CN111759549A - Femoral prosthesis reduction device in artificial hip arthroplasty - Google Patents

Abstract

The invention discloses a femoral prosthesis resetting device in artificial hip joint replacement, which comprises a shell, wherein one end of the shell is provided with a movable pushing hand, two ends of the movable pushing hand are respectively provided with a clamp body, a clockwise button and an anticlockwise button are embedded in the peripheral side surface of the shell, one side of the movable pushing hand close to the shell is fixedly welded with a fixed base, the center of one side of the fixed base is fixedly inserted with a connecting rod, one end of the connecting rod far away from the fixed base is fixedly sleeved with a connecting base, the upper end of one side of the connecting base is fixedly provided with elongated sawteeth, the sawteeth at the lower ends of the elongated sawteeth are meshed with the sawteeth of a gear, the gear is connected with a motor through a rotating shaft, the resetting device can reset the femoral prosthesis without peeling soft tissues in the acetabulum of a patient, the surface of the patient and the prosthesis can not be damaged, and the subsequent recovery of the patient is facilitated.

Description

Femoral prosthesis reduction device in artificial hip arthroplasty

technical field

The invention relates to the technical field of medical devices, in particular to a femoral prosthesis reduction device in artificial hip joint replacement.

Background technique

Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials, and other similar or related items that are directly or indirectly used in the human body, including required computer software. The utility is mainly obtained through physical methods, not through Obtained by pharmacological, immunological or metabolic methods, or although these methods are involved but only play an auxiliary role, the purpose is the diagnosis, prevention, monitoring, treatment or alleviation of diseases; the diagnosis, monitoring, treatment, alleviation or functional compensation of damage; Inspection, replacement, adjustment or support of physiological structure or physiological process; life support or maintenance; pregnancy control; by examining samples from the human body to provide information for medical or diagnostic purposes, the state implements classified management of medical devices according to the degree of risk , the first category is a low-risk medical device, and routine management can ensure its safety and effectiveness; the second category is a medium-risk medical device that requires strict control and management to ensure its safety and effectiveness; the third category is a medical device with Higher risk requires special measures to be strictly controlled and managed to ensure safe and effective medical devices.

Artificial hip replacement is currently the best way to treat end-stage diseases of the hip joint such as avascular necrosis of the femoral head, rheumatoid arthritis, osteoarthritis and other diseases. It is often difficult for the operator to easily and effectively reduce the femoral prosthesis into the artificial acetabulum or into the dissected acetabulum. Bone hyperplasia or soft tissue contracture, poor ductility, scar hyperplasia and many other reasons make it difficult to reduce the femoral prosthesis in total hip arthroplasty, especially in patients with moderate and severe congenital dysplasia of the hip, how to reset the femoral prosthesis better? is a big problem.

In order to reset the femoral prosthesis during the operation, while causing a lot of physical consumption of the operator, it is necessary to perform more extensive soft tissue release, stripping, and cutting, which affects the postoperative rehabilitation process and increases the risk of complications. There is no instrument and device that can make the reduction of the femoral prosthesis more labor-saving, convenient and effective for the operator in the artificial hip arthroplasty with the help of the power source.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the existing problems in the prior art that in order to reset the femoral prosthesis, the operator is physically exhausted, and the soft tissue is released, stripped, and cut off on the patient, which affects the postoperative rehabilitation process and increases the risk of complications. The problem is to provide a femoral prosthesis reduction device in artificial hip arthroplasty. The femoral prosthesis reduction device in artificial hip arthroplasty can save the operator's physical strength and can complete the operation without extensive stripping of the soft tissue of the patient's hip joint.

