Holder for medical tool

Abstract

The present disclosure relates to a holder for a medical tool to which an impactor, a reamer, or the like used in a surgical procedure is mounted, and more particularly, to a holder for a medical tool having a simple and simple structure, satisfying operational stability and durability, and being interchangeably used. A holder for a medical tool includes: a medical tool including a tool shaft; a holder main body having a tool mounting hole formed therein to insert a medical tool therein; and a tool support device supporting the medical tool inserted into the holder body, in which the tool support device includes a tool support guide member to guide movement of the tool shaft while supporting the tool shaft.

Description

Technical Field

[0001] The present disclosure relates to a holder for medical tools, to which an impactor, reamer, etc. used in surgical operations are mounted, and more specifically, to a holder for medical tools, which has a concise and simple structure, satisfies operational stability and durability, and can be used interchangeably. Background Art

[0002] Generally, surgical treatment of joint diseases includes arthroscopic surgery, chondrocyte transplantation, etc., and includes artificial joint surgery for severe cases. As representative artificial joint surgeries, there are manual joint surgery performed manually by medical staff and robotic artificial joint surgery performed by a robot.

[0003] Robotic artificial joint surgery refers to a surgical procedure in which an artificial joint (or implant) is placed after cutting bone from the joint area by rotating the cutter of a cutting device mounted to the distal end of a position-variable arm of a robot based on information input into a computer, and using cutting tools such as drill bits, reamers for widening drill holes, and impactors for providing a press-fit force.

[0004] Artificial joint surgery is common in artificial knee joint surgery, and artificial hip joint surgery has also been gradually increasing recently.

[0005] Artificial hip joint surgery is generally performed by pre-processing the acetabulum of the hip joint using a reamer, inserting an artificial acetabular cup, pressing and fitting the artificial acetabular cup using an impactor, and then connecting an artificial femoral head.

[0006] Meanwhile, the reamer includes a straight reamer and a curved reamer (or an offset reamer). The straight reamer is formed to have a straight structure in appearance, and the curved reamer (or an offset reamer) is formed to have a curved structure in appearance.

[0007] In addition, the impactor includes a straight impactor whose appearance is shaped to have a straight structure and a curved impactor whose appearance is shaped to have a curved structure.

[0008] As described above, artificial hip joint surgery requires various surgical tools during the surgery, such as straight reamers, offset reamers, straight impactors, and curved impactors, and thus requires a medical tool holder that can stably hold the surgical tools and can be used interchangeably.

[0009] As such a holder for a medical tool, some technologies have been proposed, such as Korean Patent No. 10-1609281 registered on March 30, 2016, entitled "Tool, component kit for a multifunctional tool, and robotic system for the multifunctional tool," but these technologies have the disadvantages of increasing manufacturing and maintenance costs due to excessive components and structural complexity, and hindering reliable surgery due to a high possibility of failure.

[0010] In addition, conventional holders for medical tools have the following problems: during the process of installing the impactor by medical personnel and striking the impactor for surgery, if the striking direction of the hammer is misaligned with the longitudinal direction (i.e., the axial direction of the impactor) to apply an impact force to the impactor in an oblique direction (i.e., the wrong direction), the holder and the impactor may be broken or damaged.

[0011] Furthermore, when the hammer misses the impactor, the impact force is even applied obliquely to the artificial acetabular cup, which not only adversely affects the surgery, but also causes injury or damage to the medical staff (or robot) holding the holder because the impact force of the hammer is transmitted to the medical staff (or robot).

[0012] [Related technical literature]

[0013] [Patent Document]

[0014] (Patent Document 1) Korean Patent Publication No. 10-2020-0115518, entitled “End effector, system, and method for impact prosthesis guided by a surgical robot”

[0015] (Patent Document 2) U.S. Patent No. 8,753,346B2, entitled "Tool, kit of parts for multifunctional tool, and robotic system for the multifunctional tool"

[0016] (Patent Document 3) Korean Patent Publication No. 10-2020-0115518, entitled “End effector, system, and method for impact prosthesis guided by a surgical robot” Summary of the invention Technical issues

[0017] The present disclosure is conceived based on the foregoing description, and one aspect of the present disclosure is to provide a holder for a medical tool, which has a concise and simple structure, satisfies operational stability and durability, and can be used interchangeably.

[0018] Another aspect of the present disclosure is to provide a holder for a medical tool that absorbs and cushions abnormal impact applied to the medical tool. Technical Solution

[0019] According to one aspect of the present disclosure, a holder for a medical tool includes: a medical tool including a tool shaft; a holder body having a tool mounting hole formed therein for inserting the medical tool into the tool mounting hole; and a tool support device for supporting the medical tool inserted into the holder body, wherein the tool support device includes a tool support guide member for guiding the movement of the tool shaft while supporting the tool shaft.

[0020] The tool support guide member may include a sliding support body having an outer peripheral surface coupled with the inner peripheral surface of the tool mounting hole and an inner peripheral surface into which the tool shaft is inserted.

[0021] Furthermore, the holder may further include a holder support member coupled to the holder body.

[0022] The tool mounting hole may include: a guide member mounting groove formed on the inner circumferential surface of the tool mounting hole to place the tool support guide member thereon; a support member mounting groove formed to contact the guide member mounting groove to install a retainer connecting member for mounting the retainer support member; and a tool mounting groove formed at one end of the tool mounting hole for mounting the medical tool.

