CN218305027U - Medical orthopedics hammer - Google Patents

Abstract

The utility model provides a medical orthopedic hammer, belonging to the technical field of medical instruments, which is provided with a hammer body and a limiting sleeve, wherein the hammer body is connected with the limiting sleeve in a sliding way; the bottom wall of the hammer body is connected with a detachable hammer head through a fixed connecting mechanism, a first hammer handle is arranged on the side wall of the hammer body, a first connecting hole is formed in the middle of the first hammer handle, a second hammer handle is arranged on the side wall of the limiting sleeve, and a fixing hole is formed in the top of the connecting position of the second hammer handle and the limiting sleeve; a second connecting hole is formed in the middle of the second hammer handle, a yielding groove is formed in the top of the position where the second connecting hole is located, the first hammer handle is embedded in the yielding groove, and the first hammer handle is rotationally connected with the second hammer handle through a rotating shaft; the orthopedic hammer has the advantages of being capable of achieving the positioning function, effectively improving operation quality, having the advantages of being high in flexibility and stability and wide in application range, and being convenient and labor-saving to use.

Description

A medical orthopedic hammer

technical field

The utility model belongs to the technical field of medical instruments, in particular to a medical orthopedic hammer.

Background technique

In the process of hip and knee replacement surgery, accurate removal of necrotic bone is one of the key factors for the success of the operation, which facilitates subsequent selection and installation of a suitable type of prosthesis; For a better fit, careful modification is often required; and in the process of trial mold reduction and prosthesis installation, it is necessary to hit the trial mold or prosthesis vigorously to fix the trial mold or prosthesis on the osteotomy surface ; In the process of osteotomy, bone modification and prosthesis installation, orthopedic hammer is an essential surgical tool.

Orthopedic hammers are often used to strike chisels, bone nails, bone needles, and implant prostheses or trial models during orthopedic surgery. There are many types of orthopedic surgical instruments and their use is complicated. The form with a hammer handle and a hammer head has a single function, and it is laborious to use, and it does not have a positioning function. During use, there may be a risk of misalignment, resulting in incorrect installation positions of bone nails or prostheses, which in turn affects Postoperative recovery of patients.

Utility model content

In view of this, the utility model provides a medical orthopedic hammer, which has the characteristics of strong flexibility and stability, accurate positioning, convenient use, wide application range, can effectively improve the quality of surgery, and is beneficial to postoperative recovery of patients.

The utility model is achieved in that:

The utility model provides a medical orthopedic hammer, which has a hammer body and a limiting sleeve, and the hammer body is slidably connected with the limiting sleeve; the bottom wall of the hammer body is connected with a detachable hammer through a fixed connection mechanism. head, the side wall of the hammer body is provided with a first hammer handle, the middle part of the first hammer handle is provided with a first connection hole, the side wall of the limiting sleeve is provided with a second hammer handle, and the second The hammer handle is L-shaped, and the top of the connection between the second hammer handle and the limit sleeve is provided with a fixing hole; the middle part of the second hammer handle is provided with a second connection hole, and the position of the second connection hole is There is a relief groove on the top of the top, the first hammer handle is embedded in the interior of the relief groove, the first connecting hole and the second connecting hole are provided with a rotating shaft, and the first hammer handle is connected to the second connecting hole. The second hammer handle is rotatably connected through the rotating shaft.

The technical effect of a medical orthopedic hammer provided by the utility model is as follows: by setting a limit sleeve to cooperate with the hammer body, it has various functions. Due to the deviation of the hammer body position, the installation position of the fixation or the prosthesis is not correct, which improves the accuracy of the installation position of the bone nail or prosthesis during the operation; by setting the detachable hammer head, it can be flexibly replaced according to the use requirements, and the flexibility is relatively high. Strong; by setting the first hammer handle and the second hammer handle through the rotary connection of the rotating shaft, using the principle of leverage, the pressure on the hammer body can easily reach the expected level, which is more convenient and labor-saving during use; by setting the L-shaped second hammer handle , can increase the holding force and stability of the limiter, and at the same time increase the up and down motion of the first hammer handle, and improve the hammering force of the hammer body.

On the basis of the above technical solution, a kind of medical orthopedic hammer of the present invention can also be improved as follows:

Wherein, the fixed connection mechanism is a threaded connection mechanism, and the threaded connection mechanism includes a threaded post provided at the top of the hammer head and a threaded hole provided at the bottom of the hammer body.

The beneficial effect of adopting the above improvement scheme is that the hammer head and the hammer body are connected together by setting a threaded connection mechanism, which has the characteristics of simple structure, convenient installation and easy replacement.

