KR200410408Y1 - Surgical tools for tightening up a cranial-flap clamp - Google Patents

Abstract

The present invention relates to a device for pressing and tightening the pressure plate of the clamp used to fasten the skull and the incision pieces to each other after the surgical procedure of the skull, in particular, improved to enable vertical movement of the tightening portion of the clamp substrate The present invention relates to a clamp tightening device capable of symmetrically equally vertical pressing of the entire pressure plate descending on an insertion column provided in the insert plate, thereby enabling a firm bite fixation of the skull and the incision piece positioned between the substrate and the pressure plate.

The clamping device for the cranial clamp according to the present invention is a holding portion, the first bent portion bent in the form of an obtuse angle from the holding portion, bent in the bending direction opposite to the bending direction of the first bending portion to the holding portion and the first bending A second bent portion that forms an acute angle with the portion, a third bent portion that is bent in the same bending direction as the bending portion of the first bent portion with respect to the gripping portion, and forms an obtuse angle with the second bent portion, and an end portion of the third bent portion; A first powder and a second powder, each of which has a slit formed therein and is horizontally fastened to accommodate the insertion pillar of the clamp; A central shaft pin provided in the second bent portion of each of the two powders arranged in a non-overlapping shape to connect the two powders; First and second guide pins respectively provided inside a start point of the second bent portion of each of the first and second powders; First and second guide bodies each having guide holes for allowing horizontal sliding of the guide pins; And first and second connecting bodies connecting the first and second guide bodies and the third bent portions of the respective powders.

Surgery, skull, tightening, clamp, powder, grip, vertical, guide, connector, elastic means

Description

Fasteners for cranial clamps {SURGICAL TOOLS FOR TIGHTENING UP A CRANIAL-FLAP CLAMP}

1 is a state of use of the tightening device shown in US Pat. No. 6,641,588,

2a and 2b is a perspective view of the combination of the tightening device according to the present invention,

3 is an exploded perspective view of the tightening device according to the present invention,

4a and 4b is a state of use of the tightening device according to the present invention,

5 is a schematic plan view of the skull closed by a clamp,

6 is a perspective view of a tightening device having a different tightening unit than that shown in FIG. 2A.

<Description of the symbols for the main parts of the drawings>

T: Fastener C1: Skull

C2: Incision C3: Boundary Line

10A, 10B: Powder 11: Gripping Part

13: 1st bend 15: 2nd bend

17: third bend 19,119: tightening

21: center pin 23,25: guide pin

31A, 31B: Guide 31a: Guideman

33A, 33B: Connector 18, 118: 4th bend

40: elastic means

The present invention relates to a device for pressing and tightening the pressure plate of the clamp to the substrate used to fasten the skull and the incision pieces to each other after surgical operation of the skull,

In particular, the clamping unit is vertically moved to enable vertical symmetrical equalizing of the entire pressing plate descending on the insertion column provided on the substrate of the clamp, so as to secure a firm bite of the skull and the incision piece positioned between the substrate and the pressing plate. It relates to a clamp tightening device that makes this possible.

Applicant of the present invention registered Utility Model No. 0275692 (2002.05.03) 『Skeleton Fixation Device』,

Utility Model Registration No. 0332457 (October 29, 2003) `` Skull Button '', and

Utility Model Registration No. 064174 (2004.09.30) developed a number of medical device-related technologies, including improvements related to the field of cranial-flap clamps such as `` cranial fixation device '', and applied them as industrial property rights for examination. It has been passed (decision to maintain technology evaluation in case of utility model).

The present invention is also a technology related to the improvement of medical instruments, and more particularly to a tightening device of the skull fixing clamp used in the skull surgery,

Prior art related to this is US Patent No. 6,641,588 (2003.11.04) by Medtronic, Inc., `` Surgical Tool for Tensioning a Cranial-Flap Clamp ''. There is,

The tightening device shown in the US patent publication is shown in FIG.

