CN221060744U - Joint spreader for knee arthroscope - Google Patents

Abstract

The utility model discloses a joint spreader for a knee arthroscope, which comprises a fixed seat, a universal tube and a transverse plate, wherein the fixed seat is provided with a plurality of transverse holes; a threaded rod penetrates through the transverse plate, a torsion head is arranged at the lower end part of the threaded rod, and the top end of the threaded rod is in threaded connection with the fixed block; the threaded rod is provided with a sliding block nut in threaded connection, two sides of the sliding block nut are fixedly connected with long rods, and the long rods are connected with a first sliding block in a sliding manner; inclined rods are hinged to the two side walls of the fixed block respectively, and the lower ends of the inclined rods are connected with the second sliding block in a sliding manner; the bottom side of the transverse plate is provided with a blind groove, the bottom wall of the blind groove is fixedly connected with an elastic piece, and the other end of the elastic piece is provided with a floating clamping block; the threaded rod passes through the floating clamping block, and the floating clamping block is provided with a clamping groove matched with the twisting head of the threaded rod. The joint spreader solves the problem that the joint spreader in the prior art needs to be held by hand and held with great force in the use process, so that the stability of the spreader is poor in use.

Description

Joint spreader for knee arthroscope

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a joint spreader for a knee arthroscope.

Background

Arthroscope is a rod-like optical instrument with a diameter of about 5mm for observing the internal structure of a joint, and is an endoscope for diagnosing and treating joint diseases. The arthroscope is provided with a lens at the end of a tubule, the tubule is inserted into the joint, and the structure in the joint is displayed on a monitor. Thus, the structure inside the joint can be directly observed through the arthroscope. The advent of arthroscopes has greatly changed the way orthopedics diagnoses and treats various joint disorders.

Although arthroscopic procedures have proven to be superior to previous open procedures, in arthroscopic restorations where the posterior horn of the knee joint is damaged, the patient is supine on the table and the affected limb is placed perpendicular to the table in a bent knee, usually requiring a special distractor to distract the joint before the procedure. Chinese patent publication No. CN 214048938U discloses a knee arthroscope spreader, including left support pole and right support pole, left support pole and right support pole are connected through the pivot rotation, are provided with the arc inserted bar between left support pole and the right support pole, and the outside cover of arc inserted bar has the spring. In the using process of the joint spreader, a doctor needs to hold the two grab handles by hands and then exert force inwards to open the spreading rods at the tail ends of the left supporting rod and the right supporting rod, and finally the knee joint of the patient is spread under the action of the springs.

In the practical use process of the knee arthroscope spreader, a doctor needs to hold the spreader with hands and hold the spreader with great force, so that the front ends of the left supporting rod and the right supporting rod of the spreader are close to each other to be aligned with the two ends of the knee joint and contact the inner side of the joint. However, in the long-time operation process, the physical strength of a doctor is greatly consumed by the high-force holding, so that the stability of the spreader in use is poor, and the operation is affected.

In view of this, there is a need for a new joint spreader for knee arthroscopes that overcomes the drawbacks of the prior art joint spreaders that require a high amount of force to hold for use.

Disclosure of utility model

The utility model aims to provide a joint spreader for a knee arthroscope, and aims to solve the problem that the joint spreader in the prior art needs to be held by hand and held with great force in the use process, so that the stability of the spreader is poor in use.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The joint spreader for the knee arthroscope comprises a fixed seat, wherein a universal pipe is fixedly arranged at the top of the fixed seat, and one end of the universal pipe is fixedly connected with a transverse plate;

The transverse plate is internally penetrated with a threaded rod which is in threaded connection with the transverse plate, the lower end part of the threaded rod is provided with a torsion head, and the top end of the threaded rod is in threaded connection with a fixed block; the threaded rod is provided with a sliding block nut in threaded connection, two sides of the sliding block nut are fixedly connected with a long rod, and the long rod is connected with a first sliding block in a sliding manner;

The two side walls of the fixed block are respectively hinged with an inclined rod, the lower end of the inclined rod is connected with a second sliding block in a sliding manner, and the first sliding block is fixedly connected with the corresponding second sliding block;

a blind groove is formed in the bottom side of the transverse plate, an elastic piece is fixedly connected to the bottom wall of the blind groove, and a floating clamping block is mounted at the other end of the elastic piece; the threaded rod passes through the floating clamping block, and the floating clamping block is provided with a clamping groove matched with the torsion head of the threaded rod; when the elastic piece is in a loose state, the torsion head clamp is embedded into the clamping groove on the floating clamping block.