Wherein, the end of the first hammer handle away from the hammer body and the end of the second hammer handle away from the limit sleeve are both provided with handles.

The beneficial effect of adopting the above-mentioned improvement scheme is: through the above-mentioned arrangement, slipping during use can be avoided, and the accuracy and stability of the orthopedic hammer during use can be improved.

Wherein, the hammer body is fixedly connected to the first hammer handle by welding.

The beneficial effect of adopting the above improvement scheme is: the hammer body and the first hammer handle are connected by welding, the fixing effect is good, and it is not easy to break when subjected to a large torque, which can effectively prolong the service life of the orthopedic hammer.

Wherein, the limiting sleeve is fixedly connected to the second hammer handle by welding.

The beneficial effects of adopting the above improvement scheme are: the fixing effect is good by connecting the limit sleeve and the second hammer handle by welding, and it is not easy to break when subjected to a large external force, which can effectively prolong the service life of the orthopedic hammer.

Wherein, the bottom surface of the hammer head is a plane.

The beneficial effect of adopting the above-mentioned improvement scheme is that by setting the hammerhead with a flat bottom surface, it is convenient to strike instruments such as bone nails or bone needles.

Wherein, the bottom surface of the hammer head is a protruding arc surface, and the outer side of the hammer head is covered with a buffer sleeve.

The beneficial effect of adopting the above-mentioned improvement scheme is that, by setting the hammer head with a convex arc surface, it can be used to install the prosthetic part of the acetabulum.

Further, the buffer sleeve is made of plastic material.

The beneficial effect of adopting the above-mentioned improvement scheme is: the cushioning sleeve made of plastic is provided with low hardness, which can protect the prosthetic part to be installed during use, and avoid smashing or scratching the prosthetic part.

Wherein, the bottom surface of the hammer head is a concave arc surface, and a buffer pad is nested on the bottom surface of the hammer head.

The beneficial effect of adopting the above-mentioned improvement scheme is that by setting the hammer head with a concave arc surface, it can be used to install the prosthetic part of the femoral head.

Further, the buffer pad is made of plastic material.

The beneficial effect of adopting the above-mentioned improvement scheme is: the cushioning pad made of plastic material has low hardness, which can protect the prosthesis component to be installed during use, and avoid smashing or scratching the prosthesis component.

Compared with the prior art, the beneficial effect of the medical orthopedic hammer provided by the utility model is: by setting the limit sleeve to cooperate with the hammer body, it has multiple functions, and can perform the percussion operation of the ordinary orthopedic hammer, and can also Limit the position of the hammer body to avoid fixation or improper installation of the prosthesis due to the offset of the hammer body, and improve the accuracy of the installation position of the bone nail or prosthesis during the operation; by setting a detachable hammer head, it can be combined with It can be replaced according to the needs of use, and the flexibility is strong; by setting the first hammer handle and the second hammer handle to be connected through the rotating shaft, and using the principle of leverage, the pressure on the hammer body can easily reach the expected level, and it is more labor-saving during use; by setting Hammer heads with various specifications and matching buffer sleeves and cushions make the orthopedic hammer have multiple functions, improve applicability, and protect prosthetic components, which can effectively simplify the types and quantities of orthopedic surgical tools. It is more convenient to use.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the utility model. Obviously, the accompanying drawings in the following description are only the illustrations of the utility model. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is a schematic diagram of a medical orthopedic hammer;

Fig. 2 is a schematic diagram of the separation of the hammer body and the limit sleeve of a medical orthopedic hammer;

Fig. 3 is a schematic diagram of a hammer body of a medical orthopedic hammer;

Fig. 4 is a schematic diagram of a limit sleeve of a medical orthopedic hammer;

Fig. 5 is a schematic diagram of a second embodiment of a medical orthopedic hammer;

Fig. 6 is a schematic diagram of a third embodiment of a medical orthopedic hammer;

In the accompanying drawings, the list of parts represented by each label is as follows:

10. Hammer body; 11. First hammer handle; 12. First connecting hole; 20. Limit sleeve; 21. Second hammer handle; 211. Fixing hole; 22. Second connecting hole; 23. Giving way slot; 30, hammer head; 31, buffer sleeve; 32, buffer pad; 40, rotating shaft; 50, handle.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments described above are some of the embodiments of the present utility model, but not all of them. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

