CN111493997A - Guider for assisting insertion of kirschner wire in PFN (pulse frequency modulation) operation - Google Patents
Guider for assisting insertion of kirschner wire in PFN (pulse frequency modulation) operation Download PDFInfo
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- CN111493997A CN111493997A CN202010338647.0A CN202010338647A CN111493997A CN 111493997 A CN111493997 A CN 111493997A CN 202010338647 A CN202010338647 A CN 202010338647A CN 111493997 A CN111493997 A CN 111493997A
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- kirschner wire
- positioning
- catheter
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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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
- A61B17/74—Devices for the head or neck or trochanter of the femur
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Surgical Instruments (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
A guider for assisting the insertion of a kirschner wire in PFN operation comprises a handle, a catheter, a fixing piece and a positioning piece; one end of the handle is connected with the upper end of the catheter; a needle threading channel for the Kirschner wire to pass through is arranged in the catheter, and openings are formed at the upper end and the lower end of the needle threading channel; the lower end of the guide pipe is provided with a threaded pipe; a spring is sleeved on the periphery of the threaded pipe; the middle part of the fixing piece is provided with a first through hole; the inner periphery of the first through hole of the fixing piece is provided with a limiting step; one end of the spring is propped against the limiting step, and the other end of the spring is propped against the lower end face of the guide pipe; the end surface of the bottom of the fixed part is provided with a positioning groove; the first through hole through which the threaded pipe passes is in threaded connection with the positioning piece; one end of the positioning piece facing the fixing piece is provided with a limiting bulge which is inserted into the positioning groove in a matched manner; the shape of the lower surface of the positioning piece is arranged corresponding to the shape of the upper end surface of the femoral head, so that the positioning piece is placed on the femoral head to form a positioning structure. The invention ensures that the insertion point of the Kirschner wire and the whole insertion process are stable and accurate.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a guider for assisting in inserting a kirschner wire in a PFN operation.
Background
The kirschner wire is required to be driven into the center of the femoral tuberosity from the outer side of the skin during PFN operation, the kirschner wire is required to be positioned at the center of the whole femur, but the kirschner wire cannot be smoothly arranged into the femoral medullary cavity from the center point of the top of the femoral tuberosity because a large amount of soft tissues which cannot be removed, such as muscles, exist on the upper part of the femur (particularly difficult for obese patients), and the kirschner wire is required to be adjusted after entering at a certain angle, so that the problem that the kirschner wire is carelessly and obliquely driven out of the femoral medullary cavity or is finally.
Meanwhile, in the prior art, a doctor can only avoid upper soft tissues at a certain angle, generally judges the Kirschner wire by hand feeling to contact cortical bone, continuously adjusts the Kirschner wire with the aid of a C-arm machine, and finally successfully inserts the Kirschner wire. Doctors with different sclerotins of everyone are easy to make mistakes by themselves, and obese patients are particularly difficult; the C-arm machine is used for judging for many times, so that the radiation quantity of a patient and a doctor is increased; the continuous adjustment increases the operation time.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a guider for assisting in inserting a kirschner wire in a PFN operation, which ensures the inserting point of the kirschner wire and the whole inserting process to be stable and accurate.
(II) technical scheme
In order to solve the problems, the invention provides a guider for assisting the insertion of a kirschner wire in a PFN operation, which comprises a handle, a catheter, a fixing piece and a positioning piece, wherein the handle is connected with the catheter through a connecting piece;
one end of the handle is connected with the upper end of the catheter; a needle threading channel for the Kirschner wire to pass through is arranged in the catheter, and openings are formed at the upper end and the lower end of the needle threading channel; the lower end of the guide pipe is provided with a threaded pipe; a spring is sleeved on the periphery of the threaded pipe;
the middle part of the fixing piece is provided with a first through hole; the inner periphery of the first through hole of the fixing piece is provided with a limiting step; one end of the spring is propped against the limiting step, and the other end of the spring is propped against the lower end face of the guide pipe; the end surface of the bottom of the fixed part is provided with a positioning groove;
the first through hole through which the threaded pipe passes is in threaded connection with the positioning piece; one end of the positioning piece facing the fixing piece is provided with a limiting bulge which is inserted into the positioning groove in a matched manner;
a second through hole for the Kirschner wire to pass through is formed in the middle of the positioning piece;
the needle threading channel, the first through hole and the second through hole are correspondingly communicated;
the shape of the lower surface of the positioning piece is arranged corresponding to the shape of the upper end surface of the femoral head, so that the positioning piece is placed on the femoral head to form a positioning structure.
