CN212037617U

CN212037617U - Draw hook device for joint replacement surgery

Info

Publication number: CN212037617U
Application number: CN202020224158.8U
Authority: CN
Inventors: 李�杰; 王文凯; 张瑗; 刘载阳; 张珺
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-12-01
Anticipated expiration: 2030-02-28

Abstract

The utility model relates to a joint replacement drag hook device for operation, drag hook body including flat shape, the one end of drag hook body is equipped with the gib head, the other end of drag hook body is equipped with the handle, the middle section of drag hook body is equipped with the articulated support, and the drag hook body articulates in a strutting arrangement upper end through the articulated support, strutting arrangement includes the support column, supports and adjusts the seat, the upper end of support column is equipped with the hinge joint, and this hinge joint passes through the articulated support of articulated shaft with the drag hook body and articulates, the lower extreme of support column inserts and supports and adjust the location in the guiding hole of seat, support and adjust seat fixed mounting on a bottom plate, form the lever structure of drag hook body with strutting arrangement as the fulcrum.

Description

Draw hook device for joint replacement surgery

Technical Field

The utility model relates to the field of medical equipment, in particular to a joint replacement is drag hook device for operation.

Background

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 direct anterior approach total hip replacement is performed by exposing the hip joint from the front through the tensor fascia lata gap and the rectus femoris gap, has the advantages of small soft tissue injury, quick postoperative recovery, short hospitalization time and the like, has obvious early curative effect, and multiple large sample research data show that the direct anterior approach total hip replacement can remarkably promote the postoperative recovery speed of a patient. With the advancement of China into the aging society, the total number of patients who undergo hip joint replacement increases year by year, and because the anterior total hip joint replacement has the advantages of small minimally invasive surgery wound, quick postoperative recovery, obvious treatment effect and the like, the total hip joint replacement will be more and more emphasized by people.

In the operation process of direct anterior approach hip joint replacement, the front end of the femur is fully exposed, and the currently adopted method is to place a trochanter bifurcate retractor between the proximal end of the femur and the posterior muscle, take the soft tissue complex of the tensor fascia lata on the skin and the like as a fulcrum, press down the tail end of the bifurcate retractor in a manual prying mode, and accordingly lift the proximal end of the femur by about 15 degrees. However, when the retractor is used for prying the femur, the stress of the tensor fascia lata is larger, the soft tissues of some old patients are looser, and the muscle of the patients is easily torn and the soft tissues are excessively injured when the bifurcate retractor is pressed down, so that the postoperative rehabilitation and functional exercise of the patients are not facilitated, and even the muscle of the patients is damaged.

Disclosure of Invention

The utility model aims at the defects of the prior art and provides a drag hook for hip joint replacement, which can fully expose the operation visual field and protect the soft tissues around the joint to the maximum extent.

The technical scheme of the utility model is that: the utility model provides a joint replacement drag hook device for operation, drag hook body including flat shape, the one end of drag hook body is equipped with the gib head, the other end of drag hook body is equipped with the handle, the middle section of drag hook body is equipped with articulated support, and the drag hook body articulates in a strutting arrangement upper end through articulated support, strutting arrangement includes the support column, supports and adjusts the seat, the upper end of support column is equipped with the articulated joint, and this articulated joint passes through the articulated support of articulated shaft with the drag hook body and articulates, the lower extreme of support column inserts and supports and fix a position in the guiding hole of adjusting the seat, support and adjust seat fixed mounting on a bottom plate, form the lever structure of drag hook body with strutting arrangement as the fulcrum.

The support is adjusted the guide hole wall of seat and is down equipped with a plurality of radial locating holes that run through from last in proper order, locating hole and guiding hole intercommunication, be equipped with at least one radial locking hole that runs through on the support column, the support column inserts and supports the guiding hole of adjusting the seat, inserts and passes the locking hole from one of them locating hole with a positioning bolt and adjusts the seat location with the support column and support and fix a position, makes the support column can go up and down to fix a position.

The lower end of the supporting adjusting seat is provided with a folded edge, and the folded edge is fixed with the bottom plate through welding or screws.