[0023] The retainer support member may include a retainer support rod, a connecting plate, and an arm connecting member, wherein the retainer support rod is formed in a rod shape and has a first end connected to the retainer body, the connecting plate is formed at a second end of the retainer support rod, and the arm connecting member is connected to the connecting plate.

[0024] The supporting member mounting groove may include a bolt insertion hole including a bolt head insertion groove and a thread insertion groove.

[0025] The holder connecting member may include a bolt inserted into the bolt insertion hole and a stopper pin inserted between the holder supporting rod and the holder body.

[0026] Meanwhile, the tool installation slot may include an elastic pressurizing unit to apply elastic force to the medical tool inserted therein.

[0027] The retainer may further include: an impact reducing device installed in the retainer body to absorb and buffer the impact force applied to the retainer body, and an impact reducing device insertion portion formed in the second end of the tool mounting hole to install the impact reducing device.

[0028] Preferably, the impact reducing device may include: an impact reducing device body, which is formed with a tool insertion hole, and the tool shaft of the medical tool is inserted into the tool insertion hole; an impact absorbing member, which is placed in the impact reducing device body and absorbs the impact applied to the medical tool; and an anti-separation member, which is installed in the impact reducing device body to prevent separation of the impact absorbing member.

[0029] Meanwhile, the holder may further include a tool connecting device configured to restrict the medical tool from being inserted into the tool mounting slot.

[0030] Preferably, the tool connecting device may include: a connecting hole formed to penetrate the retainer body to communicate with the interior of the tool mounting groove; a tool connecting member inserted through the connecting hole; and a locking portion formed in the medical tool so that the tool connecting member can be inserted therein and locked thereto.

[0031] The medical tool may include a straight impactor or a curved impactor, which includes a tool shaft and is used for hip joint surgery, and the impactor may include an impactor retaining member and a stopper, the impactor retaining member is connected to the tool mounting slot to movably support the straight impactor or the curved impactor, the tool shaft is movably inserted therein, and the impactor retaining member is formed with a locking portion, and the stopper restricts the movement of the tool shaft.

[0032] In this case, the stopper may be configured as a stopper pin formed in the tool shaft, the stopper pin corresponding to a portion for connection with the impactor holding member.

[0033] The impactor holding member may include a cylinder which is inserted into the tool shaft and formed with the locking portion, and a moving elongated hole which is formed in a longitudinal direction of the cylinder and restricts movement of the stopper pin.

[0034] The locking portion may include an introduction groove recessed in an inner end portion of the cylinder and a locking groove curvedly extending from the introduction groove.

[0035] At the same time, the medical tool can be provided with the tool shaft and include a straight reamer or a curved reamer used in hip joint surgery, the straight reamer or the curved reamer may include a reamer frame, the reamer frame has a hollow column structure to be placed and mounted on the tool shaft from the outside, and the reamer frame may include the locking part, the locking part is formed in the part to be inserted into the tool mounting groove, the locking part includes an introduction groove and a locking groove, the introduction groove is recessed in the inner end part of the reamer frame, and the locking groove extends curvedly from the introduction groove. Beneficial Effects

[0036] The holder for medical tools according to the present disclosure, although having a concise and simple structure, in which a tool supporting device and a tool connecting device are arranged in a holder body formed into a hollow columnar shape, has the effect of being conveniently used with various medical tools (such as impactors, reamers and markers) that can be interchangeably mounted thereon, and has no cause for malfunction due to the concise and simple structure, and also has the advantages of ensuring operational stability, improving durability and achieving safe surgery.

[0037] Furthermore, the holder for a medical tool according to the present disclosure prevents the medical tool or peripheral devices from being deformed or damaged because the impact absorbing member absorbs and buffers the impact force when it is mounted on the tool shaft of the medical tool subjected to the impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view of a holder for a medical tool according to an embodiment of the present disclosure,

[0039] Figure 2 is a partially exploded perspective view of a holder for a medical tool according to an embodiment of the present disclosure,

[0040] Figure 3 is a cross-sectional view of a holder for a medical tool according to an embodiment of the present disclosure,

[0041] Figure 4a yes Figure 2 A perspective view of part A in

[0042] Figure 4b yes Figure 3 A magnified view of part A in

[0043] Figure 4c yes Figure 3 An enlarged view of part B in FIG.

[0044] Figure 4d yes Figure 3 Magnified view of section C in

[0045] Figure 5is a perspective view of a holder body in a holder for a medical tool according to an embodiment of the present disclosure,

[0046] Figure 6 is an exploded perspective view of a holder body in a holder for a medical tool according to an embodiment of the present disclosure,

[0047] Figure 7a is a view for illustrating a process of mounting a medical tool to a holder for a medical tool according to an embodiment of the present disclosure,

[0048] Figure 7b is a view for illustrating a use state of an impactor installed as a medical tool in a holder for a medical tool according to an embodiment of the present disclosure,

[0049] Figure 8a to Figure 8h is a view for illustrating an impact reduction device in a holder for a medical tool according to an embodiment of the present disclosure, wherein Figure 8a It is an exploded perspective view. Figure 8b is a perspective view for showing the internal structure, Figure 8c is a side view, Figure 8d is an enlarged view of the elastic member. Figure 8e This is an enlarged view of the anti-separation component. Figure 8f is a partial cutaway perspective view, and Figure 8g and Figure 8h is a view for illustrating a use state of the impact reduction device, wherein Figure 8g is a partially enlarged view for illustrating a state in which a hammer normally strikes an impact portion of an impactor, and Figure 8h is a partial enlarged view for illustrating a state in which the hammer misses the striking portion of the impactor,

