CN212037618U - Drag hook supporting device for joint operation - Google Patents
Drag hook supporting device for joint operation Download PDFInfo
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- CN212037618U CN212037618U CN202020229333.2U CN202020229333U CN212037618U CN 212037618 U CN212037618 U CN 212037618U CN 202020229333 U CN202020229333 U CN 202020229333U CN 212037618 U CN212037618 U CN 212037618U
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- shaft hole
- hole seat
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- bottom plate
- arc bending
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Abstract
The utility model provides a drag hook strutting arrangement for joint operation, includes a bottom plate, a support riser, a circular arc bending plate of setting on the bottom plate and supporting the riser upper end, the upper and lower end of supporting the riser is equipped with primary shaft hole seat respectively, the arc top of circular arc bending plate is upwards, and circular arc bending plate stiff end is equipped with secondary shaft hole seat, passes secondary shaft hole seat and the primary shaft hole seat that supports the riser upper end with first bolt, through first nut locking, but make circular arc bending plate circumferential direction location be connected fixedly with supporting the riser, one side of bottom plate is equipped with tertiary shaft hole seat, passes tertiary shaft hole seat and the primary shaft hole seat that supports the riser lower extreme with the second bolt, through second nut locking, but make support the riser circumferential direction location be connected fixedly with the bottom plate.
Description
Technical Field
The utility model relates to a medical instrument technical field for orthopedic joint replacement surgery, in particular to a drag hook strutting arrangement for joint surgery.
Background
The artificial joint is developed in the beginning of the 40 s abroad and gradually in China after the 60 s, the replacement of the artificial hip joint and the knee joint is considered as a treatment method with very positive effect in the replacement of the artificial joint, and the replacement of other artificial joints such as the artificial elbow joint, the artificial shoulder joint, the artificial vertebral body and the artificial pelvis is developed in different degrees. The artificial hip joint replacement is an operation of replacing a joint surface damaged by a disease or an injury with a femoral head prosthesis and an acetabular prosthesis, and aims to excise a focus, remove pain and restore the movement and the original function of a joint. The therapeutic efficacy of hip replacement surgery has been well established and developed as a reliable treatment in many years of clinical practice. Direct Anterior Approach (DAA) total hip replacement is the Approach of minimally invasive total hip replacement surgery which is increasingly widely used at present. Compared with the traditional operation, the total hip replacement under the DAA approach is to expose the hip joint from the gap approach of the tensor fascia latae and the rectus femoris, has the advantages of small soft tissue injury, quick postoperative recovery, short hospitalization time and the like, and has obvious early curative effect. At present, a plurality of large sample research data show that the total hip replacement under the DAA approach can obviously promote the postoperative accelerated recovery of patients. With the aging society of China, the total number of patients who undergo total hip arthroplasty in China increases year by year, and the minimally invasive nature of DAA will be more and more emphasized. Visualization of the proximal end of the femur is a crucial step during surgery for total hip replacement with DAA access. The existing method is mainly to place a trochanter bifurcate retractor between the proximal end of the femur and the posterior muscle, take the complex of the tensor fasciae latae and the soft tissues such as skin as a fulcrum, press down the tail end of the bifurcate retractor in a prying mode, and lift the proximal end of the femur to about 15 degrees of inclination. However, the operation mode has great disadvantages, in the prying process, the tensor fascia lata can receive great force, and some old patients are easy to tear muscles, excessively injure soft tissues and the like due to the fact that the soft tissue structure is loose and the double-fork drag hook is pressed down, so that the postoperative rehabilitation and the functional exercise of the patients are very unfavorable.
Disclosure of Invention
The utility model discloses a solve the problem that above prior art exists, provide a drag hook strutting arrangement for joint operation, can protect soft tissue around the joint effectively when exposing the operation field, the technical scheme of the utility model as follows:
the utility model provides a drag hook strutting arrangement for joint operation, includes a bottom plate, a support riser, a circular arc bending plate of setting on the bottom plate and supporting the riser upper end, the upper and lower end of supporting the riser is equipped with primary shaft hole seat respectively, the arc top of circular arc bending plate is upwards, and circular arc bending plate stiff end is equipped with secondary shaft hole seat, passes secondary shaft hole seat and the primary shaft hole seat that supports the riser upper end with first bolt, through first nut locking, but make circular arc bending plate circumferential direction location be connected fixedly with supporting the riser, one side of bottom plate is equipped with tertiary shaft hole seat, passes tertiary shaft hole seat and the primary shaft hole seat that supports the riser lower extreme with the second bolt, through second nut locking, but make support the riser circumferential direction location be connected fixedly with the bottom plate.