The articulated support of drag hook body is the symmetry form and sets up in drag hook body both sides and downwardly extending, and articulated support and drag hook body integrated into one piece correspond on two articulated supports and set up the shaft hole, the hinge joint of support column upper end is located between two articulated supports, and the articulated support through articulated shaft and drag hook body forms articulatedly.

The articulated support welding of drag hook body is at drag hook body lower extreme, the articulated joint of support column upper end sets up to two, and articulated support is located between two articulated joints, forms articulatedly through articulated shaft and articulated joint.

The hook head is composed of two pointed ends, and the two pointed ends are bent upwards.

The handle and the hook head are in smooth transition through an arc-shaped bending transition section, and the width of the arc-shaped bending transition section is larger than that of the handle.

The distance between the tail end of the handle and the hinge shaft is larger than the distance between the hook head and the hinge shaft.

The tail end of the handle is provided with a through hole.

Adopt above-mentioned technical scheme: one end of the drag hook body is provided with a hook head, the other end of the drag hook body is provided with a handle, the hook head can be used for prying the thighbone by pressing the handle downwards, and the effect of exposing the near end of the thighbone is achieved. The middle section of drag hook body is equipped with articulated support, and strutting arrangement's support column upper end is equipped with the hinge joint, and this hinge joint passes through the articulated support of articulated shaft with the drag hook body and articulates, and the lower extreme of support column inserts and supports and adjust the guiding hole of seat and fix a position, supports and adjusts seat fixed mounting on the bottom plate, when making the handle of pushing down the drag hook body, the drag hook body uses strutting arrangement as the fulcrum to form the lever structure of drag hook body with strutting arrangement as the fulcrum. In the joint replacement operation process, put into between tensor fascia lata and the thighbone earlier the gib head of this device, the rethread is pressed and is lived the bottom plate and make this device fix on the operating table, prevents that the drag hook device from shifting the position that influences the gib head and put into, then pushes down the handle of drag hook body and makes the gib head lift to pry up the thighbone and make the thighbone near-end fully expose in operation field of vision within range. Because the retractor body takes the supporting device as a fulcrum in the process of pressing the handle, the force for pressing the handle cannot act on soft tissues such as muscles, the soft tissues can be prevented from being damaged by the force for pressing the handle, and the soft tissues around the joint can be protected to the maximum extent while the proximal end of the femur is fully exposed.

The support is adjusted the guide hole wall of seat and is down equipped with a plurality of radial locating holes that run through from last in proper order, locating hole and guiding hole intercommunication, be equipped with at least one radial locking hole that runs through on the support column, the support column inserts and supports the guiding hole of adjusting the seat, inserts and passes the locking hole from one of them locating hole with a positioning bolt and adjusts the seat location with the support column and support and fix a position, makes the support column can go up and down to fix a position. Set up the locking hole on the support column to the direction pore wall that supports the regulation seat sets up the locating hole, makes the support column liftable fix a position in the guiding hole that supports the regulation seat, thereby can support the length of adjusting the seat through adjusting the support column location, highly adjusting this drag hook device, make drag hook device highly be fit for different patients, the accuracy of the gib head position of being convenient for and the operation of being convenient for.

The lower extreme of supporting the regulation seat is equipped with the hem of turning over, and the hem of turning over is fixed with the bottom plate through welding or screw, supports the regulation seat and fixes on the bottom plate through the hem of turning over that the lower extreme was equipped with, guarantees strutting arrangement's stability.

The gib head comprises two cusps, and two cusps are the upwards crook form, set up the gib head into two cusps, can better suppress the near soft tissue of thighbone to further fully expose the thighbone near-end.

Smooth transition is carried out between the handle and the hook head through an arc-shaped bending transition section, the width of the arc-shaped bending transition section is larger than that of the handle, and the stress area of the arc-shaped bending transition section is increased, so that the force of the arc-shaped bending transition section on soft tissues is dispersed, the soft tissues are prevented from being scratched by the arc-shaped bending transition section, and when the hook head prizes up the femur, the arc-shaped bending transition section can block the soft tissues such as muscles, and the influence of muscle resilience on the operation visual field is prevented.