[0050] Fig. 9 is a perspective view showing another application example of the holder for a medical tool according to an embodiment of the present disclosure,

[0051] Fig.10 is a cross-sectional view showing another application example of the holder for a medical tool according to an embodiment of the present disclosure, and

[0052] Fig.11 is a partially enlarged exploded perspective view of another application example of the holder for a medical tool according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] Next, we will refer to Figures 1 to 11 Exemplary embodiments of the present disclosure are described in detail, wherein like reference numerals are denoted throughout. Figures 1 to 11 The same parts are referred to in the drawings.

[0054] At the same time, detailed descriptions of the components and their operations and effects in the accompanying drawings will be simplified or omitted, and these detailed descriptions are easy for ordinary technicians in the field to understand from general technology. In addition, the present disclosure is characterized by a retainer for medical tools, so the focus will be on illustrating and describing the relevant components, while simplifying or omitting other components. Although the retainer for medical tools according to an embodiment of the present disclosure can be used to hold various medical tools used in surgical operations, etc., the following description will be based on the example of the retainer being applied to a reamer and an impactor used in artificial hip joint surgery.

[0055] Figure 1 is a perspective view of a holder for a medical tool according to an embodiment of the present disclosure, Figure 2 is a partially exploded perspective view of a holder for a medical tool according to an embodiment of the present disclosure, Figure 3 is a cross-sectional view of a holder for a medical tool according to an embodiment of the present disclosure, Figure 4a yes Figure 2 A perspective view of part A in Figure 4b yes Figure 3 A magnified view of part A in Figure 4c yes Figure 3 An enlarged view of part B in FIG. Figure 4d yes Figure 3 Magnified view of section C in Figure 5 is a perspective view of a holder body in a holder for a medical tool according to an embodiment of the present disclosure, and Figure 6 is an exploded perspective view of a holder body in a holder for a medical tool according to an embodiment of the present disclosure. Figure 7a is a view for illustrating a process of mounting a medical tool to a holder for a medical tool according to an embodiment of the present disclosure, and Figure 7b 1 is a view for illustrating a use state of an impactor as a medical tool installed in a holder for a medical tool according to an embodiment of the present disclosure.

[0056] refer to Figures 1 to 7b According to an embodiment of the present disclosure, a holder for a medical tool includes a medical tool t, a holder body 1, a tool support device 2, a tool connecting device 3 and a holder support member 4, and is characterized in that it has a concise and simple structure, meets operational stability and durability, and can be used with various medical tools that can be interchangeably mounted thereon.

[0057] The medical tool t is not particularly limited as long as it is a medical tool having a tool axis t11, but will be described based on an example in which an impactor t1 and a reamer t2 (described later) are provided. In addition, in addition to the impactor or the reamer, the medical tool t may also adopt a marking device having a tool axis. In addition, the impactor t1 may adopt a straight impactor having a straight structure in appearance, but in this embodiment, it will be described based on an example in which a curved impactor having a curved structure in appearance is adopted.

[0058] The curved impactor is roughly shaped like a rod and includes a straight tool shaft t11 ​​to be inserted into the holder body 1, a tool bending portion t12 extending toward a first side of the tool shaft, and a hat-shaped impact portion t13 installed at a second end of the tool shaft and receiving an impact force from a hammer during surgery.

[0059] The curved impactor is provided with an impactor holding member 5, which is movably inserted into the tool shaft t11, coupled to a tool mounting groove 15 (described later) of the holder body 1 and formed with a locking portion 33 (described later). In addition, considering that the curved impactor advances and retreats during surgery, the curved impactor is provided with a stopper 6 installed in the tool shaft t11 ​​and restricting the movement of the impactor holding member 5.

[0060] like Figure 4a As shown, the impactor retaining member 5 includes a cylinder 51, a stop ring 52 and a pair of movable elongated holes 53, the cylinder 51 is inserted into the tool shaft t11 ​​and is formed with a locking portion 33 (described later), the stop ring 52 protrudes outward from the cylinder 51, and the pair of movable elongated holes 53 are formed in the longitudinal direction of the cylinder 51 and have a roughly elliptical structure to limit the movement of the stop member 6.

[0061] The stopper 6 is provided as a stopper pin shaped like a round rod, and is installed to penetrate an outer diameter portion of the tool shaft t11 ​​corresponding to a portion for connection with the impactor holding member 5 .

[0062] Meanwhile, the holder body 1 refers to a component serving as a housing for holding the medical tool t, and has a structure in which a tool mounting hole 12 is longitudinally formed inside a hollow cylinder 11 for inserting the medical tool.

[0063] The hollow cylinder 11 includes a retainer body 111, an impact reduction device mounting portion 112, and a reducing portion 113. The retainer body 111 is formed in a tubular shape, the impact reduction device mounting portion 112 is formed with an impact reduction device insertion portion 17, which has an inner diameter so that the outer diameter portion of the impact reduction device 8 can be forced to be assembled into the front part of the retainer body, and the reducing portion 113 has a reduced inner diameter to prevent the impact reduction device 8 from being pushed backward even when subjected to external force.