In one embodiment of the utility model: the fixing seat is integrally C-shaped and consists of an upper supporting plate, a lower supporting plate and a vertical plate connected between the upper supporting plate and the lower supporting plate.

In one embodiment of the utility model: the upper support plate, the lower support plate and the vertical plate are integrally formed.

In one embodiment of the utility model: a screw rod is arranged in the upper supporting plate in a penetrating way, and the screw rod is in threaded connection with the upper supporting plate; the lower end of the screw rod is in threaded connection with a fixing plate, and the rotation freedom degree of the fixing plate is limited by the vertical plate.

In one embodiment of the utility model: the long rod is inclined downwards, and the inclination angle between the long rod and the horizontal plane is 1-10 degrees; preferably 1 to 5.

In one embodiment of the utility model: the slider nut is matched with the threaded rod.

In one embodiment of the utility model: the side wall of the first sliding block is fixedly connected with the side wall of the second sliding block.

In one embodiment of the utility model: the shape of the torsion head is regular hexagon, and the floating clamping block is provided with a regular hexagon clamping groove matched with the torsion head.

In one embodiment of the utility model: the other end of the elastic piece is connected with a spherical guide piece, and the floating clamping block is arranged on the spherical guide piece; and the size of the spherical guide is adapted to the blind slot.

Through one or more of the above embodiments of the present utility model, at least the following technical effects can be achieved:

1. According to the joint spreader for the knee arthroscope, through the arrangement of the torsion head and the threaded rod, the torsion head and the threaded rod are rotated, and the sliding block nut moves upwards on the threaded rod, so that two groups of diagonal rods are spread, and finally, the knee arthroscope joint of a patient is spread.

2. The joint spreader for the knee arthroscope can clamp the torsion head through the arrangement of the floating clamping block, and fix the spreader after being spread, so that the problems that the spreader is poor in stability when in use, affects the work of the medical staff and is inconvenient to treat due to the fact that the medical staff holds the spreader for a long time to fix and the physical strength of the medical staff is consumed are solved.

Drawings

The technical solution and other advantageous effects of the present utility model will be made apparent by the following detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings.

FIG. 1 is a schematic view of an embodiment of an articulation distractor for a knee joint scope of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic view of the joint distractor of FIG. 1 from another perspective;

FIG. 4 is an enlarged schematic view at B in FIG. 3;

reference numerals illustrate:

1. a fixing seat; 11. an upper support plate; 12. a lower support plate; 13. a vertical plate;

2. A screw; 3. a fixing plate; 4. a universal pipe; 5. a cross plate;

6. a threaded rod; 61. twisting the head;

7. A slider nut; 8. a long rod; 9. a first slider; 10. a fixed block; 11. a diagonal rod; 12. a second slider; 13. a blind groove; 14. a spherical guide; 15. an elastic member; 16. and (5) clamping blocks.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the application, and not to limit the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "plurality" means two or more, unless specifically defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

As described in the background art, in the joint spreader for a knee arthroscope provided in the prior art, a doctor is required to hold the spreader by hand and with great force during actual use, so that the front ends of the left and right support rods of the spreader are close to each other to align with both ends of the knee joint and contact the inner sides of the joint. However, in the long-time operation process, the physical strength of a doctor is greatly consumed by the high-force holding, so that the stability of the spreader in use is poor, and the operation is affected.

Aiming at the problems existing in the use process of the joint spreader, the application provides the joint spreader with a brand new structure, which replaces a high-force holding handle in a rotating mode, thereby greatly saving the strength and improving the use stability.

Specifically, referring to fig. 1, an embodiment of the present application provides a joint spreader for a knee arthroscope, which includes a fixing base 1, wherein the fixing base 1 is integrally formed in a "C" shape, and includes an upper support plate 11, a lower support plate 12, and a vertical plate 13 connected between the upper support plate 11 and the lower support plate 12. Preferably, the upper support plate 11, the lower support plate 12 and the riser 13 are integrally formed. The upper supporting plate 11 is rotatably connected with a screw rod 2, the lower end of the screw rod 2 penetrates through the upper supporting plate 11, and the lower end of the screw rod 2 is provided with a fixing plate 3. The fixing plate 3 is screwed with the screw 2, and the rotation freedom of the fixing plate 3 is limited by the vertical plate 13, so that the fixing plate 3 can move up and down on the screw 2 when the screw 2 rotates. Preferably, the fixing plate 3 is a square plate, and its side surface has a certain gap with the surface of the vertical plate 13.