As shown in Figure 1, the mechanism of the US patent is a type of conventional tightening device

As shown in more detail in Figure 4b and 5 using a plurality of screws in the skull or incision conventionally for fastening the skull (C1) and the incision (C2), and using the wires interconnecting the screw and the screw Instead of the way

Inserted into the substrate 60, the insertion column 63 exposed through the boundary line C3 between the skull and the incision to rise in the center of the substrate, and inserted into the insertion column to the anti-slip projection (63b) of the pillar The clamp 60 is made of a pressure plate 65 is prevented from retreating.

For reference, the clamp 60 shown in FIG. 4A is simply improved as described in detail below for the tightening device according to the present invention, unlike the conventionally known one.

The tightening device of the US patent is a functional part 30 interconnected by a central shaft pin to serve as a functioning point of the lever, the grip portion 26, 28 pressed by hand, and the insertion column 63 of the clamp 60 It consists of two powders 10 each having a fastening portion 32 and 36 having slits 34 and 38 which can accommodate a).

A leaf spring 40 is provided on the inner surfaces of the grip portions 26 and 28 of each of the powders 10 so that elasticity acts in the direction in which the tightening portions 32 and 36 are engaged.

When the holding parts 26 and 28 are pressed by the sieves 32 and 36 and the slits 34 and 38 of the clamping device, the pillars 63 of the clamp 60 are pressed. The force acts in the direction in which the tightening portion is to be opened starting at 30,

Since the upper fastening part is restricted by the locking protrusion 63a of the clamp insertion column 63, the lower fastening part 32 presses the pressure plate 65 toward the substrate 61.

Since the tightening parts 32 and 36 of the tightening device make circular motions based on the acting part 30, in the state of FIG. 1, in particular, the lower tightening part 32 does not symmetrically equally press the pressure plate 65.

The pressing plate is pressed in a form in which more force acts on the end portion of the tightening part.

Because of this, the skull (C1) and the incision piece (C2) can not be tightened while pressing evenly, there is a problem that it is impossible to secure the skull firmly without play.

The present invention is proposed to solve the problem that can not apply a uniform pressure to the pressure plate of the clamp due to the tightening unit to the circular motion around the working unit, such as the conventional US Patent US Pat. No. 6,641,588.

In this regard, an object of the present invention is to provide a tightening device having a structure that enables vertical movement of the tightening part.

Another object of the present invention is to provide a tightening device having an appropriate bent portion in order to prevent the clamping device from being caught on the head of the surgical patient and preventing the smooth clamping process from proceeding.

Furthermore, an object of the present invention is to provide a tightening device incorporating elastic means for exerting elasticity in the direction in which the tightening portion is engaged.

Fastening device for cranial fixation clamp according to the present invention in order to achieve the above object is a substrate located on the inner surface of the skull and the incision, protrudes on the upper surface of the substrate exposed through the boundary line between the skull and the incision and a plurality of the outer peripheral surface It consists of a pressure plate having a non-slip projection protruding and the insertion column protruding the locking projection on the upper portion, and the insertion hole to be fitted to the insertion pillar, and a plurality of tangy pieces formed between the insertion hole and the incision around the insertion hole. In order to fasten and fix the skull and the incision piece located between the substrate and the pressing plate by tightening the pressing plate fitted to the insertion column in the clamp toward the substrate.

The holding portion, the first bending portion bent in an obtuse angle form the holding portion, the second bending portion bent opposite to the bending direction of the first bending portion relative to the holding portion and acute angle with the first bending portion, the wave A third bending portion bent in the same bending direction as that of the first bending portion with respect to the branch and an obtuse angle with the second bending portion, and formed at an end portion of the third bending portion and receiving the insertion pillar of the clamp; The first powder and the second powder is formed with a slit that does not pass through each of the horizontal fasteners;

A central shaft pin provided in the second bent portion of each of the two powders arranged in a non-overlapping shape to connect the two powders;

First and second guide pins respectively provided inside a start point of the second bent portion of each of the first and second powders;

First and second guide bodies each having guide holes for allowing horizontal sliding of the guide pins; And

Including the first and second guide body and the first and second connecting body connecting the third bent portion of each powder,

The first guide body is the second powder, the second guide body is the first powder, the first connector is the first powder, and the second connector is the same as the second powder, respectively. On a plane

When pressing the holding portion of the powder is characterized in that the tightening portion is opened while moving vertically to move the pressing plate of the clamp toward the substrate.

