Surgical positioner for hip replacement and surgical bed

Abstract

The utility model discloses hip joint replacement operation body position frame and operating bed, this body position frame includes: fixed unit is used for installing in the edge of bearing platform, support unit is connected in fixed unit, and support unit is hinged with soft pad in one end towards bearing platform center line, one-way reset air spring is connected with support unit and soft pad respectively, and reset air spring has the reset resilience towards bearing platform center line, and one-way reset air spring is equipped with locking mechanism, and one-way reset air spring maintains in specified length through locking mechanism. In the process of carrying out hip joint replacement operation, one-way reset air spring locks its telescopic length through locking mechanism to restrict the activity of soft pad to fix the body position of patient, after completing operation, and patient needs repeatedly bending hip joint to test joint range of motion, and because one-way reset air spring has reset resilience after unlocking, therefore soft pad can rotate with the activity of patient's leg, and effectively avoids the risk of skin breakage of patient.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a hip replacement surgery positioning frame and operating table. Background Technology

[0002] Hip replacement, also known as artificial hip replacement, involves fixing an artificial prosthesis, including the femoral and acetabular parts, to normal bone using bone cement and screws to replace the diseased joint and restore the normal function of the patient's hip joint. It is a relatively mature and reliable treatment method.

[0003] During hip replacement surgery, the patient is fixed to the operating table in a lateral decubitus position using a positioning frame. Currently, a lateral decubitus frame is typically used to fix the anterior superior iliac spine. After surgery, the surgeon needs to test the range of motion and require the patient to repeatedly bend their hip. Because the positioning frame repeatedly applies pressure and impact to the area in contact with the patient, it can easily cause skin damage. Furthermore, the currently used lateral decubitus frame is made of a relatively rigid material that does not conform to human anatomy. Utility Model Content

[0004] The present invention aims to provide a surgical positioning frame for hip replacement surgery to help patients better navigate the joint testing phase.

[0005] According to a first aspect of the present invention, a hip replacement surgery positioning frame includes: A fixing unit, used for mounting on the edge of the bearing platform; A support unit connected to the fixing unit, wherein a soft pad is hinged to one end of the support unit facing the centerline of the support platform, the soft pad being used to contact the patient; A one-way return gas spring is connected to the support unit and the soft pad respectively. The return gas spring has a return force toward the center line of the support platform. The one-way return gas spring is provided with a locking mechanism, and the one-way return gas spring is maintained at a specified length by the locking mechanism.

[0006] The hip replacement surgery positioning frame according to the present invention has at least the following beneficial effects: The hip replacement surgery positioning frame is installed on the edge of the support platform through a fixing unit. The support platform is used to support the patient. During the hip replacement surgery, the one-way return gas spring locks its extension length through a locking mechanism to limit the movement of the soft pad, thereby fixing the patient's position. At this time, the patient's body is in contact with the soft pad, which provides protection and cushioning for the patient. After the hip replacement surgery is completed, the doctor unlocks the locking mechanism of the return gas spring so that the return gas spring has a return elastic force toward the center line of the support platform. Then the doctor tests the range of motion of the patient's joint. During the test, the patient needs to repeatedly bend the hip joint. Because the one-way return gas spring has a return elastic force, the soft pad can rotate with the movement of the patient's leg and maintain contact with the patient's leg, ensuring no impact and good stability, effectively avoiding the risk of skin damage to the patient, and improving the patient's medical experience.

[0007] According to some embodiments of the present invention, the soft pad has an arcuate surface adapted to the anterior superior iliac spine of the human body.

[0008] According to some embodiments of the present invention, the soft pad includes an inner layer and an outer layer, wherein the inner layer is an elastic buffer layer and the outer layer is a breathable and skin-friendly layer.

[0009] According to some embodiments of this utility model, the elastic buffer layer is a silicone component or a memory foam component, and the breathable and skin-friendly layer is a medical non-woven fabric.

[0010] According to some embodiments of the present invention, the fixing unit includes a clamping part and an adjusting rod. The clamping part is used to clamp and fix with the edge of the support platform. The adjusting rod is connected to the clamping part in a horizontal direction. The supporting unit is slidably connected to the adjusting rod in a vertical direction. The relative position of the supporting unit and the adjusting rod is limited by a first locking member.

[0011] According to some embodiments of the present invention, the clamping part includes a clamping body and a locking bolt. The clamping body is provided with an opening groove, and the locking bolt is threadedly connected to the clamping body. The movement path of the locking bolt overlaps with the opening groove.