The upper supporting plate 11 is fixedly provided with a universal pipe 4, and the upper end of the universal pipe 4 is fixedly connected with a transverse plate 5.

Referring to fig. 1-3, a threaded rod 6 is inserted into the cross plate 5, and the threaded rod 6 extends through the cross plate 5. That is, the cross plate 5 has a threaded hole therethrough, and the threaded rod 6 is threaded into the threaded hole and is screwed to the cross plate 5 so as to be rotatable relative to the cross plate 5. Preferably, the end of the threaded rod 6 exposed from the lower side surface of the transverse plate 5 (i.e., the lower end) is fixedly connected with a torsion head 61, and the threaded rod 6 can be conveniently rotated by the torsion head 61.

Referring to fig. 1, a fixing block 10 is connected to the other end (i.e., the upper end) of the threaded rod 6, and the fixing block 10 is screwed with the threaded rod 6. The threaded rod 6 is also sleeved with a slider nut 7 which is in threaded connection with the threaded rod 6. The threaded rod 6 and the slider nut 7 form a screw rod slider mechanism, so that the slider nut 7 can be driven to move in the vertical direction on the threaded rod 6 when the threaded rod 6 is rotated.

Referring to fig. 2, both sides of the slider nut 7 are fixedly connected with a long rod 8, or the long rod 8 is inserted into the slider nut 7 and fixedly connected with the slider nut 7. The long rod 8 is provided with a first sliding block 8 respectively positioned at two sides of the sliding block nut 7, and the first sliding block 8 can slide along the long rod 8. In order to facilitate smooth sliding of the first slider 8 on the long rod 8, the long rod 8 is preferably a round rod having a smooth surface. In some embodiments, the long rods 8 on both sides of the slider nut 7 are arranged in a slightly downward inclined direction, and specifically, the downward inclination angle may be 1 ° to 10 °, preferably 2 ° to 5 °, for example, may be 1 °,2 °, 3 °, 4 °, 5 °, and the like.

The fixed block 10 is hinged with a diagonal rod 11 on the corresponding side of the slider nut 7, the diagonal rod 11 extends downwards, a second sliding block 12 is connected to the lower end of the diagonal rod in a penetrating way, and the second sliding block 12 can slide up and down along the diagonal rod 11. Also, in order to facilitate smooth sliding of the second slider 12 on the diagonal rod 11, the diagonal rod 11 is preferably a round rod having a smooth surface.

The side wall of the first sliding block 9 is fixedly connected with the side wall of the second sliding block 12, so that the movement of the first sliding block 9 on the long rod 8 drives the second sliding block 12 to simultaneously move on the inclined rod 11.

Referring to fig. 3-4, a blind groove 13 is formed in the bottom of the transverse plate 5, an elastic member 15 is fixedly connected to the bottom wall of the blind groove 13, and the other end of the elastic member 15 is fixedly connected to the spherical guide member 14. The ball guide 14 is sized to match the size of the blind slot 13, is movable within the blind slot 13, and serves to guide the extension and retraction of the elastic member 15.

A floating block 16 is fixedly mounted on the ball guide 14, and the threaded rod 6 passes through the floating block 16. The floating latch 16 has a latch groove (not shown) to be matched with the torsion head 61 of the threaded rod 6, and the torsion head 61 is latched into the latch groove of the floating latch 16 when the elastic member 15 is in a relaxed state (i.e., a state when no external force is applied). At this time, the rotation of the threaded rod 6 is restricted. Preferably, the shape of the torsion head 61 is regular hexagon, and the floating clamping block 16 is provided with a regular hexagon clamping groove matched with the torsion head 61, so that the floating clamping block 16 can better clamp the torsion head 61.

According to the knee joint mirror device, through the arrangement of the torsion head 61 and the threaded rod 6, the torsion head 61 and the threaded rod 6 are rotated, and the slider nut 7 moves upwards on the threaded rod 6, so that the two groups of diagonal rods 11 are spread, and finally the knee joint mirror joint of a patient is spread. Through the setting of the floating fixture block 16, the torsion head 61 can be clamped, so that the spreader is fixed after being spread, the problem that medical staff holds for a long time and fixes, and the physical strength of the medical staff can be consumed, so that the spreader is poor in stability when in use, the work of the medical staff is influenced, and meanwhile, the treatment is inconvenient is solved.