[0064] The tool mounting hole 12 includes a guide member mounting groove 13, a support member mounting groove 14 and a tool mounting groove 15. The guide member mounting groove 13 is formed on the inner circumferential surface of the tool mounting hole 12 to place the tool support guide member 21 thereon. The support member mounting groove 14 is formed to contact the guide member mounting groove 13 to install a retainer connecting member 16 for mounting the retainer support member 4. The tool mounting groove 15 is formed at one end of the tool mounting hole 12 for inserting a medical tool.

[0065] The supporting member mounting groove 14 includes a bolt insertion hole 141 having a bolt head insertion groove and a thread insertion groove for inserting a bolt 161 (described later) and a pin insertion hole 142 recessed adjacent to the bolt insertion hole 141 .

[0066] The holder connecting member 16 includes a bolt 161 inserted into the bolt insertion hole 141 and a stopper pin 162 inserted between the holder support rod 41 and the holder body 1 .

[0067] In addition, the retainer body 1 includes a bolt entry hole 19 and a rod seating groove 18, wherein the bolt entry hole 19 is drilled in the downward direction so as to be coaxial with the bolt insertion hole 141 and allows the bolt 161 to be inserted therein when the bolt 161 is tightened, and the rod seating groove 18 is recessed to seat the lower end of the retainer support rod 41 thereon.

[0068] Meanwhile, the tool support device 2 refers to a component that supports the medical tool inserted into the holder body 1 , and includes a tool support guide member 21 that guides the movement of the tool shaft t11 ​​while supporting the tool shaft t11 ​​.

[0069] The tool support guide member 21 is configured as a sliding support body having an outer peripheral surface coupled to the inner peripheral surface of the guide member mounting groove 13 provided in the tool mounting hole 12 and an inner peripheral surface into which the tool shaft t11 ​​is inserted. The sliding support body may be configured as a bearing, but in this embodiment, the sliding support body is installed as a plurality of sliding bushings (generally referred to as oil-free bushings).

[0070] Meanwhile, the holder supporting member 4 refers to a component having a first end connected to the holder body 1 to perform a function of supporting the holder body 1 and a second end mounted at an arm of a medical robot or the like.

[0071] The holder support member 4 includes a holder support rod 41 shaped like a rod and having a first end connected to the holder body 1 , a connecting plate 42 formed at a second end of the holder support rod 41 , and an arm connecting member 43 connected to the connecting plate 42 .

[0072] The retainer support rod 41 refers to a member formed into a rod shape and formed to be inclined, and the retainer support rod 41 has a lower end which is placed on the rod placement groove 18 of the retainer body 1 and connected by the above-mentioned bolt 161 and the stop pin 162, wherein a fastening hole 412 and a pin insertion hole 413 are formed at positions corresponding to the above-mentioned bolt insertion hole 141 and the pin insertion hole 142.

[0073] The connecting plate 42 can be formed integrally with the retainer support rod 41, but is formed with a bolt fastening hole 422 and a pin insertion hole 423 so as to be fastened by a bolt 44 and a stop pin 45, thereby engaging with the retainer support rod 41 when the bolt 44 and the stop pin 45 are inserted and fastened into the bolt fastening hole 414 and the pin insertion hole 415, and the bolt fastening hole 414 and the pin insertion hole 415 correspond to the bolt fastening hole 422 and the pin insertion hole 423 and are formed in the upper part of the retainer support rod 41.

[0074] The arm connecting member 43 is configured as a clamping member connected to a robot side clamping member (not shown), which is mounted to an opposite robot arm (not shown), wherein the clamping member includes a disc-shaped clamping body 431 formed with a plurality of fastening holes and a clamping protrusion 432 formed with a locking hole 433, and a clamping shaft of the robot side clamping member (not shown) is inserted or connected to the locking hole 433.

[0075] Meanwhile, the tool connection device 3 refers to a component for restricting the medical tool t inserted into the tool installation groove 15, and can be configured without specific restrictions as long as the medical tool can be connected and disconnected therefrom. However, in this embodiment, the tool connection device 3 is characterized in that, despite the concise and simple structure, various medical tools are allowed to be interchangeably mounted to and released from the tool connection device 3.

[0076] like Figure 4aAs shown, the tool connecting device 3 includes a plurality of connecting holes 31, a tool connecting member 32 and a locking portion 33. The plurality of connecting holes 31 are formed around the retainer body 1 so as to be connected to the interior of the tool mounting groove 15. The tool connecting member 32 is inserted through the connecting holes 31. The locking portion 33 is formed in the medical tool t so that the tool connecting member 32 can be inserted therein and locked therein.

[0077] The tool connecting member 32 includes a screw portion 321 fastened to the connecting hole 31 and a locking protrusion 322 formed at an end of the screw portion 321 and inserted into the locking portion 33 .

[0078] The locking portion 33 is formed in the striker holding member 5 , and includes an introduction groove 331 recessed in the inner end portion of the cylindrical body 51 , and a locking groove 332 extending from the introduction groove 331 and bent in a substantially “L” shape.