The distance between the tail end of the handle and the hinged shaft is greater than the distance between the hook head and the hinged shaft, so that the drag hook body forms a labor-saving lever taking the supporting device as a fulcrum, therefore, a doctor can pry up a femur with smaller force when using the device, and the use is more convenient and labor-saving.

The tail end of the handle is provided with a through hole, and the draw hook device can be hung and placed through the through hole when not used, so that the draw hook device is convenient to store and is prevented from being polluted.

The invention is further described with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the hinge joint between the retractor body and the support post;

FIG. 3 is a schematic structural view of the drag hook body of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic structural view of a support pillar of the present invention;

fig. 6 is a schematic structural view of the middle support adjusting seat of the present invention.

In the attached drawing, 1 is a hook head, 1-1 is a pointed end, 2 is an arc-shaped bending transition section, 3 is a handle, 3-1 is a through hole, 4 is a hinged support, 4-1 is a shaft hole, 5 is a support column, 5-1 is a hinged joint, 5-2 is a locking hole, 6 is a support adjusting seat, 6-1 is a guide hole, 6-2 is a positioning hole, 6-3 is a turning edge, 7 is a hinged shaft, 8 is a bottom plate, 9 is a positioning bolt and 10 is a locking nut.

Detailed Description

Referring to fig. 1 to 6, a retractor device for joint replacement surgery comprises a flat retractor body, wherein a hook head 1 is arranged at one end of the retractor body, a handle 3 is arranged at the other end of the retractor body, and the hook head 1 can pry up a femur by pressing the handle 3. Smooth transition is realized between the handle 3 and the hook head 1 through the arc-shaped bent transition section 2, when the hook head 1 prizes up the thighbone, the arc-shaped bent transition section 2 blocks soft tissues such as muscles near the thighbone, prevents the muscles from rebounding to shield the operation visual field, thereby fully exposing the proximal end of the thighbone and enabling the operation to be smoothly carried out. The width of the arc-shaped bent transition section 2 is larger than that of the handle 3, and the acting force of the arc-shaped bent transition section 2 on soft tissues can be dispersed by increasing the stress area of the arc-shaped bent transition section 2, so that the soft tissues are prevented from being damaged due to too large pressure of the arc-shaped bent transition section 2 on the soft tissues. The hook head 1 is composed of two pointed ends 1-1, the two pointed ends 1-1 are in an upward bending shape, the hook head 1 is set to be the two pointed ends 1-1, soft tissues near the thighbone can be pressed down better, therefore, the near end of the thighbone is further and fully exposed, the shape of the two pointed ends 1-1 which are bent upwards is matched with the arc shape of the thighbone, the thighbone can be hooked well, and the hook head 1 is prevented from slipping off the thighbone in the process of prying up the thighbone. The top ends of the two cusps 1-1 are both arc-shaped, so that the thighbone or soft tissue is prevented from being scratched by the cusps 1-1. The middle section of the drag hook body is provided with a hinged support 4, and the drag hook body is hinged at the upper end of a supporting device through the hinged support 4. The supporting device comprises a supporting column 5 and a supporting adjusting seat 6, wherein the upper end of the supporting column 5 is provided with a hinged joint 5-1, and the hinged joint 5-1 is hinged with a hinged support 4 of the drag hook body through a hinged shaft 7. The hinged supports 4 of the drag hook body are symmetrically arranged on two sides of the drag hook body and extend downwards, the hinged supports 4 and the drag hook body are integrally formed, shaft holes 4-1 are correspondingly arranged on the two hinged supports 4, and the hinged joint 5-1 at the upper end of the support column 5 is positioned between the two hinged supports 4 and hinged with the hinged supports 4 of the drag hook body through hinged shafts 7. The hinged support 4 of the drag hook body can be welded at the lower end of the drag hook body, two hinged joints 5-1 are arranged at the upper end of the support column 5, and the hinged support 4 is positioned between the two hinged joints 5-1 and hinged with the hinged joints 5-1 through the hinged shaft 7. The lower end of the supporting column 5 is inserted into a guide hole 6-1 of the supporting adjusting seat 6 for positioning, the supporting adjusting seat 6 is fixedly installed on a bottom plate 8, a turning edge 6-3 is arranged at the lower end of the supporting adjusting seat 6, the turning edge 6-3 is fixed with the bottom plate 8 through welding or screws, and the supporting adjusting seat 6 is fixed on the bottom plate 8 through the turning edge 6-3 arranged at the lower end, so that the stability of the supporting device is ensured. When the handle 3 of the drag hook body is pressed downwards, the drag hook body can use the supporting device as a pivot, thereby forming a lever structure of the drag hook body which uses the supporting device as the pivot. When the handle 3 is pressed down, the retractor body uses the supporting device as a fulcrum, the force for pressing down the handle can not act on soft tissues such as muscles, the damage to the soft tissues caused by the force for pressing down the handle 3 can be avoided, and therefore the effect of protecting the soft tissues around the joint is achieved.

