shaped structure and is rotationally connected with a connecting rod, the other end of the connecting rod is connected with a power tool, the trimming knife comprises a knife head and a knife handle, the knife head is of an arc structure and is fixedly connected with the knife handle, the other end of the knife handle is hinged with a connecting rod positioned at the dome-shaped center of the positioning head, the center of the arc-shaped structure of the knife head is superposed with the dome-shaped center of the positioning head, one end of the traction piece is hinged with the middle part of the knife handle, the other end of the traction piece is hinged with the adjusting rod, one side of the connecting rod far away from the positioning head is rotatably sleeved with a rotating handle, the arc-shaped front end of the cutter head is of a triangular thorn-shaped structure, namely, the upper projection is in the shape of an isosceles triangle, and the cross section is in the shape of an isosceles triangle. The utility model has the characteristics of simple structure, adjustment are nimble, the location is accurate, the trimming efficiency is high.

Description

Efficient durable cleaning device suitable for hip socket renovation

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to simple structure, adjustment are nimble, the location is accurate, the efficient durable type cleaning device who is suitable for the renovation of hip joint's acetabulum nest that repaiies is high.

Background

The hip joint (hip joint) is a multiaxial joint capable of flexion, extension, contraction, rotation and rotation. The hip joint is formed by the relative position of a femoral head and an acetabulum, and the femoral head is deeply embedded in the acetabulum and belongs to an acetabular joint. Only the lunar surface in the acetabulum is covered with articular cartilage, and the edge of the acetabulum is provided with a glenoid rim which is attached to deepen the depth of an acetabulum fossa. The hip joint replacement is also called artificial hip joint replacement, is to fix an artificial prosthesis comprising a femur part and an acetabulum part on normal bone by using bone cement, screws and the like to replace a diseased joint and reconstruct the normal function of the hip joint of a patient, and is a mature and reliable treatment means. Due to the 'timeliness' of the artificial prosthesis and the complications caused by the operation, the current cases of hip revision surgery are increased gradually. The incidence of revision in the 1 st 15 years after total hip replacement was reported to be about 10% due to failure of the acetabular prosthesis. In hip replacement or revision surgery, the acetabulum of the hip joint is reamed by a reamer, acetabular file, or like tool to provide a socket-shaped mounting surface that corresponds to the size and curvature of the femoral head of a natural or revision femur or femoral implant. After being appropriately sized and shaped to the prepared mounting surface, an acetabular cup (acetabular shell) may be mounted to the mounting surface to provide a bearing surface for the femoral head. Generally, the acetabular cup comprises a semi-spherical metal reinforced outer cup and a matching inner cup, and after a certain period of implantation, the inner cup is worn to cause poor contact with the outer cup, so that the inner cup needs to be replaced. After the cup is placed for a period of time, bones can grow into the space between the outer cup and the inner cup, so that the outer cup and the inner cup are combined tightly. In order to replace the inner cup, the inner cup in the outer cup needs to be taken out firstly, in the prior art, redundant bones are removed through knocking one by one to take out the inner cup, the replacement efficiency of the inner cup is low, doctors are required to judge the inner cup according to experience, the judgment from the experience is often insufficient in accuracy, the strength and the angle are difficult to master, bones needing to be reserved are often damaged, and the matching between the new inner cup and the original outer cup after the renovation is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses problem and not enough to prior art exist provides a simple structure, adjustment flexibility, location accuracy, especially the higher high-efficient durable type cleaning device who is suitable for acetabular fossa renovation of hip joint of repairing efficiency.