The widths of the arc bending plate, the supporting vertical plate and the bottom plate are the same, and the axial lengths of the first shaft hole seat, the second shaft hole seat and the third shaft hole seat are respectively half of the widths.
The width of the arc bending plate, the width of the supporting vertical plate and the width of the bottom plate are 8-12 cm, the length of the bottom plate is not less than 28 cm, the radius of the arc bending plate is 2-3 cm, and the height of the supporting vertical plate is 8-12 cm.
And opposite shaft end faces among the first shaft hole seat, the second shaft hole seat and the third shaft hole seat are provided with circumferential positioning structures for preventing rotation.
The circumferential positioning structure for preventing rotation is an end face spline which is correspondingly arranged on the shaft end faces of the first shaft hole seat, the second shaft hole seat and the third shaft hole seat.
The circumferential positioning structure for preventing rotation is a plurality of radial grooves uniformly distributed on the end surface of the first shaft hole seat, and convex keys arranged on the end surfaces of the second shaft hole seat and the third shaft hole seat; or the circumferential positioning structure for preventing rotation is a plurality of radial grooves uniformly distributed on the end faces of the second shaft hole seat and the third shaft hole seat, and the end face of the first shaft hole seat is provided with a convex key.
The number of the radial grooves is at least 8, and the number of the convex keys is at least 1.
Adopt above-mentioned technical scheme: the device comprises a bottom plate, a supporting vertical plate arranged on the bottom plate and an arc bending plate arranged at the upper end of the supporting vertical plate, wherein the bottom plate is arranged below the limb of a joint part of a patient when in use, the bottom plate is pressed by the weight of the limb to play a role of stabilizing the whole device, the upper end and the lower end of the supporting vertical plate are respectively provided with a first shaft hole seat, the arc top of the arc bending plate is upward, the fixed end of the arc bending plate is provided with a second shaft hole seat, a first bolt penetrates through the second shaft hole seat and the first shaft hole seat at the upper end of the supporting vertical plate and is locked by a first nut to enable the arc bending plate to be circumferentially positioned and fixedly connected with the supporting vertical plate, one side of the bottom plate is provided with a third shaft hole seat, a second bolt penetrates through the third shaft hole seat and the first shaft hole seat at the lower end of the supporting vertical plate and is locked by, can be according to every patient's limb size, with the circular arc crooked board, support the riser and adjust suitable angle, relock first nut, the second nut, just can keep whole device at a fixed height's firm state, the fulcrum of drag hook can be regarded as to the circular arc crooked board, can also shelter from patient's tensor fascia lata, can avoid direct tensor fascia lata with the patient when using bifurcate drag hook sled thighbone, soft tissue complexes such as skin are as the fulcrum, the muscle that appears when having prevented tensor fascia lata from receiving great power is torn easily, phenomenon such as excessive injury of soft tissue, can play effectual guard action to patient especially the loose old patient of soft tissue structure, do benefit to the recovered and functional training of patient's postoperative.
The widths of the arc bending plate, the supporting vertical plate and the bottom plate are the same, and the axial lengths of the first shaft hole seat, the second shaft hole seat and the third shaft hole seat are respectively half of the width, so that the strength of a connecting part is ensured, and the stability is improved.
The shaft end face in opposite directions between first shaft hole seat, second shaft hole seat, the third shaft hole seat is equipped with rotation-preventing circumference location structure, through rotation-preventing circumference location structure, can avoid the locking dynamics not enough and cause circular arc bending plate, support riser, bottom plate to take place relative rotation, unable steady fixed state that keeps after locking with the bolt-up.
The circumferential positioning structure for preventing rotation is an end face spline which is correspondingly arranged on the shaft end faces of the first shaft hole seat, the second shaft hole seat and the third shaft hole seat. Or the circumferential positioning structure for preventing rotation is a plurality of radial grooves uniformly distributed on the end surface of the first shaft hole seat, and convex keys arranged on the end surfaces of the second shaft hole seat and the third shaft hole seat; or the circumferential positioning structure for preventing rotation is a plurality of radial grooves uniformly distributed on the end faces of the second shaft hole seat and the third shaft hole seat, and the end face of the first shaft hole seat is provided with a convex key. The spline fit of the end face or the fit of the groove and the convex key of the end face is adopted, so that after the height of the draw hook fulcrum is adjusted through the angle adjustment among the arc bending plate, the supporting vertical plate and the bottom plate, the device is more stable and reliable in the operation under the locking state of the first nut and the second nut.
