KR102497188B1 - Clamp device for reduction of bone fracture - Google Patents

Abstract

The present invention relates to a fixing clamp device for reducing bone fractures. This is a first clamp piece in which a first pressure tip for pressing and supporting the bone is formed at the front end, a first handle is provided at the rear end, and a plurality of through holes are formed between the first pressure tip and the first handle. class; It is connected to the first clamp piece in a cross-movement manner, has a second pressure tip portion corresponding to the first pressure tip portion and pressurizing and supporting the bone, and has a second handle portion at the rear end portion, the second pressure tip portion and the second pressure tip portion. A second clamp piece provided with a plurality of connecting bolts inserted into a selected one of the through holes between the two handles; and a nut coupled to the connecting bolt inserted into the through hole to connect the first clamp and the second clamp to be cross-movable.
The fixing clamp device for bone fracture reduction of the present invention configured as described above has excellent reduction performance because the clamp piece can be disassembled and assembled as well as adjusted in position with each other, so that the pressure point on the bone can be adjusted according to the shape of the fracture. In addition, access to the surgical site is easy, so it can be used very usefully when the fracture site is deep.

Description

Fixed clamp device for reduction of bone fracture {Clamp device for reduction of bone fracture}

The present invention relates to a clamp device used for reduction of a fractured portion of a bone, and more particularly, the pressure point to the bone can be adjusted according to the shape of the fracture, thereby providing excellent reduction performance and It relates to an easily accessible fixing clamp device for reducing bone fractures.

When bones are broken or cracked due to various accidents, various treatment methods for restoring damaged bones to their original state are known. For example, in the case of a simple fracture with a cracked bone, a cast is applied to induce natural union of the bone, and when natural union is impossible due to severe fracture conditions such as the broken bone being misaligned, a metal plate and screws are applied after matching the fractured bone. A surgical operation is performed to immobilize the back. The method of fixing a bone with a metal plate and screws has a structure in which a metal plate is attached to a fractured portion of a bone and then the metal plate is fixed to the bone using screws. Naturally, the shape of the metal plate varies according to the shape of the damaged bone.

Reduction of the fracture means to return the bone to its original position by matching the broken bone fragment to its original state. For fracture reduction, there is a non-invasive reduction technique in which bone fragments are aligned by applying force from the outside without incising the skin, and an open reduction technique in which the skin is incised and the broken bone fragment is exposed and aligned while looking at it.

In addition, a fixed clamp, which is a tool for gripping and reducing a broken bone fragment, is used in the open reduction technique. The fixing clamp, approximately, as shown in Figure 1, takes the form of a pair of scissors.

1 is a perspective view of a conventional fixing clamp 10 for bone fracture reduction.

As shown, the conventional fixing clamp 10 is composed of a pair of clamp pieces 12 and 14 and a connecting pin 16 connecting the clamp pieces. One side clamp piece 12 has a handle portion 12a, a cross connection portion 12e, and a pressure tip portion 12c. In addition, the other clamp piece 14 also has a handle portion 14a, a cross connection portion 14e, and a pressure tip portion 14c. Both clamp pieces 12 and 14 are linked via a connecting pin 16 in a state where the cross connection portions 12e and 14e face each other.

The fixing clamp 10 having the above configuration is obtained by gripping the handle portions 12a and 14a in a state in which the target portion to be reduced is positioned between the pressure tip portions 12c and 14c. The pressure tip portions 12c and 14c allow the bones to fuse.

As a background art related to this, Korean Patent Registration No. 10-1924720 (fracture reduction mechanism) has been disclosed.

The disclosed fracture reduction mechanism is used together with a fastening mechanism for fastening a fixing plate to a broken part of a bone in order to restore a pair of bones that have been displaced by splitting into two by a fracture to their original positions, It includes a pair of rotation members that enable the displaced bones to be aligned to their original positions by manipulation by an operator at a position spaced apart from the affected area, but at least one of the pair of rotation members is aligned with each other on the XY plane. A hinge portion that connects the relative rotation to be possible; An insertion unit into which a finger is inserted so as to be manipulated by a operator's finger; a contact portion provided on the opposite side of the insertion portion with the hinge portion interposed therebetween, and contacting one of the pair of displaced bones according to the movement of the insertion portion; And in a state in which the displaced bones are located in the space between the hinge part of each rotating member and the pair of contact parts, a fastening mechanism is passed so that a procedure for binding the displaced bones using a fastening mechanism is possible It consists of a binding guide part having a through hole formed between the hinge part and the contact part.

