KR101633447B1 - Medical device for holding a wire pin - Google Patents

Medical device for holding a wire pin Download PDF

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Publication number
KR101633447B1
KR101633447B1 KR1020140117742A KR20140117742A KR101633447B1 KR 101633447 B1 KR101633447 B1 KR 101633447B1 KR 1020140117742 A KR1020140117742 A KR 1020140117742A KR 20140117742 A KR20140117742 A KR 20140117742A KR 101633447 B1 KR101633447 B1 KR 101633447B1
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KR
South Korea
Prior art keywords
case
cylinder
hole
wire pin
wall
Prior art date
Application number
KR1020140117742A
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Korean (ko)
Other versions
KR20160028779A (en
Inventor
주돈수
Original Assignee
아이메디컴(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to KR1020140117742A priority Critical patent/KR101633447B1/en
Priority to PCT/KR2015/005655 priority patent/WO2016035981A1/en
Publication of KR20160028779A publication Critical patent/KR20160028779A/en
Application granted granted Critical
Publication of KR101633447B1 publication Critical patent/KR101633447B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Neurology (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Otolaryngology (AREA)
  • Surgical Instruments (AREA)
  • Ophthalmology & Optometry (AREA)
  • Pathology (AREA)
  • Neurosurgery (AREA)

Abstract

The present invention relates to a medical instrument for holding a wire pin. More particularly, to a medical instrument used to hold a wire pin in a procedure for inserting a long metal wire pin interconnecting broken bones.
A medical instrument for holding a wire pin according to an embodiment of the present invention includes a body having a first through hole, a cylinder mounted on a first through hole of the body, a cylinder mounted on the body, A center case mounted on a second through hole of the cylinder and moved in conjunction with the cylinder and having a third through hole, a front end portion of the center case being in contact with an inner wall of the third through hole of the center case, And an elastic member elastically supporting the cylinder with respect to an inner wall of the first through-hole of the body, wherein the elastic member is provided with a through- The cylinder and the center case are moved forward so that one end of the insertion case is contracted while holding the wire pin, By the rotation of the cylinder and the center of the case toward the one end of the wire pin it is held and returned to the original state of the inserted case is released while moving to the rear.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical device for holding a wire pin,

The present invention relates to a medical instrument for holding a wire pin. More particularly, to a medical instrument used to hold a wire pin in a procedure for inserting a long metal wire pin interconnecting broken bones.

A wide variety of surgical instruments have been used during surgical operations to insert wire pins to interconnect broken bones.

7, after a known Jacobs chuck 200a is connected to the power tool 300a, the wire pin P is inserted into a through hole (not shown) of the Jacobs chuck 200a After the insertion, the wire pin P is pulled out by a predetermined length. Then, the tightening part 201a is tightened to insert the wire into the bone. Then, the part of the wire pin P is pulled back to the bone, (P) is pulled out by a predetermined length, and then the tightening portion 201a is joined again and then the procedure is performed.

Therefore, it is necessary to repeat the operation of loosening and tightening the tightening portion 201a of the Jacobs chuck 200a each time the wire pin insertion operation is performed. This inconvenience is inconvenient, and the operation time is delayed and troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a medical instrument for holding a wire pin which can easily insert or release a wire pin during surgery.

In addition, the present invention includes other objects which are not explicitly described, but can be derived from the constitution of the present invention.

In order to achieve the above object, a medical instrument for holding a wire pin according to an embodiment of the present invention includes a body having a first through hole, a cylinder mounted on a first through hole of the body, A center case which is mounted on a second through hole of the cylinder and moves in conjunction with the cylinder and has a third through hole, a front end portion of which is connected to a third through hole of the center case And an elastic member for elastically supporting the cylinder with respect to an inner wall of the first through hole of the body, wherein the elastic member comprises a first through hole which is in contact with the inner wall of the hole and has a fifth through hole penetrated in the longitudinal direction thereof, The cylinder and the center case are moved forward by the rotation of the lever in one direction, and one end of the insertion case is contracted while the wire pin And the cylinder and the center case are moved backward by the rotation of the lever in the opposite direction, so that the holding of the wire pin is released while one end of the insertion case returns to the circular state.