[0012] According to some embodiments of the present invention, the support unit includes an outer sleeve rod and an inner sleeve rod, the inner sleeve rod being slidably connected to the outer sleeve rod, and the relative position of the inner sleeve rod and the outer sleeve rod being limited by a second locking member.

[0013] The operating table according to a second aspect embodiment of the present invention includes: The aforementioned surgical positioning frame for hip replacement surgery; The bed has a bed edge, and the hip replacement surgery positioning frame is installed on the bed edge through the fixing unit, with the soft pad facing the center line of the bed.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the hip replacement surgery positioning frame provided in this embodiment of the utility model.

[0016] In the attached diagram: 100-fixed unit, 200-support unit, 300-soft pad, 400-one-way return gas spring, 110-clamping part, 120-adjusting rod, 111-clamping body, 112-locking bolt, 113-opening slot, 121-first sleeve, 122-first locking element, 210-vertical rod, 220-outer sleeve rod, 230-inner sleeve rod, 231-second locking element, 221-second sleeve, 222-third locking element, 310-arc curved surface. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used to distinguish technical features, they are not to be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] like Figure 1 As shown, this embodiment of the present invention provides a hip replacement surgery positioning frame, which includes a fixing unit 100, a support unit 200, a soft pad 300, and a one-way return gas spring 400. The fixing unit 100 is used to be installed on the edge of the platform. For hip replacement surgery, the platform can be an operating table, so the fixing unit 100 is used to be installed on the edge of the operating table. The fixing unit 100 includes a clamping part 110 and an adjusting rod 120. The clamping part 110 includes a clamping body 111 and a locking bolt 112. The clamping body 111 has an opening groove 113, the size of which is larger than the size of the edge of the bed, so that the opening groove 113 can be nested on the edge of the bed. The clamping body 111 has a threaded hole for the locking bolt 112 to be threadedly connected. When the locking bolt 112 is threadedly connected to the clamping body 111, the movement path of the locking bolt 112 overlaps with the opening groove 113.

[0022] When it is necessary to lock the clamping part 110 to the bed edge, first nest the opening slot 113 of the clamping body 111 into the bed edge, and then tighten the locking bolt 112 into the threaded hole of the clamping body 111. During the tightening process, the locking bolt 112 gradually approaches the bed edge until it abuts against the bed edge. Continue tightening the locking bolt 112, which exerts a compressive force on the bed edge, thereby fixing the clamping body 111 to the bed edge. When it is necessary to remove the clamping part 110 from the bed edge, loosen the locking bolt 112 in the opposite direction to remove it from the bed edge, and then the clamping part 110 can be removed.

[0023] Of course, the clamping body 111 can also be fixedly connected to the bed edge through other structures, such as using a hose clamp structure to clamp the clamping body 111 to the bed edge, or using a pin to fix the clamping body 111 to the bed edge, and is not limited to the above embodiments.

[0024] Furthermore, the adjusting rod 120 is welded horizontally to the clamping part 110. The adjusting rod 120 is provided with a first sleeve 121 for vertical sliding connection with the vertical rod 210 of the support unit 200. A first locking member 122 is threaded onto the first sleeve 121, and the first locking member 122 can be a wing bolt. That is, the vertical rod 210 of the support unit 200 and the adjusting rod 120 of the fixing unit 100 are slidably connected in the vertical direction and fixed by the first locking member 122.

[0025] When it is necessary to adjust the height of the support unit 200 relative to the fixed unit 100, first loosen the first locking member 122 so that the vertical rod 210 can slide freely in the first sleeve 121. Then adjust the position of the vertical rod 210 to a suitable height. Then tighten the first locking member 122 so that the first locking member 122 exerts a squeezing force on the vertical rod 210, and finally achieve the adjustment of the position of the vertical rod 210.

[0026] For example, the support unit 200 includes a vertical rod 210, an outer rod 220, and an inner rod 230. The outer rod 220 has an inner hole that accommodates the inner rod 230. The inner rod 230 is horizontally slidably connected to the outer rod 220 through the inner hole. A second locking member 231, which may be a wing bolt, is threaded onto the outer rod 220. That is, the outer rod 220 and the inner rod 230 are slidably connected in the horizontal direction and fixed by the second locking member 231. The outer rod 220 also has a second sleeve 221 that allows the vertical rod 210 to slide vertically. A third locking member 222, which may also be a wing bolt, is threaded onto the second sleeve 221. That is, the outer rod 220 and the vertical rod 210 are slidably connected in the vertical direction and fixed by the third locking member 222.