Korean Registered Patent Publication No. 10-1924720 (apparatus for reducing fractures) Korean Registered Patent Publication No. 10-2030140 (pin clamp for extracorporeal fixation device for fracture treatment)

The present invention was created to solve the above problems, and the pressure point for the bone can be adjusted according to the shape of the fracture, so the reduction performance is excellent, and access to the surgical site is easy, which can be conveniently used when the fracture site is deep. Bone An object of the present invention is to provide a fixing clamp device for reducing fractures.

In the fixing clamp device for conquering bone fractures of the present invention as a means of solving the problems for achieving the above object, a first pressure tip for pressurizing and supporting a bone is formed at the front end and a first handle is provided at the rear end, wherein the first a first clamp piece having a plurality of through-holes formed between the pressure tip and the first handle; It is connected to the first clamp piece in a cross-movement manner, has a second pressure tip portion corresponding to the first pressure tip portion and pressurizing and supporting the bone, and has a second handle portion at the rear end portion, the second pressure tip portion and the second pressure tip portion. A second clamp piece provided with a plurality of connecting bolts inserted into a selected one of the through holes between the two handles; and a nut coupled to the connecting bolt inserted into the through hole to connect the first clamp and the second clamp to be cross-movable.

In addition, a plurality of female screw holes are formed through the second clamp piece between the second pressure tip portion and the second handle portion, and the connection bolt; A torque receiver formed at one end of the male screw part and receiving rotational force provided from the outside, which is for adjusting the degree of protrusion of the male screw part screwed into the female screw hole to be position-adjustable and the connection bolt to the second clamp piece. Have an ice section.

In addition, another fixing clamp device for bone fracture reduction of the present invention as a means of solving the problem for achieving the above object is extended in the longitudinal direction, the main handle is formed at the rear end, and the front end is curved in opposite directions to each other. a central clamp piece having a first central pressure tip and a second central pressure tip for pressing and supporting the bone, and having a plurality of connection bolts between the main handle and the first and second central pressure tips; It has a first handle portion corresponding to the main handle portion and a first pressing tip portion corresponding to the first central pressing tip portion, and a plurality of through-holes are formed to pass selected connection bolts among the connecting bolts, and one of the central clamp pieces A first clamp piece positioned on the side to enable cross movement; It is located on the opposite side of the first clamp piece with the central clamp piece interposed therebetween, has a second handle portion corresponding to the main handle portion, and a second pressure tip portion corresponding to the second central pressure tip portion, among the connecting bolts a second clamp piece having a plurality of through-holes through which selected connecting bolts pass, and positioned to enable cross movement on the other side of the center clamp piece; and a nut connecting the first and second clamp pieces to the central clamp piece to support the first and second clamp pieces so as to cross move independently of each other.

In addition, a plurality of female screw holes are formed through the main handle of the central clamp piece and the first and second central pressure tips, and the connecting bolt; It has a male threaded portion protruding toward the first and second clamps in a state of being screwed into the female threaded hole, and a torque receiving portion integrally formed with both ends of the male threaded portion and receiving rotational force provided from the outside.

The fixing clamp device for bone fracture reduction of the present invention configured as described above has excellent reduction performance because the clamp piece can be disassembled and assembled as well as adjusted in position with each other, so that the pressure point on the bone can be adjusted according to the shape of the fracture.

In addition, access to the surgical site is easy, so it can be used very conveniently when the fracture site is deep.