A first bearing is interposed between the cylinder and the center case, and one end of the elastic member is supported by the first bearing and the other end is supported by the inner wall of the first through hole of the body.

Further, at the front end portion of the insertion case, at least one slit is formed in the longitudinal direction so that it is contracted when the force is applied in the center direction and is returned to the original state when the force is released.

The insertion case has a plurality of balls mounted on a surface of one end thereof, and the plurality of balls contact the inner wall of the center case.

A second bearing is interposed between the inner wall of the body and the outer wall of the insertion case.

In addition, a cone-shaped extension portion having an inner diameter gradually expanded is formed at the tip end portion of the center case, and the plurality of balls contact the extension portion.

Further, a rotary power tool is connected to a rear end portion of the insertion case, and the insertion case and the center case can rotate relative to the cylinder.

Further, the wire pin is inserted through the first through third through holes.

In addition, a groove is formed in the outer wall of the insertion case, a groove is formed in the inner wall of the central case, and a part of the joint pin is inserted into the groove of the insertion case and the groove of the center case, respectively.

According to the present invention, the insertion or release of the wire pin can be simplified in a surgical operation.

Further, the effects of the present invention are not limited to these, and include other effects derived from the detailed description of the present invention described later.

1 is a perspective view of a medical instrument for holding a wire pin according to an embodiment of the present invention.
Fig. 2 is an exploded view of the medical instrument for holding a wire pin of Fig. 1;
3 is a sectional view of the main configuration of the medical instrument for holding a wire pin of Fig.
4 is a cross-sectional view of the main structure of the medical instrument for holding a wire pin shown in Fig. 1, viewed from another direction.
Fig. 5 shows an operating state of the medical instrument for holding a wire pin shown in Fig. 1. Fig.
Fig. 6 shows a coupling relationship between the medical instrument for holding a wire pin and the rotary power tool shown in Fig. 1;
7 is a diagram related to the prior art.

Hereinafter, a medical instrument for holding a wire pin according to an embodiment of the present invention will be described with reference to the drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

As shown in Figs. 1 to 4, the medical instrument for wire pin holding according to the present invention includes a body 9a, a cylinder 3a, a lever 8a, a center case 4a, 5a, and an elastic member 2a.

The body 9a is formed in a tubular shape and has a first through hole 91a formed to penetrate the body 9a in the longitudinal direction. The body 9a may be formed as one body or may be formed by coupling a cover 93a to the basic body 92a. The portion 911a on the outlet side 941a of the first through hole 91a may be formed to have a size enough to allow the wire pin to pass therethrough.

The cylinder (3a) has a second through hole (31a) penetrating in the longitudinal direction thereof. Further, a slot 32a penetrating in the up and down direction is formed so that the upper portion 81a of the lever 8a can be positioned. The cylinder 3a is movably mounted in the first through hole 91a of the body 9a.

The lever 8a is rotatably mounted on the body 9a around a pin 95a mounted on the body 9a so that the cylinder 3a is moved in the forward and backward directions Can be relatively moved.

The center case 4a is mounted in the second through hole 31a of the cylinder 3a and moves in conjunction with the movement of the cylinder 3a and has a third through hole 41a in the longitudinal direction thereof . In order to interlock the center case 4a with the cylinder 3a, as shown in Fig. 3, a snap ring 42a is fixed to surround the outer wall at the rear of the center case 4a, for example And a latching protrusion 43a is formed at the front, and the cylinder 3a can be disposed therebetween. In this case, the first bearing 10a may be disposed in the front compartment 33a after the cylinder 3a is divided into the front and rear compartments, so that the first bearing 10a may be supported by the engagement protrusion 43a have. Here, the first bearing 10a is interposed between the cylinder 3a and the center case 4a. A cone-shaped extension portion 44a having an inner diameter gradually expanded is formed at the tip end portion of the center case 4a. A plurality of balls 52a, which will be described later, are in contact with the extended portion 44a.