The utility model discloses a realize like this: comprises a positioning head, a connecting rod, a traction piece, an adjusting rod, a rotating handle and a finishing cutter, wherein the positioning head is of a dome-shaped structure, the inner wall of the positioning head is rotatably connected with one end of the connecting rod, the other end of the connecting rod is connected with a power tool, one side of the connecting rod, which is far away from the positioning head, is rotatably sleeved with a rotating handle, the inner wall of the rotating handle is provided with a sliding groove, the adjusting rod passes through the rotating handle, the other end of the adjusting rod is fixedly provided with a bulge matched with the sliding groove, the trimming knife comprises a knife head and a knife handle, the knife head is of an arc structure, one end of the knife head is fixedly connected with one end of the knife handle, the other end of the cutter handle is hinged with a connecting rod positioned at the dome-shaped center of the positioning head, the center of the arc-shaped structure of the cutter head is superposed with the dome-shaped center of the positioning head, one end of the traction piece is hinged with the middle part of the cutter handle, and the other end of the traction piece is hinged with one end of the adjusting rod; the arc-shaped front end of the cutter head is of a triangular thorn-shaped structure, namely, the upper projection is in the shape of an isosceles triangle, and the cross section is in the shape of an isosceles triangle.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses a location head and the interior cup of acetabular cup are laminated mutually and are fixed a position and form the fulcrum, ingenious through with the tool bit arc structure center of finishing knife with the coincidence of location head center, drive the finishing knife with power tool and rotate around the location head, reach the unnecessary bone between interior cup and the outer cup of quick, accurate excision acetabular cup, the finishing process is easy to operate, the whole finishing is effectual, the face after finishing is more close spherical; the trimming knife is driven by a power tool to cut off, the force in the cutting process is uniform and controllable, and the bone to be reserved cannot be damaged.

2. The utility model discloses a twist grip pulling adjusting lever reciprocates the degree of depth that cuts into that adjusts the finishing knife, and adjusting lever and finishing knife can rotate jointly with the connecting rod again simultaneously to can make the controllable, continuous degree of depth excision bone gradually of finishing knife, can guarantee that the excision dynamics is even controllable in order to guarantee the quality of excision, can guarantee again that the finishing knife can not damage because of the excision power is too big and influence the operation process, and can continuous feed can effectively improve excision efficiency and can improve the excision quality again.

3. The utility model discloses an arc front end of tool bit adopts two isosceles triangle thorn shape structures, and not only structural strength is high, two-way cutting ability is strong, and cleaning efficiency is higher moreover, and spine cone knife head portion is favorable to cutting into gap portion to play the pinch bar effect, difficult cutting between the inner and outer ring when having overcome prior art crew cut knife tip and using, the unclean drawback of clearance.

Therefore, the utility model has the characteristics of simple structure, adjustment are nimble, the location is accurate, and the clearance is swift clean, has especially improved its efficiency of repairing greatly, especially adopts removable triangle thorn shape structure, can grind after the compound cutting edge of a knife or a sword used repeatedly a plurality of times, has effectively reduced use cost.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a perspective view of the trimming knife shown in FIG. 1;

FIG. 4 is a partial cross-sectional structural view of FIG. 1;

FIG. 5 is a view of the A direction of the bit map 3, i.e., a projected view onto the triangular thorn-shaped structure of the bit;

FIG. 6 is a view along direction BB of FIG. 5, i.e., a cross-sectional elevation view of the triangular thorn-shaped configuration of the cutting head;

FIG. 7 is a side cross-sectional view taken along direction DD of FIG. 5, showing the triangular thorn-shaped formation of the tool tip;

in the figure: 1-positioning head, 101-spherical top, 102-cylindrical side, 2-connecting rod, 201-guide groove, 202-groove, 203-power tool connecting part, 3-traction part, 4-adjusting rod, 401-bulge, 402-guide rod, 5-rotating handle, 501-sliding groove, 6-trimming knife, 601-tool bit, 602-tool handle, 603-positioning groove, 604-fastening screw, 7-connector, 701-yielding part and 8-guide ring.

Detailed Description

The present invention is further described with reference to the following drawings and examples, but the present invention is not limited thereto in any way, and any modification or improvement based on the teaching of the present invention is within the protection scope of the present invention.