1 is a perspective view of a conventional fixing clamp for bone fracture reduction.
Figure 2 is an exploded perspective view of a fixing clamp device for reducing bone fractures according to a first embodiment of the present invention.
3 and 4 are views for explaining a method of using the fixing clamp device shown in FIG. 2 .
Figure 5 is an exploded perspective view showing a modified example of the fixing clamp device for bone fracture reduction according to the first embodiment of the present invention.
Figure 6a is a cross-sectional view along line AA of Figure 5, Figure 6b is a cross-sectional view for explaining the position control method of the connection bolt shown in Figure 5.
7 is an exploded perspective view of a fixing clamp device for reducing bone fractures according to a second embodiment of the present invention.
FIG. 8 is a plan view of the fixing clamp device shown in FIG. 7;

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

The fixing clamp device of the present invention is used during surgery and takes the form of scissors, but can appropriately respond to the shape of the fracture line by adjusting the relative position of the pressure tip for pressing the bone as necessary.

The basic configuration of such a clamp device is that a first pressure tip portion for pressurizing and supporting a bone is formed at the front end, a first handle portion is provided at the rear end, and a plurality of through holes are formed between the first pressure tip portion and the first handle portion. A first clamp piece and; It is connected to the first clamp piece in a cross-movement manner, has a second pressure tip portion corresponding to the first pressure tip portion and pressurizing and supporting the bone, and has a second handle portion at the rear end portion, the second pressure tip portion and the second pressure tip portion. A second clamp piece provided with a plurality of connecting bolts inserted into a selected one of the through holes between the two handles; It is composed of a nut that is combined with a connecting bolt inserted into the through hole and connects the first clamp and the second clamp to be cross-movable.

In addition, the clamp device of the present invention extends in the longitudinal direction and has a main handle at the rear end, and a first central pressure tip and a second central pressure tip that are curved in opposite directions to each other at the front end and pressurize and support the bone. a central clamp piece provided with a plurality of connecting bolts between the main handle and the first and second central pressure tips; It has a first handle portion corresponding to the main handle portion and a first pressing tip portion corresponding to the first central pressing tip portion, and a plurality of through-holes are formed to pass selected connection bolts among the connecting bolts, and one of the central clamp pieces A first clamp piece positioned on the side to enable cross movement; It is located on the opposite side of the first clamp piece with the central clamp piece interposed therebetween, has a second handle portion corresponding to the main handle portion, and a second pressure tip portion corresponding to the second central pressure tip portion, among the connecting bolts a second clamp piece having a plurality of through-holes through which selected connecting bolts pass, and positioned to enable cross movement on the other side of the center clamp piece; It may also be composed of a nut that connects the first and second clamp pieces to the central clamp piece and supports the first and second clamp pieces to cross move independently of each other.

2 is an exploded perspective view of a fixing clamp device 30 for reducing a bone fracture according to a first embodiment of the present invention, and FIGS. 3 and 4 are views for explaining how the fixing clamp device shown in FIG. 2 is used. .

As shown, the clamp device 30 according to this embodiment includes a first clamp piece 32, a second clamp piece 34, and a nut 36. The first clamp piece 32 and the second clamp piece 34 form a pair and are coupled to each other, allowing cross movement like scissors. The cross movement means a rotational movement with the connecting bolt 34g as the center of rotation, which will be described later. That is, it is a movement of opening or closing the first and second handle portions 32a and 34a.

The first clamp piece 32 extends in the longitudinal direction and has a curved shape, and includes a first handle portion 32a, a first pressure tip portion 32c, and a cross connection portion 32e.

The first handle portion 32a is formed at the rear end of the first clamp piece 32 and has a ring shape into which a user's finger can be inserted. As long as the user can handle the first clamp piece 32, the shape of the first handle portion 32a can be varied.

The first pressure tip portion 32c is formed at the distal end of the first clamp piece 32, and presses and supports the fractured portion of the bone B in the direction of the arrow b. To achieve this purpose, the shape of the first pressure tip 32c itself may have a general structure.

The cross connection portion 32e is provided between the first pressure tip portion 32c and the first handle portion 32a, and is a portion in contact with the cross connection portion 34e of the opposing second clamp piece 34. A plurality of through holes 32g are formed in the cross-connection portion 32e. The through hole 32g is a hole spaced apart along the longitudinal direction of the first clamp piece 32 and accommodates a connecting bolt 34g to be described later.

The second clamp piece 34 is connected to the first clamp piece 32 so as to be capable of cross movement, extends in the longitudinal direction and takes a curved shape, and includes a second handle portion 34a and a second pressure tip portion 34c. ), and a cross connection portion 34e. The second handle portion 34a corresponds to the first handle portion 32a and takes the shape of a ring. The shape of the second handle may be varied as needed.