[0027] It is understandable that both the outer rod 220 and the adjusting rod 120 are orthogonally connected to the vertical rod 210, and under normal circumstances, the outer rod 220 and the adjusting rod 120 are set parallel to each other.

[0028] When it is necessary to adjust the telescopic position of the inner sleeve rod 230 relative to the outer sleeve rod 220, first loosen the second locking member 231 so that the inner sleeve rod 230 can slide freely in the outer sleeve rod 220. Then adjust the position of the inner sleeve rod 230 to a suitable horizontal position. After that, tighten the second locking member 231 so that the second locking member 231 exerts a compressive force on the inner sleeve rod 230, and finally achieve the adjustment of the position of the inner sleeve rod 230.

[0029] When it is necessary to adjust the height of the outer sleeve 220 relative to the vertical rod 210, first loosen the third locking member 222 so that the second sleeve 221 of the outer sleeve 220 can slide freely along the vertical rod 210. Then adjust the position of the outer sleeve 220 to a suitable height. After that, tighten the third locking member 222 so that the third locking member 222 exerts a pressing force on the vertical rod 210, and finally achieve the adjustment of the position of the outer sleeve 220.

[0030] The reason for requiring multiple degrees of freedom for adjustment is that during hip replacement surgery, multiple positioning frames are needed to fix the patient's position on the operating table. Since each patient has different physical conditions, the positioning frame needs to be configured with multiple degrees of freedom to accommodate all possible situations. Of course, in other embodiments, adjustments can be achieved using methods other than threaded locking mechanisms, such as spring columns and multiple adjustment holes, and are not limited to the embodiments described above.

[0031] Exemplarily, a soft pad 300 is hinged to one end of the inner sleeve rod 230 facing the center line of the bed. The soft pad 300 is used to contact the patient. Because the soft pad 300 is hinged to the inner sleeve rod 230, it can rotate around the inner sleeve rod 230. In this embodiment, since the positioning frame is used to fix the patient's anterior superior iliac spine, the soft pad 300 has an arc-shaped surface 310 adapted to the anterior superior iliac spine of the human body. The arc-shaped surface 310 has a higher degree of conformity to the human anatomical structure, which can disperse local pressure, reduce the risk of damage to the skin and soft tissue of the anterior superior iliac spine, and improve the stability of fixation. When the patient repeatedly flexes the hip joint, his / her legs can drive the soft pad 300 to rotate around the hinge point.

[0032] However, the above structure also has the following defects: Since the soft pad 300 can rotate around the inner sleeve rod 230, it does not have the function of fixing the patient's position. Moreover, when the patient's leg drives the soft pad 300 to rotate around the hinge point, the position of the soft pad 300 cannot be restored during the return stroke of the patient's leg. It cannot move with the patient's leg, resulting in the patient's leg lacking support.

[0033] To address the aforementioned technical issues, a one-way return gas spring 400 is connected between the inner sleeve rod 230 and the soft pad 300. The one-way return gas spring 400 is an existing structure, and its structure can be found in Chapter 5, "Lockable Gas Springs," of the *Gas Spring Design and Application Handbook* (Mechanical Industry Press). The core of the one-way return gas spring 400 consists of five parts: a cylinder, a telescopic rod, a locking mechanism, a sealing assembly, and a damping device. The cylinder is fixedly connected to the inner sleeve rod 230 and contains high-pressure gas and hydraulic oil, providing the return power source for the telescopic rod. One end of the telescopic rod is hinged to the soft pad 300, and the other end extends into the cylinder. During compression, external force is required to overcome part of the air pressure; after the force is released, it extends under air pressure. The locking mechanism can be a mechanical locking valve (such as a ball lock or a conical lock). Pressing the button releases the locking valve, allowing the telescopic rod to extend and retract; releasing the button locks the piston rod under spring force, achieving position locking. The sealing assembly prevents gas leakage from the cylinder and ensures the stability of the spring force. The damping device has a built-in throttle valve or hydraulic oil chamber, making the extension and retraction of the telescopic rod smooth and shock-free. In other words, the return gas spring has a return force toward the centerline of the bed, and the one-way return gas spring 400 can lock its extension and retraction length through a locking mechanism.