Preferably, the angle between the handle and the catheter is 80-100 degrees.
Preferably, the positioning member is manufactured by a 3D printing technique.
Preferably, the handle, the catheter and the fixing piece are all made of medical stainless steel materials.
In the invention, the handle is used for holding and stabilizing the position of a doctor in the operation process; the catheter is used for bending and guiding the Kirschner wire. The inside of the catheter is provided with a needle threading channel for the kirschner wire to pass through, and the needle threading channel is the key point that the kirschner wire can be successfully placed into the femur under the condition of avoiding soft tissues. The fixing piece is used for positioning the position of the positioning piece and is made of medical stainless steel. The positioning piece is used for being positioned on the femoral head, and the correct driving position of the Kirschner wire is ensured. Because the growth vigor of the thighbone of each patient is different, the positioning piece needs to be designed according to the customization of the patient. The positioning piece is used as the main part of the fixing nail path, so that the placing point of the Kirschner wire and the stability and the accuracy of the whole placing process are ensured.
In the invention, the catheter and the needle threading channel are arc-shaped, the positioning piece is provided with an attaching structure along the bone surface characteristics in the femoral tuberosity, and the catheter and the needle threading channel are combined to form a guide template; during operation, a doctor can firstly attach the positioning piece to the surface of the femoral head to stabilize the femoral head, holds the handle, enables the Kirschner wire to enter along a bent angle, and finally puts the femoral head into the femoral head, so that the soft tissues such as muscle and skin above the femoral head are avoided at a certain angle, and the Kirschner wire can be bent and put into the femoral head by utilizing the toughness of the Kirschner wire in the putting process. The doctor lays the baffle in the operation and directly puts into ke shi needle after, reduces the observation number of times of C arm machine, shortens the time of operation, and it is accurate to put the nail, gets rid of the emergence of direction ke shi needle and punctures the emergence of the scheduling problem of beating partially.
Drawings
Fig. 1 is a schematic structural view of a guide for assisting insertion of a kirschner wire in PFN surgery according to the present invention.
Fig. 2 is a partial structural schematic view of the guide for assisting the insertion of the kirschner wire in the PFN operation according to the present invention.
Fig. 3 is a schematic view of a connection structure of a fixing member and a positioning member in a guide for assisting insertion of a kirschner wire in PFN surgery according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-3, the guide device for assisting in inserting the kirschner wire in the PFN operation, provided by the invention, comprises a handle 1, a catheter 2, a fixing member 3 and a positioning member 4;
one end of the handle 1 is connected with the upper end of the catheter 2; a needle threading channel for a Kirschner wire to pass through is arranged in the catheter 2, and openings are formed in the upper end and the lower end of the needle threading channel of the catheter 2; the lower end of the guide pipe 2 is provided with a threaded pipe 22; a spring 32 is sleeved on the periphery of the threaded pipe 22;
the middle part of the fixed part 3 is provided with a first through hole; the inner periphery of the first through hole of the fixing piece 3 is provided with a limiting step; one end of the spring 32 is propped against the limiting step, and the other end is propped against the lower end face of the guide pipe 2; the end surface of the bottom of the fixing piece 3 is provided with a positioning groove 33;
the first through hole through which the threaded pipe 22 passes is in threaded connection with the positioning piece 4; one end of the positioning piece 4 facing the fixing piece 3 is provided with a limiting bulge 41 which is inserted into the positioning groove 33 in a matching way;
a second through hole for the Kirschner wire to pass through is formed in the middle of the positioning piece 4;
the needle threading channel, the first through hole and the second through hole are correspondingly communicated;
the shape of the lower surface of the positioning member 4 is arranged to correspond to the shape of the upper end of the femoral head so that the positioning member 4 is placed on the femoral head to form a positioning structure.