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

In each of the figures below FIG. 2A, the same reference numerals, in particular, the tens and ones digits, or the tens, ones and digits, have the same function, and unless otherwise specified, each member The members referred to by reference numerals can be regarded as members conforming to these criteria.

Reference numerals of FIG. 1 and reference numerals of the drawings below FIG. 2A are irrelevant.

In describing the tightening device T according to the present invention in the present specification, if the direction reference is specified with reference to FIGS. 2A, 3, and 4A,

The contact surface of the symmetrical first and second powders 10A, 10B, which are coupled in a non-overlapping manner through the central shaft pin 21, is defined as the inner surface and vice versa.

When the fastening portion 19 of each of the powders 10A and 10B is retracted and opened from the center shaft pin 21, the substrate 61 side of the clamp 60 is set to the lower side and the opposite side to the upper side. .

2A, 2B and 3, the tightening device T according to the present invention is for the clamp 60 as shown in Figs. 4A and 5.

The clamp 60 is for fastening and fixing the incision (C2) cut during the brain surgery to the skull (C1), the substrate 61, the insertion column 63 raised on the upper surface of the substrate 61, and the insertion column It consists of a pressure plate 65 coupled to (63).

The substrate 61 is basically an inverted dome shape and is arranged in contact with the inner surface of the skull C1 and the cut piece C2, and teeth 61a are formed around the substrate 61 to improve fixation force.

The insertion column 63 formed at the center of the upper surface of the substrate 61 is exposed through the boundary line C3 between the skull C1 and the incision piece C2, and a plurality of anti-slip protrusions 63b protrude on the outer circumferential surface thereof. The engaging projection 63b protrudes. The difference between the known clamp and the illustrated clamp 60 is the locking projection 63a formed in the insertion column 63, which is more than the slit 19a of the tightening portion 19 of the tightening device T according to the present invention. The slit of the tightening part is caught by having a large inner area, so that the tightening part is restricted from escaping to the upper part of the locking protrusion 63a of the clamp 60 insertion column 63.

In addition, the pressure plate 65 is provided with an insertion hole 65b fitted to the insertion column 63, and a plurality of tangerine pieces 65c formed with an incision 65d around the insertion hole 65b. The tooth 65a is formed in the circumference for improving the fixing force.

When the pressing plate 65 is inserted into the insertion column 63 through the insertion hole 65b, the first pass through the locking projection 63a,

The locking projection (63a) is a wedge shape

The tungsten pieces 65c around the insertion hole 65b of the pressure plate 65 are separated from each other at the starting point 65d and spaced apart from each other and are raised to increase the size of the insertion hole 65b. After passing through the locking projection 65a,

The pressure plate 65 is passed through the engaging projection (63a) of the pillar 63 is coupled to each other.

First, the tightening device (T) is a form in which two powders 10A and 10B of mutually symmetrical shapes are coupled through the central shaft pins 21 so as not to overlap each other, as shown in FIGS. 3 and 4B. 10A and 10B

The holding part 11 corresponding to the part which can be grasped by a hand,

The first bent portion 13 bent in a form forming an obtuse angle θ1 at the grip portion 11,

A second bent portion 15 which is bent in the bending direction of the first bent portion 13 with respect to the gripping portion 11 and forms an acute angle θ2 with the first bent portion;

A third bent portion 17 that is bent in the same bending direction as the first bent portion 13 with respect to the grip portion 11 and forms an obtuse angle θ3 with the second bent portion 15, and

A slit 19a formed at the end of the third bent portion 17 and accommodating the insertion column 63 of the clamp 60 but not passing through the latching projection 63a is formed and is horizontally formed. It has a pregnant woman 19, respectively.