As shown in Figures 1-4, it is the first embodiment of a medical orthopedic hammer provided by the present invention. In this embodiment, there is a hammer body 10 and a stopper 20, and the hammer body 10 and the stopper 20 slide Connection; the bottom wall of the hammer body 10 is connected with a detachable hammer head 30 through a fixed connection mechanism, the side wall of the hammer body 10 is provided with a first hammer handle 11, and the middle part of the first hammer handle 11 is provided with a first connecting hole 12, The side wall of the limit sleeve 20 is provided with a second hammer handle 21, the second hammer handle 21 is L-shaped, and the top of the connection between the second hammer handle 21 and the limit sleeve 20 is provided with a fixing hole 211; There is a second connection hole 22 in the middle, and a relief groove 23 is formed on the top of the second connection hole 22. The first hammer handle 11 is embedded in the relief groove 23, and the first connection hole 12 and the second connection hole 22 are A rotating shaft 40 is provided, and the first hammer handle 11 and the second hammer handle 21 are connected in rotation through the rotating shaft 40 .

When in use, the medical personnel first hold the first hammer handle 11 and the second hammer handle 21 and pull them in opposite directions, so that the gap between the hammer body 10 and the limit sleeve 20 reaches the maximum, and then use the fixing nails to pass through the fixing holes. 211 Fix the limit sleeve 20 on the part to be struck, place the bone nail, bone needle or prosthesis and other parts to be installed on the preset position inside the limit sleeve 20, and the medical staff hold the second hammer with one hand The handle 50 at the end of the handle 21, the other hand holds the handle 50 at the end of the first hammer handle 11 and lifts it up quickly. At this time, under the rotation of the rotating shaft 40, the hammer body fixed at the other end of the first hammer handle 11 10 moves downward, the hammer body 10 first enters the inside of the limit sleeve 20, and under the guidance of the limit sleeve 20, it runs downward along the preset trajectory, knocking on the bone nail, bone needle or prosthesis and other components until the bone nail Or the bone needle is successfully installed according to the preset position.

Wherein, in the above technical solution, the fixed connection mechanism is a threaded connection mechanism, and the threaded connection mechanism includes a threaded column provided on the top of the hammer head 30 and a threaded hole provided at the bottom of the hammer body 10 .

During use, the medical personnel screw the threaded column at the top of the hammer 30 into the threaded hole at the bottom of the hammer 10 and tighten it. At this time, the assembly of the hammer 10 and the hammer 30 is completed.

Wherein, in the above technical solution, the end of the first hammer handle 11 away from the hammer body 10 and the end of the second hammer handle 21 away from the limit sleeve 20 are both provided with handles 50 .

During use, the hands of the medical personnel hold the handle 50 tightly, and under the action of the anti-skid groove on the handle 50, the frictional force is increased, making it difficult to slip.

Wherein, in the above technical solution, the hammer body 10 is fixedly connected to the first hammer handle 11 by welding.

Wherein, in the above technical solution, the limiting sleeve 20 and the second hammer handle 21 are fixedly connected by welding.

Wherein, in the above technical solution, the bottom surface of the hammer head 30 is a plane.

During use, when the hammer head 30 is descending, the bottom of the hammer head 30 is in direct contact with the bone needle or bone nail. When knocking, the contact area between the plane of the hammer head 30 bottom and the top surface of the bone needle or bone nail reaches maximum, and the pressure on the top of the nail is also maximum when knocked.

As shown in Figure 5, it is the second embodiment of a medical orthopedic hammer provided by the utility model. In this embodiment, the bottom surface of the hammer head 30 is a convex arc surface, and the outer side of the hammer head 30 is provided with a buffer Set of 31.

When in use, the medical personnel first set the buffer sleeve 31 on the outside of the hammer head 30, and place the limit sleeve 20 on the part of the hip where the prosthesis is to be installed, and then use the fixing nails to pass through the fixing holes 211 to fix the limit sleeve 20 On the part to be knocked, and align the opening position of the stopper 20 with the installation position of the prosthesis, the medical personnel hold the handle 50 at the end of the second hammer handle 21 with one hand, and hold the first hammer handle with the other hand The handle 50 at the end of 11 is lifted up quickly. At this time, the hammer body 10 descends, driving the hammer head 30 to smash down together. The curved surfaces of the acetabular prosthesis are in contact with each other, and the contact area reaches the maximum. With the continuous knocking of the hammer body 10, the acetabular prosthesis can be successfully installed according to the preset position.

As shown in FIG. 5 , it is a second embodiment of a medical orthopedic hammer provided by the present invention. In this embodiment, the buffer sleeve 31 is made of plastic material.

As shown in Figure 6, it is the third embodiment of a medical orthopedic hammer provided by the utility model. In this embodiment, the bottom surface of the hammer head 30 is a concave arc surface, and the bottom surface of the hammer head 30 is nested with Cushion 32.