In order to achieve the above purpose, the present invention provides the following technical solution: a femoral prosthesis repositioning device in artificial hip joint replacement, including a casing, one end of the casing is provided with a movable pusher, and both ends of the movable pusher are provided with clips. The outer ends of the clip body and the movable pusher are both wrapped with rubber, the end of the shell away from the movable pusher is provided with a charging port, and the end of the clip body close to the shell is fixedly welded with a bracket, and the bracket is far away from the movable pusher. One end of the clip body is fixedly connected with a handle, the inner side of the handle is provided with a non-slip handle, the peripheral side of the outer casing is embedded with a clockwise button and a counterclockwise button, and the side of the movable pusher close to the outer casing is fixedly welded with a fixed base, a connecting rod is fixedly inserted into the center of one side of the fixed base, a connecting base is fixedly sleeved at one end of the connecting rod away from the fixed base, and an upper end of one side of the connecting base is fixedly provided with long serrations, the A battery compartment is arranged inside one end of the casing close to the charging port, a battery is movably fixed inside the battery compartment, and the teeth at the lower ends of the long serrations mesh with the serrations of the gear, and the gear is connected to the motor through the rotating shaft.

Preferably, the shape of the front view of the combination of the clip body and the movable pusher is C-shaped, the material of the clip body is metal material, the top view of the clip body is an arc-edge triangle, and the angle of the end of the clip body away from the casing is Obtuse rounded corners.

Preferably, both sides of the clip body and the movable pusher are wrapped with rubber, and the shape of the rubber matches the shape of the clip body and the movable pusher.

Preferably, the brackets at both ends of the clip body are cross-connected by rivets, the brackets pass through the peripheral side surface of the casing, and a movable hole is provided through the position where the casing and the brackets penetrate through.

Preferably, the battery is a rechargeable battery, the battery is connected to the charging port by a wire, the battery is connected to the motor by a wire, and the clockwise button and the counterclockwise button are both connected to the motor by a wire.

Preferably, the fixed base, the connecting rod, the connecting base and the long sawtooth are all made of metal, the fixed base and the connecting rod are cuboid, the connecting rod is in a cylindrical shape, and the fixed base, the connecting rod and the connecting base The connection form is I-shaped.

Compared with the prior art, the present invention provides a femoral prosthesis reduction device in artificial hip replacement, which has the following beneficial effects:

1. The present invention drives the movement of the bracket by controlling the handle, and drives the expansion of the clip body through the lever principle of the rivet, thereby suppressing the soft tissue in the acetabulum, and the medical rubber wrapped on the clip body will not damage the soft tissue, and does not require The prosthesis can be reset by stripping the soft tissue, and the clip body will not cause scratches to the femoral prosthesis. The clip body presents an arc-triangular shape, and the corner away from the shell is an obtuse fillet, which facilitates the clip body to penetrate into the acetabulum better. ;

2. In the present invention, the power source inside the casing is fixedly connected by the movable pusher, and the rotating shaft of the output end of the control motor is driven by pressing the clockwise button and the counterclockwise button to drive the gear to rotate, thereby driving the movable pusher to push forward and backward, so that in the false In the process of body reduction, the electric motor is used to push the femoral prosthesis into the acetabulum, which saves the operator's physical strength and operation time;

The parts not involved in the device are the same as the existing technology or can be realized by using the existing technology. The present invention has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but not to limit the present invention. In the accompanying drawings:

Figure 1 is a schematic diagram of the frontal structure proposed by the femoral prosthesis reduction device in artificial hip arthroplasty;

Figure 2 is a schematic frontal cross-sectional structure diagram of a femoral prosthesis reduction device in artificial hip arthroplasty;

Figure 3 is a schematic top view of the proposed structure of the femoral prosthesis reduction device in artificial hip replacement;

Figure 4 Schematic diagram of the detailed structure of the power source proposed by the femoral prosthesis reduction device in artificial hip replacement;