As shown in fig. 1 to 7, the utility model relates to a high-efficiency durable cleaning device suitable for hip socket renovation of hip joint, which comprises a positioning head 1, a connecting rod 2, a traction piece 3, an adjusting rod 4, a rotating handle 5 and a finishing knife 6, wherein the positioning head 1 is a dome-shaped structure, the inner wall of the positioning head is rotationally connected with one end of the connecting rod 2, the other end of the connecting rod 2 is connected with a power tool, one side of the connecting rod 2 away from the positioning head 1 is rotatably sleeved with the rotating handle 5, the inner wall of the rotating handle 5 is provided with a sliding groove 501, the adjusting rod 4 passes through the rotating handle 5, the other end of the adjusting rod is fixedly provided with a protrusion 401 matched with the sliding groove 501, the finishing knife 6 comprises a knife head 601 and a knife handle 602, the knife head 601 is of arc-shaped structure, one end of the knife head is fixedly connected with one end of the knife handle 602, the other end of, the center of the arc-shaped structure of the cutter head 601 is superposed with the center of the dome shape of the positioning head 1, one end of the traction piece 3 is hinged with the middle part of the cutter handle 602, and the other end of the traction piece is hinged with one end of the adjusting rod 4; the arc-shaped front end of the tool bit 601 is a triangular thorn-shaped structure, i.e. the upper projection is an isosceles triangle and the cross section is an isosceles triangle.

The arc-shaped front end of the tool bit 601 is a triangular thorn-shaped structure, i.e. the vertex angle of the upper projection isosceles triangle is 80-160 degrees, the vertex angle of the cross section isosceles triangle is 90-170 degrees, and the vertex angle is a gradual change form from the tool tip to the root, and the gradual change range is 170 degrees to 90 degrees.

The vertex angle of the upper projection isosceles triangle is 90-145 degrees.

The vertex angle of the isosceles triangle with the cross section is 110-145 degrees.

The vertex angle of the isosceles triangle with the cross section is in a gradual change form from 170 degrees to 90 degrees from the tool tip to the root.

The triangular thorn-shaped structure at the arc-shaped front end of the cutter head 601 is a replaceable part, and is in a splicing close fit structure with the rear part of the cutter head 601 (the point C in the figures 3 and 5 is a splicing part).

As shown in FIG. 7, the side view of the blade tip part of the triangular thorn-shaped structure is in a circular arc conical shape, and the radius of the circular arc is 15-40 mm.

The vertex angle of the tip portion of the side-looking arc-shaped conical cutter is 5-35 degrees.

The connecting end of the connecting rod 2, which is close to the power tool, is provided with a guide groove 201 or a guide hole along the axial direction, and the adjusting rod 4 is fixedly provided with a guide rod 402 which is in sliding fit with the guide groove 201 or the guide hole.

The guide groove 201 is provided with scales of different depths for feeding the dressing cutter 6 along the axial direction.

The connecting rod 2 is symmetrically provided with at least one group of guide grooves 201 or guide holes, and the adjusting rod 4 is at least fixedly provided with two guide rods 402 which are in sliding fit with the guide grooves 201 or the guide holes.

The dome-shaped structure of the positioning head 1 comprises a spherical top part 101 and a cylindrical or frustum-shaped side part 102, the center of the arc-shaped structure of the cutter head 601 is coincident with the center of the spherical top part 101, and the spherical top part 101 is adapted to the curvature and the size of the inner cup of the acetabular cup.

The connecting rod 2 is a tubular structure or is provided with a groove 202 along the axial direction, and the adjusting rod 4 is slidably arranged in the tubular structure of the connecting rod 2 or in the groove 202.

The connecting end of the knife handle 602 and the knife head 601 is provided with a positioning groove 603, and the connecting end of the knife head 601 is embedded into the positioning groove 603 and is fixedly connected with the knife handle 602 through a fastening device.