During use, the medical personnel first set the buffer pad 32 on the bottom of the hammer head 30, and place the limit sleeve 20 on the position where the prosthesis is to be installed, and then use the fixing nails to pass through the fixing holes 211 to fix the limit sleeve 20 on the On the part to be knocked, and align the opening position of the stopper 20 with the installation position of the prosthesis, the medical personnel hold the handle 50 at the end of the second hammer handle 21 with one hand, and hold the first hammer handle 11 with the other hand. The handle 50 at the end is lifted up quickly. At this time, the hammer body 10 descends, driving the hammer head 30 to smash down together. At this time, the concave arc surface at the bottom of the hammer head 30 and the convex arc surface on the femoral head prosthesis The femoral head prosthesis can be successfully installed according to the preset position as the hammer body 10 continuously strikes, and the contact area reaches the maximum.

As shown in FIG. 6 , it is a third embodiment of a medical orthopedic hammer provided by the present invention. In this embodiment, the buffer pad 32 is made of plastic material.

Concretely, the operation steps of the utility model are as follows: the medical staff first pulls the first hammer handle 11 and the second hammer handle 21 in the opposite direction, stretches the gap between the hammer body 10 and the spacer sleeve 20, and pulls the spacer Cover 20 is placed on the position to be knocked, and then use fixing nails to pass through fixing holes 211 to fix the limit sleeve 20 on the position to be knocked. Under the action of the limit sleeve 20, it will travel to the inside of the limit sleeve 20 and knock the position of the bottom of the limit sleeve 20, and place the bone nail, bone needle or prosthesis to be installed at the preset position inside the limit sleeve 20 , hold the handle 50 at the end of the first hammer handle 11 with your hand and lift it up forcefully. Under the guidance of the limit sleeve 20, the hammer body 10 always strikes the preset position. At this time, the bone nail and bone needle Or prosthetics and other components can be accurately installed.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. The medical orthopedic hammer is characterized by comprising a hammer body (10) and a limiting sleeve (20), wherein the hammer body (10) is connected with the limiting sleeve (20) in a sliding manner; the bottom wall of the hammer body (10) is connected with a detachable hammer head (30) through a fixed connecting mechanism, a first hammer handle (11) is arranged on the side wall of the hammer body (10), a first connecting hole (12) is formed in the middle of the first hammer handle (11), a second hammer handle (21) is arranged on the side wall of the limiting sleeve (20), the second hammer handle (21) is L-shaped, and a fixing hole (211) is formed in the top of the connecting position of the second hammer handle (21) and the limiting sleeve (20); second connecting hole (22) have been seted up at the middle part of second hammer handle (21), abdication groove (23) have been seted up at the top of second connecting hole (22) position, first hammer handle (11) inlay in abdication groove (23) are inside, first connecting hole (12) with second connecting hole (22) are inside to be provided with rotation axis (40), first hammer handle (11) with second hammer handle (21) pass through rotation axis (40) swivelling joint.

2. The medical orthopedic hammer according to claim 1, characterized in that the fixing and connecting mechanism is a threaded connecting mechanism, and the threaded connecting mechanism comprises a threaded column arranged at the top of the hammer head (30) and a threaded hole formed at the bottom of the hammer body (10).

3. The medical orthopedic hammer according to claim 1, characterized in that a handle (50) is arranged at one end of the first hammer handle (11) far away from the hammer body (10) and at one end of the second hammer handle (21) far away from the position-limiting sleeve (20).

4. The medical orthopedic hammer according to claim 1, characterized in that the hammer body (10) is fixedly connected with the first hammer handle (11) by means of welding.

5. The medical orthopedic hammer according to claim 1, characterized in that the stop collar (20) and the second hammer handle (21) are fixedly connected by means of welded connection.

6. The medical orthopaedic hammer according to claim 1, wherein the bottom surface of the hammer head (30) is planar.

7. The medical orthopedic hammer according to claim 1, characterized in that the bottom surface of the hammer head (30) is a convex arc surface, and a buffer sleeve (31) is sleeved on the outer side of the hammer head (30).

8. The medical orthopaedic hammer according to claim 7, wherein the cushion collar (31) is made of plastic material.

9. The medical orthopedic hammer according to claim 1, characterized in that the bottom surface of the hammer head (30) is a concave arc surface, and a cushion pad (32) is nested on the bottom surface of the hammer head (30).

10. The medical orthopaedic hammer according to claim 9, wherein the cushion (32) is made of plastic material.

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