In operation, firstly, the positioning piece 4 is placed on the femoral head to form a positioning structure; then, the spring 32 is in a compressed state at the initial state, the fixing member 3 is rotated, and the fixing member 3 moves along a position gradually far away from the positioning member 4; when the positioning groove 33 rotates to the position of the limiting protrusion 41, the spring 32 pushes the fixing member 3 to move towards the positioning member 4, so that the limiting protrusion 41 is inserted into the positioning groove 33 in a matching manner to form a limiting mechanism, and the positioning and the fixing of the device are completed.
In the invention, the handle 1 is used for holding and stabilizing the position of a doctor in the operation process; the catheter 2 is used for kirschner wire bending guidance. The catheter 2 is internally provided with a needle threading channel for the kirschner wire to pass through, and the needle threading channel is the key point that the kirschner wire can be successfully placed into the femur under the condition of avoiding soft tissues. The fixing piece 3 is used for positioning the positioning piece 4 and is made of medical stainless steel. The positioning piece 4 is used for being positioned on the femoral head, and the correct driving position of the Kirschner wire is ensured. The positioning member 4 needs to be custom designed according to the patient because the femur growth vigor of each patient is different. The positioning piece 4 is used as the main part of the fixing nail path, so that the placing point of the Kirschner wire and the stability and the accuracy of the whole placing process are ensured.
In an alternative embodiment, the catheter 2 and the inner needle passage are curved.
In the invention, the catheter 2 and the needle threading channel are arc-shaped, the positioning piece 4 is designed into an attaching structure along the bone surface characteristics in the femoral tuberosity, and the catheter 2 and the needle threading channel are combined to form a guide template;
during operation, a doctor can firstly attach the positioning piece 4 to the surface of the femoral head to stabilize the femoral head, holds the handle 1, enables the Kirschner wire to enter along a bent angle, and finally puts the femoral head into the femoral head, so that the soft tissues such as muscle and skin above the femoral head are avoided at a certain angle, and the Kirschner wire can be bent and put into the femoral head by utilizing the toughness of the Kirschner wire in the putting process. The doctor lays the baffle in the operation and directly puts into ke shi needle after, reduces the observation number of times of C arm machine, shortens the time of operation, and it is accurate to put the nail, gets rid of the emergence of direction ke shi needle and punctures the emergence of the scheduling problem of beating partially.
In an alternative embodiment, the angle between the handle 1 and the catheter 2 is 80-100 degrees for easy manipulation by the physician.
In an alternative embodiment, the positioning member 4 is manufactured by a 3D printing technology, and the manufacturing is convenient.
In an alternative embodiment, the handle 1, the catheter 2 and the fixing piece 3 are all made of medical stainless steel materials, and the use is safe and sanitary.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (4)
1. A guider for assisting in inserting a kirschner wire in a PFN operation is characterized by comprising a handle (1), a catheter (2), a fixing piece (3) and a positioning piece (4);
one end of the handle (1) is connected with the upper end of the catheter (2); a needle threading channel for a Kirschner wire to pass through is arranged in the catheter (2), and openings are formed in the upper end and the lower end of the catheter (2) by the needle threading channel; the lower end of the guide pipe (2) is provided with a threaded pipe (22); a spring (32) is sleeved on the periphery of the threaded pipe (22);
the middle part of the fixing piece (3) is provided with a first through hole; a limiting step is arranged on the inner periphery of the first through hole of the fixing piece (3); one end of the spring (32) is propped against the limiting step, and the other end of the spring is propped against the lower end face of the guide pipe (2); the end surface of the bottom of the fixing piece (3) is provided with a positioning groove (33);
the first through hole through which the threaded pipe (22) passes is in threaded connection with the positioning piece (4); one end of the positioning piece (4) facing the fixing piece (3) is provided with a limiting bulge (41) which is inserted into the positioning groove (33) in a matching way;
a second through hole for the Kirschner wire to pass through is formed in the middle of the positioning piece (4);
the needle threading channel, the first through hole and the second through hole are correspondingly communicated;
the shape of the lower surface of the positioning piece (4) is arranged corresponding to the shape of the upper end surface of the femoral head, so that the positioning piece (4) is placed on the femoral head to form a positioning structure.
2. The guide for assisting the insertion of a kirschner wire in PFN surgery of claim 1, wherein the angle between the handle (1) and the catheter (2) has a value of 80-100 degrees.
3. The guide for assisting the insertion of a kirschner wire in PFN surgery of claim 1, wherein the positioning member (4) is manufactured by 3D printing technology.