In the picture: 1. Clip body; 2. Rubber; 3. Bracket; 4. Handle; 5. Anti-skid handle; 6. Clockwise button; 7. Counterclockwise button; 8. Housing; 9. Removable push handle; 10. Connection Rod; 11, connection base; 12, long sawtooth; 13, battery compartment; 14, battery; 15, charging port; 16, fixed base; 17, movable hole; 18, gear; 19, motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-4, the present invention provides a technical solution: a femoral prosthesis repositioning device in artificial hip replacement, including a casing 8, one end of the casing 8 is provided with a movable pusher 9, and both ends of the movable pusher 9 are A clip body 1 is provided, the outer ends of the clip body 1 and the movable pusher 9 are wrapped with rubber 2, the end of the shell 8 away from the movable pusher 9 is provided with a charging port 15, and the end of the clip body 1 close to the shell 8 is fixedly welded with The bracket 3, the end of the bracket 3 away from the clip body 1 is fixedly connected with a handle 4, the inner side of the handle 4 is provided with a non-slip handle 5, the peripheral side of the housing 8 is embedded with a clockwise button 6 and a counterclockwise button 7, and a movable push handle 9 A fixed base 16 is fixedly welded on the side close to the housing 8 , a connecting rod 10 is fixedly inserted in the center of one side of the fixed base 16 , and a connecting base 11 is fixedly sleeved on one end of the connecting rod 10 away from the fixed base 16 , and one side of the connecting base 11 is fixedly sleeved. A long sawtooth 12 is fixedly arranged on the upper end, a battery compartment 13 is arranged inside the end of the casing 8 close to the charging port 15, and a battery 14 is movably fixed inside the battery compartment 13. The rotating shaft is connected with the motor 19, the bracket 3 is driven by the control handle 4, and the expansion of the clip body 1 is driven by the lever principle of the rivet, so as to suppress the soft tissue in the acetabulum, and the medical rubber 2 wrapped on the clip body 1 will not interfere. If the soft tissue is damaged, the prosthesis can be reset without peeling the soft tissue, and the clip body will not cause scratches to the femoral prosthesis. The clip body 1 is in the shape of a curved triangle, and the corner away from the shell is an obtuse rounded corner, which is convenient for clipping. Better penetration of the body into the acetabulum.

In the present invention, preferably, the front view shape of the clip body 1 and the movable pusher 9 is C-shaped, the material of the clip body 1 is metal material, the top view shape of the clip body 1 is an arc-edge triangle, and the end of the clip body 1 away from the housing 8 The corners are obtuse and rounded, and the setting of the metal material of the clip body 1 makes the clip body 1 have more expansion force during the expansion process.

In the present invention, preferably, both sides of the clip body 1 and the movable pusher 9 are wrapped with rubber 2, the shape of the rubber 2 matches the shape of the clip body 1 and the movable pusher 9, and the rubber 2 is provided to avoid Hardness can cause damage to the femoral prosthesis or the acetabulum, affecting subsequent recovery.

In the present invention, it is preferably characterized in that the brackets 3 at both ends of the clip body 1 are cross-connected by rivets, the bracket 3 penetrates the peripheral side of the casing 8, and the position where the casing 8 and the bracket 3 are penetratingly connected is provided with a movable hole 17. The movable hole The arrangement of 17 facilitates the movement of the stent 3 in the process of driving the clip body 1 to expand.

In the present invention, preferably, the casing 8 is cylindrical, the material of the casing 8 is medical plastic, and the material of the rubber 2 is medical rubber. The cylindrical configuration of the casing 8 is convenient for holding the instrument during the operation, and the plastic material is relatively light, which is convenient for the operation process. Save energy.

In the present invention, it is preferably characterized in that the battery 14 is a rechargeable battery, the battery 14 and the charging port 15 are connected by a wire, the battery 14 and the motor 19 are connected by a wire, and the clockwise button 6 and the counterclockwise button 7 are connected to each other by a wire. The motor 19 is connected, and the rechargeable setting of the battery 14 enables the device to be recharged cyclically during use, which is beneficial to the recycling of the device.

In the present invention, preferably, the fixed base 16, the connecting rod 10, the connecting base 11, and the long sawtooth 12 are all made of metal, the fixed base 16, the connecting rod 10 are cuboid, the connecting rod 10 is cylindrical, the fixed base 16, the connecting rod The connection shape of the rod 10 and the connection base 11 is an I-shaped, and the connection parts are made of metal material, which makes the connection more firm, and is convenient for the power source to firmly push the movable pusher 9, and then push the femoral prosthesis into the acetabulum.