The cutting edges of the cutter head 601 are arranged on one side or two sides of the arc-shaped structure, the cutting edges are of a saw-toothed structure, and a vibration driving device for driving the adjusting rod 4 to vibrate along the axial direction is fixedly arranged in the connecting rod 2 or the rotating handle 5.

The fixed connector 7 that is provided with of one end of the nearly location head 1 of connecting rod 2, the other end of connector 7 and the inner wall swivelling joint of location head 1, the other end of handle of a knife 602 is articulated with the connector 7 that is located the dome-shaped center department of location head 1.

And a yielding part is arranged between the hinged part of the tool handle 602 and the hinged parts of the adjusting rod 4 and the traction piece 3 on one side of the connecting rod 2 or the connecting head 7 facing the dressing tool 6.

The yielding part of the connecting rod 2 or the connecting head 7 is in a side V-shaped structure or C-shaped structure.

The utility model discloses a theory of operation and working process:

the utility model positions the acetabulum cup through the joint of the positioning head and the inner cup of the acetabulum cup to form a pivot, ingeniously coincides the center of the positioning head through the arc structure of the cutter head of the dressing cutter, and the dressing cutter is driven by a power tool to rotate around the positioning head, so as to rapidly and accurately cut off redundant bones between the inner cup and the outer cup of the acetabulum cup; the trimming knife is driven by a power tool to perform cutting, the cutting force is uniform and controllable, and the bone to be reserved cannot be damaged; the adjusting rod is pulled by the rotating handle to move up and down to adjust the cutting-in depth of the trimming knife, and meanwhile, the adjusting rod and the trimming knife can rotate together with the connecting rod, so that the trimming knife can cut bones in a controllable and continuous gradual depth manner, uniform and controllable cutting force can be ensured to ensure the cutting quality, the trimming knife can be prevented from being damaged due to overlarge cutting force to influence the operation process, and the continuous feeding can effectively improve the cutting efficiency and the cutting quality; the arc front end of tool bit adopts the triangle thorn shape structure of two isosceles, and not only structural strength is high, two-way cutting ability is strong, and cleaning efficiency is higher moreover, and spine toper tool bit portion is favorable to cutting into the gap portion to play the pinch bar effect, difficult cutting between the inner and outer ring when having overcome prior art flat head tool tip and using, the drawback of clearance unclean. Furthermore, the vertex angle of the upper projection isosceles triangle of the triangular thorn-shaped structure is 80-160 degrees, the vertex angle of the cross section isosceles triangle is 90-170 degrees, and the cutting capability of the cutting edge can be effectively improved by adopting a large vertex angle structure under the condition of ensuring the strength of the cutter tip; the vertex angle of the isosceles triangle with the cross section is in a gradual change form from the tip to the root, the gradual change range is 170 degrees to 90 degrees, a thin and sharp cutting edge can be formed at the tip, and a strong support is formed at the rear part of the tip, so that the cutting gap part is favorably cut, and the defect that the flat tip is not easy to cut between an inner ring and an outer ring and is not clean when the flat tip in the prior art is used is further overcome. Furthermore, the arc-shaped front end of the cutter head is of a replaceable triangular thorn-shaped structure and is in a splicing tight fit structure with the rear part of the arc-shaped front end of the cutter head, so that the triangular thorn-shaped structure can be repeatedly used for a plurality of times after being ground and sharpened, and the use cost is effectively reduced. Furthermore, the positioning head comprises a spherical top part, a cylindrical or frustum-shaped side part, and the center of the arc-shaped structure of the tool bit is superposed with the center of the spherical top part, so that the curvature change of the trimmed bone surface cannot be caused by adjusting the cutting depth at any time, and the trimmed matching quality can be effectively improved; the spherical top is matched with the curvature and the size of the inner cup of the acetabulum cup, and the positioning precision and the stability during trimming can be ensured. Furthermore, the connecting end of the cutter head is embedded into the positioning groove of the cutter handle and is fixedly connected with the cutter handle through the fastening device, so that the accurate positioning and flexible replacement of the cutter head can be realized. Furthermore, the cutting edges of the cutter head are of a saw-toothed structure, and a vibration driving device for driving the adjusting rod to vibrate along the axial direction is fixedly arranged in the connecting rod or the rotating handle, so that the trimming cutter can rotate as required and simultaneously form a sawing effect, the stress of the trimming cutter can be effectively reduced, the service life and the reliability are prolonged, and the quality of a cutting surface can be improved. Furthermore, a connector is fixedly arranged at one end of the connecting rod close to the positioning head, and the positioning head and the knife handle are connected through the connector, so that the overall structure of the connecting rod can be simplified, and the connector can limit the adjusting rod; the side of the connecting rod or the connecting head facing the trimming knife is provided with a line yielding part between the handle hinging part and the adjusting rod and traction piece hinging part, so that the line yielding part can expand the adjusting range of the trimming knife, and the structure and the size of the line yielding part can also form restraint on the adjusting range of the trimming knife, thereby avoiding excessive idle stroke from influencing the adjusting efficiency. To sum up, the utility model has the characteristics of simple structure, adjustment are nimble, the location is accurate, the clearance is swift clean, the repairment is efficient.