[0079] Reference Figure 7a and 7b The process of installing the medical tool t using the aforementioned tool connection device 3 is briefly described. Figure 7a of As shown, the locking protrusion 322 of the tool connecting member 32 is aligned with the introduction groove 331. Figure 7a of As shown, the medical tool t1 is pressed to enter the introduction groove 331, as shown in FIG. Figure 7a of <c>As shown, the medical tool t1 is then rotated at an angle of about 30° along the locking groove 332. Thus, the medical tool t1 is inserted into the concave end portion 333 of the locking groove 332 by the elastic force of the elastic pressing unit 7, so that the medical tool t1 can be stably locked without separation.

[0080] Meanwhile, the tool installation groove 15 is provided with an elastic pressurizing unit 7 to apply elastic force to stably lock the medical tool inserted therein.

[0081] The elastic pressing unit 7 includes a compression coil spring 71 that provides elastic force to the medical tool t introduced into the tool installation groove 15 and a pressurizing ring 72 that presses the medical tool by the elastic force applied from the compression coil spring 71 .

[0082] Figure 8a to Figure 8h is a view for illustrating an impact reduction device in a holder for a medical tool according to an embodiment of the present disclosure, wherein Figure 8a It is an exploded perspective view. Figure 8b is a perspective view for showing the internal structure, Figure 8c is a side view, Figure 8d is an enlarged view of the elastic member. Figure 8e is an enlarged view of the anti-separation component, and Figure 8f It is a partial cutaway perspective view. Figure 8g and 8h is a view for illustrating a use state of the impact reduction device, wherein Figure 8g is a partially enlarged view for illustrating a state in which a hammer normally strikes an impact portion of an impactor, and Figure 8h It is a partially enlarged view for illustrating a state in which the hammer misses the striking portion of the impactor.

[0083] Reference Figure 8a to Figure 8h According to an embodiment of the present disclosure, a retainer for a medical tool includes a retainer body 1 and an impact reducing device 8, the retainer body 1 is formed with an impact reducing device insertion portion 17, the impact reducing device insertion portion 17 is formed at the second end of the tool mounting hole 12, and the impact reducing device 8 is installed in the retainer body 1 to absorb and buffer the impact force applied to the retainer body 1 through the impact reducing device insertion portion 17.

[0084] The impact reducing device 8 includes an impact reducing device body 81, an impact absorbing member 82, an anti-separation member 83 and a sealing member 84 to absorb and cushion abnormal impacts even when abnormal impacts are applied to the medical tool, thereby preventing damage to the retainer body 1, the medical tool t, etc. or adverse effects on the operation.

[0085] The impact reduction device body 81 refers to a component installed in the retainer body, and a medical tool such as an impactor t1 is inserted into the impact reduction device body 81. The impact reduction device body 81 serves as a part of the basic frame and is formed with a tool insertion hole 812, and the tool axis t11 of the medical tool is inserted into the tool insertion hole 812.

[0086] The impact reducing device body 81 is shaped substantially in a cylindrical shape, and is formed with a tool insertion hole 812 into which a tool shaft t11 ​​of a medical tool such as an impactor t1 is inserted.

[0087] The tool insertion hole 812 is formed to correspond to the first anti-separation protrusion 8312 and the second anti-separation protrusion 8322 (to be described later) so that the first anti-separation protrusion 8312 and the second anti-separation protrusion 8322 can be inserted therein, but its inner diameter is larger than the outer diameter of the first anti-separation protrusion 8312 and the second anti-separation protrusion 8322 so that a gap d for inserting the sealing member 84 and inserting the elastic member 821 is formed between the tool insertion hole 812 and the first anti-separation protrusion 8312 and the second anti-separation protrusion 8322. For example, the tool insertion hole 812 is formed as a hole approximately in the shape of a triangular prism, which has three hole flat portions 8121 for inserting three leaf springs and three round edge portions 8122 for connecting the hole flat portions 8121.

[0088] Furthermore, the impact reducing device body 81 is formed on the front and rear surfaces thereof with fastening holes 815 that are in contact with the tool insertion hole 812 so as to be coupled with the fastening screws 89 .

[0089] Meanwhile, the shock absorbing member 82 refers to a component placed in the shock reducing device body 81 and absorbing shock applied to the medical tool, and includes an elastic member 821 embedded in the shock reducing device body 81 to absorb shock applied to the tool shaft t11.

[0090] The elastic member 821 can be formed to have various shapes and structures without particular limitation, as long as it can absorb and buffer the tilting impact force transmitted from the tool shaft t11. Considering that the tool shaft t11 ​​in the present embodiment is formed into a round bar shape, the elastic member 821 includes a plurality of leaf springs that are convexly formed to contact the outer surface of the tool shaft i11 and absorb the impact force.

[0091] Preferably, the leaf spring is configured to have a fitting portion 8211 formed at both ends thereof, and a protruding portion 8212 formed between the fitting portions 8211 and protruding convexly toward the center of the tool insertion hole 812, and the protruding portion 8212 can be formed by bending and folding a rectangular plate material. In addition, the leaf spring can be manufactured by selecting any material as long as it has elasticity without specific restrictions. According to this embodiment, the leaf spring is manufactured using a stainless steel thin metal plate excellent in hygiene and durability.

[0092] At the same time, the anti-separation component 83 refers to a component installed in the impact reduction device body 81 to prevent the impact absorbing component 82 from separating, and the anti-separation component 83 includes a first anti-separation flange 831 and a second anti-separation flange 832 connected to the first end and the second end (i.e., the two ends of the impact reduction device body 81).