[0034] Using the above structure, the hip replacement surgery positioning frame is installed on the operating table via the fixing unit 100. During the hip replacement surgery, the one-way return air spring 400 locks its extension length through a locking mechanism to restrict the movement of the soft pad 300, thereby fixing the patient's position. At this time, the patient's body is in contact with the soft pad 300, which provides protection and cushioning. After the hip replacement surgery is completed, the doctor unlocks the locking mechanism of the return air spring, allowing it to have a return force towards the center line of the bed. The doctor then tests the patient's joint range of motion. During the test, the patient needs to repeatedly bend the hip joint. Because the one-way return air spring 400 has a return force, the soft pad 300 can rotate with the movement of the patient's legs and maintain contact with the patient's legs, ensuring no impact and good stability. This effectively avoids the risk of skin damage and improves the patient's medical experience.

[0035] In some embodiments of this invention, the soft pad 300 includes an inner layer and an outer layer. The inner layer is an elastic cushioning layer, and the outer layer is a breathable and skin-friendly layer. This layered design balances cushioning protection and comfort. The elastic cushioning layer absorbs the impact of changes in patient position, further reducing skin pressure; the breathable and skin-friendly layer reduces the risk of stuffiness and allergies caused by prolonged contact, improving the patient's intraoperative experience. In this embodiment, the elastic cushioning layer can be made of silicone or memory foam, and the breathable and skin-friendly layer can be made of medical non-woven fabric.

[0036] This embodiment of the invention also provides an operating table, which includes a bed frame and the aforementioned hip replacement surgery positioning frame. The bed frame has a bed edge, and the hip replacement surgery positioning frame is installed on the bed edge via a fixing unit 100. At this time, the soft cushion 300 faces the center line of the bed frame to be close to the patient's position.

[0037] Since the operating table adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A surgical positioning frame for hip replacement surgery, characterized in that, include: A fixing unit (100) is used for mounting on the edge of the bearing platform; A support unit (200) connected to the fixing unit (100) has a soft pad (300) hinged at one end toward the centerline of the support platform, the soft pad (300) being used to contact the patient; A one-way return gas spring (400) is connected to the support unit (200) and the soft pad (300) respectively. The return gas spring has a return force toward the center line of the support platform. The one-way return gas spring (400) is provided with a locking mechanism. The one-way return gas spring (400) locks its extension length through the locking mechanism.

2. The surgical positioning frame for hip replacement surgery according to claim 1, characterized in that: The soft pad (300) has an arcuate surface (310) that conforms to the anterior superior iliac spine of the human body.

3. The surgical positioning frame for hip replacement surgery according to claim 1, characterized in that: The soft pad (300) includes an inner layer and an outer layer, wherein the inner layer is an elastic cushioning layer and the outer layer is a breathable and skin-friendly layer.

4. The surgical positioning frame for hip replacement surgery according to claim 3, characterized in that: The elastic buffer layer is a silicone component or a memory foam component, and the breathable and skin-friendly layer is a medical non-woven fabric.

5. The hip replacement surgery positioning frame according to claim 1, characterized in that: The fixing unit (100) includes a clamping part (110) and an adjusting rod (120). The clamping part (110) is used to clamp and fix with the edge of the support platform. The adjusting rod (120) is connected to the clamping part (110) in the horizontal direction. The supporting unit (200) is slidably connected to the adjusting rod (120) in the vertical direction. The relative position of the supporting unit (200) and the adjusting rod (120) is limited by a first locking member (122).

6. The hip replacement surgery positioning frame according to claim 5, characterized in that: The clamping part (110) includes a clamping body (111) and a locking bolt (112). The clamping body (111) is provided with an opening groove (113). The locking bolt (112) is threadedly connected to the clamping body (111). The moving path of the locking bolt (112) overlaps with the opening groove (113).

7. The surgical positioning frame for hip replacement surgery according to claim 1, characterized in that: The support unit (200) includes an outer sleeve rod (220) and an inner sleeve rod (230), the inner sleeve rod (230) being slidably connected to the outer sleeve rod (220), and the relative position of the inner sleeve rod (230) and the outer sleeve rod (220) being limited by a second locking member (231).

8. An operating table, characterized in that, include: The hip replacement surgery positioning frame as described in any one of claims 1 to 7; The bed has a bed edge, and the hip replacement surgery positioning frame is installed on the bed edge through the fixing unit (100), with the soft pad (300) facing the center line of the bed.

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