As shown in fig. 1 to 7, according to the specification of the patient's acetabular cup, the positioning head 1 corresponding to the top end of the connecting rod 2 is adjusted by the quick-change component and the corresponding tool bit 601 is replaced by the positioning groove 603 and the fastening screw 604, and then the connecting rod 2 is connected with a power tool (such as a hand drill) by the quick-change component. The spherical top part 101 of the positioning head 1 is tightly attached to the inner wall of the inner cup of the acetabular cup, and the cutter head 601 of the trimming knife 6 is driven by the adjusting rod 4 to be inserted between the inner cup and the outer cup of the acetabular cup by moving the rotating handle 5 up and down. Starting the power tool to drive the adjusting rod 4 and the correcting knife 6 which are embedded into the groove 202 of the power tool to rotate through the connecting rod 2, and rotationally cutting the bone between the inner cup and the outer cup; when the acetabulum cup is cut in a rotating mode, a doctor gradually presses down the rotating handle 5 according to needs, the adjusting rod 4 is driven downwards by the pressing of the rotating handle 5 through the matching of the sliding groove 501 and the protrusion 401, and the adjusting rod 4 drives the cutter head 601 of the dressing knife 6 to gradually penetrate into the space between the inner cup and the outer cup around the hinged point of the cutter handle 602 and the connecting rod 2 through the traction piece 3 so as to cut off bones with preset depth and achieve the purposes of separating the inner cup of the acetabulum cup and finishing bone dressing.

Claims

1. A high-efficiency durable cleaning device suitable for trimming an acetabulum socket of a hip joint comprises a positioning head (1), a connecting rod (2), a traction piece (3), an adjusting rod (4), a rotating handle (5) and a trimming knife (6), wherein the positioning head (1) is of a dome-shaped structure, the inner wall of the positioning head is rotatably connected with one end of the connecting rod (2), the other end of the connecting rod (2) is connected with a power tool, one side of the connecting rod (2) far away from the positioning head (1) is rotatably sleeved with the rotating handle (5), the inner wall of the rotating handle (5) is provided with a sliding groove (501), the adjusting rod (4) penetrates through the rotating handle (5), the other end of the adjusting rod is fixedly provided with a bulge (401) matched with the sliding groove (501), the trimming knife (6) is characterized by comprising a knife head (601) and a knife handle (602), the knife head (601) is of an arc-shaped structure, and one end, the other end of the cutter handle (602) is hinged with a connecting rod (2) located at the dome-shaped center of the positioning head (1), the center of the arc-shaped structure of the cutter head (601) is overlapped with the dome-shaped center of the positioning head (1), one end of the traction piece (3) is hinged with the middle of the cutter handle (602), and the other end of the traction piece is hinged with one end of the adjusting rod (4); the arc-shaped front end of the cutter head (601) is of a triangular thorn-shaped structure, namely, the upper projection is in the shape of an isosceles triangle, and the cross section of the upper projection is in the shape of an isosceles triangle.