The second pressure tip portion 34c is formed at the front end of the second clamp piece 34 and serves to pressurize and support the bone B to be treated in the direction of the arrow b. As long as this function can be performed, the shape of the second pressure tip 34c can be changed.

The cross connection portion 34e is an area where a plurality of connection bolts 34g are fixed, and is interviewed with the cross connection portion 32e of the first clamp piece 32. The connection bolt 34g is a male threaded rod fixed to the inner region of the cross connection portion 34e, and the selected connection bolt 34g is inserted into the selected through hole 32g. Which connection bolt 34g is inserted into which through hole 32g to be used is determined differently depending on the shape of the fractured part.

The number of connecting bolts 34g may vary depending on the case. For example, one may be applied, three may be applied as shown in FIG. 2, or four or more may be installed. In addition, the number of through holes 32g and connecting bolts 34g need not be the same.

The nut 36 is a part coupled to the connecting bolt 34g passing through the through hole 32g, and in order to change the relative position of the second clamp piece 34 with respect to the first clamp piece 32, It is combined with the connecting bolt 34g inserted into the hole 32g.

A method of conquering a fracture portion of a bone using the fixing clamp device 30 having the above structure is as follows.

First, as shown in FIG. 3, when the fracture line (F) extends in the longitudinal direction of the bone (B), when the outer portion of the bone (B) is pressed in the direction of the arrow b with the fracture line (F) in between. Therefore, the central portions of both cross-connecting portions 32e and 34e cross each other. In other words, after inserting the connecting bolt 34g at the center of the second clamp piece 34 into the through hole 32g located approximately in the center of the through hole 32g of the first clamp piece 32, the nut 36 is coupled. is to do

When the assembly of the first and second clamp pieces 32 and 34 is completed, in a state where the first and second pressure tips 32c and 34c are placed in place, the first and second handles 32a and 34a in the direction of the arrow a. As the handle is closed, the first and second pressing tips 32c and 34c press the fractured portion of the bone B in the direction of the arrow b to promote bone union.

However, if the fracture line F is inclined with respect to the longitudinal direction of the bone B, as shown in FIG. 4, the first clamp piece 32 is moved in the direction of the arrow e, and the first and second pressure tips 32c, 34c) are set facing each other with the fracture line (F) interposed therebetween. That is, a virtual straight line connecting the first pressure tip portion 32c and the second pressure tip portion 34c is positioned so as to be orthogonal to the fracture line F as much as possible.

In this state, when the first handle 32a and the second handle 34a are pulled in the direction of arrow a, the first and second pressure tips 32c and 34c are tightened and the bone B is pressed in the direction of arrow b. .

In particular, the coupling of the first clamp piece 32 and the second clamp piece 34 in this embodiment is made in a state where the first and second clamp pieces 32 and 34 are inserted into the body. In other words, the first and second clamp pieces 32 in a separated state are sequentially inserted into the body, the first and second pressure tips 32c and 34c are positioned at the destination, and then the cross connection portions 32e and 34e are crossed. and inserting a connecting bolt (34g) into the mutually adjacent through hole (32g) and then coupling the nut (36).

In this way, setting the fixing clamp device 30 is very simple by sequentially inserting the first and second clamp pieces 32 and 34 into the body in a separated state and assembling them after insertion. In the conventional fixing clamp (10 in FIG. 1), since both clamp pieces are already connected, both clamp pieces must enter the body at the same time, so it is easy to get caught in intermediate obstacles (blood vessels, bones, nerve tissue), making it difficult to enter. many.

5 is an exploded perspective view showing a modified example of the fixing clamp device 30 for reducing bone fractures according to the first embodiment of the present invention, and FIG. 6a is a cross-sectional view along line A-A of FIG. In addition, Figure 6b is a cross-sectional view for explaining the position control method of the connecting bolt shown in Figure 5.

Hereinafter, the same reference numerals as the above reference numerals refer to the same members having the same functions, and repeated description thereof will be omitted as much as possible.