[0093] The first anti-separation flange 831 includes a first connecting portion 8311 and a first anti-separation protrusion 8312. The first connecting portion 8311 is connected to the first end of the impact reduction device body 81 and is formed with a through hole 8313 connected to the tool insertion hole 812. The first anti-separation protrusion 8312 protrudes from the inner surface of the first connecting portion 8311 and supports the first end of the leaf spring to prevent separation.

[0094] Furthermore, the first connection portion 8311 is formed with a through hole 8313 formed at the center of a body shaped substantially in a disk shape and a plurality of fastening holes 8314 drilled at equal angles for coupling with the impact reducing device body 81 .

[0095] The second anti-separation flange 832 includes a second connecting portion 8321 and a second anti-separation protrusion 8322. The second connecting portion 8321 is connected to the second end of the impact reduction device body 81 and is formed with a through hole 8323 connected to the tool insertion hole 812. The tool insertion hole 812 is formed in the center of the body which is roughly shaped like a disk. The second anti-separation protrusion 8322 protrudes from the inner surface of the second connecting portion 8321 and supports the second end of the leaf spring from separation.

[0096] Similar to the first connection portion 8311 , the second connection portion 8321 has a structure of a through hole 8323 and a plurality of fastening holes 8324 formed in a disc-shaped body.

[0097] The first anti-separation protrusion 8312 and the second anti-separation protrusion 8322 protrude along the periphery of the through holes 8313 and 8323 to provide a gap d, and when the first anti-separation flange 831 and the second anti-separation flange 832 are connected to the impact reduction device body 81, the mating part 8211 is inserted and accommodated in the gap t.

[0098] In particular, the first anti-separation protrusion 8312 and the second anti-separation protrusion 8322 are characterized by including guide flat portions 8315 and 8325 having a flat structure to guide the movement of the mating portion when the leaf spring is compressed and stretched.

[0099] The sealing member 84 refers to a component that maintains the seal of the connection area between the separation preventing member 83 and the impact reducing device body 81 , and is provided as a sealing ring, that is, a so-called O-ring.

[0100] Next, another application example of the holder for medical tools according to the embodiment of the present disclosure will be described, in which a detailed description about components similar to those shown in the aforementioned embodiment is omitted and the description focuses on different components.

[0101] Fig. 9 is a perspective view showing another application example of the holder for a medical tool according to an embodiment of the present disclosure, Fig.10 is a cross-sectional view showing another application example of the holder for a medical tool according to an embodiment of the present disclosure, and Fig.11 is a partially enlarged exploded perspective view of another application example of the holder for a medical tool according to an embodiment of the present disclosure.

[0102] Reference Figures 9 to 11 According to this application example of the present disclosure, the holder for a medical tool includes the medical tool t as described above, a holder body 1, a tool support device 2, a tool connecting device 3, a holder support member 4 and an elastic pressing unit 7, wherein the medical tool t is not the aforementioned impactor t1, but a reamer t2.

[0103] The reamer t2 may be a straight reamer whose appearance is shaped to have a straight structure, but will be described based on an example of a curved reamer (referred to as an offset reamer) in this application example whose appearance is shaped to have a curved structure.

[0104] The bent reamer t2 is generally shaped like a rod and includes a tool shaft t21 having a straight structure to be inserted into the holder body 1, a reamer frame t22 having a hollow column structure to be externally placed and mounted on the tool shaft, a universal joint t23 having a first end connected to the rear end of the tool shaft t21, a second end of the universal joint t23 connected to the offset shaft t24, a cup locking member t25 having a first end connected to the offset shaft t24, and a reamer basket-cup t29 connected to the second end of the cup locking member t25 and performing a cutting operation.

[0105] In addition, the bending reamer t2 is provided with an offset frame t26, which is installed to cover the universal joint t23, the offset shaft t24 and the cup locking member t25, and the bending reamer t2 is rotated by being guided by a first axial support bearing t27 and a second axial support bearing t28. The first axial support bearing t27 is installed between the outer peripheral rear end surface of the tool shaft t21 and the inner peripheral front end surface of the reamer frame t22, and the second axial support bearing t28 is installed between the outer peripheral rear end surface of the tool shaft t21 and the inner peripheral front end surface of the offset frame t26.

[0106] The tool connecting device 3 includes a plurality of connecting holes 31, a tool connecting member 32 and a locking portion 33. The plurality of connecting holes 31 are formed around the retainer body 1 so as to communicate with the interior of the tool mounting groove 15. The tool connecting member 32 is inserted through the connecting holes 31. The locking portion 33 is formed in the medical tool so that the tool connecting member 32 can be inserted therein and locked therein, wherein the locking portion 33 is formed in the reamer frame t22.

[0107] The locking portion 33 is formed at a front end portion of the reamer frame t22 inserted into the tool mounting groove 15 , and includes an introduction groove 331 inserted into an inner end portion of the reamer frame t22 and a locking groove 332 bently extending from the introduction groove 331 .

[0108] like Figure 10 to Figure 1 2, the holder for medical tools according to this application example of the present disclosure does not include the aforementioned impactor holding member 5 and the aforementioned stopper 5, because the reamer configured as the medical tool t requires only a rotation operation and does not require an advancing and retreating operation.