The front end portion of the insert case 5a contacts the inner wall of the third through hole 41a through the ball 52a described later at the front end portion of the center case 4a, And extends in the rearward direction. The plurality of balls 52a are rotatably mounted on the outer surface of the front end portion of the insertion case 5a at predetermined intervals in the circumferential direction, Through hole 41a.

It is preferable that a second bearing 11a is provided between the outer wall of the insertion case 5a and the inner wall of the first through hole 91a of the body 9a at the rear end portion of the body 9a.

The insertion case 5a is provided with a fifth through hole 51a penetrating in the longitudinal direction thereof and one or more slits 55a are longitudinally formed at the tip portion thereof so that when the force is applied in the center direction (Here, 'shrink' means that the tip portion of the fifth through-hole formed in the tip portion is reduced in diameter so as to be smaller), and when the force is released, it returns to the original position.

A groove 54a is formed in the outer case of the insertion case 5a and a groove (not shown) is formed in the inner wall of the center case 4a to correspond to the groove 54a of the insertion case 5a. And a part of the joint pin 53a is inserted so as to extend over the groove of the center case 4a. So that the central case 4a also rotates together when the insertion case 5a rotates. The groove formed on the inner wall of the central case 4a is longer than the joint pin 53a so that the center case 4a can move in the longitudinal direction with respect to the insertion case 5a.

The elastic member 2a elastically supports the cylinder 3a with respect to the inner wall of the first through hole 91a of the body 9a, for example. Specifically, one end of the elastic member 2a can be supported by the first bearing 10a, and the other end can be supported by the inner wall of the first through hole 91a of the body 9a.

Hereinafter, the operation of the medical instrument for holding a wire pin according to an embodiment of the present invention will be described with reference to FIGS. 3 to 5. FIG.

5A shows a state in which a force is applied to the lever 8a in the direction A (open state), and FIG. 5B shows a state in which a force is applied to the lever 8a in the direction B (closed state).

As shown in FIG. 5, when the lever 8a is pulled backward (in the direction B), the lever 8a is rotated about the pin 95a. At this time, the upper portion 81a of the lever 8a pushes the cylinder 3a forward (leftward in FIG. 5), and the first bearing 10a pushes the center 3a of the center case 4a As shown in FIG. Whereby the center case 4a is moved forward relative to the insertion case 5a. By this movement, the inner diameter of the extended portion 44a of the distal end portion of the center case 4a, which is in contact with the ball 52a, is gradually reduced. Therefore, the center case 4a pushes the ball 52a mounted on one end of the insertion case 5a inward in the radial direction, and one end of the center case 4a is contracted. The wire pin P inserted into the fifth through hole 51a of the insertion case 5a is finally fixed to the tip end portion of the insertion case 5a.

On the other hand, when releasing the force applied to the lever 8a, the cylinder 3a is moved backward by the repulsive force of the elastic member 2a, and the center case 4a moves backward, The front end portion of the insertion case 5a is opened again as the force applied to the insertion portion 52a is released. Therefore, the fixing of the wire pin P inserted into the fifth through hole 51a of the insertion case 5a is also released.

6, the medical instrument for holding a wire pin is connected to a rotary power tool 100a at the other end of the insertion case 5a, and is inserted by a rotational force generated by the rotary power tool 100a, The case 5a and the center case 4a can rotate relative to the cylinder 3a in the body 9a.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

2a. Elastic member
3a. cylinder
31a. The second through-
32a. Slot 32a. Front compartment
4a. Central case
42a. Snap ring 43a. Jaw
44a. Expansion portion
5a. Insert case
52a. A plurality of balls 54a. home
9a. Body
91a. First through hole, 92a. Basic body
93a. Cover 941a. The outlet side of the first through hole 91a
8a. lever
81a. Top of lever
10a. The first bearing

Claims (9)