As shown, the connection bolt 34g provided in the cross connection portion 34e of the second clamp piece 34 can be separated and positioned so as to be adjustable. To this end, a plurality of female screw holes 34m are formed between the second pressure tip portion 34c and the second handle portion 34a, that is, at the point where the connecting bolt 34g is located.

In addition, the connecting bolt 34g is composed of a male screw portion 34h screwed into the female screw hole 34m and a torque receiving portion 34k. The male screw portion 34h is a portion screwed into the female screw hole, and the torque receiving portion 34k is a portion that receives rotational force applied from the outside. In other words, it may be a part where the front end of the surgical driver is fitted. The user can pivot the connection bolt 34g while inserting the screwdriver into the groove (no reference numeral) of the torque receiving unit 34k.

The reason for pivoting the connection bolt 34g is to adjust the degree of protrusion (H in FIG. 6a) of the connection bolt 34g to one side 34b of the second clamp piece 34, or to use it during the operation This is to temporarily remove the connecting bolt (34g) that does not work.

6B is a state in which the upper end of the connecting bolt 34g is completely lowered to the lower portion of one side surface 34b. In this way, by locating the connection bolt 34g lower than the one side surface 34b, the rotatable angular range of the first clamp piece 32 increases. This is because when the first clamp piece 32 rotates, it is not caught on a neighboring connecting bolt. If all three connecting bolts 34g protrude, the rotation of the first clamp piece 32 may be restricted by being caught by the peripheral connecting bolts 34g.

7 is an exploded perspective view of a fixing clamp device 40 for reducing bone fractures according to a second embodiment of the present invention, and FIG. 8 is a plan view of the fixing clamp device shown in FIG. 7 .

As shown, the fixed clamp device 40 according to the second embodiment includes a central clamp piece 42, a first clamp piece 44, a second clamp piece 46, and a nut 36. do.

The central clamp piece 42 extends in the longitudinal direction and has a main handle portion 42a at the rear end and first and second central pressure tip portions 42c and 42e at the front end. The main handle portion 42a is a portion that the user holds by hand. The first central pressure tip 42c and the second central pressure tip 42e are formed at ends of portions curved away from each other, and press and support the bone to be fused.

In addition, three connecting bolts 42f are spaced apart from each other between the main handle 42a and the first and second central pressure tips 42c and 42e. The connecting bolt 42f is coupled to the female threaded hole 42b formed on the center clamp piece 42 to be position-adjustable. When the connecting bolt 42f is turned using a surgical screwdriver, the position of the connecting bolt 42f can be adjusted and the connecting bolt 42f can be separated as needed.

The connection bolt 42f is composed of a round bar-shaped male threaded portion 42h and torque receiving portions 42g integrally formed at both ends of the male threaded portion 42h. The torque receiving portion 42g has a groove (no reference numeral) into which a surgical screwdriver is inserted and turned. The user may rotate the connecting bolt 42f with a screwdriver inserted into the torque receiving unit 42g.

The first clamp piece 44 has a first handle portion 44a and a first pressure tip portion 44c. The first handle portion 44a corresponds to the main handle portion 42a and takes the form of a ring so that the user can insert a finger therein. The first pressure tip portion 44c corresponds to the first central pressure tip portion 42c, and presses and supports the bone interposed between the first central pressure tip portion 42c.

In addition, a plurality of through holes 44g are provided in the central portion of the first clamp piece 44. The through hole 44g is a hole through which a selected connecting bolt among the connecting bolts 42f passes. The number of through holes 44g varies according to need.

After inserting an arbitrary connecting bolt 42f into the through hole 44g, in a state in which the nut 36 is coupled, when the first handle 44a and the main handle 42a are closed in the direction of the arrow e, the first The central pressure tip portion 42c and the first pressure tip portion 44c approach in the direction of arrow m and pressurize and support the fractured bone.

The second clamp piece 46 is located on the opposite side of the first clamp piece 44 with the central clamp piece 42 interposed therebetween. The second clamp piece 46 has a second handle portion 46a and a second pressure tip portion 46c. In addition, a plurality of through holes 46g are provided in the central portion of the second clamp piece 46. The through hole 46g is a hole through which the connection bolt 42f passes. After passing the connecting bolt 42f through the through-hole 46g and filling the nut 36, when the main handle 42a and the second handle 46a are closed in the direction of the arrow f, the second central pressure is applied. The tip portion 42e and the second pressure tip portion 46c approach in the direction of arrow n and press and support the bone interposed therebetween.