The joint spreader for knee arthroscope of the utility model has the working procedures that:

(1) When the knee arthroscope joint spreader is used, the fixing base 1 is clamped at a proper position, the fixing plate 3 is moved downwards by rotating the screw rod 2, so that fixation is performed, and the fixing block 10 is positioned below the popliteal fossa of a patient by adjusting the universal tube 4.

(2) Pressing the floating clamp block 16 to enable the spherical guide piece 14 to drive the elastic piece 15 to shrink, so that the floating clamp block 16 is far away from the torsion head 61; then, the front end of the fixing block 10 is inserted into the knee joint to be distracted, and the torsion head 61 is rotated to enable the threaded rod 6 to rotate, so that the slider nut 7 is driven to move upwards, and the movement of the slider nut 7 drives the long rod 8 and the first sliding block 9 to move upwards. And because stock 8 and first sliding block 9 sliding connection, therefore first sliding block 9 can slide outside on stock 8, and then drive second sliding block 12 and remove simultaneously, make diagonal bar 11 open to both sides, contact with knee joint to finally prop up patient's knee arthroscope joint.

(3) Loosening the floating fixture block 16, it returns to the normal position under the effect of elastic component 15 to block the turning head 61, thereby fix the turning head 61, solved medical personnel and need long-time handheld fix, lead to the spreader stability poor when using, influence medical personnel's work, inconvenient problem of treating simultaneously.

In summary, although the present utility model has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model is defined by the appended claims.

Claims (10)

1. A joint spreader for a knee arthroscope, characterized in that: the device comprises a fixed seat, wherein the top of the fixed seat is fixedly provided with a universal pipe, and one end of the universal pipe is fixedly connected with a transverse plate;

The transverse plate is internally penetrated with a threaded rod which is in threaded connection with the transverse plate, the lower end part of the threaded rod is provided with a torsion head, and the top end of the threaded rod is in threaded connection with a fixed block; the threaded rod is provided with a sliding block nut in threaded connection, two sides of the sliding block nut are fixedly connected with a long rod, and the long rod is connected with a first sliding block in a sliding manner;

The two side walls of the fixed block are respectively hinged with an inclined rod, the lower end of the inclined rod is connected with a second sliding block in a sliding manner, and the first sliding block is fixedly connected with the corresponding second sliding block;

a blind groove is formed in the bottom side of the transverse plate, an elastic piece is fixedly connected to the bottom wall of the blind groove, and a floating clamping block is mounted at the other end of the elastic piece; the threaded rod passes through the floating clamping block, and the floating clamping block is provided with a clamping groove matched with the torsion head of the threaded rod; when the elastic piece is in a loose state, the torsion head clamp is embedded into the clamping groove on the floating clamping block.

2. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the fixing seat is integrally C-shaped and consists of an upper supporting plate, a lower supporting plate and a vertical plate connected between the upper supporting plate and the lower supporting plate.

3. A joint distractor for a knee joint arthroscope according to claim 2, wherein: the upper support plate, the lower support plate and the vertical plate are integrally formed.

4. A joint distractor for a knee joint arthroscope according to claim 2, wherein: a screw rod is arranged in the upper supporting plate in a penetrating way, and the screw rod is in threaded connection with the upper supporting plate; the lower end of the screw rod is in threaded connection with a fixing plate, and the rotation freedom degree of the fixing plate is limited by the vertical plate.

5. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the long rod is inclined downwards, and the inclination angle between the long rod and the horizontal plane is 1-10 degrees.

6. A joint distractor for a knee joint arthroplasty according to claim 5 wherein: the inclination angle between the long rod and the horizontal plane is 1-5 degrees.

7. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the slider nut is matched with the threaded rod.

8. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the side wall of the first sliding block is fixedly connected with the side wall of the second sliding block.

9. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the shape of the torsion head is regular hexagon, and the floating clamping block is provided with a regular hexagon clamping groove matched with the torsion head.

10. A joint distractor for a knee joint arthroscope according to claim 1, wherein: the other end of the elastic piece is connected with a spherical guide piece, and the floating clamping block is arranged on the spherical guide piece; and the size of the spherical guide is adapted to the blind slot.