The number of the radial grooves is at least 8, the number of the convex keys is at least 1, and the heights of the fixed supporting points can be adjusted by a plurality of angles. Of course, the more the number of the radial grooves is, the more the angle can be adjusted, the more the state of adapting to the height change of the fulcrum in the operation is, and the more the number of the convex keys is, the higher the strength of circumferential positioning and fixing is.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
FIG. 1 is a schematic view of the present invention in use;
fig. 2 is a left side view of the present invention;
FIG. 3 is a schematic structural view of a supporting vertical plate;
FIG. 4 is a view from the B-B direction of FIG. 3;
FIG. 5 is a schematic structural view of a curved plate;
FIG. 6 is a view taken along line A-A of FIG. 5;
FIG. 7 is a schematic structural view of a base plate;
fig. 8 is a view in the direction of C-C of fig. 7.
Detailed Description
The utility model discloses an embodiment of drag hook strutting arrangement for joint operation:
referring to fig. 1-8, a retractor supporting device for joint surgery comprises a bottom plate 4, a supporting vertical plate 3 arranged on the bottom plate 4, an arc bending plate 1 arranged on the upper end of the supporting vertical plate 3, the upper end and the lower end of the supporting vertical plate 3 are respectively provided with a first shaft hole seat 6, the arc top of the arc bending plate 1 is upward, the fixed end of the arc bending plate 1 is provided with a second shaft hole seat 2, a first bolt 11 penetrates through the second shaft hole seat 2 and the first shaft hole seat 6 at the upper end of the supporting vertical plate 3, the arc bending plate 1 can be circumferentially positioned and connected and fixed with the supporting vertical plate 3 through the locking of the first nut 7, one side of the bottom plate 4 is provided with a third shaft hole seat 5, a second bolt 12 penetrates through the third shaft hole seat 5 and the first shaft hole seat 6 at the lower end of the supporting vertical plate 3, and the supporting vertical plate 3 can be circumferentially positioned and fixedly connected with the bottom plate 4 by locking through a second nut 13. The axial end faces opposite to each other among the first axial hole seat 6, the second axial hole seat 2 and the third axial hole seat 5 are provided with circumferential positioning structures for preventing rotation, so that the phenomenon that the arc bending plate 1, the supporting vertical plate 3 and the bottom plate 4 cannot be kept in a fixed state due to stress during an operation is avoided. The circumferential positioning structure for preventing rotation is a terminal surface spline which is correspondingly arranged at the shaft end surfaces of the first shaft hole seat 6, the second shaft hole seat 2 and the third shaft hole seat 5, and the terminal surface spline is matched with the terminal surface spline of the opposite surface, so that the device can be fastened and locked through bolts and nuts after the angle adjustment, the relative rotation is prevented, and the device is kept in a stable state. Or, the circumference location structure sets up 8 radial recess 9 at least for 6 shaft end face equipartitions of first shaft hole seat, and this embodiment adopts 8, just can realize a circumference location every 45 degrees of adjustment like this, realizes fulcrum altitude mixture control through angle adjustment. Set up at least one convex key 8 on second shaft hole seat 2, the 5 axial end faces in third shaft hole seat respectively, this embodiment sets up two symmetric distribution's convex key 8, forms the circumference location through the unsmooth cooperation of convex key 8 and radial recess 9, has prevented effectively that this device is more reliable and more stable in the operation because of the rotation that atress circular arc bending plate 1, support riser 3 probably appear after first nut 7, the locking of second nut 13. The widths of the arc bending plate 1, the supporting vertical plate 3 and the bottom plate 4 are 8-12 cm, the axial lengths of the first shaft hole seat 6, the second shaft hole seat 2 and the third shaft hole seat 5 are half of the widths respectively, the strength of a connecting part can be ensured, and the structure is stressed uniformly and is more stable; the length of the bottom plate 4 is not less than 28 cm, the radius of the arc bending plate 1 is 2-3 cm, and the height of the supporting vertical plate 3 is 8-12 cm. This device can be according to every patient's limb size, with circular arc bending plate 1, it is fixed to the angle that suits to support riser 3 to adjust, just can keep whole device at a fixed height's steady state, the fulcrum of drag hook can be regarded as to circular arc bending plate 1, can also shelter from patient's tensor fasciae latae, can avoid direct tensor fasciae latae with patient when using bifurcate drag hook to prize thighbone, soft tissue complex such as skin is as the fulcrum, the easy muscle that appears when tensor fascia latae receives great power is torn, phenomenon such as excessive damage of soft tissue, can play effectual guard action to the patient especially the loose old patient of soft tissue structure, do benefit to the recovery and the functional training of patient postoperative.