In this way, the fixed clamp device 40 according to the second embodiment has a structure in which the first clamp piece 44 and the second clamp piece 46 are mounted on both sides of one central clamp piece 42, , can simultaneously reduce two fractures at once.

In addition, as in the first embodiment, the central clamp piece 42, the first clamp piece 44, and the second clamp piece 46 are inserted into the body in a state of being separated from each other and then assembled.

In the above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art within the scope of the technical idea of the present invention.

10: fixed clamp 12: clamp piece 12a: handle part
12c: pressure tip part 12e: cross connection part 14: clamp piece
14a: handle part 14c: pressure tip part 14e: cross connection part
16: connection pin 30: fixed clamp device 32: first clamp piece
32a: first handle portion 32c: first pressure tip portion 32e: cross connection portion
32g: through hole 34: second clamp piece 34a: first handle
34b: one side 34c: second pressure tip portion 34e: cross connection portion
34g: connecting bolt 34h: male screw part 34k: torque receiving part
34m: female screw hole 36: nut 40: fixed clamp device
42: central clamp piece 42a: main handle 42b: female screw hole
42c: first central pressure tip portion 42e: second central pressure tip portion 42f: connecting bolt
42g: torque receiving part 42h: male screw part 44: first clamp piece
44a: first handle portion 44c: second pressure tip portion 44g: through hole
46: second clamp piece 46a: second handle portion 46c: second pressure tip portion
46g: through hole

Claims (4)

delete a first clamp piece having a first pressure tip portion for pressurizing and supporting the bone, a first handle portion provided at the rear end portion, and a plurality of through holes formed between the first pressure tip portion and the first handle portion; It is connected to the first clamp piece in a cross-movement manner, has a second pressure tip portion corresponding to the first pressure tip portion and pressurizing and supporting the bone, and has a second handle portion at the rear end portion, the second pressure tip portion and the second pressure tip portion. A second clamp piece provided with a plurality of connecting bolts inserted into a selected one of the through holes between the two handles; A nut coupled to the connecting bolt inserted into the through hole to connect the first clamp and the second clamp to be cross-movable,
A plurality of female screw holes are formed through the second clamp piece between the second pressure tip and the second handle,
The connection bolt; A torque receiver formed at one end of the male screw part and receiving rotational force provided from the outside, which is for adjusting the degree of protrusion of the male screw part screwed into the female screw hole to be position-adjustable and the connection bolt to the second clamp piece. Equipped with ice,
Fixed clamp device for reduction of bone fractures. It extends in the longitudinal direction and has a main handle at the rear end, and a first central pressure tip and a second central pressure tip that are curved in opposite directions to each other and press and support the bone at the front end, and the main handle and a central clamp piece provided with a plurality of connection bolts between the first and second central pressure tips;
It has a first handle portion corresponding to the main handle portion and a first pressing tip portion corresponding to the first central pressing tip portion, and a plurality of through-holes are formed to pass selected connection bolts among the connecting bolts, and one of the central clamp pieces A first clamp piece positioned on the side to enable cross movement;
It is located on the opposite side of the first clamp piece with the central clamp piece interposed therebetween, has a second handle portion corresponding to the main handle portion, and a second pressure tip portion corresponding to the second central pressure tip portion, among the connecting bolts a second clamp piece having a plurality of through-holes through which selected connecting bolts pass, and positioned to enable cross movement on the other side of the center clamp piece;
Including a nut that connects the first and second clamp pieces to the central clamp piece and supports the first and second clamp pieces so as to cross move independently of each other,
Fixed clamp device for reduction of bone fractures. According to claim 3,
A plurality of female screw holes are formed through the main handle of the central clamp piece and the first and second central pressure tips,
The connection bolt;
A male screw portion protruding to the side of the first and second clamps in a state of being screwed into the female screw hole;
Having a torque receiving portion integrally formed at both ends of the male screw portion and receiving rotational force provided from the outside,
Fixed clamp device for reduction of bone fractures.

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