4. The guide apparatus for assisting kirschner wire insertion in PFN operation according to claim 1, wherein the handle (1), the catheter (2) and the fixing member (3) are made of medical stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338647.0A CN111493997B (en) | 2020-04-26 | 2020-04-26 | Guide device for assisting kirschner wire placement in PFN operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338647.0A CN111493997B (en) | 2020-04-26 | 2020-04-26 | Guide device for assisting kirschner wire placement in PFN operation |
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| Publication Number | Publication Date |
|---|---|
| CN111493997A true CN111493997A (en) | 2020-08-07 |
| CN111493997B CN111493997B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010338647.0A Active CN111493997B (en) | 2020-04-26 | 2020-04-26 | Guide device for assisting kirschner wire placement in PFN operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113081224A (en) * | 2021-03-12 | 2021-07-09 | 宁波市第六医院 | Femoral intramedullary nail sighting device |
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| US20060015188A1 (en) * | 2004-07-17 | 2006-01-19 | Nexus Consulting Limited | Prosthesis and method of implantation |
| CN206587021U (en) * | 2016-11-25 | 2017-10-27 | 长春圣博玛生物材料有限公司 | A kind of minimally invasive guide plate for Caput femoris core decompression |
| KR101886952B1 (en) * | 2017-02-13 | 2018-08-08 | 한림대학교 산학협력단 | Scarf Osteotomy Apparatus |
| CN208659533U (en) * | 2017-12-22 | 2019-03-29 | 周驰 | A kind of minimally invasive impaction bone grafting locating guider of caput femoris necrosis |
| CN109662773A (en) * | 2018-11-21 | 2019-04-23 | 自贡市第四人民医院(自贡市急救中心) | A kind of combined type individuation sacroiliac screw navigation template and production method |
| CN208876729U (en) * | 2018-02-09 | 2019-05-21 | 陕西东望科技有限公司 | One kind being suitable for vertebral arch and takes root in percutaneous guide plate used in nail art |
| CN208926711U (en) * | 2018-03-30 | 2019-06-04 | 周驰 | A kind of two-way bone grafting guider of one channel |
| CN110495944A (en) * | 2019-09-20 | 2019-11-26 | 杨春 | A kind of femoral interlocking nail guid needle finder |
| CN110772309A (en) * | 2019-11-04 | 2020-02-11 | 自贡市第四人民医院(自贡市急救中心) | Screwing locking type sacroiliac joint screw imbedding auxiliary device |
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2020
- 2020-04-26 CN CN202010338647.0A patent/CN111493997B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060015188A1 (en) * | 2004-07-17 | 2006-01-19 | Nexus Consulting Limited | Prosthesis and method of implantation |
| CN206587021U (en) * | 2016-11-25 | 2017-10-27 | 长春圣博玛生物材料有限公司 | A kind of minimally invasive guide plate for Caput femoris core decompression |
| KR101886952B1 (en) * | 2017-02-13 | 2018-08-08 | 한림대학교 산학협력단 | Scarf Osteotomy Apparatus |
| CN208659533U (en) * | 2017-12-22 | 2019-03-29 | 周驰 | A kind of minimally invasive impaction bone grafting locating guider of caput femoris necrosis |
| CN208876729U (en) * | 2018-02-09 | 2019-05-21 | 陕西东望科技有限公司 | One kind being suitable for vertebral arch and takes root in percutaneous guide plate used in nail art |
| CN208926711U (en) * | 2018-03-30 | 2019-06-04 | 周驰 | A kind of two-way bone grafting guider of one channel |
| CN109662773A (en) * | 2018-11-21 | 2019-04-23 | 自贡市第四人民医院(自贡市急救中心) | A kind of combined type individuation sacroiliac screw navigation template and production method |
| CN110495944A (en) * | 2019-09-20 | 2019-11-26 | 杨春 | A kind of femoral interlocking nail guid needle finder |
| CN110772309A (en) * | 2019-11-04 | 2020-02-11 | 自贡市第四人民医院(自贡市急救中心) | Screwing locking type sacroiliac joint screw imbedding auxiliary device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113081224A (en) * | 2021-03-12 | 2021-07-09 | 宁波市第六医院 | Femoral intramedullary nail sighting device |
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| Publication number | Publication date |
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| CN111493997B (en) | 2023-06-13 |
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