When in use, the bottom plate 4 is firstly arranged below the limb of the joint replacement part of a patient, the whole device is stabilized by the weight of the limb, the first nut 7 and the second nut 13 are unscrewed, the arc bending plate 1, the supporting vertical plate 3 and the bottom plate are axially moved along the bolt, the convex keys 8 on the end surfaces of the second shaft hole seat 2 and the third shaft hole seat 5 are moved out of the groove 9 on the end surface of the first shaft hole seat 6, the angle between the arc bending plate 1 and the supporting vertical plate 3 and the angle between the supporting vertical plate 3 and the bottom plate 4 are adjusted according to the limb size of the patient, the arc bending plate 1 can be just positioned at the height of a supporting point to shield the tensor fascia latus of the patient, the convex keys 8 on the end surfaces of the second shaft hole seat 2 and the third shaft hole seat 5 are inserted into the groove 9 on the end surface of the first shaft hole seat 6, then the first nut 7 and the second nut 13 are screwed, the arc bending plate 1, the, then the bifurcate retractor 10 is placed between the femur and the tensor fascia lata of the patient at an inclined angle of 45-90 degrees, the cambered surface of the arc bending plate 1 is used as a fulcrum, and an operator can press down the tail end of the bifurcate retractor 10 by pressing the fulcrum with hands, so that the proximal end of the femur is fully exposed for operation.
Claims (7)
1. The utility model provides a drag hook strutting arrangement for joint operation which characterized in that: comprises a bottom plate (4), a supporting vertical plate (3) arranged on the bottom plate (4), and an arc bending plate (1) arranged at the upper end of the supporting vertical plate (3), wherein the upper end and the lower end of the supporting vertical plate (3) are respectively provided with a first shaft hole seat (6), the arc of the arc bending plate (1) is upwards jacked, the fixed end of the arc bending plate (1) is provided with a second shaft hole seat (2), a first bolt (11) penetrates through the second shaft hole seat (2) and the first shaft hole seat (6) at the upper end of the supporting vertical plate (3), and is locked by a first nut (7), so that the arc bending plate (1) can be circumferentially positioned and is fixedly connected with the supporting vertical plate (3), one side of the bottom plate (4) is provided with a third shaft hole seat (5), a second bolt (12) penetrates through the third shaft hole seat (5) and the first shaft hole seat (6) at the lower end of the supporting vertical plate (3), and is locked by a, the supporting vertical plate (3) can be circumferentially positioned and is fixedly connected with the bottom plate (4).
2. The retractor supporting apparatus for joint surgery according to claim 1, wherein: the widths of the arc bending plate (1), the supporting vertical plate (3) and the bottom plate (4) are the same, and the axial lengths of the first shaft hole seat (6), the second shaft hole seat (2) and the third shaft hole seat (5) are respectively half of the widths.
3. The retractor supporting apparatus for joint surgery according to claim 1, wherein: the width of the arc bending plate (1), the width of the supporting vertical plate (3) and the width of the bottom plate (4) are 8-12 cm, the length of the bottom plate (4) is not less than 28 cm, the radius of the arc bending plate (1) is 2-3 cm, and the height of the supporting vertical plate (3) is 8-12 cm.
4. The retractor supporting apparatus for joint surgery according to claim 1, wherein: and opposite shaft end faces among the first shaft hole seat (6), the second shaft hole seat (2) and the third shaft hole seat (5) are provided with circumferential positioning structures for preventing rotation.
5. The retractor supporting apparatus for joint surgery according to claim 4, wherein: the circumferential positioning structure for preventing rotation is a face spline which is correspondingly arranged at the shaft end faces of the first shaft hole seat (6), the second shaft hole seat (2) and the third shaft hole seat (5).
6. The retractor supporting apparatus for joint surgery according to claim 4, wherein: the circumferential positioning structure for preventing rotation is characterized in that a plurality of radial grooves (9) are uniformly distributed on the shaft end surface of the first shaft hole seat (6), and convex keys (8) are arranged on the shaft end surfaces of the second shaft hole seat (2) and the third shaft hole seat (5); or the circumferential positioning structure for preventing rotation is a plurality of radial grooves uniformly distributed on the shaft end faces of the second shaft hole seat (2) and the third shaft hole seat (5), and convex keys arranged on the shaft end faces of the first shaft hole seat (6).
7. The retractor supporting apparatus for joint surgery according to claim 6, wherein: the number of the radial grooves (9) is at least 8, and the number of the convex keys (8) is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229333.2U CN212037618U (en) | 2020-02-29 | 2020-02-29 | Drag hook supporting device for joint operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229333.2U CN212037618U (en) | 2020-02-29 | 2020-02-29 | Drag hook supporting device for joint operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212037618U true CN212037618U (en) | 2020-12-01 |
Family
ID=73534636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020229333.2U Active CN212037618U (en) | 2020-02-29 | 2020-02-29 | Drag hook supporting device for joint operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212037618U (en) |
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2020
- 2020-02-29 CN CN202020229333.2U patent/CN212037618U/en active Active
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