The working principle and use process of the present invention: when in use, first charge the battery 14 with electricity through the charging port 15 for use. When the femoral prosthesis is reset, put the clip body 1 into the patient's acetabulum, and pinch the handle inward. 4. The handle 4 drives the bracket 3 that is movably fixed by the rivet to move. The bracket 3 moves inward from the side close to the handle 4 and outward from the side away from the handle 4. The handle 4 drives the clamp body 1 to expand outward to suppress the soft tissue in the acetabulum. , expand the acetabular space, place the femoral prosthesis at the entrance of the acetabulum, and move the prosthesis to the lower end of the pusher 9 and place it in a suitable position, press the counterclockwise button 7 to drive the gear 18 to rotate counterclockwise, thereby driving the long sawtooth 12 Push in the direction of the clip body 1, so as to push the movable pusher 9 to make the pusher push the femoral prosthesis into the acetabulum accurately and quickly, take out the clip body 1 after completion, and reset the movable pusher 9 by pressing the clockwise button 6, The instruments are then sterilized for use in the next surgery.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A femoral prosthesis reduction device in artificial hip arthroplasty comprises a shell (8), and is characterized in that: the portable push handle is characterized in that a movable push handle (9) is arranged at one end of the shell (8), clamps (1) are arranged at two ends of the movable push handle (9), rubber (2) wraps the outer ends of the clamps (1) and the movable push handle (9), a charging port (15) is arranged at one end, away from the movable push handle (9), of the shell (8), a support (3) is fixedly welded at one end, close to the shell (8), of the clamp (1), a handle (4) is fixedly connected at one end, away from the clamp (1), of the support (3), an anti-skidding handle (5) is arranged on the inner side face of the handle (4), a clockwise button (6) and an anticlockwise button (7) are embedded in the peripheral side face of the shell (8), a fixing base (16) is fixedly welded at one side, close to the shell (8), a connecting rod (10) is fixedly inserted in the center of one side of the fixing base (16), the fixed cover of one end of fixing base (16) is kept away from in connecting rod (10) has connect base (11), the fixed microscler sawtooth (12) that is provided with in one side upper end of connecting base (11), shell (8) are close to the inside of charging mouthful (15) one end and are provided with battery compartment (13), battery compartment (13) inside activity is fixed with battery (14), microscler sawtooth (12) lower extreme sawtooth meshes with the sawtooth of gear (18), gear (18) are connected with motor (19) through the pivot.

2. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the shape of the combined front view of the clamp body (1) and the movable push handle (9) is C-shaped, the clamp body (1) is made of metal, the shape of the top view of the clamp body (1) is arc-edged triangle, and the corner of one end of the clamp body (1) far away from the shell (8) is an obtuse fillet.

3. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the two sides of the clamp body (1) and the movable push hand (9) are both wrapped with rubber (2), and the shape of the rubber (2) is matched with the shapes of the clamp body (1) and the movable push hand (9).

4. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the brackets (3) at the two ends of the clip body (1) are connected in a cross way through rivets, the brackets (3) penetrate through the peripheral side surface of the shell (8), and the position where the shell (8) is connected with the brackets (3) in a penetrating way is provided with a movable hole (17) in a penetrating way.

5. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the shell (8) is cylindrical, the material of the shell (8) is medical plastic, and the material of the rubber (2) is medical rubber.

6. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the battery (14) is a rechargeable battery, the battery (14) is connected with the charging port (15) through a lead, the battery (14) is connected with the motor (19) through a lead, and the clockwise button (6) and the anticlockwise button (7) are both connected with the motor (19) through leads.

7. The femoral prosthesis reduction device in artificial hip arthroplasty according to claim 1, wherein the fixing base (16), the connecting rod (10), the connecting base (11) and the long saw teeth (12) are made of metal, the fixing base (16) and the connecting rod (10) are cuboid, the connecting rod (10) is cylindrical, and the fixing base (16), the connecting rod (10) and the connecting base (11) are I-shaped.

Images