[0109] In addition, the reamer is not subjected to impact force during the surgical procedure and therefore does not necessarily require the impact reduction device 8. However, it is preferred that the impact reduction device 8 is installed in the holder body 1 because the reamer can absorb unexpected impact force applied from the outside and elastically supports the tool shaft t21 in front of the holder body 1.

[0110] Next, the operation of the holder for a medical tool according to the embodiment of the present disclosure will be briefly described.

[0111] The process of performing artificial hip joint surgery using the aforementioned retainer for medical tools according to the present disclosure is usually performed by pre-processing the acetabulum of the hip joint by cutting with a reamer, inserting the artificial acetabulum cup Cc, pressing and fixing the pre-processed acetabulum with an impactor, and then connecting the artificial femoral head.

[0112] To this end, first, the holder supporting member 4 of the holder main body 1 is coupled to an arm (not shown) of an artificial joint surgical robot, and the curved reamer t2 is mounted as a medical tool.

[0113] Reference Fig.11 The bending reamer t2 is installed in a manner that the tool shaft t21 is inserted into the tool mounting hole 12 and is fastened using the tool connecting device 3. Figure 7a Similar to the method of installing the impactor t1 described, the bending reamer t2 is also installed in a manner that the locking protrusion 322 of the tool connecting member 32 is aligned with the introduction groove 331, and the medical tool t2 is pressed to enter the introduction groove 331, and then rotated counterclockwise along the locking groove 332 at an angle of approximately 30°, so that the medical tool t2 can be inserted into the recessed end portion 333 of the locking groove 332 by the elastic force of the elastic pressing unit 7, and is thus stably locked without separation.

[0114] When the bending reamer t2 is completely installed in this manner, the front portion of the tool shaft t21 is rotatably elastically supported by the impact absorbing member 82 of the impact reducing device 8, the substantially central portion of the tool shaft t21 is rotatably supported by the tool support guide member 21, and the rear end portion of the tool shaft t21 is rotatably supported by the first shaft support bearing t27 and the second shaft support bearing t28. Therefore, when the rotational power of the drive motor (not shown) or the rotational power of the manual operation is transmitted to the tool shaft t21, the tool shaft t21 smoothly performs the rotation operation.

[0115] In this way, the rotational power transmitted to the tool shaft t21 is transmitted to the offset shaft t24 and the cup locking member t25 via the universal joint t23, so the reamer basket cup t29 cuts the acetabulum of the hip joint while rotating.

[0116] When the preprocessing such as cutting is completed, the bending reamer t2 is separated in the reverse order of the installation operation. In other words, when the bending reamer t2 is pushed inward so that the locking protrusion 322 can come out of the concave end 333 and then rotated clockwise about 30° along the locking groove 332, the locking protrusion 322 is separated and removed outward along the introduction groove 331 by the elastic force of the elastic pressing unit 7.

[0117] Meanwhile, after the curved reamer t2 is separated as described above, an impactor t1 such as a curved impactor is mounted on the holder body 1, thereby completing the operation by pressing and fitting the artificial acetabular cup c and connecting the artificial femoral head.

[0118] The impactor t1 is installed in such a way that the tool shaft t11 ​​is inserted into the tool mounting hole 12 and is fastened using the tool connecting device 3. Figure 7a of As shown, the locking protrusion 322 of the tool connecting member 32 is aligned with the introduction groove 331. Figure 7a of As shown, the medical tool t1 is pressed to enter the introduction groove 331, as shown in FIG. Figure 7a of <c>As shown, the medical tool t1 is then rotated at an angle of about 30° along the locking groove 332. Thus, the medical tool t1 is inserted into the concave end portion 333 of the locking groove 332 by the elastic force of the elastic pressing unit 7, so that the medical tool t1 can be stably locked without separation.

[0119] When the impactor t1 is mounted in this manner, the front portion of the tool shaft t11 ​​is movably and elastically supported by the impact absorbing member 82 of the impact reducing device 8 , and the rear portion of the tool shaft t21 is movably supported by the tool support guide member 11 .

[0120] At the same time, when the impactor t1 is Figure 1 When fully installed as shown and struck by a hammer (not shown), the tool shaft t1 can be Figure 7b The process of advancing "d" as shown is performed to press and fit the artificial acetabular cup into the acetabulum of the hip joint.

[0121] The surgical procedure of impacting the impactor t1 can be performed by the user by using Figure 8g The hammer shown in FIG. 1 is used to apply an impact force to the impact portion t13. When the impact direction of the hammer is aligned with the longitudinal direction (i.e., the axial direction) of the impactor, the surgical operation is stably performed. Figure 8h As shown, when the striking direction of the hammer is misaligned with the axial direction of the impactor to apply an impact force to the impactor in an inclined direction (i.e., the wrong direction), the retainer body 1 and the impactor t1 may be deformed, damaged, and broken. In this case, the impact reduction device 8 installed in the retainer body 1 is used to absorb the impact, thereby solving the above problem.

[0122] In addition, the above-mentioned impact absorbing function of the impact reducing device 8 is performed in such a manner that, since the tool shaft t11 ​​is inserted into the tool insertion hole 812, as shown in FIG. Figure 8h As shown, the accidental strike of the hammer applies a displacement force to the tool shaft t11 ​​in an oblique direction, and at the same time the protruding portion 8212 becomes slightly flat to absorb and buffer the impact force, while the outer peripheral surface of the tool shaft t11 ​​applies a displacement force to the elastic member 821 .