The wall of a guide hole 6-1 of the support adjusting seat 6 is sequentially provided with a plurality of positioning holes 6-2 which penetrate through in the radial direction from top to bottom, the positioning holes 6-2 are communicated with the guide holes 6-1, at least one locking hole 5-2 which penetrates through in the radial direction is arranged on the support pillar 5, the support pillar 5 is inserted into the guide hole 6-1 of the support adjusting seat 6, a positioning bolt 9 is inserted into one positioning hole 6-2 and penetrates through the locking hole 5-2 to fix the support pillar 5 and the support adjusting seat 6 in a positioning mode, and the positioning bolt 9 is locked through a locking nut 10 to enable the support pillar 5 to be capable of being lifted and positioned. The support column 5 is provided with the locking hole 5-2, the wall of the guide hole 6-1 of the support adjusting seat 6 is provided with the positioning hole 6-2, so that the support column 5 can be positioned in the guide hole 6-1 of the support adjusting seat 6 in a lifting way, when the retractor is used, the positioning bolt 9 is inserted into the positioning hole 6-2 and the locking hole 5-2 at different positions, the overlapping length of the support column 5 and the guide hole of the support adjusting seat 6 can be adjusted, the length of the support column 5 positioned in the support adjusting seat 6 can be adjusted according to actual needs in an operation, the height of the retractor device is adjusted, the height of the retractor device is adapted to limbs of different patients, the accuracy of the position of the hook head 1 is ensured, and the operation is convenient.

The distance of the tail end of the handle 3 and the articulated shaft 7 is greater than the distance of the hook head 1 and the articulated shaft 7, so that the drag hook body forms a labor-saving lever taking the supporting device as a fulcrum, therefore, a doctor can pry the femur by applying a small force to the handle 3 when using the device, and the use is more convenient and labor-saving. The tail end of the handle 3 is provided with a through hole 3-1, and the draw hook device can be hung and placed through the through hole 3-1 when not used, so that the draw hook device is convenient to store and is prevented from being polluted.

When the retractor device is used in the process of total hip replacement surgery, after the acetabular prosthesis is placed into the acetabular prosthesis and the proximal end of the femur is exposed, the device is firstly placed on one side of the thigh of a patient, then two tips 1-1 of a hook head 1 are placed between the femur and the tensor fasciae latae of the patient at an angle of 30-60 degrees, then the height of a supporting and adjusting seat 6 is adjusted to be adapted to the limb of the patient by adjusting the position of a positioning bolt 9 according to the height of the limb of the patient, a bottom plate 8 is placed under the thigh of the patient, the device is fixed on an operating table by pressing the bottom plate 8 by the weight of the patient, the position of the hook head 1 inserted into the femur is prevented from being influenced by the displacement of the retractor device, then a handle 3 of the retractor body is pressed downwards to enable the hook head 1 to tilt upwards, so that the femur is pried, and resistance is formed on soft tissues near the femur, prevent muscle resilience to in the operation field of fully exposing thighbone near-end, the doctor of being convenient for carries out the operation smoothly.