2. The efficient durable cleaning device for trimming acetabular fossa of hip joint as claimed in claim 1, wherein said tip (601) has a triangular thorn shape at its front end, i.e. the top angle of the isosceles triangle is 80-160 ° and the top angle of the isosceles triangle is 90-170 ° and the top angle is gradually changed from the tip to the root.

3. The highly effective durable type of cleaning device for acetabulum socket revision of hip joint as claimed in claim 1, wherein said triangular thorn shaped structure of the curved front end of the cutting head (601) is a replaceable component, and adopts a plug-fit tight fit structure with the rear portion of the curved front end of the cutting head (601); the side view of the knife point part of the triangular thorn-shaped structure is in an arc taper shape, and the radius of the arc is 15-40 mm.

4. The highly effective and durable cleaning device for acetabular socket revision of the hip according to claim 1 wherein the dome-like configuration of the positioning head (1) comprises a spherical top portion (101), cylindrical or frustoconical side portions (102), the spherical top portion (101) conforming to the inner cup curvature and size of the acetabular cup, the center of the arcuate configuration of the cutting head (601) coinciding with the center of the spherical top portion (101).

5. The efficient and durable cleaning device for the acetabulum socket renovation of hip joint according to any one of claims 1-4, characterized in that the connecting end of the connecting rod (2) near the power tool is provided with a guide groove (201) or a guide hole along the axial direction, the adjusting rod (4) is fixedly provided with a guide rod (402) which is in sliding fit with the guide groove (201) or the guide hole, and the guide groove (201) is provided with scales of different depths for feeding the renovating knife (6) along the axial direction; the connecting rod (2) is of a tubular structure or is provided with a groove (202) along the axial direction, and the adjusting rod (4) can be slidably arranged in the tubular structure of the connecting rod (2) or in the groove (202).

6. The highly effective and durable cleaning device for acetabulum socket revision of hip joint according to claim 5, wherein the connecting end of the handle (602) and the cutting head (601) is provided with a positioning groove (603), and the connecting end of the cutting head (601) is embedded into the positioning groove (603) and fixedly connected with the handle (602) through a fastening device.

7. The highly effective durable cleaning device for acetabulum socket revision of hip joint according to claim 5, wherein the cutting edge of the cutting head (601) is arranged on one side or two sides of the arc structure, the cutting edge is of a saw-tooth structure, and a vibration driving device for driving the adjusting rod (4) to vibrate along the axial direction is fixedly arranged in the connecting rod (2) or the rotating handle (5).

8. The highly efficient and durable cleaning device suitable for acetabulum socket renovation of hip joint according to claim 5, characterized in that one end of the connecting rod (2) near the positioning head (1) is fixedly provided with a connector (7), the other end of the connector (7) is rotatably connected with the inner wall of the positioning head (1), and the other end of the handle (602) is hinged with the connector (7) located at the dome-shaped center of the positioning head (1).

9. The highly effective and durable cleaning device for the revision of acetabular fossa of the hip joint as claimed in claim 8, characterized in that the side of the connecting rod (2) or connecting head (7) facing the dresser (6) is provided with a clearance between the articulation of the shank (602) and the articulation of the adjusting rod (4) and the pulling element (3).

10. The highly effective and durable cleaning device for acetabulum socket revision of hip joint according to claim 9, wherein the abduction portion of the connecting rod (2) or connector (7) is in a side "V" configuration or a "C" configuration.