In the drawing, each of the powders 10A and 10B has the same shape as that of a flat plate,

In particular, the gripping portion 11, the first and second bent portions 13, 15 are located on the same plane,

The third bent portion 17 and the tightening portion 19 are in the same plane form.

Furthermore, in each of the powders 10A and 10B, a fourth bent portion is further formed between the third bent portion and the tightening portion.

The tightening device is preferable because it is suitable to prevent the progress of the smooth clamp tightening operation caught on the head of the surgical patient.

Although the shape of the fourth bent portion may be variously modified, the fourth bent portion 18 illustrated in FIGS. 2A to 4B is bent in the same direction as that of the tightening portion 19, that is, in the vertical direction. Is,

The fourth bent portion 118 of the tightening apparatus shown in FIG. 6 is bent in a direction orthogonal to the opening direction of the tightening portion 119 (reference numeral 119a is a slit).

Previously, the powders 10A and 10B were referred to as symmetrical shapes. In the illustrated form, the remaining powder parts except the fourth bent part and the tightening part are symmetrical due to the fourth bent part.

2a to 3, the tightening device T according to the present invention is inserted into the shaft hole 15a formed at the center of the second bent portion 15 of each of the two powders 10A and 10B. Is provided with a central axis for connecting the central shaft pin 21 for connecting the two powders,

First and second guide pins 23 provided inside the starting points of the second bent portions 15 of the first and second powders 10A and 10B, respectively (inserted and fixed in the mounting holes 14). (25),

First and second guide members 31A and 31B, each having guide holes 31a formed therein for horizontal sliding of the guide pins 23 and 25, and

First and second connecting bodies 33A and 33B connecting the first and second guides 31A and 31B and the third bent portions 17 of the respective powders 10A and 10B are respectively It includes more.

In particular, the first guide 31A is the second powder 10B, the second guide 31B is the first powder 10A, and the first connecting body 33A is the first powder. 10A and the second connecting body 33B are formed on the same plane as the second powder 10B, respectively.

Therefore, when considering the convenience of manufacturing, as shown in Figure 3, the holding portion 11, the first bent portion 13, and the second bent portion 15 in the powder (10A) (10B) integrally. Manufactured,

The guides 31A and 31B are manufactured separately,

It is preferable that the third bent portion 17, the fourth bent portion 18 and 118, the fastening portions 19 and 119, and the connecting bodies 33A and 33B are integrally manufactured.

Therefore, in connection with FIG. 3, the powders 10A and 10B of the tightening device T named in the present invention are the third or fourth bent portions 17, 18, 118 and the tightening portion ( 19 and 119 are described as being for convenience of explanation related to functions rather than physical division.

Furthermore, the central shaft pin 21 and the guide pins 23 and 25 are riveted after assembling each component,

[Combined body 33A, 33B-third bent part 17-fourth bent part 18, 118-fastener 19, 119 combined body] and each of the powders 10A and 10B Fixing pins 27 and 29 for coupling and fixing the second bent portion 15 of the fixing holes 15b and 33a at the ends of the second bent portion 15 and the ends of the connecting members 33A and 33B. ), Then riveted and welded together to fix the selected obtuse angle (θ3),

Each of the first and second guides 31A and 31B and the first and second connectors 33A and 33B are mutually coupled at an end (for example, integrally formed using welding or a mold). Of course, this assembly may be modified in various ways.

Next, the holding portion 11 or the first bent portion 13 of each of the powders 10A) and 10B further includes elastic means for exerting elasticity so that the tightening portions 19 remain in engagement with each other. It is desirable to

In the drawing, the torsion coil spring type elastic means 40 having both fitting portions 41a and 41b coupled to the fitting hole 13a formed in the first bent portion is arranged.