[0123] The terms "including", "configuration" and / or "having" specify the presence of the components, unless there is an obviously different meaning in the present disclosure, but do not exclude the presence thereof, and should be interpreted as further including other components. Unless otherwise defined, all terms including technical or scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. General terms defined in dictionaries should be interpreted as having a consistent meaning in the context of the relevant art, and will not be interpreted as having an idealized or overly formal meaning unless clearly defined in the present disclosure.

[0124] Although the configuration and operation of the holder for medical tools according to the embodiments of the present disclosure have been described so far, those skilled in the art will understand that modifications or substitutions may be made in all or part of the embodiments of the present disclosure without departing from the technical spirit of the present disclosure.

[0125] Therefore, it should be understood that the scope of the present disclosure falls within the appended claims and their equivalents. Industrial Applicability

[0126] The present invention relates to a holder for medical tools, which has a concise and simple structure, satisfies operational stability and durability, and can be used interchangeably. The holder for medical tools can be installed with an impactor, a reamer, etc. for surgical operations, but can also be used for various medical tools other than medical tools for surgical operations.< / c> < / c>

Claims

1. A holder for a medical tool, comprising: Medical tools, including tool shafts; A holder body having a tool mounting hole formed therein for inserting the medical tool into the tool mounting hole; as well as a tool supporting device for supporting the medical tool inserted into the holder body, The tool support device includes a tool support guide member to guide the movement of the tool shaft while supporting the tool shaft.

2. The retainer according to claim 1, wherein: The tool support guide member includes a sliding support body having an outer peripheral surface coupled with an inner peripheral surface of the tool mounting hole and an inner peripheral surface into which the tool shaft is inserted. 3 . The holder of claim 1 , further comprising a holder support member coupled to the holder body.

4. The holder according to claim 3, wherein: The tool mounting hole comprises: a guide member mounting groove formed on an inner peripheral surface of the tool mounting hole to seat the tool supporting guide member thereon; a support member mounting groove formed to contact the guide member mounting groove to mount a holder connecting member for mounting the holder support member; and A tool mounting groove is formed at one end of the tool mounting hole and is used for mounting the medical tool.

5. The holder according to claim 4, wherein: The holder support member includes a holder support rod, a connecting plate, and an arm connecting member, wherein the holder support rod is formed into a rod shape and has a first end coupled to the holder body, the connecting plate is formed at a second end of the holder support rod, and the arm connecting member is connected to the connecting plate. The support member installation groove includes a bolt insertion hole, and the bolt insertion hole includes a bolt head insertion groove and a thread insertion groove, and The holder connecting member includes a bolt inserted into the bolt insertion hole and a stopper pin inserted between the holder supporting rod and the holder body.

6. The holder according to claim 4, wherein: The tool installation slot includes an elastic pressurizing unit to apply elastic force to the medical tool inserted therein.

7. The holder according to claim 4, further comprising: an impact reduction device installed in the retainer body to absorb and buffer an impact force applied to the retainer body, and An impact reducing device insertion portion is formed in the second end portion of the tool mounting hole to mount the impact reducing device.

8. The holder according to claim 7, wherein: The impact reduction device comprises: an impact reduction device body, formed with a tool insertion hole, into which a tool shaft of the medical tool is inserted; a shock absorbing member placed in the shock reducing device body and absorbing shock applied to the medical tool; and An anti-separation member is installed in the impact reducing device body to prevent separation of the impact absorbing member.

9. The holder according to any one of claims 4 to 8, further comprising a tool connection device configured to constrain the medical tool inserted into the tool mounting slot.

10. The holder according to claim 9, wherein: The tool connection device comprises: a connecting hole formed to penetrate the holder body to communicate with the interior of the tool mounting groove; a tool connection member inserted through the connection hole; and A locking portion is formed in the medical tool so that the tool connecting member can be inserted therein and locked thereto.

11. The holder according to claim 10, wherein: The medical tool comprises a straight impactor or a curved impactor, which includes the tool shaft and is used for hip joint surgery, and The impactor is provided with an impactor holding member and a stopper, wherein the impactor holding member is connected to the tool mounting groove to movably support the straight impactor or the curved impactor, into which the tool shaft is movably inserted, and the impactor holding member is formed with a locking portion, and the stopper restricts the movement of the tool shaft.

12. The holder according to claim 11, wherein: The stopper is configured as a stopper pin formed in the tool shaft, the stopper pin corresponding to a portion for connection with the impactor holding member, The impactor holding member includes a cylindrical body, the cylindrical body being inserted into the tool shaft and formed with the locking portion, and a moving elongated hole being formed in a longitudinal direction of the cylindrical body and restricting movement of the stopper pin, and The locking portion includes an introduction groove recessed in an inner end portion of the cylindrical body and a locking groove curvedly extending from the introduction groove.

13. The holder according to claim 10, wherein: The medical tool is provided with the tool shaft and includes a straight reamer or a curved reamer used in hip joint surgery, The straight reamer or the curved reamer comprises a reamer frame having a hollow column structure to be placed and mounted on the tool shaft from the outside, and The reamer frame includes the locking portion, which is formed in a portion to be inserted into the tool mounting groove, and includes an introduction groove and a locking groove, the introduction groove is recessed in an inner end portion of the reamer frame, and the locking groove extends curvedly from the introduction groove.

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