A medical instrument for holding a wire pin,
A body having a first through hole,
A cylinder mounted on the first through hole of the body,
A lever capable of moving the cylinder relative to the body,
A central case mounted on a second through hole of the cylinder and moved in conjunction with the cylinder and having a third through hole,
An insertion case having a front end portion contacting the inner wall of the third through hole of the central case and a fifth through hole penetrating in the longitudinal direction thereof,
An elastic member for elastically supporting the cylinder with respect to an inner wall of the first through hole of the body;
/ RTI >
The cylinder and the center case are moved forward by the rotation of the lever in one direction, and at this time, one end of the insertion case is contracted while holding the wire pin, and by rotation of the lever in the opposite direction, The center case moves backward and one end of the insertion case returns to a circular state, and the holding of the wire pin is released
Medical instrument for wire pin holding. The method of claim 1,
Wherein a first bearing is interposed between the cylinder and the center case, and the elastic member is supported at one end thereof by the first bearing and the other end by an inner wall of the first through hole of the body. The method of claim 1,
Wherein at least one slit is formed in the front end portion of the insertion case in the longitudinal direction so as to contract when a force is applied in the center direction and return to the original position when the force is released. 4. The method of claim 3,
Wherein the insertion case has a plurality of balls mounted on a surface of one end thereof and the plurality of balls contact the inner wall of the center case. 3. The method of claim 2,
And a second bearing is interposed between the inner wall of the body and the outer wall of the insertion case. 5. The method of claim 4,
Wherein a cone-shaped extension portion having an inner diameter gradually expanded is formed at a distal end portion of the central case, and the plurality of balls contact the extension portion. The method of claim 1,
Wherein a rotary power tool is connected to a rear end portion of the insertion case, and the insertion case and the center case are rotatable relative to the cylinder. The method of claim 1,
And the wire pin is inserted through the first through third through holes. The method of claim 1,
Wherein a groove is formed in an outer wall of the insertion case, a groove is formed in an inner wall of the central case, and a part of the joint pin is inserted into the groove of the insertion case and the groove of the center case, Instrument.
KR1020140117742A 2014-09-04 2014-09-04 Medical device for holding a wire pin KR101633447B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140117742A KR101633447B1 (en) 2014-09-04 2014-09-04 Medical device for holding a wire pin
PCT/KR2015/005655 WO2016035981A1 (en) 2014-09-04 2015-06-05 Medical device for holding wire pin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140117742A KR101633447B1 (en) 2014-09-04 2014-09-04 Medical device for holding a wire pin

Publications (2)

Publication Number Publication Date
KR20160028779A KR20160028779A (en) 2016-03-14
KR101633447B1 true KR101633447B1 (en) 2016-06-24

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Application Number Title Priority Date Filing Date
KR1020140117742A KR101633447B1 (en) 2014-09-04 2014-09-04 Medical device for holding a wire pin

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KR (1) KR101633447B1 (en)
WO (1) WO2016035981A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102357527B1 (en) * 2020-03-03 2022-02-03 가톨릭대학교 산학협력단 femoral headless nephrotectomy apparatus
KR20240045552A (en) * 2022-09-30 2024-04-08 아이메디컴(주) Separation device of an acetabular cup for an artificial hip joint

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091880A (en) * 1975-10-17 1978-05-30 Concept Inc. Surgical wire inserter apparatus
US4383527A (en) * 1981-02-20 1983-05-17 Howmedica, Inc. Device for guiding the insertion of surgical wires into bone tissue
US5180388A (en) * 1990-06-28 1993-01-19 American Cyanamid Company Bone pinning system
US5601550A (en) * 1994-10-25 1997-02-11 Esser; Rene D. Pelvic pin guide system for insertion of pins into iliac bone
US6533454B1 (en) * 1999-09-30 2003-03-18 Bionx Implants Oy Surgical system for tissue fixation
US7686139B2 (en) * 2006-07-27 2010-03-30 Mitsubishi Electric Corporation Elevator device

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WO2016035981A1 (en) 2016-03-10
KR20160028779A (en) 2016-03-14

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