This drag hook device is owing to the in-process drag hook body at push handle 3 is with strutting arrangement as the fulcrum, consequently push handle 3's strength can not be acted on soft tissue such as muscle, then can prevent to push handle 3's strength from leading to the fact the damage to the soft tissue, and only the arc bending changeover portion 2 of drag hook body can form the resistance to soft tissue such as near thighbone's muscle, when fully exposing the thighbone near-end, furthest protects the soft tissue around the joint, the damage in with patient's art falls to minimumly, can effectively accelerate the recovery and the function exercise of patient's postoperative. Moreover, the drag hook body forms a labor-saving lever taking the supporting device as a fulcrum, so that labor is saved in the joint replacement surgery, and the surgery time is shortened.

Claims

1. The utility model provides a joint replacement drag hook device for operation, includes the drag hook body of flat shape, the one end of drag hook body is equipped with gib head (1), the other end of drag hook body is equipped with handle (3), its characterized in that: the middle section of drag hook body is equipped with articulated support (4), and the drag hook body articulates in a strutting arrangement upper end through articulated support (4), strutting arrangement includes support column (5), supports and adjusts seat (6), the upper end of support column (5) is equipped with articulated joint (5-1), and this articulated joint (5-1) is articulated through articulated shaft (7) and articulated support (4) of drag hook body, the lower extreme of support column (5) inserts and supports location in guiding hole (6-1) of adjusting seat (6), support and adjust seat (6) fixed mounting on a bottom plate (8), form the lever structure of drag hook body with strutting arrangement as the fulcrum.

2. The retractor device for joint replacement surgery according to claim 1, wherein: the supporting and adjusting device is characterized in that a plurality of positioning holes (6-2) which penetrate through in the radial direction are sequentially formed in the wall of each guide hole (6-1) of the supporting and adjusting seat (6) from top to bottom, the positioning holes (6-2) are communicated with the guide holes (6-1), at least one locking hole (5-2) which penetrates through in the radial direction is formed in the supporting column (5), the supporting column (5) is inserted into the guide holes (6-1) of the supporting and adjusting seat (6), a positioning bolt (9) is inserted into the corresponding positioning hole (6-2) from one of the positioning holes (6-2) and penetrates through the corresponding locking hole (5-2) to fix the supporting column (5) and the supporting and adjusting seat (6) in a positioning mode, and.

3. The retractor device for joint replacement surgery according to claim 1, wherein: the lower end of the supporting and adjusting seat (6) is provided with a turned edge (6-3), and the turned edge (6-3) is fixed with the bottom plate (8) through welding or screws.

4. The retractor device for joint replacement surgery according to claim 1, wherein: articulated support (4) of drag hook body are symmetry form setting in drag hook body both sides and downwardly extending, and articulated support (4) and drag hook body integrated into one piece correspond on two articulated support (4) and set up shaft hole (4-1), articulated joint (5-1) of support column (5) upper end are located between two articulated support (4), and articulated support through articulated shaft (7) and drag hook body forms articulatedly.

5. The retractor device for joint replacement surgery according to claim 1, wherein: the drag hook is characterized in that the hinged support (4) of the drag hook body is welded at the lower end of the drag hook body, two hinged joints (5-1) are arranged at the upper end of the supporting column (5), the hinged support (4) is positioned between the two hinged joints (5-1), and the hinged support is hinged with the hinged joints (5-1) through the hinged shaft (7).

6. The retractor device for joint replacement surgery according to claim 1, wherein: the hook head (1) is composed of two pointed ends (1-1), and the two pointed ends (1-1) are bent upwards.

7. The retractor device for joint replacement surgery according to claim 1, wherein: the handle (3) and the hook head (1) are in smooth transition through an arc-shaped bending transition section (2), and the width of the arc-shaped bending transition section (2) is larger than that of the handle (3).

8. The retractor device for joint replacement surgery according to claim 1, wherein: the distance between the tail end of the handle (3) and the hinge shaft (7) is greater than the distance between the hook head (1) and the hinge shaft (7).

9. The retractor device for joint replacement surgery according to claim 1, wherein: the tail end of the handle (3) is provided with a through hole (3-1).