Unlike the conventional tightening apparatus shown in FIG. 1, the tightening apparatus T having such a structure has a circular motion when the tightening portion 19 of each of the powders 10A and 10B presses the grip portion 11. Since the vertical movement is not the pressure plate 65 of the clamp 60

From the beginning to the end, as the symmetrical equal vertical pressure of the entire platen acts,

That is, the pressure plate 65 meshes with the substrate 61 to firmly and uniformly bite the skull C1 and the cut piece C2,

The pressure plate 65 is prevented from reverse (that is, rising) due to the combination of the anti-slip projection (63b) of the form in which the tangy piece (65c) and the insertion pillar (63) inverted,

The insertion column 63 of the clamp 60 remaining after sealing is cut off and removed.

As such, the vertical movement of the tightening unit (19) (119) is basically the structure of the tightening device (T) according to the present invention and

When the both ends of the powder (10A) (10B) is opened in the shape of the letter X with the axis of the central shaft pin 21, the first and second blood provided inside the starting point of the second bent portion 15, respectively This is because the guide pins 23 and 25 are constrained by the guide holes 31a of the guides 31A and 31B to move horizontally in the guide holes.

As described above, the fastening device for the cranial clamp according to the present invention has a structure that enables vertical movement of the fastening part, so that the symmetrical equal vertical pressure of the entire pressure plate descending on the insertion column provided in the substrate of the clamp is reduced. It is possible to secure a fixed bite of the skull and the incision piece located between the substrate and the pressing plate, and through the appropriate fourth bent portion can be caught in the surgical patient head to prevent the interference of the smooth clamp tightening operation, Furthermore, by introducing the elastic means to the elasticity is exerted in the direction in which the tightening portion is engaged to improve the convenience of use.

In the above description of the present invention with reference to the accompanying drawings with reference to the accompanying drawings having a specific shape and structure, but mainly focused on the present invention is capable of various modifications and changes by those skilled in the art, such modifications and changes are the scope of protection of the present invention Should be interpreted as belonging to.

Claims (5)

A substrate located on the inner surface of the skull and incision, An insertion pillar protruding from the upper surface of the substrate and exposed through the boundary line between the skull and the incision, protruding a plurality of non-sliping protrusions on the outer circumferential surface, and protruding locking protrusions on the upper surface; and In the clamp consisting of a pressure plate having an insertion hole to be inserted into the insertion column, and a plurality of tungsten pieces which are formed with the incision around the insertion hole therebetween. Tightening the pressure plate inserted in the insertion column toward the substrate to fasten and fix the skull and the incision piece located between the substrate and the pressure plate. Holding, A first bent portion bent to form an obtuse angle at the gripping portion, A second bent portion that is bent in a direction opposite to the bending direction of the first bent portion with respect to the gripping portion and forms an acute angle with the first bent portion; A third bent portion that is bent in the same bending direction as the first bent portion with respect to the gripping portion and forms an obtuse angle with the second bent portion, and First and second powders formed at an end portion of the third bent portion and having slits formed therein and horizontally formed with slits that receive the insertion pillars of the clamp and which the locking projections do not pass through; A central shaft pin provided in the second bent portion of each of the two powders arranged in a non-overlapping shape to connect the two powders; First and second guide pins respectively provided inside a start point of the second bent portion of each of the first and second powders; First and second guide bodies each having guide holes for allowing horizontal sliding of the guide pins; And Including the first and second guide body and the first and second connecting body connecting the third bent portion of each powder, The first guide body is the second powder, the second guide body is the first powder, the first connector is the first powder, and the second connector is the same as the second powder, respectively. On a plane And tightening the tightening part while vertically moving the pressing part of the powder so that the pressing plate of the clamp is moved toward the substrate. The method of claim 1, Fastening device for cranial clamps, characterized in that the fourth bent portion is further formed between the third bent portion and the tightening portion in each powder. The method of claim 2, And the fourth bent part is bent in the same direction as the opening direction of the tightening part. The method of claim 2, And the fourth bent portion is bent in a direction orthogonal to the opening direction of the tightening portion. The method according to any one of claims 1 to 4, The gripping portion or the first bent portion of the powder further comprises a tightening device for cranial clamps, characterized in that it further comprises an elastic means for staying in the state in which the tightening portion is engaged with each other.

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